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Double-shaft magnetic liquid sealing structure

A technology of magnetic liquid and sealing structure, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., to achieve the effect of simple assembly, low volatility and long service life

Inactive Publication Date: 2010-07-28
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A layer of 1Cr13 is electroplated on the outer cylindrical surface of the shaft sleeve

Method used

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  • Double-shaft magnetic liquid sealing structure
  • Double-shaft magnetic liquid sealing structure

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Embodiment Construction

[0010] The present invention will be further described with accompanying drawing as specific embodiment:

[0011] The dual-axis magnetic liquid seal structure includes: a first-axis magnetic liquid seal structure and a second-axis magnetic liquid seal structure.

[0012] The structure of the first-axis magnetic liquid seal is the same as that of the existing single-axis magnetic liquid seal. The connection between its components is as follows:

[0013] A layer of 1Cr13 is electroplated on the outer cylindrical surface of the shaft sleeve 7 .

[0014] First put the first O-ring 9 and the second O-ring 12 into the sealing grooves of the first pole piece 8 and the second pole piece 11 respectively; the first permanent magnet 10 is sandwiched between the above-mentioned first and second The middle of the pole piece is bonded with glue, and a magnetic liquid is injected into the inner ring surface of the first permanent magnet 10 to form the first sealing assembly.

[0015] The ...

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PUM

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Abstract

The invention provides a double-shaft magnetic liquid sealing structure, and relates to a mechanical sealing structure. The structure comprises a first shaft magnetic liquid sealing structure and a second shaft magnetic liquid sealing structure, wherein the outer cylindrical surface of a shaft sleeve (7) is plated with a layer of 1Cr13; the second shaft magnetic liquid sealing structure had a fourth bearing (26), a fourth magnetism isolating ring (25), a second sealing component, a third magnetism isolating ring (19), a second clasp (18), a third bearing (17) and a first clasp (15) sequentially arranged into a shaft shoulder of the shaft sleeve and on a boss of a jacket (27), and allows a big end cover (15) and the jacket (27) to be in threaded connection and fixation; and the first clasp and the second clasp are both embedded in a shaft sleeve groove. The structure solves the double-shaft magnetic liquid sealing problem of film plating machines, and ensures that the film plating machines have the sealing leakage rate below 10 to 11 pal m<3> / s and are long in lifespan.

Description

technical field [0001] The invention relates to a mechanical seal structure, in particular to a biaxial magnetic liquid seal structure. Background technique [0002] Magnetic liquid seal is a new type of seal, which has advantages that ordinary seals do not have, such as: (1) zero leakage, (2) high reliability, (3) long life, (4) no pollution, etc. So far, the magnetic liquid seals are single-axis magnetic liquid seals. The sealing structure on the coating machine requires double-axis seals. Seals are required between the intermediate shaft and the shaft sleeve, and between the shaft sleeve and the outer casing. The sealing method currently used is , Between the intermediate shaft and the shaft sleeve is a single-axis magnetic liquid seal, and the common seal used between the shaft sleeve and the outer sleeve is difficult to meet the sealing requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a biaxial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43
Inventor 李德才王庆雷
Owner BEIJING JIAOTONG UNIV