| 摘要 |
PURPOSE: A jet mill is provided to finely crush the crushed material to the desired grain size, to lower the inhomogeneity of the grain size, to heighten the classification precision, to allow the easy disassembling and assembling of an upper and lower face of crushing chamber, and to simplify the washing before or after usage. CONSTITUTION: The jet mill includes: a jet mill body(2), forming a disk-shaped cavity; many air nozzles(6), arranged on a ring-shaped outer wall(4) of the jet mill body(2) in an inclined manner to the center of the disk-shaped cavity and generating a high-speed air flow inside the cavity; a ring-shaped crushing zone(26), having an outlet and crushing the material to be crushed with aid of the high-speed air flow which is supplied from the many air nozzles(6); a ring-shaped classifying zone(28), arranged inside the crushing zone(26), connected with the space of the outlet, and classifying the material to be crushed with aid of air flow; and a ring-shaped first narrow channel(26), arranged between the crushing zone(26) and the classifying zone(28).
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