年表作成・共有サービス - pastport

The self-priming height of the self-priming pump is related to factors such as the sealing gap in front of the impeller, the number of revolutions of the pump, and the height of the liquid level in the separation chamber. The smaller the sealing gap in front of the impeller, the greater the self-priming height, which is generally taken as 0.3~0.5 mm; when the gap increases, in addition to the decrease of the self-priming height, the pump head and efficiency are reduced. The self-priming height of the pump increases with the increase of the peripheral speed u2 of the impeller, but when the maximum self-priming height is reached, the number of revolutions increases and the self-priming height does not increase any more. At this time, the self-priming time is only shortened; When descending, the self-priming height decreases with it. Under the condition that other conditions remain unchanged, the self-priming height also increases with the increase of the water storage height (but cannot exceed the optimal water storage height of the separation chamber). In order to better mix the gas and water in the self-priming pump, the blades of the impeller must be less, so that the pitch of the blade cascade increases; It is convenient for the return water to be injected deeply into the impeller cascade.

China Self Priming Pump,Self Priming Oil Pump manufacturer, choose the high quality Self Priming Diesel Transfer Pump,Self Priming Oil Transfer Pump, etc.

application

https://www.pumpqt.com/self-priming-pump/