Sealing bar for centrifugal grinders

Details Sealing bar for centrifugal grinders Sealing bar for centrifugal grinders

1987-07-21

1988-06-21

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Stationary comminuting surface or material bed

B02C 1912

Patent

active

047520396

ABSTRACT:
A centrifugal grinder for pulp wood and wood chips has a stationary internal grinding surface and a rotor rotating within the surface. The rotor has an axial feed passage for stock to be ground, and at least one passageway extending from the passage to the grinding surface. A guideway in the rotor is disposed at an angle to the grinding surface and is located such that, as the rotor rotates, the guideway sweeps over the portion of the grinding surface in contact with the stock to be ground. A sealing bar is located in the guideway, the bar being of a material softer than the grinding surface so that it can be worn down into conformity with the surface. A rack within the guideway is connected to the sealing bar, and a pinion engages the rack. The rotational position of the pinion can be incrementally adjusted to advance the sealing bar toward the grinding surface, and the play between the rack and the pinion is sufficient to allow the sealing bar to be worn into substantial conformity with the grinding surface after the surface has been sharpened.

REFERENCES:
patent: 4401277 (1983-08-01), Thumm et al.
patent: 4474335 (1984-10-01), Wildey

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