High-performance sealing shaft sleeve for spiral centrifugal pump

Abstract

The invention provides a high-performance sealing shaft sleeve for a spiral centrifugal pump. The high-performance sealing shaft sleeve for the spiral centrifugal pump comprises an inner shaft sleeveand an outer shaft sleeve; multiple sealing rings are arranged in the inner shaft sleeve; the outer shaft sleeve comprises a sleeve and a connecting plate; the inner shaft sleeve is provided with a ring groove and a positioning plate; the sleeve is provided with a ring plate; the connecting plate is provided with a positioning groove; the sealing rings comprise sealing upper parts, sealing middleparts and sealing lower parts; the sealing upper parts and the sealing lower parts are provided with symmetrical sealing structures; the sealing middle parts are provided with multiple elastic throughholes; and the sealing structures consist of two sets of airtight grooves and line sealing grooves. The high-performance sealing shaft sleeve for the spiral centrifugal pump is simple in structure, reasonable in design, stable in axial direction and not easy to incline; meanwhile, through arrangement of elastic through holes, the elastic stress of the sealing rings can be effectively improved toguarantee the sealing persistence; and line sealing, face sealing and air sealing are combined to greatly improve the sealing effect so as to guarantee efficient and stable operation of the spiral centrifugal pump.

Description

technical field [0001] The invention relates to a sealing shaft sleeve, in particular to a high-performance sealing shaft sleeve for a screw centrifugal pump. Background technique [0002] The screw centrifugal pump organically combines the volumetric inference function of the screw and the centrifugal effect of the blade through its special three-dimensional helical blade, so that the medium can obtain energy. Therefore, it has the characteristics of both volumetric pump and vane pump, and is the product of the combination of the two. [0003] The old-fashioned screw centrifugal pumps currently used have poor sealing effect on the shaft sleeve, and leakage is prone to occur at the joint between the pump shaft and the pump body. When leakage occurs, the exudate is easy to overflow to the surface of the screw centrifugal pump, which is very inconvenient to clean. , At the same time, the stability is insufficient, and it is prone to skewing, which affects the axial direction....

AI Technical Summary

Problems solved by technology

[0003] The old-fashioned screw centrifugal pumps currently used have poor sealing effect on the shaft sleeve, and leakage is prone to occur at the joint between the pump shaft and the pump body. When leakage occurs, the exudate is easy to overflow to the surface of the screw centrifugal pump, which is very inconvenient to clean. , at the same time, the stability is insufficient, and it is prone to skew, which affects the axial direction

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