Self-cleaning toothed dynamic-pressure-type groove end face mechanical sealing structure

Abstract

The invention discloses a self-cleaning toothed dynamic-pressure-type groove end face mechanical sealing structure. The structure comprises a dynamic ring and a static ring which are mechanically sealed; one end face of the dynamic ring or the static ring is provided with a self-cleaning toothed dynamic-pressure-type groove ring belt and an auxiliary dynamic-pressure-type groove ring belt which are symmetrically distributed about a rotation center, self-cleaning toothed dynamic-pressure-type grooves are composed of dynamic pressure grooves and cleaning grooves, and the self-cleaning toothed dynamic-pressure-type grooves and auxiliary dynamic-pressure-type grooves are formed in the upstream and downstream portions of the end face respectively and separated by a sealed dam. The non-contact mechanical end face sealing structure prevents deposition blockage of medium particles in end face mold grooves through the cleaning groove structures, solves the blockage problem of the sealed end face mold grooves under high temperature and multi-particle medium conditions, reduces the contact wear of the sealed end face since the dynamic pressure opening force of the sealed end face decreases, and is long in service life.

Description

technical field [0001] The invention belongs to the technical field of end face mechanical seal structure design, and relates to a self-cleaning tooth-shaped dynamic pressure groove end face mechanical seal structure, specifically refers to a self-cleaning tooth-shaped dynamic pressure groove and an auxiliary dynamic pressure type formed by a spiral groove and a cleaning groove The groove end face mechanical seal structure is suitable for the sealing device of mechanical shafts such as engines, compressors, pumps and kettle agitators. Background technique [0002] Non-contact end-face machinery is increasingly widely used in rotating machinery because of its non-contact operation of the end face, which presents good wear resistance and long life advantages. With the high parameterization of rotating mechanical equipment such as engines, compressors, pumps and kettle agitators, and the diversification of working media, mechanical seals are required to have better adaptability...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of contact wear and poor sealing reliability caused by the deposition and clogging of the sealing end surface grooves in the existing technology under complex working conditions such as high temperature and multi-particle media, the present invention provides a reliable and reliable Self-cleaning tooth-shaped dynamic pressure groove non-contact mechanical end face seal structure with high performance and long service life

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