Built-in superfine dry powder fire-extinguishing device

Abstract

The invention discloses a built-in superfine dry powder fire extinguishing device, which comprises a fixed seat, an outer cylinder, an inner barrel, a nozzle pipe and a piston part. An air inlet is arranged on the side wall of the fixed seat; The openings are connected; the interior of the inner barrel is filled with ultra-fine dry powder, the inner barrel is slidably assembled on the inner side of the outer barrel, and a plurality of spray holes are arranged on the side wall of the blind end of the inner barrel; one end of the nozzle is fixedly connected to the inner bottom of the fixed seat, and the other One end extends into the inner barrel, and the end of the nozzle extending into the inner barrel is provided with a bell mouth that is sliding and sealingly matched with the inner wall of the inner barrel, and the side wall of the nozzle is provided with a through hole that communicates with the bell mouth; on, and seal the through hole on the nozzle. The built-in ultra-fine dry powder fire extinguishing device of the present invention has a simple structure and small volume, which reduces the requirements for installation space. The ultra-fine dry powder is blown out from multiple injection holes by gas drive to extinguish the fire. The working surface can cover the pipes and Various locations for cable ducts.

Description

technical field [0001] The invention belongs to the field of fire-fighting equipment, and in particular relates to a built-in superfine dry powder fire extinguishing device. Background technique [0002] The upper closed space of houses, warehouses, warehouses and other partitions is usually used to arrange pipes and cable ducts. When a fire occurs here, the sprinkler device used for fire extinguishing generally cannot effectively work on the pipes and cable ducts, so it can only Ultra-fine dry powder fire extinguishing device is used for protection. Most of the common ultra-fine fire extinguishing devices are suspended structure or prefabricated nozzle structure. The suspended structure generally has a large appearance and volume. Due to the limited installation position, it is less adaptable in actual use. Poor, when the prefabricated nozzle structure is used, another pipeline needs to be connected to transport the dry powder to the nozzle, which increases the difficulty o...

AI Technical Summary

Problems solved by technology

[0002] The upper closed space of houses, warehouses, warehouses and other partitions is usually used to arrange pipes and cable ducts. When a fire occurs here, the sprinkler device used for fire extinguishing generally cannot effectively work on the pipes and cable ducts, so it can only Ultra-fine dry powder fire extinguishing device is used for protection. Most of the common ultra-fine fire extinguishing devices are suspended structure or prefabricated nozzle structure. The suspended structure generally has a large appearance and volume. Due to the limited installation position, it is less adaptable in actual use. Poor, when the prefabricated nozzle structure is used, another pipeline needs to be connected to transport the dry powder to the nozzle, which increases the difficulty of work

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