CENTRIFUGAL DISC GRINDER Russian patent published in 2022 - IPC B02C7/00 B02C13/20 

FIELD: materials grinding.

SUBSTANCE: invention relates to devices for grinding various materials and can be used in the production of building materials, as well as in other industries. The centrifugal disc grinder contains a cylindrical body 1 with loading 2 and unloading 3 branch pipes, counter-rotating upper 4 and lower 5 discs. The upper 4 and lower 5 discs have a conical working surface with an angle β of inclination of the generatrix to the horizon, exceeding the angle α of the natural repose of the material. On the periphery of the upper surface of the lower disc 5, vertical impact rings 6 are rigidly attached, in front of which, with a technological radial clearance on the lower surface of the upper disc 4, cams 7 with an arcuate working surface with a width exceeding D_max, where D_max is the maximum size, are rigidly attached symmetrically in plan and around the circumference. particles of the starting material. The distance between adjacent cams 7 along the circumference exceeds 2D_max. In the lower part of the vertical baffle rings 6 to the surface of the lower disc 5, through prismatic slots 8 are made with the smallest height on the inner surface of the baffle ring 6. The vertical gap between the working surfaces of the upper and lower disks decreases from the center to the periphery from (1.5...2 ,0)D_max to (0.5…1.0)D_max. From the center of the discs 4 and 5 in front of the inner row of cams 7 to the conical working surfaces of the upper 4 and lower 5 discs, radial ribs 9 and 10 of rectangular cross section are rigidly attached, the height of which, as well as the height of the vertical fender rings 6 with through prismatic slots 8 and the minimum vertical the gap between the working surface of the cams 7 and the upper surface of the lower disc 5 decreases in proportion to the decrease in the vertical gap between the working surfaces of the disks 4 and 5.

EFFECT: invention provides an increase in the efficiency of the grinding process and productivity of the finished product.

1 cl, 5 dwg