APPARATUS FOR PROGRESSIVE FEEDING OF MATERIAL IN GRINDER Russian patent published in 2002 - IPC

FIELD: mechanical engineering. SUBSTANCE: grinder has drum with horizontal axis equipped with annular grinding track. Drum is driven for rotational movement at speed exceeding critical speed. Apparatus has knife arranged inside drum in descending part for separating material layer from annular track and baffling plate arranged beneath knife and adapted for intercepting material separated by knife and baffling it toward discharge end of grinder. Knife is positioned so that its working surface defines angle α of from +15 deg to -50 deg relative to radial plane extending from knife edge. EFFECT: increased efficiency in selective feeding of material to grinder working tools and simplified construction. 3 cl, 2 dwg