Reciprocating sealing device

A technology of sealing device and sealing body, which is applied in the direction of engine components, piston rings, mechanical equipment, etc., can solve the problems of short service life, poor self-sealing performance, and limited service life, and achieve long service life, good self-sealing performance, The effect of reducing the loss of downtime

Inactive Publication Date: 2013-05-08
盛土根
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the Yx-ring sealing structure and coaxial sealing device are widely used in hydraulic cylinder sealing technology. The former is relatively poor in wear resistance and short in service life due to the material limitation of the Yx-ring; the latter has relatively poor self-sealing performance. Poor, the compensation ability of the contact element after wear is low, which limits its service life. At the same time, because the contact element and the elastic element of the coaxial sealing device must be overlapped and installed in the sealing groove to work, it is difficult to install and disassemble. Difficult to meet usage requirements

Method used

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  • Reciprocating sealing device

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Embodiment Construction

[0013] The present invention is described below in conjunction with accompanying drawing.

[0014] attached figure 1 It is a reciprocating sealing device according to the present invention, which includes a cylinder body 1 and a piston 2. The piston 1 is provided with a sealing groove; the sealing groove is provided with a sealing inner ring 3; the sealing inner ring 3 Both ends are mirrored with a support ring 4 and a guide ring 5; the support ring 4 is arranged between the guide ring 5 and the sealing inner ring 3; the support ring 4 is provided with a sealing body 6 with a groove 7; the The guide ring 5 has a small hole 8, which can introduce pressure oil into the inner side of the guide ring 5; the material of the support ring 4 is nitrile rubber; the guide ring 5 is made of polytetrafluoroethylene. If the high-pressure oil pushes the piston 2 to the right from the left side, the pressure oil enters the inner side of the guide ring 5 and makes it closely contact with the ...

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Abstract

The invention discloses a reciprocating sealing device which comprises a cylinder and a piston and is characterized in that a seal trough is arranged on the piston, and a sealing inner ring is arranged in the seal trough. A supporting ring and a guide ring are respectively arranged at two ends of the sealing inner ring in mirroring mode, the supporting ring is arranged between the guide ring and the sealing inner ring, a sealing body with a groove is arranged on the supporting ring, a small hole is arranged on the guide ring, and the supporting ring is made of Buna-N rubber. The reciprocating sealing device is good in self sealing performance and long in service life, can greatly reduce loss caused by shutdown and production halts due to hydraulic cylinder replacement or sealing easily-damaged part replacement, and is especially suitable for working for a long time in working conditions of high pressure overloading or unbalance loading in metallurgy and other industries.

Description

[0001] technical field [0002] The invention relates to a sealing device, in particular to a reciprocating sealing device using gas or liquid as a medium, and belongs to the technical field of engineering components. Background technique [0003] At present, the Yx-ring sealing structure and coaxial sealing device are widely used in hydraulic cylinder sealing technology. The former is relatively poor in wear resistance and short in service life due to the material limitation of the Yx-ring; the latter has relatively poor self-sealing performance. Poor, the compensation ability of the contact element after wear is low, which limits its service life. At the same time, because the contact element and the elastic element of the coaxial sealing device must be overlapped and installed in the sealing groove to work, it is difficult to install and disassemble. Difficult to meet usage requirements. Contents of the invention [0004] In view of the above technical problems, the pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J9/08F16J9/12F16J9/28
Inventor 盛土根
Owner 盛土根
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