CENTRIFUGAL DISK GRINDER Russian patent published in 2019 - 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 particular, in the production of building materials. Shredder contains cylindrical body 1 with loading 2 and unloading 3 branch pipes, oppositely rotating upper 4 and lower 5 disks. Each of disks 4, 5 has a conical ribbed working surface with an angle β inclination of the generatrix to the horizon exceeding the angle α of material depositional gradient. Gap between the projections of the radial ribs 6 of the working surfaces of upper 4 and lower 5 disks is equal to (2…5)D_max, where D_max is the maximum particle size of the source material. Working surface of each of disks 74, 5 has vertical concentric ribbed ledges 7, which are located on top 4 disk in circles with diameters D_i, and on lower 5 disk - on ellipses with a larger axis equal to D_i-2S_min, and with a smaller axis equal to D_i-2S_max. Gaps between the protrusions of vertical edges 8 of vertical concentric ribbed ledges 7 of two disks decrease from their center to the periphery with the values S_max=(1…2)D_max÷(0.2…0.5)D_max and S_min=(0.5…1.0)D_max÷(0.1…0.2)D_max.

EFFECT: shredder provides increased grinding process efficiency and productivity for the finished product.

1 cl, 3 dwg