Magnetic source embedded type series connection type stepped shaft magnetofluid sealing device

A magnetic fluid seal, stepped shaft technology, applied in the direction of engine seals, engine components, mechanical equipment, etc., can solve the problem of low pressure resistance, improve pressure resistance and sealing reliability, shorten length, and reduce losses. Effect

Inactive Publication Date: 2018-12-18
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a magnetic source embedded series magnetic fluid sealing device, so as to solve the problem of low pressure resistance existing in the existing sealing device, so that the sealing technology can be successfully applied to the environment of large diameter and high speed and heavy load middle

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  • Magnetic source embedded type series connection type stepped shaft magnetofluid sealing device

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with accompanying drawing.

[0028] Such as figure 1 As shown, in the magnetic source embedded series-type stepped shaft magnetic fluid sealing device, the corresponding stepped shaft 1 has the largest diameter of the middle shaft, and the diameter of the secondary shaft on the left side of the middle shaft decreases from right to left, and the right side of the middle shaft The diameters of the secondary shafts on the sides decrease in order from left to right;

[0029] Including shell 2, left pole shoe ring 3, middle pole shoe ring 4, right pole shoe ring 5, permanent magnet ring I6, permanent magnet ring II7, permanent magnet ring III8, permanent magnet ring IV9;

[0030] The left pole shoe ring 3, the middle pole shoe ring 4, the right pole shoe ring 5, the permanent magnet ring I6, and the permanent magnet ring II7 are arranged on the inner wall of the housing 2; the permanent magnet ring I6 is l...

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Abstract

The invention relates to a magnetic source embedded type series connection type stepped shaft magnetofluid sealing device. According to the magnetic source embedded type series connection type steppedshaft magnetofluid sealing device, for a corresponding stepped shaft, the diameter of a middle shaft is maximum, the diameters of secondary shafts on the left side of the middle shaft are sequentially reduced from right to left, and the diameters of secondary shafts on the right side of the middle shaft are sequentially reduced from left to right. The magnetic source embedded type series connection type stepped shaft magnetofluid sealing device comprises an outer shell, a left pole shoe ring, a middle pole shoe ring, a right pole shoe ring, a permanent magnet ring I, a permanent magnet ring II, a permanent magnet ring III and a permanent magnet ring IV. According to the magnetic source embedded type series connection type stepped shaft magnetofluid sealing device, the difficulty that an existing sealing device is relatively low in pressure resisting performance can be solved, the sealing technology is successfully applied to a large-diameter and high-speed and heavy load environment and the like.

Description

technical field [0001] The invention belongs to the field of mechanical engineering seals, in particular to a magnetic source embedded series-type stepped shaft magnetic fluid seal device. Background technique [0002] When the ferrofluid seal technology is applied in the large diameter, high speed and heavy load sealing environment, the ferrofluid in the seal gap often fails because the seal gap is too large, so improving the pressure resistance of the ferrofluid seal with a large gap is a hot topic in current research one. [0003] One of the methods to improve the pressure resistance performance of the magnetic fluid seal under large gaps is to improve the structure of the magnetic fluid seal, such as the sealing device described in reference 1 (the patent with publication number CN 103115152A). Although the sealing device described in the above literature has greatly improved the sealing performance compared with ordinary magnetic fluid, its sealing performance still ca...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F16J15/43
Inventor杨小龙郝付祥黄光永
OwnerGUANGXI UNIVERSITY OF TECHNOLOGY