Basic principle of air filter

With the acceleration of industrialization, the problem of environmental pollution is becoming more and more serious, and the air quality is gradually declining. In order to improve air quality and ensure people's health, air filters have become indispensable equipment in many industries. This article will introduce the filtration principle of the air filter to help everyone better understand this equipment.

The main function of the air filter is to filter liquid water, liquid oil droplets and solid particles in the compressed air, so as to ensure the cleanliness of the compressed air. Its filtration principle mainly involves inertia principle, centrifugal force and filter element filtration.

The principle of inertia is that large particles move in the air stream. When the air stream encounters an obstacle, the particles deviate from the air stream due to inertia. The application of this principle in the air filter is manifested in: when the compressed air passes through the guide plate of the filter, the large particles move in the tangential direction due to the action of inertia, separate from the air stream, and are finally thrown to the inner wall of the water cup.

Centrifugal force refers to the high-speed rotating air flow, liquid water and oil and large impurities are thrown out under the strong centrifugal force. In the air filter, this principle is achieved through the bevel teeth on the deflector. The compressed air produces a strong rotation under the action of the helical teeth, so that the liquid water oil and larger impurities are thrown to the inner wall of the water cup, so as to achieve the purpose of separation.

Filter element filtration refers to filtering out small particles in the air through the microporous structure of the filter element. The filter element is usually made of porous material and has a large surface area to effectively capture particulate pollutants in the air. When compressed air passes through the filter, fine particles will be captured by the microholes of the filter, so as to achieve the purpose of purifying the air.

To sum up, the filtration principle of the air filter is mainly through the principle of inertia, centrifugal force and filter element filtration, separating the liquid water, liquid oil droplets and solid particles in the compressed air to ensure the cleanliness of the compressed air. In practical applications, air filters are widely used in air conditioning, ventilation, air purification and other fields to provide people with a healthy and comfortable breathing environment.