WO2015173080A1 - Dispositif de fermeture pour capot de séchage - Google Patents

Dispositif de fermeture pour capot de séchage Download PDF

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Publication number
WO2015173080A1
WO2015173080A1 PCT/EP2015/059892 EP2015059892W WO2015173080A1 WO 2015173080 A1 WO2015173080 A1 WO 2015173080A1 EP 2015059892 W EP2015059892 W EP 2015059892W WO 2015173080 A1 WO2015173080 A1 WO 2015173080A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
locking device
medium
machine
openings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2015/059892
Other languages
German (de)
English (en)
Inventor
Uwe MÖRLEIN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of WO2015173080A1 publication Critical patent/WO2015173080A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper

Definitions

  • the invention relates to a closing panel for a drying hood, which in particular einhaust a dryer section with drying cylinders or a Yankee cylinder of a machine for producing a fibrous web such as a paper, cardboard or tissue web.
  • a closing device which has at least one at least partially flexible sleeve, which in Is arranged portion of the openings and / or passages and which is deformable by introducing a medium and / or displaceable in position.
  • the respective outlet opening of the fibrous web can be closed off from the drying hood in a simple manner.
  • the device is inexpensive, easy and safe to use and so flexible that even when the web breaks no damage to the dryer hood is to be feared, as the locking device yields.
  • the sleeve may have a rigid part and a flexible part, wherein at least the flexible part may consist of a textile which is at least partially permeable to the medium.
  • the flexible part of the sleeve can have openings through which the medium can escape. This makes it possible to supply condensate-prone areas with dry hot air.
  • the rigid part of the cuff may have support elements which serve the stability of the cuff.
  • the at least one sleeve is connected to a supply system, by which it can be acted upon by the medium.
  • the supply system may comprise a device for regulating the flow of the medium.
  • the closing device can extend over at least a portion of the openings and / or passages in the drying hood.
  • the closure device can also extend over the entire width of the machine for producing the fiber web viewed in a cross-machine direction.
  • the sleeve can be placed on a part of the drying hood and in particular on a parapet. However, lateral or hanging variants are conceivable and possible.
  • FIG. 1 shows a highly schematic side view of an embodiment of a closure panel designed according to the invention.
  • the outlet from the dryer section of a machine for producing a fibrous web, in particular a paper or board web is shown in a highly schematic manner.
  • a suspension of water and fibers is firstly dewatered through a forming fabric, after which further water is removed in a press section, thus increasing the dry content.
  • the dry content of the fibrous web 1 is further increased by passing the fibrous web 1 over heated drying cylinders 3 and thereby removing moisture from the fibrous web 1.
  • the drying section 2 is usually enclosed by a drying hood 4 in order to increase the energy efficiency.
  • the fibrous web 1 usually runs after a last drying cylinder 3 via a last guide roller 5 from the dryer section 2 and from the dryer section 2 einhausenden drying hood 4 to a downstream system part, for example, to a coating unit or a winding device.
  • An end hood wall 6 closes off the drying hood 4 and forms in its lower part at the same time a parapet 7 to a no further shown pulper, in which in the case of a web break the fiber web 1 is discharged.
  • An outlet opening 8 formed in the end-face hood wall 6 should be closed as tightly as possible during operation of the machine in order to prevent undesired hot air outlet.
  • lifting diaphragm a large opening is closed by a so-called lifting diaphragm.
  • a Hubschild is moved up and down, for example by means of a Spindelhubstrom.
  • the rigid parts of the lifting system affect the free space, require space and are complex in construction and control.
  • a medium such as air
  • the flexible sleeve 10 is less susceptible to damage due to their flexibility in the passage of foreign bodies or by parts of the fiber web, which can move uncontrollably through the drying hood 4 in web breaks.
  • the sleeve 10 is placed on the parapet 7, which forms part of the front-side hood wall 6.
  • the sleeve 10 has a rigid part 1 1, which provides the necessary stability when placed on the parapet 7, and a flexible part 12 which is oriented to the outlet opening 8 facing.
  • the flexible part 12 of the sleeve 10 hanging down in the unloaded state is oriented and can thereby seal the outlet opening 8.
  • the position of the cuff 10 on the parapet 7 may also be adjustable to position the cuff 10 closer or farther from the fiber web 1.
  • the adjustment of the position of the sleeve 10 can be done manually or by suitable adjustment mechanisms, which are not shown here in detail, since such adjustments are known from the prior art.
  • the flexible part 12 of the sleeve 10 may be either generally air-permeable, for example in the form of a textile, designed, or have openings 14 through which the medium can flow.
  • the sleeve 10 can serve as blow-out for condensate hazardous areas.
  • the wet trailing air of the fiber web 1 can be diluted with dry hot air.
  • the delivery system 13 may include a controller 15 which may be actuated electrically or pneumatically.
  • a controller 15 which may be actuated electrically or pneumatically.
  • further support members 16 may be provided, which are perforated and thus formed permeable and serve to support the sleeve 10.
  • the sleeve 10 may be formed in many ways. It is conceivable and possible, for example, to use a single sleeve 10 over the entire width of the machine or a short sleeve 10, which only closes the opening which is required for the transfer cable. Individual segments across the machine width are possible as well as different control of the individual segments.
  • openings are provided in the drying hood at various positions, some of which must frequently be used for maintenance work.
  • the inventive principle is also suitable for such applications, where such an opening can be closed by means of a closing device 9 designed according to the invention. If access is required, the media flow impinging on the closing device 9 is interrupted, as a result of which the cuff 10 collapses and can be pushed or raised sideways like a curtain.
  • the inventive concept is also applicable to dry hoods of Yankee cylinders. In this case, particular attention must be paid to the temperature resistance of the sleeve 10. It offer, as well as generally for the cuff of the invention, for example Kevlar textiles.

