Jet device
AssigneeVoith Sulzer Papiermaschinen GmbH
InventorsKarlheinz Straub, Wolfgang Schneider, Hans-Peter Sollinger, Jurgen Banning, Markus Oechsle
Life of this patent
Estimating the term…
Abstract
The invention proposes a jet device for a machine for producing a material web, in particular a paper or board web, having a nozzle device for dispensing a jet of liquid which is under pressure and is directed onto the material web and/or a transport belt guiding the material web. A changeover device by which the pressure with which the medium impinges on the transport belt or the material web, respectively, can be set.
Claims14
A papermaking machine in combination with a jet device, the papermaking machine serving to produce a web of paper and for moving that web of paper on a transport belt past a plurality of dryers and the jet device, the jet device comprising:
- a nozzle device for dispensing a liquid jet under pressure and for directing the jet onto the web and/or the transport belt which guides the web past the jet device;
- the web of paper requiring at times to be cut to form a tail and the transport belt requiring at times to be cleansed of debris which has adhered thereto;
- a changeover device connected with the nozzle device and selectively operable as either a tail cutter or as a transport belt cleansing device and further operable for setting the pressure at which the nozzle device sprays a liquid jet on the web of paper or the transport belt being moved past the liquid jet being sprayed by the jet device, the papermaking machine including solely the nozzle device to selectively serve as with the tail cutter or the transport belt cleansing device and lacking separate instrumentalities for cleansing the transport belt and for cutting the paper tail.
A jet device in a machine for producing a web of material and for moving that web of material on a transport belt past the jet device, the jet device comprising:
- a nozzle device for dispensing a liquid jet under pressure and for directing the jet onto the material web and/or the transport belt which guides the material web past the jet device;
- a changeover device connected with the nozzle device and selectively operable for setting the pressure at which the nozzle device sprays a liquid jet on the material web or the transport belt being moved past the liquid jet being sprayed by the jet device,
- wherein the liquid medium is supplied to the liquid jet through at least one supply line and the changeover device acts on the at least one supply line for selectively adjusting the liquid pressure to a first pressure range suitable for cutting a tail and selectively to a second, different pressure range suitable for cleansing the transport belt.
A jet device in a machine for producing a web of material and for moving that web of material on a transport belt past the jet device, the jet device comprising:
- a nozzle device for dispensing a liquid jet under pressure and for directing the jet onto the material web and/or the transport belt which guides the material web past the jet device;
- a changeover device connected with the nozzle device and selectively operable for setting the pressure at which the nozzle device sprays a liquid jet on the material web or the transport belt being moved past the liquid jet being sprayed by the jet device,
- wherein the nozzle device includes at least two individual nozzles for spraying a liquid jet at the web or the transport belt at different pressure levels, including at a first pressure level range suitable for cutting a tail and at a second, different pressure level range suitable for cleansing the transport belt.
Dependencies are inferred from the claim text.