There are several types of fire extinguishers

There are three types of fire extinguishers, namely dry powder fire extinguishers, water-based fire extinguishers, and carbon dioxide fire extinguishers.

Dry chemical fire extinguishers can extinguish general fires, and can also extinguish fires caused by the combustion of oil and gas. It is mainly used to extinguish the initial fire of flammable liquids such as petroleum and organic solvents, combustible gases and electrical equipment. It is characterized by good fire extinguishing efficiency, simple operation and low price.

It is suitable for extinguishing Class A, B, C, E, and F fires.

Water-based fire extinguishers are used for the initial disaster of oil, flammable solids or insoluble liquids. It is characterized by high fire extinguishing efficiency, anti-re-ignition, safety and environmental protection. And in the event of a fire, the water-based fire extinguisher of the water mist type can be sprayed directly on the body, and due to the flame retardant and thermal insulation effect of its effective substance, it can play a certain degree of protection against the human body and reduce the damage of flame burning.

It is suitable for extinguishing Class A, B and F fires.

Carbon dioxide fire extinguishers are used to extinguish the initial disaster of books, archives, valuable equipment, precision instruments, electrical equipment below 6 volts and oil. It has excellent properties such as good fluidity, high ejection rate, non-corrosive container and not easy to deteriorate. Wear gloves when using to avoid touching the spray canister and jet hose to prevent frostbite.

It is suitable for extinguishing Class B, C and E fires.

There are many types of fire extinguishers, which can be divided into portable and trolley types according to their mobile methods; According to the power of driving the fire extinguishing agent, it can be divided into: gas cylinder type, pressure storage type, chemical reaction type; According to the fire extinguishing agent filled, it can be divided into:

Foam, dry powder, alkyl halide, carbon dioxide, acid and alkali, water, etc.

1. What are the types of fire extinguishers?

The types of fire extinguishers are divided into three types: dry powder, foam and gas. Dry powder fire extinguishers are divided into three types: hand-held, trolley-type and suspended; Foam fire extinguishers are divided into three types: hand-held, cart-type and air-type; There are two types of gas fire extinguishers: carbon dioxide and heptafluoropropane fire extinguishers. The above is a classification of the types of fire extinguishers.

2. What are the storage requirements for fire extinguishers?

1. Check whether the ambient temperature of the fire extinguisher is between 4-45 (or use anti-freezing measures). Do not be exposed to scorching sun, close to heat sources or violently shaken. If the temperature is too high or vibrates violently, the pressure of the gas cylinder in the fire extinguisher will increase dramatically and affect the safe use of the fire extinguisher.

Prevent the temperature from being too low, and the water in the fire extinguisher from freezing and making the fire extinguisher ineffective.

2. Check whether the fire extinguisher is placed in a humid place, whether it is affected by chemical corrosives, and whether the environment is clean, so as to prevent the fire extinguisher nozzle from being blocked, the opening mechanism from malfunctioning and reducing the service life of the fire extinguisher.

3. Check whether the fire extinguisher is obvious and safe.

3. How to maintain the fire extinguisher?

1) Regularly inspect the appearance of the fire extinguisher

1. Check whether the visible parts of the fire extinguisher are complete, whether there is any damage, and whether the assembly is reasonable.

What are the storage requirements for fire extinguishers?

2. Check the integrity of the anti-corrosion layer of the visible parts. Mild shedding should be repaired in time, obvious corrosion should be sent to the fire professional maintenance department for pressure test, and then anti-corrosion treatment will be carried out if it is qualified.

3. Always check whether the nozzle is unblocked, and dredge it in time if it is blocked.

2) Check the change in the content of the fire extinguisher:

1. Disassemble the cover every six months to check whether the fire extinguisher operating mechanism is flexible and reliable. Whether the anti-corrosion layer of the gas storage cylinder falls off and corrodes, the slight falling off should be repaired in time, and the obvious corrosion should be sent to the professional fire maintenance department for hydrostatic test. At the same time, check the weight of carbon monoxide in the gas storage cylinder, and if it is reduced by 10%, it should be repaired in time.

2. Check whether the weight of the water in the fire extinguisher meets the requirements of the nameplate or product instruction manual. If the amount of water is insufficient, it should be replenished, and if the amount of water is exceeded, it should be discharged. Also check that the sealing part of the cap is intact and that the nozzle filter device is not blocked.

3) Air tightness testing:

1. The immersion test places the gas storage cylinder upright in 50-55 clean water. The water surface should be more than 50 above the top of the gas storage cylinder, keep it for 60min and pay attention to observation. The test results should be free of visible leakage bubbles.

2. The storage test is to weigh the gas storage cylinders that have passed the immersion test one by one, put them at room temperature for 15 days, and then re-weigh them one by one. The weight of the front and rear secondary weighing should match. The weighing accuracy is 1g.

4) Water pressure detection:

1. After two years of filling the fire extinguishing agent at the factory, the water pressure test should be carried out every year;

How to maintain a fire extinguisher?

