| 摘要 |
<p>PROBLEM TO BE SOLVED: To exactly set a sorting point and to perform sorting with high accuracy by arranging a raw material feeding nozzle on the upper surface part of a pneumatic sorter, arranging a Coanda block on the side face part of the feeding nozzle, and also arranging a powdery raw material feeding part and a high pressure air introducing pipe in the back end part thereof. SOLUTION: After raw material powder is fed from a raw material feeding port 40 and is discharged from the outer periphery of a high pressure air introducing pipe 41 in the lower part of a raw material introducing port 42, it is instantaneously introduced into a pneumatic sorter 1 from a raw material feeding nozzle 16. At this time, when powdery particles are introduced into a sorting chamber 32 equipped with a Coanda block 26 from an opening of the raw material feeding nozzle 16, particles are dispersed according to particle size without flying loci of particles being disturbed to form flows of particles. As a result, after sorting edges 17, 18 are moved in the directions along the streamlines of the particle flows, end positions of the edges are fixed to set them at prescribed sorting points. That is, by the simultaneous movement of the sorting edge blocks 24, 25, the directions of the edges are made to be along the flow directions of the particles flying along the Coanda block 26.</p> |
