Title:
JET MILL APPARATUS
Document Type and Number:
Japanese Patent JP2014200721
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a jet mill apparatus capable of reducing a variation in a particulate diameter by crushing treatment by stably generating a high speed swirling flow in a cavity chamber, though being an extremely simple structure.SOLUTION: The jet mill apparatus comprises a plurality of jet nozzles 13 embedded in a ring shape in an inner wall side surface of the cavity chamber 11, and crushes a crushing object injected into the cavity chamber in a fine particle by using the high speed swirling flow generated by high pressure gas jetted from the nozzles. A concentric coaxial cylinder of turning in the vertical upper direction is provided in a substantially central part of a ceiling surface of the cavity chamber, and the crushing object is injected into the cavity chamber by using negative pressure generated in an inner cylinder part 21 of the coaxial cylinder 21, and the crushed fine particle is also extracted from the inside of the cavity chamber by using positive pressure generated in an outer cylinder part 22 of the coaxial cylinder.
Inventors:
MARUO SHIGEAKI
OKAWA ISAO
OKAWA ISAO
Application Number:
JP2013077283A
Publication Date:
October 27, 2014
Filing Date:
April 02, 2013
Export Citation:
Assignee:
MARUO SHIGEAKI
OKAWA ISAO
OKAWA ISAO
International Classes:
B02C19/06
Domestic Patent References:
| JP2010509047A | 2010-03-25 | |||
| JPS52137758A | 1977-11-17 | |||
| JPS5244450A | 1977-04-07 | |||
| JP2008246298A | 2008-10-16 |
Foreign References:
| US4553704A | 1985-11-19 |
Attorney, Agent or Firm:
Tsuneyuki Kitajima