self-relieving seal
A sealing device and self-relieving technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem that the sealing ring cannot meet the self-relieving pressure, and achieve the effect of prolonging the life
Inactive Publication Date: 2017-09-29
北京裕泰行机械技术有限公司
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Problems solved by technology
[0003] Most of the sealing rings in the prior art use spring energy storage seals, but this type of sealing ring can only play a simple sealing role and cannot perform pressure relief. Under some special conditions of use, such as the ball valve seat in the valve industry requires sealing At the same time, it also needs to be able to release pressure, and the sealing ring of the prior art cannot meet the situation of self-relieving pressure, so there is an urgent need for a sealing device that can not only play a sealing role but also self-release pressure
Method used
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Embodiment Construction
[0019] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0020] according to figure 1 , the present invention provides a self-relieving sealing device, including: lip ring body 1, metal elastic part 2 and support ring 3, lip ring body 1 includes: inner lip 11 and outer lip 12, inner lip 11 and outer lip There is an annular recess 13 between the lips 12, the shape of the side of the inner lip 11 and the outer lip 12 away from the annular recess 13 is arc-shaped, the metal elastic part 2 is arranged in the annular recess 13, and one end of the support ring 3 Extending into the annular recess 13 and contacting the metal elastic part 2, the other end of the support ring 3 protrudes out of the annular recess 13, and the side of the support ring 3 away from the annular recess 13 is provided with a pressure relief groove 31 for pressure relief , through the above-mentioned structure, the above-mentioned sel...
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The invention discloses a sealing device capable of relieving pressure automatically, which not only can play a forward sealing role, but also can relieve the pressure of a system or a medium in the reverse direction to meet application under some special working conditions. The sealing device capable of relieving pressure automatically comprises a lip-shaped circle body, a metal elastic part and a supporting ring, wherein the lip-shaped circle body comprises an inner lip and an outer lip; an annular concave part is arranged between the inner lip and the outer lip; the side, away from the annular concave part, of the inner lip and the outer lip is arc-shaped; the metal elastic part is arranged inside the annular concave part; one end of the supporting ring extends into the annular concave part and is in contact with the metal elastic part, and the other end of the supporting ring extends outside the annular concave part; a pressure relieving groove for relieving pressure is arranged on the side, away from the annular concave part, of the supporting ring.
Description
technical field [0001] The invention relates to the field of seals, in particular to a self-relieving pressure sealing device. Background technique [0002] As a common mechanical part, sealing ring is widely used in all walks of life, mainly to prevent liquid or gas leakage. [0003] Most of the sealing rings in the prior art use spring energy storage seals, but this type of sealing ring can only play a simple sealing role and cannot perform pressure relief. Under some special conditions of use, such as the ball valve seat in the valve industry requires sealing At the same time, it also needs to be able to release pressure, and the sealing ring of the prior art cannot meet the situation of self-relieving pressure, so there is an urgent need for a sealing device that can not only play a sealing role but also self-release pressure. Contents of the invention [0004] In order to solve the above problems, the present invention provides a self-relieving pressure sealing devic...
Claims
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IPC IPC(8): F16J15/3232
CPCF16J15/3232
Inventor 由鑫赵京龙梅俊杰张戈丁燕来闫志强
Owner 北京裕泰行机械技术有限公司