EP2230353A1 - Assembly on paper machines for setting a surface weight cross-section - Google Patents
Assembly on paper machines for setting a surface weight cross-section Download PDFInfo
- Publication number
- EP2230353A1 EP2230353A1 EP10002891A EP10002891A EP2230353A1 EP 2230353 A1 EP2230353 A1 EP 2230353A1 EP 10002891 A EP10002891 A EP 10002891A EP 10002891 A EP10002891 A EP 10002891A EP 2230353 A1 EP2230353 A1 EP 2230353A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- arrangement according
- dilution water
- cross
- distributor
- 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.)
- Withdrawn
Links
Images
Classifications
-
- 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
- D21F1/02—Head boxes of Fourdrinier machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
- B01F23/451—Mixing liquids with liquids; Emulsifying using flow mixing by injecting one liquid into another
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
- B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
- B01F25/4335—Mixers with a converging-diverging cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
- B01F33/813—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles mixing simultaneously in two or more mixing receptacles
-
- 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
- D21F1/02—Head boxes of Fourdrinier machines
- D21F1/022—Means for injecting material into flow within the headbox
Definitions
- the invention relates to an arrangement on paper machines for setting a basis weight cross profile with dilution water at headboxes for the production of paper or cardboard according to the preamble of claim 1.
- the special papers include, in particular, filter papers, nonwovens and decorative papers.
- the filter papers and nonwovens have a high proportion of pulp and paper Plastic fibers.
- the pulp and plastic fibers tend to form spinning in the flowing pulp suspension, ie the pulp stream.
- the headbox must therefore be designed so that the spinning is avoided.
- the decor papers have a high proportion of fillers and color particles which tend to form deposits on the walls of the flow channels in the flowing pulp suspension. This increases the cleaning effort of the headbox when changing grades.
- the headbox should therefore be designed so that deposits on the walls of the flow channels are minimized or avoided.
- the hydraulic headboxes for specialty papers are equipped with modules that allow water mixing to adjust the basis weight cross profile.
- the modules for the water mixing two partial streams of the material stream are mixed together with a dilution water stream.
- the mixture volume flow must remain constant regardless of the size of the dilution water volume flow.
- Out DE 42 11 291 C3 is a mixing device for mixing two liquids at a constant mixture flow rate for supplying the headbox of a paper machine known.
- the dilution water is fed via throttle lines laterally of the main power line.
- a disadvantage is the steep mixing angle, which leads to flow separations at the mixing point at high flow rates of the dilution water.
- Out DE 44 02 516 C2 is a valve or a throttle device known.
- the cavity of the valve, the dilution water is supplied tangentially, whereby a rotational component is generated in the region of the throttle point.
- a major disadvantage of this throttle device is that such rotating flow guides the white water with plastic fibers produce the spinning, which breaks the paper web can be caused.
- the object of the invention is therefore to provide an arrangement of paper machines for adjusting the basis weight cross profile with dilution water on headboxes for the production of paper or cardboard, which is constructed in a compact design and while the risk of spinning and deposits is low.
- Fig. 1 shows an arrangement of paper machines for setting a basis weight cross profile with dilution water on hydraulic headboxes for the production of paper or cardboard.
- the arrangement comprises a first cross-flow distributor 1 for a flow of material and a second cross-flow distributor 2 for dilution water, which convey a mixture flow of a machine-wide inflow chamber 4 of a hydraulic headbox 5 via tube bundle 3.
- the emerging from the headbox 5 mixture stream meets to a screen 6.
- the cross flow distributor 1 for the flow has an axis A, which extends transversely to the machine direction.
- the dilution water crossflow manifold 2 has an axis B extending adjacent to the axis A spatially located in an area between the cross flow distributor 1 and the array of tube bundles 3.
- the tube bundles 3 define a plane D transverse to the machine direction.
- Fig. 2 to Fig. 4 are connected to the cross-flow distributor 1 for the material flow by a divisible number n n partial flow section lines, of which two 7, 8 are connected to a respective mixing device 9.
- This connection is preferably symmetrical.
- the mixing devices 9 each have a mixture flow section line 10 which is connected to the machine-wide inflow chamber 4 of the head box 5.
- each constrictions 11 may be provided (see. Fig. 1 ). These constrictions 11 may be interchangeable for adaptation during variety changes.