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  • Paper (AREA)

Abstract

Dispositif de fermeture (9) destiné à réaliser la fermeture flexible d'ouvertures et/ou de passages dans le boîtier d'une machine destinée à la fabrication d'une bande de matière fibreuse (1) telle qu'une bande de papier, de carton ou de papier ouaté, notamment d'un capot de séchage (4) destiné à une partie de séchage (2) de ladite machine, le dispositif de fermeture comprenant au moins une garniture (10) au moins partiellement souple qui est disposée dans la zone des ouvertures et/ou passages et dont la forme et/ou la position peut ou peuvent être modifiée(s) par l'introduction d'une substance.
PCT/EP2015/059892 2014-05-12 2015-05-06 Dispositif de fermeture pour capot de séchage Ceased WO2015173080A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014208954 2014-05-12
DE102014208954.9 2014-05-12

Publications (1)

Publication Number Publication Date
WO2015173080A1 true WO2015173080A1 (fr) 2015-11-19

Family

ID=53052863

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/059892 Ceased WO2015173080A1 (fr) 2014-05-12 2015-05-06 Dispositif de fermeture pour capot de séchage

Country Status (1)

Country Link
WO (1) WO2015173080A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB862739A (en) * 1959-07-17 1961-03-15 Sulzer Ag Paper-making machines
DE202007016891U1 (de) * 2007-12-03 2008-02-14 Langbein & Engelbracht Gmbh Trockenhaube
WO2010000938A2 (fr) * 2008-06-30 2010-01-07 Metso Paper, Inc. Paroi terminale d’un sécheur de pâte, sécheur de pâte et procédé de surveillance des parties internes d’un sécheur de pâte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB862739A (en) * 1959-07-17 1961-03-15 Sulzer Ag Paper-making machines
DE202007016891U1 (de) * 2007-12-03 2008-02-14 Langbein & Engelbracht Gmbh Trockenhaube
WO2010000938A2 (fr) * 2008-06-30 2010-01-07 Metso Paper, Inc. Paroi terminale d’un sécheur de pâte, sécheur de pâte et procédé de surveillance des parties internes d’un sécheur de pâte

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