| 摘要 |
FIELD: agriculture, in particular, feed production. SUBSTANCE: screw press has extraction cylinder and pressing screw. Triangular projections are extending along the whole length on pressing surface coil defining interrupted Archimedes' spiral from pressing screw shaft to peripheral part in direction opposed to direction of rotation of pressing screw. Projections have sharpened apex. EFFECT: increased efficiency and simplified construction. 2 cl, 3 dwg
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