CYCLONE-TYPE POWDER CLASSIFYING DEVICE

摘要

[Problem] To provide a cyclone-type powder classifying device that can further remove powder of coarse particles from powder collected within a centrifugal chamber to separate out powder of a more desired particle size. [Solution] A tapered part (53) that widens toward the bottom thereof is extended from the bottom of a centrifugal chamber (46), and a first cylindrical collector (39) is connected to the bottom of the tapered part (53). A second cylindrical collector (55) that narrows toward the end thereof is accommodated inside the first cylindrical collector (53). Further, by introducing an additional airflow (S) into the centrifugal chamber (46), intermediate particles of a prescribed weight or less are stirred upwards and separated to the outside via a lower end opening (55c) of the second cylindrical collector (55).