🔥 Fire extinguishers are essential safety equipment for enterprises! Do you know them? 🤔 Today, let's explore the world of fire extinguishers together and see how they are classified and work! 🔍
🚫 Firstly, we need to understand the classification of fire extinguishers. According to the filling method, fire extinguishers can be divided into lift type, cart type, hanging type, and throwing type. According to the mode of movement, there are portable, cart type, etc. 🚪
🧨 Next, let's delve into several common types of fire extinguishers:
Dry powder fire extinguisher: using carbon dioxide or nitrogen gas as power, spraying dry powder to extinguish the fire. Dry powder is mainly composed of active fire extinguishing components, hydrophobic components, and inert fillers, which can effectively extinguish Class A, B, and C fires. 🧱🔥
Water based fire extinguisher: Its extinguishing mechanism is based on the principle of physical fire extinguishers. Fire extinguishing agents have a penetrative effect on Class A fires, which can maximize their effect on the surface of the combustibles and control the spread of the fire. 💧
Foam extinguisher: A large amount of carbon dioxide foam is produced by mixing sodium bicarbonate and aluminum sulfate, which can insulate heat, isolate air and cool down. Suitable for extinguishing Class B fires. 🛡️
Carbon dioxide fire extinguisher: using liquid carbon dioxide to spray and extinguish fires, with good fluidity and high spraying rate, suitable for extinguishing initial fires in books, archives, precision instruments, etc. 📚
Metal fire extinguisher: specifically used to extinguish fires caused by the combustion of reactive metals such as potassium, sodium, magnesium, etc., typically made of sodium chloride based powder or graphite based powder. ⚙️
🔥 Now, do you have a deeper understanding of fire extinguishers? Remember, safety is no small matter. Mastering this knowledge can be of great use in critical moments! 🛡️