What Is a Pneumatic Filter?

An air filter is a device that captures dust from a gas-solid two-phase flow through the action of a porous filter material and allows the gas to be purified. It purifies the air with low dust content and sends it into the room to ensure the process requirements for clean rooms and the air cleanliness in general air-conditioned rooms. ^[1]

Air filter (Air Filter) refers to air filter device, generally used in clean workshops, clean plants, laboratories and clean rooms, or used for dust prevention of electronic mechanical communication equipment. There are primary effect filters,

GB / T 13554-2008 high efficiency air filter

GB / T 14295-2008 air filter

GB / T 15187-2005 wet dust collector performance measurement method

GB / T 17939-2008 nuclear high efficiency air filter

GB / T 6165-2008 High efficiency air filter performance test method Efficiency and resistance

HG / T 2061-1991 air filter for rubber machinery

JB / T 6417-1992 air filter for air conditioner

JB / T 7374-1994 Technical conditions of pneumatic air filter

JG / T 22-1999 Performance test method for air filters for general ventilation

TB / T 3135-2006 locomotive, motor vehicle body air filter

The prototype of the air filter is a breathing protection device that people use to protect their breathing. According to records, in Rome as early as the first century, everyone used a mask made of hemp to protect them during the purification of mercury for a long time after that. Air filters have also made progress, but they are mainly used as respiratory protection in some hazardous industries, such as the production of hazardous chemicals. In 1827, Bupon discovered the movement law of tiny particles, which made people have a further understanding of the mechanism of air filtration. The rapid development of air filters is closely related to the development of the military industry and the electronics industry. In the 1950s, the United States conducted in-depth research on the production process of glass fiber filter paper, which improved and developed the air filters. In the 1960s, HEPA filters came out; in the 1970s, HEPA filters using micro glass fiber filter paper as the filter medium, The filtration efficiency of particles with a diameter of 3 microns is as high as 99.99998. Since the 1980s, with the emergence of new test methods, improved use evaluations, and increased requirements for filtration performance, it has been found that HE-PA filters have serious problems, so they have produced higher-performance ULPA filters. At present, countries are still working hard on research, and it is estimated that more advanced air filters will soon be available.

The design of the filter itself has also made significant progress, the most important of which is the removal of the partition plate, that is, the development of the filter without a partition. No partition filter not only eliminates the danger of the partition plate damaging the filter medium, but also effectively increases the filtering area, improves the overshaking efficiency, and reduces the airflow resistance, thereby reducing energy consumption. In addition, air filters have also made great progress in terms of high temperature resistance, corrosion resistance, water resistance, and antibacterial, etc., and meet some special needs. .

The design of the air filter itself has also made significant progress, the most important of which is the removal of the partition plate, that is, the development of the filter without a partition. The partitionless filter not only eliminates the danger of the partition plate damaging the filtering medium, but also effectively increases the filtering area, improves the filtering efficiency, and reduces the airflow resistance, thereby reducing energy consumption. In addition, air filters have also made great progress in terms of high temperature resistance, corrosion resistance, water resistance, and antibacterial, etc., and meet some special needs.