EP1270806B1 - Stoffauflauf mit rotierenden Seitenwänden - Google Patents

Stoffauflauf mit rotierenden Seitenwänden Download PDF

Info

Publication number
EP1270806B1
EP1270806B1 EP01115459A EP01115459A EP1270806B1 EP 1270806 B1 EP1270806 B1 EP 1270806B1 EP 01115459 A EP01115459 A EP 01115459A EP 01115459 A EP01115459 A EP 01115459A EP 1270806 B1 EP1270806 B1 EP 1270806B1
Authority
EP
European Patent Office
Prior art keywords
stock solution
side walls
roll
head box
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01115459A
Other languages
English (en)
French (fr)
Other versions
EP1270806A1 (de
Inventor
Jim Doyle
Gerhard Dipl.-Ing. Lüttich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hogenkamp Researcj Inc
Original Assignee
Hogenkamp Researcj Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hogenkamp Researcj Inc filed Critical Hogenkamp Researcj Inc
Priority to EP01115459A priority Critical patent/EP1270806B1/de
Priority to DE60103990T priority patent/DE60103990T2/de
Priority to US10/183,839 priority patent/US20020195219A1/en
Publication of EP1270806A1 publication Critical patent/EP1270806A1/de
Application granted granted Critical
Publication of EP1270806B1 publication Critical patent/EP1270806B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/56Deckle frame arrangements
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/02Head boxes of Fourdrinier machines
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/02Head boxes of Fourdrinier machines
    • D21F1/028Details of the nozzle section
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/04Head boxes of cylinder machines
    • D21F1/046Head boxes of cylinder machines with non-immersed cylinder

