Method for drying a fibrous web in a drying device, and drying device

A technology for drying equipment and fiber materials, which is applied in the field of drying fiber webs and drying equipment in drying equipment, can solve the problem of high cost of fiber webs, and achieve the effect of small expenses

Active Publication Date: 2014-02-19
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A further disadvantage of the horizontal guidance is that, in the case of fibrous web stubs, the fibrous web can only be separated from the drying gap with difficulty and with great expense.

Method used

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  • Method for drying a fibrous web in a drying device, and drying device
  • Method for drying a fibrous web in a drying device, and drying device
  • Method for drying a fibrous web in a drying device, and drying device

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Embodiment Construction

[0069] figure 1 The basic structure and basic functions of the drying plant 1 designed according to the invention are shown very schematically. In order to illustrate the individual direction indications, a coordinate system is established thereon. The X direction corresponds to the basic direction of travel of the fibrous web F through the drying device 1 . It coincides with the longitudinal direction of the drying device 1 and is therefore also referred to as machine direction MD. The Y direction describes the direction perpendicular to the machine direction MD, ie the width direction of the device 1 and is called the machine cross direction CD. The Z direction corresponds to the height direction, ie the extension along the vertical direction.

[0070]According to the invention, the drying device 1 is a vertical drying device according to the impact principle. The fibrous web F is guided through the drying device by multiple deflections, that is to say alternating multip...

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Abstract

The invention relates to a method for drying a fibrous web (F) in a drying device (1) and to a corresponding drying device (1), in which method the fibrous web (F) is guided in an open draw with multiple deflection through the drying device (1) through a plurality of intermediate drying spaces (3.1 - 3.n) which are arranged parallel to one another and describe web-guiding path sections, and is loaded on both sides with a drying medium, in particular hot air, for thermal transfer. The invention is characterized in that the fibrous web (F) is guided through the drying device (1) alternately in the vertical direction in and counter to the direction of gravity and vice versa.

Description

technical field [0001] The invention relates to a method for drying a fibrous web in a drying plant, wherein the fibrous web is guided through multiple drying gaps arranged parallel to one another and delineating web guide path sections by means of multiple deflections The bottom is freely drawn through the drying plant, and the drying medium is applied on both sides, especially hot air for heat transfer. Furthermore, the invention relates to a drying device. Background technique [0002] Drying plants of the type according to the invention are previously known from the prior art, which operate on the impingement principle with hot air and are of various designs in the form of horizontal air drying plants. In this drying device, the fibrous web to be dried is guided through the drying device in horizontally oriented and vertically superposed drying gaps. The fibrous web runs horizontally from the inlet side to the outlet side of the drying plant successively through the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F5/18F26B13/10
CPCD21F5/18F26B13/10D21F5/188D21H25/04
Inventor E.埃勒尼尔多达席尔瓦G.罗马诺A.佩科拉雷
Owner VOITH PATENT GMBH
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