CN101622399B - Structural element for a functional member of a headbox in a web-manufacturing machine, functional member and headbox made thereof, and associated methods - Google Patents
Structural element for a functional member of a headbox in a web-manufacturing machine, functional member and headbox made thereof, and associated methods Download PDFInfo
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- CN101622399B CN101622399B CN200880006666.0A CN200880006666A CN101622399B CN 101622399 B CN101622399 B CN 101622399B CN 200880006666 A CN200880006666 A CN 200880006666A CN 101622399 B CN101622399 B CN 101622399B
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Images
Classifications
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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
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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
- D21F1/022—Means for injecting material into flow within the headbox
-
- 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
- D21F1/026—Details of the turbulence section
-
- 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
- D21F1/028—Details of the nozzle section
Abstract
The present invention relates to a structural element (17A, 17B, 17C) for a functional member (11) in a headbox of a web-manufacturing machine, the structural element comprising an integral block (1) comprising therein a plurality of channels (2) defining flow channels for a paper stock, said stock flow channels extending through the integral block from a first upstream end (IA) to a second downstream end (IB) of the block. According to the invention, the structural element comprises at least one gap-forming element (13) which is arranged to ensure a gap (14) of a predetermined width between the block of the structural element and a neighbouring element.
Description
Technical field
The present invention relates to a kind of head box that is used for the structural detail of head box functional part and comprises this functional part.The method that the invention still further relates to the structural detail that is used for head box and be used to make this structural detail.
Background technology
As known in the prior art; In the web-manufacturing machine of paper machine or other type; Usually slurry or fibre suspension directly or through a plurality of separate duct are fed to head box from a slurry collector or a plurality of slurry collector, said a plurality of separate duct guide the fiber pulp materials flows and are connected with the upstream extremity of head box.Then the mode of said slurry with spraying is discharged on the forming net through weir plate antelabium opening from the weir plate chamber of head box, thereby forms paper web on the net, said weir plate antelabium opening is positioned at the downstream of head box.
Paper machine can be made single-part stationery or the board web that only comprises a kind of types of fibers cellulose fiber, and therefore such machine has single-layer headboxes.
As selection; Said machine can be made multi-ply paper or board web; Wherein said paper web is made up of the different layers with different types of fiber, and therefore, such machine promptly can be provided with a plurality of single-layer headboxes of a plurality of individual layer paper webs that transmission superposes each other; Comprise different fibrolaminar multi-layer webs with formation, said paper machine also can be equipped with the multilayer head box that provides multi-layer web to form.
Disclosed conventional headbox has the direct slurry supply manifold that is connected with the head box housing of trip end above that in PCT communique WO 99/36613 (Beloit).Slurry is guided to pipe group or the so-called turbulator from said manifold, and this pipe group or turbulator comprise a comb of embarking on journey and arranging, are used for slurry further is fed to the weir plate chamber of head box.The slurry that is fed to the weir plate chamber passes and is ejected on the forming net from slice opening from it.
Said pipe group comprises by six a row hundreds of comb that the pipe that extends along transverse machine forms.This structure is very heavy, and need to assemble many man-hours with manual welding should the pipe group.
U.S. Pat 4; 376; Disclose a kind of alternative designs that is used for the head box of multi-layer web in 014, wherein two slurry manifolds also directly are connected with the turbulator of head box, and said turbulator comprises a plurality of pipes that are used for making the tiny scale turbulent flow of slurry generation.This design also has top mentioned shortcoming.
As disclosed among patent EP 0 912 797 B1 (Mesto Paper Karlstad AB), the multilayer head box of another traditional type has many pipelines, and said pipeline is connected the slurry manifold of correspondence with the respective tube row of head box turbulator.
Another patent EP 0 939 842 B2 (Mesto Paper Karlstad AB) have been shown among Fig. 1; Wherein said slurry manifold can be connected with the first pipe group; Slurry stream continues to flow to the second pipe group or so-called turbulator from the first pipe group then; To be ejected on the forming net, this second pipe group is connected with the first pipe group and further is connected with the weir plate chamber.The many hand assembled operations of this design demand, and need the hundreds of pipe in the welding first pipe group and the second pipe group.
US 3,923, disclose the head box of another type among 593 (Beloit).This head box has many confession slurries chamber on its entrance point, and has many weir plate chamber pressure equalizing chambers before that are positioned at after the turbulator that comprises a plurality of pipes and are positioned at head box.
Therefore; Comprehensive all above-mentioned head box types; We can say that the arbitrary head box that in paper machine, is used to transmit fibre stuff all has many functional parts, these functional parts comprise pressure equalizing chamber and/or the pipe encapsulation that is linked in sequence each other along the fibre stuff flow path direction.
Traditional turbulator is made for one group of a plurality of stainless steel tube, and said a plurality of stainless steel tubes are attached at together through welding, and forms across many pipes of head box width capable tube bank or pipe group.The inner surface of pipe must be very smooth, avoiding fiber laydown or flowage friction, thereby should careful operation and should stand electrolytic treatments.Quite difficulty and harsh many man-hours of action need, therefore increased equipment price.
