Grinding element and grinder stone
AssigneeMetso Paper, Inc.
InventorOlli Tuovinen
Life of this patent
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Abstract
The invention relates to a grinding element, which comprises a substantially planar fastening frame, and where two or more grinding segments made of grinding ceramic material are fastened to the outer surface of the frame by means of bonding agent. The fastening frame preferably comprises at least one fastening hole, and a fastening bolt is supplied through the hole to fasten the grinding element to the frame of the grinder stone. The invention further relates to a grinder stone, where a grinding surface is formed by arranging a required number of grinding elements according to the invention on the outer circumference of the stone's frame.
Claims14
A grinding element adapted to be arranged on an outer surface of a frame for a grinder stone used to defiber wood, the grinding element comprising:
- a plurality of grinding segments, each comprised of a grinding ceramic material;
- a fastening frame having a first surface configured to operably engage the frame of the grinder stone and an opposed second surface configured to receive the grinding segments, the grinding segments cooperating to substantially cover the second surface;
- a bonding agent disposed between the grinding elements and the second surface so as to secure the grinding elements to the second surface;
- and
- a fastening device configured to operably engage the fastening frame and to secure the fastening frame to the frame of the grinder stone such that the grinding segments form at least a portion of a grinding surface of the grinder stone.
A grinder stone adapted to defiber wood, comprising:
- a grinder stone frame defining an outer surface and adapted to be rotatable about a shaft;
- and
- a plurality of grinding elements operably engaged with the outer surface of the grinder stone frame such that the grinding elements cooperate to form a substantially cylindrical grinding surface of the grinder stone, each grinding element comprising:
- a plurality of grinding segments, each comprised of a grinding ceramic material;
- a fastening frame having a first surface configured to operably engage the frame of the grinder stone and an opposed second surface configured to receive the grinding segments, the grinding segments co-operating to substantially cover the second surface;
- a bonding agent disposed between the grinding elements and the second surface so as to secure the grinding elements to the second surface;
- and
- a fastening device configured to operably engage the fastening frame and to secure the fastening frame to the grinder stone frame such that the grinding segments form at least a portion of the grinding surface of the grinder stone.
Dependencies are inferred from the claim text.