How to choose a household fire extinguisher? Which household fire extinguisher is generally used

Fire extinguishers have water and dry powder fire extinguishers, dry powder fire extinguishers are low, 3 kg and 4 kg fire extinguishers are about forty or fifty yuan each, when buying, you should go to the regular fire equipment store to see, and select a fire extinguisher with a certificate that does not expire.

Common fire extinguishers that can be used at home mainly include portable foam fire extinguishers, portable carbon dioxide fire extinguishers and portable dry powder (ultra-fine dry powder) fire extinguishers.

Portable dry chemical fire extinguisherIt is suitable for the initial disaster of flammable and combustible liquids, gases and live equipment; In addition to the above-mentioned types of fires, portable dry powder fire extinguishers can also extinguish the initial disaster of solid substances, but they cannot extinguish metal combustion fires.

When using a portable dry chemical fire extinguisher to extinguish a solid combustible fire, it should be sprayed at the place where the burning is most violent, and swept up and down, left and right. If conditions permit, the user can carry the fire extinguisher and spray along the four perimeters of the combustible, so that the dry powder fire extinguishing agent is evenly sprayed on the surface of the combustible until the flame is completely extinguished.

Fire extinguishing principle. Dry powder fire extinguishing agent is a dry and easy-to-flow fine powder used for fire extinguishing, which is composed of inorganic salts with fire extinguishing effect and a small amount of additives that are dried, crushed and mixed into fine solid powder. It is a fire extinguishing agent that is widely used in fire fighting and is mainly used in fire extinguishers.

In addition to the special dry powder chemical fire extinguishing agent for fighting metal fires, dry powder fire extinguishing agent is generally divided into two categories: BC dry powder fire extinguishing agent and ABC dry powder. Such as sodium bicarbonate dry powder, modified sodium salt dry powder, potassium salt dry powder, ammonium dihydrogen phosphate dry powder, diammonium hydrogen phosphate dry powder, phosphoric acid dry powder and amino dry powder fire extinguishing agent.

Dry powder fire extinguishing agent mainly extinguishes the fire through the physical and chemical action that occurs when the powder mist sprayed under the action of pressurized gas contacts and mixes with the flame.

Household fire extinguishers generally use dry chemical fire extinguishers and carbon dioxide fire extinguishers. Dry powder fire extinguishers are easy to use, have a long validity period, and are also suitable for extinguishing all kinds of flammable, combustible liquid and flammable and combustible gas fires and electrical equipment fires. The carbon dioxide fire extinguisher is characterized by a wide range of applications, small losses caused in the process of extinguishing, and easy to clean up in the later stage.

Household fire extinguishers generally use dry chemical fire extinguishers and carbon dioxide fire extinguishers. Dry powder fire extinguishers are easy to use, have a long validity period, and are also suitable for extinguishing all kinds of flammable, combustible liquid and flammable and combustible gas fires and electrical equipment fires. The carbon dioxide fire extinguisher is characterized by a wide range of applications, small losses caused in the process of extinguishing, and easy to clean up in the later stage.

Household fire extinguishers are generally used: ABC dry powder fire extinguishers.

Portable fire extinguishers, foam fire extinguishers, carbon dioxide fire extinguishers.

1. ABC dry powder fire extinguisher.

This type of fire extinguisher is more common in the home, especially in the kitchen. Generally speaking, it has a size of 4 kg, which can basically meet daily needs. Once there is a fire in the kitchen, it is not possible to extinguish the fire directly with a foam fire extinguisher.

2. Portable fire extinguisher.

This portable fire extinguisher is relatively simple to use, and there is also a cart type, which will be relatively large.

3. Foam fire extinguisher.

At critical times, it can spray foam to achieve the purpose of extinguishing fire. If it's gasoline or kerosene.

A fire was started and foam fire extinguishers could be used. If a quilt or clothing is on fire at home, you can also use a foam fire extinguisher, including on your car. However, it is important to note that foam fire extinguishers must not be used to extinguish fires caused by electrical appliances or gases.

4. Carbon dioxide fire extinguisher.

Because it can extinguish fires with vaporized carbon dioxide, and because it is non-conductive, it can be used to extinguish fires caused by electrical appliances.

Fire extinguishers are: dry powder fire extinguishers.

Foam fire extinguishers, carbon dioxide fire extinguishers.

Clean water fire extinguisher, simple fire extinguisher.

Extended Resources:

Dry chemical fire extinguishersPrinciple: The dry powder fire extinguisher is filled with dry powder fire extinguishing agent.

Foam fire extinguisherPrinciple: There are two containers inside the foam fire extinguisher, each containing two liquids, which are aluminum sulfate and sodium bicarbonate.

solution, the two solutions do not touch each other and do not undergo any chemical reaction.

