SPIRAL MILL Russian patent published in 2017 - IPC B02C17/00 

FIELD: technological processes.

SUBSTANCE: spiral mill contains a hollow body mounted on the platform with a vibrator mounted horizontally beneath the platform. The body is made spiral out of the hollow tunnel with a multi-thread helical surface along the perimeter of a coiled axis 0₁-0₁ around the central rectilinear axis 0₂-0₂ spiral body, provided with screw grooves inside at an angle to its spiral axis in the form of curved pockets with centers of curvature located inside the cross section of the hollow tunnel. Herewith the body is assembled from the sections in the form of identical in shape and size rings, folded from the same diamond-shaped bands, on which trapeziums are located, the lateral sides of which are located on the sides of the diamond-shaped band, and the upper and lower trapezium bases are located at an acute angle to the axis of the diamond-shaped band symmetry 0₃-0₃, and are fold lines spaced from each other at distances equal to the length of the curved pockets along the inner surface of the hollow tunnel of the spiral body. The sections are connected to each other by the sides of the trapeziums.

EFFECT: expanding the technological possibilities of the mill, increasing its productivity.

7 dwg