Impeller liquid pump is usually centrifugal impeller, the typical structure is vertical centrifugal pump structure, its working principle with the same centrifugal pump, the following brief introduction is as follows. Submerged pump mainly by the impeller, shaft, pump housing, shaft seal and seal ring and other components (Figure 7-1). When the prime mover drives the pump shaft and the impeller to rotate, the liquid, on the one hand, makes circular motion with the impeller on the one hand and is thrown out from the center of the impeller to the outer periphery under the centrifugal force on the one hand. Hydrostatic pressure and hydrodynamic pressure were obtained from the leaves. When the liquid flows through the volute to the discharge port, some dynamic pressure can be converted into static pressure energy. When the liquid is thrown from the impeller, the central portion of the impeller causes a low-pressure region, which forms a pressure difference with the pressure of the suction liquid, so that the liquid is continuously sucked and discharged with a certain pressure. For ordinary submersible pumps, the shaft seal is filled with or without sealing requirements; when the medium is conveyed containing gas or its vaporization, the sealing requirements are relatively stringent; when the transport of molten salt at high temperature, this submerged pump is Molten salt under the pump, then seal to take into account the special requirements of high temperature. Zeus pump related articles Read: The performance characteristics of concrete pump Six kinds of common mortar pump learning Slurry pump six major structural instructions and precautions