O-shaped ring dynamic seal joint

Abstract

The invention relates to an O-shaped ring dynamic seal joint. The O-shaped ring dynamic seal joint comprises an air inlet inner cylinder, a sleeve and a compression cap, wherein static seal O-shaped rings are arranged between the air inlet inner cylinder and the sleeve and between the sleeve and the compression cap. The O-shaped ring dynamic seal joint further comprises a dynamic seal O-shaped ring, wherein an annular step is arranged in the sleeve, and the dynamic seal O-shaped ring is embedded in the annular step and capped by the compression cap; a radial air inlet hole and an axial air channel are arranged on the side wall of the air inlet inner cylinder, and the radial air inlet hole is communicated with the axial air channel; and the axial air channel arranged on the side wall of the sleeve is communicated with the axial air channel on the side wall of the air inlet inner cylinder and communicated with the annular step in the sleeve. The O-shaped ring dynamic seal joint disclosed by the invention can not only realize the sealing function, but also reduce and prevent the abrasion and the damages of the dynamic seal O-shaped ring due to installation and disassembly of a sealed part, thereby prolonging the service life of the O-shaped ring.

Description

technical field [0001] The invention relates to a mechanical seal, in particular to an O-ring dynamic sealing joint. Background technique [0002] Due to the simple structure, high pressure resistance and small size of the O-ring, it has been widely used in various sealing occasions. The traditional O-ring seals rely on the prestress generated by the extrusion deformation during assembly to achieve the sealing effect. In many dynamic sealing environments, the wear of the O-ring directly affects its service life, especially when the sealed parts need to be installed and disassembled frequently, the process of installation and disassembly greatly increases the wear of the O-ring , Some even directly scratch the O-ring, which seriously affects the service life of the O-ring. Therefore, we need a new type of O-ring dynamic sealing joint, which can not only realize the sealing function, but also reduce and avoid the wear and damage of the O-ring during the installation and disas...

AI Technical Summary

Problems solved by technology

In many dynamic sealing environments, the wear of the O-ring directly affects its service life, especially when the sealed parts need to be installed and disassembled frequently, the process of installation and disassembly greatly increases the wear of the O-ring , and even some directly scratch the O-ring, seriously affecting the service life of the O-ring

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