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Trapezoid pole shoe sleeve type magnetic fluid seal device

A magnetic fluid sealing, trapezoidal pole 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 expand safety. The effect of the working area

Active Publication Date: 2018-05-08
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a radial 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

Method used

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  • Trapezoid pole shoe sleeve type magnetic fluid seal device

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with accompanying drawing.

[0028] Such as figure 1 As shown, the trapezoidal pole shoe sleeve type ferrofluid seal device includes shaft 1, housing 2, left pole shoe ring 3, right pole shoe ring 4, upper permanent magnet ring 6, lower permanent magnet ring 7, trapezoidal sleeve Barrel 8;

[0029] The left pole shoe ring 3 and the right pole shoe ring 4 are set between the shell 2 and the shaft 1; the outer circular surfaces of the left pole shoe ring 3 and the right pole shoe ring 4 are in contact with the shell 2, and the left pole The inner circles of the shoe ring 3 and the right pole shoe ring 4 extend toward the outer circle of the shaft 1, leaving a gap between them and the outer circle of the shaft 1; the left pole shoe ring 3 and the right pole shoe ring 4 A pole tooth III5 is arranged on the inner circle of the shaft, and the pole tooth III5 extends radially toward the outer circle of the ...

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Abstract

The invention relates to a trapezoid pole shoe sleeve type magnetic fluid seal device comprising a shaft, a shell, a left pole shoe ring, a right pole shoe ring, an upper permanent magnet ring, a lower permanent magnet ring and a trapezoid sleeve. The inner circular face of the left pole shoe ring and the inner circular face of the right pole shoe ring are provided with pole teeth III. The upper permanent magnet ring is arranged on the inner wall of the shell. The trapezoid sleeve is arranged on the shaft in a sleeving manner. The outer circular face of the trapezoid sleeve corresponds to theupper permanent magnet ring. A gap exists between the outer circular face of the trapezoid sleeve and the inner circular face of the upper permanent magnet ring. A groove I is formed in the outer circular face of the trapezoid sleeve. The lower permanent magnet ring is arranged in the groove I. The left end face of the trapezoid sleeve is an inclined annular face I. The right end face of the trapezoid sleeve is an inclined annular face II. The inclined annular face I is provided with pole teeth I. The inclined annular face II is provided with pole teeth II. The trapezoid pole shoe sleeve typemagnetic fluid seal device aims to solve the difficult problem that an existing seal device is poor in pressure resistance.

Description

technical field [0001] The invention belongs to the field of mechanical engineering seals, in particular to a trapezoidal pole shoe sleeve type 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 t...

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谢国进
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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