RUBBER MEMBER OF SPIRAL CLASSIFIER LINING Russian patent published in 1999 - IPC

FIELD: separation of solid materials by sizes and density. SUBSTANCE: lining member is made in form of plate having configuration of circular sector consisting of cantilever portion of tail-piece and front (working) surface located at acute angle δ_l relative to plane of classifier spiral tape inserted metal strip with fastening holes and securing bolts. Rear (nonworking) surface of lining members is made in form of planes crossing at obtuse angle δ ≤ 180^°-δ_l whose vertex is directed towards spiral tape and coincides with its outer contour. Zone of fastening holes is provided with projections having diameter Д_pr> Д and height h_pr≥ H, where Д and H are diameter and height of fastening bolt heads. EFFECT: enhanced durability; reduced usage of materials for lining members. 2 dwg