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United States of America Patent
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app pub date -
Mar 31, 2014
filing date -
Mar 31, 2014
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Abstract
Provided is a classifier capable of classifying smaller microparticles and obtaining a narrower particle size distribution. The classifier includes a classification rotor constituted of a cylindrical body having a plurality of classification blades in an outer circumference portion thereof and having also an opening portion that opens in one lateral face thereof along an axis of the cylindrical body, a device body that accommodates the classification rotor and holds the classification rotator rotatably about the axis and that introduces classification-target powder from the outside and feeds the powder to the outer circumference portion of the classification rotor, and a discharging portion for drawing the powder classified by the classification rotor and removing the power to the outside of the device body, wherein a rotational shaft portion extending from an open face of the constriction portion to the other lateral face of the classification rotor has a diameter that increases progressively toward the other lateral face.
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