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Tooth-aligning labyrinth magnetic fluid sealing device

A magnetic fluid sealing, labyrinth-type technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as affecting the pressure resistance performance of the sealing device, improve self-healing ability, reduce magnetic fluid loss, and expand safe work. range effect

Inactive Publication Date: 2018-11-13
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a labyrinth-type split magnetic fluid sealing device with teeth, so as to solve the problem that the eccentricity of the rotating shaft in the existing sealing device affects the pressure resistance performance of the sealing device, so that the sealing technology can be successfully applied to large shaft diameter and high speed. In the case of rotation

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  • Tooth-aligning labyrinth magnetic fluid sealing device

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing.

[0025] Such as figure 1 As shown, the tooth-tooth labyrinth-type magnetic fluid sealing device includes a housing 2, an inner pole shoe ring 3, an outer pole shoe ring 4, a permanent magnet ring I5, and a permanent magnet ring II6;

[0026] The inner pole shoe ring 3 is sleeved on the shaft 1; the outer pole shoe ring 4 is installed on the inner wall of the shell 2 and is set opposite to the inner pole shoe ring 3;

[0027] A plurality of poles I7 and poles II8 are alternately arranged on the inner pole shoe ring 3 along the axial interval, and a ring groove I is formed between the pole I7 and its adjacent pole II8; the ring A permanent magnet ring I5 is arranged in the groove I; the height of the pole I7 is higher than that of the pole II8;

[0028] On the outer pole shoe ring 4, a plurality of poles III9 and poles IV10 are arranged alternately along the axial interval, ...

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Abstract

The invention relates to a tooth-aligning labyrinth magnetic fluid sealing device. The tooth-aligning labyrinth magnetic fluid sealing device comprises a housing, an inner pole shoe ring, an outer pole shoe ring, permanent magnet rings I and permanent magnet rings II, wherein the inner pole shoe ring is arranged on a shaft in a sleeving manner; the outer pole shoe ring is mounted on the inner wallof the housing, and the outer pole shoe ring and the inner pole shoe ring are oppositely arranged; a plurality of pole terminals I and pole terminals II are alternately arranged on the inner pole shoe ring in the axial direction in a spaced manner; each permanent magnet ring I is arranged between each pole terminal I and the adjacent pole terminal II; a plurality of pole terminals III and pole terminals IV are alternately arranged on the outer pole shoe ring in the axial direction in a spaced manner; each permanent magnet ring II is arranged between each pole terminal III and the adjacent pole terminal IV; the permanent magnet rings and the permanent magnets II are oppositely arranged, and a gap is formed between each permanent magnet ring and the corresponding permanent magnet II; and pole teeth are arranged on the pole terminals I and the pole terminals IV. Through the adoption of the tooth-aligning labyrinth magnetic fluid sealing device disclosed by the invention, the problem thatthe pressure resistance performance of a conventional sealing device is influenced by the eccentricity of a rotating shaft of the conventional sealing device can be solved.

Description

technical field [0001] The invention belongs to the field of mechanical engineering seals, and in particular relates to a tooth-tooth labyrinth type magnetic fluid seal device. Background technique [0002] In the magnetic liquid seal of a rotating shaft with a large shaft diameter, due to the influence of processing and assembly errors, vibration and other factors, the rotating shaft will be eccentric relative to the pole piece, which will reduce the pressure resistance of the magnetic liquid seal, so the performance of the large gap magnetic fluid seal will be improved. The withstand voltage performance is one of the hot issues in current research. [0003] One of the methods to reduce the influence of the eccentricity of the rotating shaft on the pressure resistance performance of the magnetic fluid seal is to improve the magnetic fluid sealing structure, such as the sealing device described in reference 1 (patent publication number CN 103115152A). Although the sealing d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43F16J15/447
CPCF16J15/43F16J15/447
Inventor 杨小龙孙彭何美丽
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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