Fire extinguishers are common items in our daily lives, and can be seen in many public places. There are fire extinguishers in the corridors where everyone lives. There are many types of it, and each component is different. So, what are the main components of dry powder fire extinguishers? What should I pay attention to when using dry powder fire extinguishers? Let's take you to understand. It is sodium bicarbonate, also known as an inorganic salt. This substance can prefabricate combustibles, interrupt combustibles, and have a strong fire extinguishing effect. After spraying this type of fire extinguisher, its powder will directly fall on the surface of the burning object, forming a covering layer on it to isolate oxygen and achieve the purpose of extinguishing the fire.
Precautions for using dry powder fire extinguishers
1. For dry powder fire extinguishers, pay attention to their opening method when using. It is mainly divided into a pull ring and a press down handle. For the pull ring, just pull it up. And the downward pressure handle needs to be pressed down in order to have dry powder sprayed out. But no matter what type of insurance you use, you must first sell their insurance, otherwise you won't be able to spray it properly. In addition, when placing such fire extinguishers, do not invert them, let alone use them upside down. This not only affects the spraying effect, but also poses certain risks.
Due to the relatively short duration of portable spraying, it is necessary to align the powder spraying hose with the flame before spraying, and then open the valve for spraying. In addition, fire extinguishers also require close range spraying to be effective, and users can stand on the fire source, so we need to ensure our own safety when using them.
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