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Method and device for removing broke in plant for drying of web-formed material

A technology for drying equipment and drying sheets, which is applied in the dryer section, textiles and papermaking, papermaking and other directions, and can solve problems such as difficulty in operation

Inactive Publication Date: 2006-10-18
ANDRITZ TECH & ASSET MANAGEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is difficult in view of its width and its insufficient strength, since the sheet is practically accessible only from its edge portions
The job can also be annoying because the sheet is hot and humid

Method used

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  • Method and device for removing broke in plant for drying of web-formed material
  • Method and device for removing broke in plant for drying of web-formed material
  • Method and device for removing broke in plant for drying of web-formed material

Examples

Experimental program
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Effect test

Embodiment Construction

[0036] figure 1 A part of a drying plant 1 for papermaking pulp is schematically shown. The drying device 1 is enclosed in a housing 2 comprising a wall 2a. This wall 2a is provided with a window 3, whereby the deflection roller 4 of the drying device 1 can be accessed through the opening 3a. At this window 3 , above the deflection roller 4 , there is a pressure roller 5 hingedly suspended from a bracket 6 against the wall 2 a of the housing 2 above this window 3 . By means of a mechanical spring 7 , the pressure roller 5 is in a rest position slightly raised from the deflection roller 4 .

[0037] This pressure roller 5 is fixed to a tubular element 8 connected to the support 6 by means of transverse elements 9 and joints 10 . This tubular element 8 is adapted to cooperate with a rod 11 or similar to extend the lever, thus increasing the force with which the press roll 5 can be pressed against the deflection roll 4 and the pulp sheet 12 lying on the deflection roll.

[00...

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PUM

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Abstract

Method and apparatus for cleaning in an apparatus (1) for drying sheet-shaped material (12) enclosed in a housing (2) in the event of a sheet break, the apparatus comprising blow boxes arranged in a plurality of drying stations. The sheet material (12) changes its machine direction between the drying decks as the sheet material (12) passes the turning rollers (4), which run freely during normal operation, but which are Driven eg during the passage of the sheet, the sheet material ( 12 ) is pressed against the deflection rollers ( 4 ) only by the tension in the sheet. An opening (3a) is made in the wall (2a) of the housing (2) so as to contact at least one deflection roller (4), applying a pressure roller or roller (5), against which the sheet material (12) is pressed. on roller (4). A drive system running the diverting rollers (4) at low speed feeds the sheet material (12) forward, the sheet material (12) is fed out of the housing (2) through the opening (3a).

Description

technical field [0001] The invention relates to a method of cleaning in an apparatus for drying sheet-shaped material, preferably a pulp or paper web, after a sheet break or the like, comprising drying stations arranged in a plurality of Hair box. The sheet material is floating in the drying platform above lower blow boxes which blow heat treatment air on their upper sides towards the sheet material in order to dry the material. Between these drying platforms there are deflection rollers against which the sheet material is pressed only by the tension in the sheet. The sheet material is passed through the drying apparatus by means of a pair of drive rollers at the exit. During normal operation, the deflection rollers arranged between the drying decks run freely, but these are provided with drives, which are used, for example, when passing through the plant. [0002] The invention also relates to a device for carrying out the method. Background technique [0003] Sheet-sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F5/18D21F7/04D21G9/00
CPCD21G9/0063D21F7/04
Inventor T·弗兰松S·U·I·赖德尔M·奈伦
Owner ANDRITZ TECH & ASSET MANAGEMENT