Paper making and fiber liberation – Processes and products – With measuring – inspecting and/or testing
Patent
1996-11-12
1998-05-19
Czaja, Donald E.
Paper making and fiber liberation
Processes and products
With measuring, inspecting and/or testing
162 29, 162252, 162263, D21F 106
Patent
active
057530815
ABSTRACT:
The invention is directed to a paper machine including a headbox having an inlet and an outlet. A fluid conduit is connected to the inlet of the headbox. A sensor is disposed in communication with an interior of the headbox. The sensor senses a pressure of the fiber suspension within the headbox and provides a signal corresponding thereto. A first pump is connected to the fluid conduit and supplies a fiber suspension to the headbox through the fluid conduit. A second pump is connected to the fluid conduit between the first pump and the headbox, and further is connected to the sensor. The second pump is a substantially pulseless pump, and transports the fiber suspension away from the fluid conduit, dependent upon the sensed signal.
REFERENCES:
Ericson, R. Barry, "Pulsation Measurement in Stock Approach Systems," Tappi Journal, vol. 59, No. 8, pp. 82-84, Aug. 1976.
Sine Pump.RTM. by Sundstrand Fluid Handling Corporation, product information (Internet site http://www.sfh.com/spdp/index.html) 1996.
Czaja Donald E.
Leavitt Steven B.
Voith Sulzer Paper Technology North America Inc.
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