Usually, said pipe process by stainless steel and manual welding together, forming turbulator or pipe group, so turbulator or pipe consist of the quite massive functional part of head box.The width of traditional paper machine to up to changing more than the 8m, this means that the turbulator or the pipe group of the corresponding head box of paper machine forms required size accordingly from 60cm, and can weigh very greatly.The weight of such pipe group and size cause difficulty when making, transporting and assembling head box.
US 4,895, and 624 disclose a kind of optional structure of turbulator.This turbulator is formed by one or more plastic columns.Porose or the perforation of said post, thus runner formed.The surface of each runner or wall are processed by synthetic material or ceramic material, and this synthetic material or ceramic material form hard, smooth and closely knit surface, and this has prevented the absorbed moisture through plastic column.Part between the wall is formed by the suitable plastic material casting of polyurethane and so on.The raw material chemical bond of the surfacing of runner and post, thus the face coat of the main body of post and runner constitutes unified integral body by two kinds of synthetic materials that tightly combine and/or ceramic material.Said turbulator both can along transverse to generator longitudinally direction also can in the plane of the axis that is parallel to runner, be divided into hole column.Therefore, US 4,895, and 624 disclose two plastic columns that can be arranged side by side, to form the functional part (for example turbulator) in the head box.
Yet; With US 4,895, the problem that the plastic column that such of 624 is arranged side by side is relevant is stress (thermal stress or the dynamic stress that for example produce owing to the slurry flowing pressure that fluctuates in the pulp flow channel); This stress can make each plastic column distortion, therefore disturbs the formation of paper.
Summary of the invention
Therefore, the objective of the invention is to be used to compensate this possible distortion, and simplify head box functional part structure and keeping or improving price, weight and the installation time that reduces them when paper web forms.
Structural detail according to the present invention is characterised in that the characteristic according to the characteristic of first aspect.
Gap formation element according to structural detail of the present invention has been guaranteed between each structural detail of other functional part of forming mixed cell, unit, balance cylinder, first pipe unit, turbulator unit or said head box, to have the gap.Such gap guarantees to exist the expansion space that is used for each piece again, has avoided the distortion of said pulp flow channel thus.
The invention enables price, installation time and the weight of said functional part to significantly reduce.
And, the invention enables whole head box and price, installation time and the weight of framework and equipment of enclosing to significantly reduce, and simplified installation and the control of head box in its operating period.
The present invention is also through allowing to provide with adjacent relation assembling at least two structural details according to the present invention the more efficient methods of the functional part of making said head box.
The present invention also provides the method for assembling the more effective of said whole head box and simplifying through the encapsulation that allows a plurality of structural details to be assembled into preliminary dimension; Said encapsulation limits at least one said functional part; The wherein said structural detail gap that is spaced apart from each other; And therebetween through the potted component sealing; At at least one functional part of disposed of the slurry flow path direction of the weir plate chamber of longshore current in said head box housing, and make said functional part be connected to each other and/or be connected with said slurry box housing.
Therefore; Allow more simply and more quickly to make and assemble any one different functions parts of said head box according to structural detail according to the present invention, therefore reduced required stainless amount and made that the man-hour that is used to assemble said functional part and said whole head box is minimum.
Be merely weight half the of the conventional steel turbulator unit of same size, type and pattern by the weight of the said functional part such as said turbulator unit of structural detail according to the present invention assembling, and more easily be assembled in the said head box.
Similarly, other functional part of said head box (for example one or more equalization chamber and/or pressure equalizing chamber and the said first pipe group) also can assemble and be installed in the said head box by structural detail according to the present invention.
Should be understood that the improvement to said head box that is proposed not only is confined to said turbulator unit itself.
The head box that comprises housing, weir plate chamber and at least one functional part is arranged in the said housing upper reaches of said weir plate chamber along the slurry flow path direction, and wherein said functional part comprises that at least one is according to structural detail of the present invention.
According to the size and the type of said head box, can a plurality of structural details according to the present invention be assembled together, with the essential quantity of the required size of the functional part that said turbulator unit or other head box are provided with the passage that is used for said slurry stream.The structural detail suitable polymers material capable of using (for example polyurethane, polyurethane foam, PVDF plastics, C-PVC, polypropylene, polyethylene-HDPE,
polyacetals (PA), epoxy resin, phenolic resins, vinyl esters or analog etc.) that limits said slurry stream road is molded, push, inject or extrude and form, and perhaps can use synthetic material or other material or technology that is fit to.As selection, said passage can in the solid slug of suitable material, be holed or reaming forms.
These manufacture processes cost of reducing investment outlay is saved stainless steel, and the weight of other part of therefore said turbulator part and/or said head box will be lighter, and this will reduce the weight of whole head box again.
