Hangzhou Sealcon Fluid Machinery Co., Ltd

Pump(2024年04月24日)

chinasealcon — 2024-04-19T10:26:56+0900

https://www.china-sealcon.com/water-pump/

Water Pump Wholesale
Pumps are usually used to lift liquids, to transport liquids or to increase the pressure of liquids, that is, the mechanical energy of the original motive can be changed into liquid energy to achieve the purpose of pumping liquid.

The technical parameters of water pump performance are flow, suction, lift, shaft power, water power, efficiency, etc. According to different working principle, it can be divided into volume water pump, vane pump. The volumetric pump uses the change of its studio volume to transmit energy; Vane pump is used to transfer energy through the interaction of rotary blades and water, with the centrifugal pump, axial flow pump and mixed flow pump.

Precautions for installation of best water pump
1. The basic coordinates, elevation, dimensions and reserved holes shall meet the design requirements. The basic surface level and concrete strength shall meet the installation requirements of the equipment. The plane size of the water pump foundation shall be 100~150 mm wide at the base of the pump set when the vibration isolation is installed. The vibration isolation installation should be 150 mm wider than the water pump vibration isolation base. The top elevation of the foundation shall be higher than 100 mm above the surface of the pump room when installed without vibration isolation, and 50 mm above the surface of the pump room when the vibration isolation is installed, and no water will be formed. There are drainage facilities around the base, which can be used to drain water or prevent leakage.

2. The oil, gravel, soil and water in the hole of the water pump foundation surface and anchor bolt shall be cleaned up and predetermined. The thread and nut of the buried anchor bolt should be well protected, and the surface of the packet should be chipped.

Maintenance work of pump unit
put out the remaining water in the pump and pipeline.
if the dismantling is convenient, the pump and the pipeline can be removed and cleaned up.
check ball bearings, such as wear of inner, open movement, ball wear or surface spots, they should be replaced. The parts that can be used are cleaned with gasoline or kerosene after cleaning the bearings and preserved in butter.
check whether there are cracks or small holes in the impeller, whether the fixed nut of the impeller is loose, if it is damaged, it should be repaired or replaced. Check the clearance of the impeller at the grinding ring, if it exceeds the specified value, and should be repaired or replaced.
if both the water pump and the pipe are not disassembled, the cover will be sealed with the cover plate to prevent the entry of the sundries.
when the transmission belt is not used, the adhesive tape should be removed, cleaned and dried with warm water, kept in the place where there is no direct sunlight, and it should not be stored in oil-contaminated areas. No matter in any case, do not stick the tape on oil, diesel or gasoline, and do not apply rosin and other sticky material to the tape. Before using the tape, remove the white powder from the tape.
all the screws, bolts with wire should be brushed to clean, and coated with oil or immersed in diesel for storage.

As one of the reliable mechanical seal suppliers in China, Sealcon's products are sold globally and used in diverse industries.

Our aim is to be one of the top high pressure mechanical seal manufacturers.

Pump Wear Plate(2024年04月23日)

chinasealcon — 2024-04-19T10:26:15+0900

https://www.china-sealcon.com/pump-spare-parts/pump-wear-plate.html

Pump Wear Plate

For users, the maintenance of daily use is more important to prolong their life, so the following two points must be done:

tighten the wear-resistant plate (ring) of the nut regularly. After the use of a period of time, there is a little wear on the wear-resisting layer due to the existence of abrasive wear in the braided concrete cylinder, so that a small amount of wear is made on the wear-resistant layer, and the loosening of the locking nut will appear. The thrust ring is not compressed without producing elastic force. There will be a certain gap between the wear plate and the wear-resisting ring. At this time, the fine particles in the concrete will enter the wear plate and the wear-resisting ring, forming a low-stress abrasion wear.

As the speed of wear is accelerated, the gap between the wear plate and the wear-resistant ring will become larger, making the large particles of concrete into the room, quickening the wear and scratch of the wear-resistant layer, so that the life of the wear plate and the wear-resistant ring is greatly reduced. Therefore, it is necessary to adjust the lock nut regularly to ensure that there is a certain pressure between the wear-resisting ring and the wear plate, thereby improving the life of wear plate and wear-resisting ring.

Periodically check the thrust ring because the thrust ring is in the concrete for a long time, and it will be compressed for a long time, which will lose its elasticity due to fatigue and aging. This will result in the gap between the wear plate and the wear-resisting ring due to the lack of the pretension force. The various granular abrasives come into it, speeding up the wear between the wear-resistant layer and reducing the service life.

If you want to know more about agitator mechanical seal design, please visit our website.

With years' experience, Hangzhou Sealcon Fluid Machinery Co., Ltd has provided numerous solutions for different industries. Adopting advanced sealing technology, Sealcon's mechanical seals are sold worldwide and receive good comments.

Pump Spare Parts(2024年04月22日)

chinasealcon — 2024-04-19T10:24:42+0900

https://www.china-sealcon.com/pump-spare-part/

Pump body: including suction chamber and the pressure chamber.
Suction chamber: its function is to allow the liquid to flow evenly into the impeller.
Pressure chamber: its function is to collect liquid and send it to a lower impeller or guide discharge pipe. At the same time, reduce the velocity of the liquid, so that the kinetic energy becomes pressure energy. The pressure chamber has two forms: volute and guide wheel. The volute is named for the spiral shape of the runner. The liquid flows along the spiral line. With the increase of the flow section, the velocity decreases and the kinetic energy becomes pressure energy. The guide wheel is commonly used in the segmented multistage pump. In order to make the structure simple and compact, the guide wheel is used to transform the energy between the primary impeller and the secondary impeller, and the liquid flows along the flow path specified by the guide wheel to the inlet of the secondary impeller.
Impeller: it is the only element in the centrifugal pump to transfer energy to the liquid. The pump allows the mechanical energy to become the pressure of the liquid to increase the pressure of the liquid. The impeller is fixed on the shaft with the key, and the shaft is rotated by the original motive, passing the energy of the original motive to the liquid through the blade. According to the liquid flow impeller channel classification, it can be divided into single suction impeller (have an entry in the side of the impeller) and double suction impeller (liquid from symmetrically on both sides of the impeller flow in the impeller passage). According to the main flow direction of the liquid relative to the axis of rotation, the impeller can be divided into radial flow impeller, axial flow impeller and mixed flow impeller. According to the structure of impeller, it can be divided into the closed impeller, open impeller and semi-open impeller. The closed impeller consists of a number of blades and the wheel cover and wheel disk on both sides. The space between two adjacent blades and wheel cover and wheel disk is the flow path of the liquid. Open impeller only has the blade, without wheel cover and wheel; Half open impeller only is a wheel on one side of the blade.

Shaft: it is an important part of the transmission of mechanical energy. The torque of the original motive is transmitted to the impeller through it. The pump shaft is the main part of the pump rotor, the shaft is equipped with the impeller, axle sleeve, balance plate and other parts. The pump shaft is supported by both ends of the bearings, which is high-speed rotary in the pump. Therefore, the pump shaft should be capable of bearing capacity, abrasion resistance and corrosion resistance. The material of the pump shaft is usually made of carbon steel or alloy steel.

The Sealcon seal ring is a sealing device installed between the rotating impeller and the stationary pump case (a combination of middle and guide leaves). Its function is to increase the resistance of liquid flow between high and low-pressure cavity in the pump by controlling the gap between them and reduce leakage.

Shaft sleeve: the shaft sleeve is used to protect the pump shaft from corrosion and wear. If necessary, the axle sleeve can be replaced.

Shaft seal: the stuffing box between pump shaft and front and rear cover is referred to as shaft seal, mainly preventing liquid leakage and air entering the pump, so as to seal and prevent the pump from cavitation caused by air intake. There are three types of shaft seals: rubber seal with the skeleton, packing seal and mechanical seal.

As a pump spare parts manufacturer, we can provide kinds of water pump spare parts for sale, and the price of spare part water pump is reasonable, if you have needs, please contact us.

If you want to know more water pump spare parts list, please visit our website.

As a supplier seal, we will do our best to meet all the needs of customers.

Pump & Spare Parts(2024年04月22日)

chinasealcon — 2024-04-19T10:22:56+0900

https://www.china-sealcon.com/pump-and-pump-spare-parts/

Classification of booster pump spare parts
Generally, there are the impeller, bearing, sealing device, sealing material, main shaft, key, inducing wheel and other materials.

A pump is a machine that carries liquid or pressurizes the liquid. It transfers the mechanical energy of the original motive or other external energy to the liquid to increase the liquid energy. It is mainly used for conveying liquids including water, oil, acid lye, emulsion, suspension-emulsion and liquid metal, etc., it also can transport liquid, gas mixture and liquid containing suspended solids. The technical parameters of pump performance include flow, suction, lift, shaft power, water power, efficiency, etc. According to different working principles, it can be divided into volume water pump, vane pump type. The volumetric pump uses the change of its studio volume to transmit energy; Vane pump is used to transfer energy through the interaction of rotary blades and water, with the centrifugal pump, axial flow pump and mixed flow pump.

Classification of water pumps
1. According to the direction of the pump shaft, it can be divided into the horizontal pump, vertical pump and inclined pump.
2. According to the shell type, it can be divided into the radial split water pump and axial split water pump.
3. According to series, it can be divided into single-stage pumps and compound pumps.
4. In the form of suction, it can be divided into the single suction pump and double suction pump.
5. According to the water pump, it can be divided into the central supporting water pump, pipe type water pump, co-seat pump, split water pump and removable water pump.
6. According to the driving mode, it can be divided into direct connection, gear transmission, hydraulic coupling transmission, belt transmission and coaxial type.
7. According to special structure, it can be divided into liquid-type, cylindrical, double-wall shell type, ground pit drum type, extraction type, self-priming, submerged type and shielding type.
8. According to the axial force balance, it can be divided into balanced drum pump, balanced disc pump, self-balancing pump and balanced hole pump.
9. According to different purposes, it is mainly divided into boiler feed pump, circulating pump, sewage pump, impurity pump, sand pump, slurry pump, sewage pump, fresh water pump, fire pump, booster pump, corrosion resistant pump
10. According to the material, it can be divided into cast iron pump, stainless steel pump, plastic pump, fluorine plastic pump, engineering plastic pump.
11. According to the structure, it can be divided into the centrifugal pump, diaphragm pump, gear pump, plunger pump, reciprocating pump, vacuum pump and injection pump.

If you want to know more kinds of china pump parts, please visit our website.

Different materials including carbon, ceramic, silicon carbide, tungsten carbide etc. are available in Hangzhou Sealcon Fluid Machinery Co., Ltd, so as to be widely applied in different industries, such as oil and gas, chemical, pulp and paper, etc.

We can also offer kinds of china rubber seal for sale, if you are interested, please contact us.

Multistage Centrifugal pumps(2024年04月21日)

chinasealcon — 2024-04-19T10:21:49+0900

https://www.china-sealcon.com/pump/multistage-centrifugal-pumps.html

A multistage centrifugal pump assembly is a collection of two or more centrifugal pumps that have the same functions. In the fluid channel structure, the performance in the first level of medium pressure mouth and second-level imports are interlinked, the second level of medium pressure and the third level of imports are interlinked, so formed a multistage centrifugal pump series of institutions. The significance of multi-stage centrifugal pump is to improve the setting pressure.

The structure of a multi-stage centrifugal pump
The multi-stage centrifugal pump is mounted on the same pump shaft with several impeller, and the outer part of the impeller is the liquid diversion device and the pump shell. According to the assembly method, there are two kinds: the horizontal split-type multi-stage centrifugal pump, which divides the pump body and the guide device along the axis of the pump shaft, making it into the upper and lower parts. The sectional multi-stage centrifugal pump cuts the pump body and the liquid diversion device along the pump shaft between the impeller to cut into several segments perpendicular to the pump shaft.

Characteristics of Sealcon multistage centrifugal pump
It covers an area of small area. The center of gravity of the pump coincides with the center of the pump foot, so it runs smoothly, it has small vibration and long life.
The multi-stage centrifugal pump has the same caliber and the same level centerline does not need to change the pipeline structure, it can be directly installed in any part of the pipeline, so the installation is very convenient.
The electric motor and the rainproof cover can be directly used outdoors, without the need to build the pump room, which greatly saves the infrastructure investment.
The multistage centrifugal pump lift can meet the different requirements by changing the pump series (the number of impellers), so the application range is wide.
The shaft seal is mechanical seal with hard alloy, the seal is reliable, no leakage and the mechanical loss is small.
High efficiency and energy saving, beautiful appearance.
The casting of the inner part of the above 50 calibers is formed.

As one of multistage centrifugal pump suppliers, we can provide kinds of multistage centrifugal pump parts for sale, anything you need, please contact us.

There are many cartridge seal suppliers in China, but we are one of the best choices for you.

Magnetic Pumps(2024年04月20日)

chinasealcon — 2024-04-19T10:19:37+0900

https://www.china-sealcon.com/pump/magnetic-pumps.html

The magnetic pump china is a branch of the pump, and is a new product that applies the working principle of the permanent magnet coupling shaft to the centrifugal pump. In the production process of petroleum, chemical industry, pharmaceutical, printing and dyeing, electroplating, food, environmental protection, etc., it is used to transport corrosive liquid with no iron scrap.

The composition of magnetic pump
Magnetic pump mainly consists of pump head, magnetic actuator (magnetic cylinder), motor, base and other parts. The magnetic actuator consists of an outer magnetic rotor, an internal magnetic rotor and a non-conductive isolation sleeve.

Working principle of magnetic pump
When the motor drives the external magnetic rotor to rotate, the magnetic field can penetrate the air gap and non-magnetic material, and drive the inner magnetic rotor connected with the impeller to rotate synchronously, realize the non-contact transmission of power and transform the dynamic seal into a static seal. As the pump shaft and the internal magnetic rotor are completely closed by the pump body and the isolation sleeve, the problem of "running, dropping and leaking" is completely solved. It eliminates the hidden danger of flammable, explosive, toxic and harmful medium in oil refining and chemical industry through the leakage of pump seal.

Advantages of magnetic pump
The pump shaft is a closed static seal, which completely avoids the leakage of the medium. It can be amphibious and completely waterproof.
There is no need for independent lubrication and cooling water to reduce energy consumption.
It's effective and the effect of the vibration of the motor on the pump and the influence of the vibration of the pump on the motor is reduced.
The rotor will be skidded on the ceramic shaft during overloading, which can protect the motor and pump.

Hangzhou Sealcon Fluid Machinery Co., Ltd adopts the latest technology to produce sealing products, seal spare parts and pump and pump spare parts with long service life.

We can also offer kinds of high quality mechanical seal for sale, if you have needs, please contact us.

Chemical Centrifugal Pumps(2024年04月19日)

chinasealcon — 2024-04-19T10:17:59+0900

https://www.china-sealcon.com/pump/chemical-centrifugal-pumps.html

Chemical centrifugal pump is widely used in various fields of chemical industry. Compared with other kinds of pumps, it has the advantages of simple structure, easy to wear, smooth operation, small noise, uniform water discharge, convenient adjustment and high efficiency. It is used sewage discharge in industrial, commercial, medical, environmental protection and other fields.

