Auger conveyor with removable screen attachments and method of using same

A crop cleaning device comprising:

• a housing having first and second ends, and first and second longitudinal opposing sides, said housing having an upper housing, and a lower housing;
• an upper fighting mounted in the upper housing;
• a lower fighting mounted in the lower housing;
• a lid having first and second ends,. and first and second longitudinal opposing sides configured to cooperate with said first and second ends and first and second longitudinal opposing sides of said housing;
• a hinge connecting said first side of said housing to said first side of said lid;
• a crop entry port positioned in said upper housing, partially on said first end of said housing and partially on said first end of said lid;
• a cleaned crop exit port, positioned in said upper housing, partially on said second end of said housing and partially on said second end of said lid;
• an upper screen secured in the lid, and a lower screen secured in the upper housing separate from the upper screen, whereby when the lid is closed the upper screen and the lower screen define a screened area, within said upper housing and said lid, said screened area defining a path surrounding said upper fighting, between said crop entry port and said cleaned crop exit port;
• and
• a waste exit port situated in said lower housing towards said second end of said housing,
• wherein, when the crop to be cleaned is propelled along said path within said screened area, from said crop entry port through said cleaned crop exit port, waste materials that pass out of said screened area fall into said lower housing are augured towards and through said waste exit port by said lower fighting.