公开(公告)号：EP1084473A4

公开(公告)日：2005-05-25

申请号：EP99927309

申请日：1999-06-07

申请人： HONEYWELL MEASUREX CORP

发明人： HAGART-ALEXANDER CLAUD ,  HU HUNG-TZAW ,  WATSON JOHN DAVID ,  PRESTON JOHN G

IPC分类号： D21F1/02 ,  D21F7/02 ,  D21G9/00 ,  G06F17/00 ,  G06F19/00 ,  G06G7/66

CPC分类号： D21G9/0027

摘要： The system controls formation of wet stock (55) comprising fibers on a moving water permeable wire (13) of a de-watering machine that has a refiner (135) that is subject to a variable load and a headbox (10) having at least one slice (50), wherein each slice (50) has an aperture through which wet stock (55) is discharged at a stock jet speed onto the wire (13) that is moving at a wire (13) speed. A sheet of wet stock (55) moving a speed develops on the wire (13). The system includes: a) at least two water weight sensors (42A-42E) that are positioned adjacent to the wire wherein the at least two sensors (42A-42E) are positioned at different locations in the direction of movement of the wire (13) and upstream from a dry line (43) which develops during operation of the machine and the sensors (42A-42E) generate signals indicative of a water weight profile made up of a multiplicity of water weight measurements; and b) adjustability of at least one of the stock jet speed, sheet speed, wire speed, or refiner load to cause the water weight profile to match a preselected or optimal water weight profile.