Classification And Selection Of Air Filter Cotton

Air Filter Cotton is a kind of filter medium, which mainly filters and purifies polluted gas, exhaust gas and dust particles in the air. Now let's understand the classification of air filter cotton and the selection of air filter cotton.

According to the efficiency, the air filter cotton is divided into two types: primary filter cotton and medium - effect filter cotton. According to different materials, the Air Filter Media can be divided into four types: synthetic fiber filter cotton, nonwoven filter cotton, glass fiber filter cotton, and activated carbon filter cotton.

Everyone knows that the air contains a lot of dust particles, and the function of air filter cotton is mainly to filter the dust particles in the air. According to European standards, air filter cotton can be divided into: G1, G2, G3, G4, F5, F6, F7, F8.

Primary ( coarse ) filter cotton mainly filters dust particles larger than 5 μm, and is generally used at the suction inlet of ventilation equipment and air control system as a pre - filter or coarse filter where it is directly in contact with outdoor air.

The Air Filter Cloth Material is also used as a filter material for filter materials such as plate filters, folded plate filters, and bag filters. Medium - efficiency filter cotton mainly filters dust particles larger than 1 μm. It is generally used for secondary filtration after coarse - efficiency filtration, and is also mostly used as filter material for plate filters. It is generally used in the surface coating industry and is specially designed for the filter at the end of the spray booth. It is made of high - performance hot - melt non woven fabrics composed of anti - fracture synthetic fibers. It adopts an incremental structure, which is the fiber in the direction of pure air. The density gradually increases, the filtration efficiency also increases, and the service life is longer.

When choosing air filter cotton, pay attention to the following aspects:
1. Grasp the main influencing factors for selection, such as high-temperature gas, flammable dust, etc.;
2. The filtration performance of filter cotton should meet the conditions and special requirements in the production process;
3. Gas temperature: The temperature of dust-containing gas is a very important factor. Generally, the gas below 130°C is called normal temperature gas, and the gas above 130°C is called high - temperature gas. Therefore, the selection of filter materials can also be divided into for these two categories, that is, normal temperature filter material and high temperature filter material;

4. Humidity of gas: Dusty gas can be divided into three categories according to its relative humidity. When the relative humidity is below 30 %, it is dry gas. Between 30 % and 80 % is the normal state, and above 80% is high - humidity gas. For high - humidity gas, when the current period is in a high temperature state, condensation will occur when the gas is cooled, which will cause fouling and blockage on the surface of the filter bag. And it is easy to corrode the material, which is what we need to pay special attention to when choosing;
5. Choose filter materials with longer service life as much as possible, which can not only save operating costs, but also meet the emission requirements;
6. Price comparison, beware of some unscrupulous merchants taking advantage of price discounts to sell some inferior products. When choosing, shop around and don't be greedy for cheapness.