Apparatus for prewashing comminuted plastic parts

A device for prewashing comminuted plastic parts, and for separating heavy fractions and/or mineral constituents, said device comprising:

• a material feed for the plastic parts to be prewashed,
• a separation segment for the heavy fractions, the separation segment comprising a separation chamber which is filled with water during operation,
• a washing segment for further washing floating fraction coming out of the separation segment, the washing segment comprising a washing chamber which works with at least one of a water bath or shower water or spray water, and
• an outfeed segment for product washed in the washing segment, the outfeed segment comprising an outfeed chamber which is filled with water during operation,
• wherein:
• the plastic parts are moved into the separation chamber by gravity, via the material feed, and arrive in the washing chamber via a first conveyor device, as the floating fraction, and as the product are transported into the outfeed chamber, and from there move to a material outfeed via a second conveyor device;
• the first conveyor device has at least one screw conveyor;
• the separation chamber has at least one of a stirring unit, an air injection nozzle, or a water injection nozzle;
• and
• the at least one of the stirring unit, the air injection nozzle, or the water injection nozzle are projecting downward into the chamber.