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Magnetic liquid seal

A magnetic liquid and sealing device technology, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of difficult injection of magnetic liquid and difficulty of filling sealing gap with magnetic liquid.

Active Publication Date: 2021-04-20
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to inject the magnetic liquid into the magnetic liquid seal, especially the magnetic liquid is difficult to fill the sealing gap uniformly and effectively

Method used

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  • Magnetic liquid seal
  • Magnetic liquid seal
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Embodiment Construction

[0027] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0028] Such as Figure 1-Figure 3 As shown, the magnetic liquid seal device according to the embodiment of the present invention includes a housing 100 , a shaft 200 and a magnetic seal 300 .

[0029] Such as figure 1 and image 3 As shown, the material of the housing 100 is a non-magnetic material. The casing 100 has a cavity 120 , and the cavity 120 includes a sealed cavity 121 filled with a magnetic liquid 820 . One end of the housing 100 is provided with a first through hole 102 , and the other end of the housing 100 is provided with a second through hole 103 .

[0030] Further, as figure 1 and image 3 As shown, the housing 100 includes a barrel 101 a...

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Abstract

The invention discloses a magnetic liquid sealing device. The magnetic liquid sealing device includes a casing, a shaft and a magnetic seal. The casing has a sealing chamber filled with magnetic liquid; one end of the shaft passes through the first The through hole protrudes from the housing, and the outer peripheral surface of the shaft is provided with a liquid injection tank with one end protruding from the housing; the magnetic seal is located in the sealing cavity, and the magnetic seal includes a magnetic source and a pole shoe , there are a plurality of pole shoes, at least one magnetic source, a plurality of pole shoes are arranged at intervals in the length direction of the housing, and the magnetic source is connected to two adjacent pole shoes Between the plurality of pole pieces and the shaft there is a sealing gap communicating with the liquid injection groove, and the magnetic liquid is suitable to be adsorbed in the sealing gap under the magnetic force. The magnetic liquid sealing device of the embodiment of the present invention can directly inject the magnetic liquid into the sealing gap by using the liquid injection tank, and the injection of the magnetic liquid is convenient and fast.

Description

technical field [0001] The invention relates to the technical field of sealing, in particular to a magnetic liquid sealing device. Background technique [0002] The magnetic liquid sealing technology has the advantages of zero leakage, strong reliability, simple structure, long life, no wear and recovery, and is widely used in the industrial field. However, it is difficult to inject the magnetic liquid into the magnetic liquid seal, especially it is difficult for the magnetic liquid to fill the sealing gap uniformly and effectively. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. [0004] Therefore, the embodiment of the present invention proposes a magnetic liquid sealing device, which can directly inject magnetic liquid into the sealing gap by using a liquid injection tank. The magnetic liquid can be injected conveniently and quickly, and the magnetic liquid can be unif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/43
CPCF16J15/43F16J15/002
Inventor 李德才李倩陈思宇
Owner TSINGHUA UNIV
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