Definitions

  • the present invention concerns a head box being part of a paper making machine and a method of making paper with said head box.
  • An inlet line feeds that stock solution to a nozzle that distributes the stock solution on the forming wire.
  • the forming wire is adapted to extract water from the stock solution as a first step of producing a layer of paper.
  • the hydrodynamic part of the paper making machine including inlet line and nozzle is usually called head box.
  • US 5,833,808 is directed to the control of the edge flow of stock solution in the headbox nozzle through adjustable valves positioned in edge tubes employing fiber orientation sensors.
  • US 1,687,447 discloses a paper making machine wherein the width of an opening can be varied in a lateral direction parallel to the roll that feeds the forming wire. This is accomplished by a wall being movable by a threaded shaft. The wall forms an end border of the stock supply chamber that is positioned above the roll carrying the forming wire.
  • US 1,772,484 discloses a paper making machine of the Fourdrinier type showing tapered portions on the end parts of a roll in order to effectively prevent the stock spreading out over the edge portions of the forming wire under a shaking action.
  • the disclosed machine "cuts off" the edges of the stock formed on the forming wire to attain sharp edges.
  • Document DE 198 19 659 A1 discloses a fourdrinier section of a paper making machine that has a gap between the fourdriniers to extract water from the wet pulp web in the center.
  • the fourdrinier gap is sealed at the sides using seals and has a drive synchronized with the fourdrinier drive.
  • US 6,033,527 is concerned with the improvement of the uniformity of the velocity profile of the stock solution across the nozzle opening. It is proposed to use pond sides of the nozzle that are angled inwardly. Further, columns of outer tubes of the tube bank may also be angled inwardly.
  • the present invention has the object to improve the performance of a head box for a paper making machine and a related paper making method in view of a high production velocity with a simultaneously good homogeneity of the produced paper.
  • a head box for a paper making machine that has a stock solution inlet line for feeding stock solution, a nozzle for being fed with said stock solution by said inlet line, and for spraying said stock solution on a forming wire of said paper making machine during a rotating movement of said forming wire on a roll relative to said nozzle, wherein said nozzle has an output opening to be positioned directly adjacent said forming wire, side walls being provided mutually opposed for essentially inhibiting stock solution flowing out in the axial direction, wherein the side walls are rotatable with said roll.
  • the invention is characterized in that the sidewalls define a width of said output opening in an axial direction of said roll for inhibiting stock solution flowing out of said output opening in said axial direction.
  • the invention is related to a method of making paper using such a head box, that is characterized in that said side walls define a width of said output opening in a axial direction of the roll for inhibiting stock solution flowing out of said output opening in said axial direction.
  • the inventors have discovered that a relevant reason for non-homogeneities of the paper are based on the fact that the stock solution in the nozzle, especially at the nozzle output opening, is not as fast at the outer borders of the usually slit-formed opening as in the middle. This can be understood by the friction of the stock solution at the outer side walls at the borders. In contrast to the borders, the parts of the stock solution flowing in the middle of the nozzle come in contact only with a so-called upper lip and a so-called lower lip or with one of the lips and the surface of the roll and the forming wire. The parts of the stock solution flowing at the borders suffer from additional friction at the side walls adjacent the ends of the inner sides of the lips.
  • the basic idea underlying this invention is to provide a construction in which the side walls at the last part of the nozzle adjacent the opening to the roll and the forming wire are movable with the roll so that they can be moved along with the stock solution flow.
  • the head box as defined by the invention is to be understood in the conventional sense, i.e. as the hydrodynamic unit of the paper making machine with that line and nozzle but without the roll referred to above and in the following.
  • a head box according to the invention that shall replace a conventional head box in a paper making machine could optionally also comprise a new roll for the paper making machine.
  • This roll could be specially adapted to the construction of the movable side walls and could also be a unit with these.
  • a head box according to the enclosed claims is already given by a head box without roll but with side walls according to the invention.
  • a set including the roll with the head box is a preferred embodiment of the invention.
  • the invention also refers to the paper machine as a whole.
  • said slit opening is defined essentially only by said movable side walls and by the so called lips of the nozzle being the border of the slit opening between the side walls and being opposed to each other.
