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

FIELD: material grinding.

SUBSTANCE: devices for grinding various materials, used in the production of construction materials, as well as in other industries. The centrifugal disc grinder comprises a cylindrical body 1 with loading 2 and unloading 3 branch pipes, oppositely rotating upper 4 and lower 5 discs. On the lower surface of the upper conical disk 4, vertical holders 7 are rigidly fixed along concentric circles, to the lower ends of which radial rectangular plates 8 are rigidly fixed, the lower one with radial ribs 9, the surface 10 of which is inclined towards the periphery. On the upper surface of the lower horizontal disk 5 with radial ribs 11 with the same radial pitch exceeding Dmax, where Dmax is the maximum particle size of the crushed material, vertical concentric rings 12 with through prismatic grooves 13, made from the upper surface of the lower horizontal disk 5, expanding towards the periphery and evenly alternating along the circumference. The vertical gap between the lower surface of the upper conical disk 4 and the upper surface of the lower horizontal disk 5 uniformly decreases from the centre of the disks 4 and 5 to their periphery from (1.5...2)Dmax to (0.5...1.0) Dmax, in proportion to which the height of the vertical concentric rings 12 decreases in the direction to the periphery, each of which is sequentially located behind each row of radial rectangular plates 8 towards the periphery with a radial technological gap. Inclination angle α to the horizon of the lower surface of radial rectangular plates 8 is less than 2ϕ, where ϕ is the friction angle. The lower point 14 of each radial rectangular plate 8 is at the same height as the upper edge 15 of each through prismatic groove 13, which uniformly decreases from the centre to the periphery in proportion to the decrease in the vertical gap between the working surfaces of the disks.

EFFECT: grinder provides an increase in the efficiency of the workflow.

1 cl, 4 dwg