Drainage pump working principle _ drainage pump working principle of interpretation

How does a drainage pump work? What is the working principle of a drainage pump? As we all know, the drainage pump is used to drain the liquid in the sump or large storage tank. However, many consumers do not have a clear understanding of the working principle of the drainage pump. In order to make better use of drainage pump products, Xiaobian introduces the working principle of the drainage pump. Drainage pump works Drainage pump works Drainage pump works Drainage pump works: rely on high-speed rotation of the impeller, the liquid in the inertial centrifugal force obtained energy to improve the pressure. Pump before work, the pump body and inlet must be full of water to prevent cavitation. When the impeller rotates rapidly, the blades cause the water to rotate rapidly. The rotating water flies from the impeller under the centrifugal force. After the water in the pump is thrown out, the central part of the impeller forms a vacuum area. The water from the water source is pumped into the inlet pipe through the pipework under the action of atmospheric pressure (or water pressure). This endless cycle, you can achieve continuous pumping. It is worth mentioning that: before starting the pump must be filled with water to the pump casing before starting, otherwise it will cause the pump body heat, vibration, reduce the amount of water, causing damage to the pump (referred to as "cavitation") Cause equipment accident! The so-called cavitation refers to: Centrifugal pump start, if there is air in the pump, due to the low density of air, centrifugal force generated after rotation is small, so the low pressure in the center of the impeller is insufficient to the liquid level Lower than the pump inlet liquid suction pump, can not transport fluid phenomenon. Drainage pumps are basically multistage pumps, such as the Qinshan Power Plant backwash pump, he is also a drainage pump, run this pump must be manually before the plate a few times to prevent the run-time out of the rubber bearings inside, there must be inside The air is discharged, until the shaft seal water filled before operation, otherwise, if there is no water rubber bearing will soon be burned. Above is a small series for you to introduce the working principle of the drainage pump, I hope for your help. (Editor: Li Juan QQ:) Recommended reading: Acting procurement