EP1612328B2 - Vorrichtung zum kontinuierlichen Trocknen einer Faserstoffbahn - Google Patents

Vorrichtung zum kontinuierlichen Trocknen einer Faserstoffbahn Download PDF

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Publication number
EP1612328B2
EP1612328B2 EP05012495A EP05012495A EP1612328B2 EP 1612328 B2 EP1612328 B2 EP 1612328B2 EP 05012495 A EP05012495 A EP 05012495A EP 05012495 A EP05012495 A EP 05012495A EP 1612328 B2 EP1612328 B2 EP 1612328B2
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EP
European Patent Office
Prior art keywords
cylinder shell
honeycombed
profile
drum
designed
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.)
Active
Application number
EP05012495A
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German (de)
English (en)
French (fr)
Other versions
EP1612328A1 (de
EP1612328B1 (de
Inventor
Wilhelm Dipl.-Ing. Mausser
Gerald Ing. Schadler
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.)
Andritz AG
Original Assignee
Andritz AG
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34916821&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1612328(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Andritz AG filed Critical Andritz AG
Publication of EP1612328A1 publication Critical patent/EP1612328A1/de
Publication of EP1612328B1 publication Critical patent/EP1612328B1/de
Application granted granted Critical
Publication of EP1612328B2 publication Critical patent/EP1612328B2/de
Active legal-status Critical Current
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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
    • D21F5/02—Drying on cylinders
    • D21F5/021—Construction of the cylinders

