| US 7,364,101 B2 | ||
| Pulverizing apparatus and method for pulverizing | ||
| Tetsuya Tanaka, Suntou-gun (Japan); Nobuyasu Makino, Numadu (Japan); and Hideyuki Santo, Numadu (Japan) | ||
| Assigned to Ricoh Company, Ltd., Tokyo (Japan) | ||
| Filed on Jul. 28, 2005, as Appl. No. 11/190,934. | ||
| Claims priority of application No. 2004-219990 (JP), filed on Jul. 28, 2004; and application No. 2005-205915 (JP), filed on Jul. 14, 2005. | ||
| Prior Publication US 2006/0024607 A1, Feb. 02, 2006 | ||
| Int. Cl. B02C 19/06 (2006.01); B02C 23/08 (2006.01) | ||
| U.S. Cl. 241—79.1 [241/5; 241/39] | 26 Claims |
| 1. A pulverizing apparatus comprising:
plural air nozzles;
a chamber configured to pulverize particles by compressed air jetted from the plural air nozzles;
a rotor set in an upper part of the crushing chamber, configured to classify particles that flow into the rotor from the chamber
into fine particles and raw particles by centrifugal force,
wherein the rotor comprises plural blades set to each have a width of 1/50-2/25 of a diameter of the rotor,
wherein a length of each of the plural blades of the rotor is 1/25-3/50 of the diameter of the rotor,
wherein each of the plural blades forms a gap with a neighboring of the plural blades set to 1/25-3/25 of the diameter of
the rotor, and
wherein each of the plural blades has an angle of 0-30 degrees against a rotating direction of the rotor.
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