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Casting shafts used for roller of fiber web material machine and roller equipped with casting shafts

A fiber web machine and fiber web technology, applied in the direction of shafts and bearings, papermaking, paper machines, etc., can solve the problems of increasing production costs and difficult implementation of casting technology

Active Publication Date: 2017-08-18
VALMET TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the change area is very difficult to implement in terms of casting technology over short lengths
The journals and changing areas must also be turned, which in turn increases production costs

Method used

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  • Casting shafts used for roller of fiber web material machine and roller equipped with casting shafts
  • Casting shafts used for roller of fiber web material machine and roller equipped with casting shafts
  • Casting shafts used for roller of fiber web material machine and roller equipped with casting shafts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] figure 1 A long nip arrangement of a fiber web machine consisting of a shoe roll 10 and its counter roll 14 is shown in principle. The shoe roller is equipped with a non-rotatable pressing shaft 11 and a loadable pressing shoe 12 supported on the pressing shaft 11 . The shoe roller is provided with an elastic belt cover 13 which is arranged around the pressing shaft 11 . The shoe roll together with the counter roll 14 forms between them a long nip through which the fibrous web is guided so that the fibrous web is squeezed. The pressing shoe 12 extends substantially over the entire width of the long jaw. Usually a bow-compensating counter-roller is used which is pressed into the annulus of the shoe-to-shoe belt sleeve. The aforementioned pressing shoe 12 is designed to follow the shape of the roller shell of the counter-roller which compensates for the curvature. figure 1 , the shoe roller 10 is in the lower position, although it is normally in the upper position. f...

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PUM

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Abstract

The invention relates to casting shafts used for a roller of a fiber web material machine. The casting shafts 11, 18 have two end part sections 19, 20 each and a section part 21 between the end part sections 19, 20. Each end part section 19, 20 is provided with a variation area 31. In the variation area, a shaft neck 24 belonging to the shaft changes into a section part 21. The variation area 31 extends to a load area 32 of the shaft 11, 18. The invention also relates to a roller equipped with the casting shafts of the fiber web material machine.

Description

technical field [0001] The invention relates to a cast shaft for a roll of a fiber web machine, which shaft is assigned two end sections and a profile section between these end sections, and each end section is assigned a change area in which the journal assigned to the shaft changes to the profile section. The invention also relates to rolls of a fiber web machine equipped with cast shafts. Background technique [0002] Cast shafts comprising profiled sections are mainly used in rolls of fiber web machines, where the shaft is not rotatable. In this case, the shaft remains stationary, while the roller sleeve supported around said shaft rotates. The general basic shape of the cross-sectional profile of the profile part is I, and in practice the main axis of the I-profile is in the load direction of the roll. Thus, thin I-profiles can also carry large loads, while the total mass of the shaft remains small. In so-called compensating rolls, such as shoe rolls and paired roll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F7/00
CPCD21F3/0218D21G1/006D21G1/0213F16C13/024D21F7/00D21G1/0206F16C13/00
Inventor S·拉明帕拉斯S·瓦乌赫科宁
Owner VALMET TECH OY