Segment type multistage centrifugal pump

Abstract

The invention discloses a segment type multistage centrifugal pump. The segment type multistage centrifugal pump comprises a housing, the housing is composed of a discharge-end fixation frame, a suction-end fixation frame and an arc connecting block, one end of the discharge-end fixation frame is provided with the arc connecting block, the end, which is away from the discharge-end fixation frame, of the arc connecting block is provided with the suction-end fixation frame, the outer side of the arc connecting block is sleeved by a semicircular protective cover casing, one side of the discharge-end fixation frame is provided with a drain pipe, and one side of the suction-end fixation frame is provided with a suction pipe. According to the invention, a centrifugal pump body is prevented from being completely dismounted and maintained during maintenance, the installation dismounting speed of the centrifugal pump is improved, a rotating shaft and impellers of the centrifugal pump are arranged in a segment butt joint manner, during the maintenance, what is needed is only to take out damaged rotating shaft and impellers from the inside of the housing for replacement, the maintenance replacement efficiency of the centrifugal pump is improved, the dismounting quantity of parts inside the centrifugal pump is reduced, the installation precision is prevented from being reduced due to repeated dismounting of the parts inside the centrifugal pump, and the performance of the centrifugal pump is guaranteed.

Description

Technical field [0001] The invention relates to the technical field of centrifugal pumps, in particular to a segmented multistage centrifugal pump. Background technique [0002] Segmented multi-stage centrifugal pumps work in series by installing multiple impellers on a shaft. The number of impellers on the shaft represents the number of pump stages. The segmented multi-stage pump structure is generally divided into a suction section, a middle section (the number of the middle section is the number of impellers minus 1) and a discharge section. Each section is connected by a tightening bolt to form a whole. The suction ports of the segmented multi-stage centrifugal pump are arranged in the same direction. The liquid flows out from the impeller of the previous stage and then enters the inlet of the impeller of the next stage through the guide vanes, so that the energy is gradually increased, and finally flows out through the discharge section. Segmental multistage centrifugal pum...

AI Technical Summary

Problems solved by technology

Segmental multistage centrifugal pumps are used in industrial and agricultural liquid transportation, urban water supply and drainage, pressurized water supply for high-rise buildings, fire boosting, long-distance water supply and boiler feed water, etc. However, traditional segmental multistage centrifugal pumps are Due to the characteristics of the structure itself, it is necessary to disassemble the shaft and impeller of the pump body itself for maintenance and repair. This method requires the complete disassembly of the pump body. The whole process is troublesome and inconvenient, and it affects the installation accuracy of the internal parts of the centrifugal pump. A segmented multistage centrifugal pump is required for this purpose

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