EP0427218B1 - Système de séchage - Google Patents

Système de séchage Download PDF

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Publication number
EP0427218B1
EP0427218B1 EP19900121252 EP90121252A EP0427218B1 EP 0427218 B1 EP0427218 B1 EP 0427218B1 EP 19900121252 EP19900121252 EP 19900121252 EP 90121252 A EP90121252 A EP 90121252A EP 0427218 B1 EP0427218 B1 EP 0427218B1
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EP
European Patent Office
Prior art keywords
cylinders
drying system
air
screen belt
deflector
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
Application number
EP19900121252
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German (de)
English (en)
Other versions
EP0427218A3 (en
EP0427218A2 (fr
Inventor
Erwin Brunnmair
Alfred Luttenberger
Reinhard Dr. Pinter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Sulzer Papiermaschinen GmbH
Original Assignee
Voith Sulzer Papiermaschinen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0427218A2 publication Critical patent/EP0427218A2/fr
Publication of EP0427218A3 publication Critical patent/EP0427218A3/de
Application granted granted Critical
Publication of EP0427218B1 publication Critical patent/EP0427218B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a drying device for high-speed moving material, in particular paper or fibrous webs, which are expediently from a number of steam-heated cylinders, in particular essentially on the same horizontal plane, and expediently from a series of unheated cylinders, approximately in the spaces between these cylinders , in particular likewise in a deflecting roller mounted either below or above the aforementioned horizontal plane, the jacket of which is perforated and / or provided with grooves, suction of air from these deflecting rollers is provided and these cylinders and the deflecting rollers are covered with a screen belt are equipped and the web of material on the cylinders is between their jacket and the screen belt or the like, while on the deflection rollers the screen belt comes to rest on the jacket of the rollers and the web of material on the outside of the screen belt, w an air-blowing device is provided on the deflecting rollers with air flows directed against their jacket.
  • Such an air bubble device is known from WO-A-8300514.
  • DE-OS 38 28 743 shows, inter alia, a drying group of a paper machine multi-cylinder dryer of the type described in the introduction, in which both deflection rollers, which correspond to the aforementioned guide rollers, and combined blower suction boxes arranged above the deflection rollers are connected to a vacuum generator. These blow-suction boxes are also connected to a pressure generator and have side flanks with nozzle openings through which air is blown under pressure against the screen belt and paper web runs freely guided between the cylinders and the deflecting rollers.
  • somewhat improved drying is achieved through the drying wire because, in particular with regard to the negative pressure applied to the inside of the perforated jacket of the deflecting rollers, the moisture removal is improved.
  • this improvement does not yet adequately meet practical requirements.
  • the loss of drying performance due to the loss of an entire row of cylinders cannot be compensated for by far.
  • the invention is based on a new concept for a high-speed multi-cylinder dryer section, which on the one hand ensures the good and safe guidance of the material, in particular the paper web, and on the other hand avoids the disadvantage of the unsatisfactory drying performance.
  • Movement play is understood to mean a small distance between the blow-out surface of the tidal bubble device facing the jacket of the deflecting roller, which just barely Safety allows the sieve belt and the material web in question to move through in the gap between the air bubble device and the deflecting roller moving with the sieve belt.
  • the air bubble device is preferably provided with a lifting device so that there is no blockage of the intermediate space when the paper web is being fed or when it is torn off.
  • the lifting device can lift the air bladder device on one or both sides completely or partially from the cylinder surface.
  • the guiding effect is additionally improved according to the invention if the distance of the side flanks of the flow installation from the respectively adjacent sieve belt strand increases, in particular continuously, seen in its direction of movement.
  • the resulting diffuser-like expansion of the air flow in the area of the free material web or screen belt runs enables the air flows in the area of the freely moving runs or the free trains of the screen belt or material web to be controlled and good guidance of the material web in to ensure this area, in particular to avoid it being lifted off the screen belt as far as possible.
  • a further improvement according to the invention can act in the same sense, which consists in the fact that the flow installation is at a smaller distance from the wire belt strand running onto the deflection roller than from the wire belt strand running off this roller.
  • the sieve belt it may be expedient to limit the air entrained by the sieve belt in order to avoid excess pressure and thus local lifting of the material web; This can be achieved in that in the region of the back facing away from the jacket of the associated deflecting roller, in particular the upper side, of the flow installation, an air separating device or seal extending into the gap between the flow installation and the up and / or down running belt section is provided.
  • the suction effect of the deflection rollers can be further increased according to the invention if the flow installation on the side facing the jacket of the associated deflection roller is sealed at its edges with respect to this jacket.
  • Material web guidance or suction effect and drying effect can, according to the invention, also be made more favorable if the deflecting roller (s) is or are displaced from the plane of symmetry of the spaces between the cylinders to the screen belt run running onto the deflecting roller (s).
