Automatic passive fire protection spraying valve

Abstract

The invention provides an automatic passive fire protection spraying valve, which belongs to the field of automatic fire protection control equipment and is characterized in that a valve body is internally provided with a cylindrical water outlet. A membrane type piston is arranged on the upper end of the water outlet. A return spring is arranged in the middle upper part of an internal sleeve. The upper part of the resetting spring is supported against the inner upper part of a valve cover. The external top part of an external sleeve of a valve core is provided with a compression bar which iscovered by a pressure spring. The compression bar passes through a round hole at the top of the internal sleeve and is connected with an adjusting nut on a hot gathering cover. Due to the delayed action of the pressure spring, a defect that a valve is immediately closed when a memory alloy contracts is avoided and the spraying time is delayed.

Description

technical field [0001] A passive automatic fire sprinkler valve belongs to the field of cooling and fire automatic control equipment. Background technique [0002] In the existing fire protection system, the smoke ion sensor and the glass bubble type water spray head are installed in the room, which can only be applied in higher-level buildings such as hotels, restaurants, and office buildings. When the temperature of the glass bubble type water sprinkler head increases rapidly, the organic solvent in it evaporates, causing the glass bubble to break, and the fire water connected to the glass bubble will spray down, thereby inhibiting the spread of the fire. This disposable device cannot cut off the water source on site, let alone automatically close the valve after the ambient temperature drops, so after the fire is extinguished, the broken glass bubbles will still be sprinkled with water, and a large amount of precious water resources will be wasted. Another kind of existi...

AI Technical Summary

Problems solved by technology

This one-time device cannot cut off the water source on site, let alone automatically close the valve after the ambient temperature drops, so after the fire is extinguished, the broken glass bubbles will still be sprinkled with water, and a large amount of precious water resources will be wasted.

Another kind of existing technology is "intelligent active fire extinguishing device", although it can be automatically closed and sprayed automatically, but because the temperature range of opening and closing is too narrow, it is not conducive to the complete extinguishment of the fire on the spot

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