Back to results
US 8,262,006 B2Granted
Roll mill
AssigneePolysius AG
InventorsMarkus Berger, Pedro Guerrero Palma
Life of this patent
Estimating the term…
Abstract
The invention relates to a roll mill having a grinding plate rotatable about an axis of rotation, at least one grinding roller in rolling engagement with the grinding plate, and a main drive for driving the grinding plate. An auxiliary drive for driving the grinding plate, and a regulating device are also provided, the regulating device including at least one damping regulator which regulates the auxiliary drive in dependence on torque variations of the main drive and/or variations in the speed of rotation of the grinding plate.
Claims13
A roll mill having:
- a. a grinding plate (2) rotatable about an axis of rotation (1),
- b. at least one grinding roller (3, 4) in rolling engagement with the grinding plate, and
- c. a main drive (5) for driving the grinding plate,
- characterised in that at least one auxiliary drive (13) for driving the grinding plate (2), and a regulating device (15) are provided, wherein the regulating device includes at least one damping regulator (16, 21) which regulates the auxiliary drive in dependence on torque variations of the main drive (5) and/or variations in the speed of rotation of the grinding plate (2).
1 more element
A method of operating a roll mill comprising:
- providing a roll mill having:
- a. a grinding plate (2) rotatable about an axis of rotation (1),
- b. at least one grinding roller (3,4) in rolling engagement with the grinding plate,
- c. a main drive (5) for driving the grinding plate,
- d. at least one auxiliary drive (13) for driving the grinding plate (2), and
- e. a regulating device (15),
- wherein the regulating device regulates the auxiliary drive in dependence on torque variations of the main drive 5 and/or variations in the rotation speed of the grinding plate 2, in order to damp the torque variations of the main drive (5) and/or the rotation speed variations of the grinding plate (2).
4 more elements
Dependencies are inferred from the claim text.