  • the lips are fixed with regard to the rotating movement of the roll and the side walls, of course.
  • at least one of the lips can be movable in other respect, e.g. with regard to an adjustability of the distance between the lip and the forming wire.
  • the flow direction of the stock solution within the nozzle is directed in a direction more or less tangential to the roll. This means that the slit form of the opening appears in cross-section perpendicular to the flow direction.
  • the lower lip usually ends upstream from the upper lip so that there is an area of stock solution flow in which the channel of flow is defined also by the forming wire being transported on the roll and the roll underlying the forming wire and possibly appearing beneath the borders of the forming wire, instead of the lower lip.
  • the opening of the nozzle to which the invention refers appears at the end of the lower lip where the first contact of the stock solution with the forming wire takes place and where movable sidewalls shall be present.
  • these movable sidewalls should preferably guide the stock solution flow until the end of the upper lip.
  • the movable sidewalls are annular and thus go around the complete circumference of the roll.
  • said lips comprise side parts directly adjacent said annular side walls and sealed against the side walls in order to keep the stock solution within the nozzle as regards the direction perpendicular to the main flow direction.
  • These side parts can be integral parts of one of the lips or separate parts mounted to the lips in a sealing manner. It is further preferred, that said side parts are at least in part positioned radially outwards of said annular side walls. This improves the possibilities for sealing between the side parts and the side walls. For illustration, it is referred to the description of the embodiments.
  • the pressure water sealing has the first advantage to allow high relative velocities between the side walls and the side parts without substantial friction problems in view of temperature, power loss or durability.
  • the pressure water sealing allows to provide for some water flow from the sealing directed to the stock solution. This can be advantageous to inhibit a congestion of stock solution or solid parts of stock in the border areas of the nozzle, i.e. in the region of the side wall. When there is a small but more or less continuous water flow from the sealing to the main stock solution flow, the border areas will be kept free.
  • sealing rings e.g. of elastomers
  • conventional bearings as roller bearings.
  • a container filled with a pressurized fluid water, air and the like can be used to press the sealing ring against a sealing surface.
  • the sealing rings are pressed against those sealing surfaces that shall rotate relative to the sealing itself in order to protect the above mentioned container.
  • the container itself can be a closed container e.g. of plastic with fluid contents, but can also be a conduct that is fed by an exterior fluid source.
  • the side walls can, but need not be parts of the roll.
  • the side walls are axially movable relative to the roll in a limited manner. This can be preferred in order to compensate for some axial movements of the forming wire that regularly occur during the transport of the forming wire on the roll. This applies especially to long-wire machines or so-called Fourdrinier machines as well as to twin-wire and to inclined-wire machines. These Fourdrinier machines are a preferred application for the invention independent from the axial movability mentioned above. In case of a Fourdrinier paper making machine, the roll mentioned so far in this description is the so called breast roll.
  • the lips When having axially movable side walls, the lips can be fixed relative to the side walls or relative to the roll as regards this axial movement. In the one case, the lips are moved together with the side walls in the axial direction, in the other case, there must be some free space at the connection between the lips and the side walls (or the side parts of the lips and the side walls to be precise) to compensate for the axial movement.
  • the side walls are fixed to the roll it is preferred that they have tapered inward surfaces that are adapted to allow some axial movement but to inhibit excessive axial movement of the forming wire.
  • concave tapered surfaces are preferred, where the term concave is to be understood as seen in a section along the axial direction.
  • a forming wire can run up said tapered surfaces for some distance but is forced to increase its length in the circumferential direction of the roll thereby.
  • a backdriving force can be created that inhibits too large axial movements.
  • this backdriving force is rapidly increasing with the axial movement distance of the forming wire.
  • reference numeral 1 shows a breast roll of a Fourdrinier (long wire) paper making machine. Only the (in the sense of the figure) right portion of the breast roll is shown. 2 shows a part of an axis of breast roll 1, the axial direction being shown as a dash-dotted line in figure 1 as well as in figure 2 and 3.
  • a conventional forming wire is numerated with 3 and only schematically shown in section.
  • 4 is a concentric ring on breast roll 1, being an integral part of breast roll 1 and embodying an annular movable side wall according to the invention.
