EP1279765B1 - Method for transfering a fibrous web and machine for producing a fibrous web - Google Patents

Method for transfering a fibrous web and machine for producing a fibrous web Download PDF

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Publication number
EP1279765B1
EP1279765B1 EP02007873A EP02007873A EP1279765B1 EP 1279765 B1 EP1279765 B1 EP 1279765B1 EP 02007873 A EP02007873 A EP 02007873A EP 02007873 A EP02007873 A EP 02007873A EP 1279765 B1 EP1279765 B1 EP 1279765B1
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EP
European Patent Office
Prior art keywords
pulper
web
scoop
press
endless belt
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 - Fee Related
Application number
EP02007873A
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German (de)
French (fr)
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EP1279765A1 (en
Inventor
Wolfgang Mayer
Ralf Rziha
Herbert Bosch
Manfred Kikowatz
Rainer Müller
Harald Sternitzke
Christian Liebrecht
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Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
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Publication date
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Publication of EP1279765A1 publication Critical patent/EP1279765A1/en
Application granted granted Critical
Publication of EP1279765B1 publication Critical patent/EP1279765B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • 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
    • D21F7/04—Paper-break control devices

Definitions

  • the invention relates to a method for operating a the production of a fibrous web, in particular paper or board web, serving machine in which the fibrous web is taken on a running through the last nip of the press section endless belt in the dryer section, the endless belt for its cleaning and Conditioning is sprayed with water, the spray is scraped by a scraper from the endless belt and the web transfer process occurring fiber material is collected in a pulper. It further relates to a corresponding machine for producing such a fibrous web.
  • the aim of the invention is therefore to provide an improved method and an improved machine of the type mentioned above, which satisfy the most cost effective and effective manner and in particular the requirements specified above.
  • This object is achieved according to the invention by a method for operating a the production of a fibrous web, in particular paper or board web, serving machine in which the fibrous web is taken over by a running through the last Preßnip the press section endless belt in the dryer section, the endless Strip is sprayed with water for its cleaning and conditioning, the spray water is scrape off from the endless belt by means of a scraper and pulp material collected during the web transfer process is collected in a pulper, and an adjustable blade is used, and this blade is between one in the area between the press section, Pulper and dryer section lying catching and sealing position in which it absorbs the accumulated during normal operation splashing and the dryer section opposite the press section seals, ie prevents the formation of air currents over the pulper, and a release position is adjusted, in which it releases the pulper for the resulting in the web transfer process fiber material and allows the withdrawal of entrained at the track tee especially on the first cylinder of the drying section air.
  • a pivotable blade is preferably used.
  • the pulper thus receives e.g. Cylinder swiveling bucket, which collects the accumulated spray water during normal operation and "seals" the dryer section opposite the press section.
  • the blade In MatterFloating or tee-off operation on the first cylinder, the blade is e.g. pivoted, whereby the pulper is opened and a deduction of towed at the railway tee air is enabled.
  • a blade provided with at least one water inlet or port and at least one water outlet, preferably a plurality of water outlet bores, is used.
  • the blade should therefore in particular offer the possibility of rinsing off any remaining paper with water if necessary, which is possible, for example, via a water connection and water outlet bores.
  • an endless belt may be provided in particular a press belt or a felt.
  • a separate catwalk introduced, preferably pivoted. This catwalk is adjusted or pivoted, for example via hand winches and / or the like.
  • a machine for producing a fibrous web in particular paper or board web, in which the fibrous web is taken from a running through the last Preßnip the press section endless belt in the dryer section, which for its cleaning and conditioning with Sprayed water is applied and the scraper is associated, and is collected in the web transfer process resulting pulp material in a pulper, wherein a blade is provided, which lies between a lying between the press section, pulper and dryer section collecting and sealing position in which they during normal operation accumulating spray water and the drying section seals against the press section, ie prevents the formation of air currents over the pulper, and a release position is adjustable, in which it releases the pulper for the fiber material obtained in the web transfer operation and allows the withdrawal of entrained at the railway tee especially on the first cylinder of the dryer section air.
  • FIGS. 1 and 2 show a schematic partial representation of a machine 10 for producing a fibrous web, which may in particular be a paper or board web. In each case, the region of the interface between the press section 12, the drying section 14 and a pulper 16 is shown.
  • the fibrous web is taken over in each case by an endless belt 18 running through the last press nip of the press section 12 into the dryer section 14.
  • the endless belt 18 is associated with its cleaning and conditioning a spray tube 20, via which the endless belt 18 is acted upon with water spray.
  • a scraper 22 is associated with the belt 18 in order to scrape off the resulting spray water from the belt 18 during normal operation.
  • a blade 26 preferably associated with the pulper 16 is provided. This is mounted on a holder 30 so as to be pivotable about an axis 28 extending in the machine transverse direction.
  • this blade 26 is located between a catching and sealing position lying in the region between the press section 12, pulper 16 and drying section 14 (see FIG. 1), in which it collects the spray water produced during normal operation and the drying section 14 with respect to the press section 12 seals, ie prevents the formation of air currents over the pulper 16, and a release position (see Figure 2) pivots in which it releases the pulper 16 for the resulting during the web transfer process fiber material and the deduction of the train tee especially on the first cylinder 24 of the dryer section 14 entrained air allows.
  • the blade 26 is above cylinder 32, i. especially hydraulic cylinder, adjustable.
  • the blade 26 may be provided with at least one water inlet or port and at least one water outlet, preferably a plurality of water outlet bores.
  • the pulper 16 thus receives a cylinder 32 pivotable blade 26 which collects the resulting spray water in normal operation and the drying section 14 with respect to the press section 12 "seals".
  • the blade 26 In MathSciencefall or tee-off operation on the first cylinder 24 of the drying section 14, the blade 26 is pivoted about the axis 28, whereby the pulper 16 is opened and a withdrawal of the entrained air is made possible at the railway tee.
  • the blade should offer the possibility of flushing any leftover paper with water as needed, e.g. is achieved by the aforementioned water connection and the water outlet holes.
  • the endless belt 18 may be formed in particular by a press belt or a felt.
  • a separate adjustable, preferably pivotable catwalk 34 may be provided for maintenance work on the scraper 22, on the spray tube 20 and / or on one or more other devices provided in the area in question, eg a so-called enviro-scan the area in question is movable or pivotable.
  • the pivoting of this catwalk 34 can be done for example via hand winches and / or the like, which is relatively inexpensive.

