Device for solidifying a material web

Abstract

The invention relates to a device for solidifying a material web (F) formed of fibers and/or filaments, said device comprising a screen belt (S) carrying the material web (F), a nozzle beam (D) arranged above the screen belt (S) for subjecting the material web (F) to a pressurized fluid with a plurality of fluid jets (W) arranged in at least one row, and a suction device which is disposed below the screen belt (S), interacts with the nozzle beam (D) and has a suction gap (A). The invention is characterized in that the fluid jets (W) hit the material web (F) in the surface area of the suction gap (A). According to the invention, the fluid application (W) is carried out in the rear section of the suction gap (A) when seen in the conveying direction of the material web (F).

1 . A device for solidifying a material web formed of fibers and/or filaments, said device comprising a screen belt carrying the material web, a nozzle beam arranged above the screen belt for subjecting the material web to a pressurized fluid in the form of a plurality of fluid jets arranged in at least one row, and a suction device comprising a suction gap, said suction device being disposed below the screen belt and interacting with the nozzle beam, said fluid jets hitting the material web in the surface area of the suction gap,
 characterized in that the application of fluid (W) is performed in the rear region of the suction gap (A) as viewed in the conveying direction of the material web (F). 
 
     
     
         2 . The device according to  claim 1 ,
 characterized in that the application of fluid (W) is performed in the rear quarter of the suction gap (A).   
     
     
         3 . The device according to  claim 1 ,
 characterized in that the suction device (A) is formed as an open-topped chamber connected to a suction air generator (SV), the top side of said chamber being covered by the screen belt (S) and said chamber being delimited in the transport direction of the material web (F) by a respective bar (L 1 ,L 2 ).   
     
     
         4 . The device according to  claim 1 ,
 characterized in that, above the material web (F) carried by the screen belt (S), a blowing device is assigned to the suction device for blowing air onto the surface of the material web (F).   
     
     
         5 . The device according to  claim 4 ,
 characterized in that   said blowing device is provided with air conducting elements.   
     
     
         6 . The device according to  claim 5 ,
 characterized in that   said air conducting elements of the blowing device are adjustable.   
     
     
         7 . The device according to  claim 4 ,
 characterized in that, by the blowing device, the pile of the material web can be subjected to blown air in the conveying direction with varying strength.   
     
     
         8 . The device according to  claim 2 ,
 characterized in that the suction device (A) is formed as an open-topped chamber connected to a suction air generator (SV), the top side of said chamber being covered by the screen belt (S) and said chamber being delimited in the transport direction of the material web (F) by a respective bar (L 1 ,L 2 ).   
     
     
         9 . The device according to  claim 8 ,
 characterized in that, above the material web (F) carried by the screen belt (S), a blowing device is assigned to the suction device for blowing air onto the surface of the material web (F).   
     
     
         10 . The device according to  claim 9 ,
 characterized in that   said blowing device is provided with air conducting elements.   
     
     
         11 . The device according to  claim 10 ,
 characterized in that   said air conducting elements of the blowing device are adjustable.   
     
     
         12 . The device according to  claim 9 ,
 characterized in that, by the blowing device, the pile of the material web can be subjected to blown air in the conveying direction with varying strength.   
     
     
         13 . The device according to  claim 2 ,
 characterized in that, above the material web (F) carried by the screen belt (S), a blowing device is assigned to the suction device for blowing air onto the surface of the material web (F).   
     
     
         14 . The device according to  claim 13 ,
 characterized in that   said blowing device is provided with air conducting elements.   
     
     
         15 . The device according to  claim 14 ,
 characterized in that   said air conducting elements of the blowing device are adjustable.   
     
     
         16 . The device according to  claim 13 ,
 characterized in that, by the blowing device, the pile of the material web can be subjected to blown air in the conveying direction with varying strength.   
     
     
         17 . The device according to  claim 3 ,
 characterized in that, above the material web (F) carried by the screen belt (S), a blowing device is assigned to the suction device for blowing air onto the surface of the material web (F).   
     
     
         18 . The device according to  claim 17 ,
 characterized in that   said blowing device is provided with air conducting elements.   
     
     
         19 . The device according to  claim 18 ,
 characterized in that   said air conducting elements of the blowing device are adjustable.   
     
     
         20 . The device according to  claim 17 ,
 characterized in that, by the blowing device, the pile of the material web can be subjected to blown air in the conveying direction with varying strength.