Forced circulation axial flow pump

Abstract

Disclosed is a forced circulation axial flow pump. The forced circulation axial flow pump is structurally characterized in that a mechanical sealing device and a guide bearing are installed at the position, close to the impeller end, of a pump shaft in sequence. The guide bearing is located in a supporting pipe. A shaft cantilever is shortened through supporting of the guide bearing for the pump shaft. The stability of a rotor part is enhanced, and the service life of the equipment is prolonged. The mechanical sealing device completely isolates the shaft from a conveying medium. Wear and corrosion of the shaft are effectively prevented, and the maintenance cost of the equipment is reduced. A pump cover, a bearing body and the pump shaft form a whole to be connected with the pump body. Therotor part can be completely pulled out, disassembly, assembly and repair are convenient, and time and effort are saved. Through holes are formed in the pump cover and the supporting pipe and connected with a sealing flush interface, cooling and lubrication functions on the shaft and the guide bearing can be achieved by inputting flushing liquid through the interface, and mechanical breakdown of the rotor part caused by temperature change is reduced. An in-out opening of a pump body is designed into a 90-degree bent head form, the forced circulation axial flow pump can be directly connected toa pipeline, any support is not needed, and installing is fast and convenient.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering pumps, in particular to a forced circulation axial flow pump. Background technique [0002] At present, horizontal axial flow pumps are more and more widely used, and their structural characteristics are: the axial dimension is relatively long, and the cantilever of the pump shaft at the end of the impeller is relatively large, which leads to poor overall operation stability of the pump and shortens the life of the pump. The connection between the pump cover and the pump body is more complicated, the assembly and disassembly are more troublesome, and the maintenance is also inconvenient. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a forced circulation axial flow pump with a reduced cantilever for installing the pump shaft at the impeller end and convenient disassembly and maintenance. ...

AI Technical Summary

Problems solved by technology

[0002] At present, horizontal axial flow pumps are more and more widely used, and their structural characteristics are: the axial dimension is relatively long, and the cantilever of the pump shaft at the end of the impeller is relatively large, resulting in poor overall operation stability of the pump and a short service life of the pump

The connection between the pump cover and the pump body is more complicated, the assembly and disassembly are more troublesome, and the maintenance is not convenient

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