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Axle sealing oil-seal and seal lip material thereof

A shaft seal and sealing lip technology, applied in the field of shaft sealing devices, can solve the problems of oil seal damage, easy damage or peeling of polytetrafluoroethylene sealing lip, leakage of lubricating oil, etc., and achieves firm assembly, good automatic compensation ability, and high temperature resistance. And the effect of strong chemical corrosion ability

Inactive Publication Date: 2007-08-22
芦贵书
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For oil seals with this structure, the PTFE sealing lip is easily damaged or peeled off during assembly and operation, resulting in damage to the oil seal and leakage of lubricating oil

Method used

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  • Axle sealing oil-seal and seal lip material thereof
  • Axle sealing oil-seal and seal lip material thereof

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Experimental program
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Effect test

Embodiment Construction

[0028] Fig. 1 is the structural representation of the present invention, and the novel shaft sealing oil seal of the present invention comprises rubber body 1, skeleton 3, polytetrafluoroethylene sealing lip 2 and auxiliary lip; Suspended polytetrafluoroethylene resin 75%, polyparaben 10%, glass fiber 10%, chromium oxide 5% new filled polytetrafluoroethylene, this new material has good self-lubricating performance, high temperature resistance and The chemical corrosion ability is strong; the material of the skeleton 3 is metal iron with phosphating treatment on the surface; the end of the sealing lip 2 is bent outward, and the bent end is pressed between the rubber body 1 and the skeleton 3, and the skeleton 3 And sealing lip 2 and rubber body 1 are vulcanized and integrated, and the contact surface of sealing lip 2 and rubber body 1 is chemically treated with sodium and ammonia solution or naphthalene and sodium complex before vulcanization molding to make them firmly bonded ...

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Abstract

The present invention discloses a new-type shaft seal oil-seal and material for making said oil-seal sealing lip. The oil-seal sealing lip is made up by adopting polytetrafluoroethylene material in which the polyphenyl ester, glass fibre and dichromium trioxide are filled or poly-p-hydroxybenzoate, glass fibre and dichromium trioxide are filled, the bent end portion of said sealing lip is press-combined between the rubber body and skeleton, said skeleton, sealing lip and rubber body are vulcanized and formed into one whole body, the sealing lip is set on the rubber body. Said oil seal has high self-lubricating property, and possesses high-temperature resistance and chemical corrosion resistance.

Description

technical field [0001] The invention relates to a shaft sealing device, in particular to a new type of shaft sealing oil seal, and also relates to the material used to manufacture the sealing lip of the oil seal. Background technique [0002] Shaft seal oil seals are indispensable components in various engines, gearboxes in the mechanical field, crankcases and other devices that require lubrication. In the prior art, the commonly used oil seal is composed of a metal skeleton, a rubber part with a sealing lip and a spring. The elasticity of the spring and the rubber itself makes the sealing lip and the shaft tightly contact to prevent the leakage of lubricating oil. , Play an automatic compensation role after the sealing lip is worn. Due to the large friction coefficient and high elastic modulus of the rubber itself, with the high-speed operation of the shaft and the change of the high and low temperature working environment, the shaft will be tightly hugged so that there is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/32F16J9/28F16J15/3232
Inventor 芦贵书李俊
Owner 芦贵书
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