Self-sealing hydrodynamic gas radial ceramic bearings

Abstract

The invention discloses a self-sealing dynamic pressure gas radial ceramic bearing, which comprises a ceramic bearing outer sleeve, a ceramic bearing inner sleeve, a large sealing stop ring and a small sealing stop ring. Grooves and evenly distributed concave holes, the outer circle and both ends of the ceramic bearing inner sleeve have regular-shaped groove patterns, and the inner circle has evenly distributed grooves, and the ceramic bearing inner sleeve is located in the ceramic bearing outer sleeve , the large sealing stop ring is arranged at both ends of the ceramic bearing outer sleeve, and the small sealing stop ring is arranged at both ends of the ceramic bearing inner sleeve. The dynamic pressure gas radial ceramic bearing of the present invention is equipped with large sealing stop rings at both ends of the ceramic bearing outer sleeve, small sealing stop rings at both ends of the ceramic bearing inner sleeve, and processed at both ends of the ceramic bearing inner sleeve. With regular-shaped groove patterns, driven by the high-speed rotary shaft, the continuously generated dynamic pressure gas can be better kept in the matching gap between the two ends of the inner sleeve of the ceramic bearing and the large sealing stop ring and the small sealing stop ring. The air film required for the sealing function is formed to play a self-sealing role, thereby ensuring that the bearing has good stability and load capacity.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a high-rigidity self-sealing dynamic pressure gas radial ceramic bearing capable of supporting a high-speed rotary shaft. Background technique [0002] Bearings can be divided into rolling bearings (using balls or rollers), oil-free bearings (using lubricating materials for friction), sliding bearings (using oil), gas bearings, and magnetic bearings (using magnetic force for non-contact action). Sliding bearings are further divided into hydrodynamic bearings and hydrostatic bearings, in which hydrodynamic bearings support the shaft by generating oil pressure through relative sliding motion; hydrostatic bearings support the shaft through high-pressure oil provided outside the bearing of. Gas bearings operate on the same principle as plain bearings except that gas is used instead of oil. The static pressure gas bearing is provided with pressurized gas from the outside; while the...

AI Technical Summary

Problems solved by technology

It can not only solve a series of problems that are difficult to achieve in industrialization such as high cost and low benefit caused by the existing tilting pad radial dynamic pressure gas bearing in the bearing pad structure and installation process, but also solve the problem of In terms of

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