High-safety winter anti-freezing fire-fighting nozzle

Abstract

The invention relates to the technical field of fire-fighting equipment, and discloses a high-safety winter anti-freezing fire-fighting nozzle which comprises a fire-fighting nozzle body. A threaded pipe is arranged at the top of the fire-fighting nozzle body, a fire-fighting water inlet is arranged in the threaded pipe, a water blocking plug is movably installed at the bottom of the fire-fightingwater inlet, and two sealing gaskets are fixedly installed between the periphery of the water blocking plug and the bottom end of the fire-fighting water inlet and located on the water blocking plug.A glass ball is arranged under the water plugging plug, and the glass ball is filled with heat-sensitive liquid. According to the high-safety winter anti-freezing fire-fighting nozzle, a special-shaped deicing tray is arranged to be in the shape of a plane with the top end concaved inwards, the top end of the special-shaped deicing tray can be a weak stress face, when water in the fire-fighting water inlet is iced and expanded in volume, the special-shaped deicing tray breaks preferentially compared with the glass ball, and the ice in the fire-fighting water inlet is in contact with exposed sodium chloride powder in the special-shaped deicing tray to reduce the freezing point, so that the problem that freezing continues to generate to squeeze the glass ball to cause damage is avoided.

Description

technical field [0001] The invention relates to the technical field of fire fighting equipment, in particular to a winter antifreeze fire sprinkler with high safety. Background technique [0002] Fire sprinkler is a kind of fire-fighting equipment that can start automatically according to the predetermined temperature and spray water to extinguish the fire when a fire occurs. [0003] For the structure of traditional fire sprinklers, please refer to figure 1 , its working principle is: connect the fire sprinkler body 1 with the fire water pipe through the threaded pipe 2, so that the fire water can stay inside the fire water inlet 3, once a fire occurs and reaches a predetermined temperature, the heat-sensitive liquid 7 inside the glass bulb 6 Expansion rapidly expands glass bulb 6 and bursts, and after glass bulb 6 expands and cracks, water plug 4 loses support and is extruded by the pressure of fire-fighting water, and fire-fighting water splashes to all around by splashi...

AI Technical Summary

Problems solved by technology

[0004] In the process described in the above working principle, it is not difficult to find that the glass ball 6 plays a very important role in the working process of the fire sprinkler head. However, the fire sprinkler head still has false starts in the actual use process, such as in winter when the temperature is lower than - At 5°C, the frozen water in the fire water pipe expands in volume, and the expansion force directly acts on the glass ball 6 through the water plug 4, causing the glass ball 6 to burst. In addition, the traditional glass ball 6 is directly exposed to the outside world. The explosion of the glass ball 6 caused by accidental collision will cause a large amount of fire-fighting water to pour out, causing the indoor property or goods to be wet or soaked, thereby causing unexpected economic losses.

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