The primary function of an air filter is to capture dust particles and purify the air.
By utilizing porous filtration materials, an air filter captures dust from gas-solid two-phase flows, thereby purifying the gas. It finds extensive applications in clean workshops, clean factories, laboratories, and cleanrooms, as well as in dust prevention for electronic, mechanical, and communication equipment. Air filters also play a vital role in vehicles, engineering locomotives, and agricultural vehicles, primarily for filtering out dust, sand, and other impurities in the air to ensure a sufficient supply of clean air to the cylinders. This prevents the inhalation of suspended dust into the cylinders, which could otherwise accelerate wear and tear on piston assemblies and cylinders, and avoids the phenomenon of "scoring" caused by larger particles entering the space between the piston and cylinder. Furthermore, air filters effectively reduce the concentration of harmful particulates such as PM2.5, minimizing harm to human health, safeguarding passengers' respiratory health, and enhancing air quality within vehicles.