A device for the separation of charging material into fine material and coarse material

摘要

The invention relates to a device for separating of feed material (6) into fine material (29) and oversize material (30) with a along an axis (8) arranged cylindrical classifying zone (24), with a distribution channel (9) for the supply of sifting air (15), which extends over the circumference of the cylindrical classifying zone (24) extends. The classifying zone (24) and the distributor channel (9) are provided by a wall (12) separated from one another, the for the entry of the sifting air (15) into the classifying zone (24) has openings (23). Furthermore, the device comprises a material inlet (4), which is to provide the apparatus with feed material (6) axially on the cylindrical classifying zone (24) is connected, a coarse material outlet (26), the opposite side of the material barrel (4) is fixed axially to the classifying zone (24), and a fine material outlet (5) for deriving of the fine material (29) from the classifying zone (24). In order to standardize the speed of entry of the classifying air into the classifying zone is proposed according to the invention that the flow cross section of the distributor duct (9) in the direction of flow (15) decreases.