EP2085513A1 - Pressing unit - Google Patents
Pressing unit Download PDFInfo
- Publication number
- EP2085513A1 EP2085513A1 EP08168942A EP08168942A EP2085513A1 EP 2085513 A1 EP2085513 A1 EP 2085513A1 EP 08168942 A EP08168942 A EP 08168942A EP 08168942 A EP08168942 A EP 08168942A EP 2085513 A1 EP2085513 A1 EP 2085513A1
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- EP
- European Patent Office
- Prior art keywords
- pressure
- pressing unit
- unit according
- shoe
- pressing
- 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.)
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- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- VREFGVBLTWBCJP-UHFFFAOYSA-N alprazolam Chemical group C12=CC(Cl)=CC=C2N2C(C)=NN=C2CN=C1C1=CC=CC=C1 VREFGVBLTWBCJP-UHFFFAOYSA-N 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 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
- D21F3/0209—Wet presses with extended press nip
- D21F3/0218—Shoe presses
Definitions
- the invention relates to a pressing unit for a press roll, which has an axially extending contact shoe, which is mounted on a support, wherein the contact shoe against the carrier in a pressing direction linearly displaceable and between the contact shoe and the carrier at least one active pressure unit is arranged.
- the invention also relates to a press roll with a Anpressmaschine invention and their use.
- the pressure shoe extends generally over the entire press nip between the press roll and a counter roll. Temperature differences, the internal pressure of the rolls, an uneven stiffness of the counter roll and the weight-related sag of the rolls lead to an uneven line cross-section in the press nip.
- the object of the invention is therefore to improve the producible with such Anpressech pressure profile with the least possible effort.
- this object is achieved in that a plurality of axially juxtaposed transmission elements are present between the printing unit and the pressure shoe.
- the transmission elements give the contact shoe in the circumferential direction the required stable support, while they hardly affect the adaptability of the contact shoe to a counter surface in the axial direction.
- the transmission elements should be dimensionally stable, in particular in the pressing direction and preferably made of steel, aluminum or a plastic.
- the transmission elements are mounted at least slightly displaceable in the axial direction and have little play with each other.
- the pressure shoe should be relatively flexible.
- the pressure shoe in the pressing direction has an average thickness between 5 and 30, preferably between 15 and 20 mm and consists of aluminum or an aluminum alloy.
- the press shoe In order to be able to reopen a press nip quickly and easily, the press shoe should be coupled to the carrier via a return element, which can easily be achieved with spring elements in a known manner.
- At least one flexible, preferably axially over the entire contact pressure shoe extending balance plate is present between the transmission elements and the printing unit.
- the pressure unit should be formed by a plurality of axially juxtaposed and preferably separately controllable pressure elements.
- the number of axially juxtaposed transmission elements is greater than the number of axially juxtaposed pressure elements.
- the printing unit of several, in the circumferential direction of the press roll arranged side by side and preferably separately controllable pressure elements is formed.
- the printing unit is formed by only one printing element.
- the pressure elements have hitherto been formed in each case by a piston-cylinder arrangement which can be acted upon by a pressure fluid.
- the pressure elements are each formed by a flexible pressure body, which has at least one cavity, which for generating the pressing force via an increase in volume of the pressure hull with a pressurized fluid can be acted upon.
- the press shoe should have a concave pressing surface in the circumferential direction of the press roll and the press roll should have a rotatable and preferably flexible roll mantle.
- Prolonged press gaps are also associated with a longer residence time of the material web in the press nip, which may be advantageous in particular in the case of smoothing or dewatering the same.
- the pressing unit presses the roll shell to form a press nip in the direction of a counter roll.
- the press roll according to the invention is preferably used in a machine for producing and / or finishing a paper, board, tissue or another fibrous web.
- FIG. 1 shows a schematic partial cross section through a press arrangement for dewatering a fibrous web 10, in particular a tissue web.
- the press nip is formed by a press roll in the form of a shoe press roll and a cylindrical counter roll 3.
- the fibrous web 10 runs here by way of example with a lower, water-absorbing press felt 14. After the press nip, the fibrous web 10 adheres to the smooth lateral surface of the counter roll 3 and can be removed therefrom with a creping doctor.
- the press roll is formed by a flexible roll shell 2, which is pressed by a Anpress unit with a pressure shoe 1 in the pressing direction 9 to the counter roll 3.