  • a further increase in the drying capacity can be achieved if (one) further air blower devices or (a) blow box are provided on the steam-heated cylinders, which also have the introduction of fresh air into the drying device and advantageously have (one) air injection opening (s) that is located in the space between adjacent cylinders on the side remote from the associated deflecting roller near one or both cylinders.
  • the steam-heated cylinders are designed as high-performance steel cylinders according to AT-PS 387 248 or the Austrian patent application A 1512/87.
  • the air-blowing devices for the deflecting rollers are connected to an air-guiding circuit system which is separate from the rest of the ventilation system of the drying device.
  • a common ventilation system is provided for the drying device, the interior space (s) of the flow installation (s) and the deflection roller (s) together on (a) vacuum generator are connected and if the air bubble device (s) and, if appropriate, the further air bubble device (s) are fed together via an air heating device.
  • the diameter of the unheated deflection rollers connected to a vacuum generator is smaller than the diameter of the steam-heated cylinders, e.g. the diameter of the deflecting rollers is approximately 1000 - 1500 mm, the diameter of these cylinders is approximately 1800 mm.
  • Fig. 1 shows a dryer group with an air bubble device according to the invention and a flow installation according to the invention, wherein the steam-heated cylinders are arranged higher than the deflection rollers.
  • Fig. 2 shows a similar drying device, but the arrangement of the cylinders and the deflecting rollers is reversed.
  • FIG. 3 illustrates another embodiment variant with an additional air bladder device and a further variant of the air circuit.
  • FIGS. 4 and 5 show configurations in which only the air bubble device according to the invention or one with an additional air bubble device are provided in the upper region of the steam-heated cylinders.
  • FIG. 6 and 7 show details in the area of the deflecting rollers on an enlarged scale compared to the aforementioned figures, namely FIG. 6 in front view, FIG. 7 as section A-A through FIG. 6.
  • a first dryer group of the dryer section of a paper machine or a part of such a group. It is about single-belt guide groups.
  • the press section of the paper machine for practical versions.
  • the material or paper web is expediently conveyed from the press section to the dryer section in a closed guide.
  • one or more single-wire conveyor guide groups - as shown below - can be provided in the dryer section, followed by one or more two-wire conveyor guide group (s) if necessary.
  • a drying group or drying device for material, in particular paper or fibrous webs moving at high speed is first described, specifically with an arrangement with drying cylinders 3 at the top and deflection rollers 2 at the bottom; in a corresponding form, however, it also applies to the reverse arrangement according to FIG. 2 with drying cylinders 3 arranged at the bottom, whereby it may be expedient to move a part of the drying groups with the cylinders on top according to FIG. 1 and a part with cylinders below within a drying section Fig. 2 execute.
  • a cylinder heated with a heat transfer medium, in particular steam, for paper machines has a metallic core cylinder provided on its surface with a number of grooves, preferably parallel to one another and optionally, in particular partly, parallel to its axis, and the cylinder is heated by Supply of the heat transfer medium, in particular steam, into the grooves.
  • the grooves are, for example, machined into the surface of the core cylinder, and a metallic cylindrical outer jacket is drawn onto the core cylinder in a metal-contacting manner, in particular shrink-fit, with the formation of pressure spaces between it and the core cylinder, which can be welded to the core cylinder at its edges, and that Grooves have a continuously - preferably uniformly - changing cross-section over at least part of their length.
  • the lower deflections of the screen belt 15 or the material or paper web 14 are not formed by drying cylinders, as is usually the case, but deflection or guide rollers 2, the diameter of which is somewhat smaller than that of the drying cylinder 3. Typical dimensions are, for example, 1800 mm in diameter for the drying cylinder 3 and 1000 - 1500 mm in diameter for the deflection rollers 2 below.
  • These deflection rollers are provided with a suction device 12 and have a perforated, preferably perforated jacket 13, so that inside the roller 2 A vacuum or negative pressure is created, and thus the material or paper web 14 is held in place by the negative pressure on the deflecting roller in its lower loop 14 '.
  • the perforation of the deflecting rollers 2 can be distributed unevenly over their outer surface.
  • a larger number of perforation openings or bores can be present in the region of the edge of the material web than in the central region of the web or of the roll shell.
  • An air-blowing device 1 is arranged below these deflecting rollers, which causes intensive drying in this area by blowing hot air onto the material or paper web 14, 14 '. This makes it compared to a conventional dryer section - because of the missing Heating of the rollers 2 - reduced drying capacity compensated, or even increases compared to a conventional dryer section can be achieved.
  • the material web 14 is guided in the entire area of the drying group through the endless, individual screen belt 15, which is guided in loops one after the other around the cylinders 3 and the deflection rollers 2.
  • the shrinkage of the material web, in particular paper web 14, takes place increasingly in the part in which the evaporation of the water takes place. This applies in particular to that free train 14 ′′ which is then passed through a drying cylinder 3 until it hits the next deflecting roller 2. In order to reduce the shrinkage in this area, it is expedient to make this free pull 14 ′′ particularly short, while the free pull 14 ′′ ′′ following the deflecting roller 3 can be somewhat longer.
