RUBBER MEMBER OF SPIRAL CLASSIFIERS FACING Russian patent published in 1996 - IPC

FIELD: mining, building and other branches of industry, separation of solid material by size and density in water medium. SUBSTANCE: rubber member of spiral classifiers facing is made as plate in the form of ring-type sector with located on its operational surface radial ribs with equal sided trapezium cross-section and also with blind grooves in between ribs space, in center of which there are through holes. Space H between supporting surface plane of blind grooves and ribs peaks plane is defined by H≥Δ+h_h+[l+D_h/2]•tgα with Δ is washer thickness, h_h - bolts heeds height, D_h - diameter of bolts heeds, l - space between axis of through holes and peak pf nearest rib, α - angle equal to elevation angle of classifier spiral. EFFECT: improved solid materials separation by size and density in water medium. 3 dwg