Roller mill with a synchronizing device
View Patent ↗A roller mill for comminuting bulk material may include a first grinding roller and a second grinding roller that are arranged opposite one another and can be driven in opposite directions. A grinding gap exists between the grinding rollers. A floating bearing unit may be configured to receive the first grinding roller, and a fixed bearing unit may be configured to receive the second grinding roller. The floating bearing unit includes two bearings, each of which receives one end of the first grinding roller. Hydraulic actuators are mounted on the floating bearing unit for applying a force to the floating bearing unit. The bearings of the floating bearing unit are connected to one another via a synchronization device that includes a coupling element, which in a coupling position prevents a relative movement of the bearings and in a free position permits a relative movement of the bearings.
1. A roller mill for comminuting bulk material, comprising:
a first grinding roller and a second grinding roller that are arranged opposite one another and are configured to be driven in opposite directions, wherein a grinding gap exists between the first and second grinding rollers;
a floating bearing unit configured to receive the first grinding roller, wherein the floating bearing unit includes two bearings, each of the two bearings being configured to receive an end of the first grinding roller;
a fixed bearing unit configured to receive the second grinding roller;
hydraulic actuators mounted on the floating bearing unit, the hydraulic actuators being configured to apply a force to the floating bearing unit; and
a synchronization device, wherein the two bearings of the floating bearing unit are connected to one another via the synchronization device, wherein the synchronization device includes a coupling element that in a coupling position prevents a relative movement of the bearings and in a free position permits a relative movement of the bearings.
2. The roller mill of claim 1 wherein the synchronization device includes a rotatable shaft and at least two thrust rods, wherein a first end of each thrust rod is connected to the rotatable shaft and a second end of each thrust rod is connected to a respective bearing of the floating bearing unit, wherein the at least two thrust rods are connected to the respective bearing of the floating bearing unit and/or the rotatable shaft via the coupling element in each case.
3. The roller mill of claim 1 wherein the coupling element comprises a linear guide.
4. The roller mill of claim 1 wherein the synchronization device includes a rotatable shaft and at least two thrust rods, wherein a first end of each thrust rod is connected to the rotatable shaft and a second end of each thrust rod is connected to the floating bearing unit, wherein the thrust rods and/or the rotatable shaft comprises the coupling element.
5. The roller mill of claim 4 wherein the coupling element comprises a linear guide, wherein the linear guide includes a stop configured to delimit the relative movement of the bearing relative to the thrust rod.
6. The roller mill of claim 4 wherein the coupling element is a first coupling element that is disposed at least partially in a first of the thrust rods, wherein a second of the thrust rods includes a second coupling element.
7. The roller mill of claim 1 wherein the coupling element comprises a hydraulic actuator.
8. The roller mill of claim 7 wherein the coupling element is a first coupling element, the roller mill comprising a second coupling element, with the first and second coupling elements being hydraulically connected to one another.
9. The roller mill of claim 1 wherein the synchronization device includes a rotatable shaft and a thrust rod, wherein the coupling element comprises a hollow cylinder in an end region of the thrust rod, wherein a first end of the thrust rod is connected to the rotatable shaft and a second end of the thrust rod is connected to a bearing of the floating bearing unit.
10. The roller mill of claim 1 wherein the synchronization device includes a rotatable shaft and at least two thrust rods, wherein a first end of each thrust rod is connected to the rotatable shaft and a second end of each thrust rod is connected to a respective bearing of the floating bearing unit, wherein the at least two thrust rods are connected to the respective bearing of the floating bearing unit and/or the rotatable shaft via the coupling element in each case, wherein the rotatable shaft includes a first shaft portion and a second shaft portion that are connected to one another via the coupling element.
11. The roller mill of claim 10 wherein the coupling element is configured as a claw coupling.