Solid material comminution or disintegration – Apparatus – Comminuting elements
Patent
1981-07-01
1984-01-31
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
Comminuting elements
2412612, B02C 712
Patent
active
044285388
ABSTRACT:
A grinding disc for a disc refiner is disclosed. The grinding disc is comprised of a plurality of packs of strips. Each pack of strips is comprised of a plurality of parallel grinding strips which alternate with intermediate strips. The rear-to-front grinding surface height of the grinding strips is greater than that of the intermediate strips. Annular supporting rings define the radially inward and outward ends of the grinding strips. The grinding strips extend generally radially of the grinding disc. In an alternate embodiment, the intermediate strips are of meandering shape, whereby one intermediate strip extends between pluralities of adjacent grinding strips. The grinding and intermediate strips of a pack thereof are welded together and are welded to the supporting rings. An additional ring may be positioned to the rear of the strips intermediate the radially inward and outward ends thereof. Attachment holes for attaching the grinding disc to a support pass front to back through the grinding disc in the radial region of the additional ring.
REFERENCES:
patent: 246476 (1881-08-01), Derby
patent: 3745645 (1973-07-01), Kurth et al.
patent: 4023737 (1977-05-01), Leider et al.
patent: 4157669 (1979-06-01), Pilao
J. M. Voith GmbH
Rosenbaum Mark
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