CN202152434U - Twin-wire former for machine for producing web of fibrous material - Google Patents
Twin-wire former for machine for producing web of fibrous material Download PDFInfo
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- CN202152434U CN202152434U CN2009901004017U CN200990100401U CN202152434U CN 202152434 U CN202152434 U CN 202152434U CN 2009901004017 U CN2009901004017 U CN 2009901004017U CN 200990100401 U CN200990100401 U CN 200990100401U CN 202152434 U CN202152434 U CN 202152434U
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- pair
- net former
- lath
- forming
- punching press
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
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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
- D21F1/48—Suction apparatus
- D21F1/483—Drainage foils and bars
- D21F1/486—Drainage foils and bars adjustable
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Abstract
The utility model relates to a twin-wire former for a machine for producing a web of fibrous material (2), with two endless circulating wires (3, 4), which both run over a circumferential region of a respective breast roll (5, 6), which then converge, at least until they reach a curved impingement shoe (9), thereby forming a wedge-shaped material entry nip (10) directly receiving the fibrous material suspension (12) delivered by a headbox (11), and which subsequently form a twin-wire section (14), in which the two wires and the fibrous material suspension lying therebetween are led over the impingement shoe and a forming suction box (15) located indirectly or directly downstream of the impingement shoe in the wire running direction and arranged on the side of the twin-wire section opposite the impingement shoe (9), wherein the impingement shoe has a curved cover (16) provided with a number of cover strips (17) arranged one after the other in the wire running direction and with free dewatering openings (18) lying therebetween, and wherein a number of strips (19.1 to 19.3) which can be pressed flexibly against the adjacent wire (4) are arranged in the region of the twin-wire section lying opposite the forming suction box (15). The twin-wire former according to the invention is characterized in that at least one strip (20.1, 20.2) which can be pressed flexibly against the adjacent wire (3) is arranged in the region of the twin-wire section lying opposite the impingement shoe, and is arranged at least partially opposite the free dewatering openings of the impingement shoe.
Description
Technical field
The present invention relates to a kind of fiber material web material that is used for making, especially make the used two net formers of machine of paper web or board web material, this pair net former has the forming web of two rotating endless (endlos); These two forming webs move process on the outer regions of each breast roll; After this, this forming web when arriving crooked punching press shoe (Impingementschuh), is joined under the situation in the charging slit that forms wedge shape at least; At least a fibrous substance suspension that from head box, flows out as the fibrous substance suspension beam is directly admitted in said charging slit; On two forming webs, constitute simultaneously corresponding beam and touch a little, and two forming webs subsequently at least the piecewise form two network segments, in this pair network segment; Two forming webs and at least a fibrous substance suspension that is in therebetween are directed carrying out and at least one moulding aspirator through punching press; Said moulding aspirator is arranged on punching press indirectly or directly and carries out the back, and said moulding aspirator is arranged in carrying out on the opposed side with punching press of two network segments on the traffic direction of forming web; Wherein, Punching press is carried out has crooked lining face (Belag), and this lining is worn a plurality of at the lining panel bar of arranging successively on the forming web traffic direction (Belagleiste) and have the dehydrated mouth that opens wide that is between the lining panel bar, and wherein; Two network segments with the opposed zone of moulding aspirator in be furnished with a plurality of laths, these laths can flexibly be pressed to the card against forming web on.
Background technology
For example apply for the known so two net formers of WO 2005/068714A1, and this pair net former generally is known as so-called lath-slit former (" Blade-Gapformer ") in professional domain by PCT.
And bring known defective in the professional domain for this pair of net former; Promptly; This pair of net former has limited flexibility aspect the possible variation of reply Substance and forming web speed; Based on the design of the structure and the operation aspect of this pair net former, the human window of this pair net former is very narrow.
In addition; In this pair of net former; Having at least a support scheme that is in the forming web of fibrous substance suspension therebetween to two is not the best, thereby in Substance cross direction profiles curve (Querprofil) and moulding cross direction profiles curve, often bigger fluctuation possibly occur.Especially work as in order to reach bigger Substance; When making labial lamina opening on the head box that at least a fibrous substance suspension is provided big; The weight of at least a fibrous substance suspension of in the middle of forming web, carrying is so big; So that because the lath pressure pulse of the shoe shape part of centrifugal force and bending has produced the shear wave with obvious amplitude in forming web.This shear wave makes the cross direction profiles curve produce fluctuation usually.
