Sleeve-pressure-type grinding device for inverted-conical-surface sealing ring

Abstract

The invention relates to a sleeve-pressure-type grinding device for an inverted-conical-surface sealing ring. The sleeve-pressure-type grinding device comprises a group of a sleeve structure and an insertion structure which can be in socket joint fit and can be connected and fastened through connecting structures. According to the sleeve structure, a recessed hole face structure, which takes a central axis as a center of rotation and has a taper angle, is formed at one axial end of a radial extended structural body, a working surface, which is vertical to the central axis and can be in contact with a non-sealed end face of a sealing ring to be machined, is formed at the radial inner side of the sleeve structure, and a reference surface vertical to the central axis is formed at the axial end, opposite to a socket joint direction, of the sleeve structure; the insertion structure is a tubular structural body, a socket joint fit end of the insertion structure has a frustum-face-shaft-boss-shaped frustum structure, a recessed hole face taper angle of the sleeve structure is not smaller than a frustum face taper angle of the insertion structure, and a tubular inner hole face, opposite to the socket joint direction, of the insertion structure takes a central axis as a center of rotation and has a hole size which is adapted to the outer periphery face diameter of the sealing ring to be machined. By the grinding device, a sealing surface, which only has the size of about several decimeters to about tens of decimeters and the maximum axial cut of tens of microns, has high surface quality requirements and has an inverted-conical surface, can be conveniently and accurately machined on a sealing end face.

Description

technical field [0001] The invention relates to a grinding device for processing the sealing end face of a sealing ring, in particular to a sealing ring with a positive tapered sealing end face. Background technique [0002] The core components to achieve sealing in the mechanical seal are the moving ring which is axially fixed and can rotate with the shaft, and the non-rotating static ring which is arranged opposite to the moving ring through the sealing surface of the shaft end and can be used for axial floating. Cone mechanical seal refers to the sealing surface of the moving ring and / or static ring with a positive or reverse conical sealing surface with a certain taper in the radial direction and the end surface, and the adjustment is made by changing the parameters of the conical surface. The dynamic and static pressure effect of the fluid film formed by the medium between the sealing end faces to obtain sufficient opening force and fluid film rigidity. Cone mechanical...

AI Technical Summary

Problems solved by technology

[0003] Since the cone angle of the conical sealing surface on the sealing ring in the conical mechanical seal is small, the value is generally only a few minutes to tens of ten, so the maximum cutting amount of the end face in the axial direction during processing is only tens of microns, and Due to the very high requirements on the surface quality of the sealing end face, including surface roughness, flatness, perpendicularity to the axis, etc., it is difficult to obtain the sealing ring with a tapered sealing surface effectively by general methods.

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