CENTRIFUGAL DISC SHREDDER Russian patent published in 2021 - IPC B02C7/00 B02C13/20 

FIELD: mechanical engineering.

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 shredder contains a cylindrical body 1 with a loading 2 and unloading 3 nozzles, the upper 4 and lower 5 disks rotating oppositely. The lower disk 5 has an upper conical surface with an angle of inclination of the generatrix to the horizon that exceeds the angle of the natural slope of the material. The gap between the upper conical surface of the lower disk 5 and the lower conical surface of the upper disk 4 decreases uniformly from the center of the disks 4, 5 to their periphery. In this case, an angle is formed between the lower conical surface of the upper disk 4 and the upper conical surface of the lower disk 5. On these surfaces, radial edges 7 and 8 are fixed, the height of which decreases uniformly from the center of disks 4 and 5 to their periphery. A concentric trough 10 with a cross-section in the form of a semicircle is rigidly fixed to the end of the upper disk 4 by the upper edge 9. To the end of the lower disk 5, the impact elements 11 are rigidly and evenly attached, under which the horizontal ring 12 is rigidly fixed. In the inner cavity of the concentric chute 10, the bump elements 13 are rigidly fixed, the internal profile of which corresponds to the external profile of the impact elements 11 in compliance with the technological gap. In the lower sector 14 of the concentric trough 10, through radial prismatic holes 15 are made along its perimeter, the width of the smaller upper base of which is equal to (0.1...0.5) ∙ Dmax, where Dmax is the maximum size of the crushed material. The diameter of the horizontal ring 12 located under the concentric chute 10, with a gap exceeding Dmax, exceeds the diameter of the upper disc 4.

EFFECT: chopper provides an increase in the efficiency of the working process.

1 cl, 4 dwg