CO2 fire extinguisherPrinciple: Liquid carbon dioxide is stored in the bottle of the fire extinguisher.

Fresh water fire extinguisher

The extinguishing agent in the clean water fire extinguisher is clean water. Water has a lower viscosity, higher thermal stability, greater density, and higher surface tension at room temperature.

It is an ancient and widely used natural fire extinguishing agent that is easy to obtain and store.

It mainly relies on cooling and asphyxiation for fire extinguishing.

Simple fire extinguisherSimple fire extinguishers are lightweight fire extinguishers that have been developed in recent years. It is characterized by a fire extinguishing agent charge of less than 500 grams, a pressure of less than MPa, and a small fire extinguisher that can be refilled for one-time use.

1. Portable foam fire extinguisher.

It is suitable to extinguish the initial disaster of oil and general substances. However, the foam fire extinguisher will pop out of the cover and bottom if it is not used carelessly, injuring people; If it is sprayed with water at the same time, it will affect the fire extinguishing effect; When extinguishing electrical fires, it is easy to cause electric shock, which has a certain risk.

2. Portable carbon dioxide fire extinguisher.

It is suitable for extinguishing the initial disaster of precision instruments, electronic equipment and electrical appliances below 600 volts. Portable CO2 fire extinguishers can be used in two ways, namely handwheels and duckbills. When extinguishing fires, it is necessary to pay attention to the personnel who should stand upwind; The hand holding the spray canister should be held at the gum nozzle to prevent frostbite; After indoor use, ventilation should be strengthened, otherwise it will suffocate personnel.

3. Portable dry powder fire extinguisher.

Dry powder fire extinguishers are suitable for extinguishing initial disasters such as oil, combustible gas, and electrical equipment. When using, open the safety pin first, hold the nozzle with one hand, aim at the fire source, and pull the pull ring with the other hand to extinguish the fire source, which is very convenient to use.

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The best household fire extinguishers are water-based fire extinguishers, followed by dry powder fire extinguishers.

First use a water-based fire extinguisher, and then use it with a dry powder fire extinguisher, and the fire at home is related to electricity. The dry powder fire extinguisher is not only suitable for extinguishing the initial disaster of combustible solid organic substances, combustible liquids and combustible gases, but also has the electrical insulation performance of more than 50kv, which can be used to extinguish the initial disaster of live equipment. Suitable for household fire extinguishers.

The types of fire extinguishers and the applicable fire types are as follows:

1. Foam fire extinguisher.

The foam fire extinguisher forms a foam covering layer on the surface of the combustible, which isolates the surface of the combustible material from the air and plays the role of suffocating and extinguishing the fire. Foam fire extinguishers are suitable for extinguishing fires in wood, cotton, linen, paper, etc., as well as fires in petroleum products and oil; However, it cannot extinguish fires with water-soluble flammable and flammable liquids.

2. Dry powder fire extinguisher.

Dry chemical fire extinguishers eliminate reactive free ions from combustibles, interrupting the chain reaction of combustion. Dry chemical fire extinguishers are suitable for extinguishing combustible liquids, gases, electrical fires and fires that are not suitable for water extinguishing. ABC dry powder fire extinguisher can extinguish pure cherry blossom fire with live matter.

3. Carbon dioxide fire extinguisher.

Carbon dioxide fire extinguishers are suitable for extinguishing fires of electrical equipment, precision instruments, books and archives, as well as fires of oil, gas and some substances that cannot be extinguished with water.

Fire extinguisher. The main thing is to inhibit the chain reaction of combustion and stop combustion. At the same time, it has a certain cooling and suffocation effect.

It is suitable for fighting fires of flammable and combustible liquids, gases and live equipment, as well as fires on the surface of solid substances, especially for fighting fires in warehouses of precision instruments, computers, precious cultural relics and precious materials, and can also extinguish the initial disasters of aircraft, automobiles, ships, hotels and other places.

Fire Classification:

1. Class A fire: refers to a solid material fire. This substance tends to be organic in nature and generally produces hot embers when burned. Such as wood, coal, cotton, wool, hemp, paper and other fires.

2. Class B fire: refers to liquid fire and meltable solid matter fire. Such as gasoline, kerosene, diesel, **, methanol, ethanol, asphalt, paraffin and other fire disasters.

3. Class C fire: refers to gas fire. Such as gas, natural gas, methane, ethane, propane, hydrogen and other fires.

4. Class D fire: refers to metal fire. Such as potassium, sodium, magnesium, aluminum-magnesium alloy and other fires.

5. Class E fire: refers to the fire of live objects and precision instruments and other substances.