A refining member for a pulp refiner comprising a refining body with a refining surface comprising refiner bars separated by refiner grooves and teeth. Each of the refiner bars extend from a radially inward position on the refining surface to a first radially outward position on the refining surface, and the teeth extend to a second radially outward position on the refining surface. The second radially outward position is nearer to an outermost part of the refining body than the first radially outward position. The refiner bars are adapted to refine wood fibers, and the teeth are adapted to break up fiber bundles.

There is disclosed a refiner segment (10) for a refiner (1) of lignocellulosic material. The refiner segment (10) is part of a refiner disc (100) that comprises a center area (11). The refiner segment (10) comprises a number H, N2, of bar zones (Z.sub.i,i=1, 2, . . . N) that are arranged at different radial positions with regard to a radial direction R extending from the center area (11) of the refiner disc (100)_towards the periphery of the refiner segment (10). Each of the bar zones (Z.sub.i) are defined by a corresponding set of refining bars (Z.sub.i.sup.RBi, i=1, 2, . . . M) that are distributed angularly and encircles the center area (11). The refining bars (Z.sub.i.sup.RBi) belonging to different but neighboring bar zones (Z.sub.i, Z.sub.i+1) are angularly offset and refining bars (Z.sub.i.sup.RBi) belonging to different but neighboring bar zones are arranged in such a way that a tangential direction of a particular refining bar (Z.sub.k.sup.RBk) belonging to a bar zone (Z.sub.i,) points in a direction towards the mid-point between two refining bars (Z.sub.k+1.sup.RBk+1) belonging to a neighboring bar zone (Z.sub.i, Z.sub.i+1) and wherein the length of refining bars belonging to different bar zones decreases from a largest length for refining bars (Z.sub.i.sup.RBi) belonging to the innermost bar zone (Z.sub.1), with regard to the center (11) of said refining disc (100), to the smallest length for refining bars (Z.sub.N.sup.RBN) belonging to the outermost bar zone (Z.sub.N) adjacent the periphery of said refiner segment (10). There is also disclosed a rotor disc comprising such a refining segment, a stator disc adapted to cooperate with such a rotor disc as well as a refiner comprising at least one of such a rotor disc and stator disc.

An apparatus for dispersing or refining organic material includes a rotor shaft extending along a rotation axis, a rotor to be driven to rotate by the rotation axis, and a housing arranged around the rotor shaft and the rotor, the housing having an inlet for receiving the organic material and an outer wall. The housing has a stator disc, and the rotor has a rotor disc, each disc having teeth on a surface that is turned toward the other disc. After organic material has been dispersed by the teeth, the organic material is fed into a dilution zone where the organic material is mixed with dilution liquid introduced through a number of dilution inlets before the mix is fed out of the apparatus via an outlet arranged in the outer wall. The dilution inlets are angled in relation to the radial of the rotation axis, in a plane perpendicular to the rotation axis. By angling the dilution inlets in such a way, a better mix is achieved between dilution liquid and dispersed or refined organic material, which results in increased energy efficiency of the apparatus.

A hub and a member, the member having a central opening. The hub is received in the member central opening. The hub has a center, and a hub axis through the center. The hub also has a splined exterior with a plurality of splines, each spline having a spline surface, and the member central opening has internal splines that engage with the hub splined exterior. At least one of the hub splines has a wear indicator, the wear indicator comprising a surface mark that extends along a portion of the spline surface in the same direction as the hub axis.

The present invention concerns a granular material conditioner for optimising grain sizes of granular materials comprising two discs which are rotatable relative to each other and which are arranged in substantially mutually parallel relationship, a granular material inlet through which granular material can be passed into the conditioner into an annular gap between the two discs, and a catch container for receiving the granular material which issues from the gap between the two discs by virtue of centrifugal force. According to the invention it is proposed that the catch container has an elastic curtain, wherein the curtain is spaced at least portion-wise from the catch container wall and limits the trajectory of the granular material issuing from the gap.

A refiner segment configured to be attached to a refiner disc in a refiner of lignocellulosic material includes: a plurality of bars extending in a direction from an inner periphery of the refiner segment towards an outer periphery of the refiner segment; a plurality of intermediate areas, each intermediate area disposed between adjacent bars of the plurality of bars and configured to separate each bar from an adjacent bar, wherein at least one of the intermediate areas includes: a channel region having a first side and extending a first depth into the refiner segment, and a ridge region connected to the first side of the channel region and extending a second depth into the refiner segment less than the first depth. The channel region has a width W.sub.1 that gradually decreases in a direction from the outer periphery of the refiner segment toward the inner periphery of the refiner segment, and the ridge region has a width W.sub.2 that correspondingly increases in the direction from the outer periphery of the refiner segment toward the inner periphery of the refiner segment.

A grinding chamber of a grinding device for vegetal products suitable to form beverages includes, in its interior, a pair of grinders axially overlapping each other, one of which is rotatable with respect to the other which is kept stationary, a grinder support at least for the rotatable grinder, a motor member connected to the grinder support for setting the rotatable grinder in rotation. The grinding chamber is formed by a first bottom wall, perpendicular to the axis of rotation of the rotatable grinder, adjacent and below the support thereof, and at least a second cylindrical wall, connected axially to the first wall at the peripheral boundary thereof. The grinding chamber also includes a first opening for introducing the product to be ground and with a second opening for discharging the ground product. A labyrinth is provided between the peripheral boundary of the first wall and the grinder support.

A refining member for a pulp refiner comprising a refining body with a refining surface comprising refiner bars separated by refiner grooves and teeth. Each of the refiner bars extend from a radially inward position on the refining surface to a first radially outward position on the refining surface, and the teeth extend to a second radially outward position on the refining surface. The second radially outward position is nearer to an outermost part of the refining body than the first radially outward position. The refiner bars are adapted to refine wood fibers, and the teeth are adapted to break up fiber bundles.

Disclosed is a refiner plate (1) that is adapted to be attached to a rotatable refiner disc (10) on a refiner (100) for mechanical treatment of lignocellulosic material. The refiner plate (1) comprises a refining surface (11) that is adapted to be arranged oppositely a second refining surface (21) of a second refiner disc (20) on said refiner (100). The refining surface (11) is provided with a plurality of refining bars (110), where at least one of the refining bars (110) is provided with cavities (111) that are at least partially embedded in the refining bars. Moreover, at least one cavity (111) provided on the at least one refining bar (110) have one end (111a) arranged closer to the leading edge (112) of a refining bar (110) and one end (111b) arranged closer to the trailing edge (113) of the refining bar and wherein the depth dimension of the cavity at the end (111a) is smaller than the depth dimension of the cavity at the end (111b).

The invention relates to a refining assembly for refining water-suspended pulp fibers between two coaxial refining surfaces which form a refining gap, rotate in relation to each other and are formed by refining bars and grooves extending therebetween. At least one directional component of the refining bars extends radially in relation to the axis of rotation. In order make the refining process more efficient, the refining bars have annular elevations and depressions that run concentrically to the axis of rotation of the refining surfaces and an annular elevation of one refining surface protruding into an annular depression in an opposite refining surface.