  • This side wall 4 shows a concavely tapered inward surface 5 on which forming wire 3 can run up as sketched in figure 1.
  • FIG. 6 is an upper lip of the nozzle of the paper making machine that is provided with a side part 7 gripping around side wall 4 in U-shape manner.
  • a conventional sliding sealing 8 is positioned between the outer arm of side part 7 and the outer side of movable side wall 4. Sealing 8 prevents stock solution in the channel between upper lip 6, breast roll 1, side wall 4 with surface 5 and wire 3 from flowing out. It is adapted to withstand a fast relative movement between side parts 7 and side wall 4.
  • 9 is a stabilization structure for improving the rigidity of upper lip 6 with side part 7 (and connecting the shown side part with the opposed not shown side part) and is without fundamental importance for the invention.
  • upper lip 6 and side wall 4 with surface 5 together with breast roll 1 and forming wire 3 define a channel for stock solution flow in which only upper lip 6 does not participate in the rotating movement of breast roll 1 and wire 3.
  • a limited axial movement of forming wire 3 is possible according to the concave shape of surface 5 with relatively large radius of curvature.
  • the second side of breast roll 1 and the nozzle (parts 6, 7, 8, 9) is symmetrical.
  • the distance between shown side wall 4 and the second non-shown side wall is somewhat larger than the width of forming wire 3 in order to allow some oscillation of wire 3.
  • FIG. 3 Before a modification of this embodiment is shown along with an explanation of figure 2, reference is made to figure 3. Identical numerals refer to the same parts as in figure 1.
  • Figure 3 is seen in the axial direction so that breast roll 1 appears as a circle.
  • Wire 3 runs around breast roll 1 along only somewhat less than half of its circumference and spreads to other transport rolls as usual in Fourdrinier paper making machines. That run of wire 3 that is approximately vertical in figure 3 carries the stock solution away from the channel as described in connection with figure 1 and extracts water from the stock solution.
  • the stock solution originates from nozzle 10 that is fed by means of a manifold 11 and a header 12 of a conventional stock solution inlet line.
  • nozzle 10 Downstream from manifold 11 begins nozzle 10 with upper lip 6 and a lower lip 14 shown in figure 3. It can be seen that upper lip 6 and lower lip 14 narrow the dimension of the channel for the stock solution in one direction perpendicular to the flow direction. However, in the second direction perpendicularly to the flow, the channel is as broad as breast roll 1 (including manifold 11 and thus fed from several parallel tubes of tube bank 12).
  • lower lip 14 When arriving at the circumference of breast roll 1 with lower lip 14 in a nearly tangential manner, lower lip 14 ends. Thus, the opening of nozzle 10 at breast roll 1 is situated at that end of lower lip 14. Further, upper lip 6 projects in a manner concentrical to breast roll 1 and in a nearly constant distance from the circumference of breast roll 1 for approximately a quarter of said circumference. This is in order to guide the stock solution already on wire 3 until wire 3 becomes distant from the circumference of breast roll 1. Thus, a channel is formed without lower lip 14, as can be seen in the section of figure 1.
  • Figure 1 shows that side walls 4 are concentrical rings around the complete circumference of breast roll 1.
  • Figure 3 further shows that nozzle 10 is held by a pivoting device 13 so that namely upper lip 6 can be pivoted around the axis given at 13. This helps to adjust the height defined by upper lip 6 above wire 3 at the end of upper lip 6 and thus helps to define the thickness of the stock layer at this point.
  • side part 7 of upper lip 6 extends around the complete circumference of annular side wall 4 which is necessary in order to guarantee the sealing function of sealing 8.
  • Figure 2 shows a second embodiment and can be directly compared to figure 1.
  • the left side of breast roll 1 is shown.
  • Identical numerals refer to similar components.
  • Upper lip 6' has a non-integral side part 7' being fixed to upper lip 6' by means of bolts.
  • Side wall ring 4' shows a somewhat different circumferential surface but an analogous concave inward surface 5.
  • a pressure water sealing 15 is provided between the modified circumferential surface of side wall 4' and an inner surface of side part 7'.
  • This pressure water sealing 15 is fed by a pressure water conduit 16 feeding pressure water into a first ring space 17 distributing pressure water around the complete circumference of ring 4'. Therefrom, the pressure water is pressed though very small slits being the actual pressure water sealing 15 and connecting first inner space 17 with second ring spaces 18. These slits are directed radially and have an axial dimension of the order of 0.1 mm. This gives a good sealing effect and minimizes water consumption. From the outer second ring space 18, the sealing water flows to the exterior and can be recovered, if necessary. From the inner second ring space 18, the pressure water flows into the channel of the stock solution flow, as long as in the region of upper lip 6'. This inhibits congestions as explained earlier.
