EP2791413A1 - Device for producing a material web - Google Patents
Device for producing a material webInfo
- Publication number
- EP2791413A1 EP2791413A1 EP12801543.5A EP12801543A EP2791413A1 EP 2791413 A1 EP2791413 A1 EP 2791413A1 EP 12801543 A EP12801543 A EP 12801543A EP 2791413 A1 EP2791413 A1 EP 2791413A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- segments
- housing
- outer cover
- web
- 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.)
- Withdrawn
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
- D21F5/02—Drying on cylinders
- D21F5/06—Regulating temperature
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
- F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
Definitions
- the invention relates to a device for producing, processing or processing a web-shaped material web, in particular a fibrous, paper, tissue or board web, with an interior and a housing at least partially surrounding it, which has an inner surface and an outer surface, wherein the interior has a different temperature to the environment of the housing, and the inner surface and / or the outer surface is provided at least in some areas with a thermal insulation layer.
- Devices of this type are known.
- the document WO201 1/030363 A1 discloses a Yankee drying cylinder for a paper machine with an insulation of the end covers.
- the insulation can be made up of several segments.
- the segments consist of an insulating sheet with applied insulating material. As insulation rockwool and glass wool is proposed.
- the segments are bolted to a connecting ring, which in turn is connected to the front cover.
- the object of the invention is to improve the known solutions relating to the isolation of components in papermaking.
- the object is solved by the features of claim 1. It is an apparatus for producing, processing or processing a web-shaped material web, in particular a fibrous, paper, tissue or board web, proposed, with an interior and this, at least partially surrounding, housing.
- the housing has an inner surface and an outer surface, wherein the interior has a different temperature to the environment of the housing, and the inner surface and / or the outer surface is provided at least in some areas with a thermal insulation layer.
- the thermal insulation layer comprises at least one coating.
- the coating preferably consists of a plurality of material components which, after application, form a solid layer on the housing, for example by curing.
- the coating is waterproof and thus, unlike glass and rock wool, insensitive to water and steam. The insulating effect is only negligibly affected by contact with water. The coating does not emit substances hazardous to humans even after prolonged use.
- a further advantage lies in a simple construction of the insulation construction which is possible by the use of a coating as thermal insulation.
- the multi-layered application method can also be different Combine coating compositions.
- the cover layer may comprise a waterproof layer or a layer without voids.
- the coating comprises cavities. The cavities can be completely or partially closed. The cavities are preferably filled with air or other gases with low heat conduction. This improves the insulation effect.
- the coating may have a foamy structure.
- the volume of the cavities of the coating has a volume fraction of 15% to 30%, preferably from 20% to 22%.
- the coating comprises at least partially ceramic material, whereby the coating is non-flammable and non-flammable.
- the coating contains at least partially a binder, in particular an acrylic compound, for the connection of the material components and for generating the adhesive and adhesive force with the inner surface and / or the outer surface of the housing.
- a binder in particular an acrylic compound
- the coating stretchable. Thermal expansion of the carrier material does not lead to damage, such as detachment and cracking of the insulation layer.
- the adhesive effect of the coating on almost all candidate materials is sufficient.
- the coating is applied to the housing by a spray process.
- air is preferably incorporated into the coating layer.
- the layer thickness of the coating is advantageously in a range of 2 mm to 10 mm, in particular in a range of 3.5 mm to 6 mm, preferably in the range of 3.5 mm to 4.5 mm. Depending on the application layer thicknesses greater than 10 mm are also possible.
- the housing comprises a jacket, in particular a roll shell, and end caps with bearing pins attached thereto on both sides, wherein the housing is preferably designed as a drying cylinder, in particular as a Yankee drying cylinder.
- the housing is designed as a cooling cylinder of a paper machine. Cooling cylinders are used, for example, at the end of the dryer section of a paper machine, in particular as the last cylinder, for cooling the paper web. The temperature inside the cooling cylinder is below the ambient temperature.
- Drying and cooling cylinders in paper machines are partially wrapped by the fibrous web in direct contact for drying or cooling purposes.
- the width of the fibrous web is less than the length of the drying and cooling cylinders. Heat losses occur in the edge areas not covered by the paper web.
- the housing comprises a drying cylinder, in particular a Yankee drying cylinder, with a diameter of more than 3 m, in particular more than 4 m. Yankee drying cylinders are used in tissue machines to dry the tissue web. Due to the large surface of the end cover and the resulting large heat loss, the invention can be used particularly advantageous here. Drying and cooling cylinders in paper machines are partially wrapped by the fibrous web in direct contact for drying or cooling purposes.
- the width of the fibrous web is less than the length of the drying and cooling cylinders. Heat losses therefore occur in the edge regions not covered by the paper web.
