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Roll with adjustable shell, apparatus and method

A technology of equipment and hollow shells, which is applied in the field of roller and belt rotating equipment, can solve the problems of difficult manufacture and high cost of peripheral drilled hot rollers

Inactive Publication Date: 2015-02-11
VALMET TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Increased cost when using peripherally drilled thermal rolls, and peripherally drilled thermal rolls are difficult to manufacture

Method used

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  • Roll with adjustable shell, apparatus and method
  • Roll with adjustable shell, apparatus and method
  • Roll with adjustable shell, apparatus and method

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Embodiment Construction

[0032] In the following description, the same numerals denote the same elements. It should be understood that the drawings shown are not entirely to scale and that they mainly serve the purpose of illustrating embodiments of the invention.

[0033] figure 1 Shown is a partial side sectional view of a floating offset adjustable roller 1 comprising a fixed shaft 2 and a rotatable shell 3 . The end 2.1 of the shaft 2 is supported to a structure located outside the roller 1 in a manner that allows the shaft 2 and the shell 3 to assume a bend 5 shape. The shell end 3.1 of the shell 3 is arranged on an end bearing 4 fitted on the shaft end 2.1. The shell 3 comprises a shell surface 3.2 which can be adjusted to a desired curvature. The offset compensating movement 3' of the roll 1 can be transferred via the shell surface 3.2 to another fibrous web handling member, such as a nip roll 12 or a metal belt 11. The shell 3 bends under loads caused eg by rolls, belts or fibrous webs, bu...

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PUM

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Abstract

A roll (1 ) comprising a stationary shaft (2) and a hollow shell (3) rotatably fitted onto the shaft, and longitudal sealings (8) and end sealings (9,10) are arranged between the shaft and the shell for forming a first pressure chamber (6) and a second pressure chamber (7), and the roll (1 ) is loadable by conveying a pressure medium into the first pressure chamber (6) and / or into the second pressure chamber (7) for adjusting deflection of the shell (3). The amount and the direction of the total load caused to the shell (3) from inside by the pressure medium is defined by the difference of the loads caused by the pressure in the first pressure chamber (6) and the pressure in the second pressure chamber (7), and the pressure medium is steam, and the roll (1 ) is heatable by conveying that steam into at least one of said pressure chambers (6,7). An apparatus (20,30,31,33) comprising a deflection compensated roll (1 ) according to any embodiment of the invention. A press section of a fiber web machine. A drying section of a fiber web machine. A method for using a roll (1 ).

Description

technical field [0001] The invention relates to a roll and belt rotating device with adjustable housings used in fiber web machines. The invention relates in particular, though not exclusively, to a deflection compensated roll for heat transfer to a metal belt and / or paper, usable in the press and dryer sections of a paper machine, and It relates to a method of using offset compensating rollers. Background technique [0002] In offset compensating floating rolls, a shell is rotatably arranged on top of a fixed shaft, and the shell is loaded by delivering pressurized oil into a pressure chamber between the shaft and the shell to correct the offset of the shell of the roll. The oil used to pressurize the rollers is used to heat the dancer rollers. Offset-compensating dancer rolls are produced, for example, under the trademarks SymRoll, EcoNip and S-Roll. Patent document publication number US 5244448 describes a offset-compensating dancer roller. Dancer rolls are typically ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21G1/02D21G1/00
CPCD21G1/0066D21G1/026D21G1/022F16C13/003
Inventor 托米·科罗莱宁
Owner VALMET TECH OY