CENTRIFUGAL DISC GRINDER Russian patent published in 2024 - IPC B02C7/00 B02C13/00 

FIELD: crushing or grinding of various materials.

SUBSTANCE: invention relates to devices for grinding various materials and can be used in production of construction materials, as well as in other industries. Centrifugal disc grinder comprises cylindrical housing 1 with loading 2 and unloading 3 branch pipes, oppositely rotating upper 4 and lower 5 discs. Radial ribs 7 and 8 are rigidly fixed on the lower surface of the upper conical disc 4 and on the upper surface of the lower horizontal disc 5. Vertical gap between the lower surface of the upper conical disc 4 and the upper surface of the lower horizontal disc 5 uniformly decreases from their centre to periphery from (1.5...2)D_max to (0.5...1.0)D_max, where D_max is the maximum particle size of the crushed material. Vertical concentric rings 11 are rigidly fixed to lower surface of upper conical disc 4 between radial ribs 7 with radial pitch exceeding D_max. Height of radial ribs 8 of lower horizontal disc 5 decreases from centre to periphery from (0.5...1.0)D_max to (0.1...0.2)D_max with provision of technological gap between radial ribs 7 of upper conical disc 4 and radial ribs 8 of lower horizontal disc 5. Vertical rectangular hammers 12 are rigidly attached to the inner surfaces of the vertical concentric rings 11 along the circumference with a pitch exceeding D_max, lower ends 13 of which are located in one plane with lower end 14 of adjacent vertical concentric ring 11, vertical rectangular hammers 12 together with vertical concentric rings 11 with a process gap enter vertical cutouts 15 in radial ribs 8 of the lower horizontal disc 5, which dimensions in height and width decrease from the centre of disks 4 and 5 to the periphery in proportion to the decrease in the height of radial ribs 8 of the lower horizontal disk 5.

EFFECT: invention provides higher efficiency of the working process.

1 cl, 3 dwg