Classification of chemical centrifugal pump
The impeller of the chemical centrifugal pump can be divided into the closed impeller, semi-closed impeller, open impeller and semi-open impeller. The flow direction can be divided into the radial flow, axial flow and mixed flow according to shape and liquid flow.

The working principle of the chemical centrifugal pump
Before the start of the chemical centrifugal pump, the pumped liquid is filled in the pump shell. After start-up, the impeller is driven by the shaft and the liquid between the blades turns. Under the action of centrifugal force, the liquid is ejected from the outer edge of the impeller and into the volute pump shell. And because of the internal and external pressure difference, the liquid can flow from the suction tank to the impeller continuously.

Matters needing attention
The access to the water pipe must be kept in a sealed state.

Check the running status of the centrifugal pump regularly, and if the abnormal situation is found, it should be stopped in time.

Do not appear the state of the turbidity of the chemical centrifugal pump, but the centrifugal pump is still running for a long time.

Do not appear when the normal flow of the chemical centrifugal pump is running, the motor of the centrifugal pump is still running in the state of the supercurrent for a long time.

The Sealcon chemical centrifugal pump cannot be operated in a state of no person, and special personal should be supervised.
As one of top mechanical seal manufacturers, we can provide kinds of related products for sale, if you have needs, please contact us.

DOUBLE CARTRIDGE MECHANICAL SEALS(2023年06月08日)

chinasealcon — 2023-05-31T17:53:24+0900

https://www.china-sealcon.com/mechanical-seals/double-cartridge-mechanical-seals/

Double Cartridge Mechanical Seal for Sale
Cartridge mechanical seal is the rotary ring, stationary ring, spring, auxiliary seal, bushings, glands, Gasket and static seal, total 7 components together into a collection. Therefore, the installation of the machine is more convenient, faster, reliable, welcomed by users all over the world.

Double Cartridge Seals D11
Replacement for:
John Crane SE2 safematic

Double Cartridge Seals D11
Replacement for:
John Crane SE2 safematic
Features：
Pulp and paper plant
Sulzer APP pumps

Double Cartridge Seals D13
Replacement for:
John crane SL Agitators

Double Cartridge Seals D13
Replacement for:
John crane SL Agitators
Features:
Pulp and paper plant
Sulzer APP pumps

Double Cartridge Seals D14
Replacement for:
John crane SAF

Double Cartridge Seals D14
Replacement for:
John crane SAF
Features:
Pulp and paper plant
Sulzer Screen

Double Cartridge Seals D21
Replacement for:
BURGMAN CARTEX DN

Double Cartridge Seals D21
Replacement for:
BURGMAN CARTEX DN
Features:
DIN standard
ANSI bore

Double Cartridge Seals D51
Replacement for:
Depac 321

Double Cartridge Seals D51
Replacement for:
Depac 321
Features:
DIN standard
Easy installation

Double Cartridge Seals D53
Replacement for:
Depac 365

Double Cartridge Seals D53
Replacement for:
Depac 365
Features:
DIN standard
Easy installation
Materials Combination of Double Cartridge Seals
Face: Carbon, SiC, TC
Seat: SiC, TC
O-rings: NBR, EPDM, VITON, Aflas, FEP, Kalrez, Chemraz
Spring: SS316, Hastelloy C, AM350
Metal parts: SS316, Hastelloy C

Feature of Double Cartridge Seals
Installation without measuring the length of the seal work;
Axis can be adjusted at any time;
No start-up leakage problem occurs because the seals have been tested beforehand;
Only need to install the package tightly sealed bolts, easy to ensure the quality of assembly;
protect the sealing surface from contamination or damage due to operational errors before installation or start to operate;
Can be re-adjusted after the thermal expansion of machinery and equipment;
Use of coordination, it can self - determine center.
Easy to remove the seal for cleaning and inspection, without having to disassemble pump equipment.
Double Mechanical Seal Installation
Double cartridge seal is made up of 2 set seal faces.

Double mechanical seal for reactor and double mechanical seal for agitator have axial double-face seals and radial double-face seals. The radial double cartridge shaft seal's structure is more compact than the axial double cartridge seal. Double seal pump is widely used in the media which is poor Lubricated, toxic, flammable, explosive, volatile, containing abrasive and gas etc.

The pre-installation of the dual cartridge mechanical seal is simple and easy to operate. It simplifies the process of measurement and adjustment, and has the characteristics of simple installation and strong interchangeability. The damage to the sealing element caused by the mechanical seal installation is avoided and the maintenance cost is reduced. With high quality imported special ceramics, corrosion resistant graphite, sintered carbide and other sealing materials, the life of the mechanical seal is improved.

Advantage of Double Cartridge Seals
Cartridge design, easy to install and reliable, no one for the installation error; Balanced seal ring design, can withstand higher pressure fluctuations of the medium; (3) stationary ring automatic compensation mechanism. Can overcome the influence of the angular offset of the end face and compensate the non-perpendicularity of the end face and the shaft; Modular design, easy interchangeability of spare parts, easy installation; Built-in small spring does not contact with the medium, so it will not be clogged or corroded;The small spring is not affected by the centrifugal force and is suitable for higher speed. Complete seal ring design, suitable for the high-temperature environment; Withstand the isolation fluid and medium pressure fluctuations during operation, Suitable for high speed.

Application of Double Cartridge Seals
Cartridge mechanical seals are widely used in all sectors of enterprises. Such as water pump plant, printing and dyeing machinery plant, paper mill, power plant, chemical plant, pharmaceutical shipyard and sewage treatment plant, and are widely used in hospitals, agriculture, equipment cooling, leather making industry, heavy machinery and so on.

It can be used for various types of Pump, valves, mixer, Reaction synthesis reactor, turbine compressor, submersible motor etc

Difference between Single Cartridge Seals and Double Cartridge Seals
Single cartridge seal is made up of 1 set of seal faces while double cartridge seal is made up of 2 set seal faces.The principle of the double cartridge high pressure mechanical seal is basically the same as Single cartridge mechanical seal. Both of them are constituted by the seal face (friction pair) perpendicular to the rotation axis, worked as Fluid leakage device based on the function of the fluid pressure and the compensation mechanism and the auxiliary seal. Double cartridge shaft seal has two face seals, if the primary seal fails, the secondary seal can still be sealed to prevent leakage.The use of dual mechanical seal allows the cleaning fluid to be held between groups of surfaces. This allows the sealing surface can only see a clean lubricating fluid, greatly extending the life of the seal. General dual mechanical seals are required for sealing liquid system. Sealing fluid is introduced into the sealed chamber for blocking, lubrication and cooling, and is mostly used for circulating cooling. Sealing fluid can not only wash the friction pair to improve the working environment of the mechanical seal, but also as an important sealing surface failure is an important means of detection.

Hangzhou Sealcon Fluid Machinery Co., Ltd adopts the latest technology to produce sealing products, seal spare parts and pump and pump spare parts with long service life. We supply a wide range of products made of different materials, including rubber, stainless steel, PTFE, carbon, ceramic, Sic, TC, etc. Also, our sealing spare parts are easy to interchange and maintain.

TC Seal(2023年06月07日)

chinasealcon — 2023-05-31T17:52:37+0900

https://www.china-sealcon.com/mechanical-sealing-material/tc-seal.html

TC materials have features of high hardness, strength, abrasion resistance and corrosion resistance. It is known as “Industrial Tooth”. Due to its superior performance, it has been widely used in military industry, aerospace, mechanical processing, metallurgy, oil drilling, electronic communication, architecture and other fields. For example, in pumps, compressors and agitators,TC sealsare used asmechanical seals. Good abrasion resistance and high hardness make it suitable for the manufacture of wear-resistant parts with high temperature, friction and corrosion.

Categories of TC Seal Material
According to its chemical composition and usage characteristics, TC can be divided into four categories: tungsten cobalt (YG), tungsten-titanium (YT), tungsten titanium tantalum (YW), and titanium carbide (YN).

Tungsten cobalt (YG) hard alloy is composed of WC and Co. It is suitable for processing brittle materials such as cast iron, nonferrous metals and non-metallic materials.

Stellite (YT) is composed of WC, TiC and Co. Due to the addition of TiC to the alloy, its wear resistance is improved, but the bending strength, grinding performance and thermal conductivity have decreased. Because of its brittleness under low temperature , it is only suitable for high-speed cutting general materials and not for the processing of brittle materials.

Tungsten titanium tantalum (niobium) cobalt (YW) is added to the alloy to increase the high temperature hardness, strength and abrasion resistance through appropriate amount of tantalum carbide or niobium carbide. At the same time, the toughness also is improved with better comprehensive cutting performance. It is mainly used for hard cutting materials and intermittent cutting.

The carbonized titanium base class (YN) is a hard alloy with the hard phase of TiC, nickel and molybdenum. Its advantages are high hardness, anti - bonding ability, anti - crescent wear and anti - oxidation ability. At a temperature of more than 1000 degrees, it can still be machined. It is applicable to the continuous-finishing of alloy steel and quenching steel.

Material Property of TC Seal
Sealcon mainly selects the materials of YN and YG series to provide customers with high quality TC Seal service.

modelnickel content（wt%）density(g/cm²)hardness(HRA)bending strength(≥N/mm²)
YN65.7-6.214.5-14.988.5-91.01800
YN87.7-8.214.4-14.887.5-90.02000

modelcobalt content（wt%）density(g/cm²)hardness(HRA)bending strength(≥N/mm²)
YG65.8-6.214.6-15.089.5-91.01800
YG87.8-8.214.5-14.988.0-90.51980
YG1211.7-12.213.9-14.587.5-89.52400
YG1514.6-15.213.9-14.287.5-89.02480
YG2019.6-20.213.4-13.785.5-88.02650
YG2524.5-25.212.9-13.284.5-87.52850

More kinds of hydrocarbon pump mechanical seal, please visit our website.

Stainless Steel Seal(2023年06月06日)

chinasealcon — 2023-05-31T17:51:51+0900

https://www.china-sealcon.com/mechanical-sealing-material/stainless-steel-seal.html

Stainless Steel is short for stainless acid resistant steel. It is called Stainless Steel with weak corrosive medium or Stainless Steel, such as air, steam and water. The type of steel that corrodes the chemical corrosive medium (acid, alkali, salt, etc.) is called acid-resisting steel.

Classification of Steel Seal Material
According to the organization status, it can be divided into martensitic steel, ferritic steel, austenitic steel, austenite - ferrite (double phase) stainless steel and precipitation hardening stainless steel. In addition, it can be divided into chromium stainless steel, chromium nickel stainless steel and chromium manganese nitrogen stainless steel according to its constituent.
The word "stainless steel" is not merely refers to a pure stainless steel but more than one hundred kinds of stainless steel industry. And the development of each stainless steel has good performance in their specific applications. Therefore, the first stept is to figure out the useage, and then determine the correct type of steel according to the characteristics of each type of stainless steel.

Characteristics of Sealcon China Stainless Steel Seal
Due to its excellent corrosion resistance, compatibility and strong ductility in wide temperature range, stainless steel is also an excellent raw material for steel seal suppliers.
Sealcon’s steel seal for sale mainly applies following raw materials:
2Cr13
AISI 304
AISI 316
AISI 316L
AM350 alloy
Hastelloy C alloy
Titanium alloy
Copper
Bronze

As a reliable supplier of sealing products, Hangzhou Sealcon Fluid Machinery Co., Ltd provides the best solution for your equipment sealing problem.

SiC Mechanical Seal(2023年06月05日)

chinasealcon — 2023-05-31T17:50:50+0900

https://www.china-sealcon.com/mechanical-sealing-material/sic-mechanical-seal.html

Sealcon silicon carbide products are classified into many kinds according to different application environment. It is generally used more mechanically. For example, silicon carbide is an ideal material for silicon carbide mechanical seal because of its good chemical corrosion resistance, high strength, high hardness, good wear resistance, small friction coefficient and high temperature resistance.

SiC Seal Material
Silicon carbide (SiC) is also known as carborundum, which is made of quartz sand, petroleum coke (or coal coke), wood chips (which need to be added when producing green silicon carbide) and so on. Silicon carbide also has a rare mineral in nature, mulberry. In contemporary C, N, B and other non-oxide high technology refractory raw materials, silicon carbide is one of the most widely used and economical materials, which can be called gold steel sand or refractory sand. At present, China's industrial production of silicon carbide is divided into black silicon carbide and green silicon carbide, both of which are hexagonal crystals with a proportion of 3.20 ~ 3.25 and microhardness of 2840 ~ 3320kg/mm2.

Types of Silicon Carbide Seal Rings
Silicon carbide seal rings can be divided into static ring, moving ring, flat ring and so on. SiC silicon cab be made into various carbide products, such as silicon carbide, silicon carbide, silicon carbide ring and so on, according to the special requirements of customers. It can also be used in combination with graphite material, and its friction coefficient is smaller than alumina ceramic and hard alloy, so it can be used in high PV value, especially in the condition of strong acid and strong alkali.

Silicon Carbide Pump Seals Material Property
The following tables introduce R-SiC and S-SiC.
propertiesR-SiCS-SiC
Porosity (%)≤0.3≤0.2
Density (g/cm3)3.053.1~3.15
Hardness110~125 (HS)2800 (kg/mm2)
Elastic Modulus (Gpa)≥400≥410
SiC Content (%)≥85%≥99%
Si Content (%)≤15%0.10%
Bend Strength (Mpa)≥350450
Compressive Strength (kg/mm2)≥22003900
Coefficient of heat expansion (1/℃)4.5×10-64.3×10-6
Heat resistance (in the atmosphere) (℃)13001600

Test EnvironmentCorrosive Weight Loss (mg/cm2yr)
Concentration Reagent (wt%)TemperatureR-SICS-SIC
(℃)
98%H2S04100501.5
50% NaOH10010002.5
53% HF10070.2
85% H3P0410080.2
70% HNO31000.50.2
45% KOH10010000.2
25% HCL1000.90.2
10% HF plus2510000.2
As a china pump supplier, we will do our best to meet all the needs of customers.

Rubber Seal(2023年06月04日)

chinasealcon — 2023-05-31T17:49:53+0900

https://www.china-sealcon.com/mechanical-sealing-material/rubber-seal.html

Rubber seal is one of the common base components in sealing device, and plays an important role in the leaking and sealing. It is composed of one or a few parts of the annular cover, fixed to the bearing ring or washer and contact with another ring or washer or form a labyrinth of narrow gap and prevent the lubricating oil leakage and outside intrusion.

How Rubber Work in Mechanical Seals
Rubber seals have a variety of contours, including O-rings, cup gaskets, bellows diaphragms, sealing/wiper lip, etc. The rubber shaft seals are classified into static or dynamic categories. They would generate positive pressure on the surface to eliminate or control the leakage of liquid and/or gas while preventing the ingress of external contaminants such as dust and dirt.