- the coating can therefore be applied annularly in certain areas in the interior in the region of the axial ends of the jacket of the drying cylinder in a range which extends beyond the width of the fibrous web.
- the end covers are provided on the inside and / or on the outside with the thermal insulation layer.
- at least one end cover comprises an inner and an outer cover. Both lids are connected to each other, for example screwed or welded. It is particularly advantageous, however, if the inner and the outer lid are detachably connected to each other.
- both end caps of the roll or dryer cylinder or chill roll include an inner and an outer lid.
- the outer cover comprises a plurality of segments, preferably more than 2 segments, in particular more than 8 segments.
- 10 segments and more are advantageous.
- the handling of the segments in the manufacture, assembly and coating is made easier by the smaller size and smaller weight achieved thereby.
- the coating can thus be easily applied outside the paper or tissue machine in the workshop under the optimum conditions, such as temperature, humidity, on the segments and prepared.
- Occupational safety measures such as For example, suction during the application of the coating, can be easily performed.
- the outer cover is provided on the inside and / or on the outside with the thermal insulation layer.
- the segments of the outer cover webs to increase the mechanical stability which preferably extend radially.
- the segments are made of sheet steel, preferably made of stainless steel sheet, wherein the webs advantageously formed by folding the segment sheet to a radial bending line.
- the webs advantageously formed by folding the segment sheet to a radial bending line.
- at least a portion of the adjacent webs of the segments can be screwed together. This creates a stable bond, especially in drying cylinders or large diameter rolls.
- both segments overlapping, radially aligned strips can be provided, which are screwed to the segments.
- the strips can be designed with webs and screwed or welded to the segments. These strips have a T-shaped cross-section.
- the radially aligned strips may be welded to one of the adjacent segments and bolted to the other. This reduces the manufacturing costs and the assembly time.
- the jacket is screwed at its ends with the end caps and / or welded.
- the end caps on an outer flange, which is bolted to the jacket.
- the outer cover is screwed to the inner lid. This is especially true when the outer cover is formed of segments. Since the thermal insulation layer is designed as a coating and less space is required, the segments can be screwed at its radial outer end directly to the inner lid without an additional intermediate ring to use. The segmentation simplifies the assembly and disassembly of the outer lid during maintenance work inside the drying cylinder or the roller, since only one of the manhole of the drying cylinder associated segment must be removed.
- the inner cover at least one end cover, comprises an opening and a segment of the outer cover has a marking for detecting the position of the opening, for example a manhole.
- the segment having the marking is aligned with the opening.
- Figure 1 is a simplified illustration of an example of a device according to the invention as an embodiment of a drying cylinder;
- Figure 2 shows an embodiment of a drying cylinder with two-part front cover and with a multi-segment outer cover;
- FIG. 3 shows a detail of that shown in FIG
- FIG. 4 shows a segment with applied coating on the
- the drying cylinder 5 comprises a jacket 6, as well as at each axial end depending on a front cover 7, on which bearing pins 8 are fixed for rotatably supporting the drying cylinder 5 in the paper or Tissuemaschine.
- the end cover 7 and the shell 6 form an interior which is heated with steam to temperatures in the range of 1 10 ° C and more.
- the thus heated jacket 6 is partially wrapped by a web to be dried 2, in this example of a paper or tissue web, in direct contact.
- the width of the material web 2 is less than the length of the shell 6. The axial end portions of the shell 6 are therefore not covered by the fibrous web.
- FIG. 2 is an embodiment of an axial end of a drying cylinder 5 of Figure 1 shown in a perspective view.
- the end cover 7, 7.1, 7.2 is made in two parts and comprises an inner cover 7.1 and a plurality of segments 9 comprehensive outer cover 7.2.
- the inner lid 7.1 has an outer flange 13 which is screwed to the jacket 6 of the drying cylinder 5.
- the segments 9 of the outer cover 7.2 are screwed at its outer periphery directly to the outer flange 13 and in the region of its inner circumference with an inner flange 12 connected to the bearing journal 8.
- the inner lid 7.1 has an opening, a so-called manhole 15, which allows access to the interior of the drying cylinder 5 for maintenance.
- the position of the manhole 15 is marked on a segment 9 or on the visible part of the inner end cover 7.1.
- One or more segments 9 of the outer cover 7.2 are arranged during assembly so that by removing the one or more segments 9 access to the manhole 15 is possible.
- the segments 9 of the outer cover 7.2 have webs 10 for increasing the mechanical stability, which preferably extend radially.
- the segments 9 are made of sheet steel, preferably made of stainless steel sheet, wherein the webs 10 are advantageously made by bending the segment sheet to a radial bending line.
- both segments 9 overlapping, radially aligned strips 1 1, are provided, which are bolted to the segments 9.