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  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

On the transfer of a moving web of paper or cardboard, taken from a continuous belt (18) between a press nip at the press section (12) and the drying station (14) of a papermaking or cardboard production machine (10), the detached belt is cleaned and conditioned by a water spray from a spray pipe (20). Surplus water is removed from the belt surface by a scraper (22), and any clinging fiber material is caught in a pulper (16). An adjustable paddle (26) is between the press and drying stations which, in the normal position, traps any water spray and shields the drying station and prevents an air flow over the pulper. In a free setting, the detached fiber material can fall freely into the pulper, and air carried by the web is taken off especially at the first cylinder (24) of the drying station.

Description

Die Erfindung betrifft ein Verfahren zum Betreiben einer der Herstellung einer Faserstoffbahn, insbesondere Papier- oder Kartonbahn, dienenden Maschine, bei dem die Faserstoffbahn an einem durch den letzten Preßnip der Pressenpartie laufenden endlosen Band in die Trockenpartie übernommen wird, das endlose Band zu dessen Reinigung und Konditionierung mit Spritzwasser beaufschlagt wird, das Spritzwasser mittels eines Schabers vom endlosen Band abgeschabt wird und beim Bahnüberführvorgang anfallendes Fasermaterial in einem Pulper aufgefangen wird. Sie betrifft ferner eine entsprechende Maschine zur Herstellung einer solchen Faserstoffbahn.The invention relates to a method for operating a the production of a fibrous web, in particular paper or board web, serving machine in which the fibrous web is taken on a running through the last nip of the press section endless belt in the dryer section, the endless belt for its cleaning and Conditioning is sprayed with water, the spray is scraped by a scraper from the endless belt and the web transfer process occurring fiber material is collected in a pulper. It further relates to a corresponding machine for producing such a fibrous web.

