Submersible pump is an important equipment for water extraction in deep wells. When in use, the whole unit works in the water. Extracting groundwater to the surface is domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting and ship load regulation. It can also be used for fountain landscape, hot water submersible pump for hot spring bathing, extracting groundwater from deep wells, and water lifting projects such as rivers, reservoirs and canals. It is mainly used for farmland irrigation and human and livestock water in alpine areas. It can also be used for central air conditioning cooling, heat pump unit, cold pump unit, city, factory, railway, mine and construction site drainage. The general flow can reach (5M3 ~ 650m3) per hour and the lift can reach 10-550m.

Before starting the pump, the suction pipe and pump must be filled with liquid. After starting the pump, the impeller rotates at high speed, and the liquid in it rotates with the blades. Under the action of centrifugal force, it flies away from the impeller and shoots out. The speed of the emitted liquid in the diffusion chamber of the pump shell gradually slows down, the pressure gradually increases, and then flows out of the pump outlet and discharge pipe. At this time, at the center of the blade, a vacuum low-pressure area without air and liquid is formed because the liquid is thrown around. Under the action of atmospheric pressure on the pool surface, the liquid in the liquid pool flows into the pump through the suction pipe. In this way, the liquid is continuously pumped up from the liquid pool and continuously flows out of the discharge pipe