  • a flow installation 4 is provided above the perforated deflecting rollers 2, which essentially serves two purposes: on the one hand, this covers part of the circumference of the perforated deflecting roller 2 that is not in contact with the material web or paper, thus preventing the increased intake of air in this area.
  • This has the advantage that the amount of air sucked in is greatly reduced and that the vacuum or negative pressure in the suction deflecting rollers 2 can be maintained with smaller amounts of air sucked out, which in particular brings energetic advantages.
  • seals 8, 8 ′ are arranged between the aforementioned flow installation 4 and the suction deflection rollers 2 in order to prevent air from penetrating. This can be done either by scraper-like sealing strips, by brushes or similar sealing devices.
  • the second purpose of this flow installation 4 relates to the control of the air flows in the area of the free material or paper runs 14 ′′, 14 ′′ ′′ (trains) and thus the guidance of the material, in particular paper web 14 in this area .
  • the distances between the flow installation 4, ie between its completely closed side flanks 4 ', 4''and the sieve belt 15 on the downward run and on the upward run free train or train 15', 15 '' differ chosen large.
  • the flow installation 4 is not carried out parallel to the drying wire 15 or 15 'or 15'', but in an oblique arrangement, so that a diffuser-like expansion for the air flow occurs.
  • the arrangement of a seal 9 against the sieve belt 15 ' is advantageously provided on the top surface 4''' of the flow installation 4.
  • This arrangement makes it possible to limit the air entrained by the sieve belt 15, 15 ', so that in the part where the Screen belt and the material web run onto the lower deflection roller 2, no overpressure results; such an overpressure could otherwise lead to a local lifting of the material web 14. That favorable effect is further supported by the fact that a part of the air is sucked into the part of the deflecting roller 2 that remains free of the screen belt 15 or the material web 14, so that no disruptive excess pressure can build up.
  • suction from the interior of the flow installation 4 is also provided according to the invention.
  • the flow installation has an undivided interior, which is connected to a vacuum generator, in particular a fan.
  • the false air passing between the flow installation 4 and the deflecting roller 2 can thus also be removed, or a simpler design of the seals 8, 8 'is possible, since appropriate leakage air quantities can be permitted.
  • the entire flow installation 4 serves as a suction box.
  • a combination of the air blowing device 1 and the flow installation 4 on the suction deflecting roller 2 is preferred.
  • the arrangement of the roller 2 is favorable not eccentric or shifted below the middle of the space between two drying cylinders 3.
  • the arrangement of the flow installation 4 advantageously takes place at different distances from the 15 '' and 15 '' drying sieve 15 running up.
  • the boundary walls 4 ', 4''of the flow installation 4 do not run parallel, but rather at a slight angle to the drying sieve 15', 15 '' therein Areas.
  • the seal 8, 8 'between the flow installation 4 and the deflection roller 2 is recommended.
  • the Air separation device 9 on the upper edge of the flow installation 4 favors the material web guidance.
  • An additional suction 10 of air from the flow installation 4 (see also FIG. 7! Favors the drying effect and the material guidance.
  • the combination with an air blowing device 11 on the cylinders 3 is also recommended.
  • the combination of high-performance steel cylinders with suction deflecting rollers 2 and ventilation systems (for example blow boxes 11 (FIG. 3) or blow boxes 18 (FIG. 5)) can also be favorable.
  • Fig. 2 shows schematically a drying group which is constructed essentially like the one shown in Fig. 1, but with an arrangement rotated by 180 °, i.e. with a row of cylinders 3, the level of which is below the level of the row of deflection rollers 2.
  • the flow internals 4 and the bladder devices 1 are interchanged accordingly in their position.
  • Gif. 2 also reveals the air circuit, for which reference is made to the lines ending with arrows, which indicates the air movements.
  • 19 is an air heater
  • 20, 21, 23 and 24 are fans
  • 22 is a heat exchanger.
  • the air bubble devices 1 for the deflecting rollers 2 are connected to an air-guiding circuit system which is separate from the rest of the ventilation system of the drying device.
  • FIG. 3 shows a further variant, in particular with regard to the air flow, the direction of which was again illustrated by arrows.
  • An additional air bubble device 11 on a steam-heated cylinder 3 is provided here.
  • Fans 20, 23 and 24 are again available, which are designed as suction or pressure blowers depending on their task.
  • a common ventilation system is provided for the drying device, the interior space (s) of the flow installation (s) 4 and the deflection roller (s) 2 being connected together to (a) vacuum generator 24 and the air blower device (s) ) 1 and optionally the further air bubble device (s) 11 are fed together via an air heating device 19.
  • FIG. 4 and 5 show simplified arrangements, in particular the flow installation is missing.
  • the air bubble devices 1 are, however, provided in both arrangements.
  • the other existing parts of the plant were given the same reference numerals as the previous example illustrations.
  • additional drying devices 18 can be arranged in the area of the upper cylinders 3, such as special blow boxes, which reinforce the drying of the material or paper web by blowing hot air through the screen belt 15. These blow boxes at the top also serve to introduce the fresh air into the dry patient.
  • At 26 is also a suction fan, at 27 a pressure fan. Arrows again show the air movement.
  • Fig. 6 shows an enlarged section of the dryer section.
  • the guidance of the paper web 14 and the drying wire 15 as well as the flow installation 4 or its boundary walls 4 ', 4' 'and 4' ''.
  • the seal 9 against the screen belt and the seals 8, 8 'against the deflection roller 2 are shown by way of example.
  • FIG. 7 illustrates the section A-A according to FIG. 6.
  • the flow installation 4 with the suction 10 and the seals 8 ′ is shown schematically.

