Quantitative feeder mainly consists of two parts: the electrical control part and the mechanical part. The electrical control part mainly consists of components such as the control cabinet ( box), weighing control instrument, frequency converter, weighing sensor, speed sensor, and rotary encoder; the mechanical part includes the drive device, scale body, scale base, driving roller, roller, annular belt, belt load measuring device, belt speed measuring device, belt tensioning device, cleaning device, distributor, and dust collection hood.