CN102301068A - Device for producing a material web - Google Patents
Device for producing a material web Download PDFInfo
- Publication number
- CN102301068A CN102301068A CN2010800058750A CN201080005875A CN102301068A CN 102301068 A CN102301068 A CN 102301068A CN 2010800058750 A CN2010800058750 A CN 2010800058750A CN 201080005875 A CN201080005875 A CN 201080005875A CN 102301068 A CN102301068 A CN 102301068A
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- CN
- China
- Prior art keywords
- web
- drying
- drying equipment
- section
- press
- 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.)
- Pending
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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
- D21F5/18—Drying webs by hot air
- D21F5/182—Drying webs by hot air through perforated cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/04—Arrangements thereof
- D21F3/045—Arrangements thereof including at least one extended press nip
-
- 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
- D21F5/18—Drying webs by hot air
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Abstract
The invention relates to a drying device (1) for drying a material web (100), in particular a web of paper, cardboard or tissue, which has a top side (101) and a bottom side (102). The drying device (1) comprises at least a first drying section (2) and a second drying section (3), the first drying section (2) extending essentially straight and comprising a first impact flow cover (4) for directly subjecting the top side (101) of the material web (100) to hot drying medium. A first drying screen (20) for guiding the material web (100) through the first drying section (2) is assigned to the bottom side (102) of the material web (100). The second drying section (3) comprises a second impact flow cover (8) for directly subjecting the bottom side (102) of the material web (100) to hot drying medium, wherein a second drying screen (22) for guiding the material web (100) through the second drying section (3) is assigned to the top side (101) of the material web (100) and the second drying screen (22) is guided over at least one support surface (103). The drying device (1) according to the invention is characterized in that the at least one support surface (103) is configured in an air-permeable manner with only few pulsations.
Description
The present invention relates to a kind of drying equipment that is used for dry web, especially paper web, board web or tissue web, this drying equipment has upside and downside.This drying equipment comprises at least one first dryer section and second dryer section, and wherein, first dryer section straight line is basically extended and had and is used for applying the first percussion flow cover (Prallstroemungshaube) of heated drying agent directly for the web upside.The downside of this web is furnished with at this and is used for web guiding first dry net through first dryer section.Second dryer section has one and is used for applying the second percussion flow cover of heated drying agent directly for the web downside, wherein, the upside of web is furnished with one and is used for web guiding is guided at least one bearing-surface through second dry net and second dry net of second dryer section.
These drying equipments are applied in the modern paper machine of high production speed.This highly effective drying device is according to the percussion flow principle
Operation.Be applied in hot-air and strengthen ground dry at this paper web.The importance of this highly effective drying device and dry share increase gradually along with the increase of speed.In drying section subsequently, for the first time before the open draw,, all need to have certain minimum dry weight content at paper web for every kind of paper in order to make paper web have enough intensity and not break with drying.Make that thus highly effective drying length of an interval degree is compared the follow-up traditional drying device with drying constantly to be increased in order to lay the drying section of paper machine.
In Germany Patent document DE102007018378A1, put down in writing a kind of drying equipment by type of the present invention.After press section, the paper web upside in horizontally extending percussion flow drier dry and subsequently (for the dry-web downside) be transferred in the vertically arranged percussion flow drier.Paper web this by idler in two percussion flow driers.
In these known devices, required drying capacity in the time of can increasing machine speed by the percussion flow interval of the first highly effective drying device level that extends and improve.But disadvantageously, the paper web service ability can variation when machine speed is big.This especially is embodied in second dryer section of paper web downside drying in the percussion flow drier.Each dry net by idler in first and second dryer section.At each cylinder place, between dry net and cylinder, can produce the slit that narrows down gradually and broaden thus.This causes producing the pressure pulse that breadth is especially come off from dry net in edge.This especially can cause breadth to be torn and fold when speed is higher.
Therefore, technical problem to be solved by this invention is, a kind of drying equipment is provided, and it can be realized strengthening with effective dry and have the drying capacity of making and the production demand ability of coupling flexibly and economically, guarantee simultaneously when speed is higher paper web have improvement, service ability reliably.
This technical problem solves by the feature of claim 1.Drying equipment is designed for the web that drying has upside and downside, especially paper web, board web or tissue web.This drying equipment comprises at least one first dryer section and second dryer section, and wherein, first dryer section is extended point-blank basically and had first a percussion flow cover that a upside that is used for directly giving web applies the heated drying agent.The downside of web is furnished with one at this and is used for first dry net of web guiding through first dryer section.Second dryer section has second a percussion flow cover that is used for directly applying the heated drying agent to the downside of web, wherein, the upside of web is furnished with one and is used for second dry net of web guiding through second dryer section, and second dry net is guided at least one bearing-surface.Be characterised in that by solution of the present invention, that described at least one bearing-surface is designed to breathe freely and be low pulse.
