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

FIELD: process engineering.

SUBSTANCE: proposed concrete mixer comprises rotary drive, drum and working member composed by isolated rolling rods. Said working member is composed of multistart helical surface with helical grooves inside and outside said rolling rods at acute angle to their rotational axes in the form of curved pockets with centres of curvature of pocket curved helical surface. Said pockets are arranged alternatively outside and inside roll rod cross-section. Said pockets are composed of at least one coiled strip with turns connected along lengthwise edges. Said strip is bent in wavy manner at acute angle to its lengthwise edges along creases to make helical surface with helical grooves inside and outside said rolling rods at acute angle to their rotational axes in the form of curved pockets directed to their rotational axes at acute angle over inner and outer surfaces. Said pockets can vary in both shape and size along perimeter of rods-rolls. Distance between flexure lines equals the sum of perimeters of pockets of inner and outer surfaces. Note here that hollow helical surfaces of roll-rods are filled with metal or concrete.

EFFECT: expanded performances.

7 dwg