A safety disconnect valve

Abstract

The invention discloses a safe disconnecting valve. The manner that intermediate bushings are connected to a left valve body and a right valve body in a clamped manner is adopted, when the valve is switched on, a left valve element and a right valve element jack and press each other under the action of elastic force of pre-compression elastic parts, lock pillars on guide bodies make bushing bodies be fixed to a left protrusion and a right protrusion, and a pull rope combination is connected with the lock pillars of the intermediate bushings; when a pull rope is pulled, the lock pillars are separated from a through hole to drive the hushing bodies to be separated, and under the action of elastic force of the pre-compression elastic parts, the left valve body and the right valve body are separated instantly; meanwhile the left valve element and the right valve element seal the left valve body and the right valve body correspondingly through the elastic force of the pre-compression elastic parts, and the requirement for sealing and protection functions in the disconnection process is effectively achieved; in addition, the pulling-out force of the pull rope can be adjusted through the elastic parts of the guide bodies or precompression of adjustment bolts of guide components, and the instant switching-off sealing performance of the left valve body and the right valve body which are pulled broken can be guaranteed through an arranged second sealing ring and a third sealing ring; and meanwhile, the safe disconnecting valve has the characteristics of being simple in structure, convenient to install, capable of being clamped and fixed again, capable of being used repeatedly and high in practicability.

Description

technical field [0001] The invention relates to the technical field of emergency cut-off valves, in particular to a safety cut-off valve. Background technique [0002] During the transportation of fluid pipelines for industrial production, the pipelines and the valves and other accessories installed on the pipelines need to be protected against breakage. Especially chemical liquids, toxic liquids and flammable liquids and gases. For example, the connection between the movable nozzle and the fixed nozzle is easy to disconnect or rupture the pipeline interface due to sudden overload and external force at the movable nozzle, resulting in fluid leakage, which may cause serious breaking accidents. In response to this problem, the application and promotion of disconnect valves have been developed and have involved many industries. The applicable fields include the output and input of oil tanks and other fixed and mobile fluid storage devices, such as the connection between the fl...

AI Technical Summary

Problems solved by technology

For example, the connection between the movable nozzle and the fixed nozzle is easy to disconnect or rupture the pipeline interface due to sudden overload and external force at the movable nozzle, resulting in fluid leakage, which may cause serious breaking accidents. In response to this problem, the application and promotion of disconnect valves have been developed and have involved many industries. The applicable fields include the output and input of oil tanks and other fixed and mobile fluid storage devices, such as the connection between the fluid delivery arm and the transport carrier.

The safety disconnect valve products currently used in all walks of life are functionally required to achieve the ultimate purpose of the disconnect valve in order to avoid and prevent the occurrence of breaking accidents or to minimize the probability of high-risk accidents. High breaking performance, sealing performance after breaking, reliability and stability are required; however, the disconnect valve in the prior art has the problems of complex structure, high cost, and unstable breaking performance

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