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Multi-magnetic-source stepped shaft type magnetofluid sealing device

A magnetic fluid seal and stepped shaft technology, which is applied in the direction of engine seals, ball bearings, engine components, etc., can solve the problem of low pressure resistance

Inactive Publication Date: 2021-09-07
BEIJING JIAOTONG UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to provide a multi-magnetic source stepped shaft type magnetic fluid sealing device, so as to solve the problem of low pressure resistance existing in the existing single magnetic source magnetic fluid sealing device, and the processing is simple and the assembly is convenient, so that the sealing technology Successfully used in high-speed heavy-duty and other fields

Method used

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  • Multi-magnetic-source stepped shaft type magnetofluid sealing device

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with accompanying drawing.

[0035] Such as figure 1 As shown, the multi-magnetic source stepped shaft type magnetic fluid sealing device includes a housing 1, a left pole shoe ring 5, a left permanent magnet ring 6, a left pole gear ring 7, a permanent magnet ring 8, a right pole gear ring 9, Right permanent magnet ring 10, right pole shoe ring 12;

[0036] The inner circular surface of the left pole shoe ring 5 is divided into the left inner circular surface 32 of the left pole shoe ring, the inner circular surface 30 of the left pole shoe ring and the right inner circular surface 29 of the left pole shoe ring. Ring left inner circular surface 32, inner inner circular surface 30 of left pole shoe ring and left pole shoe ring right inner circular surface 29 are opposite and arranged alternately; 33 corresponds to and maintains a distance, the inner circular surface 30 of the left pole shoe ring corr...

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Abstract

The invention relates to a multi-magnetic-source stepped shaft type magnetofluid sealing device which is composed of one or more magnetofluid sealing units. Each magnetofluid sealing unit comprises a shell, a left pole shoe ring, a left permanent magnet ring, a left pole gear ring, a permanent magnet ring, a right pole gear ring, a right permanent magnet ring and a right pole shoe ring. The multi-magnetic-source stepped shaft type magnetofluid sealing device can solve the problem that an existing single-magnetic-source magnetofluid sealing device is low in pressure resistance. Machining is easy, assembling is convenient, and therefore the sealing technology is successfully applied to the fields of high speed, heavy loads and the like.

Description

technical field [0001] The invention belongs to the field of mechanical engineering seals, and in particular relates to a multi-magnetic source stepped shaft type magnetic fluid seal device. Background technique [0002] With the development of the economy, the vacuum equipment at home and abroad has developed rapidly. In many rotary sealing devices, magnetic fluid sealing technology has been widely used, such as sealing of vacuum equipment, high temperature and high pressure equipment and equipment with high environmental requirements, in order to improve product quality and obtain good economic benefits . However, as the speed of the transmission shaft increases, the performance of the magnetic fluid seal gradually decreases or even fails. Therefore, improving the pressure resistance of the magnetic fluid seal at high speeds is a hot issue today. [0003] Therefore, improving the structure of the magnetic fluid seal is used as a method to improve the pressure resistance ...

Claims

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Application Information

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IPC IPC(8): F16J15/43F16C19/02
CPCF16J15/43F16C19/02
Inventor 章永文李德才
Owner BEIJING JIAOTONG UNIV
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