Transport device, transport method and system for reclaiming aggregates

A transport device for conveying a flowable material, the device comprising a screw conveyor for collecting the flowable material from a collecting zone and transporting the flowable material towards a destination zone, a straight shaft extending along a longitudinal axis from the collecting zone to the destination zone, the screw conveyor comprising a spiral which is wound on the shaft and an outer casing which at least partially houses the spiral, the spiral having a plurality of turns, the outer casing having an inner surface facing respective head surfaces of at least some turns of said plurality of turns, a compartment being defined between two consecutive turns of said plurality of turns and the outer casing, wherein the outer casing is made at least partially with a deformable polymeric material in such a way that the outer casing deforms radially and reversibly towards the outside when a solid particle of said flowable material, conveyed by the spiral, is interposed between a head surface of a turn of said plurality of turns and the inner surface of the outer casing, in order to allow said solid particle to be transferred from one compartment to a further compartment adjacent to said compartment by passing between the head surface of the turn and the inner surface of the outer casing, and wherein the turns of said plurality of turns are made of a deformable polymeric material, so as to be reversibly bent when a solid particle conveyed by the spiral is interposed between a head surface of a turn of said plurality of turns and the inner surface of the outer casing.