APARELHO DE DISCRIMINACAO DE COR DE PARTICULA, E, DISPOSITIVO DE CONTROLE AUTOMATICO

摘要

A particle color discriminating apparatus including a vibration feeder for feeding particles to be discriminated, a shooter for causing the particles from the feeder to flow downwardly, photoelectric detecting means located in the vicinity of a path of flow of the particles in a predetermined locus, an air ejector arranged beneath the photoelectric detecting means and control means for controlling the actuation of the air ejector in accordance with an output signal of the photosensitive detector is provided with an automatic control device operative to control the amount of particles supplied by the vibration feeder in accordance with changes in the proportion of particles distinct in color from the particles of interest in the particles supplied.