EP0653513B1 - Verfahren zum Trocknen einer Papierbahn sowie Trockenpartie einer Papiermaschine - Google Patents
Verfahren zum Trocknen einer Papierbahn sowie Trockenpartie einer Papiermaschine Download PDFInfo
- Publication number
- EP0653513B1 EP0653513B1 EP94116045A EP94116045A EP0653513B1 EP 0653513 B1 EP0653513 B1 EP 0653513B1 EP 94116045 A EP94116045 A EP 94116045A EP 94116045 A EP94116045 A EP 94116045A EP 0653513 B1 EP0653513 B1 EP 0653513B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drying
- paper web
- speed
- cylinder
- dryer
- 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
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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
- D21F5/04—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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/02—Mechanical driving arrangements
Definitions
- the invention relates to a method for drying a Paper web according to the preamble of claim 1 and one Dryer section according to the preamble of claim 5.
- Dryer sections in which the paper web alternates wraps around an upper drying cylinder, and then immediately afterwards a lower drying cylinder, see above that from cylinder to cylinder alternately one and the other other side of the paper web direct cylinder contact Has.
- the train should be at the highest Working speeds with the greatest security through the Run the machine through. As far as possible, none should Web breaks occur.
- the drying should be as possible be intense so that a certain one, in the paper web amount of water contained in the smallest possible way is driven out so that the overall length of the dryer section can be kept as small as possible.
- these mentioned properties - high runability and high energy density - there are other requirements to the mentioned method or to the mentioned Dryer section. It is very important for some types of paper gentle drying in order to achieve certain paper properties influence. Above all, this included avoiding Shrink folds.
- the invention has for its object a method or a dryer section of the genera mentioned shape that the energy density and thus the intensity drying can be increased significantly without other disadvantages occur. At the same time a Procedures are specified with which sensitive Allow papers to dry particularly gently.
- the inventors recognized that the first subtask can be solved in that the peripheral speed at least one or more drying cylinders higher is measured as the speed of the paper web.
- Differential speed between the lateral surface of the Drying cylinder on the one hand and the paper web on the other is the amount of heat that the surface of the paper web provides, correspondingly larger than at identical speeds.
- the inventors also recognized that the second Partial task can be solved in that the Peripheral speed of at least one or more Drying cylinder is dimensioned smaller than that Speed of the paper web. This means that the concerned drying cylinder rotates more slowly than that Paper web, and that again a certain amount of sliding or grinding the paper web on the outer surface of the concerned drying cylinder takes place.
- This Sprayer was dispensing a spray agent at very short notice, that is the static friction between the running web on the one hand and the outer surface of the drying cylinder in question on the other hand, so that it slides. Once a sliding state has occurred, it would this can be maintained even without continuing Spray is added.
- the spray can either on the paper web, or on the outer surface of the Drying cylinder, or in the wedge-shaped inlet gap can be entered between these two.
- the dryer section comprises seven dryer groups I to V.
- Each dryer group has its own support belt 1 to 5 as well as a number of drying cylinders 10 and a number of Deflection suction rollers 11, furthermore the usual others Guide rollers 13 for guiding, tensioning and regulating endless support strap loop.
- Horizontal are shown Drying cylinder series; however, vertical or inclined rows of cylinders are provided.
- Each of the Drying groups I-V have their own drive.
- At least one of the represented dryer groups I to V at least one of the Cylinder driven at such a speed that the Peripheral speed of this cylinder ("quick cylinder") is greater than the speed of the paper web 9.
- the other cylinders have the same Peripheral speed, like the dryer fabric. Due to the Difference speed between the concerned Rapid cylinder and the paper web come to a Sliding or grinding the paper web. Because every Surface element of the paper web with several surface elements the lateral surface of the quick cylinder in question When touched, more heat is transferred to the paper web brought up so that there is a more intensive drying of the Paper web is coming.
- dryer group I three cylinders 10 are conventionally driven, ie they have the same peripheral speed as paper web 9.
- the first cylinder 10A is over one Gearbox G and via a drive shaft 32 with increased Speed driven.
- the other cylinders 10B however, have the same in a conventional manner Peripheral speed, such as the paper web 9.
- the first two have Cylinder 10C does not have its own drive, but is powered by Paper web 9 taken away.
- the third and fourth cylinders 10D are conventionally powered, i.e. with the same Peripheral speed, like the paper web.
- the last Cylinder 10E on the other hand, has its own engine M 'which drives it drives at increased speed.
