A disc mill assembly of a reducing machine has a housing for housing a first stationary cutting disc in operative interaction with a second rotating cutting disc and separated therefrom by a relative gap distance. The stationary disc is fixed to a housing lid of the housing and the rotating disc is rotatably fixed to a housing body. The relative gap distance between the cutting discs is adjustable by adjusting mechanisms adjusting a relative housing distance between the housing lid and the housing body. A particle size detection analyzer detects the size of particles emanating from the disc mill assembly to generate a detection signal which may be used by the controller to obtain a desired particle size distribution.

A disc mill assembly of a reducing machine has a housing for housing a first stationary cutting disc in operative interaction with a second rotating cutting disc and separated therefrom by a relative gap distance. The stationary disc is fixed to a housing lid of the housing and the rotating disc is rotatably fixed to a housing body. The relative gap distance between the cutting discs is adjustable by adjusting mechanisms adjusting a relative housing distance between the housing lid and the housing body. A particle size detection analyzer detects the size of particles emanating from the disc mill assembly to generate a detection signal which may be used by the controller to obtain a desired particle size distribution.

A powder gathering apparatus includes at least two rotating plates and a driving mechanism. The at least two rotating plates are disposed with respect to each other. Each of the rotating plates includes at least one spherical member. The at least one spherical member protrudes from the rotating plate. The driving mechanism drives at least one of the at least two rotating plates to move, such that the at least two rotating plates get close to or away from each other. The driving mechanism drives the at least two rotating plates to rotate.

A powder gathering apparatus includes at least two rotating plates and a driving mechanism. The at least two rotating plates are disposed with respect to each other. Each of the rotating plates includes at least one spherical member. The at least one spherical member protrudes from the rotating plate. The driving mechanism drives at least one of the at least two rotating plates to move, such that the at least two rotating plates get close to or away from each other. The driving mechanism drives the at least two rotating plates to rotate.

A device for processing high-consistency fibrous material has a housing. First and second treatment tools in the housing are fastened to a base plate, have a rotationally symmetrical form, are arranged coaxially to each other, rotate relative to one another about a common axis and delimit a treatment gap through which the fibrous material radially flows. The gap width of the gap is varied by axially shifting at least one base plate of a treatment tool. In order to determine the minimum distance between the base plates, the oscillations are detected on the device and the distance between the base plates rotating relative to one another is reduced until the frequency and/or the amplitude and/or the change in frequency and/or the change in amplitude of the oscillations exceeds a limit value. The distance when the limit value is exceeded is determined as the minimum distance.

A device for processing high-consistency fibrous material has a housing. First and second treatment tools in the housing are fastened to a base plate, have a rotationally symmetrical form, are arranged coaxially to each other, rotate relative to one another about a common axis and delimit a treatment gap through which the fibrous material radially flows. The gap width of the gap is varied by axially shifting at least one base plate of a treatment tool. In order to determine the minimum distance between the base plates, the oscillations are detected on the device and the distance between the base plates rotating relative to one another is reduced until the frequency and/or the amplitude and/or the change in frequency and/or the change in amplitude of the oscillations exceeds a limit value. The distance when the limit value is exceeded is determined as the minimum distance.

A disk type pulverizer including a pair of disks capable of high-speed rotation is provided. In the disk type pulverizer, a pulverizing object is supplied to a first region on a disk rotation shaft side in a space region between the pair of disks 2 and 3, a minimum space G1min in the first region of the space region is set to be wider than a minimum space G2min in a second region outside the first region of the space region, and a pulverizing part is formed in a part of a counter surface that corresponds to the second region. Each of the pair of disks 2 and 3 includes a central disk part on the first region side and a pulverizing disk part on the second region side, and the pulverizing disk part includes a balance weight part on a part on a side opposite to the counter surface.

A disk type pulverizer including a pair of disks capable of high-speed rotation is provided. In the disk type pulverizer, a pulverizing object is supplied to a first region on a disk rotation shaft side in a space region between the pair of disks 2 and 3, a minimum space G1min in the first region of the space region is set to be wider than a minimum space G2min in a second region outside the first region of the space region, and a pulverizing part is formed in a part of a counter surface that corresponds to the second region. Each of the pair of disks 2 and 3 includes a central disk part on the first region side and a pulverizing disk part on the second region side, and the pulverizing disk part includes a balance weight part on a part on a side opposite to the counter surface.

A device for resetting the position of the grinding wheels in a grinder for beans of plant-based products, whose powder, resulting from grinding, is adapted for use in the preparation of a beverage, particularly coffee.

The grinder comprises a grinding chamber, a pair of grinding wheels housed in said grinding chamber, a grinding wheel being connected to the shaft of a motor, whose axis defines the axial direction (Z-Z) of the grinding wheels, to be rotated, the other grinding wheel, opposite thereto, being stationary against rotation and susceptible of being axially moved in both ways along said axial direction (Z-Z).

The device includes a mechanism for imparting said axial movements to the stationary grinding wheel, an electric motor for actuating said mechanism, a current intensity meter for measuring the current intensity absorbed by the electric motor and a switch for cutting off power to said electric motor upon detection of a value of the current intensity absorbed by said motor representative of zero distance state between the stationary grinding wheel and the rotating grinding wheel, opposite thereto.

A device for resetting the position of the grinding wheels in a grinder for beans of plant-based products, whose powder, resulting from grinding, is adapted for use in the preparation of a beverage, particularly coffee.

The grinder comprises a grinding chamber, a pair of grinding wheels housed in said grinding chamber, a grinding wheel being connected to the shaft of a motor, whose axis defines the axial direction (Z-Z) of the grinding wheels, to be rotated, the other grinding wheel, opposite thereto, being stationary against rotation and susceptible of being axially moved in both ways along said axial direction (Z-Z).

The device includes a mechanism for imparting said axial movements to the stationary grinding wheel, an electric motor for actuating said mechanism, a current intensity meter for measuring the current intensity absorbed by the electric motor and a switch for cutting off power to said electric motor upon detection of a value of the current intensity absorbed by said motor representative of zero distance state between the stationary grinding wheel and the rotating grinding wheel, opposite thereto.