Roller mill having rim elements and method for setting an end-face gap of the roller mill
A milling roll of a roll mill may have a roll main body and an edge element that is attached to an end region of a roll end of the milling roll and extends in a radial direction beyond a surface of the roll main body. The edge element comprises a base flange and a spacer element that is attached thereto. Wear protection elements can be attached to the spacer element. Furthermore, a roll mill may have a first milling roll and a second milling roll that are arranged opposite one another and can be driven in opposite directions. A milling gap is disposed between the milling rolls, and an edge element on one of the milling rolls may extend over the milling gap and at least partially cover an end side of the opposite milling roll.
1. A milling roll of a roll mill, comprising:
a roll main body having a milling face; and
an edge element that is attached to an end region of the roll main body, wherein the edge element comprises:
a base flange,
a spacer element that is rigidly attached to the base flange, and
wear protection elements that are attached to the spacer element,
wherein the spacer element is disposed between the wear protection elements and the base flange,
wherein the base flange, spacer element, and wear protection elements each extends in a radial direction beyond the milling face of the roll main body.
2. The milling roll of claim 1 wherein the wear protection elements are fastened releasably to the spacer element using releasable connecting elements.
3. The milling roll of claim 1 wherein the wear protection elements are plate-shaped.
4. The milling roll of claim 1 wherein the base flange is configured as a circularly annular plate.
5. The milling roll of claim 1 wherein the spacer element is configured as a circularly annular plate.
6. The milling roll of claim 1 wherein the spacer element is a first spacer element and is configured as a partially circularly annular plate, wherein at least the first spacer element and a second spacer element are attached to the base flange.
7. The milling roll of claim 1 wherein the wear protection elements are attached releasably to the spacer element.
8. The milling roll of claim 1 wherein the base flange is connected releasably to the roll main body.
9. A roll mill comprising:
a first milling roll and a second milling roll that are arranged opposite one another and are configured to be driven in opposite directions, wherein the first milling roll is the milling roll of claim 1 ; and
a milling gap between the first and second milling rolls,
wherein the edge element of the first milling roll extends over the milling gap and at least partially covers the second milling roll on an end side.
10. The roll mill of claim 9 wherein with respect to the first milling roll the spacer element is fastened releasably to the base flange.
11. The roll mill of claim 9 wherein with respect to the first milling roll the spacer element is plate-shaped.
12. The roll mill of claim 9 wherein with respect to the first milling roll the base flange is configured as a circularly annular plate.
13. The roll mill of claim 9 wherein with respect to the first milling roll the spacer element is configured as a circularly annular plate.
14. The roll mill of claim 9 wherein with respect to the first milling roll the spacer element is a first spacer element and is configured as a partially circularly annular plate, wherein at least the first spacer element and a second spacer element are attached to the base flange.
15. The roll mill of claim 9 wherein with respect to the first milling roll the wear protection elements are attached releasably to the spacer element.
16. The roll mill of claim 9 wherein with respect to the first milling roll the base flange is connected releasably to the roll main body.
17. A method for setting an end-side gap of a roll mill with a first milling roll and a second milling roll that are arranged opposite one another and are configured to be driven in opposite directions, each of the first milling roll and the second milling roll having a cylindrical roll main body with a milling face, wherein a milling gap is disposed between the first and second milling rolls, wherein at each end of the milling gap an end region of one of the milling rolls has an edge element that is configured to extend over the milling gap and at least partially cover an end side of the opposing milling roll, thereby forming the end-side gap between the edge element and the end side of the respective opposite milling roll, with the edge element having a base flange, the method comprising:
rigidly attaching a spacer element to the base flange; and
attaching wear protection elements to the spacer element;
wherein the spacer element is disposed between the wear protection elements and the base flange;
wherein the spacer element and wear protection elements extend radially beyond the milling face of its respective milling roll.
18. The method of claim 17 comprising fastening the spacer element and the wear protection elements releasably.