A reciprocating dynamic seal

Abstract

The invention discloses a novel reciprocating-type dynamic sealing element which is made of compressible materials. The sealing element is of a ring-shaped structure. Two circles of saw teeth are arranged on the outer ring face of the sealing element and used for generating two sealing contact faces; a circle of transition groove is formed between the two circles of saw teeth. After the sealing element is installed, the circle of saw teeth close to the sealed mediums are front end saw teeth, the radial height of the front end saw teeth is smaller than that of the rear end saw teeth, a sealing face formed by the front end saw teeth is an auxiliary sealing face, and a sealing face formed by the rear end saw teeth is a main sealing face. The novel reciprocating-type dynamic sealing element can achieve better sealing performance in the reciprocating-movement dynamic sealing state, and therefore on the one hand, interface leakage caused when the sealing element makes reciprocating movement can be reduced, on the other hand, certain self-lubricating capacity is achieved, friction resistance and abrasion conditions caused when the sealing element works can be reduced. Therefore, the sealing performance of the sealing element is improved, and the service life of the sealing element is prolonged. The sealing element is simple and reliable in structure, low in production cost and good in universality.

Description

technical field [0001] The invention relates to the field of seal design, in particular to a novel reciprocating dynamic seal. Background technique [0002] In the industrial field, such as hydraulic equipment, vehicles, reactors and other mechanical equipment containing sealing devices, once leakage occurs, it will cause a lot of waste of energy and raw materials, the equipment cannot work normally, and the equipment will be scrapped, the system will be paralyzed and Casualties and other major accidents occurred. Therefore, the problems in the design and manufacture of the seal have attracted people's attention. [0003] In hydraulic transmission, pneumatic components and systems, reciprocating motion seal is the most common seal. Based on the importance of sealing, the sealing performance requirements of reciprocating seals in the industrial field are also getting higher and higher. In reciprocating motion seals, commonly used seals are: O-ring, Y-ring, V-ring, U-ring, ...

AI Technical Summary

Problems solved by technology

The current problem is that some of these sealing rings are not suitable for high-pressure and high-speed reciprocating motion, such as O-rings, Y-rings and L(J)-rings, etc., which are prone to failures such as excessive wear or leakage under high pressure ; Some are not suitable for high-speed reciprocating motion, such as V-shaped rings, U-shaped rings, and bud-shaped rings. Under high-speed conditions, excessive friction will occur, causing excessive wear and tear, leading to premature failure of the seals

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