- the flow resistance of each connected to a mixing device 9 partial flow section lines 7, 8 to each other are approximately equal to and smaller than the flow resistance of the mixture flow section line 10th
- the dilution water cross flow distributor 2 has a number of n / 2 dilution water lines 12.
- the mixing devices 9 each have a central bore 13 for incorporating one inflow-controlled dilution water line 12, preferably symmetrically between the two partial flow section lines 7, 8.
- a valve 14 is provided at the central bore 13 of each mixing device 9, for the passage of a controllable inflow of dilution water or arranged.
- the valves 14 are preferably formed as angle valves and actuated by actuators 15, preferably by a transverse profile control device, not shown, is controlled.
- the valve 14 is opened or closed in whole or in part.
- the valve 14 is here preferably formed by a cylinder rotatable about its axis with an L-shaped passage 16 for throttling the dilution water.
- the upstream side of the cylinder is connected via the dilution water line 12 to the dilution water crossflow distributor 2.
- the outflow side of the cylinder opens into the mixing device 9.
- the drives 15 on the one hand and the flow distributor 2 for dilution water on the other hand are preferably on opposite sides of the defined by the tube bundle 3 level D.
- a particularly space-saving arrangement of the device for the addition of diluting water while sensitive control of the amount of material across the width of the web and reducing the risk of deposits is possible.
- the centers of the partial flow section lines 7, 8 and the central bore 13 of the mixing device 9 are each on a line C, which in each case form an angle ⁇ with the axis A of the cross-flow distributor 1.
- the angle ⁇ can vary along the axis A.
- the angles ⁇ are preferably in the range 0 ° ⁇ ⁇ ⁇ 90 °.
- the angles ⁇ are particularly preferably in a range 30 ° ⁇ ⁇ ⁇ 60 °.
- the drives 15 can according to a second in Fig. 5 illustrated embodiment may be inclined to the axis A of the cross-flow distributor 1 for the flow of material.
- the partial flow section lines 7, 8 may have a non-circular cross-section for selectable adjustment of a cross-sectional enlargement exhibit. This training applies regardless of the inclination of the drives 15 to axis A.
- Fig. 5 shows, for example, an elliptical cross section.
- mixture flow section conduits (10) may have a non-circular cross-section for selectively setting a cross-sectional enlargement.
- the arrangement according to the invention can also be used in perforated roller headboxes, headboxes for round wire former or inclined wire headboxes.
- the inflow chamber 4 can connect to these different types of headboxes.
Abstract
Description
Die Erfindung betrifft eine Anordnung an Papiermaschinen zur Einstellung eines Flächengewichts-Querprofils mit Verdünnungswasser an Stoffaufläufen zur Herstellung von Papier oder Karton nach dem Oberbegriff des Anspruchs 1.The invention relates to an arrangement on paper machines for setting a basis weight cross profile with dilution water at headboxes for the production of paper or cardboard according to the preamble of
Die Einstellung des Flächengewichts-Querprofils mit Verdünnungswasser folgt aus der Zunahme der Anforderungen an die Qualität der Bahn, wofür die Gleichmäßigkeit der Faserorientierung über die Breite der Papier- oder Kartonbahn eine stets größere Rolle spielt. Durch die Zumischung von zusätzlichem Verdünnungswasser im Rohrverteiler wird die Stoffmenge feinfühlig über die Breite geregelt. Dies gilt insbesondere bei der Herstellung von Spezialpapieren.The adjustment of the basis weight cross profile with dilution water follows from the increase in the quality requirements of the web, for which the uniformity of the fiber orientation across the width of the paper or board web plays an ever greater role. By adding additional dilution water in the manifold, the amount of material is sensitively controlled across the width. This applies in particular to the production of special papers.