Definitions

  • the invention relates to a device for continuously drying a fibrous web, in particular tissue web with a drying drum and an air circuit, wherein the drying drum has a cylinder jacket, which is formed as a honeycomb-shaped body.
  • a device for continuously drying a fibrous web, in particular tissue web with a drying drum and an air circuit wherein the drying drum has a cylinder jacket, which is formed as a honeycomb-shaped body.
  • Such a device is from the document EP-A-0 315 961 known.
  • the drying process begins at an entry dry content of the tissue web of about 40% to 45%.
  • the mechanical pre-dewatering In order to achieve a higher volume of the paper is dispensed with the mechanical pre-dewatering and the initial dry content of such devices is today at about 20% to 25%.
  • These systems work with throughflow drying.
  • one or more flow through drums connected in series which have room temperature, are abruptly exposed to the supply air temperature of approx. 300 ° C.
  • Drying drums currently in use consist of thin-walled shell constructions, for example as perforated metal sheets or as honeycomb-shaped bodies, which are connected to thick-walled end flanges.
  • the invention now wants to eliminate this disadvantage. It is inventively characterized in that the honeycomb-shaped cylinder jacket of the drying drum is provided at its edges with an annular flexible transition profile, wherein the transition profile is designed as a U-profile.
  • U-profile designed as a transition profile profile is designed as a U-profile and preferably butt welded to the honeycomb-shaped cylinder jacket.
  • the special type of connection causes the stresses in the welds to be reduced so much that no deformation or even mechanical damage occurs at the welds.
  • a favorable embodiment of the invention is characterized in that the cross-section of the transition profile designed as a U-profile decreases towards its center. As a result, the heat flow can be influenced particularly well. It is produced with this design, a flexible connection, which also ensures the same centering of the cylinder jacket and thus an exact roundness.
  • honeycomb-shaped cylinder jacket is wider than the paper web to be dried, which allows a defined variation of the paper web width.
  • a favorable development of the invention is characterized in that at the edges in each case an endless ring is shrunk, which extends beyond the transition profile in the honeycomb-shaped cylinder jacket. This prevents penetration of dust or fibers into the cavity of the U-profile
  • the cylinder jacket consists of longitudinal ribs which are connected to vertical, folded profiles. As a result, a high stability of the cylinder jacket can be achieved.
  • a favorable embodiment of the invention is characterized in that the longitudinal ribs of the honeycomb-shaped cylinder jacket are arranged at a distance of between 20 and 80 mm, preferably between 30 and 40 mm. By a small distance results in a lower specific load and thus a reduction in the risk of marks on the paper web.
  • An advantageous embodiment of the invention is characterized in that the honeycomb-shaped, folded connecting profiles protrude in the radial direction over the longitudinal ribs and carry the paper web and the transport screen. This results in a large contact surface and a further reduction in the risk of markings of the paper web.
  • honeycomb-shaped cylinder jacket has an open area of at least 85%. This allows the fürströmtrocknungsrea perform particularly well.
  • a particularly favorable development of the invention is characterized in that covers are provided for stabilizing the cylinder jacket on the end faces, which are screwed to the cylinder jacket, in particular to the transition pieces.
  • This design ensures improved stability of the drum shell, in particular, a sliding between the lid and drum shell is prevented in a radial expansion due to the temperature.
  • An advantageous embodiment of the invention is characterized in that the drying drum has an exclusively welded drum body. This design virtually eliminates the areas where cracks could occur.
  • Fig. 1 a variant of an arrangement of a through-flow drying
  • Fig. 2 a cut through Fig. 1 along line II-II
  • Fig. 3 a drying drum according to the invention
  • Fig. 4 Detail IV in Fig. 3
  • Fig. 5 Detail V in Fig. 3
  • Fig. 6 a section according to line VI - VI in Fig. 3 represents.
  • Fig. 1 is a possible arrangement of a modströmtrocknung shown. It can be seen here the drum 1 with its bearings 2 and 3, and the drive 4. Under the drum is a two-piece hood 5 and 6 (see Fig. 2 ), from which the hot supply air through the paper web 7, a transport screen 8, then flows through the drying drum 1 into the interior of the drum, and is withdrawn via an annular channel 10 from the drum to the drive side. The approximately 300 ° C hot air is cooled by the drying process to about 120 ° C. This so cooled exhaust air is brought back to the entry state in a treatment system. At the end, the paper web 7 is guided with the transport screen 8 via a deflection roller 11.
  • the covering device 12 which covers the area of the drum 1 from the inside in the area which is not touched by the tissue web 7 and which is not wrapped by the hood 5 and 6.
  • the air can also be guided from the interior of the drying drum 1 through the cylinder jacket 9 to the outside.
  • Fig. 3 shows a section through a drying drum 1, consisting of a honeycomb-shaped cylinder jacket 9 with leader and drive side each welded with butt welds, flexible, rolled to a lying U-profile ring 13.
  • the outer flanges of these flexible rings 13 are screwed to the drum lids 14 and 15, the pins for receiving the two bearings 2 and 3, which bear in their execution of the change in length of the drying drum 1 by the temperature differences during heating and cooling in the cross machine direction.
  • the temperature of the exhaust air is usually about 120 ° C while the supply air into the drying drum has about 300 ° C.
  • the two drum edges are covered from the outside to the edges of the paper web with an endless ring 16, and it is thus prevents ingress of dust or fibers into the cavity of the U-profile.
  • This endless ring 16 is shrunk in such a way that it can not detach itself from the drum surface during heating, cooling or operation.
  • Fig. 4 shows a section through the connections sheath - flexible ring 13 and the welded joint thereof and the Flanschverschraubung 17 with the drum cover. 4
  • Fig. 5 is a view of the edge region of the drum 1 is shown. Here you can see the cover 16, which extends beyond the edges of the honeycomb cylinder jacket 9 and marks the edges of the paper.
  • Fig. 6 shows the support structure of the cylinder jacket 9 with longitudinal ribs 18 advantageously at a distance a of about 30 to 40 mm and the radially projecting beyond connecting profiles 19 which form the honeycomb shape and the paper web 7 and the support wire 8 carry.

