Sealing structure of tapered slip ring with self-compensating property

Abstract

The invention discloses a sealing structure of a tapered slip ring with a self-compensating property, which comprises a tapered slip ring, an O-ring, a cylinder barrel and a shaft sleeve, wherein the O-ring is arranged in a sealing ring groove of the cylinder barrel; a mobile annular retaining ring is arranged between the O-ring; the tapered slip ring is arranged between the cylinder barrel and the shaft sleeve and the cross section is a right triangle; an elastic element is arranged on the end face of the slip ring; the tapered slip ring moves rightward along the inclined plane of the shaft sleeve under the action of the elastic element and the internal pressure; the O-ring is extruded when the slip ring moves rightward; the deformed O-ring reacts on the slip ring as the diameter compression ratio of the cross section changes along with the internal pressure of a sealing cavity; and the contact pressure on the dynamic sealing surface of the slip ring is wavy to form serrated sealing effect. The sealing structure has simple structure, low cost and good sealing performance. The wear loss can be automatically compensated by the tapered slip ring, the problem of wear is fundamentally solved, the stress condition of the O-ring is improved, and the service life of the O-ring is prolonged.

Description

technical field [0001] The invention relates to the technical field of dynamic sealing devices, in particular to a self-compensating tapered slip ring sealing structure. Background technique [0002] With the development of industrial technology, the application field of mechanical seals has been continuously expanded. Not only the pump valves are used, but also various process equipment (reactors, agitators, etc.) are also widely used, and the use environment tends to be extreme. High temperature, large diameter), high performance (dry running, zero leakage, slag slurry, etc.) are continuously improved. The traditional mechanical seal structure is difficult to meet the requirements of the process. [0003] The existing slip ring combination seal structure (such as square coaxial seal, C-shaped slip ring combination seal, right angle slip ring combination seal, stepped coaxial seal, tooth-shaped slip ring combination seal and foot-shaped slip ring combination Sealing, etc....

AI Technical Summary

Problems solved by technology

Both the thinning design of the slip ring and the design of reducing the contact area with the sliding surface increase the influence of wear. With the increase of the wear of the slip ring, the thickness of the slip ring between the O-ring and the sliding surface shows a monotonous trend of thinning. changes, resulting in a gradual decline in the sealing effect

[0007] 2. The use method of O-ring is easy to shorten its service life

The cross-sectional diameter compression rate of the O-ring is in a constant state from the beginning of installation. When the pre-compression is large, the O-ring will always be in a high compression state, and the material is prone to aging and insufficient elasticity, resulting in a decrease in sealing effect.

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