CONCRETE MIXER Russian patent published in 2014 - IPC B28C5/20 

FIELD: process engineering.

SUBSTANCE: invention relates to production of mortars. Concrete mixer comprises drive and drum. Said drum is made to form three and more zigzag right and left helical lines at its inner perimeter directed opposite each other. Besides there are three and more helical grooves at equal pitch composed of sections of two subsections made up of interconnected alternating isosceles trapeziums and triangles. The bases of the latter in a subsection are opposed. Said sections are interconnected by larger bases of trapeziums. Said subsections are connected so that the bases of isosceles triangles of one section are connected to top base of isosceles trapeziums in second subsection. Note that bases of isosceles triangles of second subsection are connected to top base of first subsection isosceles trapeziums.

EFFECT: expanded performances.

5 dwg