Landscapes

  • Drying Of Solid Materials (AREA)
  • Paper (AREA)
EP05012495A 2004-06-28 2005-06-10 Vorrichtung zum kontinuierlichen Trocknen einer Faserstoffbahn Active EP1612328B2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0109504A AT413709B (de) 2004-06-28 2004-06-28 Vorrichtung zum kontinuierlichen trocknen einer faserstoffbahn

Publications (3)

Publication Number Publication Date
EP1612328A1 EP1612328A1 (de) 2006-01-04
EP1612328B1 EP1612328B1 (de) 2008-01-02
EP1612328B2 true EP1612328B2 (de) 2010-09-22

Family

ID=34916821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05012495A Active EP1612328B2 (de) 2004-06-28 2005-06-10 Vorrichtung zum kontinuierlichen Trocknen einer Faserstoffbahn

Country Status (10)

Country Link
US (1) US7690131B2 (pt)
EP (1) EP1612328B2 (pt)
JP (1) JP2006009238A (pt)
CN (1) CN1715557B (pt)
AT (1) AT413709B (pt)
AU (1) AU2005202714B2 (pt)
BR (1) BRPI0502471A (pt)
CA (1) CA2509870C (pt)
DE (1) DE502005002375D1 (pt)
MX (1) MXPA05007029A (pt)

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Publication number Priority date Publication date Assignee Title
AT413709B (de) * 2004-06-28 2006-05-15 Andritz Ag Maschf Vorrichtung zum kontinuierlichen trocknen einer faserstoffbahn
FI124682B (fi) * 2008-06-30 2014-12-15 Valmet Technologies Inc Sellukuivaimen päätyseinä, sellukuivain ja menetelmä sellukuivaimen sisäosien tarkastelemiseksi
WO2011093073A1 (ja) * 2010-01-26 2011-08-04 パナソニック株式会社 薄膜の製造装置、薄膜の製造方法及び基板搬送ローラ
US8225527B2 (en) * 2010-07-08 2012-07-24 Aventa Technologies Llc Cooling apparatus for a web deposition system
US8656605B2 (en) 2010-07-28 2014-02-25 Metso Paper Usa, Inc. System and method for thermal gradient control in thin shell structures
DE102010052044A1 (de) * 2010-11-23 2012-05-24 Vits Technology Gmbh Verfahren und Anlage zum Imprägnieren und Trocknen einer durchlaufenden Papierbahn
JP6667353B2 (ja) * 2016-04-12 2020-03-18 デュプロ精工株式会社 湿紙乾燥方法および古紙再生処理装置
DE102016109415A1 (de) * 2016-05-23 2017-11-23 Trützschler GmbH + Co KG Textilmaschinenfabrik Trocknereinrichtung und Trockner für eine textile Warenbahn mit einer verbesserten Einrichtung zur Wärmeeinbringung
DE102016125172A1 (de) * 2016-12-21 2018-06-21 Voith Patent Gmbh Verfahren zum Betrieb eines Heizgruppenteilsystems und Heizgruppenteilsystem
US10861236B2 (en) 2017-09-08 2020-12-08 Surgical Theater, Inc. Dual mode augmented reality surgical system and method
CN107940934B (zh) * 2017-12-05 2023-09-08 丰县赵庄镇农业技术推广服务中心 一种种子烘干机
CA3092024A1 (en) * 2018-05-01 2019-11-07 Valmet, Inc. Through air drying systems and methods with hot air injection
US11168442B1 (en) * 2020-07-08 2021-11-09 Valmet, Inc. Through-air apparatus with tension cam mechanism
CN113280602A (zh) * 2021-06-15 2021-08-20 安徽理工大学 一种盘式干燥机
CN114111238A (zh) * 2022-01-17 2022-03-01 广州市咏润纸业科技有限公司 一种防潮牛皮纸生产用烘干装置

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Also Published As

Publication number Publication date
JP2006009238A (ja) 2006-01-12
ATA10952004A (de) 2005-09-15
EP1612328A1 (de) 2006-01-04
EP1612328B1 (de) 2008-01-02
CN1715557A (zh) 2006-01-04
US20050283994A1 (en) 2005-12-29
AU2005202714A1 (en) 2006-01-12
CA2509870A1 (en) 2005-12-28
AU2005202714B2 (en) 2010-04-15
BRPI0502471A (pt) 2007-02-06
US7690131B2 (en) 2010-04-06
MXPA05007029A (es) 2006-01-11
CN1715557B (zh) 2011-04-06
CA2509870C (en) 2013-12-10
DE502005002375D1 (de) 2008-02-14
AT413709B (de) 2006-05-15

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