Vortex fan is a dual purpose ventilation air source, which is mainly used for increasing oxygen content in fish farming, paper cutting machines, combustion and oxygen reduction machines, roll machine filter molding machines, electroplating tank liquid mixing, atomization and drying machines, water treatment and gas explosion, screen printing machines, photographic plate making machines, automatic feeding machines, liquid filling machines, powder filling machines, welding equipment, film machines, paper conveying, cleaning of dry cleaning clothes, air dedusting, drying bottles, gas conveying, feeding Collection and other aspects.