Zu den Spezialpapieren gehören insbesondere Filterpapiere, Vliese und Dekorpapiere. Die Filterpapiere und Vliese haben einen hohen Anteil an Zellstoff- und Kunststofffasern. Die Zellstoff- und Kunststofffasern neigen zur Bildung von Verspinnungen in der strömenden Faserstoffsuspension, d. h. dem Stoffstrom. Der Stoffauflauf muss deshalb so konzipiert werden, dass die Verspinnungen vermieden werden. Die Dekorpapiere haben dagegen einen hohen Anteil an Füllstoffen und Farbpartikeln, die in der strömenden Faserstoffsuspension dazu neigen, Ablagerungen an den Wänden der Strömungskanäle zu bilden. Das erhöht den Reinigungsaufwand des Stoffauflaufs beim Sortenwechsel. Der Stoffauflauf ist deshalb so zu gestalten, dass Ablagerungen an den Wänden der Strömungskanäle minimal gehalten oder vermieden werden.The special papers include, in particular, filter papers, nonwovens and decorative papers. The filter papers and nonwovens have a high proportion of pulp and paper Plastic fibers. The pulp and plastic fibers tend to form spinning in the flowing pulp suspension, ie the pulp stream. The headbox must therefore be designed so that the spinning is avoided. By contrast, the decor papers have a high proportion of fillers and color particles which tend to form deposits on the walls of the flow channels in the flowing pulp suspension. This increases the cleaning effort of the headbox when changing grades. The headbox should therefore be designed so that deposits on the walls of the flow channels are minimized or avoided.
Um diesen Anforderungen zu genügen, sind die hydraulischen Stoffaufläufe für Spezialpapiere mit Modulen ausgestattet, die die Wasserzumischung zur Einstellung des Flächengewichts-Querprofils erlauben. In den Modulen für die Wasserzumischung werden zwei Teilströme des Stoffstroms mit einem Verdünnungswasserstrom zusammengemischt. Der Gemischvolumenstrom muss dabei unabhängig von der Größe des Verdünnungswasser-Volumenstroms konstant bleiben.To meet these requirements, the hydraulic headboxes for specialty papers are equipped with modules that allow water mixing to adjust the basis weight cross profile. In the modules for the water mixing, two partial streams of the material stream are mixed together with a dilution water stream. The mixture volume flow must remain constant regardless of the size of the dilution water volume flow.
Aus
Aus
Aus
Aufgabe der Erfindung ist es daher, eine Anordnung an Papiermaschinen zur Einstellung des Flächengewichts-Querprofils mit Verdünnungswasser an Stoffaufläufen zur Herstellung von Papier oder Karton zu schaffen, die in kompakter Bauweise aufgebaut ist und dabei die Gefahr von Verspinnungen und Ablagerungen gering ist.The object of the invention is therefore to provide an arrangement of paper machines for adjusting the basis weight cross profile with dilution water on headboxes for the production of paper or cardboard, which is constructed in a compact design and while the risk of spinning and deposits is low.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This object is solved by the features of
Hierdurch wird eine Anordnung an Papiermaschinen geschaffen, die durch die Verwendung von Querstromverteilern für den Stoffstrom und das Verdünnungswasser eine konstante Einstellung des Geschwindigkeits- und Druckverlaufsprofils in der Suspension in einfacher Weise erlaubt. Die räumliche Anordnung der Volumenströme an Stoffstrom und Verdünnungswasser erfolgt in Verbindung mit Armaturen in Form von Ventilen für die Verdünnungswasserströme, die jeweils an einer Zentralbohrung der Mischeinrichtung angeordnet sind, so dass der Querstromverteiler für das Verdünnungswasser benachbart zu den Mischeinrichtungen angeordnet werden kann. Lange Anschlussleitungen als auch Leitungsübergänge werden vermieden, wodurch Ablagerungen und Verspinnungen ebenfalls vermieden werden als auch schnelle Sortenwechsel möglich sind. Durch die Position der Armatur ist die Regelung zudem direkter.As a result, an arrangement of paper machines is created, which allows a constant adjustment of the velocity and pressure profile in the suspension by the use of cross-flow distributors for the stream and the dilution water in a simple manner. The spatial arrangement of the flows of material flow and dilution water in conjunction with valves in the form of valves for the dilution water flows, which are respectively arranged on a central bore of the mixing device, so that the crossflow distributor for the dilution water adjacent to the mixing devices can be arranged. Long connecting lines as well as line transitions are avoided, whereby deposits and spinning are also avoided as well as rapid grade changes are possible. The position of the valve also makes the control more direct.
Weitere Vorteile und Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further advantages and embodiments of the invention can be found in the following description and the subclaims.