By realizing that by solution of the present invention the downside of paper web face also can abut on the dry net safely and reliably when fair speed.This is being favourable by the percussion flow drier when dry especially, and web is not guided between two dry nets in the percussion flow drier, and therefore the drier of heat can be directly injected on the downside of web and therefore dry effectively this downside.Design by the low pulse of dry net bearing-surface can not produce the pressure pulse that causes web to come off from dry net.Ventilative bearing-surface provides the suction bearing-surface and therefore web more firmly is fixed on possibility on the dry net.This is especially very important when dry web downside, so that overcome gravity web is fixed on the dry net.
Hot-air and/or steam can be used as drier.
The present invention is greater than 1700m/min, produces particularly advantageous effect during especially greater than the speed of 1800m/min.
By the straight line of first dryer section, drying capacity can the coupling by the first dryer section length adapt to the production needs neatly in its design.This compares can not can realize between longer dry section by big arbitrarily percussion flow drying device on backing roll or the idler pulley." straight line " is interpreted as the straight and/or slight curving trend of dryer section according to the present invention.Slight curving trend has web is stabilized in advantage on the dry net better.Greater than 10 meters, be preferably greater than 15 meters in this radius of curvature.
In a kind of favourable design of the present invention, aspirate at least one bearing-surface.At this, less negative pressure is just enough.This negative pressure can be in 1hPa to 200hPa, especially in the scope of 1hPa to 100hPa.
Also can design by the present invention's first dryer section and to have and the corresponding bearing-surface of the bearing-surface of second dryer section.
Bearing-surface advantageously has punching or boring or perforation.The supporting role that web is good and the stability of low pulse have been realized thus simultaneously.
By the form of implementation of another kind of low pulse, that bearing-surface is designed to is static, along the smooth and/or crooked plate of breadth traffic direction.This project organization cheap for manufacturing cost.
In the preferred practical low pulse form of implementation of another kind, the bearing-surface of second dryer section is made of back-up roll sleeve.Compare described plate, this solution has such advantage, and promptly can not occur relative motion between dry net and bearing-surface also therefore can be owing to friction produces wearing and tearing.Backing roll has roller shell punching, that for example hole.The drying capacity that diameter in 3 meters to 6 meters scopes just is enough to provide enough.
In another kind of practicality form of implementation, the inner surface of Backup Roll Shell is furnished with suction box at least in the subregion that is held by second dry net, and wherein, the diaphragm seal of locating at the suction box beginning is prepended to the winding line (Auflauflinie) of web.Avoid web being lifted and therefore being caused from dry net the problem of service ability thus by the pressure pulse of diaphragm seal generation.Suction box is seen along the breadth traffic direction can be divided into the different section of a plurality of pressure.
Preferred second dryer section is right after after first dryer section, and at this, web is transferred on second dry net from first dry net by the suction district that is arranged in second dry net.
In a kind of practicality Variant Design, the first percussion flow cover and/or the second percussion flow cover are along the breadth traffic direction and/or laterally by the hood-shaped one-tenth of a plurality of branches.
Advantageously, the drying efficiency of the first percussion flow cover and/or the second percussion flow cover is adjusted or is regulated along breadth traffic direction and/or transverse sectional formula ground.
In a kind of form of implementation of practicality, first dry net is also ventilative and low pulse at least one, with the corresponding bearing-surface of bearing-surface of second dry net on guide.
On the other hand, the present invention relates to a kind of paper machine that is used to make web, especially paper web, board web or tissue web, it comprises press section and dry section, and wherein, dry section comprises that at least one is by drying equipment of the present invention.
In a kind of preferred form of implementation, the press section of being made up of the press. nips of at least one lengthening is prepended to by drying equipment of the present invention.This press section is also referred to as single NipcoFlex squeezing.Also can consider to use the press section of forming by two continuous mutually lengthening press. nips of arranging for the paper of particular types.This press section is called tandem Nipcoflex squeezing.The press. nips of these lengthenings preferably is made of the boots formula roller with pair roller respectively, and wherein, paper web is guided between two straps through these press. nips.This two strap can be by two felt or also can be made up of a felt and a smooth ventilative or air-locked belt.
