Vacuum control system for dewatering fabrics

Details Vacuum control system for dewatering fabrics Vacuum control system for dewatering fabrics

D - Textiles, Paper

21

F

92/15.3, 92/15.5

D21F 1/48 (2006.01) B01D 33/04 (2006.01) D21F 7/12 (2006.01) D21F 11/02 (2006.01)

Patent

CA 1170092

VACUUM CONTROL SYSTEM FOR DEWATERING FABRICS ABSTRACT OF THE DISCLOSURE A vacuum control system for dewatering fabrics on a papermaking machine including a suction pipe and a vacuum pump connected to the suction pipe to supply a desired vacuum level. The fabric is passed over a slot in the suction pipe so that suction applied therethrough will dewater the fabric. Controls are connected to the suction pipe and to the vacuum pump responsive to an increase in the vacuum level in the suction pipe as fabric permeability decreases to correspondingly lower the speed of the vacuum pump and retain the desired vacuum level in the suction pipe.

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