MILL Russian patent published in 2016 - IPC B02C17/04 

FIELD: construction.

SUBSTANCE: invention relates to grinding of hard materials and can be used in construction, chemical and metallurgical industry, as well as in agriculture. Mill comprises a base, elastically mounted on the basis of the hollow housing with vibrator, loading and unloading devices. Housing is spiral from hollow tunnel with multistart screw surface. Along the perimeter housing is folded along a spiral axis 0₁-0₁ around the central rectilinear axis 0₂-0₂ of spiral housing. Housing is equipped with screw grooves in the form of pockets with three and more lateral sides. Housing consists of sections in the form of rings of identical shape and size, coiled from identical rhomb-shaped strips to trapezoids arranged on them. Trapezoids of lateral sides are located on lateral sides of rhomb-shaped strips. Top and bottom bases of trapezoids are arranged at an acute angle to axis of symmetry of the strip 0₃-0_3, wherein sections are interconnected with lateral sides of trapezium.

EFFECT: mill enhances the milling performance.

1 cl, 7 dwg