DEVICE FOR TREATING RECYCLING MATERIALS, PREFERABLY DEBRIS

摘要

A device for treating granular or fragmented recycling materials and recycling materials containing impurities, preferably debris. A layer thickness of the recycling materials which has been levelled over the entire feed cross section is subjected to a classifying operation in which the entire material to be classified is fed in a classifying chamber (7) into a classifying air current which is produced by a fan (12) and which discharges the impurities from the material to be classified descending in the classifying chamber (7) on the basis of their lower specific gravity and/or their larger air-flow surface and feeds them to a separate collecting chamber. In order to improve the classifying operation with low energy requirement, at least one ejection nozzle (8) for the classifying air extending over the entire width of the classifying chamber is mounted in the classifying chamber (7) beneath the feed for the material to be classified. This ejection nozzle (8) is aligned transversely to the direction of movement of the material to be classified descending into the classifying chamber (7) and with an opening (9) formed in the opposite wall of the classifying chamber (7). Connected to said opening (9) is a classifying air let-down chamber (10) for the classifying air discharging the impurities laterally, which chamber has a discharge opening (11) at the bottom for the impurities.