Patent ID: 6113335
Filing Date: 2000-09-05
Classification: B65G

Abstract:
An unloader wherein a screw feeder is so mounted on a vertically conveying section that the former can, relative to the latter, ascend and descend freely from and to its mounted position and bulk cargo is fed into a receiving space of the vertically conveying section through a discharge port made in the screw casing of the screw feeder, characterized by:the discharge port which is positioned by discharge blades of the screw feeder and extended downward by the length of ascending/descending stroke of the screw feeder; anda blocking casing which is mounted on the vertically conveying section so that the outer surface of the screw casing comes in sliding contact with the blocking casing and the blocking casing closes generally the lower half of the discharge port while the screw feeder is in its mounted position.