EP2379799A1 - Stoffauflauf für eine maschine zur herstellung einer faserstoffbahn - Google Patents
Stoffauflauf für eine maschine zur herstellung einer faserstoffbahnInfo
- Publication number
- EP2379799A1 EP2379799A1 EP09740124A EP09740124A EP2379799A1 EP 2379799 A1 EP2379799 A1 EP 2379799A1 EP 09740124 A EP09740124 A EP 09740124A EP 09740124 A EP09740124 A EP 09740124A EP 2379799 A1 EP2379799 A1 EP 2379799A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- headbox
- metering
- channel
- pulp suspension
- fluid
- 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.)
- Granted
Links
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
-
- 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
- Headbox for a machine for producing a fibrous web
- the invention relates to a headbox for a machine for producing a fibrous web, in particular paper or board web, from at least one pulp suspension, comprising a feeding device feeding the at least one pulp suspension, having a downstream and a plurality of channels arranged in rows and in columns A distribution well plate having a downstream thereto, over the width of the headbox extending intermediate channel with a plurality of spaced in the width direction of the headbox means for preferably controllable / metered addition of a fluid in fluid streams in the at least one pulp suspension, wherein the single means each have a plurality each Zudosierkanalö Stamm and Zudosierkanalfar having, at different heights opening and connected to a common supply channel Zudosierkanäle comprises, with a st downstream turbulence generating means having a plurality of flow channels arranged in rows and in columns and with a headbox jet immediately adjacent to the turbulence generating means and having a nozzle gap.
- Such a headbox is known, for example, from German Offenlegungs DE 44 16 898 A1, DE 44 16 899 A1 and DE 44 16 909 A1.
- German laid-open specification DE 44 16 898 A1 shows a head box for a paper machine with a feed device for the stock suspension, with a guide device having a multiplicity of channels, a stream upwards to a guide means lying mixing chamber with a plurality of distributed across the headbox feeding means for a differing in its properties of the stock suspension zuzumischen- and with the guide means subsequent, an outlet gap for the stock suspension forming nozzle chamber.
- the feed devices for the fluid to be admixed extend essentially vertically in the mixing chamber and have a plurality of admixed openings arranged one above the other.
- German patent application DE 44 16 899 A1 shows a headbox for a paper machine with a feed device for the pulp suspension, a first having a plurality of channels guide means, a second plurality of channels having guide means, an intermediate mixing chamber, a subsequent, a Exit slit for the pulp forming nozzle chamber and a plurality of distributed over the headbox feed lines for the admixed fluid, wherein the vast majority of the channels of the guide means are positioned and dimensioned so that the outlet opening from the upstream guide means not with an entrance to the downstream Guide device is aligned.
- the supply lines for the admixing fluid have admixing openings, which for the most part are each aligned with an opening in the downstream guide device.
- German patent application DE 44 16 909 A1 shows a headbox for a paper machine with a feed device for the pulp suspension, a downstream adjoining provided with a plurality of channels guide means, a lying downstream, extending over the width of the headbox mixing chamber a plurality of distributed across the headbox, extending substantially in the direction of flow dividing walls and distributed across the headbox feeders for a zuzumischendes fluid with Zumischö réelleen, downstream of a further, a plurality of channels having guide means and a subsequent, an outlet gap for the stock suspension forming nozzle chamber.
- the supply means for the admixing fluid extend into the mixing chamber and the sectional area formed by the partitions in the mixing chamber begins in the region of the admixing openings, from where it extends substantially in the flow direction as far as the second guide means.
- the headboxes shown in these three documents form systems that can meet the particular technological requirements for good mixing quality of pulp suspension and fluid, sufficient volume flow stability, a low effective width and a low mapping offset more or less well or only partially.
- the mixing quality of pulp suspension and fluid is usually positively influenced by a good pre-distribution of the media in the height direction, by a large turbulence intensity in the media and by a long mixing distance for the media.
- a low dynamics at the metering point and a high pressure loss after the metering point have a favorable effect.
- the inventive design of the headbox of the type mentioned provides a most extensive, preferably complete avoidance of the disadvantages of the prior art and a much improved fulfillment of particular technological requirements.