- the pressure shoe 1 has a concave pressing surface 12.
- the pressing unit is mounted on an axially extending through the rotatable roll shell 2, stationary support 7.
- the contact pressure of the contact shoe 1 takes place here via two juxtaposed in the circumferential direction of the press roll and with respect to the contact pressure separately controllable pressure elements 5.6.
- These pressure elements 5,6 are each formed here by a flexible pressure body in the form of an axially extending pressure hose.
- each pressure hose is connected to a source of pressurized fluid, so that it can be acted upon by a volume increase of the pressure hose with a pressure fluid, in particular pressure oil for generating the pressing force.
- the pressure element may, for example, instead of the elastic walls also have foldable, rigid walls to allow a change in volume.
- the pressure shoe 1 is made flexible, made of aluminum and has a thickness in the pressing direction 9 between 15 and 20 mm. This flexibility allows a comprehensive adaptation to the contour of the counter roll. 3
- the flexurally soft pressure shoe 1 allows an optimal adaptation to the shape of the counter roller 3 via the contact pressure with the two flexible pressure elements 5, 6.
- a row of axially adjacent transmission elements 4 is located between the pressure elements 5, 6 and the pressure shoe 1.
- These transmission elements 4 are stiff compared to the pressure shoe and made of plastic or metal.
- the pressure profile in the circumferential direction, in particular in the transition region between the two pressure elements 5,6 is made uniform.
- the transmission elements 4 are slightly displaceable in the axial direction in a guide. A clearance of about 0.2 mm between the transmission elements 4 allows the independent movement of the transmission elements 4 in the pressing direction.
- the pressure shoe 1 is connected via a return element 8 in the form of a known return spring to the carrier 7.
- a compensating plate 11 which extends over the entire pressure shoe 1.
Landscapes
- Paper (AREA)
- Finger-Pressure Massage (AREA)
- Sampling And Sample Adjustment (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
Die Erfindung betrifft eine Anpresseinheit für eine Presswalze, die einen axial verlaufenden Anpressschuh aufweist, der an einem Träger gelagert ist, wobei der Anpressschuh gegenüber dem Träger in einer Pressrichtung linear verschiebbar und zwischen dem Anpressschuh und dem Träger zumindest eine aktive Druckeinheit angeordnet ist.The invention relates to a pressing unit for a press roll, which has an axially extending contact shoe, which is mounted on a support, wherein the contact shoe against the carrier in a pressing direction linearly displaceable and between the contact shoe and the carrier at least one active pressure unit is arranged.
Die Erfindung betrifft auch eine Presswalze mit einer erfindungsgemäßen Anpresseinheit und deren Einsatz.The invention also relates to a press roll with a Anpresseinheit invention and their use.
Dabei erstreckt sich der Anpressschuh im Allgemeinen über den gesamten Pressspalt zwischen der Presswalze und einer Gegenwalze. Temperaturunterschiede, der Dampfinnendruck von Walzen, eine ungleichmäßige Steifigkeit der Gegenwalze sowie der gewichtsbedingte Durchhang der Walzen führen zu einem ungleichmäßigen Linienkraftquerprofil im Pressspalt.In this case, the pressure shoe extends generally over the entire press nip between the press roll and a counter roll. Temperature differences, the internal pressure of the rolls, an uneven stiffness of the counter roll and the weight-related sag of the rolls lead to an uneven line cross-section in the press nip.
Daher wurden Lösungen entwickelt, bei denen der Anpressdruck in den beiden Randbereichen der Presswalze separat steuerbar ist, was jedoch nicht immer befriedigt und mit relativ viel Aufwand verbunden ist.Therefore, solutions were developed in which the contact pressure in the two edge regions of the press roll is separately controllable, but this is not always satisfied and associated with relatively much effort.
Darüber hinaus gibt es Lösungen den Anpressschuh flexibel zu gestalten und über mehrere Druckelemente anzupressen. Damit lässt sich zwar das Druckprofil im Pressspalt besser beeinflussen, jedoch sind bei den Übergängen zwischen den Druckelementen Drucksprünge zu beobachten.In addition, there are solutions to make the contact shoe flexible and press several printing elements. Although the pressure profile in the press nip can thus be better influenced, pressure jumps can be observed at the transitions between the pressure elements.
