Tilting directional microporous end surface mechanical sealing structure

Abstract

The invention relates to a tilting directional microporous end surface mechanical sealing structure comprising a dynamic ring and a static ring which are sealed mechanically, one side of the end surface of the dynamic ring and the static ring is a high-voltage side, namely, an upstream part, and the other side thereof is a low-voltage side, namely, a downstream part; the end surface of the dynamic ring or the static ring is provided with a microporous ring belt which is arranged on the upstream part of the end surface; the downstream part of the microporous ring belt is provided with a continuous ring-shaped sealing dam; and a long shaft of the micropore forms a tilting angle with the diameter of the sealing end surface passing through the center of the micropore. The tilting directional micropore end surface mechanical sealing structure has the beneficial effects of: greatly improving hydrodynamic effect of the microporous end surface, leading the sealing to have good starting-stopping effect under low-voltage condition, being capable of being applied in a liquid medium and a gas medium by setting the depth of the micropore, being capable of fully exerting the capabilities and advantages of microporous solid particles, realizing no contact, wear resistance and no leakage of sealing, prolonging the service life and improving the sealing reliability.

Description

technical field [0001] The patent of the present invention relates to the technical field of end face mechanical seal structure design, specifically refers to the inclined directional microporous end face mechanical seal structure, which is suitable for the shaft end sealing device of rotating shafts of various compressors, pumps and kettle agitators. Background technique [0002] Mechanical seals are the main means to prevent shaft end leakage of rotary fluid machinery. With the rapid development of petrochemical and other industries, mechanical seals are required to develop to high parameters, with higher stability and reliability and longer service life. Since the 1990s, domestic and foreign sealing companies represented by John Crane have successively introduced one-way spiral grooves, one-way herringbone spiral grooves, one-way Y-shaped spiral grooves, one-way L-shaped spiral grooves, one-way End face seals such as arc grooves, two-way T-shaped grooves, two-way U-shaped...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the limited anti-solid particle ability and fluid dynamic pressure effect of the seal in the prior art, the start-stop effect is poor under low pressure conditions, and the service life is short, especially when it is applied to a medium containing solid particles or a gas medium, the sealing reliability is poor. Insufficient, the present invention provides a medium that can be applied to various conditions, which enhances the hydrodynamic pressure effect of micropores, fully exerts the advantages of reducing wear on the end faces of micropores, makes the sealing start and stop effect good, can be started frequently, and has high reliability. Inclined directional microporous end face mechanical seal structure with long service life

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