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

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, oppositely rotating upper 4 and lower 5 discs. The upper 4 and lower 5 discs have a conical working surface with an inclination angle β of the generatrix to the horizon exceeding the angle α of the natural repose of the material, in which concentric protrusions 6 opposite each other on the upper disc 4 and concentric grooves 7 are made sequentially one after another towards the periphery on the lower disc 5 of a semicircular cross section, having a ribbed surface. The vertical gap between the opposite lower points 8 and 9 of the concentric protrusions 6 and the concentric grooves 7 of the upper 4 and lower 5 discs decreases from the center to the periphery and is equal to (1…2)D_max in the central part of the discs 4 and 5 and (0.1…0, 5)D_max on their periphery, where Dmax is the maximum particle size of the starting material. Along the perimeter of the circumference of the outer side walls 10 concentric grooves 7 trapezoidal cuts 11 with a smaller base 12 inside, the lower surface 13 of which is in the same plane of the lower points 9 concentric grooves 7 are evenly made. base 12 decreases from (1…2)D_max in the central part of discs 4 and 5 to (0.1…0.5)D_max on their periphery.

EFFECT: invention is aimed at improving the efficiency of the grinding process and productivity of the finished product.

1 cl, 5 dwg