CN102822416A - Headbox for a machine for producing a fibrous material web - Google Patents
Headbox for a machine for producing a fibrous material web Download PDFInfo
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- CN102822416A CN102822416A CN2010800660406A CN201080066040A CN102822416A CN 102822416 A CN102822416 A CN 102822416A CN 2010800660406 A CN2010800660406 A CN 2010800660406A CN 201080066040 A CN201080066040 A CN 201080066040A CN 102822416 A CN102822416 A CN 102822416A
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- pipe orifice
- distributing pipe
- orifice plate
- fluid
- head box
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- 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
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Abstract
The invention relates to a headbox (1) for a machine for producing a fibrous material web (3) from a fibrous material suspension (2), comprising a feed device (4, 5) which supplies the fibrous material suspension (2), a perforated distribution pipe plate (6) connected downstream, an intermediate conduit (8) located downstream thereof and having a plurality of means (9, 9.1) spaced apart from one another in the width direction of the headbox (1) for metering a fluid (10) in partial fluid streams (10. T) into the fibrous material suspension (2), wherein the intermediate conduit (8) includes two compensation regions (C.1, C.2) in which a compensating flow is possible transversely to the flow direction (R) and over the width (B) of the intermediate conduit (8), a sectional region (D) in which the means (9, 9.1) for metering fluid (10) are disposed in order also to section the flow transversely over the width (B) of the intermediate conduit (8), a turbulence generating means (11) disposed downstream, and a headbox nozzle (14) immediately adjoining the turbulence generating means (11). The headbox (1) according to the invention is characterised in that the overall compensation length (C. L) formed from the two compensation regions (C.1, C.2) and measured in the flow direction (R) has a value in the range of 30 to 1500 mm, preferably from 100 to 500 mm, in particular from 150 to 300 mm.
Description
Technical field
The present invention relates to a kind of head box that is used for making the machine of web of fiber, particularly paper web, board web by at least a fiber suspension; This head box has the supply arrangement of supplying with at least a fiber suspension; Be connected downstream and have a plurality of distributing pipe orifice plates of embarking on journey and becoming the passage of row layout; Be positioned at the center-aisle of the width of these distributing pipe orifice plate downstream and extend past head box; Said center-aisle has spaced scalable preferably/controllably the fluid quantitative dispensing the is become multiple arrangement of the some fluid sections streams in this at least a fiber suspension that is used on the width of head box; Wherein center-aisle comprises at least two compensatory zones with whole compensating length of on flow direction, measuring; In said compensatory zone, realized flowing transverse to flow direction and through the compensation of the width of center-aisle; Has at least one cut zone of cutting apart length of on flow direction, measuring with at least one; In said cut zone, arranged and be used for the device of scalable preferably/controllably the fluid quantitative dispensing; So that cross-current being crossed the stream of the width of center-aisle also cuts apart; And wherein each said device comprises a plurality of have separately rationing access portal and rationing passage length, upper shed and the rationing passages that are connected with a public feed path at various height respectively, have be arranged in downstream, have a plurality of turbulent flow generating apparatus that are arranged as the flow channel of ranks, and directly be connected and have the headbox nozzle in nozzle slit with the turbulent flow generating apparatus.
Background technology
The head box of this type is for example known from document DE 44 16 909 A1.
This document DE 44 16 909 A1 disclose the head box that is used for paper machine; Have the feedway that is used for fiber suspension; Be connected the guiding device that provides a plurality of passages in downstream; Be positioned at the mixing chamber of width of the extend past head box in guiding device downstream; Said mixing chamber have the partition wall of a plurality of flow directions of extend past basically in cross direction profiles on the head box and on head box cross direction profiles have a feedway that is used for fluid to be mixed that mixes opening, the other guiding device with a plurality of passages in downstream and the formation that is attached thereto be used for the nozzle space of the outlet gap of fiber suspension.The feedway that is used for fluid to be mixed extends in mixing chamber; And the cut zone through partition wall forms starts from mixing in mixing chamber in the zone of opening, and said from here cut zone is extended on flow direction to until second feedway basically.
Can be more or less or only partly satisfy the special specification requirement that well-mixed quality for fiber suspension and fluid, low effect width and low mapping depart from (Mappingversatz) in the system that the head box shown in this document forms.The mixing quality of fiber suspension and fluid is usually through the presort cloth of good of medium on short transverse, and the mixing distance through high turbulence intensity in the medium and the length through medium is influenced by forward ground.Has favourable influence in the high dynamic of rationing position and the high pressure loss after the rationing position for volume flow is constant.For the low effect width of hope importantly: orientation and tranquil flowing in the place ahead, rationing position; Low lateral flow in the rationing position; Only short center-aisle after the rationing position, preferably there is not a center-aisle; The rationing of the separated in synchronization of rationing position and turbulent flow generating apparatus and the autotelic and position stability in the turbulent flow generating apparatus.For the requirement that mapping departs from, have basically with for the effect width require identical criterion, but also have the criterion of the low horizontal compensation in good volume stability and the headbox nozzle in addition.