Derartige Vorrichtungen werden beispielsweise in der EP-A-0 908 556 sowie der EP-A-0 674 045 beschrieben.Such devices are described, for example, in EP-A-0 908 556 and EP-A-0 674 045.

Es besteht jedoch ein Bedürfnis an einer möglichst kostengünstigen und effektiven Schnittstelle zwischen der Pressenpartie, Trockenpartie und dem Pulper, die den folgenden Anforderungen gerechnet wird:However, there is a need for a most cost-effective and effective interface between the press section, dryer section and the pulper, which is expected to meet the following requirements:

So muß beim Bahnüberführvorgang von der Pressen- in die Trockenpartie anfallendes Papier im Pulper aufgefangen werden. Das im Normalbetrieb am Abnahmeschaber anfallende Wasser (z.B. ca. 200 l/min) ist separat abzuführen. Der Abnahmeschaber und das zugehörige Schmierspritzrohr, sowie eventuell ein sogenannter Enviro-Scan müssen bei Maschinenstillstand quer zur Maschine wartbar sein. Die Trockenpartie muß gegenüber der Pressenpartie im Normalbetrieb abgeschlossen sein, d.h. über den Pulper darf es nicht zur Ausbildung von Luftströmungen kommen. Bei einer Papierabnahme am ersten Zylinder der Trockenpartie muß die von der Papierbahn in den Pulper eingeschleppte Luft entweichen können. Die aufgefundene Lösung muß sowohl die Preßbandausführung als auch die Filzausführung gleichermaßen abdecken können.Thus, in the web transfer process from the press to the dryer section accumulating paper must be collected in the pulper. The water produced during normal operation on the scraper (eg approx. 200 l / min) must be drained off separately. The acceptance scraper and the associated lubricating spray pipe, as well as possibly a so-called Enviro scan must be at machine standstill be maintained across the machine. The drying section must be completed in relation to the press section in normal operation, ie on the pulper must not come to the formation of air currents. When removing paper from the first cylinder of the dryer section, the air entrained in the pulper by the paper web must be able to escape. The solution found must be able to cover both the Preßbandausführung and the felt execution equally.

Hierfür liefert der Stand der Technik keine befriedigende Lösung.For this purpose, the prior art does not provide a satisfactory solution.

Ziel der Erfindung ist es daher, ein verbessertes Verfahren sowie eine verbesserte Maschine der eingangs genannten Art zu schaffen, die auf möglichst kostengünstige und effektive Art und Weise und insbesondere den zuvor angegebenen Anforderungen genügen.The aim of the invention is therefore to provide an improved method and an improved machine of the type mentioned above, which satisfy the most cost effective and effective manner and in particular the requirements specified above.

