Air filter refers to air filter device, which is generally used for dust prevention in clean workshops, clean workshops, laboratories and clean rooms, or for electromechanical communication equipment. Often made of man-made fiber filter, the frame is made of a sturdy, moisture-proof cardboard frame. It will not deform, crack or twist under normal operating conditions. In addition, the filter material is fixed diagonally before and after the frame. The filter material and the outer frame are tightly bonded to the outer frame to prevent air leakage, and various models have different standards and performance.
Classification and usage efficiency:
1. Primary effect filter: It is mainly used for primary filtration of air conditioning and ventilation system, clean room return air filtration, pre-filtration of local high-efficiency filtration device, mainly filtering dust particles with particle size above 5μm, and testing by weight method. Also used for primary protection of multi-stage filtration systems. The filter material includes non-woven fabric, nylon mesh, aluminum mesh, stainless steel mesh, etc., and the non-woven filter material is subjected to finishing treatment to prevent secondary pollution caused by breakage of the non-woven fiber.
2. Medium efficiency filter: It is made up of man-made fiber and galvanized iron. It can be applied to industrial, commercial, hospital, school, building and other various factory air conditioning equipment. It can also be installed in gas turbine air inlet equipment or computer room to extend the service life of equipment.
3, high-efficiency filter: suitable for normal temperature, normal humidity, allowing air filtration containing traces of acid, alkali organic solvents, the product is high efficiency, but high resistance, small dust holding capacity, widely used in aerospace, aviation, electronics, pharmaceutical, Precision fields such as bioengineering.
The design of the air filter itself has also made significant progress, improving air filtration efficiency and reducing airflow resistance, thereby reducing energy consumption. In addition, the air filter has made great progress in high temperature resistance, corrosion resistance, waterproofing and antibacterial, and has met some special needs.