Crop dust separation system

A system for separating crop dust from crop residue produced during a harvesting operation using a combine;

• the system comprising:
• a) an attachment member for use with the combine, the attachment member comprising:
• a suction fan to generate a negative pressure to draw an air flow comprising at least a portion of the crop dust separated from the crop residue;
• and
• a cyclone unit in communication with the suction fan, the cyclone unit having an inlet for receiving the air flow comprising the separated crop dust drawn by the suction fan, and an outlet having a turning airlock mechanism configured to maintain the negative pressure while discharging the separated crop dust through the outlet;
• b) a shroud member fastened to the attachment member and extending downward to form a negative pressure chamber;
• and
• c) a container for collecting the separated crop dust exiting the outlet of the cyclone unit;
• wherein the attachment member is configured to be attached to the rear end of the combine,
• wherein the attachment member comprises a base member/unit having an outer surface, a bottom surface and side walls, wherein the cyclone unit is attached to the outer surface of the base member;
• wherein the suction fan is placed in a housing attached to the outer surface of the base member, the housing having an inlet for drawing the airflow comprising the separated crop dust, and an outlet in communication with the inlet of the cyclone unit;
• and
• wherein a screen is attached to the bottom surface of the base unit.