In another kind of form of implementation of the present invention, for the kind of those paper that surface roughness is had high requirements, as supercalendered paper, the press section that has the press. nips of at least one lengthening and be arranged on calendering equipment thereafter is prepended to drying equipment.Calendering equipment is by a cylinder and/or have smooth surface and the belt of the pair roller that is sucked constitutes.At this, web from the lower wire blanket with smooth surface of last press. nips be delivered on the conveyer belt and be delivered on the gas-permeable nets blanket that holds pair roller from here and guiding through the calendering district of calendering equipment.
In the another kind of preferred form of implementation of paper machine, have compact press section and be prepended to drying equipment with the press section that is arranged on calendering equipment thereafter.This calendering equipment is by cylinder and/or have smooth surface and the belt of the pair roller that is sucked constitutes.At this, web from hold center breast roll, that have smooth surface band and be delivered on the conveyer belt and be delivered to from here on the gas-permeable nets blanket that holds calendering equipment pair roller and guiding through the calendering district of calendering equipment.
In the preferred form of implementation of another kind, web is with enclosed traction guiding process press section and through drying equipment.
By solution of the present invention also allow the stable breadth operation when being implemented in production run paper web after tearing or paper machine when putting into operation once more breadth widely pass on.This has only by the bearing-surface of low pulse and could realize reliably.
Other features and advantages of the present invention are by obtaining in the following description of a preferred embodiment with reference to the accompanying drawings.In the accompanying drawings:
Fig. 1 is the first kind of form of implementation that has by the paper machine of drying equipment of the present invention, and this drying equipment has preposition press section,
Fig. 2 is the second kind of form of implementation that has by the paper machine of drying equipment of the present invention, and this drying equipment has the preposition press section that has calendering equipment,
Fig. 3 is the third form of implementation that has by the paper machine of drying equipment of the present invention, and this drying equipment has the preposition press section that has calendering equipment.
Fig. 1 illustrates a kind of form of implementation of paper machine drying equipment 1.This drying equipment is made of first dryer section 2 of slight curving extension and second dryer section 3 of directly joining.Paper web 100 is transferred on the dry net 20 from the conveyer belt 30 in suction roll 5 zones.This dry net 20 is supported by deflector roll 6 in the zone of first dryer section 2.The layout of deflector roll 6 forms one, and to be equivalent to radius be 15 meters polygon traction route.Guide paper web 100 thus reliably.The upside 101 of paper web 100 exposes and is not covered by another net.Therefore, the heated drying agent of ejection can be arrived at paper surface 101 in the clear from percussion flow cover 4.Guide around suction roll 7 at the end of the first dryer section 2 place's paper web 100 and first dry net 20.Ensuing in service, paper web 100 is transferred on second dry net 22.In transport zone, be furnished with suction element, so that paper web 100 is transferred on second dry net 22 from first dry net 20.Suction element also can be realized by the suction district in the idler pulley 10.Second dry net 22 partly holds idler pulley 10, steam heated drying drum 11, suction slewing rollers 12 and another drying drum 13.On this drying drum 13, second dry net 22 separates with paper web and draws back by deflector roll 9.This paper web is directed to next dryer section by open draw.Idler pulley 10 has drum sleeve face 103 boring, that aspirate by the suction box that holds at second dry net 22 in the zone.The downside 102 of paper web 100 is exposed to outer and is not covered by another net.Therefore, the heated drying agent of ejection can unhinderedly arrive paper surface 101 from percussion flow cover 8.Percussion flow cover 8 is separated into two parts in this embodiment.But the project organization of integral type also can.Air volume flow and temperature can be regulated separately in each part.Under the situation that paper web 100 is torn, two cover parts 8 can be opened, so that can make it to fall into mechanical stack for removing paper remnants.For preventing that the breadth on the idler pulley 10 from moving because gravity becomes unstable, the negative pressure in the suction box of idler pulley 10 is 40hpa.
Be equipped with a press section 200 before the drying equipment 1.Paper web 100 transfer to from shaping area on the top felt 50 of first press. nips and with another felt 51 common pilots through boots formula nip 201.This boots formula nip is made of boots formula roller 52 and pair roller 53.Ensuing in service, the bottom felt 51 of paper web from first press. nips 201 unloaded and guide through the second boots formula nip 202 by top felt 40 and by suction roll 44.Subsequently, paper web 100 is transmitted with the 30 bottom bands 41 from second nip 202 and unloads and transfer on the drying equipment 1.
The different project organizations that only are press section 205 of the paper machine among Fig. 2 and paper machine shown in Fig. 1.Press section 205 only is made up of the press. nips 203 of a lengthening and the calendering equipment 300 of a postposition.Paper web unloads and guides through press. nips 203 from forming web 500 by the top felt 40 of press. nips 203, and this press. nips 203 is made of boots formula roller 42 and pair roller 43.Then, paper web is delivered to calendering equipment 300 by conveyer belt 304.Pair roller 302 and a smooth calender roll 301 that this calendering equipment is sucked by one, that held by ventilative fine felt 303 constitute.The upside 101 of this calender roll press polish paper web.
