公开(公告)号：EP2389482A1

公开(公告)日：2011-11-30

申请号：EP10701989.5

申请日：2010-01-25

申请人： Kadant Inc.

发明人： JOHNSON, Robert, P. ,  LEEMAN, David, J. ,  BRAUNS, Allen, J.

IPC分类号： D21G3/00

CPC分类号： D21G3/00

摘要： A doctoring system is disclosed for cleaning a moving surface in a papermaking machine, and the doctoring system includes a doctor blade and fluid assist system. The doctor blade(24) is coupled to a doctor blade holder(lθ), and the doctor blade holder(lθ) is coupled to a doctor-back (14 ). The fluid assist system is for providing a fluid under positive pressure that is higher than atmospheric pressure. The fluid is directed in a direction generally opposite a direction of movement of the moving surface (28) such that fluid of high momentum is provided to impinge on water resident within the moving surface and adjacent a leading edge of the doctor blade (24) during movement of the moving surf ace (28).

公开(公告)号：EP1985002A1

公开(公告)日：2008-10-29

申请号：EP07750577.4

申请日：2007-02-14

申请人： Kadant Inc.

发明人： CARSTENSEN, Peter, T.

IPC分类号： H02K41/025 ,  G05B19/02

CPC分类号： H02K41/025 ,  H02P25/06

摘要： The present invention relates to a linear traversing carriage (2) for use in the papermaking industry and the like, which incorporates an air gap inductive motivator (50) and eliminates all mechanical devices between the electrical power supply and the traversing mechanism. Specifically, the present invention relates to a linear traversing device comprising an inductor type linear motor comprising an electrical stator winding (1), a conductive platen (S) extending over an entire traverse lenght of the device, a ferromagnetic material (7) affixed to said conductive platen (6), a support means (3) for supporting the device and maintaining and air-gap between the stator winding (1) and the conductive platen (6), a user selected feed forward velocity map (10) for driving the device, a controller that controls a movement of the device according to the user selectred feed forward velocity map (10).

公开(公告)号：EP1420871A1

公开(公告)日：2004-05-26

申请号：EP02763526.7

申请日：2002-08-26

申请人： Kadant Inc.

发明人： MCGOWAN, David, R.

IPC分类号： B01D29/60 ,  B01D29/66

CPC分类号： B01D29/114 ,  B01D29/60 ,  B01D29/663 ,  B01D29/668 ,  B01D2201/54

摘要： A filter backflushing system including an accumulator containing a pressurized bladder which propels a supply of backwash fluid contained within the accumulator in a reverse direction through a filter element. While the backwash fluid is pumped within the accumulator, an inert gas inside the bladder is compressed against the inside walls of the accumulator. Upon reaching a pressure of approximately 300-600 psi, the filtered fluid is released from the accumulator and the full energy of the compressed gas is released as well. This release produces a high pressure rapid burst of backwash fluid which effectively removes clogging contaminants from a filter element.