In addition, not waiting under the situation of rationing on the cross-machine direction, in center-aisle, caused the tangible lateral flow of performance more or less.Mainly open in the part when this lateral flow is observed on cross-machine direction and occur, therefore before the device that is used for scalable preferably/controllably the fluid quantitative dispensing the is become some fluid sections streams at least a fiber suspension, occur at first of center-aisle.If first to open part too short now or too high from the inflow velocity that distributes tube sheet for this of the cross section in the center-aisle, then be used for having produced lateral flow speed and/or retention effect between the device that preferred tunable save/controllably becomes the fluid quantitative dispensing the some fluid sections at least a fiber suspension to flow.Therefore, in center-aisle, on cross-machine direction, formed local excess pressure.This overvoltage causes the amount of passing through in the turbulent flow maker that is connected to change.Therefore, in headbox nozzle, produced lateral flow again, said lateral flow finally causes the mistake on the fiber alignment in the web of fiber of being produced.
Summary of the invention
Therefore, the technical problem that the present invention solved is to improve aforementioned head box, has preferably fully avoided the said shortcoming of prior art on the feasible big as far as possible degree, and has improved satisfying for special specification requirement significantly.In addition, should provide technical simple and reliable rationing system, said rationing system also at an easy rate and technically can construct simply.
This task solves through following mode according to the present invention in the head box of aforementioned type; Make that promptly the scope of value of and whole compensating length that on flow direction measure that form by at least two compensatory zones is 30mm to 1500mm; Being preferably 100mm to 500mm, is 150mm to 300mm especially.
Be able in this way solve fully according to task of the present invention.
Make according to the structure of the head box of aforementioned type of the present invention and preferably fully to have avoided the shortcoming of prior art on the big as far as possible degree, and improved satisfying significantly for special specification requirement.In addition, head box according to the present invention possesses skills and goes up simple and reliable rationing system, and said rationing system in addition can be at an easy rate and technical structure simply.
Therefore, for well squinting until the low effect width of good mixing quality, hope and required low mapping of desired fiber suspension and fluid, given and whole compensating length that on flow direction, measure has good influence especially.
In according to the headbox nozzle of head box of the present invention, also can arrange the cutting element that at least one professional has known, particularly thin slice.If in according to the headbox nozzle of head box of the present invention, arrange the particularly a plurality of thin slices of a plurality of cutting elements, then said cutting element can have different length and as need different character, like surface profile etc.
Be configured to rationing plate (Dosierschwert), be used for scalable preferably/controllably become the device of the some fluid sections streams at least a fiber suspension preferably to have the leading edge that the flow direction with at least a fiber suspension points on the contrary the fluid quantitative dispensing; Said leading edge becomes 60 ° to 90 ° with the flow direction of at least a fiber suspension; Be preferably 75 ° to 85 °, particularly move towards with 80 ° angle.And at the distributing pipe orifice plate be used for the preferably value confirmed of mathematics of compensated part length that scalable preferably/controllably the fluid quantitative dispensing is become forms between the device of the some fluid sections streams at least a fiber suspension.
The scope of the value of the compensated part length that between the device that is used for scalable preferably/controllably the fluid quantitative dispensing the is become some fluid sections streams at least a fiber suspension of distributing pipe orifice plate and turbulent flow generating apparatus, forms also is preferably 5mm to 150mm; Be preferably 10mm to 50mm, particularly 15mm.Therefore, can before the rationing position, realize orientation and tranquil the flowing of hope especially.
The scalable preferably/controllably of being used for that forms the rationing plate becomes the fluid quantitative dispensing ratio of length of directed length on the flow direction of at least a fiber suspension and center-aisle of the device of the some fluid sections streams at least a fiber suspension to be preferably 1:1.25 to 1:5, is preferably 1:1.5 to 1:3.Low effect width in particular for hope has influence to this value scope owing to the orientation before the rationing position and tranquil mobile and low lateral flow.
What form the rationing plate especially is used for scalable preferably/controllably become the device of the some fluid sections streams at least a fiber suspension preferably to be arranged in the lower wall and/or the upper wall of center-aisle the fluid quantitative dispensing.This structure is useful in the turbulent flow generating apparatus of high line number especially, to be limited in the fluid speed of incoming flow in the independent fluid incoming flow.At this, two walls of center-aisle are parallel to each other at least partly, assemble, dispersion, step-like or spherically construct agley and arrange.The device that is used for preferably scalable/controllable rationing also can be arranged at least in the delegation.Be arranged in the multirow if be used for the device of preferably scalable/controllable rationing, then they can arrange in addition each other with staggering.
In addition, the device that is used for preferably scalable/controllable rationing that forms the rationing plate is especially for example processed by stainless steel, titanium or bronze at least by metal; Or by plastics, for example by thermosetting plastic, thermoplastic, by (hard) rubber; By GFK, process by CFK etc.In constructed in plastic material, advantageously polyamide (PA), PPSU (PPSU), Teflon (PTFE), polyformaldehyde (POM) especially.
