The fire extinguisher dry powder medicament is the main fire extinguishing component in the current dry powder fire extinguisher. It is composed of active fire extinguishing components, hydrophobic components and inert fillers.

How to use: When extinguishing a fire, carry the fire extinguisher by hand or shoulder to the fire field quickly, and lower the fire extinguisher at about 5 meters from the burning place. If you are outdoors, you should choose to spray in the upwind direction. If the dry powder fire extinguisher used is an external pressure storage type, the operator should hold the spray gun firmly in one hand and lift the opening ring on the gas cylinder with the other. If the cylinder is opened by hand wheel, turn it counterclockwise and turn it to the highest position, then lift the fire extinguisher. When the dry powder is sprayed out, quickly shoot at the root of the flame. If the dry powder fire extinguisher used is a built-in gas cylinder or pressure storage type, the operator should first remove the safety pin on the opening and then hold the nozzle part of the front end of the spray hose, and the other hand will open the pressure handle Press down and open the fire extinguisher to extinguish the fire. When using a fire extinguisher or a pressure storage fire extinguisher with a spray hose, always press down the handle with one hand and do not release it, otherwise the spray will be interrupted.

When dry powder fire extinguisher is used to extinguish combustible and flammable liquid fires, it should be directed at the main part of the flame. If the liquid fire being extinguished is flowing and burning, it should be aimed at the root of the flame from near to far and fired from left to right until the flame is completely extinguished. If a flammable liquid burns in the container, the user should shake the flame at the root of the flame to cover the entire opening surface of the container; when the flame is driven out of the container, the user should continue to spray until the flame is completely extinguished . When extinguishing a flammable liquid fire in a container, care should be taken not to direct the nozzle to the liquid surface to prevent the impact of the jet from flaming the flammable liquid and expanding the fire, making it difficult to extinguish the fire. If the combustible liquid is burned in a metal container for too long, and the wall temperature of the container is higher than the spontaneous ignition point of the extinguished combustible liquid, it is very easy to cause re-ignition after extinguishing the fire. If it is used in combination with a foam fire extinguisher, extinguish the fire The effect is better.

There are many types of fire extinguishers, and we need to understand the specific scope of application of each type of fire extinguishers in order to better play its role.