| 摘要 |
<p>PROBLEM TO BE SOLVED: To enhance the classification accuracy by preventing such a large diameter particle that enters the central part of the classification zone from being drawn into the center side due to dispersion of an inertial force. SOLUTION: The thickness of a classification vane 6 is gradually made larger from the center side to the peripheral side. Then, the change of airflow between the classification vanes 6 and a passing cross sectional area on the peripheral side and the center side is made small to restrain the increase of an entraining force acting on such powder particles to be classified that enters the center part because of dispersion of the inertial force, due to the increase of the flow rate of particles, thus preventing such rough powders that surpass a certain particle diameter from being drawn into the center side.</p> |
