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Drying device

A drying device and drying technology, applied in progressive dryers, dryers, dryers, etc., can solve problems such as laboriousness and fiber failure.

Inactive Publication Date: 2008-05-28
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The transfer of the fiber web is trouble-prone and laborious

Method used

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  • Drying device

Examples

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Embodiment Construction

[0030] The drying device has a plurality of drying units, in which the fibrous web 1 is supported by a drying wire 2 of the respective drying unit and alternately meanders through heated drying cylinders 3 and suctioned guide rollers 4 .

[0031] The drying cylinder 3 is located in the upper row of the drying unit and is located on the lower side of the fiber web 1 , and the guide roller 4 is located in the lower row of the drying unit and is located on the upper side of the fiber web 1 . The air-permeable drying wire 2 presses the fibrous web 1 against the hot outer surface of the drying cylinder 3 and facilitates the heat transfer to the fibrous web 1 .

[0032] The drying unit comprises a plurality of transfer units 11 , 12 arranged in series, each of which has a strip sensor 7 and a separating device 8 immediately behind it at its start.

[0033] For the transfer, the narrow transfer strip of the fibrous web 1 passes through the drying device on the guide side. After a su...

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Abstract

Successive transfer sections (11, 12) include a strip sensor (7), a transfer aid (6) and a separator (8). The separator directly follows the strip sensor. Strip sensors, transfer aids and separators are connected to a controller (10). On detecting a fault in the transfer operation, the strip sensor of a transfer unit (11, 12) activates the separator of the previous transfer unit, via the controller. When the transfer strip is detected, the sensor deactivates the transfer aid device of the previous unit, via the controller. Once the transfer strip has been detected, the sensor activates the transfer aid of the current transfer unit. The sensor is optical, detects pressure or heat. The transfer aids are air-blowing nozzles or transfer belts. The separator unit is a blast pipe. Several drying sections are so equipped. The fibrous web (1) is led into the drying sections supported on a drying sieve belt (2). It meanders over the heated drying cylinders (3) and guide rollers (4). Each transfer unit (11, 12) comprises a drying section. Alternatively, one drying section comprises several transfer units. An independent claim IS INCLUDED FOR the corresponding method of carrying the transfer strip of a web through the drying section.

Description

field of invention [0001] The invention relates to a drying device for a machine for preparing and / or conditioning paper webs, cardboard webs, textile webs or other fibrous webs, in which device the fibrous webs for drying are heated drying drums and guide rolls Conveying, wherein the drying device has a plurality of strip sensors for detecting the transfer strip of the fibrous web, a plurality of transfer auxiliary devices for guiding the transfer strip and a plurality of separation devices for separating the transfer strip. [0002] The invention also relates to a method for transferring a transfer strip of a paper web, cardboard web, textile web or other fibrous web through a drying device of a machine for preparing and / or conditioning a fibrous web, in which device the The fibrous web is transported via heated drying cylinders and guide rolls, the drying unit can have several strip sensors for detecting the transfer strip and several transfer aids for guiding the transfer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B13/12
CPCD21F7/04D21G9/0063
Inventor 彼得·卡尔沃纳·戈贝尔
Owner VOITH PATENT GMBH
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