Diese Aufgabe wird nach der Erfindung gelöst durch ein Verfahren zum Betreiben einer der Herstellung einer Faserstoffbahn, insbesondere Papier- oder Kartonbahn, dienenden Maschine, bei dem die Faserstoffbahn von einem durch den letzten Preßnip der Pressenpartie laufenden endlosen Band in die Trockenpartie übernommen wird, das endlose Band zu dessen Reinigung und Konditionierung mit Spritzwasser beaufschlagt wird, das Spritzwasser mittels eines Schabers vom endlosen Band abgeschabt wird und beim Bahnüberführvorgang anfallendes Faserstoffmaterial in einem Pulper aufgefangen wird, und bei dem eine verstellbare Schaufel verwendet wird und diese Schaufel zwischen einer im Bereich zwischen Pressenpartie, Pulper und Trockenpartie liegenden Auffang- und Abdichtposition, in der sie das während des normalen Betriebs anfallende Spritzwasser auffängt und die Trockenpartie gegenüber der Pressenpartie abdichtet, d.h. eine Ausbildung von Luftströmungen über den Pulper verhindert, und einer Freigabeposition verstellt wird, in der sie den Pulper für das beim Bahnüberführvorgang anfallende Fasermaterial freigibt und den Abzug von beim Bahnabschlag insbesondere am ersten Zylinder der Trokkenpartie eingeschleppter Luft ermöglicht. Dabei wird vorzugsweise eine verschwenkbare Schaufel verwendet. Zum Verstellen der Schaufel können beispielsweise Zylinder-, d.h. insbesondere Hydraulikzylinder, verwendet werden.This object is achieved according to the invention by a method for operating a the production of a fibrous web, in particular paper or board web, serving machine in which the fibrous web is taken over by a running through the last Preßnip the press section endless belt in the dryer section, the endless Strip is sprayed with water for its cleaning and conditioning, the spray water is scrape off from the endless belt by means of a scraper and pulp material collected during the web transfer process is collected in a pulper, and an adjustable blade is used, and this blade is between one in the area between the press section, Pulper and dryer section lying catching and sealing position in which it absorbs the accumulated during normal operation splashing and the dryer section opposite the press section seals, ie prevents the formation of air currents over the pulper, and a release position is adjusted, in which it releases the pulper for the resulting in the web transfer process fiber material and allows the withdrawal of entrained at the track tee especially on the first cylinder of the drying section air. In this case, a pivotable blade is preferably used. For adjusting the blade, for example, cylinder, ie in particular hydraulic cylinder can be used.

Der Pulper erhält also eine z.B. über Zylinder schwenkbare Schaufel, die im Normalbetrieb das anfallende Spritzwasser auffängt und die Trockenpartie gegenüber der Pressenpartie "abdichtet". Im Überführfall bzw. im Abschlagbetrieb am ersten Zylinder wird die Schaufel z.B. verschwenkt, wodurch der Pulper geöffnet und ein Abzug der beim Bahnabschlag abgeschleppten Luft ermöglicht wird.The pulper thus receives e.g. Cylinder swiveling bucket, which collects the accumulated spray water during normal operation and "seals" the dryer section opposite the press section. In Überführfall or tee-off operation on the first cylinder, the blade is e.g. pivoted, whereby the pulper is opened and a deduction of towed at the railway tee air is enabled.

Vorteilhafterweise wird eine mit wenigstens einem Wassereinlaß oder -anschluß und wenigstens einem Wasserauslaß, vorzugsweise mehreren Wasseraustrittsbohrungen, versehene Schaufel verwendet. Die Schaufel sollte also insbesondere die Möglichkeit bieten, bei Bedarf liegenbleibendes Papier mit Wasser wegzuspülen, was beispielsweise über einen Wasseranschluß und Wasseraustrittsbohrungen möglich ist.Advantageously, a blade provided with at least one water inlet or port and at least one water outlet, preferably a plurality of water outlet bores, is used. The blade should therefore in particular offer the possibility of rinsing off any remaining paper with water if necessary, which is possible, for example, via a water connection and water outlet bores.

Als endloses Band kann insbesondere ein Preßband oder ein Filz vorgesehen sein.As an endless belt may be provided in particular a press belt or a felt.

Gemäß einer bevorzugten praktischen Ausgestaltung des erfindungsgemäßen Verfahrens wird für Wartungsarbeiten am Schaber, an der das Spritzwasser liefernden Einrichtung, insbesondere Spritzrohr, und/oder an einer oder mehreren anderen in dem betreffenden Bereich vorgesehenen Einrichtungen, z.B. einem sogenannten Enviro-Scan, ein separater Laufsteg eingebracht, vorzugsweise eingeschwenkt. Dieser Laufsteg wird beispielsweise über Handwinden und/oder dergleichen verstellt bzw. verschwenkt.According to a preferred practical embodiment of the method according to the invention is for maintenance work on the scraper on the Splashing water supplying device, in particular spray tube, and / or at one or more other facilities provided in the area, such as a so-called Enviro scan, a separate catwalk introduced, preferably pivoted. This catwalk is adjusted or pivoted, for example via hand winches and / or the like.

