Method and apparatus for controlling wood pulp grinding machines

Details Method and apparatus for controlling wood pulp grinding machines Method and apparatus for controlling wood pulp grinding machines

1979-09-27

1981-10-13

Goldberg, Howard N.

Solid material comminution or disintegration

Processes

Miscellaneous

241 33, 241282, B02C 2500

Patent

active

042944120

ABSTRACT:
Disclosed herein are apparatus and method for measuring, during operation, the degree of sharpness of grindstones in a wood pulp grinding machine of the type where one motor drives two grindstones, each having two or more pockets for loading timber. In accordance with the apparatus and method, the power of the motor and the feed rates of the pockets are simultaneously measured. After a predetermined time interval, during which the operating conditions of the machine change, these measurements are made again. The degree of sharpness of the grindstones can then be calculated using the measured values of power and feed rates.

REFERENCES:
patent: 3690568 (1972-09-01), Alexander
patent: 3693891 (1972-09-01), Remmer
patent: 3776475 (1973-12-01), Perry
patent: 3815763 (1974-06-01), Biloco et al.
patent: 3947668 (1976-03-01), Al-Shaikh et al.
"Operating Model of a Grinder" by H. Paulapuro, No. 1, 1976, Papper Och. Tra.
"Grinding Mechanism and Relation of Energy and Pulp Quality", D. Alexander, Paper Trade Journal, 8-9, 1971, pp. 26-29.
"Analysis of Grinding Variables", J. Bergstrom et al., Svensk Papperstidning, No. 11, 6-15, 1957.
"Pulp and Paper Chemistry and Chemical Technology", J. Casey, (N.Y., 1960), vol. 1, 2nd Edition.

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