GRINDER Russian patent published in 2013 - IPC B02C13/00 

FIELD: process engineering.

SUBSTANCE: invention relates to grinders of mineral and organic materials and may be used in production of construction materials. Proposed grinder comprises horizontal cylindrical casing 1 with loading and unloading pipes 2, 3, respectively, shaft 4 arranged coaxially in casing 1 and coupled with rotary drive, and grinding assembly. Note here that loading and unloading screw blades 5, 6 are fitted on said shaft in the area of appropriate pipes while grinding assy is mounted there between. Said grinding assy is composed of rods 8 arranged around aforesaid shaft and parallel with it. Ends of said rods are locked in structural elements 7. Loading and unloading screw blades 5, 6 shaped to extra coils are rigidly fixed at the shaft. Extra coil of every blade can be formed by a set of leaf elements shifted relative to each other in helical line. Helical springs 9 are fitted free on rods 8 to get in contact with inner surface of case 1.

EFFECT: ruled out stagnant zones, uniform displacement of material nearby case inner surface.

7 cl, 8 dwg