In order to protect our property safety, we need to be equipped with fire prevention measures. We can often see in some public property institutes that the use of fire extinguishers in time when fire occurs can reduce unnecessary losses.The foam fire extinguisher is more used in daily use, and the foam fire extinguisher is divided into three types. One is a hand -type foam fire extinguisher, one is air foam fire extinguisher, and the other is a cart foam fire extinguisher.
How to use foam fire extinguishers
The foam fire extinguisher is suitable for extinguishing the initial fire of oil and general substances.When using it, hold the Ring Ring of the Lighter with your hands, steadily and quickly promote the fire field. Do not carry it horizontally.When extinguishing the fire, hold the ring with one hand, hold the bottom of the tube body with the other hand, turn the fire extinguisher upside down.Note: 1. Do not cover the cover and bottom of the fire extinguisher to the human body to prevent the injury from the cover and bottom.2. Do not spray at the same time with water to avoid affecting the effect of fire extinguishing.3. When extinguishing the electrical fire, try to cut off the power first to prevent the staff from shocking.
Foam fire extinguishers cannot be used to save any fire
Scope of application: It can be used to extinguish the fire caused by the burning of wood, cotton cloth, etc. The foam fire extinguisher. This type of fire extinguisher is a chemical reaction through a mixed with an acidic solution in the tube body and alkaline solution.In addition to saving the fire of general solid substances, it can also save flammable liquid fires such as oil.However, fires with organic solvents such as alcohol, ketone, ester, and ether cannot be saved.
Principle of foam fire extinguisher
The principle of foam fire extinguishers is very simple. When using foam fire extinguishers, the fire extinguisher can spray a large amount of carbon dioxide.The interior of the foam fire extinguisher is equipped with two containers, one container is full of aluminum sulfate, and the other container is equipped with sodium bicarbonate solution.These two containers are independent, so these two kinds of chemicals do not contact each other, and no chemical reactions will occur.When the foam fire extinguisher is used, the fire extinguisher is inverted, so that the two solutions can be exposed to each other and mixed together, a chemical reaction occurs, and a large amount of carbon dioxide produces.Not only that, there are some foaming agents in the fire extinguisher to produce foam.When using the foam fire extinguisher, turn on the switch. The foam will be sprayed from the opening, covering the items, isolation of oxygen and reducing the temperature of the burning items, thereby achieving the purpose of fire extinguishing.And the sprayed foam also contains a lot of water, which does not produce any pollutants.
Foam fire extinguisher component
The aluminum sulfate and sodium bicarbonate solution are the main components of the foam fire extinguisher. The foam fire extinguisher has two containers itself. The two themselves do not contact each other. When the fire extinguishes is needed, press the foam fire extinguisher container to different acid and alkali.The two components are fused together to produce a foam chemical response, which has the effect of fire extinguishing.Foam fire extinguishers are generally used to extinguish the fire generated by solids; and the fire (referring to oil) generated by liquid.Remember to remember the fire outside, it is not recommended to use a foam fire extinguisher to extinguish the fire, you can choose other ways to ask for help.
Foam fire extinguisher application range
Because the characteristics of the foam fire extinguisher are because the foam fire extinguishing the fire, it will not produce harmful substances when extinguishing the fire, and there is no irritating taste. There will be no other residues after the fire extinguish. It is not harmful to the environment.High height can effectively reduce the smoke and toxicity in the fire field, which brings more convenience to the escape from the escape.The foam fire extinguisher can be used for some wood and cotton and other materials. However, the most suitable for using foam fire extinguishers is gasoline and diesel fire.It should be noted that the foam fire extinguisher is not suitable for some flammable fires of water -soluble, and some flammable objects, as well as a fire of electricity, which requires special attention when using the foam fire extinguisher.

Related tags： Houseware