Die Aufgabe der Erfindung ist es daher, das mit einer derartigen Anpresseinheit erzeugbare Druckprofil mit möglichst geringem Aufwand zu verbessern.The object of the invention is therefore to improve the producible with such Anpresseinheit pressure profile with the least possible effort.
Erfindungsgemäß wurde die Aufgabe dadurch gelöst, dass zwischen der Druckeinheit und dem Anpressschuh mehrere axial nebeneinander angeordnete Übertragungselemente vorhanden sind.According to the invention, this object is achieved in that a plurality of axially juxtaposed transmission elements are present between the printing unit and the pressure shoe.
Dabei geben die Übertragungselemente dem Anpressschuh in Umfangsrichtung die erforderliche stabile Abstützung, während sie in axialer Richtung die Anpassbarkeit des Anpressschuhs an eine Gegenfläche kaum beeinträchtigen.In this case, the transmission elements give the contact shoe in the circumferential direction the required stable support, while they hardly affect the adaptability of the contact shoe to a counter surface in the axial direction.
Hierzu sollten die Übertragungselemente insbesondere in Pressrichtung formstabil sein und vorzugsweise aus Stahl, Aluminium oder einem Kunststoff bestehen.For this purpose, the transmission elements should be dimensionally stable, in particular in the pressing direction and preferably made of steel, aluminum or a plastic.
Um die relative Bewegbarkeit der Übertragungselemente zu gewährleisten, ist es vorteilhaft, wenn die Übertragungselemente in axialer Richtung zumindest geringfügig verschiebbar gelagert sind und ein geringes Spiel zueinander haben.In order to ensure the relative mobility of the transmission elements, it is advantageous if the transmission elements are mounted at least slightly displaceable in the axial direction and have little play with each other.
Im Interesse einer möglichst guten Anpassung des Anpressschuhs an eine Gegenfläche, insbesondere eine Gegenwalze, und damit eines verbesserten Druckprofils in einem Pressspalt sollte der Anpressschuh relativ biegeweich sein.In the interests of the best possible adaptation of the contact shoe to a mating surface, in particular a counter-roller, and thus an improved pressure profile in a press nip the pressure shoe should be relatively flexible.
Hierfür ist es vorteilhaft, wenn der Anpressschuh in Pressrichtung eine durchschnittliche Dicke zwischen 5 und 30, vorzugsweise zwischen 15 und 20 mm hat und aus Aluminium oder einer Aluminiumlegierung besteht.For this purpose, it is advantageous if the pressure shoe in the pressing direction has an average thickness between 5 and 30, preferably between 15 and 20 mm and consists of aluminum or an aluminum alloy.
Um einen Pressspalt schnell und einfach wieder öffnen zu können, sollte der Anpressschuh über ein Rückholelement mit dem Träger gekoppelt sein, was mit Federelementen auf bekannte Weise leicht realisierbar ist.In order to be able to reopen a press nip quickly and easily, the press shoe should be coupled to the carrier via a return element, which can easily be achieved with spring elements in a known manner.
Zur Verminderung des Verschleißes der Oberflächen der Druckeinheit ist es von Vorteil, wenn zwischen den Übertragungselementen und der Druckeinheit zumindest eine biegeweiche, sich vorzugsweise axial über den gesamten Anpressschuh erstreckende Ausgleichsplatte vorhanden ist.To reduce the wear of the surfaces of the printing unit, it is advantageous if at least one flexible, preferably axially over the entire contact pressure shoe extending balance plate is present between the transmission elements and the printing unit.
Im Interesse einer Steuerung des Druckprofils axial entlang der Presswalze sollte die Druckeinheit von mehreren, axial nebeneinander angeordneten und vorzugsweise separat steuerbaren Druckelementen gebildet werden.In the interest of controlling the pressure profile axially along the pressure roller, the pressure unit should be formed by a plurality of axially juxtaposed and preferably separately controllable pressure elements.
Um dabei die Übergänge zwischen den Druckelementen möglichst allmählich zu gestalten, ist es von Vorteil, wenn die Anzahl der axial nebeneinander angeordneten Übertragungselemente größer ist als die Anzahl der axial nebeneinander angeordneten Druckelemente.In order to make the transitions between the printing elements as gradually as possible, it is advantageous if the number of axially juxtaposed transmission elements is greater than the number of axially juxtaposed pressure elements.
