Device and method for producing and/or finishing a fibrous material

Abstract

The invention relates to a device for producing and/or transforming a web of fibrous material, in particular a paper cardboard web. Said device includes a heatable and rotatable cylinder, in particular a dry cylinder of a dry part, including a cylinder sleeve which can be impinged upon from the inside by a heating fluid. At least one channel is provided in order to guide the heating fluid such that the heating capacity can be improved and the production below the external surface of the cylinder cover can be simplified. The dry cylinder is at least partially modular.

1 . A device for at least one of producing and finishing a web of fibrous material comprising: 
 a heatable and rotatable drying cylinder of a drying section, said drying cylinder including a first cylinder shell configured for being loaded from an inside with a heating fluid, said first cylinder shell including an outer surface below which is formed at least one channel for guiding through said heating fluid, said drying cylinder having an at least partially modular construction.    
   
   
       2 . The device as claimed in  claim 1 , wherein said drying cylinder includes an inner cylinder shell, said first cylinder shell being an outer cylinder shell, said inner cylinder shell being spaced apart from said outer cylinder shell and being arranged within said outer cylinder shell so as to form said at least one channel.  
   
   
       3 . The device as claimed in  claim 2 , wherein said outer cylinder shell is supported on said inner cylinder shell.  
   
   
       4 . The device as claimed in  claim 2 , wherein said drying cylinder includes at least one module which includes at least one of an open profile and a closed profile.  
   
   
       5 . The device as claimed in  claim 2 , wherein said drying cylinder includes at least one module which includes a plurality of segments firstly of at least one of said inner cylinder shell and said outer cylinder shell and secondly of at least one connecting element.  
   
   
       6 . The device as claimed in  claim 2 , wherein said drying cylinder includes a plurality of modules in at least one of an axial direction and a circumferential direction.  
   
   
       7 . The device as claimed in  claim 2 , wherein said drying cylinder includes at least one module which includes a plurality of cylinder rings having a cross section of said drying cylinder.  
   
   
       8 . The device as claimed in  claim 2 , wherein said drying cylinder includes at least one module which includes a plurality of annular segments having a partial cross section of said drying cylinder.  
   
   
       9 . The device as claimed in  claim 2 , wherein said drying cylinder includes one of a plurality of module rings and a plurality of module part rings, said at least one channel including a plurality of channels, said inner cylinder shell including a carrying tube onto which are coupled, using at least one screw, one of said plurality of module rings and said plurality of module part rings which one of form and have said plurality of channels.  
   
   
       10 . The device as claimed in  claim 2 , wherein said drying cylinder includes at least one module which at the same time forms a functional element of the drying cylinder.  
   
   
       11 . The device as claimed in  claim 10 , wherein said at least one module forms at least one guide channel for said heating fluid.  
   
   
       12 . The device as claimed in  claim 2 , wherein said drying cylinder includes a plurality of modules which are connected to one another by one of at least one weld, at least one solder, at least one screw, at least one form-fitting connection, and at least one force-transmitting connection.  
   
   
       13 . The device as claimed in  claim 2 , wherein said outer cylinder shell is connected to said inner cylinder shell using a plurality of connecting elements.  
   
   
       14 . The device as claimed in  claim 13 , wherein said plurality of connecting elements includes at least one of a plurality of radial webs, a plurality of rods, a plurality of pins, a plurality of rivets, a plurality of bolts, and a plurality of screws.  
   
   
       15 . The device as claimed in  claim 14 , wherein said plurality of radial webs at least partially has a plurality of passage openings for said heating fluid.  
   
   
       16 . The device as claimed in  claim 13 , wherein said plurality of connecting elements one of extends and is arranged axially in at least one of a circumferential direction and a direction which lies between said plurality of connecting elements.  
   
   
       17 . The device as claimed in  claim 13 , wherein said plurality of connecting elements between said outer cylinder shell and said inner cylinder shell includes a plurality of web metal sheets.  
   
   
       18 . The device as claimed in  claim 17 , wherein said outer cylinder shell includes a plurality of cover plates.  
   
   
       19 . The device as claimed in  claim 18 , wherein said plurality of cover plates are combined with said plurality of web metal sheets to form a plurality of profiles.  
   
   
       20 . The device as claimed in  claim 19 , wherein said plurality of profiles includes one of a plurality of U-shaped profiles and a plurality of T-shaped profiles.  
   
   
       21 . The device as claimed in  claim 13 , wherein said plurality of connecting elements are manufactured one of by removing material, by primary forming technology, and by forming technology.  
   
   
       22 . The device as claimed in  claim 2 , wherein said outer cylinder shell includes an inner side including a plurality of elevations.  
   
   
       23 . The device as claimed in  claim 22 , wherein said inner side of said outer cylinder shell includes at least one of a plurality of ribs, a plurality of lugs, and one of a grid and a honeycomb structure.  
   
   
       24 . The device as claimed in  claim 22 , wherein said plurality of elevations at least one of extends in a cylinder longitudinal direction and is in a shape of a plurality of helical lines.  
   
   
       25 . The device as claimed in  claim 22 , wherein said plurality of elevations are one of milled, drawn, pressed, rolled, and cast.  
   
   
       26 . The device as claimed in  claim 1 , wherein said outer surface of said drying cylinder includes one of a coating and a covering.  
   
   
       27 . The device as claimed in  claim 26 , wherein one of said coating and said covering is configured at least one of for protecting against at least one of corrosion and abrasion and for improving a plurality of surface properties.  
   
   
       28 . The device as claimed in  claim 1 , wherein said drying cylinder includes a thick-walled tube including a plurality of fluid channels.  
   
   
       29 . The device as claimed in  claim 28 , wherein said plurality of fluid channels are made by one of deep-hole drilling and milling.  
   
   
       30 . The device as claimed in  claim 1 , wherein said outer surface of said drying cylinder is turned.  
   
   
       31 . A method for producing a web of fibrous material comprising the steps of: 
 providing a device for at least one of producing and finishing the web of fibrous material, said device including a heatable and rotatable drying cylinder of a drying section, said drying cylinder including a cylinder shell which includes an outer surface below which is formed at least one channel, said drying cylinder having an at least partially modular construction;    loading said cylinder shell from an inside with a heating fluid; and    guiding through said heating fluid using said at least one channel.    
   
   
       32 . The method as claimed in  claim 31 , wherein said drying cylinder includes one of a single drying cylinder and a plurality of drying cylinders.  
   
   
       33 . The method as claimed in  claim 32 , wherein one of said single drying cylinder and said plurality of drying cylinders is combined with at least one conventional drying process.  
   
   
       34 . The method as claimed in  claim 33 , wherein said at least one conventional drying process includes at least one of cylinder drying, a boost dryer process, a Condebelt process, a yankee cylinder, and a HiDryer.