Sealing device for piston

A sealing device and piston technology, applied in the direction of the engine seal, piston, cylindrical piston, etc., can solve the problems of poor sealing performance, oil cylinder leakage, short service life, etc., to achieve long service life, prolong service life, outstanding resistance The effect of high and low temperature performance

Inactive Publication Date: 2017-09-08
柯利佳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Common piston seals generally use Y-shaped seals, bud-shaped seals, etc. After a long time of use, problems such as poor sealing performance and oil cylinder leakage will occur. The seals need to be replaced frequently and the service life is short.

Method used

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  • Sealing device for piston

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Embodiment Construction

[0011] The present invention will be further described now in conjunction with accompanying drawing. These drawings are simplified schematic diagrams only to illustrate the basic structure of the present invention in a schematic way, so they only show the components relevant to the present invention.

[0012] like figure 1 A sealing device for a piston is shown, including a piston 1 and a cylinder 2, the outer surface of the piston 1 is embedded with a support ring 3 and an O-ring 4, and the outer surface of the O-ring 4 is covered with an O-ring 4. A closely connected rectangular ring 5, the outer surfaces of the support ring 3 and the rectangular ring 5 are attached to the inner wall of the cylinder 2.

[0013] The number of supporting rings 3 is two, and the two supporting rings 3 are symmetrically located on both sides of the rectangular ring 5 . The supporting ring 3 is made of polytetrafluoroethylene.

[0014] Inspired by the above-mentioned ideal embodiment according...

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Abstract

The invention relates to a sealing device for a piston, which includes a piston and a cylinder. The outer surface of the piston is embedded with a support ring and an O-ring, and the outer surface of the O-ring is covered with a rectangular ring closely connected with the O-ring. The outer surfaces of the support ring and the rectangular ring are attached to the inner wall of the cylinder. The beneficial effects of the present invention are: the sealing combination has good sealing performance, no sticking tendency and crawling phenomenon, good corrosion resistance, acid and alkali resistance, oil resistance, and outstanding high and low temperature resistance performance, long service life Long, can be used under oil-free lubrication; the support ring can keep the metal surface separation between the piston and the inner hole of the cylinder, thus increasing the radial clearance of the cylinder sealing system; the support ring is a polytetrafluoroethylene ring, which has excellent Wear-resistant and sliding, can effectively protect the sealing ring and prolong the service life.

Description

technical field [0001] The invention relates to a sealing device for a piston. Background technique [0002] Common piston seals generally use Y-shaped seals, bud-shaped seals, etc. After a long time of use, problems such as poor sealing performance and oil cylinder leakage will occur. The seals need to be replaced frequently and the service life is short. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a sealing device for a piston based on the above problems. [0004] The technical solution adopted by the present invention to solve the technical problem is: a sealing device for a piston, including a piston and a cylinder, the outer surface of the piston is embedded with a support ring and an O-ring, and the outer surface of the O-ring is covered with The rectangular ring tightly connected with the O-ring, the outer side of the support ring and the rectangular ring are attached to the inner wall of the cylinder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J1/00F16J15/3248
CPCF16J1/00F16J15/3248
Inventor 柯利佳
Owner 柯利佳
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