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Method and device for transferring a paper web from a supporting woven fabric to another

A paper web and fabric technology, applied in papermaking, paper machine, paper machine wet end, etc., can solve the problems of expensive purchase, operation and maintenance of suction rollers, complex width of adsorption area, high cost, etc., and achieve the cost of purchase and operation Low, reliable web conveying, and the effect of solving wear problems

Active Publication Date: 2010-10-20
VALMET CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, other types of problems arise when using suction rolls: firstly, adjusting the width of the suction area in the suction roll is complex and costly; secondly, the suction rolls are expensive to acquire, operate and maintain
This loss is further enhanced if the felt travels over the suction box cover at higher speeds

Method used

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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  • Method and device for transferring a paper web from a supporting woven fabric to another
  • Method and device for transferring a paper web from a supporting woven fabric to another
  • Method and device for transferring a paper web from a supporting woven fabric to another

Examples

Experimental program
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Effect test

Embodiment Construction

[0030] figure 1Shows a partial view of a paper machine referred to in US patent document 5,888,354 according to the prior art - a press section included in an apparatus for conveying a paper web from one support fabric to another . The pressure section shown in the drawings is composed of a first pressure section 10 and a second pressure section 20 . The first press section is constituted in the figure by the shoe roll 12 and its counter roll 14, the paper web lying between the two felts 32 and 34 passes through the press of the first press section from left to right in the figure. Area. The first felt 32 runs in the form of a loop, in which the shoe roller 12 is located, so that the path of the first felt 32 extends upwards around the shoe roller when the felt guide roller 16 is adjustable. The second felt then travels on counter rolls 14 . On the way between the counter roll 14 and the felt guide roll 16 the paper web W is separated from the first felt 32 by means of the...

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Abstract

The invention provides a device for transferring a paper web from a supporting woven fabric to another. The device comprises a fabric at least on both sides of the paper web; a suction unit for detaching the paper web from a first fabric and adhering the paper web to a second fabric; and a guide roller located on one side of the paper web and the fabric, opposite to the suction unit. The fabric peeled off from the paper web is transferred continuously by the guide roller. The suction unit is composed of a transferring suction box. The transferring suction box is provided with a cover having one or more suction slots or one or more rows of discrete openings transversely extending along the paper web. The transferring suction box is arranged close to the guide roller, so that one row of discrete openings transversely extending along the paper web is located at the following positions relative to the guide roller. Namely, the row of discrete openings is at a position, wherein the surface of the guide roller begins to diverge away from the direction of fabric on the side of the transferring suction box. The at least one slot or the at least one row of openings below the fabric is extending over a width which is greater than the width of the paper web.

Description

technical field [0001] The invention relates to a method and an apparatus for transferring a paper web from one support fabric to another. The method according to the invention and the device according to the invention are thus suitable, for example, for conveying a web from a wire section to a press felt and from the press felt into a dryer section. The method and the device are used in particular when transferring a paper or board web from a first press to a second press of a press in a paper machine, board machine or other corresponding machine favorable. Furthermore, the method according to the invention and the device according to the invention can also be used at all or almost all points in a paper machine where the web is transported from one fabric to another. Background technique [0002] The paper web conveying method and paper web conveying equipment in the prior art will be described in detail below by taking the press section of a paper machine as an example. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F2/00D21F1/48D21F3/04
CPCD21F3/045D21F2/00D21F1/48
Inventor 于尔基·萨韦拉
Owner VALMET CHINA CO LTD
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