The length of distributing pipe orifice plate is preferably more than or equal to
Wherein divided area is that the gross area in the downstream of distributing pipe orifice plate is embarked on journey with the layout of distributing pipe orifice plate and become the ratio of sum of the passage of row.The structure and the operation of compact head box have been allowed according to this structure of the head box of aforementioned type of the present invention; This known head box with respect to prior art has the pressure loss that in the zone of distributing pipe orifice plate, obviously reduces, even make the distributing pipe orifice plate in the range of operation of expansion, also have sufficient operation stability on process technology.In addition, the inflow velocity of the web of fiber in the center-aisle of head box reduces through the mode of at least one diffuser with hope.In addition,, must make divided area little, so that in flow cross section, under the situation of short length, also have the deflecting effect and the hydraulic functions of diffuser for can under the situation of low pressure loss, constructing the distributing pipe orifice plate that has low length.But the length of distributing pipe orifice plate makes and can avoid the undesirable cross stream component with respect to the machine run direction in the fiber suspension that flows out from the distributing pipe orifice plate fully still unceasingly as enough " length of lead ".
In a preferred embodiment, the scope≤4000mm of the value of the divided area of distributing pipe orifice plate
2, preferably≤2500mm
2, be 200mm especially
2To 1000mm
2This value scope helps the structure of the compactness of head box basically.
The independent passage of distributing pipe orifice plate preferably has the channel cross-section of the circle that has channel diameter; And the ratio of the average channel diameter of the independent passage of distributing pipe orifice plate and the length of distributing pipe orifice plate is desirably 1:2 to 1:10; Be preferably 1:3 to 1:8, in particular for 1:4 to 1:5.This value scope has realized the improved operation stability of head box in possible bigger operation window.
The broadening part that the diffuser that in the independent passage of distributing pipe orifice plate, forms preferably has at least one step, particularly step-like convexity, and/or the tapered portion of broadening part, particularly cone angle≤30 that continue at least partly °.The diffuser that in the independent passage of distributing pipe orifice plate, forms also preferably has at least two aforesaid broadening parts.This structure helps the littler inflow velocity hope of fiber suspension in the center-aisle of head box or required and favourable pressure recovery (Druckr ü ckgewinn) basically.
At least a fiber suspension that is fed into feedway also preferably only is fed into the passage of the distributing pipe orifice plate of downstream connection.Therefore, head box can not have fiber suspension to be realized circularly, and the amount of fiber suspension goes up with more unconspicuous degree change basically on the edge of.
Aspect flow imaging, the passage of supply arrangement and distributing pipe orifice plate preferably is sized to and makes that flowing velocity and the ratio of at least a fiber suspension average flow velocity the passage of distributing pipe orifice plate in of at least a fiber suspension in supply arrangement is 1:2 to 1:4.
Fluid preferably includes water, the different screen cloth water of mean concentration of at least a fiber suspension in clean water particularly, or comprise fiber suspension, particularly its concentration and the head box.This fluid type has stood check best in similarly using.
Head box according to the present invention is suitable for use in superior mode and is used to make web of fiber particularly in the machine of paper web or board web.The web of fiber of in having at least one machine according to head box of the present invention, making has superior characteristic all the time, because realized the adjusting of the horizontal form of its fiber alignment and the adjusting of the horizontal form of area weight etc.
Description of drawings
Additional features of the present invention and advantage are visible with reference to accompanying drawing from the description of following a plurality of preferred embodiments.
Each figure is:
Fig. 1 shows the vertical longitudinal section diagram of form of implementation of head box that is used for being made by at least a fiber suspension the machine of web of fiber according to of the present invention;
Fig. 2 shows the illustrated partial view of head box that is used for being made by at least a fiber suspension the machine of web of fiber in Fig. 1;
Fig. 3 shows the details that the sections diagram of the head box 1 of indicative icon among Fig. 1; With
Fig. 4 shows the vertical longitudinal section diagram of the distributing pipe orifice plate that has different channel cross-sections of head box that is used for being made by at least a fiber suspension the machine of web of fiber according to of the present invention.
The specific embodiment
Fig. 1 shows the vertical longitudinal section diagram of example form of implementation of head box 1 that is used for being made by fiber suspension 2 machine of web of fibers 3.Illustrated head box 1 also can form the multilayer head box that at least two of uses are used to make the different fiber suspension of web of fiber 3 certainly.Web of fiber 3 is in this particularly paper web, board web or webs.
Head box 1 has the supply arrangement 4 of supplying with fiber suspension 2, for example has the supply arrangement 4 of the structure of illustrated transverse distribution pipe 5 or the not shown rounded dispensers that has a plurality of pipelines.
Connected distributing pipe orifice plate 6 in the downstream of supply arrangement 4, said distributing pipe orifice plate 6 has embark on journey Z and become passage 7 (see figure 2)s of row S of a plurality of layouts.At least a fiber suspension of supplying with 2 of supply arrangement 4,5 can only supply to the passage 7 of the distributing pipe orifice plate 6 that is connected downstream.
The width B (arrow) that has connected again at head box 1 in the downstream of distributing pipe orifice plate 6 goes up the center-aisle 8 that extends; Said center-aisle 8 provide a plurality of on the width of head box 1 spaced device 9, with scalable preferably/controllably fluid 10 (arrow) rationing is become the some fluid sections stream 10.T (arrow) at least a fiber suspension 2.