- the first cylinder 10C has none own drive.
- the second cylinder 10F is conventional i.e. with normal peripheral speed, driven.
- the third cylinder 10G has one opposite the paper web increased speed.
- the fourth drying cylinder has 10H normal speed again.
- the cylinders 10F, 10G, 10H are coupled to each other via gears. Cylinder 10G has a smaller drive gear than cylinders 10F and 10H.
- dryer group V the only cylinder is 10 conventional, i.e. at the same peripheral speed driven like the paper web 9.
- the one or more quick cylinder at the beginning of Dryer section, in the middle, or at the end of the dryer section to arrange can be appropriate.
- Drying group III with one or more high-speed cylinders be equipped, while the other dryer groups with normal running cylinders are provided.
- the respective quick cylinder either on Beginning, in the middle, or at the end of the concerned Arrange dryer group.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Drying Of Solid Materials (AREA)
Description
In der Trockengruppe I sind drei Zylinder 10 konventionell angetrieben, d.h. sie haben dieselbe Umfangsgeschwindigkeit, wie die Papierbahn 9.
Claims (8)
- Verfahren zum Trocknen einer Papierbahn (9), wobei die Papierbahn die Mantelflächen dampfbeheizter, drehbar gelagerter Trockenzylinder (10) umschlingt, dadurch gekennzeichnet, daß die Umfangsgeschwindigkeit wenigstens eines Trockenzylinders (10) von der Geschwindigkeit der Papierbahn (9) bzw. eines die Papierbahn tragenden Stützgewebes (2,3,4) abweicht.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Umfangsgeschwindigkeit wenigstens eines Trockenzylinders (10A,10C) höher als die Geschwindigkeit der Papierbahn (9) bzw. eines die Papierbahn tragenden Stützgewebes (2,3,4) ist.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Umfangsgeschwindigkeit wenigstens eines Trockenzylinders (10G) niedriger als die Geschwindigkeit der Papierbahn (9) bzw. eines die Papierbahn tragenden Stützgewebes (2,3,4) ist.
- Verfahren nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß die Differenz zwischen der Umfangsgeschwindigkeit des betreffenden Zylinders (10A,10E,10G) während des Betriebes einstellbar ist.
- Trockenpartie einer Papiermaschine mit den folgenden Merkmalen:5.1 eine Mehrzahl von beheizten Trockenzylindern (10), die hintereinander angeordnet sind;5.2 ein Stützgewebe, das die Trockenzylinder (10) umschlingt, wobei die Papierbahn (9) wenigstens bezüglich einiger Trockenzylinder (10) zwischen deren Mantelflächen und dem Stützgewebe (2,3,4) sandwichartig eingehüllt ist;5.3 wenigstens einige der Trockenzylinder (10) sind mit einem Antrieb versehen, um der Papierbahn und dem Stützgewebe eine bestimmte Geschwindigkeit zu erteilen,
gekennzeichnet durch die folgenden Merkmale:5.4 wenigstens ein Trockenzylinder (10A,10E,10G) ist mit einer solchen Drehzahl antreibbar, daß seine Umfangsgeschwindigkeit von der Geschwindigkeit der Papierbahn (9) bzw. eines die Papierbahn tragenden Stützgewebes (2,3,4) abweicht. - Trockenpartie nach Anspruch 5, dadurch gekennzeichnet, daß der betreffende Trockenzylinder (10A,10E) mit einer Drehzahl antreibbar ist, daß seine Umfangsgeschwindigkeit größer als die Bahngeschwindigkeit bzw. als eines die Bahn (9) tragenden Stützgewebes (2,3,4) ist.
- Trockenpartie nach Anspruch 5, dadurch gekennzeichnet, daß wenigstens ein Trockenzylinder (10G) mit einer Drehzahl antreibbar ist, daß seine Umfangsgeschwindigkeit kleiner als die Bahngeschwindigkeit bzw. als die Geschwindigkeit eines die Papierbahn (9) tragenden Stützgewebes (2,3,4) ist.
