Where to aim a fire extinguisher when putting out a fire

The root of the fire should be aimed at the root of the flame, but it should be noted that if it is a paper flame, it cannot, because it will 'spray' the paper with fire to other places. Where the burning is the most violent, when using a portable dry powder fire extinguisher to put out a solid combustible fire, it should be sprayed at the most burning place, and shot up and down, left and right. If conditions permit.

A fire extinguisher is a portable fire fighting tool. Put chemicals in fire extinguishers to put out fires. When putting out fire, keep about 5 meters away from the burning place. If you are outdoors, you should choose to spray in the upwind direction. The operator should first pull out the safety pin on the opening handle, then hold the nozzle at the front end of the spray hose, press down the opening pressure handle with the other hand, and quickly aim at the root of the flame to extinguish the fire.

Dry powder fire extinguisher is a kind of fire extinguisher. It is equipped with dry powder fire extinguishing agent such as ammonium phosphate. This dry powder fire extinguishing agent is easy to flow and dry. It is composed of inorganic salt and crushed and dried additives, which can effectively extinguish the initial fire. It is mainly used to put out solid material fires (Class A), flammable liquid fires (Class B), flammable gas fires (Class C) and general electrical fires.

The fire extinguishing principle of the foam fire extinguisher is that when the fire is extinguished, a large amount of carbon dioxide and foam can be ejected. It is mainly used to put out Class B fires, such as gasoline, diesel and other liquid fires; it can be used to put out Class A fires, such as fires caused by the burning of solid materials such as wood and cotton. It cannot extinguish fires with water-soluble flammable and flammable liquids (such as alcohols, esters, ethers, ketones, etc.) and Class E (charged) fires.

When extinguishing a fire, carbon dioxide gas can exclude air and surround the surface of the burning object or distribute it in a relatively closed space, reducing the oxygen concentration around the combustible object or in the protective space, producing suffocation and extinguishing the fire. It can be used to extinguish the initial fire of books, archives, valuable equipment, precision instruments, electrical equipment below 600 volts and oil.

The clean water fire extinguisher is filled with clean water. In order to improve the fire extinguishing performance, an appropriate amount of additives, such as antifreeze, wetting agent, and tackifier, are added to the clean water. It is mainly used to fight solid material fires, such as the initial fires of wood, cotton, textiles, etc.

Substances that can effectively destroy combustion conditions in the combustion area to inhibit or terminate combustion. The most common fire extinguishing agents are water fire extinguishing agent, dry powder fire extinguishing agent, foam fire extinguishing agent, carbon dioxide fire extinguishing agent, haloalkane fire extinguishing agent.

The chemical foam is light, has a certain foaming ratio, strong burning resistance, good durability, can cover the liquid surface on fire, and has a good covering and cooling effect.

It has the functions of covering, cooling and extinguishing, and can effectively extinguish flammable and combustible liquid alkanes, but it is not suitable for water-melt liquids and gas alkanes such as alcohol, ketone, and ether.

It is suitable for fighting fires of electrical equipment, precision instruments, books and archives, as well as fires of small oil, gas and some substances that cannot be put out with water. However, it is not possible to put out fire areas with hydrides such as metal potassium, sodium, magnesium, aluminum, etc., and it is not easy to put out some fires that can burn raw materials in an inert medium and some materials (such as cotton) internal flame retardant.

The leakage protector, referred to as the leakage switch, is also called the leakage circuit breaker. It is mainly used to protect the equipment from electric shock and electric shock to persons with fatal danger. It has overload and short-circuit protection functions, and can be used to protect the circuit or motor. Short circuit can also be used for infrequent switching of the line under normal circumstances.

Gas masks are personal special labor protection products, personal protective equipment to protect people's respiratory organs, eyes and face, and prevent poisonous gas, dust, bacteria, toxic and harmful gases or steam and other toxic substances. Gas masks are widely used in petroleum, chemical, mining, metallurgy, military, fire protection, emergency and disaster relief, health and epidemic prevention, technology and environmental protection, machinery manufacturing and other fields.