EP3540120B1 - Pressenpartie - Google Patents
Pressenpartie Download PDFInfo
- Publication number
- EP3540120B1 EP3540120B1 EP18209366.6A EP18209366A EP3540120B1 EP 3540120 B1 EP3540120 B1 EP 3540120B1 EP 18209366 A EP18209366 A EP 18209366A EP 3540120 B1 EP3540120 B1 EP 3540120B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press
- uprights
- press section
- section according
- rolls
- 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
Links
- 125000006850 spacer group Chemical group 0.000 claims description 14
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 description 5
- 238000009432 framing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- D21F7/001—Wire-changing arrangements
Definitions
- the invention relates to a press section for dewatering a paper, cardboard or other fibrous web with at least two press nips formed between three press rollers, through which the fibrous web is guided together with at least one continuously revolving belt and a frame for supporting these press rollers, which is formed by a support structure that extends in the longitudinal direction on the drive side and the driver side, each of which comprises at least one upstream and one downstream of these press rolls in the direction of web travel, these uprights being connected via at least one cross member each running between the drive and driver side , with a longitudinal beam extending between the upstream and downstream of these press rollers on the drive and driver side and not connected to any cross beam.
- press sections are already known from the prior art.
- the document DE 3541943 A1 shows a press section with a compact press, which comprises four press rolls to form three press nips.
- the compact press is arranged on the drive side and the driver's side between two frame supports.
- intermediate posts oriented in the longitudinal direction are connected to the frame supports via a joint and an intermediate piece between the frame supports.
- the document EP1637648 A1 discloses a press section with a support structure arranged on the drive side and the driver side, in which the press rolls of the press section are mounted.
- the supporting structures are made in one piece.
- the essential components of a paper machine are a headbox, a wire section on which the web is formed, a downstream press section and an adjoining dryer section with a roller apparatus.
- the press section has a plurality of rollers which are arranged in various configurations relative to one another and which form one or more press nips with one another.
- An essential part of the press section are belts, in particular felt belts, which are passed through the press nips together with the still moist paper web and absorb water there. The water stored in the felt is released again at another point.
- the press section has a framing. This includes a supporting structure on the drive side as well as on the driver's side. The rollers mentioned are stored in the supporting structures.
- the belts are exposed to high levels of wear. They therefore have to be replaced frequently. Removing the worn tape is problem-free because it can be cut.
- the ends of the belt can be connected via a transverse seam after they have been inserted into the press section.
- a new tape is pulled on, especially if it is an endless tape.
- a so-called spacer has to be removed from this supporting structure so that the rollers are temporarily freely cantilevered in the other supporting structure - so-called cantilever principle.
- the spacer is reinserted into the relevant supporting structure so that the machine can be started up again with the new tape.
- the object of the invention is to create a stable frame for a press section with as little effort as possible.
- the object was achieved in that the longitudinal member runs over these stands and is supported on these stands.
- These press rolls are mounted exclusively on or on the two relatively simply constructed, vertical uprights, although further uprights can also be present, especially if there are more than three press rolls.
- the connection of the uprights on the driver and drive side via the cross beams ensures a very stable and compact structure.
- the stability of the respective stand construction can be increased even further via the longitudinal beams without these being connected to one another via a separate cross beam.
- guide rollers for guiding the belts can be stored between the two side members.
- the middle of the three press rolls is often not wrapped by any belt. Furthermore, the dewatering performance of the press section can be increased even further if the first of the three press rolls in the web running direction forms an upstream press nip with a fourth press roll.
- At least one cross member should carry a catwalk running between the driver and drive side.
- the supporting structure does not have to have any spacers, which has a positive effect on the structure and stability.
- the two uprights are firmly connected to the respective longitudinal beam for a stable and compact construction.
- the tapes are in endless form, they must be pre-draped before they are drawn in.
- the cross members are used as cantilever beams in order to enable the movement.
- the support structure on at least one side of the machine has several removable spacers which are advantageously only present between elements of the uprights and between uprights and longitudinal members.
- the side member of the corresponding machine side can be detached from the respective stand at one end and thus the necessary free space for inserting the tape between the side member and stand be created.
- the stable position of the side member is ensured even without a cross member via the connection to the stand at the other end of the side member.
- the improved stability reduces the risk of natural oscillation in the frame. This has a positive effect on the operation of the paper machine and on the quality properties of the paper web.
- the press section is preceded by a wire section for sheet formation and a dryer section for drying.
- the press section has four press rollers 2, 3, 4, 5, each pair forming a total of three press nips through which the fibrous web 1 is guided together with at least one water-absorbing, endlessly rotating belt 6, 7, 8 in the form of a press felt. Outside the press nips, the belts 6, 7, 8 are deflected via guide rollers 17.
- a first belt 7 running over the fibrous web 1 takes over the fibrous web 1 from a forming wire 20 of the upstream former and guides it with a lower belt 6 through the first press nip between the press rollers 2, 3. Then the fibrous web 1, together with the upper belt 7, wraps around the upper press roll 3 of the first press nip up to the second press nip between the press rolls 3 and 4. After the second press nip, the fibrous web 1 wraps around the upper press roll 4 of this press nip, which is not wrapped by any belt, up to the third Press nip through which an upper belt 8 is then passed next to the fibrous web 1.
