A sealing gasket with built-in skeleton and circumferential sealing
A circumferential sealing and gasket technology, applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problems of uneven distribution of gasket tightness, deviation of flange contact surface, affecting sealing effect, etc. Improve strength, good sealing effect, improve sealing effect
Active Publication Date: 2020-09-01
永康市易贝科技有限公司
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Problems solved by technology
[0004] This graphite-metal composite gasket has a wide range of applicability, but the applicant found in use that there are still the following deficiencies: when it is first used, the contact between the flange surface and the sealing gasket is tight, and the sealing effect is good. Finally, the flange contact surface deviates, resulting in uneven distribution of tightness on the gasket. In the case of high internal pressure, leakage occurs in the area with low tightness, which affects the sealing effect
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[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0025] A sealing gasket with a built-in skeleton and circumferential sealing, comprising a gasket body 1 pressed from expanded graphite, a metal skeleton 2 of a regular polygonal structure embedded in the gasket body 1, and a metal skeleton 2 wrapped in the metal skeleton 2 A ring-shaped expansion ring 3 is buried, and several magnets 4 are evenly covered in the expansion ring 3, and the magnets 4 include upper magnets 41 and lower magnets 42 arranged to repel each other, and the upper magnets 41 and the lower magnets 42 The repulsive force forms a void 43 in the expansion ring 3 . In this embodiment, the expansion ring 3 is made of rubber, and may also be made of elastic materials such as resin and plastic. In order to facilitate the manufacture of the expansion ring 3, the expansion ring 3 is composed of an upper expansion ring 31 and a lowe...
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Abstract
A circumferentially-sealed sealing gasket with a built-in skeleton comprises a gasket body formed by pressing expanded graphite, wherein the metal skeleton is embedded into the gasket body. The circumferentially-sealed sealing gasket is characterized in that an annular expansion ring is embedded into the metal skeleton, the expansion ring uniformly coats a plurality of magnets, each magnet comprises an upper magnet and a lower magnet which mutually repel, and gaps are formed in the expansion ring due to repulsive forces between the upper magnets and the lower magnets. The circumferentially-sealed sealing gasket has the following beneficial effects: (1) the metal skeleton taking the shape of a regular polygon is arranged in the sealing gasket, so that the strength of the gasket is improved;and (2) owing to arrangement of the expansion ring, the repulsive forces can be generated, a better sealing effect is provided, and the service life is prolonged.
Description
technical field [0001] The invention belongs to the field of sealing, and in particular relates to a sealing gasket with a built-in skeleton and circumferential sealing for a flange surface. Background technique [0002] The sealing gasket is a kind of seal used in machinery, equipment and pipelines, which isolates the inside and outside and plays a sealing role. According to the material, it can be divided into metal gaskets and non-metal gaskets. Metal gaskets include copper gaskets, stainless steel gaskets, iron gaskets, aluminum gaskets, etc.; non-metal gaskets include asbestos gaskets, non-asbestos gaskets, and paper gaskets. Gaskets, rubber gaskets, etc. [0003] Graphite sealing gaskets are cut or stamped from pure graphite plates or metal (tooth plates, flat plates, nets) reinforced graphite plates. They have many excellent sealing properties, such as: thermal stability, self-lubricating, corrosion resistance, no aging, no hair loss Brittle, etc., can be used stabl...
Claims
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IPC IPC(8): F16J15/00
Inventor 丁水琴黄吉勇
Owner 永康市易贝科技有限公司