The molding process that is used to make according to a structural detail of the present invention spends about 15 to 20 minutes, and the welding of corresponding conventional tube group cost was above one hour.Save the width that material cost depends on head box: for the wide head box of about 60cm, compare cost savings about 20% to 30% with traditional pipe group; For the wide head box of about 3m, save approximately 30% to 40% than the pipe group of tradition manufacturing, and for the wide head box of about 5.5m, save about 50% to 60% than the pipe group of tradition manufacturing.The weight of said turbulator or said pipe group will reduce nearly 50%.The weight of said head box reduces makes the head box bearing frame and the size of the equipment of enclosing reduce.
The installation and the control that reduce to simplify head box position in the paper machine of the weight of head box and size.
Owing to can select the differently contoured passage in the said structural detail for different purpose (for example slurry stream quickens in any suitable manner or expands or control); Therefore the slurry stream road can have different cross sections along its length; Same geometry or the different geometries circle of the same area, rectangle, ellipse, the polygon that for example are used for slurry stream; Or, can have different slurry flow area or cross section as selecting.The above-mentioned technology ratio that passes through to be proposed is through utilizing traditional stainless steel tube can realize above purpose more easily during manufacture.
Description of drawings
Referring now to accompanying drawing the present invention is described in further detail.
Fig. 1 is the profilograph according to the structural detail of first embodiment of the invention.
Fig. 2 is the profilograph according to the structural detail of second embodiment of the invention, and the form with enlarged drawing among Fig. 2 A shows threaded insert.
Fig. 3 is the profilograph according to the structural detail of third embodiment of the invention, and the form with enlarged drawing among Fig. 3 A shows the pressure insert.
Fig. 3 B shows the sectional view I to IV according to the structural detail of Fig. 3, shows the different cross section shape in the slurry stream road that is arranged in the structural detail.
Fig. 4 is the profilograph that is used for according to the upper reaches structural detail of the structural detail of first functional part of the present invention and second functional part; First functional part is the form of turbulator unit, and second functional part is the first pipe unit form that is connected with the turbulator unit.
Fig. 5 is the profilograph of downstream configurations element of first functional part that is the form of turbulator unit, and the turbulator unit is connected with the upper reaches first pipe unit.
Fig. 6 is the profilograph that comprises the head box of three difference in functionality parts that are unit, balance cylinder, first pipe unit and turbulator unit form, and the turbulator unit is assembled by many structural details according to the present invention.
Fig. 7 is the profilograph of head box that comprises the difference in functionality parts of two forms that are unit, balance cylinder and turbulator unit, and turbulator directly is connected with the unit, balance cylinder and is assembled by many structural details according to the present invention.
Fig. 8 representes the turbulator unit that is assembled by a plurality of structural details according to the present invention the gap to be set between the structural detail, and shown in the enlarged drawing among Fig. 8 A, to seal said gap through band.
Fig. 9 representes to comprise the profilograph of head box of the difference in functionality parts of two forms that are mixed cell and turbulator unit, and the turbulator unit is assembled by many structural details according to the present invention.
Figure 10 representes the profilograph according to the mixed cell of Fig. 9.
Figure 11 representes the sectional view according to the mixed cell of Fig. 9.
The specific embodiment
Fig. 1 representes the profilograph according to the structural detail 17 of first embodiment of the invention.Structural detail 17 comprises the one piece 1 of solid, and this one piece 1 has a plurality of passages 2 that connect one piece 1 from the upstream extremity 1A of structural detail 17 to downstream 1B.Passage 2 limits the stream of paper pulp, and with the arranged in form of row and column.For example, one piece 1 can comprise four lines passage 2, in every row, all has three passages, as Fig. 3 and Fig. 3 B are disclosed.
The paper fibre stuff type (the for example concentration of slurry, fiber synthetic etc.) of being transported by each row of channels 2 can change, and the result can form multi-layer web.For example, if the embodiment of Fig. 8 is used for three layers of head box, then go up most the slurry that two row of channels are used for the first kind, the middle two rows passage is used for the slurry of second type, and two row of channels are used for the slurry of the 3rd type down.
Preferably; One piece 1 is processed by high performance polyurethane is molded; But also can use any other polymer (for example polyurethane foam, PVDF plastics, C-PVC, polypropylene, polyethylene-HDPE, polyacetals, epoxy resin, phenolic resins, vinyl esters) and/or synthetic material or light metal or metal dust or pottery, and can use suitable manufacturing approach with desired properties.
When one piece 1 was made by high-performance polyurethane elastomer, it preferably formed through molded in the computer control injector with molded form.Polymer directly is pumped into the forming tool from machine.Forming tool is processed by machining aluminium usually.After the official hour section (for example about 1 hour), open instrument and make the demoulding of said one piece, that is, remove from forming tool.Then molded one piece 1 is placed in the stove (for example 100 ℃ of held 16 hours) with regelate.Remove the unnecessary overlap (excess flashing) of part 1 then through sharp knife or lancet.Hardness, porosity and other relevant parameter of checking one piece 1 then also have overall appearance, meet the requirement that sets with the quality of guaranteeing the one piece.Can also extract keeping sample, to be used for the quality control of back at the testing equipment place from mold.At last, can insert (for example metal insert) be coupled in the passage of (for example be press-fitted or be screwed to) said one piece (referring to Fig. 2), thereby form final structural detail.