- the headbox according to the invention has a technically simple and reliable Zudosiersystem, which is also still inexpensive and technically easy to perform.
- At least one, well-known to those skilled separator, in particular a blade be arranged. Should several separating elements, in particular
- the means designed in particular as a metering blade for preferably controllable metering of the fluid in partial fluid streams into the at least one pulp suspension is preferably arranged on the lower wall and / or on the upper wall of the intermediate channel.
- This embodiment is particularly useful for high-line turbulence generation means to limit the fluid inflow velocities in the individual fluid supply line.
- the two walls of the intermediate channel may be at least partially parallel to each other, convergent, divergent, stepped or spherically curved and arranged.
- the arrangement of the means for preferably controllable metered addition in at least one row is also possible. If the means for preferably regulatable / controllable metering are arranged in several rows, then they can also be arranged offset from one another.
- the means which is designed in particular as a metering blade, for metering preferably controllable metering can be made of at least one metal, such as a stainless steel, titanium or bronze, or a plastic, such as a thermosetting plastic, of a thermoplastic a (hard) rubber, made of a fiberglass, a CFK or the like consist.
- a plastic version in particular the materials polyamide (PA), polyphenylsulfone (PPSU), Teflon (PTFE), polyoxymethylene (POM) are advantageous.
- the common supply channel of the means for preferably regulatable / controllable metering may have a circular cross-sectional area with a diameter of 6 to 20 mm, preferably 10 to 15 mm, and the metering channel of the means for preferably controllable metering connected to the common supply channel may also have a circular cross-sectional area with a diameter of 2 to 10 mm, preferably from 4 to 6 mm.
- both the common supplier Supply channel and the Zudosierkanal - seen in the respective longitudinal direction - have a constant, a continuously converging or an abruptly widening channel cross-section.
- the Zudosierkanäle of the means for preferably adjustable / controllable metering, which opens at different heights, can be arranged at equal or approximately equal intervals.
- the means for preferably controllable metering may have a preferably equal or approximately equal spacing in the headbox width direction in the range of 10 to 100 mm, preferably 25, 33, 50 or 66 mm, and the means for preferably regulating / itself controllable metering may have a length - depending on the height of the intermediate channel - in the range of 60 to 350 mm, preferably from 100 to 250 mm, and a height in the range of 50 to 300 mm, preferably from 75 to 250 mm.
- the length of the metering blade in the direction of flow of the at least one pulp suspension designed for preferably controllable metered addition of the fluid in partial fluid streams into the at least one pulp suspension and the length of the intermediate channel are preferably in a ratio of 1: 1, 25 to 1: 5, preferably from 1: 1, 5 to 1: 3, in particular from about 1: 2. These value ranges have an effect, in particular, on the desired low effective width due to a directed and steady flow upstream of the metering point and low transverse flows at the metering point.
- the means designed as dosing means for preferably controllable metering of the fluid in partial fluid streams into the at least one pulp suspension preferably has a leading edge directed counter to the flow direction of the at least one pulp suspension, which is at an angle of 60 to 90 °, preferably 75 to 85 °, in particular of about 80 °, to the flow direction of the at least one pulp suspension runs.
- This embodiment has fluidic advantages and can carry away any dirt particles adhering to the leading edge due to a "vertical component" in the direction of the free middle end in which at least one pulp suspension has an end face with a width of at least 3 mm, preferably of at least 5 mm, in particular of about 10 mm, and / or at least on one side, preferably on both sides with a lateral rounding or chamfer Value in the range from 0.1 to 0.45, preferably from 0.33, in particular from 0.25, • the width of the medium, whereas the chamfer can have a chamfer angle in the range from 25 to 75 °, preferably from 30 to 60 °, in particular of 45 °.
- the means designed as dosing means for preferably controllable metering of the fluid in partial fluid streams into the at least one fibrous suspension preferably tapers at least on its side in the flow direction of the at least one fibrous suspension at least on one side, preferably on both sides, the preferably continuous taper a taper angle of not more than 20 °, preferably of not more than 10 °, in particular of not more than 7 °.
