| 摘要 |
PROBLEM TO BE SOLVED: To provide a jet mill which keeps simpler and more compact structure than conventional one and provides improved classification precision by preventing so-called plunging phenomenon (the phenomenon wherein uncrushed matter flows into a classification zone). SOLUTION: The jet mill is provided with: a mill body 1 having a hollow chamber a; a raw material supplying means 3 introducing a raw material to the hollow chamber a; a discharging part 2 installed nearly in the center of the hollow chamber a; and a jetting means 4 forming a swirling flow in the hollow chamber a, and the jet mill forms a crushing zone for crushing the raw material introduced by the swirling flow and the classification zone for classifying the crushed matter and discharging it from the discharging part 2, wherein the discharging part 2 has a cylindrical part 20 protruded into the hollow chamber a and provided in a standing condition nearly in the center of the lower wall part 11, and a flange 5 disposed on the outer circumference of the cylinder part. COPYRIGHT: (C)2008,JPO&INPIT |
