Self-seal kinetic pressure gas radial ceramic bearing

Abstract

The invention discloses a self-seal kinetic pressure gas radial ceramic bearing which comprises an outer sleeve and an inner sleeve which are clearance fit, wherein two ends of the outer sleeve are all fixedly provided with large seal stop rings; two ends of the inner sleeve are all provided with small seal stop rings; the outer peripheral wall and two ends of the inner sleeve are all provided with trench-type decorative patterns with regular shapes; the kinetic pressure gas radial ceramic bearing is fixedly installed on a high-speed revolving shaft through the inner sleeve; and under the driven of the high-speed revolving shaft, the kinetic pressure gas generated continuously can be preferably maintained in the match clearance of the outer sleeve and the inner sleeve, a gas film required by the bearing function for supporting a high-speed operation shaft, and the seal function required by the gas film is provided by the large seal stop rings and the small seal stop rings, self-seal role is played, i.e., the ceramic bearing has self-seal performance, thus the kinetic pressure gas radial ceramic bearing function with stability and loading capability is realized.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to dynamic pressure gas radial bearings. 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 dynamic pressure gas bearing is relatively sliding to generate pressure. [0003] ...

AI Technical Summary

Problems solved by technology

However, its bearing pad structure is more complex, the installation process is more complex, and the requirements are higher than that of ordinary radial bearings, which limits its application.

[0007] Although the foil type radial gas bearing has the properties of elastic support and good stability, but because the foil bearing is generally made of metal foil, there are still some difficulties in its material manufacturing technology and processing technology, so the foil bearing Applications are also limited

[0008] Although the tilting pad and foil dynamic pressure gas radial bearings have good stability, the processing technology is relatively complicated, and there are still some difficulties in practical application at present.

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