air pump is a kind of dual-purpose device of blowing and inspiration. It is chiefly used in paper cutter, screen printing machine, photography plate cutter, cigarette filter tip forming machine, environmental protection water treatment, dust removing and ventilating, electroplating groove fluid agitating, fish farming oxygen adding, injection machine, automatic feeding drier, atomization drier, liquid loading machine, powder loading machine, electric welding equipment, film machinery, paper transport, clothes finishing and ironing, drying washing, gas conveying, feeding collection etc.