Benefits of Rubber Seal Material
Because rubber has precious elastic polymer material and the wide temperature range. A little stress in different medium can produce large deformation. Then the deformation can provide contact pressure and leakage clearance compensation to achieve the purpose of sealing. Rubber seal suppliers devote to providing all kinds of rubber seals which are applied to mechanical equipments, in the specified temperature, pressure and different liquids and gases, to achive the sealing effect in the static or moving state.

Select the Right Rubber Seal Material
China rubber ring can be divided into fluorine rubber seal ring, silicone rubber seal ring, nitrile rubber seal ring and so on. These different rubber seal materials have different product characteristics and are suitable for different fields. For example, fluorine rubber with high temperature resistance can be used in - 30℃ to + 250℃ environment with strong oxidant, oil resistant and alkali resistance. Due to its excellent performance, fluorine rubber is widely used in petroleum, chemical, aviation, aerospace and other sectors. The following table can help you master the characteristics of different rubber seals, and then choose different rubber seal rings according to different needs.

NBRHNBREPDMCRVITONAFLASFFKMPTFEVMQ
ozone resistant△●●●●●●●●
○
heat resistant120150150120200175320280220
chemical resistant○○●○●●●●●
△△○
oil resistant●●×○●●●●○
△○△
cold resistant-40℃-40℃-50℃-40℃-20℃-30℃-20℃-10℃0℃-70℃
wear resistant○●○○●●●●×
○○○
distortion resistant●○●△○○●×●
○○
acid resistant△○●○●●●●△
○△
alkali resistant○●●●●●●●△
○○○
tensile strength●●●●●●○△×
○○○○○△×
vapor resistant×○●△○●●○○
△○△△
burnresistant×××○●○●●△
×
stable stock year4396143961439614396115-2015-2015-2015-2015-20
common color: red orange yellow green blue gray purple brown

As one of rubber seal suppliers, we have our own rubber seal factory, if you have needs, please contact us.

We can also offer kinds of china agitator for sale, if you are interested, please leave us a message.

Hangzhou Sealcon Fluid Machinery Co., Ltd focuses on the quality of the product and supplies excellent service to customers.

PTFE Seal(2023年06月03日)

chinasealcon — 2023-05-31T17:49:13+0900

https://www.china-sealcon.com/mechanical-sealing-material/ptfe-seal.html

Polytetrafluoroethylene (PTFE), also known as teflon/teflon or plastic king, is a copolymer of tetrafluoroethylene monomer. First, it was developed for national defense and cutting-edge technology and development but later it has gradually extended to civil use, which is generally applied to corrosion-resistant pipes, containers, pumps, high frequency communication equipment and wireless electrical equipment with high performance requirements.

PTFE seal has become the common seal material for its unique properties.

Performance of PTFE Seal
Stability: almost all chemical resistance, strong acid, strong alkali or strong oxidizer and organic solvents have no effect on it.
Thermal stability: pyrolysis temperature above 400 ℃, therefore, it can work within the scope o - 200 ℃ ~ + 350 ℃.
Wear resistance: the friction coefficient of PTFE material is extremely low, only 0.02, which is 1/40 of rubber.
Self-lubricating: the surface of the PTFE material has a prominent self-lubricating property, and almost all of the viscous material cannot adhere to its surface.

Selection of PTFE Seal Material
However, the pure PTFE has the low strength and the abrasion performance is not very perfect. Usually some inorganic particles are put into the polymer PTFE, such as graphite, molybdenum disulfide, molybdenum disulfide, aluminium oxide, glass fiber, carbon fiber and so on to improve its mechanical properties. It also can be used with other polymers, such as polystyrene resin (PHB), polyphenylene sulfide (PPS), polyether ether ketone (PEEK), poly (perfluorinated (ethylene/propylene copolymer (PFEP) blending method to extend its damping temperature range and improve the creep resistance. Therefore, different PTFE materialas produce all knids of PTFE mechanical seals.

propertiesunitpure PTFEglass fibire filled PTFEcarbon filled PTFE
densityg/cm32.22.32.08
tensile strengthMPa301513
max. working temperature℃260260260

If you want to know more kinds of mechanical seal cover, please contact us.

With years' experience, China Sealcon Seals has provided numerous solutions for different industries. Adopting advanced sealing technology, Sealcon's mechanical seals are sold worldwide and receive good comments.

Ceramic Seal(2023年06月02日)

chinasealcon — 2023-05-31T17:48:27+0900

https://www.china-sealcon.com/mechanical-sealing-material/ceramic-mechanical-seal.html

Ceramic material refers to inorganic non-metallic materials made of natural or synthetic compounds through forming and sintering. It has the advantages of high melting point, high hardness, high wear resistance and oxidation resistance. Ceramic mechanical seal is widely used in machinery, chemical industry, petroleum, pharmaceutical, automobile and other fields. Because of its advantages, ceramic shaft seal has become Sealcon’s great choice for sealing materials.

Ceramic Material Properties
High pressure mechanical seals has the high demands about sealing materials, so the ceramic is choosed to make ceramic mechanical seal because of its competitive features.

Mechanical characteristic
Ceramic material is the material with the best rigidity and highest hardness in engineering materials, and its hardness is mostly above 1500HV. Ceramics have high compressive strength, but low tensile strength, poor plasticity and toughness. Ceramic seals perfectly inherit these characteristics.

Thermal characteristic
Ceramic materials generally have high melting point (mostly above 2000), and have excellent chemical stability at high temperature. The thermal conductivity of ceramics is lower than that of metal materials. At the same time, the linear expansion coefficient of ceramics is lower than that of metal. When temperature changes, ceramics have good dimensional stability.

Electrical characteristic
Most ceramics have good electrical insulation, so a large amount of insulation is used to make all kinds of voltages (1kV~110kV). Ferroelectric ceramics barium titanate (BaTiO3) has high dielectric constant which can be used in the production of capacitor, ferroelectric ceramics. A few ceramics also have the characteristic of semiconductor, can be a rectifier.

Chemical characteristic
Ceramic material is not easy to be oxidized at high temperature, and has good corrosion resistance to acid, alkali and salt.

Optical characteristic
Ceramic materials also have unique optical properties, which can be used as solid laser materials, optical fiber materials, optical storage containers, etc. Transparent ceramics can be used in high-pressure sodium lamp tubes. Magnetic ceramics (ferrites such as MgFe2O4, CuFe2O4, Fe3O4) have a wide range of applications in recording tapes, records, transformer cores, and large computer memory components.
Ceramic Material Properties
Mechanical seals has the high demands about sealing materials, so the ceramic is choosed to make ceramic mechanical seal because of its competitive features.

Chemical characteristic
Ceramic material is not easy to be oxidized at high temperature, and has good corrosion resistance to acid, alkali and salt.

Physical Property of Ceramic Seal Ring
ceramic physical property
technical parameterunit95%Al2O399%Al2O399.5%Al2O3
content of Al2O3%959999.5
densityg/cm33.73.883.9
hardnessHRA858890
porosity rate%0.40.20.15
fractural strengthMPa250310350
coefficient of heat expansion10(-6)/K5.55.35.2
thermal conductivityW/M.K27.826.726

If you want to know more kinds of ceramic seals for water pumps, please visit our website.

Hangzhou Sealcon Fluid Machinery CO., Ltd was established in 2011, with Sealcon trademark we specialized in mechanical seal design, manufacturing, maintenance and sales, as well as the pump valve spare parts procurement and sales.

Carbon Seal(2023年06月01日)

chinasealcon — 2023-05-31T17:47:34+0900

https://www.china-sealcon.com/mechanical-sealing-material/carbon-seal.html

Carbon mechanical seal has a long history. Graphite is an isoform of element carbon. In 1971, the United States studied the successful flexible graphite sealing material, which solved the leakage of atomic energy valve. After deep processing, the flexible graphite becomes an excellent sealing material, which are made into various carbon mechanical seals with the effect of sealing components. These carbon mechanical seals are used in chemical, petroleum, electric power industries such as high temperature fluid seal.

Because the flexible graphite is formed by the expansion of expanded graphite after high temperature, the amount of intercalating agent remaining in the flexible graphite is very small, but not completely, so the existence and composition of the intercalation agent have a great influence on the quality and performance of the product.

Selection of Carbon Seal Material
The original inventor used concentrated sulfuric acid as oxidant and intercalating agent. However, after being applied to the seal of a metal component, a small amount of sulfur remaining in the flexible graphite was found to corrode the contact metal after long term use. In view of this point, some domestic scholars have tried to improve it, such as Song Kemin who choosed acetic acid and organic acid instead of sulfuric acid. acid, slow in nitric acid, and lower the temperature to room temperature, made from a mixture of nitric acid and acetic acid. By using the mixture of nitric acid and acetic acid as the inserting agent, the sulfur free expanded graphite was prepared with potassium permanganate as oxidant, and acetic acid was slowly added to nitric acid. The temperature is reduced to room temperature, and the mixture of nitric acid and acetic acid is made. Then the natural flake graphite and potassium permanganate are added to this mixture. Under constant stirring, the temperature is 30 C. After reaction 40min, the water is washed to neutral and dried at 50~60 C, and the expanded graphite is made after high temperature expansion. This method achieves no vulcanization under the condition that the product can reach a certain volume of expansion, so as to achieve a relatively stable nature of the sealing material.

Specification of Carbon Ring Seal
Sealcon can produce different carbon shaft seals according to different customers’ requirement.

modelM190TM106KM180KM106DM160CM160B
materialpure graphitefuran resinfuran resinantimony carboncopper alloyBabbitt alloy
density (g/cm3)1.81.651.82.32.42.4
Fractural strength1006580658065
(MPa)
compressive strength (MPa)250230240200250160
Shaw hardness929090807560
porosity (%)1.21.51.222.58
Coefficient of heat5.55.55.55.565.5
expansion (1/℃)
temperature (℃)600210210350350200

mediumconcentration%pure graphitefuran resinantimonycopper alloyBabbitt alloy
hydrochloric acid36+0---
sulfuric acid50+0---
sulfuric acid98++---
nitric acid50+0---
nitric acidstrong----
hydrofluoric acid40+0---
phosphoric acid85++---
chromic acid10+0---
acetic acid36+0---
sodium hydroxide50++--+
potassium hydroxide50+0--+
sea water+++++
benzene100+0++-
ammonia10++++-
acetone100+++0+
carbamide+++0-
carbon tetrachloride+++++
oil+++++
gasoline+++++

As a carbon seal ring manufacturer, we will do our best to meet all the needs of customers.

More kinds of hydrocarbon pump mechanical seal, please visit our website.

Application of Main Shaft Seal in Water Turbine(2023年01月28日)

chinasealcon — 2023-01-28T12:33:38+0900

https://www.china-sealcon.com/application-of-main-shaft-seal-in-water-turbine.html

In recent years, our country's economy continues to develop steadily, and at the same time, the demand for power supply is increasing continuously, and now the main channel of power production is the hydropower plant, so the hydropower plant is now closely connected with the people's life. Water turbine is an important part of hydropower plants. And as for water turbine, the main shaft seal is its indispensable component. But the main hydro turbine shaft seal is easy to fail, and its safety cannot be guaranteed, so it is a problem to be solved urgently in the current domestic hydropower industry. At present, the water turbines usually operate in high pressure and high-speed environment, which causes great pressure on the pump seals. The pump sealing parts of the turbine are easily worn by the sediment in the water, and the leakage often occurs, which makes the working efficiency of the water turbine decline rapidly and its reliability is also reduced, so regular sealing part replacement is needed. In view of this situation, the main shaft seal of the water turbine is invented, and it replaces the traditional sealing components of the water turbine, it can make the water turbine operate properly and improve the working efficiency and working quality of the water turbine.

Water turbine is a kind of energy conversion machine. It transforms the water energy into the mechanical energy of the rotating wheel by a certain way. After the mechanical energy is generated, the generator is driven by the rotation of the wheel to generate electric energy. The power of the water turbine comes from the water. Because of the characteristics of our country and the rivers, the sediment in the river is pretty much, especially in the rainy season, and a large amount of sediment will bring damage to the traditional sealing. Many sealing methods will have serious wear and tear after a period of time, thus affecting the seals’ normal use and the devices will begin to leak.

At present, there are two main classifications of water turbine main shaft china rubber seal:
(1) according to the nature of work, it can be divided into maintenance seal and working seal. There are many categories in the working seal, according to the seal structure, working seal can be divided into flat seal, disk seal, end seal, etc.;

(2) according to the structural division of water turbine main shaft seal, it can be divided into contact seal and non-contact seal. The non-contact seal includes reverse spiral seal and centrifugal seal.

China Sealcon adopts the latest technology to produce sealing products, seal spare parts and pump and pump spare parts with long service life.

The Processing of Teflon Bellows(2023年01月28日)

chinasealcon — 2023-01-28T12:32:48+0900

https://www.china-sealcon.com/the-processing-of-teflon-bellows.html

Bellows is a corrugated tube shaped elastic part which can be used in the component of the mechanical seal compensation ring, which can be expanded under the external force or self elastic force and compensates the auxiliary seal of the ring. The bellows type agitator mechanical seal design has no relative sliding on the shaft, no abrasion on the shaft, and good follow-up, and is widely applied to the pump products, like water pump seals . HTB series anti-corrosion engineering plastic pumps are widely used in petrochemical, mining, chemical and pharmaceutical industries, and are used to transport toxic and harmful chemical media including acid, alkali, pulp and sewage. Therefore, it has special requirements for its anti-corrosion, high wear resistance and anti-leakage. The mechanical seal of this series of pumps is made of polytetrafluoroethylene bellows. Teflon bellows require high precision, low elastic modulus of material, easy deformation of corrugated structure and difficult turning. In view of the material and structural characteristics of bellows, a practical and reliable technology and manufacturing method for corrugated pipe turning is put forward.

Corrugated pipe is made of three sections of solid Teflon, Teflon filled with glass fiber and Teflon filled with carbon fiber. Bellows have different properties and uses for different materials: 1) Teflon containing carbon fiber has the properties of high tensile strength, corrosion resistance and wear resistance; 2) Pure PTFE has a density of 2.29 g/cm' and a water absorption rate of less than 0.01%. It has the characteristics of corrosion resistance, aging resistance, high temperature resistance, good mechanical toughness and elasticity, so that the seal has compression and resilience and permanent deformation is small; 3) The Teflon containing glass fiber is resistant to aging and corrosion, and the dimensional stability is good, so that the sealing parts can achieve ideal matching status in assembly.

Analysis And Maintenance Scheme Of Leakage Point Of Mechanical Seal For Pump(2023年01月28日)

chinasealcon — 2023-01-28T12:31:05+0900

https://www.china-sealcon.com/sealcon-service/analysis-and-maintenance-scheme-of-leakage-point-of-mechanical-seal-for-pump.html

Pump with a wide range of mechanical seals, different models, but there are five major leaks:
Seal between sleeve and shaft;
Seal between movable ring and shaft sleeve;
Dynamic and static ring seal;
The seal between the static ring and the static ring seat;
Seal between the end cap and the pump body.
In general, the shaft between the shaft, the seal between the end of the cover and the leakage between the pump is easier to find and solve, but the need for careful observation, especially when the working medium for liquefied gas or high pressure, toxic and harmful gases, the relative difficulties some. The rest of the leak is intuitively difficult to distinguish and judge, to be in the long-term management, maintenance practice on the basis of the symptoms of leakage observation, analysis, judgment, in order to draw the correct conclusion.

