抄録
Classification of the particles can be achieved by the active control of the suction velocity of a sand collector. In this paper, flow visualization of the classifying region was carried out by changing the injection velocity kept the suction velocity constant. The width of suction slit 100mm is used and the width of injection slit is varied to change the injection velocity. Only the smaller beads are collected from the mixed particles bed which consists of combination of the larger beads (not collected) and the smaller beads (collected). From the results of analyzing the visualized image of the classifying region, the effects of the injection velocity on the classifying volume and classifing time are discussed quantitatively.
