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Patent Searching and Data


Title:
POWDER-CLASSIFYING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/065315
Kind Code:
A1
Abstract:
Provided is a powder-classifying apparatus in which classification precision is maintained and the number of classification points is further reduced. This powder-classifying apparatus has: a discoid centrifugation chamber configured so as to be sandwiched between two opposing members; an air supply unit that supplies air into the centrifugation chamber and generates a swirl flow; a raw material supply unit that supplies a raw-material powder into the swirl flow generated within the centrifugation chamber; a fine powder recovery unit having an opening part through which air that includes a fine powder classified within the centrifugation chamber is ejected to outside of the centrifugation chamber; a coarse powder recovery unit provided to the outer edge part of the centrifugation chamber so as to communicate with the interior of the centrifugation chamber, the coarse powder recovery unit ejecting a coarse powder classified within the centrifugation chamber to outside of the centrifugation chamber; and an annular slit provided to at least one of the members that constitute the centrifugation chamber, the slit being provided in a region between the center part of the centrifugation chamber and the outer edge part of the centrifugation chamber.

Inventors:
JIKIHARA KENJI (JP)
IGAWA YUSUKE (JP)
ONISHI TATSUYA (JP)
YOSHIKAWA TORU (JP)
KOZAWA KAZUMI (JP)
Application Number:
PCT/JP2018/034249
Publication Date:
April 04, 2019
Filing Date:
September 14, 2018
Export Citation:
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Assignee:
NISSHIN SEIFUN GROUP INC (JP)
NISSHIN ENG INC (JP)
International Classes:
B07B7/08
Domestic Patent References:
WO2015001905A12015-01-08
WO2016114234A12016-07-21
Foreign References:
JP2009034560A2009-02-19
JP2000107698A2000-04-18
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
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