GRINDING SET Russian patent published in 2023 - IPC B02C7/12 D21D1/30 

FIELD: pulp and paper industry.

SUBSTANCE: grinding sets for disc mills and can find application in grinding and preparation shops of pulp and paper industry enterprises. The grinding set contains rotor and stator disks, the working surfaces of which, facing one another, are equipped with circular knife projections, the cutting edges of which are made with eccentricity relative to the centre of the disk. In this case, the ratio of the tangential components of the circumferential forces at the exit edge from the grinding cavity and at the entrance edge into the grinding cavity is determined by the formula where r is the radius of the input circular edge of the disk, R is the radius of the output circular edge of the disk, is the tangential component of the circumferential force at the trailing edge, is the tangential component of the circumferential force at the leading edge, β^A is the angle formed by the tangent to the circular cutting edge, at the point of its intersection A with the input circular edge of the disk, and its radius r, β^B is the angle formed by the tangent to the circular cutting edge, at the point of its intersection B with the output circular edge of the disk, and its radius R. The above ratio of the tangent components of the circumferential forces at the output and input edges ensures the passage of the mass through the grinding cavity with simultaneous fibrillation.

EFFECT: improved efficiency.

1 cl, 1 dwg