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Pneumatic seal ring with irregularly-shaped cross section

A pneumatic sealing and special-shaped cross-section technology, which is applied in the direction of engine sealing, engine components, fluid pressure actuators, etc., can solve the problem that the grease on the sealing working surface cannot be maintained, and achieve the effect of reducing resistance

Active Publication Date: 2014-03-26
北京隆轩橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the working process, the grease on the sealing working surface (cylinder inner wall, piston rod outer wall) is pushed to both ends by the sealing ring, and the grease on the sealing working surface cannot maintain

Method used

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  • Pneumatic seal ring with irregularly-shaped cross section
  • Pneumatic seal ring with irregularly-shaped cross section
  • Pneumatic seal ring with irregularly-shaped cross section

Examples

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] Such as Figure 1 ~ Figure 4 As shown, the present invention provides a special-shaped cross-section pneumatic sealing ring for pistons and piston rods, which includes a sealing lip 1 , a primary sealing lip 2 , a sealing ring root 3 and a secondary sealing lip 4 integrally injected. A groove is formed between the sealing lip 1 and the main sealing lip 2 for fixing a pneumatic sealing ring with a special-shaped section. The root part 3 of the sealing ring is located at the lower part of the sealing lip 1, and the end 5 of the root part 3 of the sealing ring is inclined to the installation groove of the piston or piston rod, so that the two-way sealing on one side of the installation groove can be realized. The end 6 of the main sealing lip 2 is upturned and does not contact the inner wall of the piston cylinder or the outer wall of the piston ...

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Abstract

The invention relates to a pneumatic seal ring with an irregularly-shaped cross section. The pneumatic seal ring comprises a sealing lip, a main sealing lip, a seal ring root portion and an auxiliary sealing lip, wherein the sealing lip, the main sealing lip, the seal ring root portion and the auxiliary sealing lip form a whole through injection molding. A groove is formed between the sealing lip and the main sealing lip, the seal ring root portion is located on the lower portion of the sealing lip, and the tail end of the main sealing lip turns upwards. An arc-shaped face serving as a contact face is arranged at the position, adjacent to the tail end of the main sealing lip, of one side of the main sealing lip, the auxiliary sealing lip is located below the main sealing lip, and the sealing direction of the auxiliary sealing lip is opposite to that of the main sealing lip. Another arc-shaped face serving as a contact face is arranged at the tail end of the auxiliary sealing lip. The pneumatic seal ring can realize bidirectional sealing, and when used in cooperation of other parts, can achieve the purpose of keeping lubrication grease on a seal working face. The pneumatic seal ring can be widely applied to sealing of pistons and piston rods.

Description

technical field [0001] The invention relates to a sealing ring, in particular to a special-shaped cross-section pneumatic sealing ring for sealing the reciprocating motion of a piston and a piston rod. Background technique [0002] Currently, most pneumatic seals are lubricated with grease, which is pre-applied during assembly. During the working process, the grease on the sealing working surface (cylinder inner wall, piston rod outer wall) is pushed to both ends by the sealing ring, and the grease on the sealing working surface cannot be maintained. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a special-shaped cross-section pneumatic sealing ring, which can realize two-way sealing, and cooperate with other parts to realize keeping the lubricating grease on the sealing working surface. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: a speci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/32F15B15/14F16J15/3232
Inventor 于建刚陈时虎
Owner 北京隆轩橡塑有限公司
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