  • First and second ring spaces 17 and 18 have a varying volume depending on the height that is given by the adjustability of upper lip 6' (compare pivoting means 13 in figure 3).
  • Figures 4, 5 and 6 show a third embodiment and show a left and a right side of a breast roll 1' with sectional structure of a nozzle as in figures 1 and 2 (the middle of breast roll 1' is omitted).
  • breast roll 1' differs from the embodiments of figures 1, 2 and 3 in that annular side walls 4" are not an integral part of breast roll 1'. Instead, annular side walls are implemented by rings 4" that are axially shiftable relative to breast roll 1'. Therefore, a slide bush 19 is provided between each side wall ring 4" and pressed roll 1'. Additionally, elastomer sealings 20 inhibit stock solution flowing therethrough.
  • side wall rings 4" are slideable against modified side parts 7" fixedly mounted to a stabilization and holding structure 9' (hollow section) of an upper lip 6".
  • Sealing 15' essentially consists in a narrow slit between a circumferential surface of each side wall ring 4" and an inner circumferential surface of respective side part 7". Pressure water flows through inlet 16' into a first ring space 17' and therefrom through sealing slits 15' to the exterior and to a second ring space 18' that is connected to the interior channel by means of inner sealing slit 15'.
  • a shifting movement of side wall rings 4" relative to breast roll 1' goes along with a shifting between side wall rings 4" and upper lip 6" with side part 7" because the latter are in fixed position relative to breast roll 1'. Therefore, ring spaces 17' and 18' vary in volume and can even disappear as appears from figures 5 and 6.
  • upper lip 6 has a width that is somewhat smaller than the distance between both side wall rings 4". This means that stock solution will flow up to inner sealing slit 15' but not beyond. Congestions will be prevented by pressure water coming therethrough.
  • the main difference between the third embodiment in figures 4, 5 and 6 and the first and the second embodiments is the axial shiftability of side wall rings 4" in relation to breast roll 1' and upper lip 6".
  • the third embodiment and the second embodiment have the pressure water sealing in common.
  • Figures 7 and 8 describe a last embodiment of the invention.
  • Figure 7 shows a view analogous to figures 1, 2, 4, 5, 6, whereas figure 8 can be compared to figure 3. Again, similar parts are given identical reference numerals.
  • axially movable side wall rings 4''' are mounted on a breast roll 1".
  • Sliding keys 21 for transmitting the rotating movement and allowing an axial movement, and sealings 20' are shown.
  • An upper lip 6"' is provided between side wall rings 4''' and slides against them during rotation of breast roll 1" and side walls 4"'.
  • a sealing is provided there-between but not shown in figure 7.
  • Side wall rings 4''' are mounted at structural parts 22 of the nozzle by means of roller bearings 23. Between structural parts 22 and side wall rings 4''', an elastomer sealing ring 24 and, axially outwards of ring 24, a pressure air container ring 25 is provided (on each side naturally). Pressure air container ring 25 is adapted to press sealing ring 24 axially inwardly in order to improve its sealing properties. Parts 24 and 25 do not participate in the rotating movement, i.e. side wall rings 4''' slide against sealing rings 24.
  • the movement of the nozzle is activated by a movement drive 27 symbolized in the lower left part of figure 7 and acting on manifold 11'.
  • Drive 27 can be a pneumatic, hydraulic or electric motor drive. The details of a shiftable support of the nozzle are not shown but obvious to the expert.
  • the movement of the nozzle with drive 27 is activated in response to a signal from a (not shown) optical sensor that detects the position of forming wire 3.
  • manifolds 11 and 11' (being somewhat longer) and header 12 can have various advantageous structures in order to further improve the homogeneity of the paper produced.
  • manifolds 11 and 11' can consist of single pipes of various section forms, e.g. square or circular.
  • the fourth and the third embodiments have in common the axial shiftability of side walls 4" and 4"'.
  • the differences comprise i.a. pressure water sealings 15' in contrast to sealing 24, 25 and the shiftability of lips 6"' and 14' and the rest of the nozzle in contrast to the static nozzle of the third embodiment.
  • the first and the second embodiments do not have axially shiftable parts besides the usually unavoidable movements of forming wire 3' (in case of a Fourdrinier machine).
  • the structure is somewhat more simple, however, there might be some increased wear of forming wire 3 at the borders depending on its quality.
  • All four embodiments produce paper with very good homogeneity. This refers especially to both the homogeneity of the fiber orientation in the paper (especially at the outer borders in the width direction) as well as the fiber distribution homogeneity.
  • the fiber orientation is the ratio of fiber lying in a defined direction, e.g. the machine direction compared to the cross direction.
  • the fiber distribution is the relative weight of fibers per unit area across the width of the machine. The homogeneities of both have been a problem with various machines of the prior art.

