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Fibrous web processing apparatus with a metal belt loop

A technology of processing equipment and fiber web, which is applied in the field of fiber web processing equipment, can solve problems such as fiber web rupture and metal belt damage, and achieve the effect of improving safety

Inactive Publication Date: 2009-08-26
METSO PAPER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The use of such equipment in conditions where the metal strip is moving rapidly and the temperature may be relatively high (for example in the range of 150 to 400°C) presents various safety risks under normal operating conditions and especially under fault conditions, e.g. fiber Breakage of the web or even damage to the metal strip in extreme cases

Method used

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  • Fibrous web processing apparatus with a metal belt loop

Examples

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Embodiment Construction

[0009] figure 1 , the reference number 2 designates a metal belt calender comprising a calender belt 3 rotating around a guide roll 4, and on the outside of the calender belt is a backing roll 6, preferably a heated roll , whereby a web processing zone is formed between the calendering belt and the back pressure member, through which zone the web to be calendered is guided. Furthermore, on the inside of the metal belt loop 3 are press rolls 5 serving as pressing means, which press the metal belt against rolls 6 so as to create a higher pressure in the calender zone of the nip. These guide rollers, or at least some of them, may be arranged to be movable to adjust the tension of the belt 3 as required. Reference numeral 7 denotes a body portion of the metal belt calender. The technical solution according to the invention consists of a protective structure separate from the metal belt calender, in the direction of travel of the fiber web (in figure 1 with figure 2 Viewed fro...

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PUM

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Abstract

The invention relates to a fibrous web processing apparatus (2) with a metal belt loop, the processing apparatus comprising a metal belt (3) arranged to rotate around at least one guide means (4), and outside the metal belt loop a counter-element (6) forming an extended web processing zone with the metal belt, through which processing zone the fibrous web to be processed is led. Around the processing apparatus (2) is provided a separate protective construction comprising a body part provided with a protective casing (1), above the processing apparatus, extending as seen in the direction of travel of the fibrous web brought to the processing apparatus from the front end area of the processing apparatus to its rear end area. At the opposite side ends (tending side and drive side) of the processing apparatus are side casings, at least one of which is made into a door construction (8) that may be opened.

Description

technical field [0001] The invention relates to a fiber web processing plant with a metal belt loop, said processing plant comprising: a metal belt arranged to rotate around at least one guide means; and a back pressure element located on the outside of said metal belt loop, Together with the metal belt an extended fibrous web processing zone is formed, through which the fibrous web to be processed is guided. Background technique [0002] Such fiber web processing equipment with metal belt loops may be, for example, metal belt calenders, drying equipment, presses, Coating equipment, sizing equipment, printing equipment, etc. It is conceivable that the apparatus can replace eg soft calenders, multi-nip calenders, paper machine calenders, shoe calenders or Yankee cylinders. [0003] The use of such equipment in conditions where the metal strip is moving rapidly and the temperature may be relatively high (for example in the range of 150 to 400°C) presents various safety risks...

Claims

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Application Information

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IPC IPC(8): D21G5/00D21G1/00
CPCD21G5/005D21G1/006
Inventor 米卡·维尔扬马马尔库·基尔韦斯迈基
Owner METSO PAPER INC
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