Certainly, can use optional other known suitable method of manufacture or technology.
Because above-mentioned manufacturing approach, the inner surface of passage can be made very smoothly, so passage is without any need for liner or additional operations, for example as the inner surface of the corresponding conventional steel of traditional turbulator.
Preferably, being sized to of one piece makes this one piece be easy to molded but also be easy to be assembled in the pipe unit.The size of passage, form and quantity are suitable for making the one piece to become the pipe unit type of parts in the one piece.
The material of one piece should stand the pressure of slurry stream.Therefore, required wall thickness depends on the material that the one piece is used between the adjacent row of passages and between the adjacent lines of each passage.The partition wall of the adjacency channel in the one piece of being processed by polyurethane should be preferably 2.0mm at least, too large deformation can not take place can stand the flowing pressure in the passage.However, it should be understood that if adopt other material to make part 1 then wall thickness between the adjacency channel or distance can change.Usually, the preferred wall thickness between the adjacency channel 2 can change between the 50mm at 0.2mm according to selected one block of material.
Preferably, structural detail 17 comprises attachment arrangement (for example recess 6), is used for structural detail is installed to the housing 12 of head box 10, perhaps is used for other functional part or structural detail in structural detail and the head box 10 are arranged together.
Has the recess 4 that is used for mounting blades 5 (like the known pulp root piece of prior art or so-called wedge and/or turbulent blade) on the downstream 1B of structural detail 17 and between adjacent pulp flow channel 2.As shown in Figure 8, when being assembled to a plurality of structural detail 17A, 17B, 17C in the turbulator unit 11, the recess 4 of structural detail forms groove at downstream 1B place, and said groove extends along transverse machine, and as shown in Figure 2, and blade 5 can insert in this groove.
In order to be connected with upper reaches functional part, structural detail 17 can comprise insert or the insert 3 in the upstream portion that is arranged in passage 2.Fig. 2 shows the vertical section of structural detail 17, and this structural detail 17 is swum the insert 3 that end 1A place comprises the form that is metal lining or other suitable Connection Element above that, is used for the passage 2 of structural detail is connected to the pipe 7 ' of the first traditional pipe unit 7.As showing with the form of enlarged drawing among Fig. 2 A insert 3 is screwed in the passage 2, therefore manages 7 ' and insert in the insert 3.In this embodiment, passage 2 is made for identically on the whole length of one piece 1 restrains, however the cross-sectional geometry of passage 2 can change according to expectation, for example be the form of circle, ellipse, rectangle etc.
Though only show the four lines passage here, should be understood that the passage line number in the one piece 1 can be from 1 to changing more than 9, the number of channels in every row can be from 1 to variation 8 or more.
The convergence form of the passage 2 of one piece 1 makes slurry stream quicken.
Preferably, the sectional area of pipe 7 ' downstream is less than the sectional area of passage 2 upstream extremities.This cross section product moment causes the flow channel of slurry to become big suddenly, has therefore improved the flocculation again of paper fiber, and in flowing, produces small turbulent flow.In this embodiment, insert 3 with insert pipe 7 ' and be arranged for and make the slurry stream road become big suddenly, therefore, cause the staple fibre in the slurry stream to destroy, the opening section that is used for slurry stream that inserts pipe 7 ' is long-pending littler than the upstream portion of passage 2.
Should be understood that the functional part of different head boxs or the cross section flow surface product moment between the unit can arrange with many different modes (for example, like Fig. 2 or shown in Figure 7, through with any suitable embedding
Going into part 3,3 ' inserts in the passage 2), but be not limited to only use insert 3,3 '.
As shown in Figure 3, can insert 3 be pressed onto among the upstream open 2A of each passage 2 alternatively, shown in the enlarged drawing of Fig. 3 A.
Shown in Fig. 3 B, the import 2A of passage 2 and the form of outlet 2B can change in shape widely, in the I to IV of cross section, are circle, ellipse, rectangle, polygon and other selected form.Opening 2A on upstream extremity 1A and the downstream 1B and the shape of 2B can be identical or different, and select according to the stream of the slurry in these passages parameter to be achieved.
Fig. 4 shows another embodiment according to head box 10 of the present invention, wherein is installed in successively in the housing 12 of head box 10 according at least two structural details 17,18 of the present invention (being the turbulator unit 11 and first pipe unit 15 in this case) order.Turbulator unit 11 comprises a structural detail 17 or a plurality of structural details 17 of installing side by side along the cross section of head box 10.Equally, first pipe unit 15 comprises a structural detail 18 or along a plurality of structural details 18 of laterally installing side by side of head box 10.Each structural detail 17,18 comprises the one piece of being processed by high-performance polyurethane elastomer, and said one piece forms according to above-mentioned method is molded.
The cross sectional shape and/or the area that should be understood that the passage in first pipe unit 15 can also with the cross sectional shape of the passage of turbulator unit 11 and/or area is the same change.
