Convex arc type magnetic fluid sealing device

A magnetic fluid sealing, convex arc technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem of low pressure resistance, and achieve the improvement of pressure resistance, expand the safe working range, and reduce losses. Effect

Active Publication Date: 2018-04-13
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a convex arc type magnetic fluid sealing device, so as to solve the problem of low pressure r

Method used

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  • Convex arc type magnetic fluid sealing device
  • Convex arc type magnetic fluid sealing device

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] see Figure 1-2 , a convex arc magnetic fluid sealing device, including a shaft 1, a housing 2, a pole shoe 6, a magnetic fluid and a permanent magnet 8, characterized in that the shaft 1 passes through and extends beyond both ends of the housing 2 , the part of the shaft 1 located in the housing 2 has at least one ring 9, the outer circular surface of the ring 9 is in the shape of a convex arc, and the inner surface of the housing 2 is provided with at least two pole shoes 6. A ring-shaped permanent magnet 8 is arranged between two adjacent pole pieces 6. The pole piece 6 is an annular structure, and the inner circular surface of the pole piece 6 between the ring 9 and the housing 2 It is in a concave arc shape, and the magnetic fluid is arranged in the sealing gap between the pole shoe 6 and the shaft 1 . figure 1 shows the case where the shaft 1 h...

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Abstract

The invention discloses a convex arc type magnetic fluid sealing device which comprises a shaft, a shell, pole shoes, magnet fluid and permanent magnets. The convex arc type magnetic fluid sealing device is characterized in that the shaft penetrates and extends out of the two ends of the shell; the part, located in the shell, of the shaft is provided with at least one circular ring; the outer circumferential faces of the circular rings are in a convex arc shape; at least two pole shoes are arranged on the inner surface of the shell; the part between every two adjacent pole shoes is provided with the corresponding annular permanent magnet; the pole hoes are of circular-ring-shaped structures; the inner circumferential faces of the pole shoes located between the circular rings and the shellare in a concave arc shape; and the magnetic fluid is arranged in sealing clearances between pole teeth and the shaft. By means of the convex arc type magnetic fluid sealing device, the sealing pressure-resisting capability of the magnetic fluid is greatly improved, and the problem that an existing sealing device cannot meet the requirement for high sealing performance under special conditions such as high speeds and heavy loads is solved.

Description

technical field [0001] The invention belongs to the field of mechanical engineering sealing, and in particular relates to a convex-arc magnetic fluid sealing device capable of maintaining good sealing performance under high-speed and heavy-load working conditions. Background technique [0002] Compared with the traditional mechanical seal, the magnetic fluid seal has its unique advantages. It realizes a leak-free and wear-free seal, and can be used in high-speed rotating conditions. Within the range and under static and dynamic conditions, it can basically achieve a completely leak-free seal; under the condition of magnetic fluid seal, there is no direct contact between the moving part and the static part, which belongs to the non-contact seal, no mechanical wear, and has a long service life. The magnetic fluid is easy to replenish; the seal has lubricating effect at the same time, so there is no need for an external lubrication system; both sides of the seal can be pressuri...

Claims

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Application Information

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IPC IPC(8): F16J15/43
CPCF16J15/43
Inventor 杨小龙陈帆孙彭郝付祥何美丽
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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