- the fibrous web 1 wraps around the lower press roll 4 of the third press nip until it is transferred to a drying wire 21 in the following drying section.
- the fibrous web 1 is supported by a drying wire 21 in each case and is guided alternately in a meandering manner over guide rollers and heated drying cylinders 22.
- the frame for mounting the press rollers 2,3,4,5 is formed by a support structure extending in the longitudinal direction on the drive side and the driver side of the paper machine.
- This support structure comprises in each case a vertical stand 10, 11 arranged in front of the web running direction 9 and one after the press rollers 2, 3, 4, 5.
- the first uprights 10 on both sides of the machine in the web running direction 9 are connected via two and the following uprights 11 only via one cross member 13, 14, 15 running between the drive and driver side.
- one of the two cross members 13, 14 of the first upright 10 carries a catwalk 18 running between the driver and drive side, which improves the accessibility of the press section for the operating and service personnel.
- the first 10 and last uprights 11 in the direction of web travel 9 are each connected to one another by means of a longitudinal member 16 extending between and over them.
- This longitudinal member 16 is supported on these uprights 10, 11 and can increase the stability of the frame even without cross members 13, 14, 15.
- some of the guide rollers 17 of the two upper belts 7, 8 are mounted on this longitudinal member 16.
- a further third upright 12 which carries the lower press roller 4 of the third press nip, which is not wrapped by any band.
- the supporting structure of the frame on each side of the machine is made in one piece. Even if the support structure is made up of several parts, in particular the uprights 10,11,12, the longitudinal 16 and the cross members 13,14,15, these parts are rigidly connected to one another (for example by screw connections) that the relevant Structure has the same rigidity as if it were made of a single part.
- the chair is on the driver's side Figure 1 interrupted by several spacers 19. These spacers 19 are provided between parts of the first 10 and the last stand 11 and between these stands 10, 11 and the longitudinal beam 16.
- cross members 13, 14, 15 are used here as cantilever beams.
- the cantilever supports are fixed on the drive side by means of tie rods and, after the spacers 19 have been removed on the driver's side, each carry a part of the frame, in particular a stand 10, 11. If the spacer 19 is removed between the longitudinal beam 16 and a stand 10, 11, the longitudinal beam 16 remains stably fixed via the connection to the other stand 11, 10.
- the corresponding, endless belt 6, 7, 8 can be inserted through the free spaces thus created on the driver's side and looped around the respective press roller 2, 3, 4, 5.
Landscapes
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018106122.6A DE102018106122A1 (de) | 2018-03-16 | 2018-03-16 | Pressenpartie |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3540120A1 EP3540120A1 (de) | 2019-09-18 |
EP3540120B1 true EP3540120B1 (de) | 2020-10-28 |
Family
ID=64564599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18209366.6A Active EP3540120B1 (de) | 2018-03-16 | 2018-11-30 | Pressenpartie |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3540120B1 (zh) |
CN (1) | CN110273317B (zh) |
DE (1) | DE102018106122A1 (zh) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI70951C (fi) * | 1984-11-29 | 1999-05-19 | Valmet Oy | Menetelmä paperikoneen puristinosassa kudosten ja telojen vaihtamiseks i sekä menetelmää soveltava puristinosan runkorakenne |
DE102004046061A1 (de) * | 2004-09-21 | 2006-03-23 | Voith Paper Patent Gmbh | Maschine zum Erzeugen einer Bahn aus Papier oder Karton oder einem anderen flächigen Material |
FI118858B (fi) * | 2005-09-30 | 2008-04-15 | Metso Paper Inc | Järjestelmä paperikoneen osan värähtelyiden vaimentamiseksi ja estämiseksi |
DE102006028419A1 (de) * | 2006-06-21 | 2007-12-27 | Voith Patent Gmbh | Maschinenstuhlung |
DE102006028417A1 (de) * | 2006-06-21 | 2007-12-27 | Voith Patent Gmbh | Maschinenstuhlung |
DE102008000151A1 (de) * | 2008-01-25 | 2009-07-30 | Voith Patent Gmbh | Vorrichtung zur Herstellung und/oder Behandlung einer Faserstoffbahn |
CN201390918Y (zh) * | 2009-04-03 | 2010-01-27 | 潍坊凯信机械有限公司 | 浆板机用夹网成型器 |
CN205242168U (zh) * | 2015-12-21 | 2016-05-18 | 汕头市龙湖区粤安纸业有限公司 | 一种造纸机网部转移压榨装置 |
DE102016201338A1 (de) * | 2016-01-29 | 2017-08-03 | Voith Patent Gmbh | Presse |
FI127017B (fi) * | 2016-03-22 | 2017-09-29 | Valmet Technologies Oy | Liikutusrunkorakenne kuiturainakoneen puristimen vastatelaa varten |
-
2018
- 2018-03-16 DE DE102018106122.6A patent/DE102018106122A1/de active Pending
- 2018-11-30 EP EP18209366.6A patent/EP3540120B1/de active Active
-
2019
- 2019-01-04 CN CN201910007956.7A patent/CN110273317B/zh active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
CN110273317A (zh) | 2019-09-24 |
CN110273317B (zh) | 2023-02-17 |
EP3540120A1 (de) | 2019-09-18 |
DE102018106122A1 (de) | 2019-09-19 |
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