Stepped magnetofluid sealing device

A ferrofluid sealing and stepped technology, which is applied to the sealing of the engine, engine components, mechanical equipment, etc., can solve the problem that the sealing device cannot meet the high sealing performance requirements, and achieve the goal of expanding the safe working range, reducing difficulty, and reducing losses Effect

Active Publication Date: 2018-02-27
GUANGXI UNIVERSITY OF TECHNOLOGY +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a stepped magnetic fluid sealing device, so as to solve the problem that the existing sealing device cannot meet the high sealing performance requirements of special working conditions such as high speed and heavy load, so that the sealing technology can be successfully applied to special working conditions such as high speed and heavy load. under the circumstances

Method used

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  • Stepped magnetofluid sealing device

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing.

[0029] like figure 1 As shown, the stepped ferrofluid seal device provided in this embodiment includes a stepped shaft 1, a housing 2, a left pole piece 3, a right pole piece 4, a middle pole piece 5, and a permanent magnet ring 6. The stepped shaft 1 is set within the casing 2;

[0030] The stepped shaft 1 includes a plurality of secondary shafts, and the diameters of the multiple secondary shafts decrease sequentially along the axial direction to the left;

[0031] There are more than one set of the middle pole piece 5; the left pole piece 3, the middle pole piece 5, and the right pole piece 4 are installed at intervals on the inner wall of the housing 2 in sequence from left to right. The pole piece 3, the middle pole piece 5, and the right pole piece 4 respectively correspond to the outer circular surface of each secondary shaft, and there is a gap between them and th...

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Abstract

The invention aims to provide a stepped magnetofluid sealing device. The stepped magnetofluid sealing device comprises a stepped shaft, a shell, a left pole shoe, a right pole shoe, one or more middlepole shoes and permanent magnet rings. The stepped shaft is arranged in the shell in a sleeved mode. The stepped shaft comprises a plurality of secondary shaft bodies, and the diameters of the multiple secondary shaft bodies become smaller gradually leftwards in the axial direction. The left pole shoe, the middle pole shoes and the right pole shoes are sequentially mounted on the inner wall of the shell at intervals from left to right. The left pole shoe, the middle pole shoes and the right pole shoe correspond to the outer circumferential surfaces of the secondary shaft bodies separately, gaps are reserved between left, middle pole and right pole shoes and the outer circumferential surfaces of the secondary shaft bodies, and magnetofluid is located in the gaps. The permanent magnet ringsare arranged between the pole shoes. By adoption of the stepped magnetofluid sealing device, sealing can be achieved in special working conditions such as high-speed and heavy-load working conditions.

Description

technical field [0001] The invention belongs to the field of mechanical engineering seals, in particular to a stepped magnetic fluid seal device. Background technique [0002] When the ferrofluid seal technology is applied in the large diameter, high speed and heavy load sealing environment, the ferrofluid in the seal gap often fails because the seal gap is too large, so improving the pressure resistance of the ferrofluid seal with a large gap is a hot topic in current research one. [0003] One of the methods to improve the pressure resistance performance of ferrofluid seals under large gaps is to improve the ferrofluid seal structure, such as the sealing device described in reference 1 (patent with publication number CN201513565U) and reference 2 (patent with publication number CN202418592U). ) said sealing device. Although the sealing performance of the two sealing devices described in the above documents has been greatly improved compared with ordinary magnetic fluid s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 杨小龙陈帆宾仕博谢国进
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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