The said one piece of structural detail 17,18 is made for and makes them comprise cooperation attachment arrangement 6 (for example projection or depression), and with location structure element 17,18 accurately, thereby corresponding passage 2 is fitted to each other.Preferably, structural detail 17,18 is packed in the housing 12 of head box 10 regularly, thus, does not need above-mentioned insert that first pipe unit 15 is connected with turbulator unit 11.
Fig. 5 shows an embodiment again that in head box 10, forms the structural detail 17 of second pipe unit or turbulator 11 according to of the present invention.With first pipe 7 ' of the first traditional pipe unit 7 insert 3 with the upstream extremity 1A place of the passage 2 of the mode insert structure element 17 identical with the above.Yet, in this case, do not have the root piece of branch or wedge at the downstream 1B place of structural detail 17.
Therefore, when assembling during, need to make the functional part 11 that is the second pipe unit form according to the head box 10 of Fig. 5.As stated, this inserts through molded one piece 1 and with insert 3 among the upstream extremity 1A of passage 2 of one pieces 1 and carries out, thereby forms structural detail 17.Afterwards,, that is, make gap 14 is set between adjacent structural detail, and form functional part 11 a plurality of such structural detail 17 as shown in Figure 8 being arranged side by side.Then, functional part 11 is arranged in the housing 12 of head box 10, thereby in the one piece 1 of the structural detail 17 of functional part 11 and housing wall, the gap is set.Afterwards, connect the pipe 7 ' and insert 3 of first pipe unit 7, thereby the formation fluid is communicated with between the passage 2 of one piece 1 and the functional part that is positioned at the upper reaches (the for example mixed cell 23 of type shown in Fig. 9 to Figure 11).Optional is, can be at the downstream 1B place of one piece 1 installation pulp root piece 5, and this is shown in Fig. 2.Certainly, the order of these steps can change.
Fig. 6 shows according to head box 10 of the present invention, and this head box 10 comprises housing 12 and isolated difference in functionality parts 8,7,11 and 9 in housing 12.Parts 8 comprise many stable or equiulbrium flow dynamic pressure chambers 8 '.Slurry stream crosses one or more collectors or a plurality of manifold (not shown) is fed in the chamber 8 '.Then, this slurry stream continues to flow in first pipe or passage 7 ' of parts 7 (like Fig. 4 and shown in Figure 5 and as above state bright).Slurry stream is fed to turbulator unit 11 (it also has above-mentioned illustrated function) from functional part 7, and further is fed in the weir plate chamber 9, slurry stream continues to flow to the slice opening on the downstream of housing 12 in weir plate chamber 9.Slurry is transported on the forming net (not shown) from slice opening.Weir plate chamber 9 can comprise that at least one divides root piece 5, this minute root piece 5 be installed on the downstream 1B of turbulator unit 11, and weir plate chamber 9 in, separate different slurries and flow.As selection, can between the branch root piece 5 in the identical slurry stream, at least one turbulent blade 5 ' be installed, be used to promote small turbulent flow, and improve the formation of paper web.
Shown in here, two administration-managements 7 ' are transported to next turbulator unit 11 with identical paper pulp from each balance cylinder 8 '.
Another embodiment according to whole head box 10 of the present invention has been shown among Fig. 7.Head box 10 comprises housing 12 and different functions parts, for example directly be connected with turbulator unit 11 and in the weir plate chamber 9 before balance cylinders 8, all these functional parts 8,9 and 11 are spaced apart in housing 12.When not using in the head box 10 for first when pipe, can through other known way (for example be described below through will manage or insert insertion turbulator passage in) the unexpected expansion that is flowing in second tube passage 2 (or flowing to turbulator unit 11) is provided.
Therefore, first pipe unit or functional part 7 can be substituted by insert 3 ' or other suitable device.Insert 3 ' can be forced into or be screwed in the passage 2 of structural detail 1, or fixes through alternate manner well known in the prior art.In this embodiment, two or one of them functional part (unit 11 and unit 8) can be processed by structural detail according to the present invention.