Fig. 3 illustrate combine with another flexible program of press section 206 by drying equipment 1 of the present invention.This press section 206 is made of a so-called compact press section 400 that has three press. nips and a calendering equipment 300 similar to Fig. 2.Compact press section 400 produces the paper web 100 of a bilateral with regard to the paper web slickness.More coarse than downside 102 after squeezing at this upside 101.The press polish by upside 101 in calendering equipment 300 subsequently of the difference of this roughness compensates.
List of numerals
1 drying equipment
2 first dryer section
3 second dryer section
4 first percussion flow covers
5,7 suction rolls
6 deflector rolls
8 second percussion flow covers
9 deflector rolls
10 idler pulleies
11 drying drums
12,13 slewing rollers
14 breadth traffic directions
20 first dry nets
22 second dry nets
30 conveyer belts
31 suction rolls
40,50 felts
41 pressure zones
42,52 boots formula rollers
43,53 pair rollers
44 suction rolls
54 suction rolls
100 webs, paper web
The upside of 101 webs, paper web
The downside of 102 webs, paper web
103 bearing-surfaces
200 press sections
205,206 press sections
201, the press. nips of 202 lengthenings
The press. nips of 203 lengthenings
300 calendering equipment
301 calender rolls
The pair roller of 302 suctions
303 air permeable belts
304 conveyer belts
400 compact press sections
401 suction pressure rollers
402 pressure rollers
403 boots formula pressure rollers
404 breast rolls
405 bottom felts
406 center bands
407 pick up felt
500 forming webs
Claims (15)
1. one kind is used for dry web (100), especially paper web, the drying equipment of board web or tissue web (1), this web (100) has upside (101) and downside (102), this drying equipment (1) comprises at least one first dryer section (2) and second dryer section (3), wherein, described first dryer section (2) straight line is basically extended and is had first a percussion flow cover (4) that the upside (101) that is used for directly giving described web (100) applies the heated drying agent, wherein, the downside (102) of described web (100) is furnished with first dry net (20) that is used for described web (100) guiding described first dryer section of process (2), described second dryer section (3) has the second percussion flow cover (8) that a downside (102) that is used for directly giving described web (100) applies the heated drying agent, wherein, the upside (101) of described web (100) is furnished with one and is used for second dry net (22) of described web (100) guiding through described second dryer section (3), and wherein, described second dry net (22) is gone up guiding at least one bearing-surface (103), it is characterized in that, that described at least one bearing-surface (103) is designed to breathe freely and be low pulse.
2. drying equipment as claimed in claim 1 (1) is characterized in that, aspirates described bearing-surface (103).
3. drying equipment as claimed in claim 1 (1) is characterized in that, described bearing-surface (103) has punching or boring or perforation.
4. as the described drying equipment of one of claim 1 to 3 (1), it is characterized in that that described bearing-surface (103) is designed to is static, along the smooth and/or crooked plate of breadth traffic direction (14).
5. as the described drying equipment of one of claim 1 to 4 (1), it is characterized in that described bearing-surface (103) is made of the roller shell of backing roll (10).
6. drying equipment as claimed in claim 5 (1), it is characterized in that, the roller shell inner surface of described backing roll (10) is furnished with suction box at least in the subregion that is held by described second dry net (22), wherein, described suction box beginning the place diaphragm seal place before the winding line of described web (100).
7. drying equipment as claimed in claim 1 (1) is characterized in that, described second dryer section (3) is right after in described first dryer section (2) afterwards.
8. drying equipment as claimed in claim 1 (1) is characterized in that, the described first percussion flow cover (4) and/or the second percussion flow cover (8) are along breadth traffic direction (14) and/or laterally be made of a plurality of branch covers.
9. as the described drying equipment of one of claim 1 to 8 (1), it is characterized in that the drying efficiency of the described first percussion flow cover (4) and/or the second percussion flow cover (8) is adjusted or regulated along breadth traffic direction (14) and/or transverse sectional formula ground.
10. drying equipment as claimed in claim 1 (1) is characterized in that, described first dry net (20) is ventilative and low pulse at least one, especially by guiding on claim 2,3, one of the 4 described bearing-surfaces.
11. one kind is used to make web (100), especially the paper machine of paper web, board web or tissue web, it comprises a press section (200) and a drying section, it is characterized in that, described drying section comprises that at least one is by the described drying equipment of one of claim 1 to 10 (1).
