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Sleeve roll for wire section of fiber web machine

A fiber web machine and bushing technology, applied in the wet end of paper machine, paper machine, press part, etc.

Active Publication Date: 2021-11-26
VALMET TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This increases the overall weight of the bushing roll, but the heating problem remains
Furthermore, the known bushing rolls must be aligned in a specific position

Method used

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  • Sleeve roll for wire section of fiber web machine
  • Sleeve roll for wire section of fiber web machine
  • Sleeve roll for wire section of fiber web machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] In the illustrated embodiment, the forming section comprises a first wire ring 10 and a second wire ring 11 ( figure 1 ). The first wire loop 10 surrounds the forming roll 12 and the second wire loop 11 surrounds the breast roll 13 . The direction of travel of the first wire ring 10 is indicated by arrow 14 and the direction of travel of the second wire ring 11 is indicated by arrow 15 . The first wire ring 10 and the second wire ring 11 form a converging gap 16 such that both the wire ring 10 and the wire ring 11 converge on the area of ​​the forming roll 12 . The forming section also comprises a headbox 17 for feeding the stock suspension to the gap 16 between the wire rings 10 and 11 . After the forming roll 12 there are three suction boxes 18, 19 and 20 for water removal. Next there is the lining roller 21 according to the invention. Both the wire ring 10 and the wire ring 11 run over a bushing roll 21 equipped with curved forming elements 22 for dewatering. Th...

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PUM

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Abstract

The invention relates to a sleeve roll for a wire section of a fiber web machine. The sleeve roll (21) includes a stationary axle (28) and two circular roll heads (29) supported on the stationary axle (28) and arranged to rotate. The sleeve roll (21) further includes a belt loop (30) arranged around the stationary axle (28) and tensioned between the roll heads (29). There is also a curvilinear forming element (22) arranged between the stationary axle (28) and the belt loop (30). Said forming element (22) is in contact with the belt loop (30) in order to form rising pressure for water removal. Before the forming element (22) in the rotating direction of the belt loop (30) there is a lubricated sliding surface (31) for fabric support and lubrication of the forming element (22).

Description

technical field [0001] The invention relates to a sleeve roll for the wire section of a fiber web machine, said sleeve roll comprising: a fixed shaft; two circular roll heads, said roll heads being supported on said fixed shaft and arranged to rotate; a belt loop arranged around the fixed shaft and tensioned between said roller heads; and a curvilinear forming element arranged at Between the fixed shaft and the belt loop, wherein the shaping element is in contact with the belt loop to create a rising pressure for water removal. Background technique [0002] European Patent No. 2350385 discloses a forming section of a fiber web machine. There is a bushing roller with a belt loop arranged to rotate about a fixed shaft. Inside the lining roll there are curved profiled elements which form the dewatering zone. The increased pressure pushes water out of the fibrous web formed by the fibrous web machine, such as a paper, board, pulp or tissue machine. [0003] The known forming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F3/08
CPCD21F3/08D21F1/40D21F9/003D21F7/005
Inventor 维莱·埃罗宁塞波·库皮艾宁A·米蒂宁T·西洛玛约尔马·斯内尔曼尤哈·温帕里塔内尔·于勒宁
Owner VALMET TECH OY