Abstract: A conveying device used in weighing apparatus for conveying powder comprising a conveying cylinder which is subjected to a vibrational movement by a vibrator to finely control the powder exited from the cylinder. Inside the conveying cylinder, there is a shaft with first and second blade segments which is actuable to rotate, thereby receiving powder from a loading hopper and exiting the powder to an outside. The vibrational movement of the conveying cylinder is irrespective of the rotational movement of the shaft, and either one or both of the conveying cylinder and the shaft is selected to operate to obtain a desired quantity of powder, ranging from a very small quantity where only the vibrator operates to a very large quantity where both the vibrator and the shaft operate.

Abstract: An automatic weighing system comprises at lease one carrier movable along a track device for carrying powder. The carrier has a base plate on which a turn table is rotatably disposed. The turn table has a plurality of cut-out portions each configured to support a container to be filled with powder. A lifting unit is provided on the base plate to support a weighing device for weighing powder. The container is supported by the lifting unit when the weighing device is in an extended position and is supported by the turn table when the lifting unit is in a retracted position. A first driving device is mounted on the base plate for driving the carrier, and a second driving device, also mounted on the base plate, is provided for controlling a rotational movement of the turn table.