Submersible pump is a kind of equipment specially used to extract water from deep underground. During use, the whole equipment sinks into the water to work, and then extracts the underground water to the surface. Submersible pumps are widely used. They are used for hot spring bathing, and can also be used to extract groundwater from deep wells. They can also be used for water extraction projects such as rivers, reservoirs, and canals. They are mainly used for farmland irrigation and water for people and livestock in high mountain areas. They can also be used for central air conditioning cooling, heat pump units, cold pump units, cities, factories, railways, mines, and construction site drainage.
Depending on the needs, submersible pumps are also classified in many ways, including deep well submersible pumps, submersible sewage pumps, submersible axial flow pumps, large submersible electric pumps, hot water submersible pumps, stainless steel submersible pumps, submersible spiral centrifugal pumps, etc. Some submersible pumps can only pump clear water, and cannot contain debris, or the debris particles are very small, such as deep well submersible pumps, hot water submersible pumps, etc. Some submersible pumps can pump muddy water, rainwater, etc., such as submersible sewage pumps, but the requirements for the size of particles are relatively strict, and they cannot be pumped if they are too large. Because of its unique structural characteristics, the submersible spiral centrifugal pump can pump larger materials, such as live fish, potatoes, apples, etc.
Working principle of submersible pump
There are several types of submersible pumps, and the coils in the motor are oil-immersed, water-immersed, and dry.
Before turning on the pump, the suction pipe and the pump must be filled with liquid. After the pump is turned on, the impeller rotates at high speed, and the liquid in it rotates with the blades. Under the action of centrifugation, it flies away from the impeller and ejects outward. The ejected liquid gradually slows down in the diffusion chamber of the pump casing, and the pressure gradually increases, and then flows out from the pump outlet and the discharge pipe. At this time, at the center of the blade, a vacuum low-pressure area with neither air nor liquid is formed because the liquid is thrown to the surroundings. The liquid in the liquid pool flows into the pump through the suction pipe under the action of the atmospheric pressure on the pool surface. The liquid is continuously sucked up from the liquid pool and continuously flows out from the discharge pipe.