There are many kinds of fire extinguishers, which can be divided into portable type and trolley type according to their movement mode. According to the power source of driving extinguishing agent, it can be divided into: gas storage bottle type, pressure storage type and chemical reaction type. According to the charge of the extinguishing agent can be divided into: foam, dry powder, halogenated alkanes, carbon dioxide, water.
Dry powder fire extinguisher
Principle: dry powder fire extinguisher is filled with dry powder extinguisher. Dry powder extinguishing agent is dry and easy to extinguish
Dry powder fire extinguisher
Dry powder fire extinguisher
The flowing fine powder is composed of inorganic salt with extinguishing effect and a small amount of additives which are dried, crushed and mixed to form a fine solid powder. Use compressed carbon dioxide to blow dry powder (mainly sodium bicarbonate) to put out the fire.
Structure: the dry powder fire extinguisher USES carbon dioxide gas or nitrogen gas as the power, the dry powder inside the bottle spurts out to extinguish the fire. Dry powder is a kind of dry, easily flowing, fine solid powder, with fire-extinguishing materials and moisture-proofing agents, flow accelerators, agglomeration prevention agents and other additives.
Foam extinguisher
How it works: foam extinguishers contain two containers containing two liquids, aluminum sulfate and sodium bicarbonate, which do not touch each other and do not undergo any chemical reaction. When a foam extinguisher is needed, stand the extinguisher upside down. When the two solutions are mixed together, a large amount of carbon dioxide gas will be produced.