Compressed air enters the high pressure
chamber of the air knife through the air inlet (1), and the air flow passes through a thin nozzle (2) to form a balanced air flow sheet in the length direction of the air knife.Because the compression ratio of the chamber (3) to the high-pressure air flow is 40:1, so that the loss of the air flow velocity is the smallest, while the pressure is the largest, then a sheet of air flow with strong impact force and minimum shear force is produced, thus achieving the purpose of water removal, dust removal, drying and cooling.