Valve seat sealing assembly of pneumatic stop valve and using method of valve seat sealing assembly

Abstract

The pneumatic stop valve seat sealing assembly comprises a pneumatic stop valve body, the bottom of the pneumatic stop valve body is movably connected with a valve seat body, and the portion, located in an inner cavity of the valve seat body, of the bottom of the pneumatic stop valve body is movably connected with a sealing plate. By arranging the valve seat body, the effect of supporting the pneumatic cut-off valve body is achieved, so that the stability of the pneumatic cut-off valve body during operation is improved, and the electric push rod is used for driving the connecting block and the connecting rod to move; therefore, the connecting rod drives the connecting base, the sealing gasket and the fixing plate to be matched with the air blocking plate to block the airflow, the airflow can be intercepted, and the problems that most of existing pneumatic stop valves are used in cooperation with the valve seat, but the airflow of the pneumatic stop valve is difficult to seal and intercept through a traditional valve seat, and the sealing effect is poor are solved. Therefore, the problem that airflow of the pneumatic stop valve cannot be conveyed according to actual needs is solved.

Description

technical field [0001] The invention relates to the technical field of pneumatic cut-off valves, in particular to a pneumatic cut-off valve seat sealing assembly and a method of using the same. Background technique [0002] Pneumatic shut-off valve, also known as pneumatic shut-off valve, is a kind of actuator in automation system. It is composed of multi-spring pneumatic diaphragm actuator or floating pneumatic shut-off valve piston actuator and regulating valve. It receives signals from regulating instruments and controls process pipelines. The shut-off valve can be used to cut off, connect or switch the internal fluid. It has the function of quick cut off. It has the characteristics of simple structure, sensitive response and reliable action. It can be widely used in petroleum, chemical, metallurgical and other industrial production departments. The air source of the shut-off valve requires filtered compressed air, and the medium flowing through the valve body should be l...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a pneumatic cut-off valve seat sealing assembly and its use method, which has the advantage of easy sealing, and solves the problem that most of the existing pneumatic cut-off valves are used in conjunction with the valve seat, but the traditional valve seat is difficult to achieve pneumatic cut-off The air flow of the valve is sealed and intercepted, which will cause the problem that the air flow of the pneumatic shut-off valve cannot be delivered according to actual needs

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