Landscapes

  • Paper (AREA)

Claims (15)

  1. Stoffauflauf für eine Papiermaschine mit einer Papierstoffeinströmleitung (11, 11', 12) zum Zuführen von Papierstoff,
    einer Düse (4", 4"', 6-6"', 14, 14') zum mit dem Papierstoff durch die Einströmleitung (11, 11', 12) Versorgtwerden und zum Aufsprühen des Papierstoffs auf ein Sieb (3) der Papiermaschine während einer Drehbewegung des Siebes (3) auf einer Walze (1-1") relativ zu der Düse (4", 4"', 6-6"', 14, 14'),
    wobei die Düse (4", 4"', 6-6"', 14, 14') eine direkt dem Sieb (3) benachbart angeordnete Ausstoßöffnung aufweist,
    wobei einander entgegengesetzte Seitenwände (4-4"') zum im Wesentlichen ein Ausströmen von Papierstoff in der axialen Richtung Verhindern vorgesehen sind,
    wobei die Seitenwände (4-4"') bei der Drehbewegung relativ zu der Düse (4", 4"', 6-6"', 14, 14') mit der Walze (1-1") drehbar sind,
    dadurch gekennzeichnet, dass die Seitenwände eine Breite der Ausstoßöffnung in einer axialen Richtung der Walze (1 -1") begrenzen, um einem Ausströmen von Papierstoff aus der Ausstoßöffnung in der axialen Richtung entgegenzuwirken.
  2. Stoffauflauf nach Anspruch 1, bei dem die Seitenwände (4-4"') ringförmig sind und dazu ausgelegt sind, zu der Walze (1-1") konzentrisch zu liegen.
  3. Stoffauflauf nach Anspruch 2, bei dem die Düse (4", 4"', 6-6"', 14, 14') Lippen (6-6"', 14, 14') aufweist, von denen zumindest eine Seitenteile (7-7") aufweist, die zu den ringförmigen Seitenwänden (4-4"') direkt benachbart sind, wobei zwischen den Lippenseitenteilen (7-7") und den Seitenwänden (4-4"') eine Dichtung (8, 15; 15', 24, 25) vorgesehen ist, um ein Ausströmen von Papierstoff im Wesentlichen zu verhindern und eine Drehbewegung der Seitenwände (4-4"') zusammen mit der Walze (1-1 ") relativ zu den Lippenseitenteilen (7-7") zu erlauben.
  4. Stoffauflauf nach Anspruch 3, bei der die Dichtung eine Druckwasserdichtung (15, 15') aufweist.
  5. Stoffauflauf nach Anspruch 4, bei der die Druckwasserdichtung (15, 15') dazu ausgelegt ist, ein gewisses Ausströmen von Wasser aus der Dichtung (15, 15') in den Papierstoff zuzulassen, um einer Papierstoffverstopfung an den Seitenwänden (4, 4"') entgegenzuwirken.
  6. Stoffauflauf nach einem der vorstehenden Ansprüche, bei dem die Seitenwände (4, 4"') dazu ausgelegt sind, axial relativ zu der Walze (1, 1") beweglich zu sein, um eine gewisse Axialbewegung des Siebes (3) während der Bewegung auszugleichen.
  7. Stoffauflauf nach Anspruch 6, bei der die Düse (4"', 6"', 14') im Hinblick auf die axiale Beweglichkeit an den Seitenwänden (4"') festgelegt ist.
  8. Stoffauflauf nach Anspruch 6 oder 7 mit einem Bewegungsantrieb (27) für die axiale Beweglichkeit und mit einem Sensor zum Erfassen einer Position des Siebes (3) in der axialen Richtung, wobei der Bewegungsantrieb (27) ansprechend auf den Siebpositionssensor steuerbar ist.
