EP1116823B1 - Trockenpartie - Google Patents
Trockenpartie Download PDFInfo
- Publication number
- EP1116823B1 EP1116823B1 EP00123589A EP00123589A EP1116823B1 EP 1116823 B1 EP1116823 B1 EP 1116823B1 EP 00123589 A EP00123589 A EP 00123589A EP 00123589 A EP00123589 A EP 00123589A EP 1116823 B1 EP1116823 B1 EP 1116823B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transfer
- fibrous web
- dryer
- press
- dryer section
- 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.)
- Expired - Lifetime
Links
- 238000001035 drying Methods 0.000 claims description 40
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F2/00—Transferring continuous webs from wet ends to press sections
-
- 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
- D21F5/04—Drying on cylinders on two or more drying cylinders
-
- 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
- D21F5/04—Drying on cylinders on two or more drying cylinders
- D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
-
- 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
- F26B13/06—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement with movement in a sinuous or zig-zag path
- F26B13/08—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement with movement in a sinuous or zig-zag path using rollers
Definitions
- the invention relates to a drying section for drying a fibrous web, in particular a paper, cardboard or tissue web in machines for production and / or finishing the same consisting of several drying groups, in which the fibrous web is passed over heated drying cylinders and guide rolls, wherein the fibrous web of at least one band of the respective drying group against pressed the outer surface of the drying cylinder and the fibrous web at least a transfer point between two revolving transfer elements is passed and the transferring transfer element is faster than that having transferring transfer element.
- Such a drying section is known from DE-C-42 20682.
- the transfer of the fibrous web takes place in general from the last Drying cylinder of a dryer group to the dryer fabric of the following Drying group, wherein the drying wire the drying cylinder at least slightly wraps.
- This wrap ensures on the one hand a secure transfer of Fiber web, especially at high web speeds, but limited to the other side the maximum speed difference between the Transfer elements.
- the object of the invention is therefore to provide a way to build a possible small, but sufficient speed difference between the Transfer elements while ensuring a secure leadership and To provide transfer of the fibrous web at the transfer point.
- the trapping of the fibrous web between the transfer elements is excluded, whereby larger differences in speed are possible without adverse effects on the paper quality.
- the distance between the transfer elements is so small that nevertheless a secure guidance of the fibrous web is given at the transfer point. It is advantageous here if the distance between the transfer elements at the transfer point with a speed difference is greater than zero and less than 35 mm.
- the transfer elements can be used as a roller, preferably as a drying cylinder and / or be designed as a band, preferably as a dryer fabric. Should a band to Application come, so it is advantageous if the receiving transfer element is formed as a band and at the transfer point via a suction element, is preferably performed in the form of an evacuated roll.
- the suction element supports the takeover of the fibrous web and adhesion to the material taking over band.
- the first drying group should only one or two, preferably have a drying cylinder. This should be the speed the receiving transfer element at the transfer point between the first and second drying group at most 2.5%, preferably 0.5 to 2.0% higher than that be the transferring transfer element.
- the fibrous web 1 runs in the press section through at least one of two Press rollers 10 formed press nip.
- the pressed out in the press nip Water is absorbed by endless circulating press felts 9, which together be guided with the fibrous web 1 through the press nip.
- the decrease is from a vacuumed and Supported by the band 4 guide roller supports.
- the evacuated Guide roll a perforated roll shell whose interior with a Vacuum source is connected.
- the band 4 leads the fibrous web 1 to the single, heated drying cylinder 2 of first drying group of the dryer section and presses the fibrous web 1 against the Lateral surface of the heated drying cylinder 2. This causes heating the fibrous web 1 and the evaporation of moisture contained in it.
- the band 4 can also be used as an air-impermeable transfer belt or as an air-permeable Transfer felt be executed, which the fibrous web 1 from the press section to first drying cylinder 2 of the dryer section leads.
- this tape 4 of the first dryer group After the removal of this tape 4 of the first dryer group runs the Fibrous web 1 to the transfer point 5 on the drying cylinder 2 on.
- the fibrous web 1 from a band 4 of the second Drying group taken in the form of an air-permeable dryer.
