| 摘要 |
The present invention concerns an apparatus ( 1 ), preferably for grinding a surface, including at least one grinding unit, a screen ( 2, 3 ) and a guide member ( 5 ), where the grinding unit is a rotatable and preferably horizontally arranged grinding cylinder, which at a cylinder surface is provided with a number of preferably exchangeable grinding elements, where the screen ( 2, 3 ) entirely or partly encloses the grinding unit, and where the guide member ( 5 ) is connected with the screen ( 2 ), and where the screen includes an outer screen ( 2 ) and an inner screen ( 3 ) which are mutually movably connected, and where the inner screen ( 3 ) includes a first suction screen ( 11 ) and a second screen ( 12 ) which are mutually movably connected. |