2. If there is obvious corrosion on the outside or inside of the fire extinguisher, a hydrostatic test should be carried out.

1. Dry powder fire extinguisher: suitable for oil, liquid, electrical and gas fires. Before use, check whether there is any clumping, and if so, you should deal with it in time. In addition, it is necessary to check whether the pressure is normal, and if it is abnormal, it needs to be filled in time.

2. Carbon dioxide fire extinguisher: filled with carbon dioxide, suitable for archives, instruments and equipment, low-voltage electrical appliances and oil and other fires, leaving no traces after use, and will not damage items. However, it cannot be used for fires with magnesium, potassium, aluminum, etc.

3. 1211 fire extinguisher: suitable for general fires, such as grease and other fires that cannot be extinguished with water.

What are the precautions for using a fire extinguisher:

First of all, it should be stored in a cool place, not upside down, not exposed to the sun and rain, and at the same time away from strong radiation and corrosive objects. The optimal ambient temperature for storage is between -10 and 45 degrees Celsius. In addition, it is necessary to prevent the barrel from getting wet, so as not to affect the normal use.

It is necessary to check the equipment regularly to see if there is any deformation or damage, and to observe whether the pressure is normal. If the pressure is in the green range, then the gas should be replenished. If the nozzle has problems such as cracking or deformation, it should be replaced in time.

There are many types of fire extinguishers, and there are different ways to classify them.

1.According to its mode of movement, it can be divided into: portable type and cart type;

3.According to the fire extinguishing agent filled, it can be divided into: foam, dry powder, carbon dioxide, water, etc.

1. Isolation method: Isolate or remove the burning place or object from the surrounding combustibles, and the combustion will stop due to the lack of combustible substances. In practical use, such as removing combustible, flammable and combustible items that can be close to the fire source; Move the burning object to a safe place; Close the valves of combustible gas and liquid pipelines to reduce and stop combustible substances from entering the combustion area, etc.

2. Suffocation method: prevent air from flowing into the combustion area or dilute the air with non-combustible substances, so that the combustible materials cannot get enough oxygen and extinguish. Practical application is time, such as covering objects with non-combustible or refractory substances such as asbestos blankets, wet sacks, yellow sand, fire extinguishers, etc.; Closed cabins, doors and windows of buildings, holes, etc., and the top cover of equipment containers, suffocating the combustion source.

3. Cooling method. Spraying the extinguishing agent directly onto the combustibles; to reduce the temperature of the combustible. When the temperature of the combustible material is lowered below the ignition point of the combustible substance, the combustion stops. Or spray the extinguishing agent on the combustible material near the fire source to prevent the influence of radiant heat**.

4. Chemical inhibition fire extinguishing method: spray the chemical fire extinguishing agent into the combustion zone to participate in the chemical reaction of combustion, so that the combustion is stopped. The fire extinguishing agents used in this fire extinguishing method include Chenglong brand high-efficiency water system fire extinguisher.

The four types of fire extinguishers are water-based fire extinguishers, foam fire extinguishers, dry powder fire extinguishers, and gas fire extinguishers.

1. Water-based fire extinguisher:

The first is water-based fire extinguishers. The so-called water-based fire extinguisher is a fire extinguishing agent composed of surfactants and other substances mixed with treated pure water, and usually exists in liquid form.

2. Foam fire extinguisher:

Foam fire extinguisher, when using foam fire extinguisher, can shoot a large amount of carbon dioxide and foam, they can adhere to the combustible, isolate the combustible material from the air, and at the same time reduce the temperature, destroy the combustion conditions, and achieve the fire extinguishing effect.

3. Dry powder fire extinguisher:

Dry powder fire extinguishers are more common, and we usually see portable fire extinguishers placed in the fire cabinet, most of which are dry powder fire extinguishers. Dry powder fire extinguisher has the characteristics of easy fluidity and dryness, and the dry powder fire extinguisher is filled with fine powders such as ammonium phosphate, which can effectively extinguish fires, and the effect is particularly significant in the face of the initial disaster.

4. Portable dry powder fire extinguisher:

Dry powder fire extinguishers are divided into two kinds, one is ordinary dry powder, which is widely used and cheaper, and the other is ultra-fine dry powder, which is fast in extinguishing fire, but it is more expensive than ordinary dry powder. The particles of ultra-fine dry powder are a few tenths or even one hundredth of ordinary dry powder, and at the same time, because the powder particles are smaller, there are more methods used, and they are derived: hanging, cabinet, pipe network and other forms of use.

The fire extinguisher is used as a stove

It is a fire extinguishing appliance that uses the vapor pressure of liquid carbon dioxide filled with its internal structure to spray carbon dioxide out to fight fires. Combustion is interrupted when the oxygen content is less than 12% or the carbon dioxide concentration reaches 30% 35%.

