System and method for controlling continuous mixer with melt pum

Details System and method for controlling continuous mixer with melt pum System and method for controlling continuous mixer with melt pum

1992-03-13

1993-01-12

Smith, Jerry

Boots, shoes, and leggings

264 403, 264 407, 366 77, 366132, 425145, G06F 1546

Patent

active

051795213

ABSTRACT:
An improved system and method for effectively controlling the operation of a continuous mixer/melter having an adjustable exit opening and connected to a melt pump is provided. The melt pump, which is preferably a gear pump, is operatively connected to an extruder/pelletizer. Operation of the gear pump is controlled in proportional relation to the energy requirements of the mixer/melter motor, the energy applied to adjust and maintain the exit opening of the mixer/melter, and the suction pressure measured at the interface between the mixer/melter and the gear pump. A microprocessor unit which receives and processes the input signals, calculates the energy requirements of the gear pump motor and compares these requirements with the actual torque, makes the necessary adjustments to the gear pump.

REFERENCES:
patent: 4310251 (1982-01-01), Scharer et al.
patent: 4328549 (1982-05-01), Avery
patent: 4452750 (1984-06-01), Handwerk et al.
patent: 4501498 (1985-02-01), McKelvey
patent: 4707139 (1987-11-01), Valenzky et al.
patent: 5062052 (1991-10-01), Sparer et al.

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