- Trockenpartie nach einem der Ansprüche 5-7, dadurch gekennzeichnet, daß dem einzelnen Schnellzylinder (10A,10E) Mittel zum Überwinden der Haftreibung zwischen Papierbahn (9) bzw. Stützgewebe (2,3,4) einerseits und Mantelfläche des Schnellzylinders (10A,10E) andererseits zugeordnet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/150,449 US5467534A (en) | 1993-11-10 | 1993-11-10 | Procedure for drying a paper web and a drying part for a paper machine |
US150449 | 2002-05-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0653513A2 EP0653513A2 (de) | 1995-05-17 |
EP0653513A3 EP0653513A3 (de) | 1996-01-31 |
EP0653513B1 true EP0653513B1 (de) | 2000-01-19 |
Family
ID=22534582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94116045A Expired - Lifetime EP0653513B1 (de) | 1993-11-10 | 1994-10-12 | Verfahren zum Trocknen einer Papierbahn sowie Trockenpartie einer Papiermaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US5467534A (de) |
EP (1) | EP0653513B1 (de) |
JP (1) | JPH07189161A (de) |
AT (1) | ATE189015T1 (de) |
CA (1) | CA2135502A1 (de) |
DE (1) | DE4404717C2 (de) |
FI (1) | FI945280A (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5467534A (en) * | 1993-11-10 | 1995-11-21 | Salter; Robert L. | Procedure for drying a paper web and a drying part for a paper machine |
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 |
DE19602492C2 (de) * | 1996-01-25 | 2000-12-07 | Voith Sulzer Papiermasch Gmbh | Maschine zur Herstellung einer Papier- oder Kartonbahn |
DE19644018A1 (de) * | 1996-10-31 | 1998-05-07 | Voith Sulzer Papiermasch Gmbh | Maschine und Verfahren zur Herstellung einer Materialbahn, insbesondere Papier- oder Kartonbahn |
EP1239075A1 (de) * | 1996-12-18 | 2002-09-11 | Voith Paper Patent GmbH | Maschine zur Herstellung einer Materialbahn |
DE102013203626A1 (de) | 2013-03-04 | 2014-09-18 | Voith Patent Gmbh | Optimierung der Trockengruppenregelung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE592125C (de) * | 1931-01-20 | 1934-02-01 | Karl Schoenemann | Antriebsvorrichtung fuer Papier- und aehnliche Maschinen |
DE1157902B (de) * | 1957-09-30 | 1963-11-21 | Beloit Iron Works | Antrieb fuer Trockenzylinder einer Papiermaschine |
US3801426A (en) * | 1970-08-26 | 1974-04-02 | Westinghouse Electric Corp | Dryer control and grade change system for a paper machine |
FI50263C (fi) * | 1974-09-12 | 1976-01-12 | Valmet Oy | Laite paperikoneessa paperirainan siirtämiseksi puristinosalta kuivaus osalle. |
GB8805786D0 (en) * | 1988-03-11 | 1988-04-13 | Wiggins Teape Group Ltd | Rope system for papermachine |
DE9207656U1 (de) * | 1992-06-05 | 1992-08-13 | J.M. Voith Gmbh, 7920 Heidenheim | Maschine zur Herstellung einer Faserstoffbahn |
DE4244884C2 (de) * | 1992-06-05 | 2001-11-29 | Voith Paper Patent Gmbh | Maschine zur Herstellung einer Faserstoffbahn |
US5467534A (en) * | 1993-11-10 | 1995-11-21 | Salter; Robert L. | Procedure for drying a paper web and a drying part for a paper machine |
-
1993
- 1993-11-10 US US08/150,449 patent/US5467534A/en not_active Expired - Fee Related
-
1994
- 1994-02-15 DE DE4404717A patent/DE4404717C2/de not_active Expired - Fee Related
- 1994-10-12 AT AT94116045T patent/ATE189015T1/de not_active IP Right Cessation
- 1994-10-12 EP EP94116045A patent/EP0653513B1/de not_active Expired - Lifetime
- 1994-11-08 JP JP6298948A patent/JPH07189161A/ja active Pending
- 1994-11-09 FI FI945280A patent/FI945280A/fi unknown
- 1994-11-09 CA CA002135502A patent/CA2135502A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
JPH07189161A (ja) | 1995-07-25 |
EP0653513A3 (de) | 1996-01-31 |
FI945280A (fi) | 1995-05-11 |
FI945280A0 (fi) | 1994-11-09 |
EP0653513A2 (de) | 1995-05-17 |
ATE189015T1 (de) | 2000-02-15 |
DE4404717C2 (de) | 1994-11-24 |
CA2135502A1 (en) | 1995-05-11 |
DE4404717A1 (de) | 1994-07-21 |
US5467534A (en) | 1995-11-21 |
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