- the flow after the means for preferably controllable metered addition can be substantially calmed due to the avoidance of detachment vortices on the outlet-side region of the means for preferably controllable metered addition.
- the width of the metering blade formed as a means for preferably controllable metered addition of the fluid in fluid sub-streams in the at least one pulp suspension and the division of two arranged in adjacent columns of the turbulence generating means flow channels are preferably in a ratio of 1: 5 to 1: 1, 25th , preferably from 1: 3 to 1: 1, 5, in particular of about 1: 1, 65.
- the width of the metering blade formed as a means for preferably controllable metered addition can assume a value in the range of 20 to 50 mm.
- the metering of the Zudosierkanäle formed as a metering means for preferably controllable metered addition of the fluid in fluid streams in the at least one pulp suspension on the one hand all open at different heights or they can otherwise lead in pairs in equal or approximately equal heights and in this case an opening angle between have the opening center lines in the range of -30 to + 30 °, preferably from 0 to 30 °, in particular from 10 to 30 °.
- the point of impact of the metering opening center line of the individual metering opening on the turbulence generating means may be approximately centrally, preferably centrally between the slot planes of two adjacent flow channels or approximately flush, preferably aligned with the flow channel centerline of the flow channel of the turbulence generating means. Also, at least in regions, a height-wise offset of the metering opening center lines of the metering openings to the flow channel center lines of the flow channels of the turbulence generating means is possible. With regard to a compact construction of the headbox, it is also advantageous if the Verteillochlochplatte and the intermediate channel have a total length of a maximum of 500 mm, preferably of at most 350 mm, in particular of at most 300 mm.
- the feed device and the channels of the distribution well plate are preferably dimensioned such that the flow rate of the at least one pulp suspension in the feed device and the average flow rate of the at least one pulp suspension in the channels of the distribution well plate in a ratio of 1: 2 to 1: 3 lie.
- the respective channel of the distribution well plate - seen in the flow direction - have a constant, a continuously diverging or at least once at a time widening channel cross-section.
- the single channel of the distribution well plate preferably has a circular channel cross section with a channel diameter and the average channel diameter of the single channel of the distribution well plate and the length of the distribution well plate are ideally in a ratio of 1: 2 to 1:10, preferably 1: 3 to 1: 8, in particular from 1: 4 to 1: 5. These value ranges allow improved stability of the headbox in an optionally larger operating window.
- the fluid preferably consists of water, in particular clear water, or of a pulp suspension, in particular white water, the concentration of which differs from the average concentration of the at least one pulp suspension in the headbox.
- the headbox according to the invention is outstandingly suitable for use in a machine for producing a fibrous web, in particular paper or board web.
- the fibrous web produced in the machine with at least one headbox according to the invention has consistently outstanding properties, since, inter alia, the control of both its fiber orientation transverse profile and its basis weight cross-section is possible.
- Figure 1 is a vertical and schematic longitudinal sectional view of a
- FIG. 2 is a fragmentary and exemplary schematic detail of the headbox shown in Figure 1;
- FIG. 3 is a schematic detail view of the means, which is shown schematically in FIG. 2, for preferably regulatable / controllable means
- FIG. 4 is a view of the means, shown schematically in FIG. 3, for preferably metered / controllable metering of the fluid in partial fluid streams;
- Figure 5 is a schematic detail of another embodiment of the means for preferably controllable metered addition of the fluid in partial fluid streams;
- FIG. 6 shows a view of the means, shown schematically in FIG. 5, for preferably metered / controllable metering of the fluid in partial fluid streams
- FIG. 7 shows a schematic detail of a third embodiment of the means for preferably controllable metering of the fluid in partial fluid streams
- FIG. 8 shows a view of the means, shown schematically in FIG. 8, for preferably metered / controllable metering of the fluid in partial fluid streams;
- Figure 9 is a vertical and schematic longitudinal sectional view of a
- Distribution well plate of the head box according to the invention for a machine for producing a fibrous web from at least one pulp suspension with different
- FIG. 1 shows a vertical and schematic longitudinal section of an exemplary embodiment of a headbox 1 for a machine for producing a fibrous web 3 from a pulp suspension 2.