Analysis and judgment of leakage
Installation of mechanical seal static test leak. Mechanical seal installation and commissioning, the general to conduct a static test, observe the leakage. Such as the leakage of small, mostly dynamic ring or static ring ring there is a problem; leakage is large, then the dynamic and static ring friction between the existence of problems. In the initial observation of leakage, to determine the basis of the leak, and then manually observe the car, if there is no significant changes in the leakage of static and dynamic ring seal problems; such as the amount of leakage when the car can be determined to be significant changes, Static ring friction side of the problem; such as leakage media along the axial injection, the dynamic ring there are many problems, the leakage medium to the surrounding jet or leak from the water cooling hole, then the static ring failure. In addition, the leakage channel can also exist, but generally there are prim

Test run when the leak. Pump mechanical seal After a static test, the high-speed rotation of the centrifugal force generated during operation, will inhibit the media leakage. Therefore, the test machine mechanical seal leakage in the exclusion of the shaft and the end cap seal failure, basically due to the dynamic and static ring friction caused by damage. The factors that cause the failure of the friction seal are:
Operation, due to evacuation, cavitation, pressure and other abnormal phenomena, causing a larger axial force, so that dynamic and static ring contact surface separation;
The installation of mechanical seal when the amount of compression is too large, resulting in severe wear and tear face, abrasion;
Dynamic ring seal is too tight, the spring can not adjust the amount of axial movement of the ring;
Static ring too loose, when the dynamic ring floating, the static ring from the static ring seat;
The working medium in the granular material, into the friction into the operation, the detection of moving, static ring seal face;
Design selection is wrong, sealing the end of the low pressure or sealing material shrinkage larger. The phenomenon described in the trial run often, and sometimes can be adjusted by the appropriate static ring to be eliminated, but most need to re-disassemble, replace the seal.
Normal operation suddenly leak. Centrifugal pump in the operation of a small number of leakage is due to normal wear or have reached the service life, and most of the conditions due to large changes in the operation or maintenance caused by improper.
Take time, cavitation or a long time to suppress pressure, leading to seal damage;
The actual output of the pump is too small, a large number of media pump cycle, heat accumulation, causing media gasification, resulting in sealing failure;
The return flow is too large, resulting in suction tube side of the container (tower, kettle, tank, pool) bottom of the sediment for a long time outage, there is no manual re-starting when the car, the friction due to adhesion and tear off the sealing surface;
Medium corrosive, polymerizability, gelatinous material increased;
Sudden changes in ambient temperature;
Frequent changes or adjustments;
Sudden power failure or fault shutdown. Centrifugal pump in the normal operation of a sudden leak, if not found in time, often lead to greater accidents or losses, to be taken seriously and take effective measures.
Second, the pump mechanical seal maintenance in a few errors

The greater the amount of spring compression the better the sealing effect. In fact, the spring compression is too large, can lead to friction wear and tear, instantaneous burning; excessive compression of the spring to lose the ability to adjust the dynamic ring end, resulting in sealing failure.

Moving the ring seal the tighter the better. In fact, dynamic ring seal too tight no harm. One is to increase the seal between the ring and the axle wear, premature leakage; the second is to increase the dynamic ring axial adjustment, moving resistance, changes in the working conditions can not be adjusted in a timely manner; Third, the spring fatigue is easy to damage; Is to make dynamic ring ring deformation, affecting the sealing effect.

Quiet ring seal the tighter the better. Static ring ring basically in a static state, relatively tight seal effect will be better, but too tight is also harmful. One is caused by static ring seal due to excessive deformation, affecting the sealing effect; Second, the static ring material to graphite mostly, generally more brittle, excessive force easily lead to fragmentation; Third, the installation, demolition difficult, easy to damage the static ring.

Impeller lock the tighter the better. Mechanical seal leakage, the shaft between the shaft and the leakage (between the shaft leakage) is more common. It is generally believed that the shaft leakage is the impeller lock mother does not lock, in fact, lead to more leakage between the shaft factors, such as the shaft pad failure, offset, there are impurities between the shaft, shaft and sleeve with a larger shape Bit error, contact surface damage, the shaft between the various parts of the gap, the shaft head thread is too long and so will lead to leakage between the shaft. Lock the mother lock too much will only lead to premature failure of the inter-paddle pad, the opposite modest lock lock the mother, so that the paddle pad always maintain a certain degree of compression elasticity, in the operation of the lock will automatically lock the time, so that the axis is always in good Of the sealed state.

New is better than old Relatively speaking, the use of new mechanical seal effect is better than the old, but the new mechanical seal quality or material selection is not appropriate, with the larger size error will affect the sealing effect; in polymerization and permeability media, Wear, or do not change as well. Because of the static ring in the static ring seat for a long time in a static state, so that the polymer and impurities deposited as a whole, played a better sealing effect.

It is better than the demolition. Once the mechanical seal leakage will be eager to repair, in fact, sometimes sealed and no damage, just adjust the conditions or adjust the seal can be appropriate to eliminate leakage. So that both to avoid waste and can verify their own ability to judge the fault, the accumulation of maintenance experience to improve the quality of maintenance.

Hangzhou Sealcon Fluid Machinery Co., Ltd is the leading expert mechanical supplier seal from China. If you still have other questions or have interests on our mechanical seal price, please feel free to contact us.

Coke Dry Quenching Rotary Seal Valve(2023年01月28日)

chinasealcon — 2023-01-28T12:30:05+0900

https://www.china-sealcon.com/sealcon-service/coke-dry-quenching-rotary-seal-valve.html

Coke dry quenching is a kind of coke quenching method using inert gas to cool the red coke. During the dry quenching process, the red coke is loaded from the top of the coke dry quenching furnace. The low temperature inert gas is blew into the red coke layer of the cooling section of the dry quenching furnace by the circulating fan, and then the red coke is absorbed into the boiler for heat exchange. The coke after the cooling is discharged from the bottom of the dry quenching furnace through the coke exhaust system, which is composed of flat gate, adjusting rod, vibration feeder, rotating sealing valve and double chute. And the rotary seal valve is the most important part of the dry coke quenching and coking system.

The structure and principle of the coke dry rotary quenching seal valve:

coke dry rotary quenching seal valve (also called rotary discharge coke valve, format seal valve) is installed at the bottom of the dry quenching furnace. The feeding port is connected with the vibrating feeder, and the discharge port is connected with the coke exhausting sluice.

Its function is to continuously discharge the coke that is discharged from the vibratory feeder in a closed state. It can continuously and quantitatively discharge, and it also has good sealing and abrasion resistance. It can effectively control the leakage of circulating gas and dust in the dry quenching furnace and stabilize the pressure of circulating gas in the dry quenching furnace, which is an important equipment for the modern advanced dry quenching process.

There are two kinds of meaning of the “seal” in the rotary seal valve: the first one is the seal between the high-pressure cavity of the rotary seal valve and the chamber of the material. The gas seal of the high-pressure cavity takes effect at the same time with the sealing side seal of the two end of the chamber. The gas in high-pressure is generally nitrogen, with 8 k Pa to 12 k Pa pressure. The seal valve adopts the hard seal structure, which is a group of metal rings, pressed by springs and can automatically compensate the gap errors. Grease is continuously inserted between the two rings.

The second one is the seal between the feeding port of the rotary seal valve and the discharge port. It is mainly sealed by the rotor blade of the rotary seal valve and the shell, which is about 2 mm clearance. This seal is an incomplete seal, which can not only ensure the normal rotation of the rotor, but also keep the dry quenching furnace, the lower gas chamber, the flat gate, the vibration feeder and other parts under the proper pressure. It can prevent poisonous and harmful gases from causing personnel injury and environmental damage.

As one of the reliable mechanical seal suppliers in China, Sealcon's products are sold globally and used in diverse industries.
Our aim is to be one of the top hydrocarbon pump mechanical seal manufacturers.

Difference between Single and Double Mechanical Seal(2023年01月28日)

chinasealcon — 2023-01-28T12:29:20+0900

https://www.china-sealcon.com/sealcon-service/difference-between-single-and-double-mechanical-se.html

The basic types of mechanical seals for pumps are classified as single mechanical seals, double mechanical seals and series mechanical seals. The single end face mechanical seal consists of a pair of sealing ends; The double mechanical seal centrifugal pump consists of two sealing ends. The mechanical seals made up of two or two sets of mechanical seals with E single direction mechanical seals are series mechanical seals. The following two main types of mechanical seals are mainly described to understand the difference between single and double mechanical seals.

Single mechanical seal pump
The single high pressure mechanical seal has the advantages of simple structure, low manufacturing cost, convenient installation and operation, and is generally used for oil, water, organic solvents and corrosive medium. There are vertical single stage pipeline centrifugal pumps and horizontal centrifugal pumps which use single side seal pumps.

Double mechanical seal pump
Double mechanical seal parts are mostly used in flammable, explosive, toxic, granular and lubricating medium. When it is used, it needs a sealing auxiliary system, that is, the isolation fluid is inserted in the sealing cavity between the two ends, thereby improving the lubrication and cooling conditions of the mechanical seal. The pump products that use double mechanical seal are: fluorine plastic centrifugal pump or IH stainless steel chemical pump, etc.

Parts and corresponding terms of mechanical seals with single face and double faces
Gasket ring: In mechanical seals, the two ring parts whose ends are perpendicular to the axis of rotation and are relatively slipping are called seal rings.
seal face: The seal face refers to the end surface of the sealing ring which is attached to the other sealing ring at work. The face is usually ground.
Rotating ring (moving ring) : A seal ring for rotating with the shaft.
Stationary ring (static ring) : A seal ring that does not rotate with the shaft.
Compensation ring: Asealing ring with axial compensation capability.
Non - compensation ring: A sealing ring without axial compensation.
Compensation ring component: A part of an axial connection and positioning of an elastic element.
Retainer: That is used to fasten and directly drive a rotating ring with a shaft or sleeve.
Drive screw: Screw used to transfer torque.
Fastening screw: Screw used to fasten a spring seat, drive seat, or other part to a shaft or sleeve.
Clasp: Parts with axial limiting function on the compensation ring.
Reseller: a pin used to prevent the relative rotation of two adjacent parts.
Seal chamber: The annular space between the rotating shaft of the sealing part and the stationary shell.
Sealed chamber: The static shell of the containment chamber;
Elastic components: elastic parts, such as springs or bellows.
Friction couple: a set of sealing rings used for mating.

If you want to know more details of single mechanical seal vs double mechanical seal, please visit our website.

Sealcon has established long-term cooperative relationships with chemical companies. Our seals are effectively used to prevent the reaction, improving the working efficiency and service life.

Mechanical Seal Material(2023年01月28日)

chinasealcon — 2023-01-28T12:28:27+0900

https://www.china-sealcon.com/sealcon-service/mechanical-seal-material.html

According to statistics, about 80% to 95% of the leakage of mechanical seals is caused by sealing faces and friction pairs. Flygt pump seals has this problem. In addition to keeping the sealing surface parallel, it is mainly the material problem of the friction pairs. The design of most mechanical seals uses stiffer materials to make the revolving surface, so that it can rotate friction on the soft stationary surface. The rotating surface is now made of stainless steel or harder material, such as tungsten carbide or silicon carbide. Graphite or Teflon is used for stationary surfaces.

Material selection of mechanical seal friction pairs is a complex problem. In general, it should be selected according to the properties of the working medium, pressure, temperature and rotation speed, and the ability to withstand short time friction when the pair is started or the liquid film is destroyed. Taking into account the above factors, the material of the friction pair should have the following conditions:

But the environment is different and the mechanical seal material selection is different. When we choose mechanical seal cover, we should take care of the consistency of material selection and take care of the difference of environmental corrosion; the temperature, concentration and pressure are different. The material is different from the material; the same medium temperature, concentration and pressure are different, the corrosion is different. Different, the selection is different.

In March 2017, Hangzhou Sealcon Fluid Machinery Co., Ltd set up a new office in xihu district, Hangzhou. And the company's factory is still in Jiande,Hangzhou.
Office address: A1-3-603 xixi center, wenyi west road, xihu district, Hangzhou, 310012, China
Factory address:NO.106 Qilinwu,Xin’anjiang,Jiande Hangzhou,311600,China

Mechanical Seal On The Use Of Rotating Equipment(2023年01月28日)

chinasealcon — 2023-01-28T12:27:39+0900

https://www.china-sealcon.com/sealcon-service/mechanical-seal-on-the-use-of-rotating-equipment.html

Mechanical seal of the symptoms and elements
Rotating mechanical seal parts of the rotation equipment in the running side, sealed face often show wear, hot cracking, deformation, damage and other conditions, tension with a long time will be loose, cracking and corrosion. Auxiliary seal will also show cracks, distortion and deformation, break and other conditions.
Mechanical seal oscillation, fever problems elements. During the rotation of the device, the dynamic ring conforms to the rough face, and the gap between the dynamic ring and the seal cavity is too small, because the vibration causes the bump to cause oscillation. Sometimes due to sealing the end of the corrosion resistance and poor temperature function, or lack of cooling or face in the device when the folder with particles of impurities, will also cause the mechanical seal of the oscillation and heat.
Mechanical seal media leakage of the elements of the problem

Static pressure test leak. High pressure mechanical seal in the device because not careful, usually the sealing end of the face was bumped, deformation, damage, finishing is not net, with granular impurities, or because the positioning screw loose, gland is not pressed, the machine, equipment accuracy , So that the sealing surface is not completely fit, will form a media leak. If the shaft is leaked, it is not compressed or tightened or not damaged when the sleeve seal is installed. Periodic or paroxysmal leakage. Mechanical seal of the rotor components of the periodic oscillation, axial movement is too large, will form a leak. Mechanical seal of the sealing surface to have a certain pressure, so the ability to play a sealed role, which requires the mechanical seal of the torsion spring to have a certain amount of compression, to the sealing end of a thrust, rotating up to seal the sealing request More pressure. In order to ensure that this one pressure, mechanical seal request pump shaft can not have too much channeling, usually to ensure that within 0.25mm. But in the practice planning side, because the planning is unreasonable, usually pump shaft occurs a lot of channeling, the use of mechanical seals is very bad luck. Mechanical seal of the regular leakage. There are many aspects of the mechanical seal often leaks. Top of the list, because the shortcomings of the seal end of the regular leakage caused. The second aspect is the auxiliary seal caused by the frequent leakage. The third aspect is the fault caused by the shortcomings of tension. In other respects, it also contains leakage, transmission, tightening and thrust parts caused by rotor oscillation, resulting in poor quality or loosening of the parts, mechanical leaks caused by the organization of the mechanical seal. Mechanical seal oscillation is too large. Mechanical seal oscillation is too large, eventually resulting in the loss of sealing effect. But the mechanical seal is too large elements of the mechanical seal itself is not only the elements of the pump, the other parts of the pump is also the origin of vibration, such as pumping shaft planning is unreasonable, the processing of elements, bearing accuracy can not, the parallelism of the coupling Poor, radial force and other elements.