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  • Drying Of Solid Materials (AREA)
  • Paper (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Details Of Garments (AREA)

Claims (14)

  1. Dispositif de séchage de bandes de matière déplacées à grande vitesse, en particulier de bandes de papier ou d'une pâte fibreuse (14), qui est avantageusement constitué d'une série de cylindres (3) chauffés à la vapeur, se trouvant en particulier sensiblement sur le même plan horizontal et avantageusement d'une série de rouleaux de renvoi (2) non chauffés, se trouvant dans les espaces intermédiaires entre ces cylindres (3), montés en particulier aussi dans un plan horizontal situé au-dessus ou au-dessous du plan horizontal précité, rouleaux de renvoi dont l'enveloppe est perforée et/ou est pourvue de rainures, une aspiration d'air à partir de ces rouleaux de renvoi (2) étant prévue et ces cylindres (3) et les rouleaux de renvoi (2) étant équipés d'un tamis sans fin et la bande de matière se trouvant sur les cylindres, entre leur enveloppe et le tamis sans fin, tandis que sur les rouleaux de renvoi le tamis sans fin (15) se trouve sur l'enveloppe des rouleaux et la bande de matière à l'extérieur du tamis sans fin (15), un dispositif de soufflage d'air (1) étant prévu sur les rouleaux de renvoi (2) avec des flux d'air dirigés vers leur enveloppe, caractérisé
       en ce que le dispositif de soufflage d'air (1) entoure en partie seulement l'enveloppe du rouleau de renvoi (2), en contact avec le tamis sans fin ou similaire, dans la portion éloignée des cylindres (3) et entoure totalement avec un jeu de déplacement l'enveloppe du rouleau de renvoi (2), en contact avec le tamis sans fin ou similaire, dans la partie guidant le tamis sans fin et la bande de matière vers le cylindre (3) suivant.
  2. Dispositif de séchage selon la revendication 1, caractérisé par un accessoire d'écoulement (4) guidant en particulier le flux d'air et donc la bande de matière, prévu dans les espaces intermédiaires des cylindres, entre les enveloppes du(des) cylindre(s) et du(des) rouleau(x) de renvoi (2) entourés avec un jeu de déplacement par le dispositif de soufflage d'air, principalement dans la région de leur enveloppe en contact avec le tamis sans fin ou similaire, sur la partie de l'enveloppe du rouleau de renvoi (2) non en contact avec le tamis sans fin.
  3. Dispositif de séchage selon la revendication 2, caractérisé en ce que l'accessoire d'écoulement présente des flancs latéraux totalement fermés, tournés vers le brin de tamis sans fin voisin, et possède un volume intérieur non partagé, qui communique avantageusement avec un générateur de dépression.
  4. Dispositif de séchage selon la revendication 2 ou 3, caractérisé en ce que la distance entre les flancs latéraux de l'accessoire d'écoulement et le brin de tamis sans fin voisin, augmente en partie constamment, dans son sens de déplacement.
  5. Dispositif de séchage selon l'une des revendications 2 à 4, caractérisé en ce que l'accessoire d'écoulement présente une plus petite distance par rapport au brin de tamis sans fin arrivant sur le rouleau de renvoi que par rapport au brin de tamis sans fin partant de ce rouleau.