Fig. 8 shows the turbulator unit 11 that is assembled by a plurality of structural detail 17A, 17B and 17C of head box 10, and structural detail 17A, 17B and 17C include according to one piece 1 of the present invention.As selection, can assemble for example other part or unit 7 and 8 of functional part similarly.Because can there be some thermal expansions in the material of one piece 1, and structural detail 17A, 17B and 17C can stand about 20 ℃ to 55 ℃ temperature, so should be mounted between the one piece 1 and have some gaps 14.Preferably, the width in gap 14 is approximately 0.2mm at least to 0.7mm.Yet because the temperature coefficient of different materials is different, so the width in gap 14 can change, and can be different because of making the used material of one piece 1.Form element 13 through at least one gap and guarantee the gap 14 between the two adjacent one pieces 1.Preferably, element 13 is arranged such that its seal clearance 14 simultaneously, flows in the adjacent one piece to prevent paper pulp or other fluid or gas (for example air).Therefore, element 13 can be used as potted component and gap formation element.Element 13 can be arranged in one or more outer surface of each one piece 1.Element 13 can be made into integration with one piece 1,, is made for the integral part of one piece 1, shown in Fig. 8 A that is.Potted component can form at least one band, band from the side 22 of one piece 1, on the end face 20 and the 1 surperficial near normal of the one piece on the bottom surface 21 leave and outstanding in the slurry flow path direction.As selection, these sealed strips or other potted component can be positioned on the side 22 of structural detail, and can tilt with respect to the slurry flow path direction.Preferably; The band of one piece 1 is located such that the band cooperation and the interconnection on adjacent one piece surface; Shown in the enlarged drawing of Fig. 8 A; Wherein on a surface of one piece 1, arrange the wall scroll band, and on the apparent surface of one piece 1, arrange two bands that these strap arrangements become to make the wall scroll band to be engaged between two bands of adjacent one piece 1 of same type.As selection, only an element or a band that highly is similar to gap 14 can guarantee to exist gap 14 and while seal clearance 14.The height of band is approximately the size in selected gap 14, and band preferably passes through alternate manner with the 1 molded or manufacturing of one piece.As selection, the band of two adjacent one pieces or potted component can be arranged to against each other, thereby each element all contacts with the element of relative one piece.What in this arrangement, the height of each element only need be for gap width is half the.Band or potted component can for example be fixed to one piece 1 through adhesive or other suitable manner after this one piece is so made, rather than as the integral part of one piece 1.As selection; When assembling head box 10; Can with band or potted component be positioned between adjacent one piece and the housing 12 and/or between a plurality of one piece and the housing 12; Band or potted component can be adhered to one piece surface in this case, and can remain on correct position through the confining force of housing 12.
Therefore, the gap forms the surface that gap that element 13 can be arranged to the adjacent one piece of butt forms the housing 12 of element or surface or head box 10.The gap forms element 13 can have any suitable section form, that is, and and the semicircle shown in Fig. 8 A.Preferably, it is elongated and continuous that the gap forms element 13, makes their extend along one piece surperficial whole length or width.
Figure 11 representes the embodiment again according to head box of the present invention.Head box 10 comprises second pipe unit or turbulator 11, and this turbulator 11 comprises a plurality of according to the structural detail that is arranged side by side 17 of the present invention.At the upper reaches of turbulator 11, head box 10 comprises first pipe unit 7, and this first pipe unit 7 comprises many metal tubes, and these metal tubes are attached to the insert in the passage of turbulator 11.At the upper reaches of first pipe unit 7, head box 10 comprises mixed cell 23.At the upper reaches of mixed cell 23, head box 10 comprises manifold 24, is used for to mixed cell 23 supply paper pulp.
Mixed cell 23 comprises a plurality of structural details 25 that are arranged side by side along the cross-wise direction of head box 10.Figure 12 and 13 has represented such structural detail 25 in more detail.Structural detail 25 comprises one piece 1, and in one piece 1, a plurality of through channel 26 are arranged to paper pulp is guided to mixing chamber 27 from manifold 24.Be divided into two groups through 26, every group of passage leads to independent mixing chamber 27.And feed path 28 leads to each mixing chamber 27.Feed path 28 is arranged to be used for the fluid-mixing that comprises pulp additive is fed to mixing chamber 27, and fluid-mixing is arranged in the papermaking with prior art known manner own to be mixed with paper pulp.
As stated, the one piece 1 of structural detail 25 preferably forms by high-performance polyurethane elastomer is molded.And preferably, as stated, insert 29 is coupled in the passage 26.
Have the head box that comprises according to the functional part of structural detail of the present invention and can be used in the web-manufacturing machine of any kind for example traditional paper, cardboard or tissue machine.
Should be understood that the embodiment of the present invention shown in being not limited to, and should be interpreted as and be in the spirit of the present invention.The present invention is used in any one functional part or the unit in the head box that uses in the paper machine.
At last, should be understood that the structural detail of being processed by structural detail according to the present invention can be used for using in the new head box and when constructing once more or renovating existing head box.
Claims (25)
1. the structural detail (17 of the functional part (8,11,15,23) of a head box (10) that is used for web-manufacturing machine; 18,25,30), this structural detail (17; 18,25,30) comprise one piece (1), comprise a plurality of passages (2) in this one piece; These a plurality of passages are defined for the flow channel of paper pulp, and said passage (2) extends through this one piece (1) from the upstream extremity (1A) of said one piece (1) to downstream (1B), and this structural detail is characterised in that: this structural detail (17,18; 25,30) comprise that also at least one first gap forms element, this first gap forms arrangements of elements and becomes to guarantee said structural detail (17; 18,25,30) at least one outer surface of said one piece (1) and the clearance of predetermined width (14) between the adjacent elements.
2. structural detail according to claim 1 (17,18,25,30) is characterized in that, said adjacent elements is the housing (12) of said head box (10).
3. structural detail according to claim 1 (17,18,25,30) is characterized in that, said adjacent elements is another structural detail (17,18,25,30).
4. according to each described structural detail (17,18,25,30) in the claim 1 to 3, it is characterized in that said at least one first gap forms arrangements of elements on the first surface of said one piece (1).
