潜水泵有好几种，电机里的线包有油侵式和水侵式还有是干式在使用前必须先看说明书，不能搞错，长期不用，必须在使用前还得把叶轮弄转，不然会因为长期不用卡死而烧包。
There are several kinds of submersible pumps. The wire wraps in the motors are oil-invaded and water-invaded, and the dry ones must read the instructions before they are used. They can't be mistaken. If they are not used for a long time, they must turn the impeller before they are used, or they will burn because they are not stuck for a long time.
开泵前，吸入管和泵内必须充满液体。
Before starting the pump, the suction pipe and the pump must be filled with liquid.
开泵后，叶轮高速旋转，其中的液体随着叶片一起旋转，在离心力的作用下，飞离叶轮向外射出，射出的液体在泵壳扩散室内速度逐渐变慢，压力逐渐增加，然后从泵出口，排出管流出。
After opening the pump, the impeller rotates at a high speed. The liquid in the impeller rotates with the blade. Under the action of centrifugal force, it flies out of the impeller. The velocity of the liquid in the diffusion chamber of the pump shell slows down gradually, and the pressure increases gradually. Then it flows out of the outlet of the pump and the discharge pipe.