Ways to deal with the adoption of the problem

If the mechanical seal parts are defective, you need to replace parts or progressive parts of the machining accuracy, improve the mechanical seal their own processing accuracy and the processing of other parts of the pump body parts of the mechanical seal is very beneficial. In order to improve the sealing effect, the dynamic ring of the conflict surface of the brightness and unevenness of the request is higher. The width of the conflicting surface of the dynamic ring is not large, usually between 2 and 7 mm.
Mechanical seal oscillation, heat treatment
If the gap between the dynamic ring and the sealed cavity is too small, it is necessary to increase the inner diameter of the seal chamber or reduce the rolling outer diameter, at least 0.75mm to ensure the gap. If the conflict is not correct pairing, it is necessary to change the dynamic ring material, so that temperature, corrosion resistance. This will cut the mechanical seal of the oscillation and heat.
Mechanical seal leakage treatment
Mechanical seal leak is due to a variety of factors, we have to ask in detail detailed treatment. In order to reduce the amount of leakage, the mechanical seal must be strictly in accordance with the technical requirements of the device, together with the following matters.
(1) device to clean and bright. Mechanical seal parts, tools, smooth oil, wipe the mechanical seal material to be very clean. The seal end face of the dynamic ring is wiped with a soft gauze. (2) trim chamfering round. Shaft, sealed cover and other chamfers to be trimmed smooth, the shaft and the cover of the fillet to sand polish. (3) device auxiliary seal ring, the rubber auxiliary seal cannot use gasoline, kerosene soaking scrub, to avoid swelling deformation, premature aging. Dynamic ring assembly, the hand press the compensation ring, check is not in place, is not sensitive; elastic ring is not positioning solid. After moving the ring device, it is necessary to ensure that it is sensitive to axial movement on the shaft.
Pump shaft channeling large processing
Reasonable planning of the axial force of the balance of equipment, to eliminate the axial channeling. In order to satisfy this request, on the multi-stage centrifugal pump, the planning scheme is: the balance plate and the axial thrust bearing, the axial force is balanced by the balance plate, and the axial limit is restricted by the axial thrust bearing.
Add auxiliary washing system
Sealed chamber sealed medium rich in particles, impurities, it is necessary to scour, or because of the crystallization of the separation, particles, impurities in the accumulation of mechanical seal of the tension spring failure, if the particles into the conflict, will lead to mechanical seal of the agile damage. Therefore, the mechanical seal of the auxiliary scouring system is very important, it can effectively maintain the sealing surface, play a cooling, smooth, washed away debris and so on.
Pump oscillation method
In the process of production of pump products, in strict accordance with the norms and procedures to perform, to eliminate the source of oscillation. Pump, motor, base, field piping and other auxiliary equipment in the field device, to strict checks to eliminate the source of oscillation.

Above a brief discussion of the mechanical seal on the use of rotating equipment and the emergence of the problems, and later encountered mechanical seal problems, the first to consider the mechanical seal of their own elements of influence, and then think about the mechanical seal outside the impact of some of the elements. For example: in the analysis of mechanical seals of the quality of the accident elements, to consider the other parts of the pump on the mechanical seal of the impact of the adoption of methods to continue to improve the role of mechanical seals.

If you want to know more kinds of mechanical seals by Sealcon, please visit our website.

STATIONARY SEATS(2022年09月27日)

chinasealcon — 2022-09-27T15:48:08+0900

https://www.china-sealcon.com/mechanical-seals/stationary-seats/

Rotary and stationary rings are the main components of a mechanical seal, which is a device that helps join systems or mechanisms together by preventing leakage. Stationary Seats (Mating Rings) are the non-rotating primary seal ring mounted in the gland plate or other motionless structural parts of the rotating equipment. The mechanical seal stationary mechanical seal seat is made of stationary ring/mating ring and Secondary sealing components, such as PTFE, Viton, NBR etc. The static seal ring (also known as the stationary ring) work with the rotary sealing surface to prevent media leakage.

Mechanical Seal Stationary Seat for Sale

Our mechanical seal stationary seats compatible with a variety of OEM pumps and components. We currently supplies the following stationary seats J with different specifications. Choose the right stationary seat for optimal working performance. If you are looking for a reliable seal seat company, Sealcon can be a good choice!

Material Combination of Stationary Seats
Pump mechanical seal work at high-speed rotation, withstand a certain pressure to prevent the media corrosion, temperature changes. Therefore, the requirements of the material in the following areas:
With the high modulus of elasticity, lower strength and coefficient of linear thermal expansion coefficient, excellent wear resistance and self-lubrication and good impermeability.
Prevent damage from medium corrosion, abrasion, dissolution, and swelling caused.
Good thermal conductivity, heat resistance, cold resistance and temperature mutation adaptability.
Material of Stationary Face
Sealcon offers a variety of stationary face materials and gladly offers helpful advice of which materials are best suited for your exact operating conditions:
tungsten carbide, silicon carbide, ceramic, carbon, etc.
Secondary sealing components: NBR, EPDM, VITON, Aflas, FEP, FFKM, etc.
Stationary Seat Classification
Mechanical seal seat has many different shapes, Generally can be divided into 2 groups:

1. Boot Mounted/Cut mounted stationary
For example,
Bergmann mechanical seal G60, G24, G50, G55 seat,john crane mechanical seal M, N stationary.
2. O-ring mounted Stationary
For example:
Burgmann Mechanical Seals G6,G606,G4,G13 ,G9 ,G16 ,G46 ,G9,G9A seat,John Crane Mechanical Seals BO,BS,BP,BD,PG,A,V,W,WG Stationary Seat ,Vulcan 12DIN seat etc.

Difference between Rotary Mechanical Seal and Stationary Mechanical Seal

The Rotary ring rotates with the rotation of the main shaft, and the stationary ring is a sealing ring which is fixed on the mechanical seal sleeve and does not rotate with the shaft.The end of the spring is usually a rotary ring. But There are some exceptions. For high temperature and high-speed conditions, some seal products are designed to rotate in a stationary ring. The moving ring is stationary. The moving ring only moves axially under the force of the spring.Mechanical seal sealing surface usually has a wider face and a narrower face .the one with the narrow face is usually the rotary ring, the one with the wider face is the stationary ring.

Installation Notice of Mechanical Seal Stationary Seat

Before installation, it is necessary to check whether the sealing parts are enough and whether the components are damaged or not. Especially, there are no defects such as bumps, cracks, and deformation on the moving and static rings. If there is a problem, repair or replacement of new spare parts is required.the gland should be corrected after the coupling. The bolt should be tightened evenly, to prevent the gland section deflection, with the feeler or special tools to check the points, the error should be not greater than 0.05 mm.The rotary ring should maintain flexible mobility, the rotary ring should be able to automatically spring back after the pressure to the spring.the installation process must not be allowed to use the tool directly tap the sealing element, you must use special tools to beat to prevent the sealing element damage.mechanical seal components and their assembly contact surface must be cleaned with acetone or anhydrous alcohol before installation. During the installation process should be kept clean, especially rotary, stationary ring and auxiliary sealing elements should be free of impurities, dust. Dynamic and static ring surface should be coated with a layer of clean oil or turbine oil.

There are many top mechanical seal manufacturers, but Sealcon are one of the best choices for you. we provide quality mechanical seals, cartridge seal vs mechanical seal, cartridge type seal and etc. For more information, please feel free to contact us!

SINGLE CARTRIDGE SEALS(2022年09月27日)

chinasealcon — 2022-09-27T15:47:14+0900

https://www.china-sealcon.com/mechanical-seals/single-cartridge-seals/

Our single cartridge mechanical seal is manufactured by balanced seal-face technology, helping to reduce energy comsumption whilst increasing reliability.

Cartridge Mechanical Seal Types

Non cartridge mechanical seal is assembled by the rotary ring, stationary ring, spring, secondary seal( o rings, PTFE), gland and other mechanical seal parts together as a collection, known as the cartridge seal, sometimes also called the cartridge mechanical seal parts.

Features of Single Cartridge Seals
faster and easier replacement of pump shaft seals
less downtime
reliable start-up after a sealing change
Advantage of Single Cartridge Seals
ready-to-install: components include rotating components, bushings and glands
gage bolts applied for the most gland box
easy to replace the packing or bearing
easy to install in uneasy install place
Used for longer time than non-cartridge mechanical seal

Overview of Cartridge Type Mechanical Seal
A single cartridge type mechanical seal consists of two very flat surfaces that are pressed together by a spring and slide against each other. The single mechanical seal is a mechanical seal composed of 1 set of seal face. the sealing structure is simple, easy to manufacture and install features. Generally, cartridge type mechanical seal is used for the medium with good lubricity and allows a slight leakage. Single cartridge seals are one of the most commonly used centrifugal pump seal types. Single cartridge pump seals do not work well when the media is the toxic, flammable, explosive and strict requirement of leakage.

Mechanical seals tend to leak a vapor from the high-pressure side to the low-pressure side. This fluid lubricates the seal faces and absorbs the heat generated from the associated friction, which crosses the seal faces as a liquid and vaporizes into the atmosphere. So, it's common practice to use a single cartridge mechanical seal if the pumped product poses little to no risk to the environment.

Material of Single Cartridge Mechanical Seal
When a single cartridge seals used in the oil-filled motor, it is not only necessary to prevent the machine outside the impurities, sand and water to enter, but also to prevent the leakage of oil within the machine, so sealing requirements is higher, sealing ring material requirements need to be good, its sealing face material is made of tungsten carbide or silicon carbide. If it is installed on the shaft of the water-filled motor shaft, it only requires sand control. The sealing ring can be made of alumina ceramic, silicon nitride or other harder materials, so the cost is relatively low.

Recommended Applications of Single Cartridge Seals
General industrial applications including chemical processing, food and beverage, petrochemical processing, pharmaceutical, wastewater and power generation.
Centrifugal pump, Chemical pump, Slurry pump, Mixer, Agitator, Circulation pump, Submersible electric pump, Reactor, Oil pump etc.

Difference between Cartridge Mechanical Seal and Non-Cartridge Mechanical Seal
Cartridge mechanical seal has a sleeve and gland; non-cartridge seals only have the rotary and stationary ring.The installation error rate of the Common non-cartridge mechanical sea is higher than the cartridge mechanical seal. Therefore, use cartridge shaft seal can greatly reduce the occurrence of mechanical seal failure.Since the cartridge mechanical seal does not require any adjustment of the mechanical seal by the installer (such as spring, sealing surface, etc.), only the bolts need to be tightened, which greatly improves the reliability of the mechanical seal installation.

Seal Spare Parts Spring(2022年09月27日)

chinasealcon — 2022-09-27T15:46:35+0900

https://www.china-sealcon.com/mechanical-seals/seal-spare-parts-spring.html

Seal Spare Parts Spring

Introduction of Seal Springs
For a mechanical seal, the initial closing force ensures that the seal will function properly from startup. In end- or rotating-face mechanical seal designs, the initial closing force is provided by a spring component, which can be a single coil spring, multiple coil springs, a deflected bellows unit (elastomer or metal), or formed or flat springs. Initial biasing forces also can be created by magnets, compressed elastomers or any other means of applying a closing force between sealing elements.

For single spring seal, the seal body is sprung by either a metal or rubber bellows, a series of small springs, or by a single coil spring. These seals must be fitted with the correct coil spring for the rotation of the shaft. The major cause of failure of this type of seal is a broken drive spring. This is due to the use of 316 SS stainless steel as the coil material. The spring has to maintain the drive of the seal head and to flex with the seal head as it rotates. Any mis-alignment in the stationary face will cause the seal head to flex twice in every rotation. Stainless steel suffers from chloride stress corrosion therefore as the spring is under constant stress and probably exposed to chlorides, cracking will occur in the spring, leading to complete failure.

The same effect can occur when the seal is fitted with a series of small springs if they are constructed from SS316. A better material to use is Hastelloy C which does not suffer from chloride stress corrosion.

Function of Spring
The purpose of the springs is to hold the seal shut when the pump is stopped. In the case of the many less expensive seal the spring is also used to drive the rotating head of the seal.

When the pump is running the pressure in the seal chamber, being higher than the outside pressure, acts upon the seal surfaces to increase the closing force. Higher closing force means that any lubricating effect between the seal faces is marginalized leading to higher friction, more heat generation, and increased wear. Seal design can mitigate this increase in closing force. The design of a balanced seal incorporates surfaces to reduce the load imposed on the seal by the chamber pressure. By this means a manufacturer can reduce the pressure on the seal faces and produce the longer life of the seal.

ShapesDirections
CoilLeft
ConicalRight
Wave
Bellow

Materials of the Seal Spare Parts Spring
SS304
304 is austenitic (Ostrom field) stainless steel, is the most common and most widely used stainless steel for mechanical seals'spring.
Because it contains nickel, it is more resistant to corrosion and heat than steel alloys.
SS304 is commonly used in household appliances, building decoration, parts of vehicles, medical equipment, food industry, etc.
SS316
SS316 (American Steel Grade) is a molybdenum-containing stainless steel that has good resistance to chloride attack. Its corrosion resistance is superior to that of SS304 stainless steel and has good corrosion resistance and corrosion resistance to marine and aggressive industrial atmospheres. In the intermittent use of fewer than 1600 degrees and in 1700 degrees below the continuous use, SS316 stainless steel has good oxidation resistance. It has good weldability and can be welded using all standard welding methods. But SS316 stainless steel cannot be overheated for hardening.

SS316 stainless steel is mainly used in pulp and paper equipment heat exchangers, dyeing equipment, film processing equipment, pipelines, external timber for the coastal area.
Hastelloy C
Hastelloy is nickel-based corrosion-resistant alloy; mainly divided into nickel-molybdenum alloy and nickel-chromium-molybdenum alloy two broad categories.

Characteristics of Seal Spare Parts Spring
In the two states of oxidation and reduction of the atmosphere, it has excellent corrosion resistance to most corrosive media.
Excellent resistance to pitting, crevice corrosion and stress cracking corrosion.
Hastelloy C is suitable for heat exchangers, bellows compensators, chemical Equipment, flue gas desulfurization and denitration, paper industry, aerospace applications, acidic Environments.

There are many cartridge seal suppliers, but Hangzhou Sealcon Fluid Machinery Co., Ltd are one of the best choices for you. we provide quality mechanical seals, spring seal, spring seal ring and etc. For types of mechanical sleeve or more information, please feel free to contact us!

Seal Spare Parts Sleeve(2022年09月27日)

chinasealcon — 2022-09-27T15:45:54+0900

https://www.china-sealcon.com/mechanical-seals/seal-spare-parts-sleeve.html

Seal Spare Parts Sleeve

In most pumps, the portion of the shaft that is under the sealing arrangement is covered with a shaft sleeve. The shaft sleeve is a sleeve of metal, usually bronze or stainless steel, that is designed to either slide or thread onto the shaft. It acts as a shield for the shaft assembly in pumps and compressors. The shaft sleeve is mounted over a shaft and shaft assembly to protect it in a corrosive environment.