Die Erfindung wird nachstehend anhand der in den beigefügten Abbildungen dargestellten Ausführungsbeispiele näher erläutert.
-
Fig. 1 zeigt schematisch eine Seitenansicht eines Stoffauflaufs gemäß einem ersten Ausführungsbeispiel der erfindungsgemäßen Anordnung, -
Fig. 2 zeigt einen Ausschnitt ausFig.1 , -
Fig. 3 zeigt schematisch eine Draufsicht in Richtung X gemäßFig. 2 , -
Fig. 4 zeigt schematisch eine Seitenansicht in Richtung Y gemäßFig. 2 und -
Fig. 5 zeigt schematisch eine Seitenansicht entsprechendFig. 4 für ein zweites Ausführungsbeispiel der erfindungsgemäßen Anordnung.
-
Fig. 1 shows schematically a side view of a headbox according to a first embodiment of the arrangement according to the invention, -
Fig. 2 shows a sectionFig.1 . -
Fig. 3 schematically shows a plan view in the direction X according toFig. 2 . -
Fig. 4 schematically shows a side view in the direction Y according toFig. 2 and -
Fig. 5 schematically shows a side view accordinglyFig. 4 for a second embodiment of the arrangement according to the invention.
Die Anordnung umfasst einen ersten Querstromverteiler 1 für einen Stoffstrom und einen zweiten Querstromverteiler 2 für Verdünnungswasser, die über Rohrbündel 3 einen Gemischstrom einer maschinenbreiten Anströmkammer 4 eines hydraulischen Stoffauflaufs 5 zuleiten. Der aus dem Stoffauflauf 5 austretende Gemischstrom trifft auf ein Sieb 6. Der Querstromverteiler 1 für den Stoffstrom besitzt eine Achse A, die sich quer zur Maschinenlaufrichtung erstreckt. Der Querstromverteiler 2 für Verdünnungswasser besitzt eine Achse B, die sich benachbart zur Achse A erstreckt, und zwar räumlich angeordnet in einem Bereich zwischen dem Querstromverteiler 1 und der Anordnung der Rohrbündel 3. Die Rohrbündel 3 definieren eine Ebene D quer zur Maschinenrichtung.The arrangement comprises a
Wie
In den Gemischstrom-Sektionsleitungen 10 können jeweils Verengungen 11 vorgesehen sein (vgl.
Der Querstromverteiler 2 für Verdünnungswasser weist eine Anzahl n/2 Verdünnungswasserleitungen 12 auf. Die Mischeinrichtungen 9 weisen je eine Zentralbohrung 13 auf zum Einbinden je einer zuflussmengengesteuerten Verdünnungswasserleitung 12, vorzugsweise symmetrisch zwischen den jeweils zwei Teilstrom-Sektionsleitungen 7, 8. An der Zentralbohrung 13 einer jeden Mischeinrichtung 9 ist ein Ventil 14 zum Durchlass einer steuerbaren Zuflussmenge an Verdünnungswasser vorgesehen bzw. angeordnet. Die Ventile 14 sind vorzugsweise als Eckventile ausgebildet und über Antriebe 15 betätigbar, die vorzugsweise durch eine nicht dargestellte Querprofilregeleinrichtung gesteuert wird. Je nach Menge an zuzuleitendem Verdünnungswasser wird das Ventil 14 ganz oder teilweise geöffnet oder geschlossen.The dilution water
Das Ventil 14 wird hier vorzugsweise von einem um seine Achse drehbaren Zylinder mit einem L-förmigen Durchgang 16 zum Drosseln des Verdünnungswassers gebildet. Die Zuströmseite des Zylinders ist über die Verdünnungswasserleitung 12 mit dem Querstromverteiler 2 für Verdünnungswasser verbunden. Die Abströmseite des Zylinders mündet in die Mischeinrichtung 9.The
Die Antriebe 15 einerseits und der Querstromverteiler 2 für Verdünnungswasser andererseits liegen vorzugsweise auf gegenüberliegenden Seiten der durch die Rohrbündel 3 definierten Ebene D. Eine besonders platzsparende Anordnung der Einrichtung für die Zumischung von Verdünnungswasser unter gleichzeitig feinfühliger Regelung der Stoffmenge über die Breite der Bahn und unter Verringerung der Gefahr von Ablagerungen ist dadurch möglich.The
Wie
Die Antriebe 15 können gemäß einem zweiten in
Ferner können die Gemischstrom-Sektionsleitungen (10) einen unrunden Querschnitt zur wählbaren Einstellung einer Querschnittsvergrößerung aufweisen.Further, the mixture flow section conduits (10) may have a non-circular cross-section for selectively setting a cross-sectional enlargement.