Für die Einstellung des Druckprofils in Umfangsrichtung der Presswalze ist es vorteilhaft, wenn die Druckeinheit von mehreren, in Umfangsrichtung der Presswalze nebeneinander angeordneten und vorzugsweise separat steuerbaren Druckelementen gebildet wird.For the adjustment of the pressure profile in the circumferential direction of the press roll, it is advantageous if the printing unit of several, in the circumferential direction of the press roll arranged side by side and preferably separately controllable pressure elements is formed.
Bei geringen Anforderungen an die Beeinflussbarkeit des Druckprofils im Pressspalt kann es jedoch auch genügen, wenn die Druckeinheit von nur einem Druckelement gebildet wird.With low requirements on the influenceability of the pressure profile in the press nip, however, it may also be sufficient if the printing unit is formed by only one printing element.
Vor allem von den erforderlichen Druckkräften im Pressspalt hängt die Gestaltung der Druckelemente ab.Above all, the pressure forces required in the press nip depends on the design of the printing elements.
Überwiegend wurden die Druckelemente bisher jeweils von einer, mit einem Druckfluid beaufschlagbaren Kolben-Zylinder-Anordnung gebildet.For the most part, the pressure elements have hitherto been formed in each case by a piston-cylinder arrangement which can be acted upon by a pressure fluid.
Insbesondere bei geringen Druckkräften, wie diese beispielsweise bei der Behandlung von Tissuebahnen erforderlich sind, kann es jedoch vorteilhaft sein, wenn die Druckelemente jeweils von einem flexiblen Druckkörper gebildet werden, der wenigstens einen Hohlraum aufweist, welcher zur Erzeugung der Presskraft über eine Volumenvergrößerung des Druckkörpers mit einem Druckfluid beaufschlagbar ist.In particular, at low compressive forces, as required for example in the treatment of tissue webs, it may be advantageous if the pressure elements are each formed by a flexible pressure body, which has at least one cavity, which for generating the pressing force via an increase in volume of the pressure hull with a pressurized fluid can be acted upon.
Zur Bildung eines verlängerten Pressspaltes mit einer zylindrischen Gegenwalze sollte der Anpressschuh in Umfangrichtung der Presswalze betrachtet eine konkave Pressfläche und die Presswalze einen rotierbaren und vorzugsweise flexiblen Walzenmantel besitzen.To form an extended press nip with a cylindrical mating roll, the press shoe should have a concave pressing surface in the circumferential direction of the press roll and the press roll should have a rotatable and preferably flexible roll mantle.
Verlängerte Pressspalte sind auch mit einer längeren Verweilzeit der Materialbahn im Pressspalt verbunden, was insbesondere bei der Glättung oder Entwässerung derselben von Vorteil sein kann.Prolonged press gaps are also associated with a longer residence time of the material web in the press nip, which may be advantageous in particular in the case of smoothing or dewatering the same.
Dabei drückt die Anpresseinheit den Walzenmantel zur Bildung eines Pressspaltes in Richtung einer Gegenwalze.The pressing unit presses the roll shell to form a press nip in the direction of a counter roll.
Bevorzugt wird die erfindungsgemäße Presswalze in einer Maschine zur Herstellung und/oder Veredlung einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn eingesetzt.The press roll according to the invention is preferably used in a machine for producing and / or finishing a paper, board, tissue or another fibrous web.
Nachfolgend soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden. In der beigefügten Zeichnung zeigt die Figur einen schematischen Teilquerschnitt durch eine Pressanordnung zur Entwässerung einer Faserstoffbahn 10, insbesondere einer Tissuebahn.The invention will be explained in more detail with reference to an exemplary embodiment. In the accompanying drawing, the figure shows a schematic partial cross section through a press arrangement for dewatering a
Dabei wird der Pressspalt von einer Presswalze in Form einer Schuhpresswalze und einer zylindrischen Gegenwalze 3 gebildet.In this case, the press nip is formed by a press roll in the form of a shoe press roll and a
In und durch den Pressspalt läuft die Faserstoffbahn 10 hier beispielhaft mit einem unteren, wasseraufnehmenden Pressfilz 14. Nach dem Pressspalt bleibt die Faserstoffbahn 10 an der glatten Mantelfläche der Gegenwalze 3 haften und kann von dieser mit einem Kreppschaber wieder entfernt werden.In and through the press nip, the
Bei der Entwässerung von Tissuebahnen kommt es auf eine volumenschonende Entwässerung an, weshalb der Pressspalt verlängert ausgeführt ist.In the drainage of tissue webs, it is on a low-volume drainage, which is why the press nip is made extended.
