Method of controlling a position of rotor in a high pressure fee

Details Method of controlling a position of rotor in a high pressure fee Method of controlling a position of rotor in a high pressure fee

1994-09-13

1997-01-28

Alvo, Steven

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With testing, sampling or analyzing

162 52, 162 61, D21C 706

Patent

active

055974465

ABSTRACT:
In an apparatus and method for controlling the position of a rotor in a truncated conical feeder for feeding a feed comprising a lignocellulose material and an alkaline cooking liquor to a pulping digester; the position of the rotor in the feeder is detected by a rotor position detector; and a signal indicating the detected position is input to a control device; the rotor is moved at a distance of 0.03 to 0.4 mm every 0.3 to 4 days by driving an electric motor and moving a shaft of the rotor in response to a signal, when the rotor is moved a predetermined distance, and the rotor-moving motor is stopped by a signal input from the control device.

REFERENCES:
patent: 3822179 (1974-07-01), Chari et al.
patent: 3898124 (1975-08-01), Olsen
patent: 4057461 (1977-11-01), Richter

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