DREDGE BARREL Russian patent published in 2002 - IPC

FIELD: mining industry and other branches of industry using product screening operations. SUBSTANCE: dredge barrel has drum-type separation screen, housing positioned under barrel and equipped with conical openings. Housing is hung on longitudinal shaft for rotation around it. Hunger pin is arranged above drum-type screen. Apparatus is further equipped with inlet branch pipe made in the form of inverted truncated cone with curved helical guides and tangentially extending from side surface of drum-type screen. Curved helical grooves are formed in internal surface of discharge window. Housing is hung eccentrically to drum-type screen shaft. Apparatus may be used for concentration of minerals. EFFECT: increased efficiency and improved quality of distribution of screening product. 3 dwg