The independent device 9 that is used for preferably scalable/controllable rationing comprises a plurality of rationing passage 18 (see figure 3)s that have each rationing access portal 18.1 and be connected at the feed path 19 differing heights upper shed and that provide respectively.
In addition; Center-aisle 8 comprises two compensatory zones that have a whole compensating length C.L that go up to measure at flow direction R (arrow) C.1, C.2; Wherein can realize flowing transverse to flow direction R (arrow) and through the compensation of the width B (arrow) of center-aisle 8; Go up the cut zone D of cutting apart length D.L that measures with having at flow direction R (arrow); In said cut zone D, arranged to be used for scalable preferably/controllably fluid 10 (arrow) rationing the is become device 9 of the some fluid sections stream 10.T at least a fiber suspension 2, also cut apart with the stream of the width B (arrow) of cross-current being crossed center-aisle 8.
Also can in headbox nozzle 14, arrange at least one professional perhaps known and the not cutting element of detailed icon, particularly thin slice.If should in headbox nozzle 14, arrange the more particularly cutting element of thin skin, then said cutting element can have different length and as need also take on a different character, like surface profile etc.
Suggestion now, make by at least two compensatory zones C.1, the scope of the value of that C.2 forms and whole compensating length C.L go up measurement at flow direction R (arrow) is 30mm to 1500mm, is preferably 100mm to 500mm, is 150mm to 300mm especially.
Be configured to rationing plate 9.1, be used for scalable preferably/controllably with fluid 10 (arrow) rationing become the device 9 of the some fluid sections stream 10.T (arrow) at least a fiber suspension 2 also have with at least a fiber suspension 2 in the leading edge 23 pointed on the contrary of flow direction R (arrow); Said leading edge 23 becomes 60 ° to 90 ° with the flow direction R (arrow) of at least a fiber suspension 2; Preferably become 75 ° to 85 °, particularly with about 80 ° angle [alpha] trend.
Distributing pipe orifice plate 6 and to be used for scalable preferably/controllably fluid 10 (arrow) rationing is become the compensated part length C .1.L that forms between the device 9 of the some fluid sections stream 10.T (arrow) at least a fiber suspension 2 be mean value.
In addition; Being used for scalable preferably/controllably, fluid 10 (arrow) rationing is become the scope of the value of the compensated part length C .2.L that forms between some fluid sections stream 10.T (arrow) (see figure 3)s and the turbulent flow generating apparatus 11 at least a fiber suspension 2 is 5mm to 150mm; Preferably 10mm to 50mm is 15mm especially.
Embark on journey Z and become the passage 7 of row S to have the known diffuser of at least one professional at least partly of the layout of distributing pipe orifice plate 6.
And the length 6.L of distributing pipe orifice plate 6 is more than or equal to
Wherein divided area TF is embark on journey Z and become the ratio of sum of the passage 7 of row S of gross area 6.F and the layout of distributing pipe orifice plate 6 in the downstream of distributing pipe orifice plate 6.The gross area 6.F in the downstream of distributing pipe orifice plate 6 multiply by the downstream height 6.H (see figure 2) of distributing pipe orifice plate 6 at this for downstream width 6.B (double-head arrow) of distributing pipe orifice plate 6.
The passage 7 of supply arrangement 4 and distributing pipe orifice plate 6 is sized to and makes that v.4 the flowing velocity of at least a fiber suspension 2 in supply arrangement 4 be 1:2 to 1:4 with the average flow velocity ratio v.7 of fiber suspension 2 in the passage 7 of distributing pipe orifice plate 6.
Fig. 2 show among Fig. 1 illustrated be used for by at least a fiber suspension make web of fiber machine head box according to the partial view of observing arrow A.
Distributing pipe orifice plate 6 has passage 7 that is arranged to triplex row Z1 to Z3 and the passage 7 that is arranged to more row, but wherein only illustrates the passage 7 of four row S1 to S4.
The divided area TF of distributing pipe orifice plate 6, promptly the be expert at scope of the Z1 to Z3 and the ratio of the sum of the passage 7 of row among the S of the layout of the gross area 6.F of the flow downstream of distributing pipe orifice plate 6 and distributing pipe orifice plate 6 is≤4000mm
2, preferably≤2500mm
2, be 200mm especially
2To 1000mm
2The aperture area 6.0 of distributing pipe orifice plate 6 self is >=30%; Preferably >=40%; Particularly >=50%, wherein the aperture area 6.0 of distributing pipe orifice plate 6 self be distributing pipe orifice plate 6 the gross area 7.F-that is arranged in the passage 7 in Z1 to Z3 and the row S1 to S4 only for a flow channel 7 illustrate-with the ratio of the gross area 6.F of the flow downstream of distributing pipe orifice plate 6.The gross area 6.F of the flow downstream of distributing pipe orifice plate 6 is generally equal to the main entrance area at the mobile upper reaches of the medial compartment of head box.