Die eingangs genannte Aufgabe wird erfindungsgemäß auch gelöst durch eine Maschine zur Herstellung einer Faserstoffbahn, insbesondere Papier- oder Kartonbahn, in der die Faserstoffbahn von einem durch den letzten Preßnip der Pressenpartie laufenden endlosen Band in die Trockenpartie übernommen wird, das zu dessen Reinigung und Konditionierung mit Spritzwasser beaufschlagt wird und dem ein Schaber zugeordnet ist, und in der beim Bahnüberführvorgang anfallendes Faserstoffmaterial in einem Pulper aufgefangen wird, wobei eine Schaufel vorgesehen ist, die zwischen einer im Bereich zwischen Pressenpartie, Pulper und Trockenpartie liegenden Auffang- und Abdichtposition, in der sie das während des normalen Betriebs anfallende Spritzwasser auffängt und die Trockenpartie gegenüber der Pressenpartie abdichtet, d.h. eine Ausbildung von Luftströmungen über den Pulper verhindert, und einer Freigabeposition verstellbar ist, in der sie den Pulper für das beim Bahnüberführvorgang anfallende Fasermaterial freigibt und den Abzug von beim Bahnabschlag insbesondere am ersten Zylinder der Trockenpartie eingeschleppter Luft ermöglicht.The object mentioned is also achieved by a machine for producing a fibrous web, in particular paper or board web, in which the fibrous web is taken from a running through the last Preßnip the press section endless belt in the dryer section, which for its cleaning and conditioning with Sprayed water is applied and the scraper is associated, and is collected in the web transfer process resulting pulp material in a pulper, wherein a blade is provided, which lies between a lying between the press section, pulper and dryer section collecting and sealing position in which they during normal operation accumulating spray water and the drying section seals against the press section, ie prevents the formation of air currents over the pulper, and a release position is adjustable, in which it releases the pulper for the fiber material obtained in the web transfer operation and allows the withdrawal of entrained at the railway tee especially on the first cylinder of the dryer section air.

Bevorzugte Ausführungsformen der erfindungsgemäßen Maschine sind in den Unteransprüchen angegeben.Preferred embodiments of the machine according to the invention are specified in the subclaims.

Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher erläutert; in dieser zeigen:

Figur 1
eine schematische Teildarstellung einer Maschine zur Herstellung einer Faserstoffbahn im Normalbetrieb und
Figur 2
eine mit der Figur 1 vergleichbare schematische Teildarstellung der Maschine im Überführbetrieb bzw. beim Abschlag an dem ersten Zylinder.
The invention will be explained in more detail below with reference to an embodiment with reference to the drawing; in this show:
FIG. 1
a schematic partial view of a machine for producing a fibrous web in normal operation and
FIG. 2
a comparable to Figure 1 schematic partial view of the machine in the transfer operation or at the tee on the first cylinder.

Die Figuren 1 und 2 zeigen in jeweils schematischer Teildarstellung eine Maschine 10 zur Herstellung einer Faserstoffbahn, bei der es sich insbesondere um eine Papier- oder Kartonbahn handeln kann. Dabei ist jeweils der Bereich der Schnittstelle zwischen der Pressenpartie 12, der Trockenpartie 14 und einem Pulper 16 dargestellt.FIGS. 1 and 2 show a schematic partial representation of a machine 10 for producing a fibrous web, which may in particular be a paper or board web. In each case, the region of the interface between the press section 12, the drying section 14 and a pulper 16 is shown.

Die Faserstoffbahn wird jeweils von einem durch den letzten Preßnip der Pressenpartie 12 laufenden endlosen Band 18 in die Trockenpartie 14 übernommen.The fibrous web is taken over in each case by an endless belt 18 running through the last press nip of the press section 12 into the dryer section 14.

