Air pressure buffer pneumatic actuator

Abstract

The invention discloses an air pressure cushioning pneumatic actuator, which comprises a casing, and the two ends of the casing are sealed by end covers, a buffer valve is arranged outside the casing, a piston assembly is arranged inside the casing, and the piston assembly separates the casing. It consists of an outer chamber located at both ends of the housing and an inner chamber located in the middle of the housing. There are multiple air holes on the inner side walls of the outer chamber and the inner chamber. The buffer valve includes a buffer housing, and a buffer Component A, the end cover is provided with a buffer component B, and the buffer housing is provided with two air intake holes, one of which is connected to the air hole on the side wall of the outer chamber and the buffer component B, and the other air intake hole They communicate with the air hole on the inner chamber and the buffer assembly A respectively, and the buffer assembly A communicates with the inner chamber through a pin hole, and the piston assembly can block the air hole on the side wall of the outer chamber or the inner chamber during the movement . The beneficial effects of the invention are: it has the advantages of good airtightness, cushioning function and prolonging the service life of the valve.

Description

technical field [0001] The invention relates to valves used in petroleum, natural gas, mining, petrochemical, electric power, and smelting product equipment, especially a pneumatic buffer pneumatic actuator suitable for quick opening and closing valves and triple eccentric butterfly valves. Background technique [0002] The valves used in oil, natural gas, mining, petrochemical, electric power, and smelting product equipment have various and harsh requirements for the use of control valves, and some entire sets of equipment have to be stopped for repairs due to problems with one valve, resulting in economic losses. It is immeasurable, especially when there is a problem with the working condition of the toxic medium, the treatment of the toxic medium in the entire pipeline will not only cost a lot of money but also cause dangerous accidents and pollute the environment. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages o...

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Problems solved by technology

[0002] Valves used in oil, natural gas, mining, petrochemical, electric power, and smelting product equipment, due to the diverse and harsh requirements for the use of control valves, some entire sets of equipment have to be stopped for repairs due to problems with one valve, resulting in economic losses It is immeasurable, especially when there is a problem with the working condition of the toxic medium, the treatment of the toxic medium in the entire pipeline will not only cost a lot of money but also cause dangerous accidents and pollute the environment

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