Used for the efficient handling of grain and other granular materials. Its structure comprises a head made of resistant steel sheet, a tail and a variable number of intermediate cases, equipped with a removable bottom for easy maintenance. The conveyor can be configured with single, double or pit receiving boxes. The conveyor is operated by a fin chain designed to cover the width of the case, which runs on a special guide in polyline placed on the bottom. The chain is driven from the head by a control gear, connected to the tail by a plain lead. The chain returns via a guide on top of the conveyor’s housing.