- the illustrated headbox 1 can of course also be designed as a multi-layer waste, the at least two different pulp suspensions for the production the fibrous web 3 used.
- the fibrous web 3 may in particular be a paper, board or tissue web.
- the headbox 1 has a feed device 4 which feeds a pulp suspension 2, for example in the embodiment of a transverse distributor tube 5 or a rotary distributor (not illustrated) with a multiplicity of tubes.
- the feeder 4 is followed downstream by a Verteilrohrlochplatte 6, which has a plurality of arranged in rows Z and in columns S channels 7.
- the individual means 9 for preferably controllable metered addition in each case comprises a plurality of metering channels 11 having a respective metering channel length 11 .L and exit-side metering channel opening 11. 1, opening at different heights and connected to a common supply channel 12 (see FIG.
- a turbulence generating means 13 Downstream of the intermediate channel 8 is a turbulence generating means 13 having a plurality of flow channels 14 arranged in rows Z and columns S.
- the pulp suspension 2 in the turbulence generating means 13 is divided into pulp suspension part streams and after exiting the turbulence generation - Medium in a machine-width chamber 15 in an embodiment of a nozzle gap 17 having headbox 16 merged again to allow the formation of a machine-width fibrous web 3.
- the flow channels 14 are preferably formed in a known manner as thin-walled turbulence tubes and / or turbulence tube inserts with at least partially constant, at least partially diverging, at least partially converging and / or discontinuous cross-sectional areas.
- the expert well known and not explicitly shown separating element in particular a blade be arranged. If a plurality of separating elements, in particular lamellae, are arranged in the headbox nozzle 16, they can have different lengths and possibly also different properties, such as surface contours and the like.
- FIG. 2 now shows a fragmentary detailed representation of the head box 1 shown schematically in FIG.
- the Zudosierkanalratio 11.L of each Zudosierkanals 11 is greater 1, 5 • the outlet side Zudosierkanalö Stamm 11.1 of the same Zudosierkanals 11 and the distance A of the outlet side Zudosierkanalö réelle 1 1 .1 of the same Zudosierkanals 11 to the turbulence generating means 13, in particular to an inlet plate 13.1 of the turbulence generating means 13 is in a range of 0 to 50 mm, preferably from 0 to 30 mm, in particular from 10 to 25 mm.
- the width 9.B (arrow) of the means 9 designed as a metering blade 9.1 for preferably controllable metering of the fluid 10 (arrow) into partial fluid streams 10.T (arrow) into the pulp suspension 2 and the pitch 14.T (arrow) - -
- the width 9.B (arrow) of the means 9 designed as a metering blade 9.1 for preferably controllable metering can assume a value in the range from 20 to 50 mm.
- the means 9 for preferably controllable metered addition have a preferably the same or approximately equal pitch T (arrow) in the width direction of the headbox 1 in the range of 10 to 100 mm, preferably 25, 33, 50 or 66 mm.
- the means 9 designed as a metering blade 9.1 for preferably controllable metered addition of the fluid 10 into partial fluid streams 10T (arrow) into the at least one pulp suspension 2 is arranged on the lower wall 8.1 of the intermediate channel 8.
- the means 9 for preferably controllable / metered metering could also be arranged on the upper wall 8.2 of the intermediate channel 8.
- the two walls 8.1, 8.2 of the intermediate channel 8 are arranged parallel to each other in the present case; However, they could also only partially executed parallel to each other, parallel, convergent, divergent or spherical curved and arranged.
- the means 9 for preferably controllable metered addition are arranged in a row; However, they can also be arranged in at least two rows, wherein they can also be arranged offset from each other.
- the distribution well plate 6 and the intermediate channel 8 have a total length LG of at most 500 mm, preferably of at most 350 mm, in particular of at most 300 mm.
- the feed device 4 and the channels 7 of the distribution well plate 6 are dimensioned such that the flow velocity v.4 (arrow) of the fiber - -
- FIG. 3 shows a schematic detail of the means 9, shown schematically in FIG. 2, for the preferably controllable metered addition of the fluid 10 (arrow) into partial fluid streams 10T (arrows).
