Radial sleeve type labyrinth type magnetic fluid sealing device

A ferrofluid sealing and labyrinth technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem of low pressure resistance, improve pressure resistance and sealing reliability, increase magnetic flux, and reduce losses Effect

Inactive Publication Date: 2018-04-24
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a radial sleeve type labyrinth magnetic fluid sealing device, so as to solve the problem of low pressure resistance existing in the existing sealing device, so that the sealing technology can be successfully applied in the fields of high speed and heavy load

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  • Radial sleeve type labyrinth type magnetic fluid sealing device

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] Such as figure 1 As shown, the radial sleeve type labyrinth ferrofluid seal device includes a shaft 1, a casing 2, a left pole shoe ring 3, a right pole shoe ring 4, a sleeve 5, and a permanent magnet ring 6;

[0025] The left pole shoe ring 3 and the right pole shoe ring 4 are spaced apart in the housing 2, the outer circular surfaces of the left pole shoe ring 3 and the right pole shoe ring 4 are in contact with the inner wall of the housing 2, the left pole shoe ring 3 and the The inner circular surface of the right pole shoe ring 4 extends radially toward the outer circular surface of the shaft 1, leaving a gap with the outer circular surface of the shaft 1;

[0026] The sleeve 5 is set on the shaft 1 and is located between the left pole shoe ring 3 and the right pole shoe ring 4; the permanent magnet ring 6 is arranged in the casing 2 and is located between the...

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Abstract

The invention relates to a radial sleeve type labyrinth type magnetic fluid sealing device. The radial sleeve type labyrinth type magnetic fluid sealing device comprises a shaft, a shell, a left poleshoe ring, a right pole shoe ring, a sleeve and a permanent magnet ring. The left pole shoe ring and the right pole shoe ring are arranged in the shell in a spaced mode; the shaft is sleeved with thesleeve located between the left pole shoe ring and the right pole shoe ring; the permanent magnet ring is arranged in the shell and located between the left pole shoe ring and the right pole shoe ring; a gap is reserved between the outer circular face of the sleeve and the inner circle face of the permanent magnet ring; pole teeth I are arranged on the right end face of the left pole shoe ring atintervals; pole teeth II are arranged on the left end face of the sleeve at intervals, and pole teeth III are arranged on the right end face of the sleeve at intervals; and pole teeth IV are arrangedon the left end face of the right pole shoe ring at intervals. The radial sleeve type labyrinth type magnetic fluid sealing device is used for solving the problem of low pressure-resistant performanceof an existing sealing device, and the sealing technology is successfully applied to the fields such as the high-speed and heavy-load field.

Description

technical field [0001] The invention belongs to the field of mechanical engineering seals, in particular to a radial sleeve type labyrinth magnetic fluid seal device. Background technique [0002] When the magnetic fluid sealing technology is applied in a large-diameter, high-speed and heavy-duty sealing environment, the magnetic fluid in the sealing gap often fails because the sealing gap is too large. Therefore, improving the pressure resistance of the large-gap magnetic fluid seal is a hot topic in current research. one. [0003] One of the methods to improve the pressure resistance performance of magnetic fluid seals under large gaps is to improve the structure of magnetic fluid seals, such as the sealing device described in reference 1 (patent publication number CN 103115152A). Although the sealing device described in the above literature has greatly improved the sealing performance compared with ordinary magnetic fluid, its sealing performance still cannot meet the hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43F16J15/447
CPCF16J15/43F16J15/4476
Inventor 杨小龙孙彭陈帆郝付祥何美丽
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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