Pneumatic safety pressure stabilizing and adjusting protection gate valve

Abstract

The invention discloses a pneumatic safety stabilizing and regulating protection gate valve, which comprises a hand wheel, a main valve body and a spring overpressure protection valve. The protection valve is installed inside the pressure relief port, a pressure relief piston is arranged inside the main valve body close to the top of the spring overpressure protection valve, and an input port is arranged on the left side of the main valve body. The spring overpressure protection valve is convenient to protect the connecting pipes between the valve body and both ends, avoiding the problem that the pipe or valve body is damaged by excessive pressure of the medium. The spring overpressure protection valve can control the pressure inside the valve body to the level that the valve body can bear Within the maximum pressure, it is safer and more convenient to use, avoiding real-time monitoring by other monitoring equipment. The sealing rubber ring can effectively seal the main valve body and the valve stem support frame. The valve is designed with a pneumatic actuator, which can quickly open and close the valve to deal with abnormal pressure increase In some cases, the valve can be opened quickly.

Description

technical field [0001] The invention belongs to the technical field of pneumatic gate valves, and in particular relates to a pneumatic safety stabilizing and regulating protection gate valve. Background technique [0002] Pneumatic gate valve, with the help of compressed air-driven valve, when the gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, relying on the medium pressure to press the sealing surface of the gate plate to the valve seat on the other side to ensure the sealing of the sealing surface. It is self-sealing. Most of the gate valve is forced seal, that is to say, when the valve is closed, the gate should be pressed to the valve seat by external force, so as to ensure the sealing surface sealing. [0003] The existing pneumatic gate valve cannot discharge the excess medium in time when the medium inside the pipeline is over-pressurized, which may easily cause pipeline rupture and damage, and poor safety. For this reas...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pneumatic safe voltage stabilizing and regulating protection gate valve to solve the problem that the pneumatic gate valve in the above background technology cannot discharge excess medium in time when the medium inside the pipeline is over-pressurized, which may easily cause pipeline rupture and damage , the problem of poor security

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