In addition, the independent passage 7 of distributing pipe orifice plate 6 has a channel diameter circular channel cross section 7.Q D.7 beginning to have at least.The passage 7 of illustrated distributing pipe orifice plate 6 has from the step-like broadening part 17 of the particularly square channel cross-section 7.Q of the circular channel cross section 7.Q rectangle to the end that respectively begins, particularly step-like protruding 17.1.The ratio range of the length 6.L of the average channel diameter 7.DM of the passage 7 of distributing pipe orifice plate 6 and distributing pipe orifice plate 6 (see figure 1)s is 1:2 to 1:10, preferably 1:3 to 1:8, particularly 1:4 to 1:5.
Fig. 3 shows the details that the sections diagram of schematically illustrated head box 1 in Fig. 1 now.
Be used for scalable preferably/controllably with fluid 10 (arrow) rationing become the device that forms rationing plate 9.1 9 of the some fluid sections stream 10.T (arrow) at least a fiber suspension 2 comprise respectively a plurality of have separately rationing passage length and outlet side rationing access portal 18.1, upper shed and the rationing passage 18 that is connected with a public feed path 19 at various height.At this, be used for all rationing opening 18.1 upper sheds at various height of rationing passage 18 that scalable preferably/controllably becomes fluid 10 (arrow) rationing in the device that forms rationing plate 9.1 9 of the some fluid sections stream 10.T (arrow) in the fiber suspension 2.
Being used for scalable preferably/controllably becomes the device that forms rationing plate 9.1 9 of the some fluid sections stream 10.T (arrow) in the fiber suspension 2 in the Germany Patent document DE 10 2,008 054 898.7 on December 18th, 2008 (applicant's case number: HPA14265 DE and applicant's work title " MJ II-DoS-TE-Geometrie ") description with illustrate fluid 10 (arrow) rationing.Relevant therewith disclosure forms the object of this description.
And being used for scalable preferably/controllably, fluid 10 (arrow) rationing to be become the ratio of going up the length 8.L of directed length 9.L and center-aisle 8 at the flow direction R of fiber suspension 2 (arrow) of the device that forms rationing plate 9.1 9 of the some fluid sections stream 10.T (arrow) in the fiber suspension 2 be 1:1.25 to 1:5, is preferably 1:1.5 to 1:3.
The device 9 that is used for preferably scalable/controllable rationing is in the scope at 10mm to 100mm on the width of head box 1; Preferably in the scope of 25mm, 33mm, 50mm or 66mm, have preferably equate or approximately equalised separation T (arrow).
In addition, be configured to rationing plate 9.1, be used for scalable preferably/controllably become the device 9 of the some fluid sections stream 10.T (arrow) in the fiber suspension 2 to be arranged in the lower wall 8.1 of center-aisle 8 fluid 10 (arrow) rationing.Alternatively or replenish ground, the device 9 that is used for preferably scalable/controllable rationing also can be arranged in the upper wall 8.2 of center-aisle 8.Two walls 8.1,8.2 of center-aisle 8 are arranged at present in parallel to each other; But said two walls also can be only partly in parallel to each other, converge ground, disperse ground or sphere is constructed agley and arranged.In addition, device 9 layouts that are used for preferably scalable/controllable rationing are embarked on journey, but they also can be arranged at least two row, and wherein they can arrange each other with staggering at this.
And the passage 7 of supply arrangement 4 and distributing pipe orifice plate 6 be sized to make the flowing velocity of fiber suspension 2 in supply arrangement 4 v.4 (arrow) and the flowing velocity of fiber suspension 2 in the passage 7 of distributing pipe orifice plate 6 v.7 the ratio of (arrow) be 1:2 to 1:4.
Fig. 4 shows the vertical longitudinal section diagram of the distributing pipe orifice plate 6 that has different channel cross-section 7.Q of head box 1 that is used for being made by at least a fiber suspension the machine of web of fiber according to of the present invention.
Distributing pipe orifice plate 6 has the passage 7 of five capable Z1 to Z5 and the passage 7 of multiple row S more.All passages 7 have circular all the time channel cross-section 7.Q, but have different shapes and structure.All passages 7 also all provide the professional the known chamfering 20 that respectively enters the mouth at entrance side.
The passage 7 of two up Z4, Z5 is beginning to locate to have constant channel cross-section 7.Q, and said channel cross-section 7.Q has lasting broadening part 21 at last, particularly has≤tapered portion 21.1 of 30 ° cone angle beta.
The passage 7 of middle line Z3 is beginning to locate also have constant channel cross-section 7.Q, and said channel cross-section 7.Q has two step-like broadening parts 17 at last, and particularly step-like protruding 17.1,17.2.
The passage 7 of two descending Z1, Z2 is beginning to locate to have constant channel cross-section 7.Q once more, and said channel cross-section 7.Q only has a step-like broadening part 17 at last, and particularly step-like protruding 17.1.
Therefore each independent passage 7 of distributing pipe orifice plate 6 is beginning to locate to have circular at least channel cross-section 7.Q, and forms at least one diffuser 22 at last owing at least one broadening part 17,21 then.The ratio of the average channel diameter 7.DM of the passage 7 of distributing pipe orifice plate 6 and the length 6.L of distributing pipe orifice plate 6 is 1:2 to 1:10, preferably 1:3 to 1:8, particularly 1:4 to 1:5.