- This Band 4 alternately transfers the fibrous web 1 in the second drying group heated, arranged in an upper row drying cylinder 2 and sucked, in one arranged guide row 3, wherein the fibrous web 1 against the Jacket surface of the drying cylinder 2 is pressed.
- the transfer of the fibrous web 1 between the transfer element 6 in the form of Drying cylinder 2 of the first drying group and the transfer element 7 in the form of the belt 4 of the second drying group is here by a suction element. 8 supported.
- the sucked element 8 designed as a suctioned guide roll is used for this purpose by the Band 4 entwined.
- the distance between the transfer elements 6,7 at the transfer point 5 is smaller than 35 mm, but also no press nip between the drying cylinder 2 of the first drying group and the suction element 8 is formed.
- the speed of the transferring transfer element 7 is 0.5 to 2% is higher than that of the transferring transfer element 6.
- On the other side is the distance between the transfer elements 6,7 so small that the secure guidance the fibrous web 1 is not endangered.
- the leadership is still through the Suction element 8 additionally stabilized.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Paper (AREA)
Description
Vorteilhaft ist es hierbei, wenn der Abstand zwischen den Transferelementen an der Übergabestelle mit Geschwindigkeitsdifferenz größer als Null und kleiner als 35 mm ist.
Claims (7)
- Trockenpartie zur Trocknung einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn (1) in Maschinen zur Herstellung und/oder Veredelung derselben bestehend aus mehreren Trockengruppen, in denen die Faserstoffbahn (1) über beheizte Trockenzylinder (2) und Leitwalzen (3) geführt wird, wobei ein Band (4) die Faserstoffbahn (1) von einer Pressenpartie zur Trockenpartie führt, die Faserstoffbahn (1) von wenigstens einem Band (4) der jeweiligen Trockengruppe gegen die Mantelfläche der Trockenzylinder (2) gedrückt und die Faserstoffbahn (1) zumindest an der Übergabestelle (5) zwischen der ersten und der zweiten Trockengruppe zwischen zwei mitlaufenden Transferelementen (6,7) übergeben wird, wobei ein Transferelement (6) als Trockenzylinder (2) und ein Transferelement (7) als Band (4) ausgebildet ist,
das übernehmende Transferelement (7) eine höhere Geschwindigkeit als das übergebende Transferelement (6) aufweist und die Transferelemente (6,7) an der Übergabestelle (5) einen Abstand von mehr als Null und weniger als 70 mm aufweisen, dadurch gekennzeichnet, dass die Faserstoffbahn (1) in der Pressenpartie gemeinsam mit Pressfilzen (9) durch mindestens einen von zwei Presswalzen (10) gebildeten Presspalt läuft und das Band (4), das die Faserstoffbahn (1) von der Pressenpartie zur Trockenpartie führt, die Faserstoffbahn (1) von einem Pressfilz (9) einer unteren Presswalze (10) des einzigen oder letzten Pressspaltes übernimmt. - Trockenpartie nach Anspruch 1, dadurch gekennzeichnet, dass der Abstand zwischen den Transferelementen (6,7) an der Übergabestelle (5) größer als Null und kleiner als 35 mm ist.
- Trockenpartie nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das übernehmende Band (4) an der Übergabestelle (5) über ein Saugelement (8) vorzugsweise in Form einer besaugten Walze geführt wird.
