FIELD: disintegrators and crushing devices.
SUBSTANCE: disclosure relates to a segment of a grinding disc, mechanical refiners and methods for making a segment of a grinding disc having one or more water channels arranged in a variable base profile along a radial extent of a base of a segment of a grinding disc and located between the grinding disc segment input and the primary milling section, in which the variable base profile comprises a wavy curve configured to supplement the second wavy curve on the opposite refiner refining disc, and wherein dimensions of one or more water channels are sufficiently narrow to prevent ingress of wood chips into water channels and sufficiently wide to provide a bypass path for excess water.
EFFECT: described is a discharge groove for water, to prevent cavitation of the opposite refiner grinding disc.
29 cl, 16 dwg