For the professional, the characteristic of the form of implementation of the head box of in Fig. 1 to Fig. 4, describing 1 also can make up in a similar fashion at least in part each other.
Each head box 1 in Fig. 1 to Fig. 4 is suitable for known being used for of user professional and is made in the machine of web of fiber 3, particularly paper web or board web by at least a fiber suspension 2 on specific degree.
And the fluid 10 (arrow 1) that flows through each head box 1 among Fig. 1 to Fig. 4 comprises water at least; Comprise screen cloth water or clean water especially, or comprise the different at least a fiber suspension of concentration of its concentration and at least a fiber suspension 2 that in head box 1, flows.
In a word, be understood that the head box that has improved aforementioned type through the present invention, the feasible glitch-free operation that has realized head box, and the pressure loss at least a fiber suspension is low.In addition, also realizing sufficient operation stability on the process technology on the range of operation of expansion under the structure of still compact head box.
Reference list
1 head box
2 fiber suspensions
3 web of fibers
4 supply arrangements
5 transverse distribution pipes
6 distributing pipe orifice plates
6.B downstream width (double-head arrow)
6.F the downstream gross area
6.H downstream height
6.O aperture area
7 passages
7.D channel diameter
7.DM average channel diameter
7.Q channel cross-section
8 center-aisles
8.1 lower wall
8,2 upper walls
8.L length
9 are used for preferably the device of rationing fluid of scalable/controllably
9.1 be used for preferably the rationing plate of rationing fluid of scalable/controllably
9.L length
10 fluids (arrow)
10.T fluid section stream (arrow)
11 turbulent flow generating apparatus
12 flow channels
Machine-wide chambers 13
14 headbox nozzle
15 nozzle slits
16 baffle plates
17 broadening parts
17.1 the broadening part, step-like convexity
17.2 the broadening part, step-like convexity
18 rationing passages
18.1 rationing access portal
19 feed paths
20 inlet chamferings
21 broadening parts
21.1 the broadening part, tapered portion
22 diffusers
23 leading edges
A observes arrow
B width (arrow)
C.1 first compensatory zone
C.1.L compensated part length (first compensatory zone)
C.2 second compensatory zone
C.2.L compensated part length (second compensatory zone)
The total compensating length of C.L
The D cut zone
D.L is cut apart length
R flow direction (arrow)
The S row
S1 to S4 is listed as
T separates (arrow)
The TF divided area
V.4 flowing velocity (supply arrangement)
V.7 average flow velocity (distributing pipe orifice plate)
Z is capable
Z1 to Z3 is capable
Z1 to Z5 is capable
The α angle
The β cone angle
Claims (14)
- A method for suspension from at least one fiber (2) manufacturing a fiber web (3), in particular a paper web, paperboard web machine headbox (1), said headbox (1) with There supplying fiber suspension (2) at least one supply device (4, 5) connected downstream and having a plurality of rows are arranged (Z, Z1 to Z3; Z1 to Z5) and a column (S; S1 to S4) The channel (7) of the dispensing tube plate (6), located downstream of the orifice of the dispensing tube extending through the headbox (1) of the width (B) of the intermediate channel (8), and said intermediate channel (8) with a headbox (1) in the width direction spaced from each other for a preferably controllable / adjustable manner the fluid (10) to the at least one ration fiber suspension (2) the number of fluid partial flow (10T) of the plurality of devices (9,9.1), wherein the intermediate channel (8) comprises a flow direction in the (R) on the measured total compensation length (CL) of the at least two compensation region (C1, C2) in the compensation area to be transverse to the flow direction of the (R) and through an intermediate channel (8) has a width (B) of the compensated flow, and with the flow direction (R) measured on the cut length (DL), at least a divided region (D), in each divided region may preferably be arranged for the control / adjust to the fluid (10) into at least one fiber ration suspension (2) the number of fluid partial stream (10T) means (9,9.1) in the cross flow through the intermediate channel (8) has a width (B) can be divided streams, and wherein each device (9,9.1) respectively include a plurality having a respective outlet-side passage opening ration (18.1) and the channel length rationing, at different levels, and with a common upper opening of the supply passage (19) connected to the rationing channel (18) with arranged in the downstream, a plurality of arranged in rows (Z) and and columns (S) of the flow channel (12) of the turbulence generating means (11), and the turbulence generating means (11) is directly connected, and a nozzle slit (15) of the headbox nozzle (14),It is characterized in that,(C1, the scope of the value of the whole compensating length (C.L) that C2) forms and on flow direction (R), measure is 30mm to 1500mm, is preferably 100mm to 500mm, especially is 150mm to 300mm by two compensatory zones.
- 2. head box according to claim 1 (1),It is characterized in that,Be configured to rationing plate (9.1), be used for preferred tunable joint/device (9) that controllably becomes some fluid sections in this at least a fiber suspension (2) to flow (10.T) fluid (10) rationing has the leading edge (19) that the flow direction (R) with at least a fiber suspension (2) points on the contrary; Said leading edge (19) becomes 60 ° to 90 ° with the flow direction (R) of this at least a fiber suspension (2); Preferably become 75 ° to 85 °; Particularly with about 80 ° angle trend; And save/controllably fluid (10) rationing to be become the compensated part length (C.1.L) that forms between the device (9,9.1) of the some fluid sections streams (10.T) in this at least a fiber suspension (2) be mean value with being used for preferred tunable at distributing pipe orifice plate (6).
