Sealing device for magnetic source embedded series-parallel type stepped shaft magnetic fluid

A technology of ferrofluid seals and stepped shafts, which can be applied to engine seals, engine components, mechanical equipment, etc., and can solve problems such as low pressure resistance

Active Publication Date: 2019-02-19
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a magnetic source embedded hybrid magnetic fluid sealing device, so as to solve the problem of low pressure resistance existing in the existing sealing device. At the same time, the assembly is simple and the processing is easy, so that the sealing technology can be successfully applied to In the fields of high speed and heavy load

Method used

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  • Sealing device for magnetic source embedded series-parallel type stepped shaft magnetic fluid

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Embodiment Construction

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

[0029] Such as figure 1 As shown, in the magnetic source embedded mixed-connection stepped shaft magnetic fluid sealing device, the corresponding stepped shaft 1 has the largest diameter of the middle shaft, and the diameter of the secondary shaft on the left side of the middle shaft decreases from right to left, and the middle shaft The diameter of the secondary shaft on the right decreases from left to right;

[0030] Including shell 2, left pole shoe ring 3, right pole shoe ring 4, permanent magnet ring I5, permanent magnet ring II6, permanent magnet ring III7, permanent magnet ring IV8;

[0031] The left pole shoe ring 3, the right pole shoe ring 4, and the permanent magnet ring II6 are arranged on the inner wall of the housing 2; the permanent magnet ring II6 is located between the left pole shoe ring 3 and the right pole shoe ring 4, and Contact with the left pole s...

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Abstract

The invention relates to a sealing device for magnetic source embedded series-parallel type stepped shaft magnetic fluid. According to the sealing device for the magnetic source embedded series-parallel type stepped shaft magnetic fluid, the diameter of a middle shaft of a stepped shaft is the largest, the diameter of a secondary shaft on the left side of the middle shaft sequentially decreases from right to left, and the diameter of a secondary shaft on the right side of the middle shaft is gradually decreased from left to right; and the sealing device comprises a shell, a left pole shoe ring, a right pole shoe ring, a first permanent magnet ring, a second permanent magnet ring, a third permanent magnet ring and a fourth permanent magnet ring. The problem that an existing sealing device is low in pressure resistance can be solved, and meanwhile the assembling is simple, the processing is easy, and the sealing technology is successfully applied to the fields of high-speed heavy load and the like.

Description

technical field [0001] The invention belongs to the field of mechanical engineering seals, in particular to a magnetic source embedded hybrid type stepped shaft magnetic fluid seal device. Background technique [0002] Since its inception, magnetic fluid has been popularized and developed all over the world, because of its zero-leakage sealing ability, because there is no solid friction between the moving part and the stationary part, only viscous friction, which is comparable to the contact seal type. The specific loss is small, which is especially suitable for the situation requiring small frictional resistance and high speed. In addition, the magnetic fluid technology has a simple structure, convenient operation and maintenance, and has been widely used due to its good chemical and physical properties. However, under the conditions of high-speed shafts and other large sealing gaps, the sealing performance of magnetic fluid will be relatively poor. Therefore, it is of grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 杨小龙郝付祥宾仕博李瑞生
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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