Mechanical seal shaft sleeve are commonly found in single stage pumps. The pump shaft usually offers protection from corrosion and erosion.

Sealcon manufacture shaft sleeves with OEM sizes and materials, if you are interested in our products, please feel free to contact us.

Function of Seal Spare Parts Sleeve
The basic function of a mechanical seal sleeve is to protect the shaft from packing wear at the stuffing box. Shaft sleeves help protect the running surface of the shaft seal or the surfaces in contact from damage or abrasive wear. The hardness of the material used to construct the shaft must be sufficient; otherwise, it may cause a shaft sleeve to fail.

Shape of sleeve mechanical part
Shaft Sleeve is rotating body parts, the length of which is larger than the diameter. A shaft sleeve is usually a hollow metal tube, cylindrical in shape. Generally, it is composed of the concentric outer cylindrical surface, conical surface, the hole and the thread and the corresponding end surface. Depending on the shape of the structure, the shaft sleeve can be divided into optical axis shape, stepped shaft shape, hollow shaft shape and crankshaft shape. When the aspect ratio of the shaft is less than 5, it is called the short axis, when more than 20, it is called the slender shaft. Most of the shaft sleeve is between the two.

A hook-type sleeve used to be popular for overhung impeller pumps that operate at high temperatures because it is clamped at the impeller end and the rest of the sleeve is free to expand axially with temperature changes. But with the increased use of cartridge-type mechanical seals, the use of hook-type sleeves is diminishing.

Material of Seal Spare Parts Sleeve
SS316
Alloy 20
Silicone carbide
Tungsten carbide
Hastelloy B or C
Titanium

Ceramic coated sleeves, using PTA welding or similar, have been used with some success for many years, but these still have many limitations.

New solid tungsten carbide shaft sleeves are now available, in a grade selected specifically for shaft sleeves. This is not a coating, but a solid sleeve. Field results have seen sleeves that were lasting days last for more than a year. They can be used in the vast majority of corrosive services, and are not more expensive than ceramically coated sleeves.

The reduced flush water consumption, reduced pollution, increased reliability and ease of maintenance are being well received globally. They are quickly becoming the sleeve of the future.

There are many seal ring suppliers, but Hangzhou Sealcon Fluid Machinery Co., Ltd are one of the best choices for you. we provide quality mechanical seals, shaft sleeve mechanical seal, sleeve mechanical seal, hook sleeve mechanical seal, shaft and sleeve arrangement and etc. For types of mechanical sleeve or more information, please feel free to contact us!

Seal Spare Parts Sealing Rings(2022年09月27日)

chinasealcon — 2022-09-27T15:44:16+0900

https://www.china-sealcon.com/mechanical-seals/seal-spare-parts-sealing-rings.html

Seal Spare Parts Sealing Rings
Brief Introduction of Sealing Rings
The seal ring is a ring seal with the notch, it is placed in the ring groove of the sleeve, the sleeve rotates together with the shaft, and the sealing ring is elastically attached to the inner hole wall of the stationary part when it is pressed, so it can play a sealing role. Each contact surface needs to be hardened and polished. The seal ring is made of chromium wear resistant cast iron, which can be used for sliding speed less than 100m/s. If the slip speed is 60~80m/s, tin ring bronze can also be used to make the sealing ring.

Seal Ring Technical Requirements
the flatness of the sealing end surface is not more than 0.0009mm (that is, the three monochromatic light interference bands); the Ra value of the hard material sealing end surface roughness is not more than 0.2μm; the Ra value of the soft material sealing end surface roughness is not more than 0.4μm;Sealing rings surface should not have cracks, scratches, porosity and porosity and other defects that affect performance.
seal ring sealing surface and the auxiliary seal ring contact surface parallelism according to GB / T1184.1996 level 7 accuracy requirements.
The verticality of the sealing rings end face and the inner (or outer) circle surface of the auxiliary seal ring shall be in accordance with the accuracy of Level 7 of GB / T1184 and 1996.
seal ring and auxiliary seal contact surface roughness Ra. Value is not more than 3.2μm; cylindrical or bore size tolerance h9 or H9.

Flexible Graphite Sealing Rings
1. Flexible graphite sealing ring Flexible graphite ribbon or flexible graphite packing, molded into different sizes of ring products.
2. Adapt to hot water, high temperature, high pressure steam, heat exchange fluid, nitrogen, organic solvents, hydrocarbons, cryogenic liquids and other media.
3. Used for compressors, pumps, valves, chemical equipment, meters and so on.
4. Pressure (Mpa): 25 Temperature (℃): - 200 ~ 850 Linear speed (m / s): 30 PH value: 0 ~ 14
5. Graphite rings are divided into flexible graphite and carbon-graphite rings.
Carbon - graphite ring is mainly used in mechanical rotation of the seal.
Carbon - graphite ring with high temperature corrosion-resistant wear-resistant properties.

Pump Seal Ring Role
Pumps are machines that transport liquids or pressurize liquids. It will be the prime mover mechanical energy or other external energy transfer to the liquid, so that the liquid energy increases, mainly used to transport liquids including water, oil, acid and alkali, emulsion, suspension and liquid metal, but also can be transported liquid, gas mixture As well as liquids containing suspended solids. Pump performance of the technical parameters of flow, suction lift, lift, shaft power, water power, efficiency, etc .; according to different working principle can be divided into volume pumps, vane pumps and other types. Volumetric pumps utilize the variation of their working chamber volume to transfer energy. Vane pumps use the interaction of rotating blades and water to transfer energy, such as centrifugal pumps, axial flow pumps, and mixed flow pumps.

The role of the pump sealing ring is to prevent abrasion between the pump impeller and the pump housing to improve the water flow at the inlet of the pump and improve pump efficiency.

There are many seal ring suppliers, but Hangzhou Sealcon Fluid Machinery Co., Ltd are one of the best choices for you. we provide high quality mechanical seal, quality mechanical seals, seal rings for sale and etc. For more information, please feel free to contact us!

SEAL SPARE PARTS(2022年09月27日)

chinasealcon — 2022-09-27T15:42:55+0900

https://www.china-sealcon.com/mechanical-seals/seal-spare-parts/

Sealcon supplies a series of pump mechanical seal parts, which are developed and manufactured by using the latest technology. All the mechanical seal parts have a smooth flawless performance and have a long service life. We supply standard pump seal parts as well as customized products. Customers can send us their drawings or samples. We can do your personalized mechanical seal spare parts with special departments.

Mechanical Seal Parts

Seal Spare Parts Sealing Rings
The sealing rings are designed to seal off and retain the medium inside the chamber. It is ensured by the surface geometry of the combined seal rings. Sealing rings are widely used to prevent abrasion between the pump impeller and the pump housing to improve the water flow at the inlet of the pump and improve pump efficiency.

Seal Spare Parts Spring
Seal spare parts spring is mainly used to hold the seal shut when the pump is stopped. In many cases, the spring is also used to drive the rotating head of the seal. Being made of high-quality materials, our spring spare parts are at a reasonable price, offering you the best solution!

Seal Spare Parts O-ring
The o-ring is a rubber seal with a cross section (or O). Its main function is sealing, such as gas-sealing, water-sealing, oil-sealing and so on. The most common materials include EPDM, Nitrile, Buna-N, Viton, FFKM, etc. Both standard and non-standard sizes of o-rings are available.

Seal Spare Parts Sleeve
The sleeve can protect the shaft from packing wear at the stuffing box and protect the running surface of the shaft seal or the surfaces in contact from damage or abrasive wear. OEM sizes and materials of sleeves are available from Sealcon.

Seal Spare Parts Gland
The gland of the seals can reduce internal leakage of the machine and improve its volume efficiency. It's a cost-effective way to use gland in the mechanical seals. The raw materials include SS410, SS304, SS316, Alloy-20, etc. For more information, please contact us.

There are many mechanical spare parts suppliers, but Hangzhou Sealcon Fluid Machinery Co., Ltd are one of the best choices for you. we provide quality mechanical seals, quality mechanical seals and etc. For mechanical seal parts list or more information, please feel free to contact us!

PTFE WEDGE MECHANICAL SEALS(2022年09月27日)

chinasealcon — 2022-09-27T15:41:44+0900

https://www.china-sealcon.com/mechanical-seals/ptfe-wedge-mechanical-seals/

China-Sealcon is committed to providing the best service and products in fluid industry. And Sealcon's PTFE Wedge Mechanical Seals can replace the mechanical seals produced by John Crane and Burgmann and be widely used in petroleum, chemistry, refinery, paper making, pharmacy, power and auto industry.

Hangzhou Sealcon Fluid Machinery Co., Ltd is a professional wedges supplier for PTFE Wedge mechanical seals to suit all the major pump equipment manufacturers. PTFE wedge mechanical seals are multi-spring types with a PTFE wedge to locate the rotating face against the stationary face. They can also be supplied with an o ring to form a secondary seal on the shaft.

Features of PTFE Wedge Seal
Very typical PTFE wedge mechanical seals include John Crane 109, John Crane 109B, and John Crane 58U, 59U. Many times we can refer to these types of models as a reference, to have a further study about the PTFE wedge mechanical seal. We can take type 109 as an example. Type 109 is a Shaft-mounted Multi-spring Wedge Seal for use on corrosive applications, typically for chemical or hydrocarbon processing. The features of the John crane 109 mechanical seal is that the Shaft-mounted wedge seal, with PTFE or graphite-based wedges for corrosion resistance or high-temperature application. And the Parameters are as following shows:
TEMPERATURE LIMITS: -148°F to 932°F/-100°C to 500°CPRESSURE LIMITS: 24 bar(g)SPEED LIMITS: 25m/s

Application Field of PTFE Wedge Seals
From the above example, we can see that the PTFE Wedge Mechanical Seals are standards for use where expensive and corrosive liquids are being processed, especially for extremely corrosive fluid applications such as sulphuric, nitric, phosphoric or hydrochloric acids. Like most materials every choice has an up and a down side. Because PTFE will handle most chemical applications, chemical attack is no longer an issue. One the down side PTFE wedges can cause fretting of your sleeve or shaft if you have not hard surfaced your shaft or sleeve (plasma coating).

A teflon wedge seal for general low- to medium-pressure duties in the chemical, refinery, petrochemical and pharmaceutical industries. Alternative seat designs and material options are available to suit product and operating conditions of applications. Typically applications of a corrosive nature, cryogenic and high temperature.The stationary element of your seal will require a PTFE gasket. But it's not much good to have a PTFE on the rotary and then use an elastomer on the seat. We have seen it done, and because it is a static application some have gotten away with it, but it is not recommended. Most commonly the seat will be a L-shaped or Clamped mount style to allow space for a PTFE gasket to be used as the secondary sealing element

Why Choose Sealcon's PTFE Wedge Seals
Sealcon has been offering PTFE Wedge Seals many years with emphasizing strict quality control, product reliability and product diversity. With the leading design and development capabilities, now Sealcon mechanical seals company widely cooperated with global customers and established close connection with many famous enterprises in fluid industry market.

There are many china mechanical seal manufacturers, but we are one of the best choices for you.

Pump(2021年)

chinasealcon — 2021-11-23T15:47:07+0900

https://www.china-sealcon.com/water-pump/

With years' experience, China Sealcon Seals has provided numerous solutions for different industries. Adopting advanced sealing technology, Sealcon's quality mechanical seals are sold worldwide and receive good comments.

Pumps are usually used to lift liquids, to transport liquids or to increase the pressure of liquids, that is, the mechanical energy of the original motive can be changed into liquid energy to achieve the purpose of pumping liquid.

The technical parameters of water pump wholesale performance are flow, suction, lift, shaft power, water power, efficiency, etc. According to different working principle, it can be divided into volume water pump, vane pump. The volumetric pump uses the change of its studio volume to transmit energy; Vane pump is used to transfer energy through the interaction of rotary blades and water, with the centrifugal pump, axial flow pump and mixed flow pump.

Precautions for installation of water pump
1. The basic coordinates, elevation, dimensions and reserved holes shall meet the design requirements. The basic surface level and concrete strength shall meet the installation requirements of the equipment. The plane size of the best water pump foundation shall be 100~150 mm wide at the base of the pump set when the vibration isolation is installed. The vibration isolation installation should be 150 mm wider than the water pump vibration isolation base. The top elevation of the foundation shall be higher than 100 mm above the surface of the pump room when installed without vibration isolation, and 50 mm above the surface of the pump room when the vibration isolation is installed, and no water will be formed. There are drainage facilities around the base, which can be used to drain water or prevent leakage.

Pump Wear Plate(2021年)

chinasealcon — 2021-11-23T15:46:37+0900

https://www.china-sealcon.com/pump-spare-parts/pump-wear-plate.html

For users, the maintenance of daily use is more important to prolong their life, so the following two points must be done:

tighten the wear-resistant pump wear plate (ring) of the nut regularly. After the use of a period of time, there is a little wear on the wear-resisting layer due to the existence of abrasive wear in the braided concrete cylinder, so that a small amount of wear is made on the wear-resistant layer, and the loosening of the locking nut will appear. The thrust ring is not compressed without producing elastic force. There will be a certain gap between the wear plate and the wear-resisting ring. At this time, the fine particles in the concrete will enter the wear plate and the wear-resisting ring, forming a low-stress abrasion wear.

Pump Spare Parts(2021年)

chinasealcon — 2021-11-23T15:46:10+0900

https://www.china-sealcon.com/pump-spare-part/

Impeller: it is the only element in the spare part water pump to transfer energy to the liquid. The pump allows the mechanical energy to become the pressure of the liquid to increase the pressure of the liquid. The impeller is fixed on the shaft with the key, and the shaft is rotated by the original motive, passing the energy of the original motive to the liquid through the blade. According to the liquid flow impeller channel classification, it can be divided into single suction impeller (have an entry in the side of the impeller) and double suction impeller (liquid from symmetrically on both sides of the impeller flow in the impeller passage). According to the main flow direction of the liquid relative to the axis of rotation, the impeller can be divided into radial flow impeller, axial flow impeller and mixed flow impeller. According to the structure of impeller, it can be divided into the closed impeller, open impeller and semi-open impeller. The closed impeller consists of a number of blades and the wheel cover and wheel disk on both sides. The space between two adjacent blades and wheel cover and wheel disk is the flow path of the liquid. Open impeller only has the blade, without wheel cover and wheel; Half open impeller only is a wheel on one side of the blade.

Shaft: it is an important part of the transmission of mechanical energy. The torque of the original motive is transmitted to the impeller through it. The pump shaft is the main part of the pump rotor, the shaft is equipped with the impeller, axle sleeve, balance plate and other water pump spare parts. The pump shaft is supported by both ends of the bearings, which is high-speed rotary in the pump. Therefore, the pump shaft should be capable of bearing capacity, abrasion resistance and corrosion resistance. The material of the pump shaft is usually made of carbon steel or alloy steel.

The seal ring is a sealing device installed between the rotating impeller and the stationary pump case (a combination of middle and guide leaves). Its function is to increase the resistance of liquid flow between high and low-pressure cavity in the pump by controlling the gap between them and reduce leakage.