- the metering channels 1 1 of the metering blade 9. which are preferably designed to be controllable / controllable, are arranged at equal or approximately equal distances a and have a circular cross-sectional area 1 .Q with a diameter 11 10 mm, preferably from 4 to 6 mm.
- the common supply channel 12 of the means 9 for preferably controllable metered addition has a circular cross-sectional area 12.Q with a diameter 12.D of 6 to 20 mm, preferably from 10 to 15 mm.
- Both the common supply channel 12 and the individual metering channel 11 have - seen in the respective longitudinal direction - a constant, a continuously converging or a sudden widening channel cross section 12.Q, 1 1. Q on.
- the means 9 for preferably controllable metered addition has a length 9.L in the range of 60 to 350 mm, preferably 100 to 250 mm, and a height 9.H in the range of 50 to 300 mm, preferably from 75 to 250 mm, the height 9.H being selected as a function of the clear height 8.H of the intermediate channel 8 (see FIG.
- a gap of> 3 mm, preferably of> 5 mm remains between the means 9, which is designed as a metering sword 9.1, for the preferably controllable metering and the adjacent wall of the intermediate channel 8 (see FIG.
- the means 9 designed as a metering blade 9.1 for preferably metered / controllable metering of the fluid 10 (arrow) into partial fluid streams 10
- FIG. 4 shows a view of the means 9 shown in FIG. 3 for preferably controllable metering of the fluid 10 into fluid sub-streams 10T (arrow).
- the front edge 19 of the means 9 designed as a metering blade 9.1 for preferably controllable metered addition of the fluid 10 into partial fluid streams 10.T (arrow) into the pulp suspension 2 has an end face 20 with a width 20. B of at least 3 mm, preferably at least 5 mm, in particular about 10 mm. Also, the front edge 19 of the means 9 for preferably adjustable / controllable metering is provided on both sides with a lateral chamfer 21.
- the chamfer 21 may have a chamfer angle in the range of 25 to 75 °, preferably 30 to 60 °, in particular 45 °.
- the means 9 tapers for preferably controllable metered addition in the flow direction R (arrow) of the pulp suspension 2 on both sides, the preferably continuous taper 23 a taper angle ß of a maximum of 20 °, preferably of at most 10 ° , in particular of not more than 7 °.
- FIG. 5 shows a schematic detailed illustration of a further embodiment of the means 9 for preferably controllable metering of the fluid 10 (arrow) into partial fluid streams 10T (arrows).
- the basic structure of this means 9 for preferably controllable / metered addition essentially corresponds to the basic structure of the means 9, shown schematically in FIG. 3, for preferably metered / controllable metering, so that reference is also made to this description of the figures.
- the Zudosierö Stamm 11.1 of Zudosierkanäle 1 1 of 9.1 designed as a metering device 9 for preferably regulated / controllable metering of the fluid 10 (arrow) in partial fluid streams 10.T (arrows) in the pulp suspension 2 open in pairs in the same or approximately equal heights and they have an opening angle ⁇ between the opening center lines 11 .M in the range of - 30 to + 30 °, preferably from 0 to 30 °, in particular from 10 to 30 °, on (see Figure 6).
- FIG. 6 shows a view of the means 9 shown in FIG. 5 for preferably controllable metering of the fluid 10 into partial fluid streams 10T (arrows).
- the front edge 19 of the means 9 designed as a metering blade 9.1 for preferably controllable metered addition of the fluid 10 into partial fluid streams 10.T (arrow) into the pulp suspension 2 has an end face 20 with a width 20. B of at least 3 mm, preferably at least 5 mm, in particular about 10 mm. Also, the front edge 19 of the means 9 for preferably adjustable / controllable metering is provided on both sides with a lateral rounding 24.
- the lateral rounding 24 can assume a value in the range from 0.1 to 0.45, preferably from 0.33, in particular from 0.25, the width 9.B of the means 9 designed as a metering blade 9.1.
- the means 9 tapers for preferably controllable metered addition in the flow direction R (arrow) of the pulp suspension on both sides, the preferably continuous taper 23 a Rejuvenation angle ß of a maximum of 20 °, preferably of at most 10 °, in particular of at most 7 °.
