Shrink-fit Grinding Device for Machining Inverted Taper Sealing Ring

Abstract

A hot jacket type grinding device for machining a reverse conical surface sealing ring is provided with a radial extended disk body with a center axis as a gyration center, and a cylindrical extending structure axially extending towards one side on the radial outer side of the radial extended disk body, and the internal diameter of the cylindrical extending structure can adapt to the peripheral diameter of the machined sealing ring. The two axial end faces of the disk body are a reference surface perpendicular to the center axis and a positioning working face which can make contact with the non-sealed end face of the machined sealing ring. The inner hole face of the cylindrical extending structure is a cylindrical or conical gyration hole face, wherein the diameters of the root circumferential face in the direction of the positioning working face is smaller than or equal to the diameter of the axial extending end. The grinding device can conveniently and precisely machine a sealing face on the sealing end face, wherein the sealing face is only several decimeters or even to dozens of decimeter, the maximum cutting output in the axial direction is not larger than dozens of micron, the requirement for the surface quality of the sealing end face is very high, and especially the sealing face is provided with a reverse tapered surface.

Description

Technical field [0001] The invention relates to a grinding device used for processing the sealing end face of a sealing ring, in particular to a grinding device with an inverted conical sealing end face sealing ring. Background technique [0002] The core components for sealing in mechanical seals are a moving ring that is axially fixed and can rotate with the shaft, and a non-rotating static ring that is arranged opposite to the moving ring by the shaft end sealing surface and can be axially floating. Cone mechanical seal means that a forward or reverse conical sealing surface with a certain taper in the radial direction and the end surface is provided on the sealing end surface of the moving ring and / or the static ring, which can be adjusted by changing the parameters of the conical surface The dynamic and static pressure effects of the fluid film formed between the sealing end faces of the medium to obtain sufficient opening force and fluid film rigidity. Cone mechanical seal...

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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