  6. Dispositif de séchage selon l'une des revendications 2 à 5, caractérisé en ce que dans la région du dos tourné à l'opposé de l'enveloppe du rouleau de renvoi correspondant en particulier de la face supérieure de l'accessoire d'écoulement, il est prévu un dispositif de séparation d'air (9) ou une garniture d'étanchéité, s'étendant dans la fente située entre l'accessoire d'écoulement et le brin de tamis sans fin arrivant et/ou partant.
  7. Dispositif de séchage selon l'une des revendications 2 à 6, caractérisé en ce que l'accessoire d'écoulement est rendu étanche sur le côté tourné vers l'enveloppe du rouleau de renvoi correspondant, sur ses bords, par rapport à cette enveloppe.
  8. Dispositif de séchage selon l'une des revendications 1 à 7, caractérisé en ce que le(s) rouleau(x) de renvoi est (sont) déplacé(s) du plan de symétrie des espaces intermédiaires des cylindres vers le brin de tamis sans fin arrivant sur le(s) rouleau(x) de renvoi.
  9. Dispositif de séchage selon l'une des revendications 1 à 8, caractérisé en ce que sur les cylindres (3) chauffes à la vapeur sont prévus (un) d'autres dispositif(s) de soufflage d'air (11) ou un (des) caisson(s) de soufflage, qui servent aussi à introduire de l'air frais dans le dispositif de chauffage et qui possède(nt) avantageusement (un) des orifice(s) de soufflage d'air, qui se trouve(nt) dans l'espace intermédiaire compris entre des cylindres voisins, sur le côté éloigné du rouleau de renvoi correspondant, à proximité de l'un ou des deux cylindres.
  10. Dispositif de séchage selon l'une des revendications 1 à 9, caractérisé en ce que les cylindres (12) chauffés à la vapeur sont des cylindres d'acier de haute performance.
  11. Dispositif de séchage selon l'une des revendications 1 à 10, caractérisé en ce que les dispositifs de soufflage d'air (1) pour les rouleaux de renvoi (2) sont raccordés à un système de circuit de transport d'air, qui est séparé du reste du système d'aération du dispositif de séchage (figure 2).
  12. Dispositif de séchage selon l'une des revendications 1 à 10, caractérisé en ce que pour le dispositif de séchage il est prévu un système d'aération commun, le ou les volume(s) intérieur(s) du (des) accessoire(s) d'écoulement (4) et le (les) rouleau(x) de renvoi (2) étant raccordés à (un) des générateurs de dépression (24) et en ce que le (les) dispositifs de soufflage d'air (1) ainsi qu'éventuellement l'autre (les autres) dispositif(s) de soufflage d'air (11) sont alimentés conjointement par un dispositif de chauffage d'air (19) (figure 3).
  13. Dispositif de séchage selon l'une des revendications 1 à 12, caractérisé en ce que le dispositif de soufflage d'air (1) peut être soulevé sur un ou les deux côtés totalement ou partiellement de la surface des cylindres.
  14. Dispositif de séchage selon l'une des revendications 1 à 13, caractérisé en ce que le diamètre des rouleaux d'envoi (2) non chauffés, reliés à un générateur de dépression, est inférieur au diamètre des cylindres (3) chauffés à la vapeur, par exemple le diamètre des rouleaux de renvoi (2) est compris entre 1 000 et 1 500 mm, le diamètre de ces cylindres (3) est environ égal à 1 800 mm.
EP19900121252 1989-11-10 1990-11-07 Système de séchage Expired - Lifetime EP0427218B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2581/89 1989-11-10
AT258189A AT394063B (de) 1989-11-10 1989-11-10 Trocknungsvorrichtung

