Control system for a repulping apparatus

Details Control system for a repulping apparatus Control system for a repulping apparatus

1997-10-31

2000-03-07

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

With automatic control

241 4617, B02C 2500

Patent

active

060328851

ABSTRACT:
A control system for a repulping apparatus having a vat containing a pulp and water slurry and a rotatable blade for mixing the pulp and water to form the slurry. A feed apparatus moves the pulp into the vat and a feed indicator senses the entry of the pulp into the vat and produces an entry signal indicative of the pulp entering the vat. A controller responsive to the pulp entry signal calculates the volume of water to be added to the vat and the water flow rate to provide a predetermined consistency in the slurry and produces a signal representative of the calculated volume of water. A water volume control receives and is responsive to the calculated water volume signal to control the admitting of water into the vat. The controller also produces a signal representative of the calculated rate of flow. A flow control is responsive to the calculated water volume signal and to the calculated rate of flow signal to admit water into the vat at the calculated rate of flow. The slurry mixed in the vat is discharged to a dump chest and a dump chest level sensor monitors the level of the slurry in the dump chest. The dump chest level sensor produces a signal to the feed apparatus to increase or decrease the rate of pulp delivery into the vat depending on the level of the slurry in the dump chest.

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