Airflow screen is a high-precision screening equipment for screening fine powder. It is widely used in chemical industry, medicine, food, papermaking, metallurgy, building materials, rubber, machinery and other industries. It can continuously screen the powdery materials with fineness ranging from 80 to 500 mesh, and the screen can be changed at will. The air flow screen (air flow screen) has high screening efficiency, large output, accurate fineness, no over diameter mixing phenomenon, no load in the vertical installation of the screen, long service life, wide fineness range, fully enclosed structure, no dust overflow, low noise, low energy consumption, continuous operation and convenient maintenance Working principle of airflow screen Theoretically speaking, the airflow screen abandons the traditional operation principle of gravitational potential energy and opens up a new way of screening work by carrying fluid kinetic energy. It uses the high-speed airflow as the carrier in the closed state to make the fully diffused powder particles spray into the screen with enough kinetic energy to achieve the purpose of rapid classification. Generally speaking, the airflow screen uses the characteristics of small and light powder particles, easy to float and good fluidity to fully diffuse them into the air flow. The powder is no longer agglomerated, but a single particle passes through the screen with the air flow in turn. Therefore, the airflow screen has large output, high efficiency, no sticking to the screen, no blocking the mesh and accurate fineness.