Dem endlosen Band 18 ist zu dessen Reinigung und Konditionierung ein Spritzrohr 20 zugeordnet, über das das endlose Band 18 mit Spritzwasser beaufschlagt wird. Zudem ist dem Band 18 ein Schaber 22 zugeordnet, um während des normalen Betriebs das anfallende Spritzwasser von dem Band 18 abzuschaben.The endless belt 18 is associated with its cleaning and conditioning a spray tube 20, via which the endless belt 18 is acted upon with water spray. In addition, a scraper 22 is associated with the belt 18 in order to scrape off the resulting spray water from the belt 18 during normal operation.

Beim in der Figur 2 dargestellten Bahnüberführvorgang bzw. Abschlag am ersten Zylinder 24 der Trockenpartie 14 wird anfallendes Faserstoffmaterial in dem Pulper 16 aufgefangen.In the case of the web transfer operation or tee-off on the first cylinder 24 of the dryer section 14, resulting pulp material is collected in the pulper 16.

Wie den Figuren 1 und 2 entnommen werden kann, ist eine vorzugsweise dem Pulper 16 zugeordnete Schaufel 26 vorgesehen. Diese ist um eine sich in Maschinenquerrichtung erstreckende Achse 28 schwenkbar an einer Halterung 30 gelagert.As can be seen in FIGS. 1 and 2, a blade 26 preferably associated with the pulper 16 is provided. This is mounted on a holder 30 so as to be pivotable about an axis 28 extending in the machine transverse direction.

Dabei ist diese Schaufel 26 insbesondere zwischen einer im Bereich zwischen Pressenpartie 12, Pulper 16 und Trockenpartie 14 liegenden Auffang- und Abdichtposition (vgl. Figur 1), in der sie das während des normalen Betriebs anfallende Spritzwasser auffängt und die Trockenpartie 14 gegenüber der Pressenpartie 12 abdichtet, d.h. eine Ausbildung von Luftströmungen über den Pulper 16 verhindert, und einer Freigabeposition (vgl. Figur 2) verschwenkbar, in der sie den Pulper 16 für das beim Bahnüberführvorgang anfallende Fasermaterial freigibt und den Abzug von beim Bahnabschlag insbesondere am ersten Zylinder 24 der Trockenpartie 14 eingeschleppter Luft ermöglicht.In particular, this blade 26 is located between a catching and sealing position lying in the region between the press section 12, pulper 16 and drying section 14 (see FIG. 1), in which it collects the spray water produced during normal operation and the drying section 14 with respect to the press section 12 seals, ie prevents the formation of air currents over the pulper 16, and a release position (see Figure 2) pivots in which it releases the pulper 16 for the resulting during the web transfer process fiber material and the deduction of the train tee especially on the first cylinder 24 of the dryer section 14 entrained air allows.

Im vorliegenden Fall ist die Schaufel 26 über Zylinder 32, d.h. insbesondere Hydraulikzylinder, verstellbar.In the present case, the blade 26 is above cylinder 32, i. especially hydraulic cylinder, adjustable.

Die Schaufel 26 kann mit wenigstens einem Wassereinlaß oder -anschluß und wenigstens einem Wasserauslaß, vorzugsweise mehreren Wasseraustrittsbohrungen, versehen sein.The blade 26 may be provided with at least one water inlet or port and at least one water outlet, preferably a plurality of water outlet bores.

Der Pulper 16 erhält also eine über Zylinder 32 verschwenkbare Schaufel 26, die im Normalbetrieb das anfallende Spritzwasser auffängt und die Trockenpartie 14 gegenüber der Pressenpartie 12 "abdichtet". Im Überführfall bzw. beim Abschlagbetrieb an dem ersten Zylinder 24 der Trokkenpartie 14 wird die Schaufel 26 um die Achse 28 verschwenkt, wodurch der Pulper 16 geöffnet und ein Abzug der eingeschleppten Luft beim Bahnabschlag ermöglicht wird.The pulper 16 thus receives a cylinder 32 pivotable blade 26 which collects the resulting spray water in normal operation and the drying section 14 with respect to the press section 12 "seals". In Überführfall or tee-off operation on the first cylinder 24 of the drying section 14, the blade 26 is pivoted about the axis 28, whereby the pulper 16 is opened and a withdrawal of the entrained air is made possible at the railway tee.

