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A step-type ferrofluid sealing device of magnetic conduction cylinder

A technology of magnetic fluid sealing and magnetic guiding cylinder, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of reducing stress concentration and low pressure resistance, so as to reduce stress concentration and facilitate production and processing. , the effect of reducing losses

Active Publication Date: 2020-07-17
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a step-type ferrofluid sealing device with a magnetic conducting cylinder, so as to solve the problem of low pressure resistance existing in the existing single magnetic source ferrofluid sealing device and multi-magnetic source ferrofluid sealing device, and reduce the stress at the same time Concentration, making this sealing technology successfully applied in high-speed and heavy-duty fields

Method used

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  • A step-type ferrofluid sealing device of magnetic conduction cylinder

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Embodiment Construction

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

[0028] like figure 1 As shown, the step-type ferrofluid sealing device of the magnetic permeable cylinder includes a casing 2;

[0029] Composed of more than one magnetic fluid sealing unit, the magnetic fluid sealing unit includes a left sleeve 3, a right sleeve 4, a pole shoe ring 5, a magnetic tube 6, a middle permanent magnet ring 7, and an outer permanent magnet ring 8;

[0030] The left sleeve 3 and the right sleeve 4 are mounted on the shaft 1 in a threaded connection; an intermediate permanent magnet ring 7 is arranged between the left sleeve 3 and the right sleeve 4, and the intermediate permanent magnet The ring 7 is set on the shaft 1; the left sleeve 3 is composed of more than two steps of stepped rings, and the radial height of each stepped ring of the left sleeve 3 increases from right to left; the right sleeve 4 It consists of more than two steps of stepped...

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Abstract

The invention relates to a stepped magnetic fluid sealing device with magnetic conductive cylinders. The stepped magnetic fluid sealing device comprises an outer shell and is composed of one or more magnetic fluid sealing units, wherein the magnetic fluid sealing units comprise left sleeves, right sleeves, pole shoe rings, the magnetic conductive cylinders, intermediate permanent magnet ring and outer permanent magnet rings. By the adoption of the stepped magnetic fluid sealing device provided by the invention, the problem that a conventional single-magnetic-source magnetic fluid sealing device and a conventional multi-magnetic-source magnetic fluid sealing device are low in pressure resistance can be solved; meanwhile, the concentration of stress can be reduced; and the involved sealing technology can be successfully applied to the fields of high-speed heavy loads and the like.

Description

technical field [0001] The invention belongs to the field of mechanical engineering seals, and in particular relates to a step-type magnetic fluid seal device of a magnetic conduction cylinder. Background technique [0002] Magnetic fluid sealing technology is a new type of sealing technology, which has the advantages of zero leakage, long life, high reliability, no pollution and high rotational speed. It is precisely because of these advantages that magnetic fluid sealing technology is widely used in vacuum equipment, dustproof, anticorrosion and other fields that require high sealing performance. [0003] Therefore, by improving the magnetic fluid sealing structure as a method to improve the pressure resistance performance of the magnetic fluid seal under the large gap, as the sealing device described in the reference document (the patent publication number is CN207393960U), although the sealing device described in the above document is relatively ordinary. The performanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 杨小龙郝付祥宾仕博邱敏敏
Owner GUANGXI UNIVERSITY OF TECHNOLOGY