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Magnetic liquid sealing device

A magnetic liquid and sealing device technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of magnetic liquid seals not working properly, equipment not running normally, etc., to prevent axial displacement, reduce starting torque, The effect of reducing the injection volume

Inactive Publication Date: 2021-01-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The starting torque of the magnetic liquid seal may exceed the torque range that the equipment can provide, which will cause the equipment to fail to operate normally and the magnetic liquid seal to fail to work normally

Method used

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Embodiment Construction

[0025] 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.

[0026] Such as figure 1 and figure 2 As shown, the magnetic liquid sealing device according to the embodiment of the present invention includes a housing 1 , a rotating shaft 2 , a shaft sleeve 3 , a first pole piece 4 , a second pole piece 5 , a permanent magnet 6 and an end cover 7 .

[0027] The housing 1 has a chamber inside. Such as figure 1 As shown, the left end of the housing 1 is provided with a flange part 101, and the flange part 101 is provided with a plurality of threaded holes, and the flange part 101 is suitable for connecting with external equipment.

[0028] The rotating shaft 2 is rotatably arranged in the chamber. Such as figure 1 As sho...

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Abstract

The invention discloses a magnetic liquid sealing device. The magnetic liquid sealing device comprises a shell, a rotating shaft, a shaft sleeve, a first pole shoe, a second pole shoe, a permanent magnet and an end cover, wherein a cavity is formed in the shell; the rotating shaft is rotatably arranged in the cavity; the shaft sleeve is arranged on the rotating shaft in a sleeving mode; a plurality of protrusions are arranged on the periphery of the shaft sleeve and arranged in the axial direction of the rotating shaft at intervals; the first pole shoe and the second pole shoe are arranged inthe axial direction of the rotating shaft at intervals; a plurality of first pole teeth are arranged on the inner circumferences of the first pole shoe and arranged in the axial direction of the rotating shaft at intervals; the plurality of first pole teeth and the plurality of protrusions are oppositely arranged in the radial direction of the rotating shaft; a plurality of second pole teeth are arranged on the inner circumference of the second pole shoe and arranged in the axial direction of the rotating shaft at intervals; the plurality of second pole teeth and the plurality of protrusions are oppositely arranged in the radial direction of the rotating shaft; one end of the shaft sleeve is connected to the end cover; and the permanent magnet surrounds the rotating shaft and is arranged between the first pole shoe and the second pole shoe. The magnetic liquid sealing device can reduce a sealing gap, the injection amount of magnetic liquid, and the magnetic liquid seal starting torque.

Description

technical field [0001] The invention relates to the technical field of liquid sealing, in particular to a magnetic liquid sealing device. Background technique [0002] The starting torque of the magnetic liquid seal is the maximum torque input by the rotating shaft when the rotating shaft enters a stable state from a static state. The starting torque of the magnetic liquid seal is related to the injection amount of the magnetic liquid. The larger the injection amount of the magnetic liquid, the larger the actual contact surface area between the magnetic liquid and the rotating shaft at the seal gap, and the greater the starting torque that the magnetic liquid seal needs to overcome when starting. . The starting torque of the magnetic liquid seal may exceed the torque range that the equipment can provide, which will cause the equipment to fail to operate normally and the magnetic liquid seal to fail to work normally. Contents of the invention [0003] The present inventio...

Claims

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Application Information

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IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 李德才赵云翔杨晟
Owner TSINGHUA UNIV
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