  9. Stoffauflauf nach einem der Ansprüche 3-8, bei dem die Dichtung Dichtringe (24) und elastische Druckfluidbehälter (25) zum Andrücken der Dichtringe (24) gegen Dichtflachen aufweist.
  10. Stoffauflauf nach einem der Ansprüche 1-5, bei dem die Seitenwände (4, 4') dazu ausgelegt sind, an der Walze (1) festgelegt zu sein, und schräge Oberflächen (5) an ihren Innenseiten aufweisen, um eine Axialbewegung des Siebes (3) auf der Walze (1) zuzulassen und einer übermäßigen Axialbewegung des Siebes (3) auf der Walze (1) entgegenzuwirken.
  11. Stoffauflauf nach Anspruch 10, bei dem die schrägen Oberflächen (5) im Schnitt entlang der axialen Richtung konkav sind.
  12. Stoffauflauf nach einem der vorstehenden Ansprüche, der ausgelegt ist für eine Fourdrinier- oder Doppelsieb- oder Schrägsieb-Papiermaschine.
  13. Stoffauflauf nach einem der vorstehenden Ansprüche ausgestattet mit der Walze (1-1").
  14. Verfahren zur Papierherstellung unter Verwendung eines Stoffauflaufs nach einem der vorstehenden Ansprüche und mit den Schritten
    Vorsehen einer Papierstoffeinströmleitung (11, 11', 12) zum Zuführen von Papierstoff,
    Vorsehen einer Düse (4", 4"', 6-6"', 14, 14') zum durch die Einführleitung (11, 11', 12) mit dem Papierstoff Versorgtwerden,
    Vorsehen eines Siebes (3) zum Aufnehmen des Papierstoffs aus der Düse (4", 4"', 6-6"', 14, 14') und zum Abführen von Wasser aus dem Papierstoff, und
    Vorsehen einer Walze (1-1") für eine Drehbewegung zum Transportieren des Siebes (3),
    wobei die Seitenwände (4-4"') einander entgegengesetzt vorgesehen sind und
    wobei die Düse (4", 4"', 6-6"', 14, 14') aufweist
    eine dem Sieb (3) direkt benachbarte Ausstoßöffnung,
    wobei die Seitenwände ein Ausströmen des Papierstoffs in der axialen Richtung im Wesentlichen verhindern,
    wobei die Seitenwände (4-4"') bei der Drehbewegung bei der Papierherstellung mit der Walze (1-1") drehbar sind,
    dadurch gekennzeichnet, dass die Seitenwände eine Breite der Ausstoßöffnung in einer axialen Richtung der Walze (1-1") begrenzen, um einem Ausströmen von Papierstoff aus der Ausstoßöffnung in der axialen Richtung entgegenzuwirken.
  15. Papiermaschine mit einem Stoffauflauf nach einem der Ansprüche 1-13.
EP01115459A 2001-06-26 2001-06-26 Stoffauflauf mit rotierenden Seitenwänden Expired - Lifetime EP1270806B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01115459A EP1270806B1 (de) 2001-06-26 2001-06-26 Stoffauflauf mit rotierenden Seitenwänden
DE60103990T DE60103990T2 (de) 2001-06-26 2001-06-26 Stoffauflauf für Papiermaschine mit verbesserter Düse für Papierstoff
US10/183,839 US20020195219A1 (en) 2001-06-26 2002-06-25 Head box for paper making machine with improved nozzle for stock solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01115459A EP1270806B1 (de) 2001-06-26 2001-06-26 Stoffauflauf mit rotierenden Seitenwänden

