A material bed roller mill for comminution of grain in a material bed. The material bed roller mill comprises rollers, at least one feed opening, a draw-in region between the rollers, a grinding gap between the rollers and at least one delivery opening. The material bed roller is configured, during operation, to produce a material bed in the draw-in region and to draw grain from a surplus thereof by a filled material duct or hopper. A specific grinding force of the material bed roller mill can be set in such a way that grain is heated, during the grinding operation, by less than 30° C., preferably by less than 15° C., to the temperature of the grain before the respective grinding.

A material bed roller mill for comminution of grain in a material bed. The material bed roller mill comprises rollers, at least one feed opening, a draw-in region between the rollers, a grinding gap between the rollers and at least one delivery opening. The material bed roller is configured, during operation, to produce a material bed in the draw-in region and to draw grain from a surplus thereof by a filled material duct or hopper. A specific grinding force of the material bed roller mill can be set in such a way that grain is heated, during the grinding operation, by less than 30° C., preferably by less than 15° C., to the temperature of the grain before the respective grinding.

A method and an apparatus for controlling a milling roll machine capable of accurately monitoring a surface temperature of a roll and preventing a high temperature abnormality occurring on a roll surface from being overlooked are provided A temperature sensor S that monitors surface temperatures of a pair of rolls 4 and 5 and a temperature of a milled product after passing through the rolls is provided in the vicinity of the pair of rolls 4 and 5, and opening/closing control of the gap between the rolls 4 and 5 or flow rate control of the raw material stock is performed according to the surface temperatures of the rolls and the temperature of the milled product after passing through the rolls detected by the temperature sensor S.

A method and an apparatus for controlling a milling roll machine capable of accurately monitoring a surface temperature of a roll and preventing a high temperature abnormality occurring on a roll surface from being overlooked are provided A temperature sensor S that monitors surface temperatures of a pair of rolls 4 and 5 and a temperature of a milled product after passing through the rolls is provided in the vicinity of the pair of rolls 4 and 5, and opening/closing control of the gap between the rolls 4 and 5 or flow rate control of the raw material stock is performed according to the surface temperatures of the rolls and the temperature of the milled product after passing through the rolls detected by the temperature sensor S.

A method of producing flour and/or semolina by raw material being fed into a feed opening of a roller press. The milling gap of the roller press is fixed, or damping of at least one of the rollers with respect to the lateral deflection is set, such that a first subset of the fill containing finer milling material forms a packed particle fill in the milling gap. In addition, the setting is carried out in such a way that individual particles of a second subset of the fill containing coarser milling material are in contact with the first roller and the second roller of the roller press. Subsequently, the bulk material is milled into milled product in the roller press (9) and the milled product is discharged through a discharge opening.

A method of producing flour and/or semolina by raw material being fed into a feed opening of a roller press. The milling gap of the roller press is fixed, or damping of at least one of the rollers with respect to the lateral deflection is set, such that a first subset of the fill containing finer milling material forms a packed particle fill in the milling gap. In addition, the setting is carried out in such a way that individual particles of a second subset of the fill containing coarser milling material are in contact with the first roller and the second roller of the roller press. Subsequently, the bulk material is milled into milled product in the roller press (9) and the milled product is discharged through a discharge opening.

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 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 roller mill module with a fixed grinding roller with a first grind surface rotatably supported within a grind area between a first drive end and a second drive end of a support structure; an adjustable grinding roller with a second grind surface rotatably supported within the grind area; the adjustable grinding roller movable with respect to the fixed grinding roller to adjust a grind gap between the first grind surface and the second grind surface; a drive shaft of the fixed grinding roller and a drive shaft of the adjustable grinding roller extending from the first and the second drive ends of the support structure; and a sample port provided in a front side of the support structure; a sample passage coupled to the sample port extending to a position below the grind area and opposite a sampler stop surface.

A roller mill module with a fixed grinding roller with a first grind surface rotatably supported within a grind area between a first drive end and a second drive end of a support structure; an adjustable grinding roller with a second grind surface rotatably supported within the grind area; the adjustable grinding roller movable with respect to the fixed grinding roller to adjust a grind gap between the first grind surface and the second grind surface; a drive shaft of the fixed grinding roller and a drive shaft of the adjustable grinding roller extending from the first and the second drive ends of the support structure; and a sample port provided in a front side of the support structure; a sample passage coupled to the sample port extending to a position below the grind area and opposite a sampler stop surface.