Title:
IMPACT TYPE PNEUMATIC PULVERIZER
Document Type and Number:
Japanese Patent JP3114040
Kind Code:
B2
Abstract:
PURPOSE: To effectively pulverize a powder raw material by making the relationship between the nozzle length of a nozzle for feeding high pressure gas, the length of an accelerating pipe and the utmost adjacent distance between the projecting central part of an impact member and an outer peripheral impact surface and the widening angle of a high pressure gas feeding nozzle satisfy prescribed conditions.
CONSTITUTION: An accelerating pipe 1 has a feeding port 5 for a material to be crushed at the rear end part. An impact surface has a projecting central part 16 and an outer peripheral impact surface 17 has the form of a pyramid. A pulverizing chamber 13 has a side wall 15 for further pulverizing the material to be pulverized which has been pulverized by an impact member 11. And the nozzle length L1 (≥0) of a high pressure gas feeding nozzle 3 having a high pressure gas feeding nozzle throat diameter (a) (>0), the length L2 (>0) of the accelerating pipe 1, and the utmost adjacent distance L3 (>0) between the apex of the projecting central part 16 and the outer peripheral impact surface 17 in the impact member 11 satisfy the formula 1. Further, the widening angle θ1 of the high pressure gas feeding nozzle satisfies the conditions of the formula II in the range of 0°≤θ1≤20°, provided that in the formula II, (b) and (c) represent the diameter of the throat of the accelerating pipe 1 and the diameter of the bottom surface of the projecting part having the form of a pyramid of the impact member 11 respectively.
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Inventors:
Satoshi Mitsumura
Hitoshi Kanda
Yoko Goka
Masakichi Kato
Hitoshi Kanda
Yoko Goka
Masakichi Kato
Application Number:
JP23226993A
Publication Date:
December 04, 2000
Filing Date:
August 26, 1993
Export Citation:
Assignee:
Canon Inc
International Classes:
B02C19/06; G03G9/087; (IPC1-7): B02C19/06
Domestic Patent References:
| JP4326952A | ||||
| JP360749A | ||||
| JP2298365A |
Attorney, Agent or Firm:
Yoshio Toyota (1 outside)