Dry powder and foam dual-purpose fire extinguishing device

Abstract

The invention belongs to a dry powder and foam dual-purpose fire extinguishing device which comprises a trolley (1). A gas cylinder and barrel fixing mechanism (2) is installed inside the trolley (1); a gas cylinder (10) is fixed to the right side of the interior of the gas cylinder and barrel fixing mechanism (2) through a gas cylinder fixing belt (11); a gas cylinder valve (9) is installed at the upper end of the gas cylinder (10); a pressure reducer (8) is installed on the gas cylinder valve (9); and a spray gun (7) is installed at the top end of the trolley (1) through a spraying pipe (6). The dry powder and foam dual-purpose fire extinguishing device is characterized in that a barrel and barrel cylinder valve mechanism (3) is installed inside the gas cylinder and barrel fixing mechanism (2); and an electronic control system (4) and a pneumatic control system (5) are installed on the upper portion of the barrel and barrel cylinder valve mechanism (3). A dry powder barrel and a foam liquid barrel contain dry powder medicament and foam medicament correspondingly, and the fire can be extinguished by selecting corresponding medicament according to the field situations; and the spraying time is long, operation is easy and convenient, and the fire extinguishing effect is good.

Description

technical field [0001] The invention belongs to a fire extinguisher, in particular to a dual-purpose fire extinguisher for dry powder and foam. Background technique [0002] Most of the dry powder fire extinguishers on the market are pressure storage type or single fire extinguishers with gas storage cylinders. The first disadvantage is that the storage pressure of the driving gas source is low and the gas volume is small: when this type of dry powder fire extinguisher is stored or sprayed, the driving gas is directly discharged without decompression. Contact with dry powder agents determines that the maximum storage pressure is low, and the gas storage volume is small, which also means that the injection time is short, especially represented by portable dry powder fire extinguishers. The second disadvantage is the instability of the pressure of the driving gas source: as the injection progresses, the storage pressure in the fire extinguisher or the output pressure of the ga...

AI Technical Summary

Problems solved by technology

[0002] Most of the dry powder fire extinguishers on the market are pressure storage type or single fire extinguishers with gas storage cylinders. The first disadvantage is that the storage pressure of the driving gas source is low and the gas volume is small: when this type of dry powder fire extinguisher is stored or sprayed, the driving gas is directly discharged without decompression. Contact with dry powder agents determines that the maximum storage pressure is low, and the gas storage volume is small, which also means that the injection time is short, especially represented by portable dry powder fire extinguishers.

The second disadvantage is the instability of the pressure of the driving gas source: as the injection progresses, the storage pressure in the fire extinguisher or the output pressure of the gas cylinder will gradually decrease, and the spray distance of the fire extinguishing agent will gradually decrease, which will pose a danger to the operator

The third disadvantage is the inconvenience of storage and operation: when ordinary portable dry powder fire extinguishers are stored and placed, all safety and operating devices are exposed and placed, and when they are scratched, dropped or dropped by foreign objects, they can pose a threat to the safety mechanism , resulting in mis-spraying; and the greater the filling amount of dry powder, the greater the quality of the fire extinguisher, which is very inconvenient for handling during fire extinguishing

[0004] The above two fire extinguishing devices are independent fire extinguishing products. In the face of complex fire situations, the fire extinguishing operation is extremely inconvenient or even impossible to directly extinguish the fire.

For example, for oil fires caused by electrical fires, too small dry powder fire extinguishers cannot guarantee timely extinguishing of electrical fire sources due to the relationship between the filling volume or large dry powder fire extinguishers, and cannot be used if the electrical fire sources are not extinguished. Foam agent for fire extinguishing operations

Therefore, in the face of this situation, both fire extinguishers must be configured. One is a waste of storage space, the other is a waste of resources, and the third is that more operators are required, resulting in a waste of manpower and material resources.

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