Safety valve

Abstract

The invention relates to the technical field of valves, in particular to a safety valve. The safety valve comprises an elastic sealing chamber structure, a lever on-off structure, an over-current line breaking device, a ball piston on-off structure and a breakable connecting structure, the elastic sealing chamber structure comprises a base body seat, an elastic sealing gasket, a sealing chamber spring and a mounting bowl body, the base body seat is provided with a plane base body part, and the plane base body part and the elastic sealing gasket are jointly limited to form an elastic sealing chamber. The lever on-off structure comprises an air tap piece, a transmission lever and an on-off sliding plug, the on-off sliding plug is arranged on a sliding pipe part in a sliding mode, one end of the on-off sliding plug is connected with one end of the transmission lever, and an up-down floating piece providing power for rotation of the transmission lever is further included. The over-current line breaking device comprises a floating ball, a ball chamber, an elastic recovery piece and a buffer storage chamber. According to the safety valve, when downstream gas leakage occurs, automatic line breaking can be achieved, excessive gas leakage is avoided, and the safety protection function is achieved.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a safety valve. Background technique [0002] Bottled gas is small and flexible, easy to use, and widely used. Because of its wide use, it is often used unsafely. It often happens that the bottle body falls or the valve connection is subjected to external force impact, and gas leaks from gas appliances. Gas leakage can easily cause fire and explosion. The general process is that the gas that slowly leaks into the space reaches the ignition point and starts to catch fire. After the fire, the high temperature makes the connecting hose melt or the gas valve leaks and then leaks more gas, which then leads to an explosion. or more severe fires. In order to solve this problem, there is a gas valve that can automatically break the circuit at high temperature. However, the gas valve can only play a role after the gas valve itself is burned and the temperature rises. In actual situations,...

AI Technical Summary

Problems solved by technology

[0002] Bottled gas is small and flexible, easy to use, and widely used. Because of its wide use, it is often used unsafely. It often happens that the bottle body falls or the valve connection is subjected to external force impact, and gas leakage occurs in gas appliances.

Gas leakage can easily cause fire and explosion. The general process is that the gas that slowly leaks into the space reaches the ignition point and starts to catch fire. After the fire, the high temperature makes the connecting hose melt or the gas valve leaks and then leaks more gas, which then leads to an explosion. or more intense fire

In order to solve this problem, there is a gas valve that can automatically break the circuit at high temperature. However, the gas valve can only play a role after the gas valve itself is burned and the temperature rises. In actual situations, the installation position of the gas valve is often difficult. In the case of being burned, even if the gas leaks and causes a fire, the temperature of the gas valve does not reach the value of the circuit breaker because the gas valve is not burned, resulting in the phenomenon that the gas valve that automatically breaks the circuit at this high temperature still fails

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