Wind sifter to separate coarse and fine goods has sifter chamber with outputs for coarse fraction and for fine fraction and air mixture and separation cyclone to remove fine fraction

摘要

The sifter (1) has a sifter chamber (5) in a casing (2) with supplies (6,7) for sifting goods and air, a coarse fraction outlet (8) and at least one discharge connection (9) for a fine fraction and sifting air mixture (10). At least one fine fraction separation cyclone (11), whose inlet opening (11a) is connected to the discharge connection and whose clean air connection (11b) is connected to a fan (13) generating the sifting air current. The lower end (11d) of the separation cyclone has a fine fraction outlet (11e). The separation cyclone has at least one edge layer suction opening (11f), near its lower end, which is connected to an adjustable suction unit, containing a suction line (15) and a suction ventilator (16).