- FIG. 7 shows a schematic detail of a third embodiment of the means 9 for preferably metered / controllable metering of the agent
- the basic structure of this means 9 for preferably controllable / metered addition substantially corresponds to the basic structure of the means 9 shown in FIG. 3 for preferably controllable metered addition, so that reference is also made to this description of the figures.
- All of the metering channels 1 1, which are opened at different heights, of the agent 9, which is designed as a metering blade 9.1, for preferably metered / controllable metering of the fluid 10 (arrow) into partial fluid streams 10 .T. (Arrows) into the pulp suspension 2 are at equal or approximately equal distances a arranged and have a circular cross-sectional area 11 .Q with a diameter 1 1 .D from 2 to 10 mm, preferably from 4 to 6 mm, on.
- the common supply channel 12 of the means 9 for preferably controllable metered addition has a circular cross-sectional area 12.Q with a diameter 12.D of 6 to 20 mm, preferably from 10 to 15 mm.
- the means 9, which is designed as a metering blade 9.1 for preferably controllable metering in the two-sided area 25.1, 25.2 (see FIG. 8), is provided with at least one recess 26 between two outlet-side metering channel openings 11.1 of metering channels 11 adjacent in the longitudinal direction.
- FIG. 8 shows a view of the means 9, shown schematically in FIG. 7, for the preferably controllable metered addition of the fluid 10 into partial fluid flows 10T (arrows).
- the recesses 26 provided between two outlet-side metering-channel openings 11.1 of metering channels 1 1, which are adjacent in the longitudinal direction, of the means 9 designed as metering blade 9.1 for preferably metered / controllable metering.
- FIG. 9 shows a vertical and schematic longitudinal section of a distribution well plate 6 of the head box 1 according to the invention for a machine for producing a fibrous web from at least one pulp suspension with five channels 7 with different channel cross sections 7.Q.
- the distribution well plate 6 has five rows Z1 to Z5 on channels 7 and a plurality of columns S on channels 7. All channels 7 have a consistently round channel cross section 7.Q, but in different shapes and configurations. Also, all channels 7 are provided on the inlet side with a respective intake chamfer 27 known to the person skilled in the art.
- the channels 7 of the two upper rows Z4, Z5 initially have a constant channel cross section 7.Q, which ultimately experiences a continuous extension 28, in particular a cone 28.1 with a cone angle ⁇ of ⁇ 30 °.
- the channels 7 of the middle row Z3 initially again have a constant channel cross section 7.Q, which ultimately experiences two jump-like extensions 29, in particular increments 29.1, 29.2.
- the channels 7 of the two lower rows Z1, Z2 initially again have a constant channel cross section 7.Q, which ultimately experiences only a sudden extension 29, in particular a step jump 29.1.
- Each individual channel 7 of the distribution well plate 6 thus has at least initially a round channel cross section 7.Q with a channel diameter 7.D and then ultimately forms at least one diffuser 30 due to at least one Extension 28, 29 off.
- the mean channel diameter 7.DM of the channel 7 of the distribution well plate 6 and the length 6.L of the distribution well plate 6 are in a ratio of 1: 2 to 1:10, preferably from 1: 3 to 1: 8, in particular from 1: 4 to 1: 5.
- the means 9, designed as a metering blade 9.1 for preferably controllable metering consists at least of a metal, such as a stainless steel, titanium or bronze, or a plastic, such as a thermosetting plastic, of a thermoplastic, made of a (hard) rubber, a GRP, CFK or similar.
- a metal such as a stainless steel, titanium or bronze
- a plastic such as a thermosetting plastic, of a thermoplastic, made of a (hard) rubber, a GRP, CFK or similar.
- a plastic version in particular the materials polyamide (PA), polyphenylsulfone (PPSU), Teflon (PTFE), PoIy- oxymethylene (POM) are advantageous.
- the fluid 10 flowing through the respective headbox 1 of FIGS. 1 to 4 consists at least of water, in particular white water or clear water, or of at least one fibrous suspension whose concentration differs from the average concentration of the at least one fibrous suspension 2 flowing in the headbox 1.
