END WALL OF BALL MILL Russian patent published in 2002 - IPC

FIELD: equipment for disintegrating materials. SUBSTANCE: end wall of ball mill includes annular multiprofile cylindrical protrusion rigidly joined with cup-shaped bottom. The last has stepped profile formed by means of two inner and six outer coaxially arranged and mutually divided cylindrical surfaces. Said cup-shaped bottom is joined by radius with outer cylindrical portion of annular combination-type protrusion. Cross section of cup-shaped disc is inclined relative to rotation axis and it is narrowed towards periphery. Peripheral zone is restricted at outer side by means of cylindrical and conical contours. Inner end surface of peripheral portion of cup-shaped protrusion includes different-area mutually opposite portions of cone surfaces separated one from another by means of straight bridge. At outer side of bottom there are brackets with oval openings. EFFECT: improved design, enhanced manufacturing possibilities of mill. 5 dwg