TUBULAR MILL Russian patent published in 2014 - IPC B02C17/04 

FIELD: process engineering.

SUBSTANCE: invention relates to sold materials crushing means. Proposed mill comprises drum, drive, loader and unloader. Concaved drum is composed of concaved curvilinear strips with lateral edges. Strip concaved curvilinear shapes are described by different-degree and different-curvature curves and are coiled at concave mandrel in lengthwise-crosswise direction to make curvilinear faces. Adjacent curvilinear faces are located at obtuse angle to each other on strip outer and inner sides to intersect so that smooth major-direction helical lines are produced on outer surface and smooth helical grooves over the drum inner surface as well as smooth helical lines on opposite-direction outer surface and smooth opposite-direction helical grooves inside concaved drum. Concaved spring with turn pitch variation device is arranged over the entire length of concaved drum. Said drum with spring, loader, unloader and drive are mounted at the frame secured by means of rubber-cord air cylinders to the bed.

EFFECT: enhanced performances.

7 dwg