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Magnetic liquid rotary sealing device

A magnetic liquid and rotary sealing technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of high manufacturing cost, high processing and assembly precision requirements, and achieve the effect of improving processing and assembly technology and reducing manufacturing cost

Inactive Publication Date: 2013-06-12
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing magnetic liquid rotary sealing device needs to process the pole teeth on the pole shoe or the shaft sleeve, which requires high processing and assembly precision and high manufacturing cost

Method used

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  • Magnetic liquid rotary sealing device

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Embodiment Construction

[0017] The present invention will be further described with accompanying drawing as specific embodiment:

[0018] A magnetic liquid rotary sealing device, such as figure 1 , the sealing device includes: retaining ring 1, housing 3, left rolling bearing 4, first magnetic isolation ring 5, first rubber sealing ring 6, permanent magnet 7, second rubber sealing ring 8, second magnetic isolation ring 9, right Rolling bearing 10, end cover 11, second adjusting gasket 12, screw 13, right pole shoe 14, left pole shoe 15, shaft sleeve 16, first adjusting gasket 17, sealing ring 18, screw 19.

[0019] Composition of the device includes:

[0020] The first rubber sealing ring 6 is installed in the groove of the outer circle of the left pole shoe 15 to form a left pole shoe with a rubber sealing ring, and the second rubber sealing ring 8 is installed in the groove of the outer circle of the right pole shoe 14 , forming the right pole shoe with rubber seal; the connections between the pa...

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Abstract

The invention relates to a magnetic liquid rotary sealing device, which belongs to the field of mechanical engineering sealing, and solves the problems of the existing sealing device that the machining and assembling precision is too high and the cost is increased because pole teeth are machined on a pole shoe or a shaft sleeve. The device is characterized in that a left rolling bearing, a first isolation magnetic ring, a left pole shoe with a rubber sealing ring, a permanent magnet, a right pole shoe with a rubber sealing ring, a second isolation magnetic ring and a right rolling bearing are installed in a shell and connected with threads on the shell through screws, and an end cover is fixed on the shell; magnetic liquid is filled in the shell; the shaft sleeve with a second adjusting pad is installed in an inner hole of the assembly; and a first adjusting pad is closely attached to a left end surface of the left rolling bearing, a retainer ring is closely attached to the left end surface of the shaft sleeve, and the retainer ring is connected with the shaft sleeve through a screw. Two end surfaces of the permanent magnet are machined into a zigzag shape, the magnetic field gradient needed by sealing part of the magnetic liquid is formed according to the shape of the magnet, and the machining and assembling process is improved.

Description

technical field [0001] The invention belongs to the field of mechanical engineering sealing. Background technique [0002] Magnetic liquid sealing technology has been gradually used by more and more industries due to its advantages of zero leakage, no wear, long life, easy maintenance and simple structure. Typical structures of existing magnetic liquid rotary sealing devices are described in patent applications with publication numbers CN 102518811A and CN 202091519U. [0003] The connections between the various parts constituting the device are as follows: insert the first rubber sealing ring into the concave groove on the outer circumference of the left pole shoe to form a left pole shoe with a rubber sealing ring, and insert the second rubber ring into the right pole shoe A right pole shoe with a rubber sealing ring is formed in the concave groove on the outer circumference. Put the left rolling bearing, the first magnetic isolation ring, the left pole piece with rubber...

Claims

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Application Information

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IPC IPC(8): F16J15/43
Inventor 李德才姚杰
Owner BEIJING JIAOTONG UNIV
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