12. paper machine as claimed in claim 11 is characterized in that, the press section (200) that is made of the press. nips (201,202) of at least one lengthening places described drying equipment (1) before.
13. paper machine as claimed in claim 11 is characterized in that, the press section (200) that has the press. nips (203) of at least one lengthening and be arranged on calendering equipment (300) thereafter places described drying equipment (1) before.
14. paper machine as claimed in claim 11 is characterized in that, the press section (200) that has compact press section (400) and be arranged on calendering equipment (300) thereafter places described drying equipment (1) before.
15., it is characterized in that described web (100) is with enclosed traction guiding process described press section (200) and through described drying equipment (1) as the described paper machine of one of claim 11 to 14.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910000507 DE102009000507A1 (en) | 2009-01-30 | 2009-01-30 | Device for producing a material web |
| DE102009000507.2 | 2009-01-30 | ||
| PCT/EP2010/050428 WO2010086234A1 (en) | 2009-01-30 | 2010-01-15 | Device for producing a material web |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102301068A true CN102301068A (en) | 2011-12-28 |
Family
ID=42306615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800058750A Pending CN102301068A (en) | 2009-01-30 | 2010-01-15 | Device for producing a material web |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2391769B1 (en) |
| CN (1) | CN102301068A (en) |
| DE (1) | DE102009000507A1 (en) |
| WO (1) | WO2010086234A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074091A (en) * | 2013-03-28 | 2014-10-01 | 维美德技术有限公司 | Paper or board making machine for manufacturing high filler content paper or board and method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726388A (en) * | 2013-12-19 | 2014-04-16 | 云南中烟昆船瑞升科技有限公司 | Reconstituted tobacco efficient dehydrating and squeezing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5495678A (en) * | 1993-03-22 | 1996-03-05 | Valmet Paper Machinery, Inc. | Drying module and dryer sections that make use of same, in particular for a high-speed paper machine |
| WO1999064671A1 (en) * | 1998-06-10 | 1999-12-16 | Valmet Corporation | Integrated paper machine |
| WO2001000925A1 (en) * | 1999-06-29 | 2001-01-04 | Valmet-Karlstad Ab | Apparatus and method for making textured tissue paper |
| CN1088482C (en) * | 1995-10-04 | 2002-07-31 | 韦尔梅特公司 | Method and device in a paper machine |
| US6442865B1 (en) * | 1999-07-27 | 2002-09-03 | Voith Sulzer Papiertechnik Patent Gmbh | Drying section |
| US20030019600A1 (en) * | 2001-07-30 | 2003-01-30 | Voith Paper Patent Gmbh | Machine for producing a fibrous material web |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI123824B (en) | 2006-04-19 | 2013-11-15 | Metso Paper Inc | Improved web runnability in a material web machine |
-
2009
- 2009-01-30 DE DE200910000507 patent/DE102009000507A1/en not_active Withdrawn
-
2010
- 2010-01-15 EP EP10700256A patent/EP2391769B1/en not_active Not-in-force
- 2010-01-15 WO PCT/EP2010/050428 patent/WO2010086234A1/en active Application Filing
- 2010-01-15 CN CN2010800058750A patent/CN102301068A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5495678A (en) * | 1993-03-22 | 1996-03-05 | Valmet Paper Machinery, Inc. | Drying module and dryer sections that make use of same, in particular for a high-speed paper machine |
| CN1088482C (en) * | 1995-10-04 | 2002-07-31 | 韦尔梅特公司 | Method and device in a paper machine |
| WO1999064671A1 (en) * | 1998-06-10 | 1999-12-16 | Valmet Corporation | Integrated paper machine |
| WO2001000925A1 (en) * | 1999-06-29 | 2001-01-04 | Valmet-Karlstad Ab | Apparatus and method for making textured tissue paper |
| US6442865B1 (en) * | 1999-07-27 | 2002-09-03 | Voith Sulzer Papiertechnik Patent Gmbh | Drying section |
| US20030019600A1 (en) * | 2001-07-30 | 2003-01-30 | Voith Paper Patent Gmbh | Machine for producing a fibrous material web |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074091A (en) * | 2013-03-28 | 2014-10-01 | 维美德技术有限公司 | Paper or board making machine for manufacturing high filler content paper or board and method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009000507A1 (en) | 2010-08-05 |
| EP2391769A1 (en) | 2011-12-07 |
| WO2010086234A1 (en) | 2010-08-05 |
| EP2391769B1 (en) | 2012-12-19 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111228 |