5. structural detail according to claim 4 (17,18,25,30); It is characterized in that this structural detail (17,18; 25,30) comprise that also at least one second gap on the second surface that is arranged in said one piece (1) forms element, said second surface is opposite with said first surface.
6. structural detail (17 according to claim 5; 18,25,30); It is characterized in that; Said first gap forms element and comprises the wall scroll band, and said second gap forms element and comprises two bands, and the said wall scroll band and the said pair of strap arrangements become to make said wall scroll band to be engaged between the said pair of band of adjacent one piece (1) of same type.
7. structural detail according to claim 5 (17,18,25,30) is characterized in that, said at least one first gap forms element and said at least one second gap forms one or more surfaces that element is attached to said one piece (1).
8. structural detail according to claim 5 (17,18,25,30) is characterized in that, said at least one first gap forms element and said at least one second gap forms the integral part that element is made for said one piece (1).
9. structural detail (17 according to claim 7; 18; 25,30), it is characterized in that; Said at least one first gap forms element and said at least one second gap formation element is continuous, and the whole length or the width that make said at least one first gap form said one or more surfaces of element and said at least one second gap formation element said one piece in edge (1) extend.
10. structural detail according to claim 9 (17,18,25,30) is characterized in that, said at least one first gap forms element and becomes sealing one or more said gaps (14) with said at least one second gap formation arrangements of elements.
11. structural detail according to claim 1 (17,18,25,30) is characterized in that, said one piece (1) is processed by in polymer, light metal and the pottery one of them.
12. structural detail according to claim 1 (17,18,25,30) is characterized in that, said one piece (1) is processed by in synthetic material and the metal dust one of them.
13. structural detail according to claim 11 (17,18,25,30) is characterized in that said polymer is one of them in polyurethane, polypropylene, polyacetals, epoxy resin, phenolic resins and the vinyl esters.
14. structural detail according to claim 1 (17,18,25,30) is characterized in that, said one piece (1) is processed by in polyurethane foam and the plastics one of them.
15. structural detail according to claim 1 (17,18,25,30) is characterized in that, said one piece (1) is processed through molded, in casting, inject, extrude and pushing one of them.
16. structural detail according to claim 1 (17,18,25,30) is characterized in that, the cross sectional shape of the said passage (2) of said one piece (1) and/or area of section change along the length of said passage (2).
17. structural detail according to claim 1 (17,18,25,30) is characterized in that, the wall thickness between two adjacency channels (2) of said one piece (1) is at least 2mm.
18. structural detail according to claim 1 (17,18,25,30) is characterized in that, in the said passage (2) of said one piece (1), arranges insert (3,3 ').
19. functional part (8,11,15,23) that is used for the head box (10) of paper machine; Said functional part (8,11,15; 23) comprise according to each described structural detail (17,18,25 in the claim 1 to 18; 30), said structural detail (17) comprise first structural detail (17B) and at least one second structural detail (17A, 17C).
20. functional part according to claim 19 (8,11,15; 23); Wherein said first structural detail (17B) and said second structural detail (17A 17C) is arranged side by side, thus said first structural detail (17B) and the said second structural detail (17A; The upstream extremity (1A) and downstream (1B) position of said one piece (1) 17C) are consistent; Said functional part is characterised in that, and said first structural detail (17B) and said second structural detail (17A, gap 17C) forms element (13) and is arranged between the first and second adjacent structural details; Be used to guarantee said adjacent first and second structural details (17A, 17B; 17B, the clearance of predetermined width (14) between 17C).
21. functional part according to claim 20 (8,11,15,23) is characterized in that, said gap forms element (13) and comprises and be arranged in said adjacent first and second structural details (17A, 17B; 17B, the band between the said one piece (1) 17C).
22. functional part according to claim 21 (8,11,15,23) is characterized in that, said band is attached to said adjacent first and second structural details (17A, 17B; 17B, the surface of said one piece (1) 17C).
23. functional part (8 according to claim 22; 11,15,23); It is characterized in that; Said gap formation element (13) is continuous, thereby said gap forms whole length or the width extension of element (13) along the said surface of said one piece (1), and said gap formation element (13) is arranged to seal said gap (14).
24., it is characterized in that one or more said gaps (14) are enough to make said adjacent first and second structural details (17A, 17B according to each described functional part (8,11,15,23) in the claim 20 to 23; 17B, said one piece (1) thermal expansion 17C).
