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Working Principle of Pump

Views: 0     Author: Site Editor     Publish Time: 2019-08-06      Origin: Site


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The impeller is installed in the pump housing and fastened on the pump shaft, which is directly driven by the motor. There is a liquid pipette in the center of the pump housing. The liquid enters the pump through bottom valve and suction pipe. The liquid outlet on the pump housing is connected with the discharge pipe.

Before starting the pump, the pump shell is filled with the transported liquid; after starting, the impeller is driven by the shaft to rotate at high speed, and the liquid between the blades must also rotate with it. Under the action of centrifugal force, the liquid is thrown from the center of impeller to the outer edge of impeller to obtain energy, leaving the outer edge of impeller to enter the volute pump shell at high speed. In the volute, the liquid decelerates due to the gradual enlargement of the flow passage, and converts part of kinetic energy into static pressure energy. Finally, it flows into the discharge pipeline at a higher pressure and sends it to the place where it is needed. When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the impeller. Because the pressure above the liquid surface of the tank is greater than that at the inlet of the pump, the liquid is continuously pressed into the impeller. It can be seen that as long as the impeller keeps rotating, the liquid will be continuously absorbed and discharged.


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