APPARATUS FOR GRINDING AND MIXING OF PLASTIC MATERIALS, PREFERABLY CLAY Russian patent published in 2007 - IPC B28C1/14 

FIELD: production of construction materials, in particular, manufacture of clay brick.

SUBSTANCE: apparatus has casing with feeding hopper, screw and transverse grids and rotating knives with petal-shaped cutting members, said grids and knives being sequentially positioned in alternation within casing. Knives and transverse grids closely adhere to one another. Cutting members of knives have surfaces inclined with respect to plane of transverse grid following knife. End edges of cutting members adjoin surfaces of transverse grids between which surfaces knife is located. End edges of said surfaces are adjoining surfaces of end edge of knives and are provided with bevel oriented to side opposite to direction of rotation of knives.

EFFECT: increased efficiency in grinding of clay.

14 cl, 7 dwg