Apparatus and method for grinding lumpy material
AssigneeMoviator Oy
InventorPertti HÄNNINEN
Life of this patent
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Abstract
The object of the invention is an apparatus and a method for grinding lumpy material. The solution according to the invention comprises a grinding plate (2) rotating on the horizontal plane around a vertical axis of rotation, onto the top surface of which the material (3) to be ground can be fed, and on the top surface (8) of which grinding plate is a plurality of grinding discs (4a), which rotate by the effect of the rotating motion of the grinding plate (2) and compress the material to be ground against the grinding plate (2). The apparatus comprises a revolver mechanism for changing the angle of the plane of rotation (RP) of the grinding discs (4a) with respect to a line in the direction of the radius of the grinding plate (2).
Claims15
Apparatus for grinding lumpy material, which apparatus comprises a grinding plate (2) rotating around a vertical axis of rotation on the horizontal plane, onto the top surface of which the material (3) to be ground can be fed, and on the top surface (8) of which grinding plate is a plurality of grinding discs (4a), which rotate by the effect of the rotating motion of the grinding plate (2) and compress the material to be ground against the grinding plate (2), and that in the apparatus is a plurality of grinding disc units (4) comprising grinding disc (4a), each of which grinding disc units (4) is suspended on its own drive shaft (6), which drive shafts (6) are parallel with the axis of rotation of the grinding plate (2), characterized in that the apparatus comprises a revolver mechanism (11) for changing the angle of the plane of rotation (RP) of the grinding discs (4a) by turning the shaft (4b) of the grinding discs (4a) in the horizontal direction with respect to a line (R1) in the direction of the radius of the grinding plate (2), which revolver mechanism (11) preferably comprises e.g. a pressure cylinder and an articulation mechanism suited to the purpose.
Method for grinding lumpy material, the method comprising a grinding plate (2) rotatable on the horizontal plane around a vertical axis of rotation, onto the top surface of which the material (3) to be ground is fed, and on the top surface (8) of which grinding plate the material to be ground is rotated, by means of the rotating motion of the grinding plate (2), against the compressing grinding discs (4a), and that a grinding disc (4a) is forming a grinding disc unit (4), each of which grinding disc units (4) is suspended on its awn drive shaft (6), which drive shafts (6) are parallel with the axis of rotation of the grinding plate (2), characterized in that the angle of the plane of rotation (RP) of the grinding discs (4a) is changed with respect to a line (R1) in the direction of the radius of the grinding plate (2) with a revolver mechanism (11), which revolver mechanism (11) preferably comprises e.g. a pressure cylinder and an articulation mechanism suited to the purpose, creating a grinding friction force between the surfaces of the grinding discs (4a) and the grinding plate (2).
Dependencies are inferred from the claim text.