Hierzu wird die Presswalze von einem flexiblen Walzenmantel 2 gebildet, der von einer Anpresseinheit mit einem Anpressschuh 1 in Pressrichtung 9 zur Gegenwalze 3 gedrückt wird. Dabei besitzt der Anpressschuh 1 eine konkave Pressfläche 12.For this purpose, the press roll is formed by a flexible roll shell 2, which is pressed by a Anpress unit with a pressure shoe 1 in the pressing direction 9 to the
Die Anpresseinheit ist dabei an einem axial durch den rotierbaren Walzenmantel 2 verlaufenden, feststehenden Träger 7 gelagert.The pressing unit is mounted on an axially extending through the rotatable roll shell 2,
Die Anpressung des Anpressschuhs 1 erfolgt hier über zwei in Umfangrichtung der Presswalze nebeneinander angeordnete und hinsichtlich des Anpressdrucks separat steuerbare Druckelemente 5,6.The contact pressure of the contact shoe 1 takes place here via two juxtaposed in the circumferential direction of the press roll and with respect to the contact pressure separately controllable pressure elements 5.6.
Diese Druckelemente 5,6 werden hier jeweils von einem flexiblen Druckkörper in Form eines axial verlaufenden Druckschlauches gebildet.These
Dabei ist der Hohlraum 13 jedes Druckschlauches mit einer Druckfluidquelle verbunden, so dass dieser zur Erzeugung der Presskraft über eine Volumenvergrößerung des Druckschlauches mit einem Druckfluid, insbesondere Drucköl beaufschlagbar ist.In this case, the
Beschrieben sind derartige Druckelemente beispielsweise in der
Der Anpressschuh 1 ist biegeweich ausgeführt, aus Aluminium und hat eine Dicke in Pressrichtung 9 zwischen 15 und 20 mm. Diese Flexibilität erlaubt eine umfassende Anpassung an die Kontur der Gegenwalze 3.The pressure shoe 1 is made flexible, made of aluminum and has a thickness in the pressing direction 9 between 15 and 20 mm. This flexibility allows a comprehensive adaptation to the contour of the counter roll. 3
Bei Tissuemaschinen wir meist als Gegenwalze 3 ein relativ leicht verformbarer Kreppzylinder eingesetzt. Auf Grund der Verformung des Kreppzylinders bleibt der Pressspalt besonders im Randbereich nicht gerade, so dass hier unerwünschte Linienkraftabweichungen auftreten können.In tissue machines we usually used as a
Der biegeweiche Anpressschuh 1 erlaubt über die Anpressung mit den beiden flexiblen Druckelementen 5,6 eine optimale Anpassung an die Form der Gegenwalze 3.The flexurally soft pressure shoe 1 allows an optimal adaptation to the shape of the
Um im Bereich des Übergangs zwischen den beiden Druckelementen 5,6 nur geringe Druckabweichungen im Pressspalt zu erzeugen, befindet sich zwischen den Druckelementen 5,6 und dem Anpressschuh 1 eine Reihe von axial nebeneinander angeordneten Übertragungselementen 4.In order to produce only slight pressure deviations in the press nip in the region of the transition between the two
Diese Übertragungselemente 4 sind im Vergleich zum Druckschuh steif und aus Kunststoff oder Metall hergestellt.These transmission elements 4 are stiff compared to the pressure shoe and made of plastic or metal.
