After WSA horizontal air screen works WSA horizontal airflow shaker screen in a cylindrical shape, placed in the body, the material through the screw conveyor system, and the mixed gas stream, atomizing barrel into the network; wind turbine blade by screen cylinder the material as well as by the centrifugal force and cyclones propulsion, thereby enabling the material jet over the net, fine material discharged from the outlet, not over the net material discharged from the tube wall along the network of coarse material outlet. WSA Horizontal airflow characteristics of a screen can be single or multi-machine supporting the use of long-term continuous operation, safe and reliable; 2, the new spherical bearings, extend the service life; 3, the whole small size, light weight, smooth, vibration-free noise, good airtight performance, no dust, high efficiency; 4, caking materials are then broken pure function; 5, mesh erosion by the cyclone, can automatically clear net; 6, new housing construction, easy to install, easy to control ; 7 machine with pneumatic conveying system can support, directly into the wind path string, resource conservation; 8, the new design: The gas protection system will be able to purify the air transport to both devices, can effectively reduce the equipment during operation production temperature; forming a gas barrier layer on the bearing, so as to prevent entry of dust, effectively extending bearing life, reduce maintenance frequency, improve work efficiency; 9, can be specially designed to meet special needs. WSA uses horizontal airflow sieve used in metallurgy, mining, pharmaceutical, food, chemical, metal and non-metallic powders and other industries.