The working principle of submersible pumps

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Submersible pumps are important equipment for pumping water from deep wells. In use, the entire unit dives underwater to pump groundwater to the surface; it can be used for domestic water supply, emergency rescue in mines, industrial cooling, farm irrigation, seawater lifting, ship ballasting, as well as in fountain landscapes. There are several types of submersible pumps. The windings in the motor can be of the oil-immersed, water-immersed, or dry type. It is necessary to read the instructions before use to avoid mistakes. If the pump is not used for an extended period, the impeller must be rotated before use; otherwise, it may get stuck due to lack of use and cause damage to the windings. Before starting the pump, the suction pipe and the pump itself must be filled with liquid. After the pump is started, the impeller rotates at high speed; the liquid inside rotates along with the blades. Under the effect of centrifugal force, the liquid is ejected outward from the impeller. As it moves through the diffusion chamber in the pump casing, its velocity gradually decreases while its pressure increases, before it finally flows out through the pump outlet and the discharge pipe. At this point, a vacuum low-pressure area devoid of both air and liquid is formed at the center of the blade as the liquid is flung outward. Under the effect of the atmospheric pressure at the surface of the liquid pool, the liquid flows into the pump through the suction pipe; in this way, the liquid is continuously drawn up from the pool and then continuously discharged through the outlet pipe. Zibo Boshan Yanshan Submersible Pump Factory is a dynamic and innovative technology-based enterprise that enjoys a certain reputation within the industry, holds a significant share in the market, and has earned the unanimous approval of its customers. It is a high-quality enterprise that values contracts and keeps its promises.