- the strips 1 1 can be performed with webs 10 and bolted to the segments 9 or welded. These strips 1 1 have a T-shaped cross-section.
- the radially aligned strips 1 1 are welded to one of the adjacent segments 9 and with the others screwed.
- the bearing pins 8 are connected to a flange 16 with the end covers 7.
- the end cover 7.1, 7.2 they are connected to a flange 16 with the inner covers 7.1.
- FIG. 3 shows a detail of the exemplary embodiment illustrated and described in FIG.
- FIG. 4 shows a segment 9 with a coating 4 applied as thermal insulation layer on the inside, that is to say on the side facing the drying cylinder 5.
- a coating 4 applied as thermal insulation layer on the inside, that is to say on the side facing the drying cylinder 5.
- webs 10 are provided on both radially extending sides of the segment 9 Direction of the inside were made. The lengths of the webs 10 are shorter than the radial length of the edges of the segment 9. To ensure a stable connection of the segments 9 with the drying cylinder 5, the webs 10 in the region of the connection to the inner flange 12 and the outer flange 13 are reset.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201120109246 DE202011109246U1 (en) | 2011-12-14 | 2011-12-14 | Device for producing a material web |
DE201110088513 DE102011088513A1 (en) | 2011-12-14 | 2011-12-14 | Device, particularly paper or tissue machine for manufacturing, processing or machining of web-shaped material web, comprises housing, which has inner surface and outer surface provided with thermal insulation layer, which has coating |
PCT/EP2012/075019 WO2013087597A1 (en) | 2011-12-14 | 2012-12-11 | Device for producing a material web |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2791413A1 true EP2791413A1 (en) | 2014-10-22 |
Family
ID=47358164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12801543.5A Withdrawn EP2791413A1 (en) | 2011-12-14 | 2012-12-11 | Device for producing a material web |
Country Status (4)
Country | Link |
---|---|
US (1) | US9428861B2 (en) |
EP (1) | EP2791413A1 (en) |
CN (1) | CN204238067U (en) |
WO (1) | WO2013087597A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015014515A1 (en) * | 2013-08-01 | 2015-02-05 | Voith Patent Gmbh | Large-cylinder drying drum and method for producing a large-cylinder drying drum |
ITFI20130241A1 (en) | 2013-10-15 | 2015-04-16 | Celli Paper S P A A | "PLANT COMPONENTS FOR THE PRODUCTION OF DAMP PAPER" |
ITUA20163151A1 (en) * | 2015-05-08 | 2017-11-04 | A Celli Paper Spa | METHOD OF COVERING CYLINDERS FOR CUTTING MACHINES AND CYLINDERS SO OBTAINED |
US10533283B2 (en) * | 2017-07-18 | 2020-01-14 | Valmet, Inc. | Reduced diameter foraminous exhaust cylinder |
CN107700272B (en) * | 2017-10-17 | 2023-12-12 | 溧阳市江南烘缸制造有限公司 | Dryer heat preservation end cover |
SE542227C2 (en) * | 2018-04-27 | 2020-03-17 | Valmet Oy | A yankee drying cylinder for drying a wet fibrous web |
EP3947812A1 (en) * | 2019-03-26 | 2022-02-09 | Toscotec S.p.a. | Method for manufacturing a steel yankee drier and a steel yankee drier |
US11168442B1 (en) * | 2020-07-08 | 2021-11-09 | Valmet, Inc. | Through-air apparatus with tension cam mechanism |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6338366B1 (en) * | 2001-01-11 | 2002-01-15 | David R. Williams | Pipe insulation with a jacket measured in fractions of an inch |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI106054B (en) * | 1999-03-29 | 2000-11-15 | Valmet Corp | Thermo roll for a paper / cardboard machine or finishing machine and process for making the thermo roll |
DE3023298C2 (en) * | 1980-06-21 | 1985-09-26 | J.M. Voith Gmbh, 7920 Heidenheim | Steam heated drying cylinder |
US4385453A (en) * | 1981-04-28 | 1983-05-31 | Leland A. Withers, Sr. | End panel insulator assembly for temperature controlled rotary cylinder |
US4399169A (en) * | 1981-06-22 | 1983-08-16 | Mcgowan Paul J | Insulative end cap for cylindrical metal drying rollers of paper drying machines, and process for fabrication thereof |
FI82094C (en) * | 1989-02-16 | 1997-09-09 | Valmet Corp | Anvaendning av en legering av ett metallpulver och en carbid eller nitride innefattande belaeggningskomposition Foer en i en pappersmaskin anvaendbar yankeecylinder |
US5252185A (en) * | 1990-11-30 | 1993-10-12 | S. D. Warren Company | Method and apparatus for calendering paper and internally heated roll |
US5327661A (en) * | 1991-01-18 | 1994-07-12 | Institute Of Paper Science And Technology, Inc. | Method and apparatus for drying web |
