TUBULAR SCREW MILL Russian patent published in 2015 - IPC B02C17/04 

FIELD: machine building.

SUBSTANCE: mill comprises feed (2), discharge (3) trunnions, a drive and a drum (1). The drum consists of sections. The sections are assembled of two identical subsections. The subsections are composed of even number of at least 4 identical isosceles and 4 identical equilateral triangles. The isosceles triangles are alternately connected with the equilateral triangles along the subsection perimeter to form a small and a large end holes in the form of polygons. Two subsections are connected to each other by the sides of end large holes to form a section. The sections are attached to each other along the drum length by their sides of the small end holes. The connected sections form a multithread screw drum with mutually oriented broken screw lines.

EFFECT: invention expands operating performances due to higher intensity, energy intensity and reorientation of the crushed material particles and crushing bodies.

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