Patent ID: 11871700
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC A | IPC A

Claim 0:
1. A system for cleaning a flow of harvested crop, the system comprising:
a cleaning zone having an upstream part and a downstream part;
a conveyor arranged to convey the flow downstream of the conveyor into the cleaning zone into which the flow is intended to be discharged, the conveyor having a downstream end;
a suction cleaning unit located above the cleaning zone and operable to generate an upward air flow through the cleaning zone for extracting residues contained in the discharged flow; and
at least two conveying rolls disposed behind the downstream end of the conveyor in the upstream part of the cleaning zone in order to be fed with the flow of harvested crop discharged from the conveyor, the at least two conveying rolls and the conveyor conveying the harvested crop in a common direction, the at least two conveying rolls arranged to convey the crop flow and to discharge it into the downstream part of the cleaning zone, wherein passages are formed between or through the at least two conveying rolls, the passages being arranged to allow the upward air flow therethrough for extracting residues from crop present on the at least two conveying rolls, the flow of harvested crop leaving the conveyor being engaged by the upward air flow passing through the conveying rolls, and wherein the at least two conveying rolls are arranged directly under the suction cleaning unit.