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Magnetic liquid sealing device

A technology of magnetic liquid and sealing device, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of poor sealing effect, magnetic liquid leaving the surface of the rotating shaft, etc.

Active Publication Date: 2021-07-06
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the related art, when the magnetic liquid sealing device operates at a high speed, part of the magnetic liquid is likely to be separated from the surface of the rotating shaft due to centrifugal force, resulting in poor sealing effect

Method used

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Embodiment Construction

[0035] 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.

[0036] Such as Figure 1-6 As shown, the magnetic liquid sealing device according to the embodiment of the present invention includes a housing 1 , a rotating shaft 2 , a pole shoe assembly 7 , a mass 4 , a connecting rod 5 , a first bearing 6 , and a reset member 9 .

[0037] The shell 1 is provided with an inner cavity. At least part of the rotating shaft 2 is rotatably fitted in the inner cavity, the rotating shaft 2 includes a transition section 21, the transition section 21 is located in the inner cavity, the transition section 21 has a first end and a second end, the cross section of the transition section 21 is along the The direction from the first end ...

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Abstract

The invention discloses a magnetic liquid sealing device which comprises a shell, a rotating shaft, pole shoe assemblies, mass blocks, connecting rods, first bearings, reset pieces, magnetic liquid and the like. The rotating shaft penetrates through the shell, a transition section is arranged on the rotating shaft, the pole shoe assemblies are arranged on the peripheral wall of the transition section in a sleeving mode, the matching portions of the pole shoe assemblies and the rotating shaft are filled with the magnetic liquid, and the mass blocks, the connecting rods, the first bearings, the pole shoe assemblies and the reset pieces are sequentially arranged in the shell in the axial direction. The mass blocks can push the connecting rods and the first bearings to move through centrifugal force under the drive of the rotating shaft, the pole shoe assemblies are further pushed to move towards the diameter increasing side of the transition section, and therefore the sealing gaps between the inner circumferential walls of the pole shoe assemblies and the outer circumferential wall of the transition section can be gradually reduced, the moving space of the magnetic liquid is reduced, and the internal pressure energy is increased. According to the magnetic liquid sealing device, the sealing gaps can be automatically adjusted, and the good sealing effect is achieved under the working condition of the high rotating speed.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering sealing, in particular to a magnetic liquid sealing device. Background technique [0002] Magnetic liquid is a new type of functional material that appears with the development of science and technology. It has the magnetizable properties of magnetic materials and the flowability of liquids. Magnetic liquid sealing technology is used by more and more industries due to its advantages of zero leakage, no wear, long life and simple structure. In the related art, when the magnetic liquid sealing device operates at a high speed, part of the magnetic liquid is likely to leave the surface of the rotating shaft due to centrifugal action, resulting in poor sealing effect. 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] For this reason, the embodiment of the present invention pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 李德才李英松刘霄韩鹏栋任思杰
Owner TSINGHUA UNIV
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