CENTRIFUGAL MULTISTAGE MILL Russian patent published in 1997 - IPC

FIELD: grinding of materials, preferably grain crops. SUBSTANCE: centrifugal mill has grain duct 1, body 2, supporting plates 3, 4. Successively installed in receiving-distributing chamber are several grinding chambers, each of them being provided with centrifugal accelerating disks 5, 6, 7 which are mounted on vertical shaft 8 and their dimensions are increasing at each stage as approaching discharge holes. Also provided are baffle decks 9, 10, 11, deflecting cylindrical grates 12, 13 of different diameters, cone-shaped screens 14, 15 with their number equal to number of installed cylindrical grates and decks, return boards 16, 17. Number of additional screens at stages is reducing as approaching discharge holes. Active separation area of additional screens at each stage can be increasing as approaching main screen located under deck. Working openings of cylindrical members can be located with displacement of their centers in horizontal plane relative to each other. EFFECT: high efficiency. 1 cl, 4 dwg