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Method of operating a disk refiner provided with reversible refining plates
| Details |
Inventors: Seifert, Peter; Chupka, David E.; Getz, Lynn L.; Hatton, Derald R.; Thomas, R. Marvin; Osso, John M.; Rogl, Herbert A.;
Assignee: The Black Clawson Company (Middletown, OH)
Primary Examiner: Goldberg; Howard N.
Assistant Examiner:
Attorney, Agent or Firm: Biebel, French & Nauman
A disk refiner is provided with refiner plates having a working surface on each side thereof, and these plates are first mounted with one working surface in face to face engagement with the supporting face of the stator or rotor of the refiner. After the exposed working surfaces of the plates have been substantially worn away by use of the refiner, the plates are temporarily removed, their worn surfaces are ground into substantial parallellism with their unused working surfaces, and they are then replaced in the refiner with their ground surfaces engaging the faces of the stator and rotor. |
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DETAILED DESCRIPTION The present invention has as its primary objective the provision of refiner plates which are initially manufactured with working surfaces on both sides so that when one surface has been worn down, the plates can be turned over to present a fresh working surface.
It is therefore also essential to accomplishment of this objective to make it possible to mount the refiner plates so that they are equally effective when both working surfaces are new as well as when one surface has been worn away and the plates have been reversed.
Refiner plates in accordance with the invention for mounting on the stator of a disk-refiner are accordingly manufactured as an annular plate, or a series of segmental plates, having identical working surfaces composed of alternating bars and grooves arranged in the desired pattern on both sides thereof.
In accordance with the invention, the refiner plate is mounted in face to face engagement with its mounting seat on the stator.
Bolt holes are provided in the plate in suitable positions for mounting the plate with either surface exposed.
If the worn surface of a plate is out of parallel with the still unused working surface of the plate, it is ground to accurate parallelism before it is remounted for use of its still unused surface.
In both forms of the invention, special provision is made to block the grooves in each unused working surface against bypass flow of stock therethrough.
The principles of the invention are equally applicable to the rotor, and similar reversible plates may be mounted on one or both sides of a rotor disk by either of the arrangements just described for the stator.
In an alternate construction for a twin-disk refiner, the rotor is fabricated as a hub on which is mounted a replaceable annular refiner plate having working surfaces on both sides thereof.
With either arrangement, in a twin-disk refiner, four sets of working surfaces are obtained with one half as many refiner plates as with conventional constructions.
These and other objectives of the invention will in part be apparent and in part be pointed out in the course of the detailed description of preferred embodiments of the invention
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Generators or Motors 
