Six-dimensional eccentric valve sealing structure

Abstract

The invention relates to the technical field of valve sealing, in particular to a six-dimensional eccentric valve sealing structure which mainly comprises a valve rod, a valve seat, a sealing ring and an opening and closing butterfly plate. The special limit of the butterfly plate ensures that the phenomenon of uneven installation of the sealing ring caused by the pretightening force difference of a bolt is avoided, the problem that main parts of the butterfly valve are difficult to install is solved, the special design of the structure ensures that the butterfly valve has excellent sealing performance, the opening and closing moment is greatly reduced, and the service life of the butterfly valve is prolonged. 0-leakage sealing is guaranteed within a certain opening and closing angle interval, the eccentric structure of the sealing ring can achieve the effect of scraping impurities, the structure allows 360-degree opening and closing of the butterfly plate after installation is completed, emergency treatment can be carried out when impurities adhere to the valve seat, the impurities are prevented from damaging the sealing face, the service life of the butterfly plate is greatly prolonged, and the service life of the butterfly plate is prolonged. The structure also breaks through the technical barrier that non-pure media cannot pass through the butterfly valve, and new possibility is provided for the butterfly valve.

Description

technical field [0001] The invention relates to the technical field of valve sealing, in particular to a six-dimensional eccentric valve sealing structure. Background technique [0002] Ball valve and butterfly valve are the two most widely used valves in today's valves. They are simple and easy to operate, and play the role of shutting off and cutting off the pipeline medium. Valves with rotary motion can also be used for fluid regulation and control. Among them, the hard-sealed V-shaped ball valve has a strong shear force between the V-shaped ball core and the metal valve seat of hard alloy surfacing, which is especially suitable for fibers containing fibers. , small solid particles and other media, and the multi-way ball valve can not only flexibly control the confluence, diversion, and switching of the flow direction of the medium on the pipeline, but also can close any channel and connect the other two channels; Plate valve is a kind of regulating valve with simple str...

AI Technical Summary

Problems solved by technology

[0002] Ball valve and butterfly valve are the two most widely used and widely used valves in today's valves. They are simple and easy to operate, and they can cut off and cut off the pipeline medium. Rotary motion valves can also be used for fluid regulation and control. Among them, the hard-sealed V-shaped ball valve has a strong shear force between the V-shaped ball core and the hard-facing metal valve seat, which is especially suitable for fiber-containing valves. , small solid particles, etc., and the multi-way ball valve can not only flexibly control the confluence, diversion, and switching of the flow direction of the medium on the pipeline, but also close any channel to connect the other two channels; the butterfly valve is also called a flip valve. Plate valve is a regulating valve with simple structure, mainly composed of valve body, valve stem, butterfly plate and sealing ring. The valve body is cylindrical, with short axial length and built-in butterfly plate. Some traditional structures have the problems of excessive wear and high pressure, resulting in poor sealing performance and short service life

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