Bottle valve for shock-proof dry powder extinguishing devices

Abstract

The invention relates to a fire extinguishing technology, and discloses a bottle valve for shock-proof dry powder extinguishing devices. The bottle valve comprises a lower valve body with a first step through hole, an upper valve body is arranged in the upper part of the lower valve body, and the upper part of the upper valve body is provided with an upper valve bonnet; the upper valve body is provided with a second step through hole which is coaxial with the first step through hole, a puncturing needle penetrates through the inside of the second step through hole, the upper part of the puncturing needle is sleeved with a piston, the lower hole of the second step through hole is in clearance fit with the puncturing needle, and the upper hole of the second step through hole is in slide fit with the piston; the bottom of the upper hole of the first step through hole is provided with a diaphragm, the diaphragm is provided with a pressing ring, the pressing ring is provided with a shock-proof gasket, the bottom of the upper valve body props against the shock-proof gasket, the shock-proof gasket is provided with an inner tapered hole, the diameter of the lower part of the puncturing needle is less than that of the upper part of the puncturing needle, and the transitional surface of the puncturing needle is matched with the inner tapered hole of the shock-proof gasket; and the upper valve bonnet is provided with a central hole, the central hole is in sliding fit with the puncturing needle, the upper valve bonnet, the upper valve body, the piston and the puncturing needle are formed to an annular closed cavity, and an explosive box is arranged in the annular closed cavity.

Description

technical field [0001] The invention relates to fire-fighting and fire-extinguishing technology, in particular to a bottle head valve for an anti-shock type dry powder fire-extinguishing device. Background technique [0002] The bottle head valve is the main control mechanism used to seal and release the dry powder fire extinguishing gas in the fire fighting device. At present, in the bottle head valve used in traditional dry powder fire extinguishing devices, the internal puncture needle first compresses the spring and fixes it with a limit pin. The puncture needle relies on the compressed limit spring to pierce the diaphragm, so as to release the dry powder fire extinguishing gas Purpose. However, in a moving state such as a vehicle, the dry powder fire extinguisher is prone to vibration, and the puncture needle compresses the limit spring to puncture the diaphragm by mistake, thereby releasing the fire extinguishing gas by mistake when it is not required for fire extingu...

AI Technical Summary

Problems solved by technology

However, in a moving state such as a vehicle, the dry powder fire extinguisher is prone to vibration, and the puncture needle compresses the lim...

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