Publications (2)

Publication Number Publication Date
EP1270806A1 EP1270806A1 (de) 2003-01-02
EP1270806B1 true EP1270806B1 (de) 2004-06-23

Family

ID=8177834

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01115459A Expired - Lifetime EP1270806B1 (de) 2001-06-26 2001-06-26 Stoffauflauf mit rotierenden Seitenwänden

Country Status (3)

Country Link
US (1) US20020195219A1 (de)
EP (1) EP1270806B1 (de)
DE (1) DE60103990T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080077081A (ko) * 2005-08-30 2008-08-21 인더스트리얼 세라믹 솔루션스, 엘엘씨 통합된 다층 세라믹 섬유 필터 종이 및 방법
EP1987329B1 (de) * 2006-02-01 2011-08-03 AstenJohnson, Inc. Stofflauf und materialausgabesystem für eine papierherstellungsmaschine
EP2772584A1 (de) * 2013-02-27 2014-09-03 Valmet Technologies, Inc. Verfahren und Anordnung für einen Fasernetzproduktionslinie
CN110016830B (zh) * 2019-04-16 2023-06-20 华南理工大学 一种斜网成型器用的非接触式密封装置及方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1687447A (en) * 1925-03-12 1928-10-09 Mead Pulp & Paper Company Paper-making machinery
US1772484A (en) * 1928-08-17 1930-08-12 Kalamazoo Vegets Le Parchment Paper-making machine
US5196091A (en) * 1991-10-29 1993-03-23 Beloit Technologies, Inc. Headbox apparatus with stock dilution conduits for basis weight control
US5833808A (en) * 1997-01-21 1998-11-10 Beloit Technologies, Inc. Method of controlling curl employing inline headbox edge flow control valve
DE19819659A1 (de) * 1997-05-15 1998-12-10 Voith Sulzer Papiermasch Gmbh Siebpartie sowie Verfahren zum seitlichen Abdichten des Formierspaltes einer Siebpartie
US6004431A (en) * 1998-02-24 1999-12-21 Beloit Technologies, Inc. Headbox with active local flow control
US6033527A (en) * 1998-07-06 2000-03-07 Beloit Technologies, Inc. Paper machine edge fiber alignment control by angled headbox sides

Also Published As

Publication number Publication date
US20020195219A1 (en) 2002-12-26
EP1270806A1 (de) 2003-01-02
DE60103990D1 (de) 2004-07-29
DE60103990T2 (de) 2005-07-14

Similar Documents

Publication Publication Date Title
US5647958A (en) Wire part of a machine for the manufacture of fibrous material webs
FI74501C (fi) Mikroturbulensgenerator foer inloppslaoda i pappersmaskin.
EP0719360B1 (de) Stoffauflauf für mehrere schichten
US6306261B1 (en) Dewatering device and process and glazing device and process
EP1270806B1 (de) Stoffauflauf mit rotierenden Seitenwänden
US6001179A (en) Coating medium applicator with guide surface
FI119029B (fi) Menetelmä ja laite kuiturainakoneen, kuten paperi- tai kartonkikoneen kuivatusosassa
CA2056771A1 (en) Web tip cutting arrangement for dry end of paper making machines
US20020108732A1 (en) Twin wire former for the production of a fiber web from a fiber suspension
JP3664857B2 (ja) 抄紙機ツインワイヤフォーマの脱水機器
KR960007935A (ko) 고속 제지기용 쌍 와이어 포머
JP4049846B2 (ja) 三層フローボックス
EP1244839B1 (de) Dichtungsanordnung für eine pulpentwässerungseinheit
US6502434B1 (en) Effluent shower for pulp washer
US4225386A (en) Headbox for a paper machine
US4443300A (en) Paper making machine with a filter cylinder
US8529733B2 (en) Twin fabric forming section with multiple drainage shoes
US6942761B1 (en) Press device and method of using the same
EP3913133A1 (de) Bandwalze für eine siebpartie einer maschine zur herstellung einer faserstoffbahn
FI101726B (fi) Säätövirtausjärjestelmä (menetelmä ja -laite) paperikoneen perälaatiko ssa
US6881302B2 (en) Former for use in paper production
EP1853759B1 (de) Für die verwendung in einem doppelsiebentwässerungsteil einer ganzstoffverarbeitungsmaschine geeignete entwässerungsanordnung
US3386148A (en) Fluid bearing table roll
GB1598718A (en) Method of and a device for adjusting a fibre web profile in a paper machine
FI110196B (fi) Menetelmä ja laite paperikoneen formerilla paperiradan poikkiprofiilin hallinnassa

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 CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20030627

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): DE FI

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FI

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60103990

Country of ref document: DE

Date of ref document: 20040729

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050324

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20081229

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090714

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110101