What kinds of fire extinguishers

What kinds of fire extinguishers are there

Firefighting equipment is a necessity in our daily lives. Although fire extinguishers are common, but many people don't know how to use them. Then what kinds of fire extinguishers? What should be noted when using fire extinguishers? Below, I will introduce you to the relevant content, take a look.

Dry powder fire extinguishing device: this is a small fire extinguishing agent can be moved, by the inorganic salt and a small amount of solid powder mixture, can be used to extinguish the fire.

Foaming agent: in its bottle, there are two canisters containing two different liquids, one is sodium bicarbonate and the other is aluminum sulfate, which do not come into contact with each other and do not produce any chemical reaction. To put out a fire, the bottles are inverted so that the two liquids come into contact with each other, producing carbon dioxide, which serves to extinguish the fire.

Carbon dioxide fire extinguishing device: it is filled with liquid carbon dioxide, and it is very simple to use, just need to press the pressure. As long as the concentration of carbon dioxide is sufficient, the flame can be extinguished.

Water fire extinguishing device: this is a more traditional fire extinguisher, filled with a large amount of water, it is very versatile and well stored.

What should be noted about the use of fire extinguishers

Fighting a fire with a fire extinguisher is generally five meters away from the source of the fire, if the distance is closer, you can be two meters away from the source of the fire to extinguish the fire, but the specific operation should be based on the scene to determine the situation. When putting out a fire, be sure to stand back so that the fire does not spread to you. Be careful not to point the lid and bottom of the extinguisher toward your body to prevent ejection injuries.

Cooling down the fire: that is, use the fire extinguisher to spray directly on the flammable material to make its temperature lower than the spontaneous combustion point, so as to stop burning.

Isolated fire-fighting: it is to separate the fuel point from the surrounding flammable objects in order to stop the combustion.

Asphyxiation suppression: is to take appropriate measures to prevent air from entering the combustion zone or to dilute the oxygen in the air with inert gases, resulting in a shortage of fuel or a lack of oxygen to extinguish.

Inhibited extinguishing method: chemical extinguishing agents are sprayed into the combustion zone to participate in combustion and interrupt the chain reaction, thus terminating the combustion reaction.