ROTARY CENTRIFUGAL UNIT WITH NEEDLE MILLING UNITS Russian patent published in 2021 - IPC B02C18/00 

FIELD: building materials production.

SUBSTANCE: invention relates to the field of production of building materials, to the chemical, pulp and paper industry, agro-industrial complex, processing of industrial and solid municipal waste, namely to equipment for grinding organic and mineral materials. The rotary-centrifugal unit contains cylindrical grinding chambers 1 and 2 connected in series with each other, inside which rotors 6, 11 and 12 are located. The chambers are equipped with means for feeding the starting material, additives and removing the finished product. Inside the first grinding chamber 1 there is a rotor 6, which is made up of a set of disc cutters 7, fixed on the shaft 5. In the second grinding chamber 2 rotors 11 and 12 rotating in opposite directions are located, composed of needle-milling working bodies. One of the rotors is made in the form of a drum 13 with windows 14 for material discharge. The second rotor is a cylindrical needle cutter 20 installed inside the drum 13. On the outer surface of the drum 13 above the windows 14, arcuate plates 16 with needle milling elements 17 are fixed.

EFFECT: rotary-centrifugal unit is characterized by increased productivity and efficiency due to the multi-stage action on the material with needle-milling working bodies.

5 cl, 4 dwg