- the headbox 1 shown and described in each case in the figures is particularly suitable for use in a machine for producing a fibrous web 3, in particular paper or board web, from at least one fibrous stock suspension 2.
- a headbox of the type mentioned above is improved by the invention so that a most extensive, preferably complete avoidance of the disadvantages of the prior art and a significantly improved fulfillment of the particular technological requirements achieved.
- the headbox according to the invention has a technically simple and reliable Zudosiersystem, which is also still inexpensive and technically easy to perform.
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008054898A DE102008054898A1 (de) | 2008-12-18 | 2008-12-18 | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
PCT/EP2009/063837 WO2010069649A1 (de) | 2008-12-18 | 2009-10-22 | Stoffauflauf für eine maschine zur herstellung einer faserstoffbahn |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2379799A1 true EP2379799A1 (de) | 2011-10-26 |
EP2379799B1 EP2379799B1 (de) | 2012-12-12 |
Family
ID=41478891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09740124A Not-in-force EP2379799B1 (de) | 2008-12-18 | 2009-10-22 | Stoffauflauf für eine maschine zur herstellung einer faserstoffbahn |
Country Status (5)
Country | Link |
---|---|
US (1) | US8221590B2 (de) |
EP (1) | EP2379799B1 (de) |
CN (1) | CN102216521B (de) |
DE (1) | DE102008054898A1 (de) |
WO (1) | WO2010069649A1 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008054896A1 (de) | 2008-12-18 | 2010-07-01 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102008054898A1 (de) | 2008-12-18 | 2010-06-24 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102008054897A1 (de) | 2008-12-18 | 2010-07-01 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102009027013A1 (de) | 2009-06-18 | 2010-12-23 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102010001555A1 (de) | 2010-02-03 | 2011-08-04 | Voith Patent GmbH, 89522 | Ventil zum Regulieren eines Fluidstroms |
DE102010001557A1 (de) | 2010-02-03 | 2011-08-04 | Voith Patent GmbH, 89522 | Ventil zum Regulieren eines Fluidstroms |
DE102010001541A1 (de) * | 2010-02-03 | 2011-08-04 | Voith Patent GmbH, 89522 | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102010028404A1 (de) | 2010-04-30 | 2011-11-03 | Voith Patent Gmbh | Ventil zum Regulieren eines Fluidstroms |
DE102010028408A1 (de) | 2010-04-30 | 2011-11-03 | Voith Patent Gmbh | Ventil zum Regulieren eines Fluidstroms |
DE102010028403A1 (de) | 2010-04-30 | 2011-11-03 | Voith Patent Gmbh | Ventil zum Regulieren eines Fluidstroms |
DE102010030352A1 (de) | 2010-06-22 | 2011-12-22 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102010038891A1 (de) | 2010-08-04 | 2012-02-09 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102011003849A1 (de) | 2011-02-09 | 2012-08-09 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102011003850A1 (de) | 2011-02-09 | 2012-08-09 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102011079715A1 (de) | 2011-07-25 | 2013-01-31 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
DE102011083085A1 (de) | 2011-09-21 | 2013-03-21 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
WO2016062556A1 (de) | 2014-10-22 | 2016-04-28 | Voith Patent Gmbh | Dosiereinrichtung für einen stoffauflauf |
CN105839444B (zh) * | 2016-04-12 | 2018-03-06 | 陕西科技大学 | 一种免回流可调锥形布浆器 |
CN108589384B (zh) * | 2018-04-09 | 2020-03-27 | 华南理工大学 | 一种用于长纤维造纸的新型低速水力式流浆箱 |
