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A butterfly valve elastic metal sealing ring and its processing technology

A technology of metal sealing ring and elastic metal, which is applied in the direction of lifting valves, valve devices, mechanical equipment, etc., can solve the problems of metal sealing surface scratches, sealing performance degradation, elastic decline, etc., and achieve good reliability of elastic compensation and two-way sealing High performance and consistent results

Active Publication Date: 2021-03-30
KEKE VALVE ZHEJIANG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the metal sealing ring of the triple eccentric metal sealing butterfly valve produced at home and abroad generally adopts an integral structure or a J-shaped elastic ring structure. The metal sealing ring of the integral structure has no elasticity, and the forced sealing between the metal sealing ring and the valve seat can only be realized simply. One-way sealing, full-pressure sealing cannot be achieved in the reverse direction, and the metal sealing ring has no elastic compensation. After the valve is opened and closed several times, the metal sealing surface is scratched to cause leakage, and the sealing effect is not ideal.
The metal sealing ring with J-shaped elastic ring structure is generally made of steel plate through pressing process. It has low rigidity and poor pressure resistance. During use, its elasticity will gradually decrease, or even lose its elasticity, resulting in a decrease in sealing performance. leakage

Method used

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  • A butterfly valve elastic metal sealing ring and its processing technology

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Embodiment Construction

[0023] Such as figure 1 The butterfly valve elastic metal sealing ring and its processing technology shown, its structure includes a metal sealing ring 1, the metal sealing ring 1 has a mounting hole 2 suitable for the butterfly plate; Elastic grooves 3 are formed respectively, and the direction of the elastic grooves 3 on both sides is in the direction of the oblique cone formed by the sealing surface of the metal sealing ring 1, and the center line of the oblique cone formed by the elastic groove 3 is in line with the sealing surface of the metal sealing ring 1. The centerlines of the formed oblique cones coincide; a positioning step 4 is set in the plane of one side of the metal sealing ring 1 .

[0024] The processing technology of butterfly valve elastic metal sealing ring includes the following processes: Process 1: rough machining process, process 2: surfacing process, process 3: finishing process;

[0025] The rough machining process includes the following processes: ...

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Abstract

The invention relates to a butterfly valve elastic metal sealing ring and a machining technology thereof. The butterfly valve elastic metal sealing ring structurally comprises a metal sealing ring body which is provided with an installation hole matched with a butterfly plate. The butterfly valve elastic metal sealing ring is characterized in that planes on the two sides of the metal sealing ringbody are internally provided with elastic grooves correspondingly, the direction of the elastic grooves on the two sides and an inclined cone formed by the sealing surface of the metal sealing ring body are the same, and the inclined cone center line formed by the elastic grooves coincides with the inclined cone center line formed by the sealing surface of the metal sealing ring body; and a positioning step is arranged in the plane on one side of the metal sealing ring body. The elastic grooves are subjected to track simulating machining and is high in consistency with the curve of the sealingsurface of the metal sealing ring body. The butterfly valve elastic metal sealing ring has the advantages that the rigidity is good, the elastic compensation reliability of the sealing surface is good, and the bidirectional sealing performance of a sealing pair formed by the butterfly valve elastic metal sealing ring and a valve seat in a matched is good.

Description

technical field [0001] The invention is applicable to the field of valves, in particular to the structure and processing technology of a butterfly valve metal sealing ring. The invention is suitable for the sealing ring of the triple eccentric metal sealing butterfly valve. Background technique [0002] At present, the metal sealing ring of the triple eccentric metal sealing butterfly valve produced at home and abroad generally adopts an integral structure or a J-shaped elastic ring structure. The metal sealing ring of the integral structure has no elasticity, and the forced sealing between the metal sealing ring and the valve seat can only be realized simply. One-way sealing, full-pressure sealing cannot be achieved in the reverse direction, and the metal sealing ring has no elastic compensation. After the valve is opened and closed several times, the metal sealing surface is scratched to cause leakage, and the sealing effect is not ideal. The metal sealing ring with J-sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/32B23P15/00
CPCB23P15/001F16K1/32
Inventor 杜可庆邹新鹏柯一杭许开化张国希潘昕垚胡鹏程
Owner KEKE VALVE ZHEJIANG
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