Device for diluting fibrous stock

Abstract

Device for diluting a fibrous stock that includes a drum and a displacer. A center line of the drum is oriented at at least an angle of about 10° from horizontal. At least one feed opening is structured and arranged to feed the fibrous stock, at least one discharge opening is structured and arranged to discharge the fibrous stock, and the displacer includes a rotor. A drive is coupled to the rotor to transmit necessary energy for dilution.

What is claimed:  
     
         1 . A device for diluting a fibrous stock comprising: 
 a drum and a displacer, wherein a center line of said drum is oriented at at least an angle of about 10° from horizontal;    at least one feed opening structured and arranged to feed the fibrous stock;    at least one discharge opening structured and arranged to discharge the fibrous stock;    said displacer comprising a rotor; and    a drive coupled to said rotor to transmit necessary energy for dilution.    
     
     
         2 . The device in accordance with  claim 1 , further comprising an upper face in an upper region of said drum and a lower face in a lower region of said drum, wherein said at least one feed opening is arranged on said upper face and said at least one discharge opening is arranged on said lower face.  
     
     
         3 . The device in accordance with  claim 1 , wherein the center line of said drum is oriented at an angle of no more than about 45° from vertical.  
     
     
         4 . The device in accordance with  claim 3 , wherein the center line of said drum is oriented at an angle of no more than about 30° from vertical.  
     
     
         5 . The device in accordance with  claim 1 , wherein said drum is stationarily mounted.  
     
     
         6 . The device in accordance with  claim 1 , wherein said rotor and said drum are concentrically arranged in relation to each other.  
     
     
         7 . The device in accordance with  claim 1 , wherein a core of said rotor is drum-shaped.  
     
     
         8 . The device in accordance with  claim 1 , wherein a core of said rotor has an oval design.  
     
     
         9 . The device in accordance with  claim 1 , wherein said drum and said rotor are arranged to form a ring-shaped gap between a core of said rotor and an interior wall of said drum.  
     
     
         10 . The device in accordance with  claim 9 , wherein said ring-shaped gap has a minimum width of no more than about 500 mm.  
     
     
         11 . The device in accordance with  claim 9 , wherein said ring-shaped gap has a substantially constant width.  
     
     
         12 . The device in accordance with  claim 1 , further comprising entraining rails coupled to an exterior of said rotor.  
     
     
         13 . The device in accordance with  claim 12 , wherein said entraining rails are structured to axially extend at least about 200 mm along said exterior of said rotor.  
     
     
         14 . The device in accordance with  claim 12 , wherein said entraining rails are structured to radially extend no more than about 100 mm from said exterior of said rotor.  
     
     
         15 . The device in accordance with  claim 12 , wherein said entraining rails are structured to radially extend no more than about 50 mm from said exterior of said rotor.  
     
     
         16 . The device in accordance with  claim 12 , wherein said entaining rails are structured and arranged with a shape and size so that, when diluting soiled used paper, adhesion of plastic films or tape is prevented.  
     
     
         17 . The device in accordance with  claim 12 , wherein said entraining rails are structured and arranged to be tilted relative an axis of said rotor.  
     
     
         18 . The device in accordance with  claim 1 , further comprising brake rails on an interior of said drum.  
     
     
         19 . The device in accordance with  claim 18 , wherein a radial extension of said brake rails is no more than about 100 mm.  
     
     
         20 . The device in accordance with  claim 18 , wherein a radial extension of said brake rails is no more than about 50 mm.  
     
     
         21 . The device in accordance with  claim 18 , wherein said brake rails are are structured and arranged with a shape and size so that, when used for diluting soiled used paper, adhesion or spinning of plastic films or tape is prevented.  
     
     
         22 . The device in accordance with  claim 18 , wherein said brake rails are arranged obliquely to an axial direction.  
     
     
         23 . The device in accordance with  claim 1 , wherein said drum and said rotor are arranged to form a gap having a minimum width of at least about 30 mm.  
     
     
         24 . The device in accordance with  claim 23 , wherein said gap has a minimum width of at least about 100 mm.  
     
     
         25 . The device in accordance with  claim 1 , wherein a ring-shaped gap is formed between a core of said rotor and an interior wall of said drum, and said device further comprises feed points structured and arranged to feed diluting water into said ring-shaped gap, 
 wherein said feed points are located in a lower section of said drum.    
     
     
         26 . The device in accordance with  claim 25 , wherein said feed points are located in a lowermost one-third of said drum.  
     
     
         27 . The device in accordance with  claim 1 , further comprising a ring-shaped surface which extends below a lowermost edge of said drum and which is structured and arranged to form a discharge opening.  
     
     
         28 . The device in accordance with  claim 27 , wherein said ring-shaped surface comprises a slide ring, and a magnitude of said discharge opening is variable by axially moving said slide ring.  
     
     
         29 . The device in accordance with  claim 27 , wherein a magnitude of said discharge opening is at least one of enlargable and reduceable by respectively lifting and lowering said drum.  
     
     
         30 . The device in accordance with  claim 1 , wherein a top of said rotor is structured and arranged to be supported and driven.  
     
     
         31 . The device in accordance with  claim 30 , wherein said rotor is supported and driven only at said top.  
     
     
         32 . The device in accordance with  claim 1 , wherein said rotor and said drum are arranged to form a ring chamber having a volume in a lowermost one-third which is larger than a volume in either of an uppermost one-third and a middle one-third of said ring chamber.  
     
     
         33 . The device in accordance with  claim 1 , wherein said drum is positioned substantially vertically.  
     
     
         34 . The device in accordance with  claim 1 , wherein said drum comprises circumferential protrusions extending from an interior surface.  
     
     
         35 . The device in accordance with  claim 34 , wherein said drum comprises at least two circumferential protrusions extending from said interior surface, which are axially spaced from each other, and, in a region of said rotor which corresponds to a region between said axially spaced circumferential protrusions, at least one helically arranged entraining rail is formed on said rotor.  
     
     
         36 . The device in accordance with  claim 35 , wherein said helically arranged entraining rail is arranged to form a plurality of threads.  
     
     
         37 . The device in accordance with  claim 1 , wherein a drivable rotor shaft is coupled to said rotor to rotate said rotor.  
     
     
         38 . The device in accordance with  claim 37 , wherein said rotor shaft is coupled to a bottom of said rotor, and a least a portion of said rotor shaft extends into said drum.  
     
     
         39 . The device in accordance with  claim 38 , further comprising mixing wings coupled to said rotor shaft, said mixing wings comprising a diagonal edge on a front side structured and arranged to deflect contaminants.  
     
     
         40 . The device in accordance with  claim 1 , wherein said rotor comprises a cylindrical section and conical section, wherein said conical section is arranged such that, in a direction toward said discharge opening, a gap width between said rotor and said drum increases.  
     
     
         41 . The device in accordance with  claim 40 , wherein said conical section is attached below said cylindrical section.  
     
     
         42 . The device in accordance with  claim 1 , further comprising a water feed pipe extending into an interior of said rotor, and said rotor comprising at least one water discharge hole coupled to said water feed pipe to add water to the fibrous stock between said rotor and said drum.  
     
     
         43 . The device in accordance with  claim 42 , wherein said at least one water discharge hole is arranged in a lower portion of said rotor.  
     
     
         44 . The device in accordance with  claim 43 , wherein said at least one water discharge hole is arranged in a lowermost one-third of said rotor.