Anti-impact stop valve sealing structure

Abstract

The invention discloses an anti-impact stop valve sealing structure. A valve clack is arranged on a valve base, the contact surface of the valve clack and the valve base forms a sealing surface, a recessed hole is arranged in the valve clack, a wear-resisting gasket is mounted at the bottom of the recessed hole, a buffer cover is arranged on the wear-resisting gasket, one spring is sleeved at the top of the buffer cover, one spring is tightly contacted with an inner hole retracted at the bottom of a valve rod, the end portion of the valve rod is provided with a boss, and a locking nut is connected with the valve clack to be locked tightly and then to press on the boss on the end portion of the valve rod. The anti-impact stop valve sealing structure has the advantages that the problem that the sealing surface of the valve is deformed or damaged caused by impact from rapid axial force can be effectively solved, service life of a stop valve sealing pair is prolonged, and sealability is good.

Description

Technical field [0001] The present invention involves the field of valve technology, which specializes in a sealing structure of anti -impact cuttering valve. It mainly uses industries such as petrochemical and coal chemical industry. The operating conditions require high -frequency and fast switching truncorated valves. Background technique [0002] With the continuous development of petrochemical and coal chemical devices to high -parameters, large -scale, and integrated development, the device needs to use a large amount of rapid cutting off -air or hydraulic cut -off valve to quickly cut off the switching time of the cut -off valve. figure 1 It is the sealing structure of the traditional cut -off valve. Under the slow switching speed, the covered cover will not cause the seal deformation or damage caused by the axial impact, causing the sealing of the cut -off valve.In the case of rapid switching, the valve cover surface is easily impacted by axial force, causing the sealing ...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of petrochemical and coal chemical equipment to high parameters, large scale and integration, a large number of quick cut-off pneumatic or hydraulic devices are required Globe valve, the switching time of the shut-off valve is very fast; Figure 1 is the sealing structure of the traditional globe valve. When the switching speed is relatively slow, the sealing surface will not be deformed or damaged due to the impact of axial force, resulting in the sealing failure of the globe valve; however, the traditional globe valve When the sealing structure is used in the case of fast switching, the sealing surface of the valve is easily impacted by the axial force quickly, causing the sealing surface to be deformed or damaged, resulting in the sealing failure of the globe valve and short service life.

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