MIXING MILL Russian patent published in 2024 - IPC B02C17/16 

FIELD: grinding materials in liquid media.

SUBSTANCE: invention can be used in paint, pharmaceutical, chemical and other industries. The mixing mill comprises a drive, a housing 1 with covers 2 and 4, loading 3 and unloading 6 openings, an output separator 14 and a rotatable shaft 7 installed in the housing, with fixedly mounted, paired helical blades 8 and 9, 10 and 11, 12 and 13. In each of the pairs located in opposite directions with the beginnings 15, 16, 17, 18, 19, 20 of the laps 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38 of propeller blades, which are rotated relative to each other, in a plane perpendicular to the longitudinal axis of the shaft 7, and having in each pair of blades the direction of entry of the propeller blades 9, 11, 13, close to the separator, opposite from the side of the separator 14 to the direction of shaft rotation. The screw blades 8, 9, 10, 11, 12, 13 are made in the form of multi-start blades in each pair with equal screw pitch t and length L=t/2n, where n is the number of propeller laps of multi-start blades. The propeller pitch t of each subsequent pair and the distance l between the multi-lap blades in these pairs decrease towards the separator 14. The number of propeller laps in each pair of multi-start blades increases towards the separator. In each pair of multi-laps blades, the beginnings of their propeller laps in a plane perpendicular to the longitudinal axis of the shaft are rotated at an angle relative to each other α = 0°/n…180°/n.

EFFECT: increased productivity and reduced specific energy consumption.

1 cl, 4 dwg