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Sealing method for split type magnetic liquid sealing device

A magnetic liquid and sealing device technology, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve problems such as uneven application and affecting sealing performance, and achieve the effect of improving sealing reliability and ensuring sealing

Inactive Publication Date: 2012-07-04
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing large-diameter magnetic liquid rotary sealing device applies sealant on the joint surface of the two-lobe structure, and after installation, the excess sealant is often squeezed out, leaving the inner circle of the pole shoe. On the pole teeth, the uneven coating at the same time affects the sealing performance

Method used

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  • Sealing method for split type magnetic liquid sealing device
  • Sealing method for split type magnetic liquid sealing device
  • Sealing method for split type magnetic liquid sealing device

Examples

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Embodiment Construction

[0021] A sealing method for a split-valve magnetic liquid sealing device, the sealing method comprising:

[0022] Buckle the two halves of the shell on the shaft to be sealed, connect the two halves of the shell with bolts and nuts, and apply sealant on the joint surface to form the shell 1;

[0023] Fasten the two halves of the pole shoe on the shaft to be sealed, connect the two halves of the pole shoe with bolts and nuts, and apply sealant on the joint surface to form the left pole shoe 2;

[0024] Fasten the other two halves of the pole shoe on the shaft to be sealed, connect the two halves of the pole shoe with bolts and nuts, and apply sealant on the joint surface to form the right pole shoe 4;

[0025] Insert the first rubber sealing ring 8 into the concave groove on the outer surface of the left pole piece 2, and insert the second rubber sealing ring 7 into the concave groove on the outer surface of the right pole piece 4;

[0026] The left pole shoe 2 with the rubber...

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Abstract

A sealing method for split type magnetic liquid sealing device belongs to the field of mechanical engineering sealing, and solves the problems that as the present large-diameter magnetic liquid rotation sealing device applies sealant at the jointed surface of a two-flap structure, the redundant sealant is extruded out after installation and remains on pole teeth at the inner circles of pole shoes, and uneven application influences the sealing performance at the same time. The sealing method is realized as follows: a stainless steel sheet is heated and kept at a temperature between 300 DEG C and 35 DEG C; the stainless steel sheet is stuck into a clearance between a sealing shaft and the pole teeth of the pole shoes; the stainless steel starts from a point at the jointed clearance between two half-pole shoes, and moves along the circumferences of the half-pole shoes to return the start point, so that the sealant extruded from the jointed surfaces of the pole shoes is vaporized; the thickness of the stainless steel sheet is smaller than the clearance between the sealing shaft and the pole teeth of the pole shoes, so as to enable the stainless steel sheet to stick into the clearance; a medical injector is used for sucking magnetic liquid at the jointed clearance between the two half-casings of the split type magnetic liquid sealing device, and the injector starts from a point at the jointed clearance, and continuously injects the magnetic liquid along the circumferences till returning the start point.

Description

technical field [0001] The invention belongs to the field of mechanical engineering sealing. Background technique [0002] The shell and the pole piece in the existing large-diameter magnetic liquid sealing device usually adopt a split structure. Apply enough sealant on the joint surface of their respective two petal structures to ensure the sealing ability of the joint surface. However, due to the poor control of the amount of sealant applied, the excess sealant will often be squeezed out after installation and remain on the pole teeth of the inner circle of the pole shoe. At the same time, the uneven application will affect the sealing performance. Contents of the invention [0003] The technical problem to be solved by the present invention is that the existing large-diameter magnetic liquid rotary sealing device applies sealant on the joint surface of the two-lobe structure, and after installation, the excess sealant is often squeezed out, leaving the inner circle of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/43
Inventor 李德才钱乐平
Owner BEIJING JIAOTONG UNIV
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