Nisshin Flour Milling Co., Ltd.

Nisshin Engineering Co., Ltd.

Shigemi Fujisawa

Yukiyoshi Yamada

Masayuki Yasuguchi

Osamu Kano

A jet air flow crusher has a guide face formed by the inside surface of an outer wall in which a flat and almost ellipsoidal internal space is defined to guide an ellipsoidal gas phase flow powder grains; a crushing zone in which flowing powder grains are crushed provided on one side of the internal space in the direction of the ellipsoidal major axis; a classifying zone at which flowing powder grains are discharged provided on the other side of the internal space in the direction of the ellipsoidal major axis; a gas phase flow passage defined in the crushing zone by the inside surface of the outer wall and a partition wall; nozzles installed in the outer wall and the partition wall at several locations in the direction of the powder grain flow in the crushing zone to jet out air in a direction substantially corresponding to the powder grain flow for carrying and crushing the powder grains, and flow resisting means for limiting the gas phase flow carrying the powder grains, arranged at least at one location between the nozzles spaced from one another in the direction of the powder grain flow.

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Kawagoe, Japan

Shigemi Fujisawa