Internal recycling self-balancing multi-stage centrifugal water pump

Abstract

The invention provides an internal recycling self-balancing multi-stage centrifugal water pump, relating to the technical field of pump valve equipment. The internal recycling self-balancing multi-stage centrifugal water pump is formed by a pump body, a center shaft and bearing bodies. The pump body is divided into a water in section, a middle section and a water out section. The center shaft goes through the center of the pump body. The front and back ends of the pump body are fixedly equipped with the bearing bodies. The pump body middle section is divided into a flow guide middle section, a liquid out middle section and a rear stage middle section. The flow guide middle section and the liquid out middle section are parallelly installed at the middle position of the pump body middle section. Hollow cavities which are in communication are arranged between the flow guide middle section and the liquid out middle section. The front part of the flow guide middle section is uniformly equipped with impellers which sleeve the center shaft. The outer sides of the impellers are equipped with guide vanes, and the back part of the flow guide middle section is also provided with impellers. The internal recycling self-balancing multi-stage centrifugal water pump has the advantages of novel and reasonable structural design, convenience in use, beautiful appearance, easy assembly and painting and no need of the external connection of a transition tube, the operation is convenient and fast, and the improvement of efficiency is facilitated.

Description

Technical field: [0001] The invention relates to the technical field of pump and valve equipment, in particular to an internal circulation self-balancing multistage centrifugal water pump. Background technique: [0002] Centrifugal pumps work by rotating the impeller to cause the water to move centrifugally. Before starting the pump, the pump casing and the suction pipe must be filled with water, and then the motor is started to drive the impeller and the water to rotate at a high speed. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller, and flows through the volute pump casing. The pressure water pipeline flowing into the water pump. Among them, centrifugal water pumps include vertical, horizontal, single-stage, multi-stage, single-suction, double-suction, self-priming and other forms. Among them, multi-stage centrifugal water pumps include two water flow operation modes: external circulation and internal circulation. There is an unfav...

AI Technical Summary

Problems solved by technology

Among them, centrifugal water pumps include vertical, horizontal, single-stage, multi-stage, single-suction, double-suction, self-priming and other forms. Among them, multi-stage centrifugal water pumps include two water flow operation modes: external circulation and internal circulation. There is an unfavorable shortcoming in the circulating self-balancing water pump. On the outer body of the external circulating self-balancing water pump, an external transition pipe is required to transfer the water flow. However, the external transition pipe is not a standard part, so the specifications and sizes are different during production, and each water pump The transition pipes are all welded after the water pumps are assembled, so that the water pumps and external pipes of different specifications and models cannot be used universally, so it will cause certain troubles to installation and production, and the technical solution to be provided by this patent is to provide a An internal circulation self-balancing multistage centrifugal water pump without external external pipes, which improves the efficiency of installation, production and use

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