Publications (3)

Publication Number Publication Date
EP0427218A2 EP0427218A2 (fr) 1991-05-15
EP0427218A3 EP0427218A3 (en) 1991-10-23
EP0427218B1 true EP0427218B1 (fr) 1995-08-09

Family

ID=3536865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900121252 Expired - Lifetime EP0427218B1 (fr) 1989-11-10 1990-11-07 Système de séchage

Country Status (5)

Country Link
EP (1) EP0427218B1 (fr)
AT (1) AT394063B (fr)
DE (1) DE59009496D1 (fr)
ES (1) ES2076278T3 (fr)
NO (1) NO179264C (fr)

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DE19752562A1 (de) * 1997-09-29 1999-04-01 Voith Sulzer Papiertech Patent Maschine zur Herstellung oder Bearbeitung einer Materialbahn
US6101735A (en) * 1997-04-22 2000-08-15 Valmet Corporation Dryer section in a paper machine in which impingement and/or ventilation hoods are used

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FI103999B (fi) * 1997-04-22 1999-10-29 Valmet Corp Kuivatusyksikkö ja niitä soveltava kuivatusosa
EP0911445A3 (fr) * 1997-09-29 2000-04-26 Voith Sulzer Papiertechnik Patent GmbH Appareil pour la fabrication ou le traitement d'un matériau en bande
FI108053B (fi) 1997-10-03 2001-11-15 Metso Paper Inc Menetelmä ja laite paperikoneen/kartonkikoneen kuivatusosassa
FI104000B (fi) * 1998-04-03 1999-10-29 Valmet Corp Telan, sylinterin tai vastaavan ympärille sovitettu päällepuhallusjärjestelmä paperikoneen tai vastaavan kuivatusosassa
DE102004023321A1 (de) 2004-05-07 2005-11-24 Voith Paper Patent Gmbh Trockenpartie in einer Maschine zur Herstellung einer Faserstoffbahn
CZ301096B6 (cs) * 2004-06-24 2009-11-04 Konfršt@Václav Elektrický rotacní stroj
DE102005051658A1 (de) 2005-10-28 2007-05-03 Voith Patent Gmbh Trocknungsanordnung
DE102009027609A1 (de) * 2009-07-10 2011-01-13 Voith Patent Gmbh Vorrichtung zur Herstellung einer Materialbahn

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DE3668927D1 (de) * 1986-04-08 1990-03-15 Beloit Corp Blaskasten fuer trockner.
AT390975B (de) * 1987-06-15 1990-07-25 Andritz Ag Maschf Vorrichtung mit einer mit einem waermetraegermedium beheizten arbeitsflaeche
FI80491C (fi) * 1987-09-02 1990-06-11 Valmet Paper Machinery Inc Foerfarande och torkningsgrupp i maongcylindertorken av en pappersmaskin.
DE3910600C2 (de) * 1989-04-01 1993-10-07 Voith Gmbh J M Ein-Sieb-Trockengruppe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6101735A (en) * 1997-04-22 2000-08-15 Valmet Corporation Dryer section in a paper machine in which impingement and/or ventilation hoods are used
DE19752562A1 (de) * 1997-09-29 1999-04-01 Voith Sulzer Papiertech Patent Maschine zur Herstellung oder Bearbeitung einer Materialbahn

Also Published As

Publication number Publication date
AT394063B (de) 1992-01-27
EP0427218A3 (en) 1991-10-23
DE59009496D1 (de) 1995-09-14
ES2076278T3 (es) 1995-11-01
NO904886L (no) 1991-05-13
NO904886D0 (no) 1990-11-09
ATA258189A (de) 1991-07-15
NO179264B (no) 1996-05-28
EP0427218A2 (fr) 1991-05-15
NO179264C (no) 1996-09-04

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