AUGER-TYPE EXTRACTOR Russian patent published in 1996 - IPC

FIELD: separation of materials, in particular, extraction of valuable components from raw plant materials. SUBSTANCE: extractor has housing with branch pipes for charging raw material, discharging oil cake, introducing extractant and discharging miscella, and at least one auger mounted within housing and provided with at least two helical grooves defining channels and steps positioned at the place of joint. Depth and (or) width of at least one helical channel are gradually decreasing and of at least one helical channel - gradually increasing in one direction. EFFECT: increased efficiency and simplified construction. 2 cl, 2 dwg