DE102019126296A1 (de) * | 2019-09-30 | 2021-04-01 | Voith Patent Gmbh | Lamelle für einen Stoffauflauf und Verfahren zur Herstellung einer Lamelle |
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DE4213707A1 (de) * | 1992-04-25 | 1993-10-28 | Escher Wyss Gmbh | Stoffauflaufeinrichtung für eine Papiermaschine |
DE4320243C2 (de) | 1993-06-18 | 1996-02-22 | Voith Sulzer Papiermasch Gmbh | Stoffauflauf für eine Papiermaschine |
DE4416898C2 (de) | 1994-05-13 | 1996-03-28 | Voith Sulzer Papiermasch Gmbh | Stoffauflauf für eine Papiermaschine mit lokaler Zumischung von Fluid |
DE4416899C2 (de) | 1994-05-13 | 1997-12-18 | Voith Sulzer Papiermasch Gmbh | Verfahren zur lokalen Zumischung von Fluid in einen Stoffauflauf sowie Vorrichtung zu seiner Ausführung |
DE4416909C2 (de) | 1994-05-13 | 1997-12-11 | Voith Sulzer Papiermasch Gmbh | Stoffauflauf für eine Papiermaschine |
EP0683266B1 (de) * | 1994-05-13 | 1997-09-17 | Voith Sulzer Papiermaschinen GmbH | Stoffauflauf für eine Papiermaschine mit lokaler Zumischung von Fluid |
DE4437180C2 (de) * | 1994-10-18 | 1997-03-20 | Voith Sulzer Papiermasch Gmbh | Verfahren zur Herstellung eines Stoffauflaufes und Zwischenteil eines Stoffaufllaufes einer Papier- oder Kartonmaschine |
EP0824157B1 (de) | 1996-08-14 | 2001-12-05 | Voith Paper Patent GmbH | Stoffauflauf und Verfahren zur Verteilung einer Faserstoffsuspension im Stoffauflauf einer Papiermaschine |
FI115645B (fi) * | 1997-01-14 | 2005-06-15 | Metso Paper Inc | Paperikoneen perälaatikko, jossa on reunasyöttöjärjestelyt |
DE19926805A1 (de) | 1999-06-12 | 2000-12-14 | Voith Sulzer Papiertech Patent | Stoffauflauf mit Fluidzudosierung |
DE10245154A1 (de) * | 2002-09-27 | 2004-04-15 | Voith Paper Patent Gmbh | Stoffauflauf |
DE102004000069A1 (de) * | 2004-12-30 | 2006-07-13 | Voith Paper Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn, insbesondere einer Papier- oder Kartonbahn |
DE102005000172A1 (de) * | 2005-11-30 | 2007-06-14 | Voith Patent Gmbh | Stoffauflauf einer Maschine zur Herstellung einer Faserstoffbahn |
DE102006006915A1 (de) * | 2006-02-15 | 2007-08-16 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
CN101012629B (zh) * | 2006-05-31 | 2011-04-27 | 华南理工大学 | 流浆箱的稀释水添加装置 |
DE102008043145A1 (de) | 2008-10-24 | 2010-04-29 | Voith Patent Gmbh | Zweischichtenstoffauflauf für eine Maschine zur Herstellung einer zweischichtigen Faserstoffbahn |
EP2199459A1 (de) | 2008-12-16 | 2010-06-23 | Voith Patent GmbH | Blattbildungssystem für eine Maschine zur Herstellung einer mehrschichtigen Faserstoffbahn |
DE102008054898A1 (de) | 2008-12-18 | 2010-06-24 | Voith Patent Gmbh | Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn |
-
2008
- 2008-12-18 DE DE102008054898A patent/DE102008054898A1/de not_active Withdrawn
-
2009
- 2009-10-22 WO PCT/EP2009/063837 patent/WO2010069649A1/de active Application Filing
- 2009-10-22 CN CN200980145300.6A patent/CN102216521B/zh not_active Expired - Fee Related
- 2009-10-22 EP EP09740124A patent/EP2379799B1/de not_active Not-in-force
-
2011
- 2011-06-01 US US13/151,036 patent/US8221590B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
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See references of WO2010069649A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20110290441A1 (en) | 2011-12-01 |
CN102216521B (zh) | 2014-05-14 |
US8221590B2 (en) | 2012-07-17 |
WO2010069649A1 (de) | 2010-06-24 |
DE102008054898A1 (de) | 2010-06-24 |
EP2379799B1 (de) | 2012-12-12 |
CN102216521A (zh) | 2011-10-12 |
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