Shaft sleeve: the shaft sleeve is used to protect the pump shaft from corrosion and wear. If necessary, the axle sleeve can be replaced.

As one of the leading pump spare parts suppliers and pump spare parts manufacturer, we offer water pump spare parts list and pump spare parts list, if you are interested in them, please contact us.

Pump & Spare Parts(2021年)

chinasealcon — 2021-11-23T15:45:46+0900

https://www.china-sealcon.com/pump-and-pump-spare-parts/

Classification of booster pump spare parts
Generally, there are the impeller, bearing, sealing device, sealing material, main shaft, key, inducing wheel and other materials.

Multistage Centrifugal pumps(2021年)

chinasealcon — 2021-11-23T15:45:15+0900

https://www.china-sealcon.com/pump/multistage-centrifugal-pumps.html

Sealcon China supplies a wide range of seal products for pump. Both standard and custom-designed sealing products are available. Top-quality mechanical seals for agitator are also in stock. The top-quality seals can be used for various applications including ISO, DIN, API, etc. 7x24h postpurchase service is promised.

A multi-stage centrifugal pump is a collection of two or more centrifugal pumps that have the same functions. In the fluid channel structure, the performance in the first level of medium pressure mouth and second-level imports are interlinked, the second level of medium pressure and the third level of imports are interlinked, so formed a multistage centrifugal pump series of institutions. The significance of multistage centrifugal pump assembly is to improve the setting pressure.

The structure of a multi-stage centrifugal pump
The multistage centrifugal pump parts are mounted on the same pump shaft with several impeller, and the outer part of the impeller is the liquid diversion device and the pump shell. According to the assembly method, there are two kinds: the horizontal split-type multi-stage centrifugal pump, which divides the pump body and the guide device along the axis of the pump shaft, making it into the upper and lower multistage pump parts. The sectional multi-stage centrifugal pump cuts the pump body and the liquid diversion device along the pump shaft between the impeller to cut into several segments perpendicular to the pump shaft.

Characteristics of multistage centrifugal pump
It covers an area of small area. The center of gravity of the pump coincides with the center of the pump foot, so it runs smoothly, it has small vibration and long life.
The multi-stage centrifugal pump has the same caliber and the same level centerline does not need to change the pipeline structure, it can be directly installed in any part of the pipeline, so the installation is very convenient.
The electric motor and the rainproof cover can be directly used outdoors, without the need to build the pump room, which greatly saves the infrastructure investment.
The multistage centrifugal pump lift can meet the different requirements by changing the pump series (the number of impellers), so the application range is wide.
The shaft seal is mechanical seal with hard alloy, the seal is reliable, no leakage and the mechanical loss is small.
High efficiency and energy saving, beautiful appearance.
The casting of the inner part of the above 50 calibers is formed.
There are so many multistage centrifugal pump suppliers.

Magnetic Pumps(2021年)

chinasealcon — 2021-11-23T15:44:47+0900

https://www.china-sealcon.com/pump/magnetic-pumps.html

Chemical Centrifugal Pumps(2021年)

chinasealcon — 2021-11-23T15:44:21+0900

https://www.china-sealcon.com/pump/chemical-centrifugal-pumps.html

Matters needing attention
The access to the water pipe must be kept in a sealed state.
Check the running status of the centrifugal pump regularly, and if the abnormal situation is found, it should be stopped in time.
Do not appear the state of the turbidity of the chemical centrifugal pump, but the centrifugal pump is still running for a long time.
Do not appear when the normal flow of the chemical centrifugal pump is running, the motor of the centrifugal pump is still running in the state of the supercurrent for a long time.
The chemical centrifugal pump cannot be operated in a state of no person, and special personal should be supervised.

Mechanical Seal On The Use Of Rotating Equipment(2021年08月26日)

chinasealcon — 2021-08-26T16:21:14+0900

https://www.china-sealcon.com/sealcon-service/mechanical-seal-on-the-use-of-rotating-equipment.html

Mechanical seal of the symptoms and elements
Mechanical seal parts of the rotation equipment in the running side, sealed face often show wear, hot cracking, deformation, damage and other conditions, tension with a long time will be loose, cracking and corrosion. Auxiliary seal will also show cracks, distortion and deformation, break and other conditions.
Mechanical seal oscillation, fever problems elements.During the rotation of the device, the dynamic ring conforms to the rough face, and the gap between the dynamic ring and the seal cavity is too small, because the vibration causes the bump to cause oscillation. Sometimes due to sealing the end of the corrosion resistance and poor temperature function, or lack of cooling or face in the device when the folder with particles of impurities, will also cause the mechanical seal of the oscillation and heat.
Mechanical seal media leakage of the elements of the problem

Static pressure test leak. Mechanical seal in the device because not careful, usually the sealing end of the face was bumped, deformation, damage, finishing is not net, with granular impurities, or because the positioning screw loose, gland is not pressed, the machine, equipment accuracy , So that the sealing surface is not completely fit, will form a media leak. If the shaft is leaked, it is not compressed or tightened or not damaged when the sleeve seal is installed. Periodic or paroxysmal leakage. Mechanical seal of the rotor components of the periodic oscillation, axial movement is too large, will form a leak. Mechanical seal of the sealing surface to have a certain pressure, so the ability to play a sealed role, which requires the mechanical seal of the torsion spring to have a certain amount of compression, to the sealing end of a thrust, rotating up to seal the sealing request More pressure. In order to ensure that this one pressure, mechanical seal request pump shaft can not have too much channeling, usually to ensure that within 0.25mm. But in the practice planning side, because the planning is unreasonable, usually pump shaft occurs a lot of channeling, the use of mechanical seals is very bad luck. Mechanical seal of the regular leakage. There are many aspects of the mechanical seal often leaks. Top of the list, because the shortcomings of the seal end of the regular leakage caused. The second aspect is the auxiliary seal caused by the frequent leakage. The third aspect is the fault caused by the shortcomings of tension. In other respects, it also contains leakage, transmission, tightening and thrust parts caused by rotor oscillation, resulting in poor quality or loosening of the parts, mechanical leaks caused by the organization of the mechanical seal. Mechanical seal oscillation is too large. Mechanical seal oscillation is too large, eventually resulting in the loss of sealing effect. But the mechanical seal is too large elements of the mechanical seal itself is not only the elements of the pump, the other parts of the pump is also the origin of vibration, such as pumping shaft planning is unreasonable, the processing of elements, bearing accuracy can not, the parallelism of the coupling Poor, radial force and other elements.

Ways to deal with the adoption of the problem

If the mechanical seal parts are defective, you need to replace parts or progressive parts of the machining accuracy, improve the mechanical seal their own processing accuracy and the processing of other parts of the pump body parts of the mechanical seal is very beneficial. In order to improve the sealing effect, the dynamic ring of the conflict surface of the brightness and unevenness of the request is higher. The width of the conflicting surface of the dynamic ring is not large, usually between 2 and 7 mm.
Mechanical seal oscillation, heat treatment
If the gap between the dynamic ring and the sealed cavity is too small, it is necessary to increase the inner diameter of the seal chamber or reduce the rolling outer diameter, at least 0.75mm to ensure the gap. If the conflict is not correct pairing, it is necessary to change the dynamic ring material, so that temperature, corrosion resistance. This will cut the mechanical seal of the oscillation and heat.
Mechanical seal leakage treatment
Mechanical seal leak is due to a variety of factors, we have to ask in detail detailed treatment. In order to reduce the amount of leakage, the mechanical seal must be strictly in accordance with the technical requirements of the device, together with the following matters.
(1) device to clean and bright. Mechanical seal parts, tools, smooth oil, wipe the mechanical seal material to be very clean. The seal end face of the dynamic ring is wiped with a soft gauze. (2) trim chamfering round. Shaft, sealed cover and other chamfers to be trimmed smooth, the shaft and the cover of the fillet to sand polish. (3) device auxiliary seal ring, the rubber auxiliary seal cannot use gasoline, kerosene soaking scrub, to avoid swelling deformation, premature aging. Dynamic ring assembly, the hand press the compensation ring, check is not in place, is not sensitive; elastic ring is not positioning solid. After moving the ring device, it is necessary to ensure that it is sensitive to axial movement on the shaft.
Pump shaft channeling large processing
Reasonable planning of the axial force of the balance of equipment, to eliminate the axial channeling. In order to satisfy this request, on the multi-stage centrifugal pump, the planning scheme is: the balance plate and the axial thrust bearing, the axial force is balanced by the balance plate, and the axial limit is restricted by the axial thrust bearing.
Add auxiliary washing system
Sealed chamber sealed medium rich in particles, impurities, it is necessary to scour, or because of the crystallization of the separation, particles, impurities in the accumulation of mechanical seal of the tension spring failure, if the particles into the conflict, will lead to mechanical seal of the agile damage. Therefore, the mechanical seal of the auxiliary scouring system is very important, it can effectively maintain the sealing surface, play a cooling, smooth, washed away debris and so on.
Pump oscillation method
In the process of production of pump products, in strict accordance with the norms and procedures to perform, to eliminate the source of oscillation. Pump, motor, base, field piping and other auxiliary equipment in the field device, to strict checks to eliminate the source of oscillation.

Hangzhou Sealcon Fluid Machinery Co., Ltd is a professional china mechanical seal manufacturers, we provide quality mechanical seals, rotating mechanical seal and etc. Want to know more? Contact us now.

Mechanical Seal Material(2021年08月26日)

chinasealcon — 2021-08-26T16:20:34+0900

https://www.china-sealcon.com/sealcon-service/mechanical-seal-material.html

But the environment is different and the mechanical seal material selection is different. When we choose mechanical seal, we should take care of the consistency of material selection and take care of the difference of environmental corrosion; the temperature, concentration and pressure are different. The material is different from the material; the same medium temperature, concentration and pressure are different, the corrosion is different. Different, the selection is different.

Hangzhou Sealcon Fluid Machinery Co., Ltd is a professional cartridge seal suppliers, we provide coke valve, dry coke and etc. Want to know more? Contact us now.

Difference between Single and Double Mechanical Seal(2021年08月26日)

chinasealcon — 2021-08-26T16:20:03+0900

https://www.china-sealcon.com/sealcon-service/difference-between-single-and-double-mechanical-se.html

Difference between Single and Double Mechanical Seal

The basic types of mechanical seals for pumps are classified as single mechanical seal, double mechanical seals and series mechanical seals. The single end face mechanical seal consists of a pair of sealing ends; The double mechanical seal consists of two sealing ends. The mechanical seals made up of two or two sets of mechanical seals with E single direction mechanical seals are series mechanical seals. The following two main types of mechanical seals are mainly described to understand the difference between single and double mechanical seals.

Single mechanical seal pump
The single mechanical seal has the advantages of simple structure, low manufacturing cost, convenient installation and operation, and is generally used for oil, water, organic solvents and corrosive medium. There are vertical single stage pipeline centrifugal pumps and horizontal centrifugal pumps which use single side seal pumps.

Double mechanical seal pump
Double mechanical seals are mostly used in flammable, explosive, toxic, granular and lubricating medium. When it is used, it needs a sealing auxiliary system, that is, the isolation fluid is inserted in the sealing cavity between the two ends, thereby improving the lubrication and cooling conditions of the mechanical seal. The pump products that use double mechanical seal are: fluorine plastic centrifugal pump or IH stainless steel chemical pump, etc.

Parts and corresponding terms of mechanical seals with single face and double faces
Gasket ring: In mechanical seals, the two ring parts whose ends are perpendicular to the axis of rotation and are relatively slipping are called seal rings.
seal face: The seal face refers to the end surface of the sealing ring which is attached to the other sealing ring at work. The face is usually ground.
Rotating ring (moving ring) : A seal ring for rotating with the shaft.
Stationary ring (static ring) : A seal ring that does not rotate with the shaft.
Compensation ring: Asealing ring with axial compensation capability.
Non - compensation ring: A sealing ring without axial compensation.
Compensation ring component: A part of an axial connection and positioning of an elastic element.
Retainer: That is used to fasten and directly drive a rotating ring with a shaft or sleeve.
Drive screw: Screw used to transfer torque.
Fastening screw: Screw used to fasten a spring seat, drive seat, or other part to a shaft or sleeve.
Clasp: Parts with axial limiting function on the compensation ring.
Reseller: a pin used to prevent the relative rotation of two adjacent parts.
Seal chamber: The annular space between the rotating shaft of the sealing part and the stationary shell.
Sealed chamber: The static shell of the containment chamber;
Elastic components: elastic parts, such as springs or bellows.
Friction couple: a set of sealing rings used for mating.

Hangzhou Sealcon Fluid Machinery Co., Ltd is a professional china mechanical seal manufacturers, we provide high quality mechanical seal, single vs double mechanical seal, single mechanical seal vs double mechanical seal , double mechanical seal centrifugal pump, double mechanical seal parts, double mechanical seal working and etc. Want to know more? Contact us now.

Coke Dry Quenching Rotary Seal Valve(2021年08月26日)

chinasealcon — 2021-08-26T16:19:32+0900

https://www.china-sealcon.com/sealcon-service/coke-dry-quenching-rotary-seal-valve.html

The structure and principle of the coke dry rotary quenching seal valve:

coke dry rotary quenching seal valve (also called rotary discharge valve, format seal valve) is installed at the bottom of the dry quenching furnace. The feeding port is connected with the vibrating feeder, and the discharge port is connected with the coke exhausting sluice.

Hangzhou Sealcon Fluid Machinery Co., Ltd is a professional top mechanical seal manufacturers, we provide coke valve, dry coke and etc. Want to know more? Contact us now.

Analysis And Maintenance Scheme Of Leakage Point Of Mechanical Seal For Pump(2021年08月26日)

chinasealcon — 2021-08-26T16:19:01+0900

https://www.china-sealcon.com/sealcon-service/analysis-and-maintenance-scheme-of-leakage-point-of-mechanical-seal-for-pump.html

Analysis and judgment of leakage
Installation of static test leak. Mechanical seal installation and commissioning, the general to conduct a static test, observe the leakage. Such as the leakage of small, mostly dynamic ring or static ring ring there is a problem; leakage is large, then the dynamic and static ring friction between the existence of problems. In the initial observation of leakage, to determine the basis of the leak, and then manually observe the car, if there is no significant changes in the leakage of static and dynamic ring seal problems; such as the amount of leakage when the car can be determined to be significant changes, Static ring friction side of the problem; such as leakage media along the axial injection, the dynamic ring there are many problems, the leakage medium to the surrounding jet or leak from the water cooling hole, then the static ring failure. In addition, the leakage channel can also exist, but generally there are prim

We are one of the leading expert mechanical seal suppliers from China. If you still have other questions or have interests on our mechanical seal price, please feel free to contact us.

Hangzhou Sealcon Fluid Machinery Co., Ltd is a professional china mechanical seal manufacturers, we provide quality mechanical seals, mechanical seal static test and etc. Want to know more? Contact us now.

