Plane sealing and conical surface sealing combined corrugated pipe valve

Abstract

The invention discloses a plane sealing and conical surface sealing combined corrugated pipe valve. The corrugated pipe valve comprises a valve body and a valve deck, a valve rod nut is rotationally installed at the top end of the valve deck, an outer valve rod is connected into the valve rod nut in a threaded mode, the bottom end of the outer valve rod extends downwards into an inner cavity of the valve body and is fixedly connected with a plane sealing valve element, an inner valve rod is arranged in an inner hole channel of the outer valve rod, the bottom of the inner valve rod downwards penetrates through a through hole of a limiting piece and then is connected with a corrugated pipe, the bottom end of the corrugated pipe is connected with a conical surface sealing valve element, a stress platform is arranged at the top end of the inner valve rod, the inner valve rod is sleeved with a spring, the upper end and the lower end are limited in an abutting mode through a limiting bafflering and the limiting piece respectively, the top of the hole channel of the outer valve rod is in threaded connection with a screw ejector rod, force is applied to the part, at the top of the inner valve rod, of the stress platform through the bottom of the screw ejector rod, and a plane sealing table and a conical surface sealing table are arranged in the inner cavity of the valve body. The corrugated pipe valve has the advantages that the overall sealing performance of the valve is improved, and the service life of the valve is prolonged.

Description

Technical field [0001] The invention relates to a valve, in particular to a bellows valve that combines a plane seal and a cone seal. Background technique [0002] With the development of society, the requirements for energy saving and consumption reduction and technology are getting higher and higher. Preventing "running, leaking, dripping, and leaking" is becoming more and more important for the development of enterprises. Bellows valve is one of the most widely used valves, not only suitable for medium and low pressure, but also for high pressure. Plane seals are the most commonly used in bellows valves. The advantage is that there is no friction when the contact surfaces are tight, so the guiding requirements for the closing parts are not high. At the same time, the roundness of the sealing surface is deformed due to the stress of the pipeline. , It will not affect the sealing performance of the sealing surface. However, the flat sealing structure exerts a relatively large...

AI Technical Summary

Problems solved by technology

However, the flat sealing structure exerts a large sealing force. If it is used in a complex medium environment, the sealing performance will not meet the requirements, and it will take a lot of manpower and financial resources to replace or repair it.

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