- 3. head box according to claim 1 and 2 (1),It is characterized in that,The preferred tunable joint/controllably of being used at distributing pipe orifice plate (6) becomes some fluid sections in this at least a fiber suspension (2) to flow the device (9 of (10.T) fluid (10) rationing; 9.1) and turbulent flow generating apparatus (11) between the scope of value of the compensated part length (C.2.L) that forms be 5mm to 150mm; Be preferably 10mm to 50mm, particularly 15mm.
- 4. according to a described head box (1) in the aforementioned claim,It is characterized in that,Be configured to rationing plate (9.1), be used for the preferred tunable joint/controllably become the interior some fluid sections of at least a fiber suspension (2) to flow the device (9 of (10.T) fluid (10) rationing; 9.1) the ratio that goes up the length (8.L) of directed length (9.L) and center-aisle (8) at the flow direction (R) of this at least a fiber suspension (2) be preferably 1:1.25 to 1:5, be preferably 1:1.5 to 1:3.
- 5. according to a described head box (1) in the aforementioned claim,It is characterized in that,Be configured to rationing plate (9.1), be used for the preferred tunable joint/controllably become the device (9,9.1) of the fluid section stream (10.T) in this at least a fiber suspension (2) to be arranged on the upper wall (8.1) and/or lower wall (8.2) of center-aisle (8) fluid (10) rationing.
- 6. according to a described head box (1) in the aforementioned claim,It is characterized in that,The length (6.L) of distributing pipe orifice plate (6) is more than or equal to
Wherein divided area (TF) is the layout of the gross area (6.F) and distributing pipe orifice plate in the downstream of distributing pipe orifice plate (the 6) (Z that embarks on journey; Z1 to Z3; Z1 to Z5) and become row (S; The ratio of the sum of passage S1 to S4) (7). - 7. head box according to claim 6 (1),It is characterized in that,Scope≤the 4000mm of the value of the divided area (TF) of distributing pipe orifice plate (6) 2, preferably≤2500mm 2, especially be 200mm 2To 1000mm 2
- 8. according to a described head box (1) in the aforementioned claim,It is characterized in that,The passage (7) of distributing pipe orifice plate (6) has the channel cross-section (7.Q) of the circle that has channel diameter (7.D); And the ratio of the average channel diameter (7.DM) of the passage (7) of distributing pipe orifice plate (6) and the length (6.L) of distributing pipe orifice plate (6) is 1:2 to 1:10; Be preferably 1:3 to 1:8, in particular for 1:4 to 1:5.
- 9. according to a described head box (1) in the aforementioned claim,It is characterized in that,The diffuser (20) of structure has at least one step-like broadening part (17), particularly step-like convexity (17,17.1 in the passage (7) of distributing pipe orifice plate (6); 17,17.2).
- 10. according to a described head box (1) in the aforementioned claim,It is characterized in that,The diffuser (20) of structure has lasting broadening part (9) at least partly in the passage (7) of distributing pipe orifice plate (6), particularly has the tapered portion (19.1) smaller or equal to 30 ° cone angle (α).
- 11. according to a described head box (1) in the aforementioned claim,It is characterized in that,The diffuser (20) of structure has at least two broadening parts (17.1,17.2) in the passage (7) of distributing pipe orifice plate (6).
- 12. according to a described head box (1) in the aforementioned claim,It is characterized in that,At least a fiber suspension (2) that is fed into supply arrangement (4,5) only is fed into the passage (7) of the distributing pipe orifice plate (6) of downstream connection.
- 13. according to a described head box (1) in the aforementioned claim,It is characterized in that,The passage (7) of supply arrangement (4,5) and distributing pipe orifice plate (6) is sized to and makes that flowing velocity (4.v) and the ratio of at least a fiber suspension (2) average flow velocity (7.v) the passage (7) of the passage (6) of distributing pipe orifice plate in of at least a fiber suspension (2) in supply arrangement (4,5) is 1:2 to 1:4.
