FIELD: machine engineering.
SUBSTANCE: lignocellulosic material grinding system comprises a bi-directional segment of the rotor plate with the grinding region of the first rotor plate with at least one grinding zone in the first radial range of the distances between the inner and outer edges of the segment of the rotor plate and the bidirectional segment of the stator plate with the grinding region of the segment of the first stator plate with at least one grinding zone in the second radial range of distances between the inner and outer edges of the segments of the stator plate. The grinding zone of the segment of the first rotor and stator plates contains each series of alternating blades and grooves. The width of the grooves of the first rotor plate is at least 50% greater than the width of the grooves of the first stator plate. The segment of the rotor plate comprises a grinding zone of the second rotor plate in the third radial range of distances between the inner and outer edges of the segment of the rotor plate. The third radial range of distances is located closer to the outer edge of the segment of the rotor plate than the first radial range of distances. The segment of the stator plate also includes the grinding zone of the segment of the second stator plate in the fourth radial distance range between the inner and outer edges of the segment of the stator plate. The third and fourth radial ranges of distances overlap and the grinding region of the segment of the second rotor plate has at least one grinding zone, comprising a series of alternating blades and grooves where the grooves have a groove width of the second rotor plate and the grinding region of the segment of the second stator plate has, at least one grinding zone comprising a series of alternating blades and grooves, where the grooves have a groove width of the second stator plate. The width of the grooves of the second rotor plate is substantially equal to the width of the grooves of the second stator plate. The bi-directional assembly of the refiner plate for the refiner disk contains a rotor and stator plate, each of which has a patterned and reverse side. The figured sides of the rotor and stator plates are opposite to each other. Each of the rotor and stator plates comprises, in accordance with the above described segments, rotor and stator plates with grinding regions.
EFFECT: grinding system and bi-directional assembly provide the possibility of changing the direction of rotation of the refiner plates while maintaining an acceptable wear time.
26 cl, 8 dwg
