Vertical-type centrifugal pump

Abstract

The invention discloses a vertical centrifugal pump. The structural feature of the pump is that the motor 1 is connected to the pump body 8 through an independent motor bracket 12, so that the rotor does not bear and transmit the mass load and vibration of the motor; the motor shaft and the pump shaft pass through It is connected by flexible diaphragm coupling 14 with middle extension joint, and the rotor can be pulled out from the pump head by removing the extension joint in the middle of the coupling, which is convenient for maintenance; there are angular contact ball bearings 2, which support the pump shaft in the bearing body 13. The deep groove ball bearing 3, the angular contact ball bearing balances the axial force, and the deep groove ball bearing balances the radial force, which eliminates the defect that the axial force of the conventional pipeline pump is borne by the motor, and makes the pump run more smoothly; the impeller 10 rests on the impeller nut 7 The impeller is fixed on the tail end of the pump shaft, and the pump shaft, the impeller 10, the pump cover 6 and the bearing body 13 form a whole and are fixed on the pump body 8 to form a cantilever structure in which the rotor can be pulled out, which is convenient for maintenance.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering pumps, in particular to a vertical centrifugal pump. Background technique [0002] At present, the structure of the vertical pipeline pump used in my country does not have an independent motor support structure. The pump cover bracket is directly connected to the motor connection plate. At the same time, the impeller shaft and the motor shaft are one shaft, and there is no coupling transition connection in the middle. When the pump unit is repaired or replaced with spare parts, the motor and the pump cover need to be removed as a whole, which is troublesome to repair. When the shaft is damaged due to improper use, the replacement cycle will be long and the production schedule will be seriously affected. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the purpose of this invention is to provide a kind of cantilever structure vertical type ...

AI Technical Summary

Problems solved by technology

When the pump unit is repaired or replaced with spare parts, the motor and the pump cover need to be removed as a whole, which is troublesome to repair. When the shaft is damaged due to improper use, the replacement cycle will be long and the production schedule will be seriously affected.

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