DEVICE FOR GRINDING OF LOOSE MATERIALS Russian patent published in 2009 - IPC B02C17/04 

FIELD: technological processes.

SUBSTANCE: invention is related to procedure of hard materials grinding. Device for grinding of loose materials comprises multi-section drum, every section of which is assembled out of quadrangles with end creation of sections of square turned relative to square of previous section by 90°, made of large and small rectangles and two identical trapezoids, lower bases of which are equal to lateral side of large rectangle, and upper bases are equal to lateral side of small rectangle. Lateral sides of trapezoids are equal to remaining two sides of large and small rectangles with end creation of sections inclined to different sides and to axis of square sections, at that creating broken helical shape of tunnel with rectangular flow section, loading, unloading accessories and drive mounted in frame suspended by means of rubber-cord pneumatic balloons to bed plate. Sections are arranged as different in shape and size increasing from loading to unloading, are joined serially and alternately. The first section is made of two sub-sections, one of which is mounted out of two large scalene triangles joined by their bases to lateral sides of large equilateral trapezoid, and the second sub-section is mounted from small equilateral trapezoid, to lateral sides of which two small scalene triangles are joined by their small lateral sides, bases of which are equal to large lateral sides of triangles of the first sub-section, with which sub-sections are joined to each other. Upper bases of trapezoids of two sub-sections are equal to each other and are equal to small lateral sides of triangles of the first sub-section with creation of small inlet opening of section, and lower bases of trapezoids are equal to each other and are equal to large lateral sides of the second sub-section triangles with creation of large outlet opening of section, to which the second section is connected, arranged in the form of straight triangular prism created by cube section along diagonal.

EFFECT: expansion of technological resources.

10 dwg