Spur wheel scraper
AssigneeMetso USA Inc.
InventorsBrandon John Schuerman, Wayne Eugene Myers, Steven E. Richardson
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a roller crusher including a first grinding roll and a second grinding roll, the first and second grinding rolls being arranged generally in parallel to each other and to define a crushing gap therebetween and drivable in a counter-rotating manner. The roller crusher includes a device of a first type for loosening granular material present on a crushing surface of at least one of the rolls, the device including at least one rotatable disc element. The subject further relates to a roller crusher, wherein the plurality of disc elements is individually rotatable.
Claims18
A roller crusher comprising a first grinding roll and a second grinding roll, said first and second grinding rolls being arranged in parallel to each other and to define a crushing gap therebetween and drivable in a counter-rotating manner, wherein the roller crusher comprises a device of a first type arranged to loosen granular material present between a crushing surface and a flange attached to at least one of the first and the second end of at least one of the two grinding rolls, wherein the device comprises at least one rotatable disc element spaced from and adjacent to the crushing surface and positioned to contact only the granular material present on the grinding roll between the crushing surface and the flange such that the at least one rotatable disc element maintains a predetermined thickness of the granular material on the crushing surface of the grinding roll.
A method for loosening granular material present between a crushing surface and a flange of at least one roll of a roller crusher, said roller crusher comprising a first grinding roll and a second grinding roll, said first and second grinding rolls each presenting a respective crushing surface and being arranged in parallel to each other to define a crushing gap therebetween and drivable in a counter-rotating manner, wherein a flange is attached to one of a first and a second end of at least one of the two grinding rolls, said method comprising the following step
- providing a device of a first type on the roller crusher, said device comprising the least one rotatable disc element, said at least one rotatable disc element being arranged to face said at least one roll and being adjacent to the crushing surface and the flange of the roll such that, when build-up of granular material between the crushing surface and the flange of the roll reaches a predefined thickness, the at least one rotatable disc element contacts the granular material between the crushing surface and the flange to remove the granular material.
A refitting kit for a roller crusher having a first grinding roll and a second grinding roll, said first and second grinding rolls being arranged in parallel to each other and to define a crushing gap therebetween and drivable in a counter-rotating manner, wherein the refitting kit comprises a device of a first type for loosening granular material present between a crushing surface and a flange attached to at least one of the first and the second end of at least one of the two grinding rolls, wherein the device comprises at least one rotatable disc element spaced from and adjacent to the contact surface and positioned to contact only the granular material present on the grinding roll between the crushing surface and the flange such that the at least one rotatable disc element maintains a thickness of the granular material on the crushing surface of the grinding roll.
Dependencies are inferred from the claim text.