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Embedded maze type magnetic fluid sealing device

A ferrofluid sealing and labyrinth technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of low pressure resistance performance, achieve the effect of improving pressure resistance performance, reducing losses, and expanding the safe working range

Pending Publication Date: 2019-05-17
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an embedded 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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  • Embedded maze type magnetic fluid sealing device

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with accompanying drawing.

[0036] Such as figure 1 As shown, the embedded labyrinth magnetic fluid seal device includes a stepped shaft 1, a housing 2, a left pole shoe ring 3, a right pole shoe ring 5, a middle sleeve 7, and a middle permanent magnet ring 9;

[0037] The stepped shaft 1 includes a primary shaft 101 with the largest diameter and more than one set of secondary shafts with successively decreasing diameters. The secondary shafts are arranged on both sides along the side of the primary shaft 101, with 1 The middle radial cross-section of the stage shaft 101 is left-right symmetrical;

[0038] The left one pole shoe ring 3, the middle permanent magnet ring 9, and the right one pole shoe ring 5 are sequentially set on the inner wall of the housing 2, and the right end face of the left one pole shoe ring 3 is in contact with the left end face of the middle permanent magnet ring 9 , the ri...

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Abstract

The invention aims to provide an embedded maze type magnetic fluid sealing device. The embedded maze type magnetic fluid sealing device comprises a stepped shaft, a shell, a left first pole shoe ring,a right first pole shoe ring, a middle sleeve and a middle permanent magnet ring; and the stepped shaft comprises a first-stage shaft with the largest diameter and one or more secondary first-stage shafts which are sequentially reduced in diameter, the secondary first-stage shafts are arranged on the two sides of the first-stage shaft in sequence along the side face of the first-stage shaft, andthe secondary first-stage shafts which take the middle radial section of the first-stage shaft as a boundary are symmetric. The invention aims to solve the problem that an existing sealing device is low in pressure resistance, so that 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 an embedded labyrinth 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 the high sealin...

Claims

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Application Information

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IPC IPC(8): F16J15/43F16J15/447
Inventor 杨小龙张锐博邱敏敏
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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