- Trockenpartie nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
das Band (4) die Walze an der Übergabestelle (5) nicht umschlingt. - Trockenpartie nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
die erste Trockengruppe nur einen oder zwei, vorzugsweise einen Trockenzylinder (2) besitzt. - Trockenpartie nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass
zumindest an der Übergabestelle (5) zwischen der ersten und zweiten Trockengruppe eine Geschwindigkeitsdifferenz zwischen den Transferelementen (6,7) vorliegt. - Trockenpartie nach Anspruch 6, dadurch gekennzeichnet, dass die Geschwindigkeit des übernehmenden Transferelementes (7) an der Übergabestelle (5) zwischen der ersten und zweiten Trockengruppe maximal 2,5 %, vorzugsweise 0,5 bis 2,0 % höher als die des übergebenden Transferelementes (6) ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19959669A DE19959669A1 (de) | 1999-12-10 | 1999-12-10 | Trockenpartie |
DE19959669 | 1999-12-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1116823A2 EP1116823A2 (de) | 2001-07-18 |
EP1116823A3 EP1116823A3 (de) | 2002-06-26 |
EP1116823B1 true EP1116823B1 (de) | 2005-04-06 |
Family
ID=7932202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00123589A Expired - Lifetime EP1116823B1 (de) | 1999-12-10 | 2000-10-28 | Trockenpartie |
Country Status (4)
Country | Link |
---|---|
US (1) | US6367164B1 (de) |
EP (1) | EP1116823B1 (de) |
CA (1) | CA2327922A1 (de) |
DE (2) | DE19959669A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE50110918D1 (de) * | 2000-05-24 | 2006-10-19 | Voith Patent Gmbh | Trockenpartie |
FI121081B (fi) * | 2002-01-08 | 2010-06-30 | Metso Paper Automation Oy | Menetelmä ja laitteisto paperikoneen tai paperirainan jälkikäsittelylaitteen yhteydessä |
DE10213144A1 (de) * | 2002-03-23 | 2003-10-02 | Voith Paper Patent Gmbh | Pressanordnung |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5101577A (en) * | 1987-02-13 | 1992-04-07 | Beloit Corporation | Web transfer apparatus |
US5184408A (en) * | 1990-01-19 | 1993-02-09 | J. M. Voith Gmbh | Dryer section |
DE4201107C2 (de) | 1991-01-24 | 1993-10-14 | Voith Gmbh J M | Trockenpartie |
US5355593A (en) | 1992-06-24 | 1994-10-18 | J.M. Voith Gmbh | Device for transferring a fiber web |
DE4220682C1 (de) * | 1992-06-24 | 1993-12-23 | Voith Gmbh J M | Vorrichtung zum Überführen einer Faserstoffbahn |
US5526579A (en) * | 1993-02-17 | 1996-06-18 | J.M. Voith Gmbh | Dryer section |
DE4328555A1 (de) * | 1993-08-25 | 1994-03-31 | Voith Gmbh J M | Trockenpartie |
US5632101A (en) * | 1994-09-16 | 1997-05-27 | Voith Sulzer Papiermaschinen Gmbh | All top-felted single-tier drying section with post drying section curl control |
US5771603A (en) * | 1994-09-16 | 1998-06-30 | Voith Sulzer Papiermashinen Gmbh | Dryer section |
US5638611A (en) * | 1995-10-18 | 1997-06-17 | Voith Sulzer Papiermaschinen Gmbh | Single-tier drying section tailored for compensating stretching and shrinking of paper web |
DE19543086A1 (de) * | 1995-11-18 | 1997-05-22 | Voith Sulzer Papiermasch Gmbh | Trockenpartie |
DE19615226A1 (de) * | 1996-04-18 | 1997-10-23 | Voith Sulzer Papiermasch Gmbh | Trockenpartie |
DE19642526A1 (de) * | 1996-10-15 | 1998-04-16 | Voith Sulzer Papiermasch Gmbh | Trockenpartie |
DE19805723A1 (de) * | 1998-02-12 | 1999-08-19 | Voith Sulzer Papiertech Patent | Trockenpartie sowie Verfahren zum Betreiben einer solchen Trockenpartie |
-
1999
- 1999-12-10 DE DE19959669A patent/DE19959669A1/de not_active Withdrawn
-
2000
- 2000-10-28 EP EP00123589A patent/EP1116823B1/de not_active Expired - Lifetime
- 2000-10-28 DE DE50009987T patent/DE50009987D1/de not_active Expired - Lifetime
- 2000-11-22 US US09/717,158 patent/US6367164B1/en not_active Expired - Fee Related
- 2000-12-08 CA CA002327922A patent/CA2327922A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE50009987D1 (de) | 2005-05-12 |
EP1116823A3 (de) | 2002-06-26 |
US6367164B1 (en) | 2002-04-09 |
CA2327922A1 (en) | 2001-06-10 |
DE19959669A1 (de) | 2001-06-13 |
EP1116823A2 (de) | 2001-07-18 |
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