Durch die Formstabilität der Übertragungselemente 4 wird der Druckverlauf in Umfangsrichtung, insbesondere im Übergangsbereich zwischen den beiden Druckelementen 5,6 vergleichmäßigt.Due to the dimensional stability of the transmission elements 4, the pressure profile in the circumferential direction, in particular in the transition region between the two
Darüber hinaus sind die Übertragungselemente 4 in axialer Richtung in einer Führung geringfügig verschiebbar. Ein Spiel von ca. 0,2 mm zwischen den Übertragungselementen 4 erlaubt die unabhängige Bewegung der Übertragungselemente 4 in Pressrichtung 9.In addition, the transmission elements 4 are slightly displaceable in the axial direction in a guide. A clearance of about 0.2 mm between the transmission elements 4 allows the independent movement of the transmission elements 4 in the pressing direction. 9
Um bei Stillstand oder Havarie den Pressspalt schnell öffnen zu können, ist der Anpressschuh 1 über ein Rückholelement 8 in Form einer bekannten Rückholfeder mit dem Träger 7 verbunden.In order to open the press nip quickly at standstill or accident, the pressure shoe 1 is connected via a return element 8 in the form of a known return spring to the
Zur Schonung der Druckschläuche befindet sich zwischen den Übertragungselementen 4 und den Druckelementen 5,6 eine Ausgleichsplatte 11, die sich über den gesamten Anpressschuh 1 erstreckt.To protect the pressure hoses is located between the transmission elements 4 and the pressure elements 5.6 a
Claims (19)
zwischen der Druckeinheit und dem Anpressschuh (1) mehrere axial nebeneinander angeordnete Übertragungselemente (4) vorhanden sind.Pressing unit for a press roll, which has an axially extending pressure shoe (1) which is mounted on a support (7), wherein the pressure shoe (1) relative to the support (7) in a pressing direction (9) linearly displaceable and between the pressure shoe ( 1) and the carrier (7) at least one active pressure unit is arranged, characterized in that
between the printing unit and the pressure shoe (1) a plurality of axially juxtaposed transmission elements (4) are present.
die Übertragungselemente (4) insbesondere in Pressrichtung (9) formstabil sind und vorzugsweise aus Stahl, Aluminium oder einem Kunststoff bestehen.Pressing unit according to claim 1, characterized in that
the transmission elements (4) are dimensionally stable, in particular in the pressing direction (9), and are preferably made of steel, aluminum or a plastic.
die Übertragungselemente (4) in axialer Richtung zumindest geringfügig verschiebbar gelagert sind.Pressing unit according to claim 1 or 2, characterized in that
the transmission elements (4) are mounted at least slightly displaceable in the axial direction.
der Anpressschuh (1) relativ biegeweich ist.Pressing unit according to one of the preceding claims, characterized in that
the pressure shoe (1) is relatively flexible.
der Anpressschuh (1) in Pressrichtung (9) eine durchschnittliche Dicke zwischen 5 und 30, vorzugsweise zwischen 15 und 20 mm hat.Pressing unit according to one of the preceding claims, characterized in that
the pressure shoe (1) in the pressing direction (9) has an average thickness between 5 and 30, preferably between 15 and 20 mm.
der Anpressschuh (1) aus Aluminium oder einer Aluminiumlegierung besteht.Pressing unit according to one of the preceding claims, characterized in that
the contact shoe (1) consists of aluminum or an aluminum alloy.
der Anpressschuh (1) über ein Rückholelement (8) mit dem Träger (7) gekoppelt ist.Pressing unit according to one of the preceding claims, characterized in that
the pressure shoe (1) is coupled to the carrier (7) via a return element (8).
zwischen den Übertragungselementen (4) und der Druckeinheit zumindest eine biegeweiche, sich vorzugsweise axial über den gesamten Anpressschuh (1) erstreckende Ausgleichsplatte (11) vorhanden ist.Pressing unit according to one of the preceding claims, characterized in that
between the transmission elements (4) and the pressure unit at least one bending soft, preferably axially over the entire pressure shoe (1) extending compensating plate (11) is present.
sich die Ausgleichsplatte (11) in Umfangsrichtung der Presswalze über den gesamten Anpressschuh (1) erstreckt.Pressing unit according to claim 8, characterized in that
the compensating plate (11) extends in the circumferential direction of the press roll over the entire press shoe (1).
die Druckeinheit von mehreren, axial nebeneinander angeordneten und vorzugsweise separat steuerbaren Druckelementen (5,6) gebildet wird.Pressing unit according to one of the preceding claims, characterized in that
the printing unit of a plurality of axially juxtaposed and preferably separately controllable pressure elements (5,6) is formed.
die Anzahl der axial nebeneinander angeordneten Übertragungselemente (4) größer ist als die Anzahl der axial nebeneinander angeordneten Druckelemente (5,6) ist.Pressing unit according to claim 10, characterized in that
the number of axially juxtaposed transmission elements (4) is greater than the number of axially juxtaposed pressure elements (5,6).
