Grain weighing device

The invention discloses a grain weighing device. The grain weighing device comprises a granary, a discharge port is arranged below the granary, a weighing hopper is arranged below the discharge port and connected with a weighing device body, the weighing hopper is of an axisymmetric structure as a whole, the symmetry axis is in the horizontal direction, the left and the right of the weighing hopper are respectively provided with a round side plate, three baffles are arranged between the two side plates, a material separating hopper is formed by every two adjacent baffles, the left side plate and the right plate in an enclosing mode, a horizontal shaft hole is formed in the center of the weighting hopper, a rotary shaft passes through the shaft hole, the lower portions of the two ends of the rotary shaft are respectively supported by a sensor, and the sensors are connected to a digital processing device and a displayer. Through rotation of the weighing hopper, the weighing work for the next batch can be carried out when the last batch of materials are discharged, and thus the grain weighing device is high in weighing efficiency, simple in structure and convenient to operate and further reduces labor intensity of workers.