PURPOSE: To unify the charging amount of the grain by a method wherein an openable partitioning plate is provided in an opening and closing gutter covering around a screw conveyor at each boundary between the tanks in the captioned device in which a horizontal screw conveyor is provided traversingly at the upper position of the plural reserving tanks installed in juxtaposed manner.

CONSTITUTION: The reserving tanks 1W4 are provided in parallel in mutually connected conditions and the horizontal feed screw conveyor 9 is installed at the upper position of respective tanks 1W4. The partitioning plates 11, movable upwardly and downwardly in respective shutter cases provided at the end positions of respective tanks 1W4 with respect to the conveying direction of the conveyor 9, are attached to the gutter around the screw conveyor. The conveyance of the grain by the conveyor 9 is intercepted by moving the partitioning plate 11 upwardly by a proper driving means. When the conveyance is intercepted by the partitioning plate 11, a spring 20 is compressed simultaneously with the upward movement of the partitioning plate 11 and thereby opening the opening and closing gutter 17 against a balance weight 22 in accordance with the pressure of the grain, thus, the device is constituted so as to be capable of filling the tanks 1W4 with the grain through inflow ports 14.