die Druckeinheit von mehreren, in Umfangsrichtung der Presswalze nebeneinander angeordneten und vorzugsweise separat steuerbaren Druckelementen (5,6) gebildet wird.Pressing unit according to one of the preceding claims, characterized in that
the printing unit is formed by a plurality of pressure elements (5, 6) arranged side by side in the circumferential direction of the press roll and preferably separately controllable.
die Druckeinheit von nur einem Druckelement (5,6) gebildet wird.Pressing unit according to one of claims 1 to 9, characterized in that
the printing unit is formed by only one printing element (5, 6).
die Druckelemente (5,6) jeweils von einer, mit einem Druckfluid beaufschlagbaren Kolben-Zylinder-Anordnung gebildet werden.Pressing unit according to one of claims 10 to 13, characterized in that
the pressure elements (5, 6) are each formed by a piston-cylinder arrangement which can be acted upon by a pressure fluid.
die Druckelemente (5,6) jeweils von einem flexiblen Druckkörper gebildet werden, der wenigstens einen Hohlraum (13) aufweist, welcher zur Erzeugung der Presskraft über eine Volumenvergrößerung des Druckkörpers mit einem Druckfluid beaufschlagbar ist.Pressing unit according to one of claims 10 to 13, characterized in that
the pressure elements (5, 6) are each formed by a flexible pressure body, which has at least one cavity (13), which can be acted upon by a pressurized fluid to produce the pressing force via an increase in volume of the pressure body.
der Anpressschuh (1) in Umfangrichtung der Presswalze betrachtet eine konkave Pressfläche (12) besitzt.Pressing unit according to one of the preceding claims, characterized in that
the contact shoe (1) viewed in the circumferential direction of the press roll has a concave pressing surface (12).
diese einen rotierbaren und vorzugsweise flexiblen Walzenmantel (2) besitzt.Press roll with a pressing unit according to one of the preceding claims, characterized in that
this has a rotatable and preferably flexible roll shell (2).
die Anpresseinheit den Walzenmantel (2) zur Bildung eines Pressspaltes in Richtung einer Gegenwalze (3) drückt.Press roll with a pressing unit according to one of the preceding claims, characterized in that
the pressing unit presses the roll shell (2) in the direction of a counter roll (3) to form a press nip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL08168942T PL2085513T3 (en) | 2008-01-31 | 2008-11-12 | Pressing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008000199A DE102008000199A1 (en) | 2008-01-31 | 2008-01-31 | pressing unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2085513A1 true EP2085513A1 (en) | 2009-08-05 |
| EP2085513B1 EP2085513B1 (en) | 2011-09-28 |
Family
ID=40577968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08168942A Not-in-force EP2085513B1 (en) | 2008-01-31 | 2008-11-12 | Pressing unit |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2085513B1 (en) |
| AT (1) | ATE526450T1 (en) |
| DE (1) | DE102008000199A1 (en) |
| PL (1) | PL2085513T3 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010028923A1 (en) * | 2008-09-15 | 2010-03-18 | Voith Patent Gmbh | Press-on unit for a paper, cardboard, or tissue machine |
| WO2012112117A1 (en) | 2011-02-18 | 2012-08-23 | Metso Paper Karlstad Ab | A press device with an extended nip, a paper making machine and a method of operating a press device |
| CN103946447A (en) * | 2011-12-07 | 2014-07-23 | 瓦尔梅特有限公司 | A paper making machine, an extended nip roll and a method of producing tissue paper |
| US8871060B2 (en) | 2011-07-12 | 2014-10-28 | Valmet Ab | Method and a machine for producing a structured fibrous web of paper |
| EP2896743A1 (en) | 2014-01-20 | 2015-07-22 | Valmet S.p.A. | A process and a machine for making a tissue paper web |
| DE102014208159A1 (en) | 2014-04-30 | 2015-11-05 | Voith Patent Gmbh | pressing unit |
| CN108166303A (en) * | 2017-12-22 | 2018-06-15 | 江苏华东造纸机械有限公司 | Shoe press loading device |
