Portable fire extinguisher with explosion vent

Abstract

The invention discloses A portable fire extinguisher with an explosion vent, comprising a shell arranged along the front and rear directions, an inner cylinder inserted in the shell cavity of the shell, a starting device located in the shell cavity of the shell and located on the rear end of the inner cylinder, sleeved on the shell The shell cap on the front end, the inner cylinder includes a first inner cylinder inserted in the shell cavity along the front and rear direction and stored with fire extinguishing agent, and a coolant stored slidably sleeved on the outer wall of the front end cylinder of the first inner cylinder. The second inner cylinder, the front end of the second inner cylinder is accommodated in the shell cap, the inner cylinder also includes an explosion vent opened on the side wall of the first inner cylinder, and a removable opening on the side wall of the second inner cylinder. Covering the explosion vent on or away from the shielding part of the explosion vent. By setting the starting device in the shell cavity, the phenomenon of automatic starting of the starting device due to the accidental collision of the user is effectively prevented; at the same time, the explosion vent is set to effectively prevent the inner cylinder from exploding due to excessive pressure in the cylinder The phenomenon of deflagration is safer to use.

Description

technical field [0001] The invention relates to the technical field of fire protection, in particular to a portable fire extinguisher with an explosion vent. Background technique [0002] Existing portable fire extinguishing devices are widely used. Although the portable fire extinguisher has a small structure, it may cause explosion and deflagration due to excessive pressure accumulation, which will cause the device to generate strong recoil and injure the user. In the process of deflagration and explosion, debris will be produced or the objects at the nozzle will break away from the body, causing accidental damage to the surrounding people and property. For example, in a portable aerosol fire extinguisher, when the powder column in the inner cylinder deflagrates, due to its small nozzle, the hot aerosol gas will accumulate rapidly in the cylinder, and the pressure in the cylinder will rise sharply, so the heat energy will be converted into huge kinetic energy. On the barr...

AI Technical Summary

Problems solved by technology

[0002]Existing portable fire extinguishing devices are widely used. Although the structure of portable fire extinguishers is small, it may cause explosion and deflagration due to excessive pressure accumulation, which will cause The device will generate a strong recoil force, which will injure the user. At the same time, during the deflagration and explosion, fragments or objects at the nozzle will be separated from the body, causing accidental damage to the surrounding people and property.

For example, in a portable aerosol fire extinguisher, when the powder column in the inner cylinder deflagrates, due to its small nozzle, hot aerosol gas will accumulate rapidly in the cylinder, and the pressure in the cylinder will rise sharply, so the heat energy is converted into huge kinetic energy, and the effect On the barrel, a part pushes the barrel cover forward along the direction of the spout, while the other part acts on the barrel to generate recoil in the opposite direction or a break in the barrel wall, which will bring Serious personal injury. In addition, due to its high momentum, the flushed cylinder cover will cause accidental injury to surrounding people or objects after it is separated from the cylinder.

At the same time, the start button of the start device of the existing fire extinguisher is mostly arranged outside the shell of the shell, protruding from the surface of the shell, so that in the daily use process, when the user accidentally hits the start button, the start device will be mis-started, The fire extinguisher loses its function due to mis-spraying, and even causes harm to the user and the surrounding environment

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