Die Schaufel sollte die Möglichkeit bieten, bei Bedarf liegenbleibendes Papier mit Wasser wegzuspülen, was z.B. durch den zuvor erwähnten Wasseranschluß und die Wasseraustrittsbohrungen erreicht wird.The blade should offer the possibility of flushing any leftover paper with water as needed, e.g. is achieved by the aforementioned water connection and the water outlet holes.

Das endlose Band 18 kann insbesondere durch ein Preßband oder einen Filz gebildet sein.The endless belt 18 may be formed in particular by a press belt or a felt.

Aus Sicherheitsgründen kann für Wartungsarbeiten am Schaber 22, am Spritzrohr 20 und/oder an einer oder mehreren anderen in dem betreffenden Bereich vorgesehenen Einrichtungen, z.B. einem sogenannten Enviro-Scan, ein separater verstellbarer, vorzugsweise verschwenkbarer, Laufsteg 34 vorgesehen sein, der ggf. in den betreffenden Bereich bewegbar bzw. verschwenkbar ist. Das Abschwenken dieses Laufstegs 34 kann beispielsweise über Handwinden und/oder dergleichen erfolgen, was relativ kostengünstig ist.For safety reasons, a separate adjustable, preferably pivotable catwalk 34 may be provided for maintenance work on the scraper 22, on the spray tube 20 and / or on one or more other devices provided in the area in question, eg a so-called enviro-scan the area in question is movable or pivotable. The pivoting of this catwalk 34 can be done for example via hand winches and / or the like, which is relatively inexpensive.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Maschinemachine
1212
Pressenpartiepress section
1414
Trockenpartiedrying section
1616
Pulperpulper
1818
endloses Bandendless band
2020
Spritzrohrspray wand
2222
Schaberscraper
2424
erster Zylinderfirst cylinder
2626
Schaufelshovel
2828
Achseaxis
3030
Halterungbracket
3232
Zylinder, HydraulikzylinderCylinder, hydraulic cylinder
3434
Laufstegcatwalk

Claims (16)