| WO2018114467A1 (en) | 2016-12-19 | 2018-06-28 | Valmet Aktiebolag | A method for making tissue paper |
| WO2019201861A1 (en) | 2018-04-19 | 2019-10-24 | Valmet Aktiebolag | Method and a machine for producing a tissue web |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112014025803B1 (en) | 2012-04-19 | 2021-09-08 | Valmet Aktiebolag | Elongated Squeeze Roller, Elongated Squeeze PRESS USING THE Elongated Squeeze ROLLER, PAPER MAKING MACHINE AND METHOD OF OPERATING AN Elongated Squeeze PRESS |
| SE542214C2 (en) | 2018-10-12 | 2020-03-10 | Valmet Oy | A tissue paper making machine and a method of operating a tissue paper making machine |
| CN116348626B (en) | 2020-10-21 | 2024-12-03 | 维美德股份公司 | Yankee dryer and paper machine for household paper |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6045658A (en) * | 1998-06-03 | 2000-04-04 | Beloit Technologies, Inc. | Extended nip press apparatus |
| WO2004079090A1 (en) * | 2003-03-04 | 2004-09-16 | Metso Paper, Inc. | Method and device for pressing a paper web |
| WO2005042834A1 (en) | 2003-10-31 | 2005-05-12 | Voith Paper Patent Gmbh | Pressing device |
-
2008
- 2008-01-31 DE DE102008000199A patent/DE102008000199A1/en not_active Withdrawn
- 2008-11-12 PL PL08168942T patent/PL2085513T3/en unknown
- 2008-11-12 EP EP08168942A patent/EP2085513B1/en not_active Not-in-force
- 2008-11-12 AT AT08168942T patent/ATE526450T1/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6045658A (en) * | 1998-06-03 | 2000-04-04 | Beloit Technologies, Inc. | Extended nip press apparatus |
| WO2004079090A1 (en) * | 2003-03-04 | 2004-09-16 | Metso Paper, Inc. | Method and device for pressing a paper web |
| WO2005042834A1 (en) | 2003-10-31 | 2005-05-12 | Voith Paper Patent Gmbh | Pressing device |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010028923A1 (en) * | 2008-09-15 | 2010-03-18 | Voith Patent Gmbh | Press-on unit for a paper, cardboard, or tissue machine |
| WO2012112117A1 (en) | 2011-02-18 | 2012-08-23 | Metso Paper Karlstad Ab | A press device with an extended nip, a paper making machine and a method of operating a press device |
| US8673118B2 (en) | 2011-02-18 | 2014-03-18 | Valmet Aktiebolag | Press device with an extended nip, a paper making machine and a method of operating a press device |
| US8871060B2 (en) | 2011-07-12 | 2014-10-28 | Valmet Ab | Method and a machine for producing a structured fibrous web of paper |
| CN103946447B (en) * | 2011-12-07 | 2017-01-18 | 维美德瑞典公司 | A paper making machine and a method of producing tissue paper |
| CN103946447A (en) * | 2011-12-07 | 2014-07-23 | 瓦尔梅特有限公司 | A paper making machine, an extended nip roll and a method of producing tissue paper |
| CN104831576B (en) * | 2011-12-07 | 2017-05-17 | 维美德瑞典公司 | Paper making machine, extended nip roll and method of producing tissue paper |
| CN104831576A (en) * | 2011-12-07 | 2015-08-12 | 维美德瑞典公司 | Paper making machine, extended nip roll and method of producing tissue paper |
| EP2910679A1 (en) | 2011-12-07 | 2015-08-26 | Valmet Aktiebolag | An extended nip roll for a papermaking machine and a method of producing tissue paper |
| WO2015107094A1 (en) | 2014-01-20 | 2015-07-23 | Valmet S.P.A. | A process and a machine for making a tissue paper web |
| EP2896743A1 (en) | 2014-01-20 | 2015-07-22 | Valmet S.p.A. | A process and a machine for making a tissue paper web |
| DE102014208159A1 (en) | 2014-04-30 | 2015-11-05 | Voith Patent Gmbh | pressing unit |
| WO2018114467A1 (en) | 2016-12-19 | 2018-06-28 | Valmet Aktiebolag | A method for making tissue paper |
| CN108166303A (en) * | 2017-12-22 | 2018-06-15 | 江苏华东造纸机械有限公司 | Shoe press loading device |
| WO2019201861A1 (en) | 2018-04-19 | 2019-10-24 | Valmet Aktiebolag | Method and a machine for producing a tissue web |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2085513B1 (en) | 2011-09-28 |
| ATE526450T1 (en) | 2011-10-15 |
| DE102008000199A1 (en) | 2009-08-06 |
| PL2085513T3 (en) | 2012-02-29 |
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