Roller mill with a scraper

1. A roller mill ( 1 ) comprising:

a housing ( 2 ) having a milling-material inlet ( 3 ),

at least one milling-material outlet ( 4 ), and at least two cambered rollers ( 5 , 5 ′) which are each arranged in the housing ( 2 ) so as to be rotatable about a roller axis ( 6 ),

wherein at least one roller ( 5 ) is assigned a scraper ( 7 ), and the scraper ( 7 ):

has a blade ( 8 ) for scraping milling material from a roller surface ( 9 ) with a scraper edge ( 10 ) which extends over an entire length (L) of the blade ( 8 ), and

comprises a holder ( 11 ) with a receiving region ( 12 ), the holder is arranged in the housing ( 2 ) so as to be tiltable about an axis ( 13 ) parallel to the roller axis,

an elastic bearing ( 14 ) is arranged between the blade ( 8 ) and the receiving region ( 12 ), and

wherein the receiving region ( 12 ) has the form of a groove ( 15 ), and the elastic bearing ( 14 ) is arranged at least between a groove wall ( 16 ) and the blade ( 8 );

wherein the blade ( 8 ) is arranged in such a way that the scraper edge ( 10 ) is parallel to the roller axis ( 6 ) when the blade ( 8 ) does not contact the roller surface.

2. The roller mill ( 1 ) as claimed in claim 1 , wherein the elastic bearing ( 14 ) is arranged between the blade ( 8 ) and both groove walls ( 16 , 16 ′).

3. The roller mill ( 1 ) as claimed in claim 1 , wherein the blade ( 8 ) abuts on a groove bottom ( 17 ).

4. The roller mill ( 1 ) as claimed in claim 1 , wherein the blade ( 8 ) and the elastic bearing ( 14 ) are held in a clamping profile ( 18 ) which is arranged in the receiving region ( 12 ).

5. The roller mill as claimed in claim 1 , wherein the blade ( 8 ) has a ratio between a length (L) and width (B) of 1.6:1 to 300:1.

6. The roller mill ( 1 ) as claimed in claim 1 , wherein the blade ( 8 ) has a ratio between the height (H) and the free height (FH) of more than 1:1 to 6:1.

7. The roller mill ( 1 ) as claimed in claim 1 , wherein the blade ( 8 ) is arranged at an angle (a) of between 200 and 75° to the roller surface ( 9 ).

8. The roller mill ( 1 ) as claimed in claim 1 , wherein the elastic bearing ( 14 ) is formed as an elastomer strip with a Shore 00 hardness of between 15 and 100.

9. The roller mill ( 1 ) as claimed in claim 1 , wherein the holder is provided with a counterweight ( 19 ) by means of which the blade ( 8 ) can be tilted about the axis ( 13 ) and can be pressed against the roller surface ( 9 ).

10. The roller mill ( 1 ) as claimed in claim 1 , wherein the scraper ( 7 ) is in operative connection with a lift-off device by means of which the blade ( 8 ) can be tilted about the axis ( 13 ) and can be moved away from the roller surface ( 9 ).

11. The roller mill ( 1 ) as claimed in claim 1 , wherein the blade ( 8 ) is received over its entire length (L) in the receiving region ( 12 ).

12. The roller mill ( 1 ) as claimed in claim 1 , wherein the blade ( 8 ) is arranged at an angle (a) of between 30° and 60° to the roller surface ( 9 ).

13. The roller mill ( 1 ) as claimed in claim 1 , wherein the elastic bearing ( 14 ) is formed as an elastomer strip with a Shore 00 hardness of between 30 and 90.

14. The roller mill ( 1 ) as claimed in claim 1 , wherein the blade ( 8 ) is arranged at an angle (a) of between 30° and 50° to the roller surface ( 9 ).

15. The roller mill ( 1 ) as claimed in claim 1 , wherein the elastic bearing ( 14 ) is formed as an elastomer strip with a Shore 00 hardness of between 40 and 80.