| 摘要 |
PROBLEM TO BE SOLVED: To provide a classifier for powder and particles, wherein an inner cylinder for separation and jetting secondary air is combined with an outer cylinder, a primary separation part and a secondary separation part are provided in the outer cylinder, and a high efficiency of classification can be obtained. SOLUTION: In the outer tube 1, an air exhaust port 7 and a coarse grain-takeout port 6 are provided respectively in the upper part and the lower end of a cylindrical body. A charging tube 3 is deeply inserted from the top face of the outer cylinder 1 with a top connection port 13 left in the outside cylinder. The separation inner cylinder 2 of a hollow short cylinder, having a secondary air-discharge port 10 on its bottom face is provided near the lower part of the outer cylinder 1. An ejection port 14 in the lower end of the charging tube 3 is faced at an interval to a collide-separation face 11 of the upper surface of the inner cylinder 2. A secondary air-injection pipe 12 is connected to the lower face of the inner cylinder 2. A primary separation part 8 is formed between the ejection port 14 of the charging tube 3 and the upper face of the inner cylinder 2. A secondary separation port 9 is formed between the peripheral wall of he inner cylinder 2 and the outer cylinder 1. COPYRIGHT: (C)2004,JPO
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