Horizontal type multiple-stage centrifugal pump

Abstract

The invention relates to a horizontal type multiple-stage centrifugal pump. The centrifugal pump comprises a carbon-steel shaft, a cast iron impeller, a balance disc, a rolling bearing, a tensioning bolt and fillers. The two ends of the cast iron impeller are supported on the carbon-steel shaft. The balance disc is fixedly connected to the carbon-steel shaft through the tensioning bolt. The fillers are arranged at the two ends of the carbon-steel shaft. A rubber water deflector and an O-shaped rubber sealing ring are installed on the carbon-steel shaft. The cast iron impeller is provided with an impeller sealing ring, guide vane sleeves and other vulnerable parts to prevent abrasion to a middle piece and guide vanes. According to the horizontal type multiple-stage centrifugal pump, the structure is simple, operation is stable, and axial movement of a rotor is limited; the service life is long, the production cost is low, and abrasion to the balance disc and a balance ring is greatly reduced, so that the service life of the balance disc and the service life of the balance ring are prolonged, and the working efficiency of the centrifugal pump is improved.

Description

technical field [0001] The invention relates to a centrifugal pump, in particular to a horizontal multistage centrifugal pump. Background technique [0002] The rotor of the multi-stage clear water centrifugal pump needs to generate axial force when it is running, so that the rotor will move axially when it is running, which will easily cause mutual friction between the balance disc and the balance ring on the rotor of the centrifugal pump. If things go on like this, the balance disc will And the balance ring will be worn and damaged, which shortens the service life of the balance disc and balance ring, and also affects the normal operation of the centrifugal pump. Contents of the invention [0003] In order to solve the above problems, the present invention provides a horizontal multistage centrifugal pump with simple structure, stable operation, limited rotor axial movement, long service life and low production cost. [0004] The technical solution of the present invent...

AI Technical Summary

Problems solved by technology

[0002] The rotor of the multi-stage clear water centrifugal pump needs to generate axial force when it is running, so that the rotor will move axially when it is running, which will easily cause mutual friction between the balance disc and the balance ring on the rotor of the centrifugal pump. If things go on like this, the balance disc will And the balance ring will be worn and damaged, which shortens the service life of the balance disc and balance ring, and also affects the normal operation of the centrifugal pump

Images