Method and machine for drying a material web with guide rollers
AssigneeVoith Sulzer Papiermaschinen GmbH
InventorGerhard Kotitschke
Life of this patent
Estimating the term…
Abstract
A machine for producing a material web, e.g., a paper or cardboard web, with a dryer section including at least one dryer group having a plurality of dryer cylinders and a plurality of web guide rolls, e.g., suction web guide rolls. At least one web guide roll, and preferably all, may be associated with an external suction box. Further, a jacket of the at least one web guide roll may include a plurality of through openings and at least one groove formed in an outer surface of the jacket. A predetermined number, and preferably all, of the through openings may be coupled with a bottom portion of the at least one groove to enable the external suction box to suction the at least one web guide roll.
Claims30
A machine for producing a material web comprising:
- a dryer section including at least one dryer group having a plurality of dryer cylinders and a plurality of web guide rolls;
- at least one of the plurality of web guide rolls including a jacket;
- an external suction box;
- the jacket including a plurality of through openings and at least one groove formed in an outer surface of the jacket;
- and
- a predetermined number of the plurality of through openings coupled to the at least one groove and associated with the external suction box.
A process for producing a material web in a web producing machine, the web producing machine including a dryer section including at least one dryer group having a plurality of dryer cylinders and a plurality of web guide rolls, at least one of the plurality of web guide rolls associated with an external suction box and including a jacket having a plurality of through openings and at least one groove formed in an outer surface of the jacket, the process comprising:
- forming at least one groove in an outer surface of the jacket of the web guide roll;
- forming through openings in the at least one groove;
- and
- associating an external suction box with the through openings formed in the at least one groove.
A suction web guide roll positioned in a dryer section of a material web producing machine comprising:
- an elongated hollow jacket;
- the elongated hollow jacket comprising a plurality of through holes;
- at least one groove formed in an outer surface of the jacket, the groove comprising a bottom surface;
- and
- a predetermined number of the plurality of the through holes coupled to the bottom surface;
- and
- an external suction box positioned adjacent the outer surface of the jacket and in communication with the predetermined number of the plurality of through holes.
A process for forming a suction web guide roll comprising:
- forming at least one groove, comprising a bottom surface, in an outer surface of an elongated jacket;
- forming a plurality of through holes in the at least one groove;
- and
- positioning a suction box adjacent the at least one groove.
Dependencies are inferred from the claim text.