Mechanical seal structure of spike-shaped distribution microporous end surface

Abstract

The invention provides a mechanical seal structure of a spike-shaped distribution microporous end surface, comprising a moving ring and a static ring which are mechanically sealed, wherein the one side of the end surface of the moving ring and one side of the end surface of the static ring are high pressure sides, namely upstream; the other side of the end surface of the moving ring and the other side of the end surface of the static ring are low pressure sides, namely downstream; at least one end surface of the moving ring or static ring is provided with a group of spike-shaped micropores which are symmetrically distributed based on a rotation center and composed of inclined hydrodynamic micropores and nondirectional decompressed micropores, wherein the decompressed micropores are arranged at the tail ends of the hydrodynamic micropores; the spike-shaped micropore group forms a ring belt which is arranged on the upstream of the end surface; and the downstream of the ring belt is provided with an annular seal dam with a smooth plane. The mechanical seal structure has the beneficial effects that seal disturbance-resistant capability and stability are improved by controlling fluid hydrodynamic effect of the microporous end surface and increasing damp; the capability and advantage that micropores can prevent solid particles can be fully performed; and the fluid hydrodynamic effect and disturbance resistivity are enhanced so that noncontact stability and wear resistivity of seal are improved, the service life is prolonged, and the reliability of the seal is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical end face sealing, and in particular relates to a shaft end sealing device suitable for rotating shafts of various compressors, pumps, kettles and other rotating machines, and in particular to a mechanical seal structure on the end face of micropores arranged in a fringe shape. Background technique [0002] Due to the unique advantages of surface texture technology in surface friction reduction, it has been successfully applied in mechanical seals. Engineering practice shows that the anti-friction and wear resistance of surface microstructure can effectively improve the wear resistance and service life of the sealing end face. Especially in the occasions such as easy vaporization and crystallization, high solid particle content or high operating parameters, microporous seals show excellent tribological properties, and the research and application of microporous seals have been paid more and more ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the lack of poor high-speed anti-interference ability of the seal in the prior art, the present invention provides a medium that can be applied to various conditions, improves the follow-up of the microhole end face, reduces the contact wear of the end face, and fully utilizes the micropore end face. Excellent anti-friction advantages make the seal have good anti-interference effect, frequent start-up, high reliability and long service life.

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