A method and apparatus for grinding fresh stock, comprising comminuting the fresh stock in a first roller press roller gap into ground grinding stock, dividing the ground grinding stock via an adjustable divider into a first and second part stream in a variably adjustable ratio and comminuting the ground grinding stock of the first part stream in a second roller press. The adjustable divider divides ground grinding stock into an intermediate stream comprising ground grinding stock issuing from an intermediate roller gap region, and into two peripheral streams each comprising ground grinding stock issuing from one of the two roller gap peripheral regions. The two peripheral streams are combined to form the first part stream and the intermediate stream forms the second part stream. The second part stream is conveyed from the divider into a bypass line, passing the second roller press.

A roller mill (10) for grinding material, an aspirating assembly (23; 23) and a method of retrofitting an existing roller mill. The roller mill (10) contains a grinding space (11, 11) for grinding material, a separating wall (17) separates the grinding space from an aspiration space (21, 21). At least one aspiration opening (13), is formed in the separating wall (17) through which aspiration air can flow due to a pressure difference between the aspiration space and the grinding space. The roller mill (10) has a closing element (14) for opening and closing the aspiration opening (13). The closing element (14) is in or moves into an opening position (O), which opens the aspiration opening (13), when the pressure difference exceeds a threshold value, and is in or moves into a closing position (S), which closes the aspiration opening (13), when the pressure difference falls bellow the threshold value.

A high pressure roll press has two counter-rotating rolls configuring a roll nip through which milling material passes and is comminuted under high pressure by forming a fracture in a milling material structure in the roll nip. A feeder device feeds the milling material homogeneously onto the roll nip. The volume of the fed milling material configures a compaction zone, which reaches from approximately the center of the roll nip to just beyond the center of the roll nip. A vibration device for pre-compressing the milling material is arranged above the compaction zone, reaching into the compaction zone. A metering slide is arranged within the feeder device to set the feeding location and the feeding quantity of the milling material onto the roll nip. The vibration device is connected to the metering slide, wherein the metering slide conducts the vibration energy of the vibration device into the compaction zone.

A deflection distributor refitting kit for a roller crusher. The deflection distributor refitting kit includes a deflection distributing shaft, thrust rods each having first and second ends and mounts for attachment of the deflection distributing shaft at a frame of the roller crusher. A first end of each of the thrust rods is attached to the deflection distributing shaft via a lever. A second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher. The deflection distributing shaft includes first and second shaft parts which are interconnected by means of a shock absorbing unit. A method for mounting the deflection distributor refitting kit, as well as a roller crusher including the deflection distributor.

A system and method for flaking. The system includes a stationary roller, and moveable roller, and an adjustable fixator applying tension between the stationary and moveable rollers. The fixator includes a pressure transducer and a linear indicator. The transducer and indicator allow the fixator to read pressures and make fine adjustments to the fixator to obtain a desired gap between the two rollers.

A tool for feeding material into a mill having a roller and forming a nip gap. The tool broadly comprises a baseplate, a guide plate, and a ram. The baseplate is configured to be positioned on the mill over the roller and forms a slot. The guide plate is configured to be positioned in the slot of the baseplate near the nip gap. The guide plate forms a chute for feeding the material into the nip gap. The ram is configured to be inserted into the chute to urge the material into the nip gap while preventing a user's fingers and other foreign objects from nearing the nip gap through the chute.

A defibrating unit includes a rotating unit and a fixing unit. The rotating unit and the fixing unit are arranged so as to be apart from each other with a gap therebetween in an intersecting direction that intersects with a rotating shaft of the rotating unit. The rotating unit includes a surface that stands up along an axial direction of the rotating shaft and that is arranged on a side section in the axial direction and arranged at a side where a defibration object is introduced. The fixing unit includes a plurality of plates that are layered in the axial direction, and the plates has a plurality of convexities that protrude at a side facing the rotating unit.

A system and method for flaking. The system includes a stationary roller, and moveable roller, and an adjustable fixator applying tension between the stationary and moveable rollers. The fixator includes a pressure transducer and a linear indicator. The transducer and indicator allow the fixator to read pressures and make fine adjustments to the fixator to obtain a desired gap between the two rollers.

A defibrating unit includes a rotating unit and a fixing unit. The rotating unit and the fixing unit are arranged so as to be apart from each other with a gap therebetween in an intersecting direction that intersects with a rotating shaft of the rotating unit. The rotating unit includes a surface that stands up along an axial direction of the rotating shaft and that is arranged on a side section in the axial direction and arranged at a side where a defibration object is introduced. The fixing unit includes a plurality of plates that are layered in the axial direction, and the plates has a plurality of convexities that protrude at a side facing the rotating unit.

A sheet manufacturing apparatus includes a defibrating unit and a sheet forming unit. The defibrating unit includes a rotating unit and a housing, and is configured to carry out a dry-type defibrating process by rotating the rotating unit. The housing includes a cover portion and a fixing unit attached to the cover portion and spaced apart from the rotating unit in a direction perpendicular to an axial direction of the rotating unit so as to form a gap between the rotating unit and the fixing unit. The sheet forming unit is configured to form a sheet by accumulating defibrated material. The rotating unit includes a rotor having protruding sections on an outer circumference of the rotor, and a feeding blade arranged on a side section of the rotor on a side of an input section for the defibration object and configured to generate a flow of air.