Frequently asked questions about air filters


    The air filter is actually a kind of air filtering device, which is more used in clean workshops, clean workshops, laboratories, and clean rooms, and also used for dust prevention of electronic mechanical communication equipment. Below, I will introduce some common problems with air filters.

    1. What are the types of air filters?

    Air filters are divided into primary efficiency filters, medium efficiency filters, sub-high efficiency filters, HEPA filters, etc. In the world, G1-G4 are primary efficiency filters, F5-F8 are medium efficiency filters, and F9 -H11 is a sub-high efficiency filter, H12-H14 is a HEPA filter, and H15-H16 is a super HEPA filter.

    According to the different appearances of the filter, it can be divided into flat filters, bag filters, box filters, etc. Different outer frame materials can also be selected, such as aluminum frame, paper frame, plastic frame, galvanized Box, etc.

    2. How long is the service life of the air filter? How often does it need to be replaced?

    Due to the wide variety of air filters, the filtration efficiency of each will be different, so their service life is naturally different. In fact, the service life of an air filter is related to the environment in which it is used. For example, in a paint shop, the F6 bag filter is basically replaced in about a day. Most manufacturers wait for the filter to reach the final resistance value and replace the differential pressure gauge when it bursts. Therefore, it is recommended that factories and enterprises specify the filter replacement cycle to avoid affecting production.

    3. What is the principle of the air filter?

    The principle of air filtration mainly adopts the filtration separation method: by setting filters with different performances, the suspended dust particles and microorganisms in the air are removed, that is, the dust particles are trapped and retained by the filter material to ensure the cleanliness requirements of the airflow. The filter material it uses is a finer diameter fiber, which can not only make the airflow pass smoothly, but also effectively trap dust particles.

    4. What is the price of the air filter?

    The price of air filters in the market ranges from a few hundred to thousands of yuan, but the price is linked to many factors, such as the place of production. Although our country also has its own high-efficiency filters, it has gradually increased with the exchanges at home and abroad, China has also begun to import equipment from abroad, and the price of imported equipment will naturally be high.

    In addition, there is also a direct relationship between brand and price. Now there are too many filter manufacturers, and brands of large and small on the market are dazzled. Often the more well-known brand, the more expensive the price will be, in addition to the quality of the equipment itself is good, and to increase the visibility also requires advertising, and these are a large cost. Ordinary users will choose ordinary brand equipment, the price is right, and the quality is superior. It is not necessary to choose an international brand unless it is a user who has strong requirements for the brand.

    Generally speaking, there are many factors that affect the price of filters, but the most important impact is the impact of filter materials. The price fluctuations of filter materials are related to the price fluctuations of air filters, just like the mass production of masks this year, which leads to melt-blown cotton, The non-woven materials are out of stock, resulting in the inability to produce medium-efficiency filters, and the price has risen much. Therefore, if you want to know the price of air filters in detail, it is best to contact the filter manufacturer directly. After all, filters have their own specifications, and different specifications and prices are naturally different.