Die erfindungsgemäße Anordnung ist auch einsetzbar bei Lochwalzen-Stoffaufläufen, Stoffaufläufen für Rundsieb-Former oder Schrägsieb-Stoffaufläufen. Die Anströmkammer 4 kann an diesen verschiedenen Arten von Stoffaufläufen anschließen.The arrangement according to the invention can also be used in perforated roller headboxes, headboxes for round wire former or inclined wire headboxes. The inflow chamber 4 can connect to these different types of headboxes.
Claims (15)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009014268A DE102009014268B3 (en) | 2009-03-20 | 2009-03-20 | Paper machine arrangement for manufacturing e.g. paper such as filter paper, has transverse flow distributers for respective material stream and dilution water, and valve provided at borehole for passage of flow amount to dilution water |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2230353A1 true EP2230353A1 (en) | 2010-09-22 |
Family
ID=41180766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10002891A Withdrawn EP2230353A1 (en) | 2009-03-20 | 2010-03-18 | Assembly on paper machines for setting a surface weight cross-section |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2230353A1 (en) |
CN (1) | CN101838949A (en) |
DE (2) | DE102009014268B3 (en) |
RU (1) | RU2010110528A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI122144B (en) * | 2010-04-08 | 2011-09-15 | Metso Paper Inc | Design element for an inlet box in a fiber web machine |
EP3088604B1 (en) * | 2015-04-28 | 2020-03-25 | Valmet Technologies Oy | Method and system for the optimization of properties of a multilayer fiber web in fiber web manufacture |
CN114749092B (en) * | 2022-03-14 | 2023-07-28 | 营口瑞丰科技有限公司 | Quantitative feeding device for feed production and processing |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4211291C2 (en) | 1992-04-03 | 1994-07-07 | Voith Gmbh J M | Mixing device and method for mixing two liquids at a constant mixture volume flow to supply the headbox of a paper machine |
EP0629739A1 (en) * | 1993-06-18 | 1994-12-21 | Voith Sulzer Papiermaschinen GmbH | Headbox for a paper machine |
EP0633416A1 (en) * | 1993-07-05 | 1995-01-11 | J.M. Voith GmbH | Device and procedure for throtteling a fluidal pulp slurry without getting choked |
DE4402516C2 (en) | 1993-07-05 | 1997-11-20 | Voith Gmbh J M | Device and method for the non-clogging throttling of a fluid suspension flow |
WO1997048851A1 (en) * | 1996-06-20 | 1997-12-24 | Valmet Corporation | Equipment for combining a dilution flow with the stock flow passed out of the inlet header in a paper/board machine |
WO1998001619A1 (en) * | 1996-07-04 | 1998-01-15 | Valmet Corporation | Equipment in connection with the headbox of a paper/board machine |
DE19909379C2 (en) | 1999-03-04 | 2001-10-18 | Pama Papiermaschinen Gmbh | Arrangement on paper machines for setting the basis weight cross section with dilution water |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE506322C2 (en) * | 1996-03-08 | 1997-12-01 | Valmet Karlstad Ab | Device for feeding stock to an inlet box in a paper machine |
US5938896A (en) * | 1997-09-30 | 1999-08-17 | Voith Sulzer Paper Technology North America, Inc. | Hydraulic increaser for a wet end of a paper-making machine |
DE10060050C2 (en) * | 2000-12-01 | 2002-11-14 | Pama Papiermaschinen Gmbh | Arrangement for setting the basis weight cross section with dilution water on paper machines |
-
2009
- 2009-03-20 DE DE102009014268A patent/DE102009014268B3/en not_active Expired - Fee Related
- 2009-06-17 DE DE202009008307U patent/DE202009008307U1/en not_active Expired - Lifetime
-
2010
- 2010-03-18 EP EP10002891A patent/EP2230353A1/en not_active Withdrawn
- 2010-03-19 CN CN201010142992A patent/CN101838949A/en active Pending
- 2010-03-19 RU RU2010110528/12A patent/RU2010110528A/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4211291C2 (en) | 1992-04-03 | 1994-07-07 | Voith Gmbh J M | Mixing device and method for mixing two liquids at a constant mixture volume flow to supply the headbox of a paper machine |
