PIN CONVEYOR FOR PASTY MATERIALS SUCH AS ANIMAL WASTE

摘要

A pin conveyor (1) for pasty materials such as animal waste including a housing (3) with a cylindrical inner surface (5) extending along and about an axis (7). Within the housing surface (7), a shaft (11) is mounted for rotation about the axis (7) and has a plurality of pins (13) attached to it in a substantially helical pattern. The pins (13) have sleeve members (21) slidably mounted about them wherein in operation, the sleeve members (21) are centrifugally impelled outwardly of the pins to contact and scrape clean the housing surface (5) as the shaft (11) is rotated about the axis (7). The cylindrical outer surfaces (21") of the sleeve members (21) preferably overlap or are at least tangent to one another when viewed in a plane (P) perpendicular to the rotational axis (7) so as to effectively contact and scrape clean the entire housing surface (5) surrounding them.