The Processing of Teflon Bellows(2021年08月26日)

chinasealcon — 2021-08-26T16:18:18+0900

https://www.china-sealcon.com/the-processing-of-teflon-bellows.html

Bellows is a corrugated tube shaped elastic part which can be used in the component of the mechanical seal compensation ring, which can be expanded under the external force or self elastic force and compensates the auxiliary seal of the ring. The bellows type mechanical seal has no relative sliding on the shaft, no abrasion on the shaft, and good follow-up, and is widely applied to the pump products, like water pump seals . HTB series anti-corrosion engineering plastic pumps are widely used in petrochemical, mining, chemical and pharmaceutical industries, and are used to transport toxic and harmful chemical media including acid, alkali, pulp and sewage. Therefore, it has special requirements for its anti-corrosion, high wear resistance and anti-leakage. The mechanical seal of this series of pumps is made of polytetrafluoroethylene bellows. Teflon bellows require high precision, low elastic modulus of material, easy deformation of corrugated structure and difficult turning. In view of the material and structural characteristics of bellows, a practical and reliable technology and manufacturing method for corrugated pipe turning is put forward.

Hangzhou Sealcon Fluid Machinery Co., Ltd is a professional china mechanical seal manufacturers, we provide sealcon china, high quality mechanical seal and etc. Want to know more? Contact us now.

Application of Main Shaft Seal in Water Turbine(2021年08月26日)

chinasealcon — 2021-08-26T16:17:51+0900

https://www.china-sealcon.com/application-of-main-shaft-seal-in-water-turbine.html

In recent years, our country's economy continues to develop steadily, and at the same time, the demand for power supply is increasing continuously, and now the main channel of power production is the hydropower plant, so the hydropower plant is now closely connected with the people's life. Water turbine is an important part of hydropower plants. And as for water turbine, the main shaft seal is its indispensable component. But the main shaft seal is easy to fail, and its safety cannot be guaranteed, so it is a problem to be solved urgently in the current domestic hydropower industry. At present, the water turbines usually operate in high pressure and high-speed environment, which causes great pressure on the pump seals . The pump sealing parts of the turbine are easily worn by the sediment in the water, and the leakage often occurs, which makes the working efficiency of the water turbine decline rapidly and its reliability is also reduced, so regular sealing part replacement is needed. In view of this situation, the main shaft seal of the water turbine is invented, and it replaces the traditional sealing components of the water turbine, it can make the water turbine operate properly and improve the working efficiency and working quality of the water turbine.

At present, there are two main classifications of hydro turbine shaft seal:
(1) according to the nature of work, it can be divided into maintenance seal and working seal. There are many categories in the working seal, according to the seal structure, working seal can be divided into flat seal, disk seal, end seal, etc.;
(2) according to the structural division of water turbine main shaft seal, it can be divided into contact seal and non-contact seal. The non-contact seal includes reverse spiral seal and centrifugal seal.

Hangzhou Sealcon Fluid Machinery Co., Ltd is a professional china mechanical seal manufacturers, we provide sealcon china, high quality mechanical seal and etc. Want to know more? Contact us now.

Mechanical Seal On The Use Of Rotating Equipment(2020年11月11日)

chinasealcon — 2020-11-05T12:31:45+0900

https://www.china-sealcon.com/sealcon-service/mechanical-seal-on-the-use-of-rotating-equipment.html

Mechanical Seal On The Use Of rotating mechanical seal
Mechanical seal of the symptoms and elements
Mechanical seal parts of the rotation equipment in the running side, sealed face often show wear, hot cracking, deformation, damage and other conditions, tension with a long time will be loose, cracking and corrosion. Auxiliary seal will also show cracks, distortion and deformation, break and other conditions.
Mechanical seal oscillation, fever problems elements.During the rotation of the device, the dynamic ring conforms to the rough face, and the gap between the dynamic ring and the seal cavity is too small, because the vibration causes the bump to cause oscillation. Sometimes due to sealing the end of the corrosion resistance and poor temperature function, or lack of cooling or face in the device when the folder with particles of impurities, will also cause the mechanical seal of the oscillation and heat.
Mechanical seal media leakage of the elements of the problem

Ways to deal with the adoption of the problem

If the mechanical seal parts are defective, you need to replace parts or progressive parts of the machining accuracy, improve the mechanical seal their own processing accuracy and the processing of other parts of the pump body parts of the mechanical seal is very beneficial. In order to improve the sealing effect, the dynamic ring of the conflict surface of the brightness and unevenness of the request is higher. The width of the conflicting surface of the dynamic ring is not large, usually between 2 and 7 mm.
Mechanical seal oscillation, heat treatment
If the gap between the dynamic ring and the sealed cavity is too small, it is necessary to increase the inner diameter of the seal chamber or reduce the rolling outer diameter, at least 0.75mm to ensure the gap. If the conflict is not correct pairing, it is necessary to change the dynamic ring material, so that temperature, corrosion resistance. This will cut the mechanical seal of the oscillation and heat.
Mechanical seal leakage treatment
Mechanical seal leak is due to a variety of factors, we have to ask in detail detailed treatment. In order to reduce the amount of leakage, the mechanical seal must be strictly in accordance with the technical requirements of the device, together with the following matters.
(1) device to clean and bright. Mechanical seal parts, tools, smooth oil, wipe the material to be very clean. The seal end face of the dynamic ring is wiped with a soft gauze. (2) trim chamfering round. Shaft, sealed cover and other chamfers to be trimmed smooth, the shaft and the cover of the fillet to sand polish. (3) device auxiliary seal ring, the rubber auxiliary seal cannot use gasoline, kerosene soaking scrub, to avoid swelling deformation, premature aging. Dynamic ring assembly, the hand press the compensation ring, check is not in place, is not sensitive; elastic ring is not positioning solid. After moving the ring device, it is necessary to ensure that it is sensitive to axial movement on the shaft.
Pump shaft channeling large processing
Reasonable planning of the axial force of the balance of equipment, to eliminate the axial channeling. In order to satisfy this request, on the multi-stage centrifugal pump, the planning scheme is: the balance plate and the axial thrust bearing, the axial force is balanced by the balance plate, and the axial limit is restricted by the axial thrust bearing.
Add auxiliary washing system
Sealed chamber sealed medium rich in particles, impurities, it is necessary to scour, or because of the crystallization of the separation, particles, impurities in the accumulation of mechanical seal of the tension spring failure, if the particles into the conflict, will lead to mechanical seal of the agile damage. Therefore, the mechanical seal of the auxiliary scouring system is very important, it can effectively maintain the sealing surface, play a cooling, smooth, washed away debris and so on.
Pump oscillation method
In the process of production of pump products, in strict accordance with the norms and procedures to perform, to eliminate the source of oscillation. Pump, motor, base, field piping and other auxiliary equipment in the field device, to strict checks to eliminate the source of oscillation.

Mechanical Seal Material(2020年11月10日)

chinasealcon — 2020-11-05T12:30:43+0900

https://www.china-sealcon.com/sealcon-service/mechanical-seal-material.html

Mechanical seal material selection is a complex problem. In general, it should be selected according to the properties of the working medium, pressure, temperature and rotation speed, and the ability to withstand short time friction when the pair is started or the liquid film is destroyed. Taking into account the above factors, the material of the friction pair should have the following conditions:

(1). High mechanical strength, resistance to pressure and deformation;
(2). It has good dry abrasion resistance, high load resistance and good self lubrication.
(3). The matching material has good running in property without excessive wear and dual corrosion.
(4). Good wear resistance, long life;
(5). Good thermal conductivity and good heat dissipation;
(6). High temperature resistance;
(7). Good thermal cracking resistance;
(8). Strong corrosion resistance;
(9). The linear expansion coefficient is small, and it can resist heat distortion and dimensional stability.
(10). Good machinability and good molding performance.
(11). Good air tightness;
(12). The density is small.
But the environment is different and the selection of material is different. When we choose mechanical seal, we should take care of the consistency of material selection and take care of the difference of environmental corrosion; the temperature, concentration and pressure are different. The material is different from the material; the same medium temperature, concentration and pressure are different, the corrosion is different. Different, the selection is different.
Sealcon as China agitator in Mechanical Seals,want to know more?Contact with us.RFQ today.
In March 2017, Hangzhou Sealcon Fluid Machinery Co., Ltd. set up a new office in xihu district,Hangzhou.And the company's factory is still in Jiande,Hangzhou.

Difference between Single and Double Mechanical Seal(2020年11月09日)

chinasealcon — 2020-11-05T12:29:59+0900

https://www.china-sealcon.com/sealcon-service/difference-between-single-and-double-mechanical-se.html

Difference between single and double mechanical seal
The basic types of mechanical seals for pumps are classified as double mechanical seal vs single mechanical seal and series mechanical seals. The single end face mechanical seal consists of a pair of sealing ends; The double mechanical seal consists of two sealing ends. The mechanical seals made up of two or two sets of mechanical seals with E single direction mechanical seals are series mechanical seals. The following two main types of mechanical seals are mainly described to understand the difference between single and double mechanical seals.

Single mechanical seal
The single mechanical seal has the advantages of simple structure, low manufacturing cost, convenient installation and operation, and is generally used for oil, water, organic solvents and corrosive medium. There are vertical single stage pipeline centrifugal pumps and horizontal centrifugal pumps which use single side seal pumps.

Double mechanical seal centrifugal pump
Double mechanical seals are mostly used in flammable, explosive, toxic, granular and lubricating medium. When it is used, it needs a sealing auxiliary system, that is, the isolation fluid is inserted in the sealing cavity between the two ends, thereby improving the lubrication and cooling conditions of the mechanical seal. The pump products that use double mechanical seal are: fluorine plastic centrifugal pump or IH stainless steel chemical pump, etc.

Double mechanical seal part sand corresponding terms of mechanical seals with single face and double faces
Gasket ring: In mechanical seals, the two ring parts whose ends are perpendicular to the axis of rotation and are relatively slipping are called seal rings.
seal face: The seal face refers to the end surface of the sealing ring which is attached to the double mechanical seal working. The face is usually ground.
Rotating ring (moving ring) : A seal ring for rotating with the shaft.
Stationary ring (static ring) : A seal ring that does not rotate with the shaft.
Compensation ring: Asealing ring with axial compensation capability.
Non - compensation ring: A sealing ring without axial compensation.
Compensation ring component: A part of an axial connection and positioning of an elastic element.
Retainer: That is used to fasten and directly drive a rotating ring with a shaft or sleeve.
Drive screw: Screw used to transfer torque.
Fastening screw: Screw used to fasten a spring seat, drive seat, or other part to a shaft or sleeve.
Clasp: Parts with axial limiting function on the compensation ring.
Reseller: a pin used to prevent the relative rotation of two adjacent parts.
Seal chamber: The annular space between the rotating shaft of the sealing part and the stationary shell.
Sealed chamber: The static shell of the containment chamber;
Elastic components: elastic parts, such as springs or bellows.
Friction couple: a set of sealing rings used for mating.
Sealcon as an professional China pump supplier, provide different types of Mechanical Seals for Pumps.RFQ today.

Coke Dry Quenching Rotary Seal Valve(2020年11月08日)

chinasealcon — 2020-11-05T12:29:04+0900

https://www.china-sealcon.com/sealcon-service/coke-dry-quenching-rotary-seal-valve.html

The structure and principle of the coke dry rotary quenching seal valve:

Dry coke (also called rotary discharge valve, format seal valve) is installed at coke valve. The feeding port is connected with the vibrating feeder, and the discharge port is connected with the coke exhausting sluice.

The rotary seal valve rotates normally when it is in normal production, but when dealing with the accident, there is a forward and reverse rotating button on the field operation plate. The rotary seal valve has three operation modes: manual operation on site, central control room operation and PLC interconnected operation in central control room.
Sealcon as an professional supplier,mechanical seal cover is their mainly product,want to know more ?Contact with us.RFQ today.
In March 2017, Hangzhou Sealcon Fluid Machinery Co., Ltd. set up a new office in xihu district,Hangzhou.And the company's factory is still in Jiande,Hangzhou.

Analysis And Maintenance Scheme Of Leakage Point Of Mechanical Seal For Pum(2020年11月07日)

chinasealcon — 2020-11-05T12:28:06+0900

https://www.china-sealcon.com/sealcon-service/analysis-and-maintenance-scheme-of-leakage-point-of-mechanical-seal-for-pump.html

Analysis and judgment of leakage

Installation of static test leak. mechanical seal static test, the general to conduct a static test, observe the leakage. Such as the leakage of small, mostly dynamic ring or static ring ring there is a problem; leakage is large, then the dynamic and static ring friction between the existence of problems. In the initial observation of leakage, to determine the basis of the leak, and then manually observe the car, if there is no significant changes in the leakage of static and dynamic ring seal problems; such as the amount of leakage when the car can be determined to be significant changes, Static ring friction side of the problem; such as leakage media along the axial injection, the dynamic ring there are many problems, the leakage medium to the surrounding jet or leak from the water cooling hole, then the static ring failure. In addition, the leakage channel can also exist, but generally there are prim

The Processing of Teflon Bellows(2020年11月06日)

chinasealcon — 2020-11-05T12:26:51+0900

https://www.china-sealcon.com/the-processing-of-teflon-bellows.html

Bellows is a corrugated tube shaped elastic part which can be used in the component of the mechanical seal compensation ring, which can be expanded under the external force or self elastic force and compensates the auxiliary seal of the ring. The bellows type mechanical seal has no relative sliding on the shaft, no abrasion on the shaft, and good follow-up, and is widely applied to the pump products, like water pump seals . HTB series anti-corrosion engineering plastic pumps are widely used in petrochemical, mining, chemical and pharmaceutical industries, and are used to transport toxic and harmful chemical media including acid, alkali, pulp and sewage. Therefore, it has special requirements for its anti-corrosion, high wear resistance and anti-leakage. The mechanical seal of this series of pumps is made of polytetrafluoroethylene bellows.Teflon bellows require high precision, low elastic modulus of material, easy deformation of corrugated structure and difficult turning. In view of the material and structural characteristics of bellows, a practical and reliable technology and manufacturing method for corrugated pipe turning is put forward.

Application of Main Shaft Seal in Water Turbine(2020年11月05日)

chinasealcon — 2020-11-05T12:26:08+0900

https://www.china-sealcon.com/application-of-main-shaft-seal-in-water-turbine.html

In recent years, our country's economy continues to develop steadily, and at the same time, the demand for power supply is increasing continuously, and now the main channel of power production is the hydropower plant, so the hydropower plant is now closely connected with the people's life. Water turbine is an important part of hydropower plants. And as for water turbine, the main shaft seal is its indispensable component. But the main shaft seal is easy to fail, and its safety cannot be guaranteed, so it is a problem to be solved urgently in the current domestic hydropower industry. At present, the water turbines usually operate in high pressure and high-speed environment, which causes great pressure on the pump seals . The pump sealing parts of the turbine are easily worn by the sediment in the water, and the leakage often occurs, which makes the working efficiency of the water turbine decline rapidly and its reliability is also reduced, so regular sealing part replacement is needed. In view of this situation, the main shaft seal of the water turbine is invented, and it replaces the traditional sealing components of the water turbine, it can make the water turbine operate properly and improve the working efficiency and working quality of the water turbine.