The synthetic foam fire extinguisher is filled with a mixture of sodium bicarbonate and foaming agent, and a glass bottle with an aqueous solution of aluminum sulfate. Generally, when in use, the cylinder is upside down. Below, we look at the next, foam fire extinguishing agent manufacturers to introduce the principle of synthetic foam fire extinguisher.

After mixing sodium bicarbonate and aluminum sulfate solution, a chemical reaction occurs to produce carbon dioxide gas foam, the volume expands 7 to 10 times, and the weight is generally 0.1 to 0.2. The specific gravity of gasoline is 0.78 and that of water is 1.0. Since the gravity of the foam is small, it can cover the surface of flammable liquids. On the one hand, it reduces the surface temperature of the liquid (heat absorption), reducing the rate at which the liquid evaporates. On the other hand, an insulating layer is formed to bring oxygen into contact with the liquid surface, and then the fire is extinguished. It can be seen that foam fire extinguishers are very effective in extinguishing oil fires.

The principle of synthetic foam fire extinguishing agent is similar to that of foam fire extinguishing agent. A large amount of foam is injected into the fire area to dilute the oxygen content in the fire area to achieve the effect of closing the combustion surface, isolating the object from the air, and suffocating the flame.

Foam fire extinguishing agent manufacturers introduce foam fire extinguishing agent is commonly used in coal mine fire extinguishing, synthetic foam fire extinguishing agent for oil, oil, oil depot, refinery, airport, ship, petrochemical and other insoluble water oil fire and common solid fire. Other fire extinguishing products shall not be mixed during storage, use and transportation, and shall be placed in a cool and dry place. Make sure it is within the specified temperature range.

At present, there are more and more fire extinguishing agents on the market. In the selection process, it is necessary to understand the performance and environment of the fire extinguisher. Don't think that a fire extinguisher can put out the fire anywhere, which is unrealistic.

Let's look at the combination principle of dry powder extinguishing agent and foam extinguishing agent introduced by foam extinguishing agent manufacturers?

The foam fire extinguishing agent manufacturer introduces the combination principle: when the initial fire fighting place is opened, the power cylinder is opened, and the gas supply and storage device carries the powder into the fire scene through the helium gas reducing valve. Therefore, after the powder contacts, the fine powder particles react with the combustion, capture the active hydrogen and oxygen molecules, generate inactive water, cut off the fire source and combustion from the root, and interrupt the combustion chain reaction. After the foam is sprayed on the combustion surface, it flows and diffuses rapidly on the combustion surface to form a film covering the combustion surface, which isolates the combustion from the air, prevents the combustible steam from rising, and effectively prevents the combustion from burning again.

For example, in an area where flammable and explosive liquids are leaking, a dry powder fire extinguisher can be used to extinguish the fire in advance, and then foam can be sprayed to prevent the area from catching fire again. Fire extinguishing mechanism of two fire extinguishing agents (powder and foam). The combination of these two fire extinguishing systems can foster strengths and avoid weaknesses to form a dual system fire extinguishing, which not only has good fire extinguishing performance, but also has a wide range of uses. It can be used in petroleum, chemical, smelting and other industries, storage and transportation, airports, oil fields, offshore drilling platforms, warehouses, substations And other places.