| 摘要 |
e classifier with a cyclone has an inner cylinder (12) which has a length similar to that of the outer cylinder (10) and has a gas outlet (12c). And the classifier has equi-spaced gas discharge holes (13a,13b,13c) on the inner cylinder (12) so that the velocity of the outgoing gas is gradually increased from the lower part of the inner cylinder (12) to the top part. The classifier can make the outgoing gas move with an equal accelerating velocity by varying the flow rate or crosssectional area of the fluid according to the structure of the inner cylinder. Especially the classifier has an excelent effect in case that the gas is supplied discontinuously in the unit time.
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