25. functional part according to claim 24 (8,11,15,23) is characterized in that the width of said gap (14) is 0.2mm to 0.7mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SEPCT/SE2007/000190 | 2007-03-01 | ||
| SE2007000190 | 2007-03-01 | ||
| PCT/SE2008/000166 WO2008105714A1 (en) | 2007-03-01 | 2008-02-29 | Structural element for a functional member of a headbox in a web-manufacturing machine, functional member and headbox made thereof, and associated methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101622399A CN101622399A (en) | 2010-01-06 |
| CN101622399B true CN101622399B (en) | 2012-10-17 |
Family
ID=39721485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880006666.0A Expired - Fee Related CN101622399B (en) | 2007-03-01 | 2008-02-29 | Structural element for a functional member of a headbox in a web-manufacturing machine, functional member and headbox made thereof, and associated methods |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2129830A4 (en) |
| CN (1) | CN101622399B (en) |
| WO (1) | WO2008105714A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI122144B (en) | 2010-04-08 | 2011-09-15 | Metso Paper Inc | Design element for an inlet box in a fiber web machine |
| FI122895B (en) | 2010-12-21 | 2012-08-31 | Metso Paper Inc | FLOW PIPE FOR FIBER BOX TURBOULER GENERATOR AND FIBERBOARD BOX TURBULATOR GENERATOR |
| FI20115407A (en) * | 2011-04-28 | 2012-10-29 | Vaahto Oy | Distribution channel system in conjunction with a paper machine's inlet box |
| FI125215B (en) * | 2011-11-02 | 2015-07-15 | Valmet Technologies Inc | Headbox of fiber machine |
| CN103276618A (en) * | 2013-05-30 | 2013-09-04 | 华南理工大学 | Papermaking chemical adding device |
| 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 |
| CN103669076A (en) * | 2013-12-23 | 2014-03-26 | 云南中烟昆船瑞升科技有限公司 | Efficient pulp and water mixing device |
| DE102016114040A1 (en) * | 2016-07-29 | 2018-02-01 | Voith Patent Gmbh | Flow module and method for producing a flow module for a headbox of a paper machine |
| DE102020103003A1 (en) * | 2020-02-06 | 2021-08-12 | Voith Patent Gmbh | Flow grid and method of making a flow grid |
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| US3923593A (en) * | 1971-12-03 | 1975-12-02 | Beloit Corp | Multiple ply web former with divided slice chamber |
| US4376014A (en) * | 1979-04-12 | 1983-03-08 | Beloit Corporation | Headbox for forming multi-ply sheets |
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| US4897160A (en) * | 1981-11-06 | 1990-01-30 | J. M. Voith Gmbh | Head box for a paper making machine |
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| US3528882A (en) * | 1964-07-23 | 1970-09-15 | Black Clawson Co | Reinforced headbox for paper machine |
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| FI78750B (en) * | 1982-07-20 | 1989-05-31 | Escher Wyss Gmbh | FLERSKIKTSINLOPPSLAODA FOER MATANDE AV PAPPERSMASSA TILL EN VIRA. |
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| US5082531A (en) * | 1990-10-26 | 1992-01-21 | Hasegawa Machinery Limited | Head box in a paper machine |
| DE4318430C2 (en) * | 1993-06-03 | 1997-03-27 | Schultz Hans Joachim Dr Ing | Headbox system of a paper machine |
| FI98938C (en) * | 1996-06-20 | 1997-09-10 | Valmet Corp | Apparatus for combining the dilution flow with the pulp flow from the paper / board divider |
| DE19830872A1 (en) * | 1998-07-10 | 2000-01-13 | Voith Sulzer Papiertech Patent | Stock inlet turbulence generator for a papermaking machine |
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2008
- 2008-02-29 CN CN200880006666.0A patent/CN101622399B/en not_active Expired - Fee Related
- 2008-02-29 WO PCT/SE2008/000166 patent/WO2008105714A1/en active Application Filing
- 2008-02-29 EP EP08712750A patent/EP2129830A4/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3923593A (en) * | 1971-12-03 | 1975-12-02 | Beloit Corp | Multiple ply web former with divided slice chamber |
| US4376014A (en) * | 1979-04-12 | 1983-03-08 | Beloit Corporation | Headbox for forming multi-ply sheets |
| US4897160A (en) * | 1981-11-06 | 1990-01-30 | J. M. Voith Gmbh | Head box for a paper making machine |
| US4895624A (en) * | 1986-05-12 | 1990-01-23 | Valmet-Ahlstrom Oy | Turbulence generator made of plastic with ceramic coated flow ducts in the head box of a paper machine |
| US5022965A (en) * | 1988-09-26 | 1991-06-11 | Valmet Paper Machinery Inc. | Method and device in a head box of a paper machine for controlling distribution of fiber orientation in a paper web |
| EP0912797B1 (en) * | 1996-03-08 | 2004-05-26 | Metso Paper Karlstad Aktiebolag | An arrangement for feeding stock to a headbox in a papermaking machine |
| EP0939842B1 (en) * | 1996-06-12 | 2002-09-04 | Metso Paper Karlstad Aktiebolag | A multilayer headbox for a papermaking machine |
| WO1999036613A1 (en) * | 1998-01-16 | 1999-07-22 | Beloit Technologies, Inc. | Papermaking headbox |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2129830A1 (en) | 2009-12-09 |
| WO2008105714A8 (en) | 2008-11-27 |
| CN101622399A (en) | 2010-01-06 |
| WO2008105714A1 (en) | 2008-09-04 |
| EP2129830A4 (en) | 2012-06-13 |
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