- 14. a machine that is used to make web of fiber (3), particularly paper web or board web, said machine have at least one according to a described head box (1) in the claim 1 to 13.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010001541.5 | 2010-02-03 | ||
| DE201010001541 DE102010001541A1 (en) | 2010-02-03 | 2010-02-03 | Headbox for a machine for producing a fibrous web |
| PCT/EP2010/069688 WO2011095252A1 (en) | 2010-02-03 | 2010-12-15 | Headbox for a machine for producing a fibrous material web |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102822416A true CN102822416A (en) | 2012-12-12 |
Family
ID=43719484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800660406A Pending CN102822416A (en) | 2010-02-03 | 2010-12-15 | Headbox for a machine for producing a fibrous material web |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2531645A1 (en) |
| CN (1) | CN102822416A (en) |
| DE (1) | DE102010001541A1 (en) |
| WO (1) | WO2011095252A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422384A (en) * | 2013-08-08 | 2013-12-04 | 华南理工大学 | Hydraulic power experimental flow box capable of being used for flow field measurement and visualization research |
| CN108589384A (en) * | 2018-04-09 | 2018-09-28 | 华南理工大学 | A kind of novel low speed hydraulic pulp flowing box for long fibre papermaking |
| CN114182560A (en) * | 2021-12-08 | 2022-03-15 | 浙江华章科技有限公司 | Flow box flow control mechanism, control method and flow box |
| CN115298370A (en) * | 2020-03-31 | 2022-11-04 | 金伯利-克拉克环球有限公司 | Method and apparatus for producing a zoned and/or layered substrate |
| CN115867697A (en) * | 2020-05-29 | 2023-03-28 | 金伯利-克拉克环球有限公司 | Headbox for producing a base web |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010038891A1 (en) | 2010-08-04 | 2012-02-09 | Voith Patent Gmbh | Headbox for machine to manufacture e.g. packaging paper web from fibrous material suspension, has partial flow lines arranged adjacent to secondary feed device and arranged non-adjacent to intermediate channel and/or fluid metering units |
| DE102011079715A1 (en) | 2011-07-25 | 2013-01-31 | Voith Patent Gmbh | Headbox for machine for producing fibrous web e.g. paper, has distributor main structure having specified cross-sectional area ratio and width-height ratio |
| DE102011083085A1 (en) | 2011-09-21 | 2013-03-21 | Voith Patent Gmbh | Headbox for a machine for producing a fibrous web |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4416909A1 (en) * | 1994-05-13 | 1995-11-16 | Voith Sulzer Papiermasch Gmbh | Mixture of fluid with suspension at paper-making stock inlet |
| DE102007055905A1 (en) * | 2007-12-21 | 2009-06-25 | Voith Patent Gmbh | Head box for machine for producing fibrous material, particularly paper or card board, has fibrous material suspension, where dosing openings of unit are arranged in upstream distance to flow channel |
| CN102216522A (en) * | 2008-12-18 | 2011-10-12 | 福伊特专利公司 | Headbox for a machine for producing a fibrous web |
| CN102216521A (en) * | 2008-12-18 | 2011-10-12 | 福伊特专利公司 | Headbox for a machine for producing a fibrous web |
-
2010
- 2010-02-03 DE DE201010001541 patent/DE102010001541A1/en not_active Withdrawn
- 2010-12-15 CN CN2010800660406A patent/CN102822416A/en active Pending
- 2010-12-15 EP EP10794963A patent/EP2531645A1/en not_active Withdrawn
- 2010-12-15 WO PCT/EP2010/069688 patent/WO2011095252A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4416909A1 (en) * | 1994-05-13 | 1995-11-16 | Voith Sulzer Papiermasch Gmbh | Mixture of fluid with suspension at paper-making stock inlet |
| DE102007055905A1 (en) * | 2007-12-21 | 2009-06-25 | Voith Patent Gmbh | Head box for machine for producing fibrous material, particularly paper or card board, has fibrous material suspension, where dosing openings of unit are arranged in upstream distance to flow channel |
| CN102216522A (en) * | 2008-12-18 | 2011-10-12 | 福伊特专利公司 | Headbox for a machine for producing a fibrous web |
| CN102216521A (en) * | 2008-12-18 | 2011-10-12 | 福伊特专利公司 | Headbox for a machine for producing a fibrous web |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422384A (en) * | 2013-08-08 | 2013-12-04 | 华南理工大学 | Hydraulic power experimental flow box capable of being used for flow field measurement and visualization research |
| CN103422384B (en) * | 2013-08-08 | 2015-04-22 | 华南理工大学 | Hydraulic power experimental flow box capable of being used for flow field measurement and visualization research |
| CN108589384A (en) * | 2018-04-09 | 2018-09-28 | 华南理工大学 | A kind of novel low speed hydraulic pulp flowing box for long fibre papermaking |
| CN115298370A (en) * | 2020-03-31 | 2022-11-04 | 金伯利-克拉克环球有限公司 | Method and apparatus for producing a zoned and/or layered substrate |
| CN115298370B (en) * | 2020-03-31 | 2023-05-02 | 金伯利-克拉克环球有限公司 | Method and apparatus for producing zoned and/or layered substrates |
| CN115867697A (en) * | 2020-05-29 | 2023-03-28 | 金伯利-克拉克环球有限公司 | Headbox for producing a base web |
| US11963851B2 (en) | 2020-05-29 | 2024-04-23 | Kimberly-Clark Worldwide, Inc. | Headbox for manufacturing a substrate |
| CN114182560A (en) * | 2021-12-08 | 2022-03-15 | 浙江华章科技有限公司 | Flow box flow control mechanism, control method and flow box |
| CN114182560B (en) * | 2021-12-08 | 2023-07-14 | 浙江华章科技有限公司 | Flow control mechanism and control method for head box and head box |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2531645A1 (en) | 2012-12-12 |
| DE102010001541A1 (en) | 2011-08-04 |
| WO2011095252A1 (en) | 2011-08-11 |
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Application publication date: 20121212 |