US5667641A (en) * | 1995-10-23 | 1997-09-16 | Pulp And Paper Research Institute Of Canada | Application of thermal barrier coatings to paper machine drying cylinders to prevent paper edge overdrying |
US6339883B1 (en) * | 2000-02-25 | 2002-01-22 | Voith Sulzer Paper Technology North America, Inc. | Method of making a roll for paper-making machine |
FI20002122A (en) * | 2000-06-02 | 2001-12-03 | Metso Paper Inc | Arrangements to improve the beginning of the drying section |
FI117641B (en) * | 2004-07-28 | 2006-12-29 | Metso Paper Inc | A roll for a forming machine and a method for making a corresponding roll |
BRPI0721415B1 (en) * | 2007-03-01 | 2020-11-10 | Toscotec S.P.A. | yankee cylinder made of steel, which includes a cylindrical housing joined at two ends |
IT1395588B1 (en) | 2009-09-09 | 2012-10-16 | Toscotec S P A | "INSULATED MONOLUCID CYLINDER" |
-
2012
- 2012-12-11 WO PCT/EP2012/075019 patent/WO2013087597A1/en active Application Filing
- 2012-12-11 US US14/365,758 patent/US9428861B2/en not_active Expired - Fee Related
- 2012-12-11 CN CN201290001065.2U patent/CN204238067U/en not_active Expired - Fee Related
- 2012-12-11 EP EP12801543.5A patent/EP2791413A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6338366B1 (en) * | 2001-01-11 | 2002-01-15 | David R. Williams | Pipe insulation with a jacket measured in fractions of an inch |
Also Published As
Publication number | Publication date |
---|---|
US9428861B2 (en) | 2016-08-30 |
US20150129149A1 (en) | 2015-05-14 |
CN204238067U (en) | 2015-04-01 |
WO2013087597A1 (en) | 2013-06-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2013087597A1 (en) | Device for producing a material web | |
EP2385171B1 (en) | Yankee cylinder for drying a sheet of fibrous material | |
EP1836346B1 (en) | Device and method for producing and/or transforming a web of fibrous material | |
DE202007019227U1 (en) | Yankee cylinder for a papermaking machine | |
AT12906U1 (en) | Method of making a Yankee cylinder | |
EP1738022B1 (en) | Heated cylinder | |
DE69023742T2 (en) | Vacuum guide roller. | |
DE69417121T2 (en) | Drying section of a paper machine | |
DE102011088513A1 (en) | Device, particularly paper or tissue machine for manufacturing, processing or machining of web-shaped material web, comprises housing, which has inner surface and outer surface provided with thermal insulation layer, which has coating | |
DE202011109246U1 (en) | Device for producing a material web | |
DE102005043734A1 (en) | Heat treatment drum for paper mill surface finishing process has modular assembly retained within segmented cylindrical ring | |
EP3583264B1 (en) | Drying hood, drying assembly and use thereof | |
AT411910B (en) | DEVICE FOR CONTINUOUS DRYING OF A FIBER web | |
DE202011106241U1 (en) | hood | |
DE102011088514A1 (en) | Device for manufacturing and processing web-shaped material e.g. fibrous material, has thermal insulation layer provided in areas of inner surface and outer surface of housing, and formed with coating | |
WO2002093096A1 (en) | Through-flow cylinder | |
DE10157690C1 (en) | Calender assembly with a wide nip, to polish the surfaces of paper/cardboard webs, has a steam jet aligned at the web on leaving the nip to increased the polished surface effects | |
DE3023298C2 (en) | Steam heated drying cylinder | |
AT513424B1 (en) | Plant for heat transfer in a fiber web machine, surface treatment device for processing the fiber web surface and drying section of a fiber web machine | |
DE102008043918A1 (en) | Dryer arrangement for drying of paper, cardboard, tissue or other fibrous webs in material web fabrication or treatment machine, has section of inner cylindrical surface enlaced by inner pressure cap | |
DE9416865U1 (en) | Thermal insulation arrangement and insulation element for the shaft of a thermal roller | |
DE1604793C (en) | Drum dryer | |
WO2011045237A1 (en) | End face cover | |
DE102015200901A1 (en) | Steam-heated cylinder | |
DE102015200896A1 (en) | drying cylinders |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20140714 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20160415 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: D21F 5/06 20060101AFI20170223BHEP Ipc: D21F 5/02 20060101ALI20170223BHEP Ipc: F26B 13/18 20060101ALI20170223BHEP |
|
INTG | Intention to grant announced |
Effective date: 20170313 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20170725 |