Method and system for detecting plate clashing in disc refiners

Details Method and system for detecting plate clashing in disc refiners Method and system for detecting plate clashing in disc refiners

1978-06-07

1980-11-11

Swann III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

241 33, 241 37, G08B 2100

Patent

active

042336007

ABSTRACT:
A refiner plate clash detection system and method for plate clash detection is provided herein. The system includes a receiver for a first signal having a significant increase in level at at least one distinct predetermined frequency related to the clash and the characteristics of the discs of the refiner. A filter is provided having a passband matched to pass the distinct frequency of the signal to provide a filtered output signal in which the center frequency of the passband of the filter is determined by the formula

REFERENCES:
patent: 2235928 (1941-03-01), Hardinge
patent: 2799015 (1957-07-01), Bell
patent: 3799456 (1974-03-01), Jewell et al.
patent: 3836854 (1974-09-01), Wehman
patent: 4073442 (1978-02-01), Virving

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