EP0629739A1 (en) * | 1993-06-18 | 1994-12-21 | Voith Sulzer Papiermaschinen GmbH | Headbox for a paper machine |
EP0633416A1 (en) * | 1993-07-05 | 1995-01-11 | J.M. Voith GmbH | Device and procedure for throtteling a fluidal pulp slurry without getting choked |
DE4402516C2 (en) | 1993-07-05 | 1997-11-20 | Voith Gmbh J M | Device and method for the non-clogging throttling of a fluid suspension flow |
WO1997048851A1 (en) * | 1996-06-20 | 1997-12-24 | Valmet Corporation | Equipment for combining a dilution flow with the stock flow passed out of the inlet header in a paper/board machine |
WO1998001619A1 (en) * | 1996-07-04 | 1998-01-15 | Valmet Corporation | Equipment in connection with the headbox of a paper/board machine |
DE19909379C2 (en) | 1999-03-04 | 2001-10-18 | Pama Papiermaschinen Gmbh | Arrangement on paper machines for setting the basis weight cross section with dilution water |
Also Published As
Publication number | Publication date |
---|---|
DE102009014268B3 (en) | 2010-04-08 |
RU2010110528A (en) | 2011-09-27 |
CN101838949A (en) | 2010-09-22 |
DE202009008307U1 (en) | 2009-10-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2379800B1 (en) | Headbox for a machine for producing a fibrous web | |
DE69913450T2 (en) | Headbox for the distribution of fiber suspension and additives | |
DE60219947T2 (en) | METHOD FOR PRODUCING A FIBROUS WEB AND MACHINE THEREFOR | |
WO2010069650A1 (en) | Headbox for a machine for producing a fibrous web | |
EP2309060A2 (en) | Curtain application device | |
DE102008054893A1 (en) | Headbox for a machine for producing a fibrous web | |
DE102008043145A1 (en) | Two-layer casserole for a machine for producing a two-layer fibrous web | |
DE102008054894A1 (en) | Headbox for a machine for producing a fibrous web | |
EP0632159A1 (en) | Headbox and process for making a multi-layer paper web | |
DE102009014268B3 (en) | Paper machine arrangement for manufacturing e.g. paper such as filter paper, has transverse flow distributers for respective material stream and dilution water, and valve provided at borehole for passage of flow amount to dilution water | |
EP0639239A1 (en) | Jet-speed control in a multi-layer headbox | |
EP1619298A3 (en) | Headbox of a machine for manufacturing a fibrous web, in particular a papier or board web | |
EP3491186B1 (en) | Flow module and method for producing a flow module for a flowbox of a papermaking machine | |
DE1511218B2 (en) | PAPER MASH FEEDING DEVICE FOR PAPER MACHINES | |
EP2487292A1 (en) | Head-box for a machine for producing a sheet of fibrous material | |
DE10324711A1 (en) | headbox | |
DE10230301A1 (en) | Paper-making fibre dispensing jets, have vortex generators causing pressure drop | |
EP2585633B1 (en) | Headbox for a machine for producing a fibre-material web | |
DE10208610B4 (en) | Method for distributing a pulp suspension in the headbox of a paper or board machine and headbox | |
DE10060050C2 (en) | Arrangement for setting the basis weight cross section with dilution water on paper machines | |
DE69935684T2 (en) | Flow control valve for the edge flows in a headbox of a paper machine | |
DE4237305C2 (en) | Turbulence insert with variable geometry for a headbox of a paper machine | |
DE4133501C2 (en) | Device for applying coating color on a fibrous web | |
DE102018120162A1 (en) | HEADBOX | |
DE102004056033A1 (en) | Material supplier for machine for producing fibrous sheets, especially of paper or cardboard, having distributor with tubular body and mixer to give even distribution of fiber suspension over machine widfh |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA ME RS |
|
17P | Request for examination filed |
Effective date: 20110316 |
|
17Q | First examination report despatched |
Effective date: 20140509 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20140612 |