MULTIPLE-STAGE GRINDER Russian patent published in 2001 - IPC

FIELD: grinding equipment. SUBSTANCE: grinder has hopper, housing with charging and discharge openings, rotor with shaft and accelerating disks put onto shaft, decks arranged concentrically and in opposed relation to accelerating disks, separators, and conical tilt boards. Hammers are pivotally secured to accelerating disks. Upper and lower separators are mounted so that they adjoin deck end surfaces. Conical tilt boards are attached with their large ends to deck of previous step and with their small end to upper separator of subsequent step. EFFECT: simplified construction and reduced power consumption. 3 cl, 1 dwg