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A magnetic liquid sealing device

A sealing device and magnetic liquid technology, applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of easy failure, long magnetic circuit, difficult application, etc., to achieve the effect of enhancing the magnetic field strength and shortening the magnetic circuit

Active Publication Date: 2022-02-01
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The magnetic liquid seal has the advantages of zero leakage, long life and low friction, and is widely used in the field of sealing. It is easy to fail under the environment, and the ordinary magnetic liquid sealing device is difficult to apply to high-speed occasions, so a high-speed magnetic liquid sealing device is proposed

Method used

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  • A magnetic liquid sealing device
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  • A magnetic liquid sealing device

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Embodiment Construction

[0013] The present invention will be further described with accompanying drawing as specific embodiment:

[0014] A magnetic liquid seal such as figure 1 , the device consists of: housing (1), left bearing (2), left pole shoe ring (3), left spacer magnetic ring (4), sealing ring I (5), middle spacer magnetic ring (6), sealing ring Ⅱ (7), right pole shoe ring (8), right magnetic spacer ring (9), right bearing (10), end cover (11), non-magnetic shaft (12), non-magnetic ring I (13), Non-magnetic ring II (14), non-magnetic ring III (15), annular permanent magnet I (16), annular permanent magnet II (17), sealing ring III (18), and shaft sleeve (19).

[0015] It constitutes the connection between each part of the device: the sealing ring I is installed in the groove on the outer surface of the left pole shoe ring to form a left pole shoe ring with a sealing ring; the sealing ring II is installed on the right pole shoe ring In the groove of the outer circular surface, the right pol...

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PUM

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Abstract

The magnetic liquid sealing device of the invention belongs to the field of mechanical engineering sealing. The device consists of: shell, left bearing, left pole shoe ring, left spacer magnetic ring, sealing ring I, middle spacer magnetic ring, sealing ring II, right pole shoe ring, right spacer magnetic ring, right bearing, end cover, not Magnetic shaft, non-magnetic ring Ⅰ, non-magnetic ring Ⅱ, non-magnetic ring Ⅲ, annular permanent magnet Ⅰ, annular permanent magnet Ⅱ, sealing ring Ⅲ, shaft sleeve. The magnetic circuit is shortened by placing two ring-shaped permanent magnets in series on the disc-shaped magnetic source assembly and matching with the horseshoe-shaped space formed by the left pole shoe ring, the middle spacer magnetic ring, and the right pole shoe ring, and the magnetic field of the sealed gap is enhanced. . Under high-speed working conditions, centrifugal force is used to throw the magnetic liquid into and fill the circular space with a trapezoidal cross-section formed by the outer surface of the disc-shaped magnetic source assembly, the left pole shoe ring, the middle spacer magnetic ring, and the right pole shoe ring, forming a magnetic The liquid sealing ring ensures the sealing performance under high-speed working conditions.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering sealing, and is particularly suitable for the high-speed rotary sealing field. Background technique [0002] The magnetic liquid seal has the advantages of zero leakage, long life and low friction, and is widely used in the field of sealing. It is easy to fail under the environment, and the ordinary magnetic liquid sealing device is difficult to apply to high-speed occasions, so a high-speed magnetic liquid sealing device is proposed. Contents of the invention [0003] The object of the present invention is to provide a magnetic liquid sealing device with simple structure, high reliability and high speed resistance. [0004] The technical scheme adopted in the present invention is: [0005] A high-speed resistant magnetic liquid sealing device, the device includes: a casing (1), a left bearing (2), a left pole shoe ring (3), a left spacer magnetic ring (4), a sealing ring I (5),...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 何新智王志斌刘思佳李德才
Owner BEIJING JIAOTONG UNIV