Method and apparatus for cleaning, distributing and aerating grain

Apparatus for cleaning and spreading particulate crops, delivered to a storage structure having an opening in an upper portion thereof, comprising;

• a frusto-conically shaped perforate screen device having perforations therein of a size to permit crops to pass thereover, but permitting other small material to pass therethrough, said screen device having an upper annular rim and a lower annular rim,
• an imperforate funnel-shaped member having an upper annular edge engaging the lower annular rim of said screen device and having a lower end portion,
• a fan assembly including, a fan housing having an inlet and an outlet, means releasably securing the inlet of the fan assembly to the lower end portion of said funnel-shaped member in communicating relation therewith, an elongate discharge conduit having one end thereof connected in communicating relation to the outlet of the fan assembly housing and having the other end thereof connected to the exterior of the storage structure,
• a vertically disposed cylindrical crop receiving member for receiving crops delivered through the opening in the storage structure, said cylindrical member including a lower wall having an opening therein,
• a shallow cup-shaped member positioned below said cylindrical member, means adjustably securing said cup-shaped member to said cylindrical member to adjustably position the cup-shaped member at a selected vertical position below the cylindrical member,
• an adjustable vertically disposed elongate control spout having an upper end and a lower end, means adjustably securing said spout to said cylindrical member and being laterally adjustable to laterally shift the spout relative to the opening in the cylindrical member and relative to the cup-shaped member, said spout being adjustable to selectively vary the cross-sectional size of the lower end thereof whereby the position of the spout and the amount of crops discharged from the spout upon the cup-shaped member may be selectively adjusted to thereby permit more even distribution of the material upon the screen device.