Apparatus for drying a paper web

A technology of drying and drying drums, which is applied in the direction of dryers, papermaking, paper machines, etc., and can solve the problems of not having enough space for use
CN1542221AInactive Publication Date: 2004-11-03ANDRITZ AG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANDRITZ AG
Publication Date
2004-11-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

A device for drying a paper web has a drying drum mounted at least partially inside a housing, whereby the cylinder wall of the drying drum is provided with a large number of apertures or openings so that hot air can flow through the cylinder wall, a heating device to generate hot air, a feed device to apply the hot air to the paper web, and a device to carry off the air containing moisture. In order to permit a compact design, the housing surrounds at least one hood which partly encloses a cylinder wall of the drying drum with the heating device being located inside the hood. Both the feed device and the heating device should be located preferably inside the hood.
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Description

technical field

[0001] The invention relates to a device for drying a paper web, which device has a drying drum mounted at least partly inside the housing, whereby the cylindrical wall of the drying drum is provided with a large number of holes or openings so that hot air can flow through the cylindrical wall; it also includes heating means for generating hot air, supply means for supplying hot air to the web, and means for taking away air containing moisture. Background technique

[0002] According to the prior art, there are housings which serve to evenly distribute the flow of hot air, while the circulating air system with fans and heating means such as burners is located outside the housing. Since this type of through air dryer requires only moderate pressure but high air flow, only very large air ducts are considered. However, especially in the renovation of existing installations, but also in new installations, there is often not enough space available for this. Con...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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