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Steam-heated drying cylinder having internal strips for increasing the heat capacity

A drying cylinder and steam technology, applied in the field of cardboard web or cotton paper web, paper web, can solve the problem of movement, etc., achieve the effect of increasing pressure per unit area, quick installation, and cost reduction

Inactive Publication Date: 2012-02-08
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Interference slats may move during operation

Method used

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  • Steam-heated drying cylinder having internal strips for increasing the heat capacity
  • Steam-heated drying cylinder having internal strips for increasing the heat capacity
  • Steam-heated drying cylinder having internal strips for increasing the heat capacity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] figure 1 The steam-heatable drying cylinder 1 according to the invention of a paper machine is shown with a slatted cage 10 installed in its inner space. The interfering slats 2 are arranged axially, that is, parallel to the longitudinal axis of the drying cylinder 1, and are pressed onto the side shell surface 1.1 with four retaining rings 3. The retaining ring 3 is composed of retaining ring section 3.1. In order to generate radial tension on the interfering slat 2, the retaining ring segments are pushed apart from each other by helical springs or cylindrical springs 4. In this example, there is a form-locking connection at each intersection between the retaining ring section 3.1 and the interference slat 2. The retaining rings 3 are arranged equidistantly. It is expedient if the retaining rings are arranged closer in the edge area than in the middle area. For wider paper machines, the slat cage 10 shown can also form a slat cage module. Then a plurality of slat ca...

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PUM

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Abstract

The invention relates to a steam-heatable drying cylinder (1) for drying a material web, in particular a paper, cardboard, or tissue web, comprising an inner chamber having a lateral surface (1.1) and a device for increasing the heat transfer from the inner chamber to the lateral surface (1.1). The device (10) comprises a plurality of interfering strips (2), which are arranged in the circumferential direction, oriented axially and are in contact with the lateral surface (1.1), and at least one retaining ring (3) which has a tension element (4) and extends in the circumferential direction. The retaining ring (3) interacts with the tension element (4) such that a radial tension force of the at least one retaining ring (3) acting on the interfering strips (2) is generated. The interfering strips (2) are U-shaped, the open sides thereof pointing toward the lateral surface (1.1). The invention is characterized in that the at least one retaining ring (3) is interlocked with at least part of the interfering strips (2).

Description

Technical field [0001] The invention relates to a drying cylinder which can be heated by steam, which is used for drying material webs, especially paper webs, cardboard webs or cotton paper webs. The drying cylinder includes an internal space with a side shell surface and a device for improving heat transfer from the internal space to the side shell surface, wherein the device is composed of a plurality of circumferentially arranged, axially oriented and contacting the side shell The interfering strip of the surface and at least one retaining ring extending in the circumferential direction with at least one tensioning element are formed, wherein the at least one retaining ring and the at least one tensioning element interact in the following manner, namely, The radial tension of the at least one retaining ring acting on the interfering slat is generated, and wherein the interfering slat is configured as a U-shaped profile, the open side of the U-shaped profile pointing to the si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F5/02
CPCD21F5/021D21F5/028
Inventor 丹尼尔·容京格尔安斯加尔·米勒米夏埃尔·洛尔曼埃里希·维勒霍尔格·布伦纳
Owner VOITH PATENT GMBH