Armost airflow separator differs from the traditonal zigzag air separator by adopting a closed-loop design, which allows recirculation of air current within the machine, greatly increasing efficiency and reducing energy consumption. Our airflow separator has rotary gate valves to prevent external influence on internal air currents and air current leakage. Meanwhile, our air flowseparator adopts modular design, making it possible to separate 2 or 3 types of materials, and with frequency conversion control, the airflow can be adjusted according to different materials to achieve the best separation result.