  1. Method of operating a machine (10) used for producing a fibrous web, in particular paper or board web, in which the fibrous web is taken over into the drying section (14) by an endless belt (18) running through the last press nip of the press section (12), the endless belt (18) has spray water applied to it in order to clean and condition it, the spray water is scraped off the endless belt (18) by means of a doctor (22) and fibrous material accumulating during the web transfer operation is collected in a pulper (16), and in which an adjustable scoop (26) is used and this scoop (26) is displaced between a connecting and sealing position, located in the region between press section (12), pulper (16) and drying section (14), in which it collects spray water accumulating during normal operation and seals off the drying section (14) with respect to the press section (12), that is to say prevents the formation of air flows over the pulper (16), and an exposed position, in which it exposes the pulper (16) to the fibrous material that accumulates during the web transfer operation and permits the extraction of air entrained as the web is knocked off, in particular on the first cylinder (24) of the drying section (14).
  2. Method according to Claim 1, in which a pivotable scoop (26) is used.
  3. Method according to Claim 1 or 2, characterized in that a scoop (26) that can be displaced by cylinders (32), that is to say preferably hydraulic cylinders, is used.
  4. Method according to one of the preceding claims, characterized in that a scoop (26) provided with at least one water inlet or connection and at least one water outlet, preferably a plurality of water outlet holes, is used.
  5. Method according to one of the preceding claims, characterized in that the endless belt (18) provided is a press belt.
  6. Method according to one of Claims 1 to 4, characterized in that the endless belt (18) provided is a felt.
  7. Method according to one of the preceding claims, characterized in that, for maintenance work on the doctor (22), on the device (20) that supplies the spray water, in particular a spray pipe, and/or on one or more other devices provided in the relevant region, for example what is known as an Enviro-Scan, a separate catwalk (34) is introduced, preferably pivoted in.
  8. Method according to Claim 7, characterized in that the catwalk (34) is displaced or pivoted via hand-operated winches and/or the like.
  9. Machine (10) for producing a fibrous web, in particular paper or board web, in which the fibrous web is taken over into the drying section (14) by an endless belt (18) which runs through the last press nip of the press section (12), to which belt spray water is applied in order to clean and condition it and to which a doctor (22) is assigned, and in which fibrous material accumulating during the web transfer operation is collected in a pulper (16), characterized in that a scoop (26) is provided, which can be displaced between a connecting and sealing position, located in the region between press section (12), pulper (16) and drying section (14), in which it collects spray water accumulating during normal operation and seals off the drying section (14) with respect to the press section (12), that is to say prevents the formation of air flows over the pulper (16), and an exposed position, in which it exposes the pulper (16) to the fibrous material that accumulates during the web transfer operation and permits the extraction of air entrained as the web is knocked off, in particular on the first cylinder (24) of the drying section (14).
  10. Machine according to Claim 9, characterized in that the scoop (26) can be pivoted.
  11. Machine according to Claim 9 or 10, characterized in that the scoop (26) can be displaced by cylinders (32), that is to say preferably hydraulic cylinders.
  12. Machine according to one of Claims 9 to 11, characterized in that the scoop (26) is provided with at least one water inlet or connection and at least one water outlet, preferably a plurality of water outlet holes.
  13. Machine according to one of Claims 9 to 12, characterized in that the endless belt (18) is formed by a press belt.
  14. Machine according to one of Claims 10 to 12, characterized in that the endless belt (18) is formed by a felt.
  15. Machine according to one of Claims 9 to 14, characterized in that, for maintenance work on the doctor (22), on the device (20) that supplies the spray water, in particular a spray pipe, and/or on one or more other devices provided in the relevant region, for example what is known as an Enviro-Scan, a separately displaceable, preferably pivotable, catwalk (34) is provided, which can be moved or pivoted into the relevant region as appropriate.
  16. Machine according to Claim 15, characterized in that the catwalk (34) can be displaced or pivoted via hand-operated winches and/or the like.
EP02007873A 2001-07-26 2002-04-09 Method for transfering a fibrous web and machine for producing a fibrous web Expired - Fee Related EP1279765B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10136466A DE10136466A1 (en) 2001-07-26 2001-07-26 Method for operating a machine used to produce a fibrous web and machine for producing such a fibrous web
DE10136466 2001-07-26

Publications (2)

Publication Number Publication Date
EP1279765A1 EP1279765A1 (en) 2003-01-29
EP1279765B1 true EP1279765B1 (en) 2005-09-21

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EP02007873A Expired - Fee Related EP1279765B1 (en) 2001-07-26 2002-04-09 Method for transfering a fibrous web and machine for producing a fibrous web

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EP (1) EP1279765B1 (en)
AT (1) ATE305064T1 (en)
DE (2) DE10136466A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI119069B (en) * 2005-02-23 2008-07-15 Metso Paper Inc Arrangement with press section of web forming machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4409660A1 (en) * 1994-03-21 1994-08-18 Voith Gmbh J M Tail cutting and feeding device
DE19611166A1 (en) * 1996-03-21 2000-12-07 Voith Sulzer Papiermasch Gmbh Scraper device for a paper machine
DE19744341A1 (en) * 1997-10-07 1999-04-15 Voith Sulzer Papiertech Patent Paper machine

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DE10136466A1 (en) 2003-02-13
EP1279765A1 (en) 2003-01-29
ATE305064T1 (en) 2005-10-15
DE50204309D1 (en) 2006-02-02

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