A fire extinguisher is a portable fire extinguishing tool. Chemicals are placed inside the fire extinguisher to extinguish the fire. Fire extinguishers are one of the most common fire prevention facilities, which are stored in public places or areas where fires may occur, and different types of fire extinguishers are specially designed for different types of fires.

Care should be taken in use to prevent counter-effects and risks.

Fire extinguishing equipment is an indispensable thing for fire safety that is usually ignored by others and can be used when needed. Especially in today's world, where there are many skyscrapers and rooms are decorated with a lot of wood, plastic, and fabrics, once there is a fire, there is no appropriate fire extinguishing equipment, which will cause a catastrophe. <>

There are two types of fire extinguishers.

According to its mode of movement, it can be divided into: portable type and cart type; According to the power of driving the fire extinguishing agent, it can be divided into: gas cylinder type, pressure storage type, chemical reaction type; According to the fire extinguishing agent filled, it can be divided into: foam, dry powder, halide alkane, carbon dioxide, clean water, etc.

Fire extinguisher. There are many types (three main categories): According to the way they move, they can be divided into:

According to the fire extinguishing agent filled, it can be divided into: foam, dry powder, halide alkane, carbon dioxide.

Acid, alkali, water, etc.

Chemicals are hidden in fire extinguishers to extinguish fires. Fire extinguishers are one of the common fire prevention devices and are stored in public places or places where fires may occur. Because of its simple and portable design, it can also be used by ordinary people to extinguish small fires that have just broken out.

Different types of fire extinguishers contain different ingredients and are designed for different fire alarms. Care must be taken when using it to avoid counter-effects and dangers.

1. Aerosol fire extinguisher:

1. Its small size, cold and high temperature resistance, easy to carry, non-toxic, non-conductive, fast fire extinguishing speed, micro-residue, free of annual inspection and maintenance, adults and children can be used, can be used at any time within the validity period, combined with aerosol generator and chemical self-coolant, using the heat and power generated by the reaction of aerosol generator to send the high-efficiency fire-extinguishing particles (microparticles: chemicals that cannot be seen with the eye) into the fire to extinguish the fire, so as to achieve the effect of fire extinguishing.

Portable aerosol fire extinguisher has a wide range of fire extinguishing, suitable for solid surface fire, gas fire, electrical fire, edible oil fire, liquid fire, in portability, safety and fire extinguishing ability than traditional fire extinguishers are more prosperous, compared with the previous fire extinguishers, it is more suitable for vehicle and household use, will not cause secondary pollution to the environment, fire extinguishing speed is also fast.

2. How to use aerosol fire extinguishers.

First of all, you need to take out the fire extinguisher, which can be done with both left and right hands, because it is portable, small and lightweight.

The second step is to pull open the tail safety ring and pull it out.

The third step is to aim the nozzle of the fire extinguisher, press the spray button, and automatically spray it, and spray it left and right according to the fire situation to quickly extinguish the fire.

Fire extinguishing scope: wood solid surface fire, electrical fire, kitchen waste oil fire, combustible liquid fire, metal fire can be extinguished;

2. Dry powder fire extinguisher:

1. The dry powder pressure storage fire extinguisher (portable type) is powered by nitrogen to press out the dry powder in the cylinder. It is suitable for extinguishing fires of petroleum products, paints and organic solvents. It inhibits the chain reaction of combustion and extinguishes the fire.

It is also suitable for extinguishing liquid, gas, and electrical fires (dry powder has electrical insulation properties of more than 50,000 volts). Some can also extinguish solid fires.

Pay attention to the maintenance of the fire extinguisher, and put it in a good place, dry and ventilated. Check whether the dry powder is agglomerated twice a year, and replace it in time if there is a clumping; Check the weight of the agent once a year, if it is less than the specified weight or look at the pressure gauge to drop the air pressure, it should be filled in time.

2. When the dry powder trolley is used, first quickly push the trolley fire extinguisher to the near fire source, pull out the jet hose and straighten it, pull out the safety pin, open the straightening door handle, aim at the root of the flame, make the powder mist sweep the key flame, pay attention to cutting off the fire source, control the flame to return, and push forward to extinguish the fire from near and far.

3. Dry powder fire extinguisher (MFZ) has an effective range of 2-3kg, a range of 4-5kg is 4m, and the time is 8-9 seconds. The 8kg range is 5m, the time is 12 seconds. (MFTZ) 35-50kg cart has an effective range of 8m and a time of 20 seconds.

The 70kg cart has a range of 9m and a time of 25 seconds.

3. Carbon dioxide fire extinguisher.

Carbon dioxide fire extinguishers are used as fire extinguishing agents to extinguish the carbon dioxide gas stored in the high-pressure gas cylinder, carbon dioxide does not leave a trace after extinguishing the fire, suitable for extinguishing valuable instruments and equipment, archives, computer room fires, it is not conductive and is also suitable for extinguishing live low-voltage electrical equipment and oil fires, but it can not be used to extinguish potassium, sodium, magnesium, aluminum and other material fires.