FIBROUS MATERIAL SUSPENSION GRINDING DEVICE Russian patent published in 2024 - IPC D21D1/30 B02C7/14 

FIELD: grinding.

SUBSTANCE: invention relates to a refiner for grinding fibrous materials, comprising shaft (1), rotor disc (2) rigidly connected to shaft (1), and shaft bearing assembly (3), wherein rotor disc (2) is located between two stator discs (4, 5) with formation of grinding space (6) between rotor disc (2) and stator discs (4, 5), and wherein shaft (1) is installed with possibility of movement in axial direction (7). Refiner differs by the fact that the shaft bearing assembly (3) has a hydraulic connection with grinding chamber (6).

EFFECT: this allows to obtain low wear of rotor disc and stator discs, and in particular grinding plates installed on these discs, even at continuous operation mode.

13 cl, 4 dwg