Device for dewatering a fibrous material web
AssigneeVoith Paper Patent GmbH
InventorKlaus Dölle
Life of this patent
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Abstract
Device and process for dewatering a fibrous material web by expelling water via gas pressure. The dewatering device includes at least four rolls arranged to radially limit at least one pressure chamber and sealing units arranged to axially limit the at least one pressure chamber. Adjustment devices are arranged to at least partially individually axially adjust positions of the at least four rolls and the sealing units. A pressure gas is introducible into and the fibrous material web is guidable through the at least one pressure chamber.
Claims30
A device for dewatering a fibrous material web by expelling water via gas pressure comprising:
- at least four rolls arranged to radially limit at least one pressure chamber;
- sealing units arranged to axially limit said at least one pressure chamber;
- and
- adjustment devices arranged to at least partially individually axially adjust positions of said at least four rolls and said sealing units,
- wherein a pressure gas is introducible into and the fibrous material web is guidable through said at least one pressure chamber.
A process for dewatering a fibrous material web in an apparatus that includes at least four rolls arranged to radially limit at least one pressure chamber, sealing units arranged to axially limit the at least one pressure chamber, and adjustment devices coupled to the at least four rolls and the sealing units, said process comprising:
- introducing gas into the at least one pressure chamber
- axially adjusting the positions of at least one of the at least four rolls and the sealing units with the adjustment devices, whereby one of sealing contact is made and a small gap is formed between the sealing units and ends of the at least four rolls to provide maintain sufficient pressure in the pressure chamber;
- and
- passing the web through the at least one pressure chamber, whereby water in the web is expelled by the gas pressure.
Dependencies are inferred from the claim text.