Pump industry suppliers to tell you: self-priming pump working principle and main structure

self-priming pump working principle and main structure

to know self-priming water pump working principle, the first thing to know the main structure and structure of self-priming pump, is the only way to understand how he was running.

the mixed type self-priming pump suction is usually located at the top of the impeller, the advantage is, at the end of the self-priming pump operation, automatically leave some water in the pump body, the water can be produced in vacuum self-priming pump start-up, used for the first time, of course, is to add water. When self-priming pump starting rotating impeller, makes the water rapidly flow in the centrifugal force effect on the edge of the impeller, with gas mixture, and form a uniform of the gas bubble water.

self-priming pump by the pump body, pump cover, impeller, shaft, bearing and other parts. Of course the different design, different companies parts may be different. But self-priming pump working principle is roughly the same. By physical means of centrifugal, produce pressure difference, both within and outside pump pump suck up the water. Self-priming pump pump body usually has a vortex flow, the flow around the outer space volume larger gas water separation.

at this moment, because the area of water increases rapidly, results in the decrease of flow velocity rapidly, at the same time, the relative density of the gas in the pump body is small, escape from the water and the pump outlet line, due to large relative density of water, to fall to the bottom of the gas water separation chamber, and the axial reflux hole to return to the impeller outer edge and mixed with the gas again.

although various self-priming pump working principle is the same, but different pump body acquire the method of centrifugal force, the centrifugal pump can be divided into: the mixed type self-priming pump, mixed type self-priming pump and vacuum auxiliary self-priming pump, etc. Let me in the most common outer recirculation self-priming pump as an example, to explain in detail the working principle of self-priming pump for you.

infinite loop through the above process, forming a vacuum suction tube, so water will be self-priming pump suction out continuously, to be completely filled with water in the water pump, when the pump body is fully filled, self-priming pump has entered the working state, namely the process of imbibition.

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