TUBE MILL Russian patent published in 2009 - IPC B02C17/04 

FIELD: engines and pumps.

SUBSTANCE: proposed tube mill incorporates loading and unloading trunnions, drive and drum made from, at least, one strip bent along the straight lines, and arranged at an angle to the said strip edges to form identical parallelograms arranged alternating on the strip into opposite directions. The said strip represents helical coils interconnected along the lengthwise edges to form, on its outer surface, unidirectional zigzag helical lines, and, on its inner surface, the helical zigzag triangular-shape pockets. The pockets arranged along the drum edges represent polygonal- and curvilinear-shape geometrical figures made from, at least, one strip bent into one side or opposite sides along the straight lines located at identical angles to the strip edges to form various-size parallelograms.

EFFECT: expanded performances.

4 cl, 11 dwg