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Stepped end face type magnetic fluid sealing device

A magnetic fluid and sealing device technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as the inability to achieve high sealing performance, and achieve the effect of expanding the safe working range, reducing losses, and stable and reliable sealing performance

Active Publication Date: 2016-10-12
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the requirement that the existing sealing device cannot achieve high sealing performance under high-speed or large gap working conditions, and provides a stepped end-face magnetic fluid sealing device

Method used

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  • Stepped end face type magnetic fluid sealing device

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing.

[0020] Such as figure 1 A stepped end-face magnetic fluid sealing device shown includes a housing 2, a left pole piece 6, a middle pole piece 8, a right pole piece 9, and a permanent magnet 7. The middle pole piece 8 is installed in the middle of the shaft 1 , the left end surface and the right end surface of the middle pole piece 8 are both stepped structures, and the steps on the left end surface and the right end surface are respectively set along the radial direction of the shaft 1; the left pole piece 6 is installed on the left side of the middle pole piece 8, and the right The pole piece 9 is installed on the right side of the middle pole piece 8;

[0021] A pole tooth I61 and an annular groove I62 are arranged on the right end surface of the left pole piece 6, the number of steps of the pole tooth I61 and the left end surface of the middle pole piece 8 are equal, an...

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Abstract

The invention relates to the field of mechanical engineering sealing, in particular to a stepped end face type magnetic fluid sealing device. The stepped end face type magnetic fluid sealing device comprises a housing, a left pole shoe, a middle pole shoe, a right pole shoe and permanent magnets, wherein the middle pole shoe is installed in the middle of a shaft, and step structures are symmetrically arranged on the left side and the right side of the middle pole shoe in the radial direction. The left pole shoe is installed on the left side of the middle pole shoe, the right pole shoe is installed on the right side of the middle pole shoe, pole teeth I and an annular groove I are arranged on the right end face of the left pole shoe, the pole teeth I correspond to the step side face of the left end of the middle pole shoe, and the annular groove I is formed among the pole teeth I. Pole teeth II and an annular groove II are arranged on the left end face of the right pole shoe, the pole teeth II correspond to the step side face of the right end of the middle pole shoe, and the annular groove II is formed among the pole teeth II. The permanent magnets are installed in the annular groove I and the annular groove II. The sealing device has good sealing properties and can meet the using requirements of working conditions including large gap, 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 stepped end face magnetic fluid seal device. Background technique [0002] The pressure resistance performance of the magnetic fluid seal decreases significantly with the increase of the seal gap. Therefore, improving the pressure resistance performance of large-gap magnetic fluid seals is one of the hot issues in current research. 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. Compared with the traditional sealing structure, the sealing performance of the existing magnetic fluid sealing device has been greatly improved by setting the labyrinth sealing structure. In addition, due to the defects in the sealing structure, the leakage of magnetic fluid is large when the seal fails, and the pressure resistance is low, which cannot meet the requirements of la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 杨小龙高尚晗邹乃威
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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