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Working Principle Of Drainage Pump
Aug 27, 2018

Centrifugal Pump working principle is: rely on high-speed rotating impeller, liquid in the inertia of centrifugal force to obtain the energy to increase the pressure. Before the pump is working, the pump body and the inlet pipe must be filled with water to prevent the cavitation phenomenon from occurring.

When the impeller is rotating rapidly, the blade urges Water quickly rotating, rotating water in the centrifugal force from the impeller to fly away, the pump water is thrown, the center part of the impeller formed a vacuum zone. The water in the water is pressed into the inlet tube through the pipe network under the action of atmospheric pressure (or pressure). This cycle is endless, you can achieve continuous pumping. Here is worth mentioning is: centrifugal pump before starting must be full of water to the pump shell, before starting, otherwise it will cause the pump body fever, vibration, water loss, damage to the pump ("cavitation") caused by equipment accidents! The so-called cavitation is: when the centrifugal pump starts, if there is air in the pump, because the density of the air is very low,

After rotation, the centrifugal force is very small, so the formation of the center of the impeller low-pressure is not enough to the liquid level below the pump inlet liquid suction pump, can not transport fluid phenomenon. Drainage pumps are basically multistage pumps, such as Qinshan power Plant backwashing Pump, he is also a drainage pump, run this pump must first hand a few laps, to prevent the running out of the rubber bearings inside, there must be the inside of the air to put the end of the shaft seal water can run, or in case there is no water rubber bearings will soon be burned off.


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