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

FIELD: process engineering.

SUBSTANCE: this mill comprises rattler, loading and unloading spindles and drive. Said rattler is composed by sections to make three and more LH and RH helical zigzag lines at inner perimeter and inner three and more equal-pitch helical grooves. Sections consist of two subsections composed by three and more isosceles trapeziums and isosceles triangles with interconnected lateral sides and bases in subsection are opposed. Said sections are interconnected by larger bases of trapeziums. Said subsections are connected so that the bases of isosceles triangles of one section are connected to top base of isosceles trapeziums in second subsection. Note that bases of isosceles triangles of second subsection are connected to top base of first subsection isosceles trapeziums.

EFFECT: expanded performances and higher efficiency.

5 dwg