By the known a kind of two net formers that are used to make the machine of fiber material web material of European patent application EP 1 586 702 A1; The forming web of this pair net former is operation process on breast roll again; And afterwards; At least when arrival is constituted as the shaped device of punching press shoe, under the situation that forms wedge shape charging slit, join, and next form the two network segments that do not further describe.In this case, can two network segments with punching press carry out be provided with on the opposed zone a plurality of can flexibly be pressed to the card against forming web on lath.
And by the vertical former of the known a kind of paper machine of Germany Patent document DE 40 14 403 C2, in particular for making printing paper and liner board or the test liner that does not contain wood pulp, this vertical former has vertical basically forming part section.The forming part section that is implemented to two network segments is made up of at least two shaping areas, in said shaping area, is provided with mutually the profile member of layout opposed to each other, and this profile member acts on one of them or another forming web.In each shaping area, the punching press of preferably being aspirated is carried out and is acted on one of them forming web as profile member, and the pressure strip bar acts on the forming web as another profile member.In addition, be connected to two breast rolls in front with respect to the forming part section, one in two forming webs guides on these two breast rolls respectively.
In addition, equally by known a kind of two network segment formers that are used to make the machine of fiber material web material among European patent application EP 1 489 229 A1, this pair network segment former has the breast roll that is aspirated.In the zone of two network segments, be furnished with a plurality of profile members apart at homonymy at the back at this breast roll, and on the opposite side of two network segments, be provided with other elements at the back, for example shaping lath or similar elements at this breast roll.
In said file, there is disadvantage all by known pair of net former; Promptly; Aspect the possible variation of reply Substance and forming web speed; This pair net former only has limited flexibility, because the design of its structure and operation aspect, the human window of this pair net former is only very narrow.
Summary of the invention
Task of the present invention is; To improving as follows like the two net formers that start said type; So that can as much as possible, preferably even fully avoid the defective of known paper manufacturing systems, that is, this pair net former can move with bigger human window.
Particularly based on the preparatory as far as possible flexibly dewatering period that is used to realize best moulding level, this pair net former should have big Substance scope, velocity interval and also have the cutting angle scope.
The invention provides a kind of pair of net former, be used to be used for making the machine of fiber material web material, said pair of net former has two rotating endless forming webs; These two forming webs are operation process on the outer regions of corresponding breast roll respectively; After this, said two forming webs when arriving crooked punching press shoe, are joined under the situation in the charging slit that forms wedge shape at least; At least a fibrous substance suspension that from head box, flows out as the fibrous substance suspension beam is directly admitted in said charging slit; Simultaneously on said two forming webs, constitute corresponding beam respectively and touch a little, and said two forming webs subsequently at least the piecewise form two network segments, in the said pair of network segment; Said two forming webs and the said at least a fibrous substance suspension that is between said two forming webs are directed carrying out and at least one moulding aspirator through said punching press; Said moulding aspirator is arranged in said punching press indirectly or directly and carries out the back on the forming web traffic direction, and said moulding aspirator is arranged in carrying out on the opposed side, wherein with said punching press of the said pair of network segment; Said punching press is carried out has crooked lining face; Said lining is worn a plurality of lining panel bars of on the forming web traffic direction, arranging successively, and has the dehydrated mouth that opens wide that is between the said lining panel bar, and wherein; The said pair of network segment with the opposed zone of said moulding aspirator in be furnished with a plurality of laths; Said a plurality of lath can flexibly be pressed to the card against forming web on, it is characterized in that, be furnished with at least one lath in the opposed zone carrying out of the said pair of network segment with said punching press; Said at least one lath can flexibly be pressed to card against forming web on, and said at least one lath that can flexibly compress is arranged with the said unlimited opposed mode of dehydrated mouth of carrying out with said punching press at least in part.
In like the two net formers that start said type; Said task solves according to the present invention as follows; Promptly; Be provided with by at least one lath carrying out in the opposed zone of two network segments with punching press, this lath can flexibly be pressed to card against forming web on, and the dehydrated mouth that opens wide carried out with punching press at least in part of at least one said lath that can flexibly compress layout opposed to each other mutually.
Can be able to fully as follows solve according to task of the present invention.In this case, a plurality of corresponding laths can be set also, especially two or three corresponding laths.
Through utilizing different test parameterss to carry out finding after the test of many times, must there be the moderate fiber web density of material that is between 2% and 5% at the lath place that can flexibly compress.Because only in this density of material scope, could between the fiber pad (Fasermatten) that has existed, there be liquid fibrous substance suspension core material (Faserstoffsuspensionskern), this fibrous substance suspension core material can also be retrofited through the lath that can flexibly compress.
When under the constant situation of head box labial lamina opening, when Substance improved, the zone with moderate fiber web density of material was obviously slower owing to thicker fibrage dewaters, thereby moves towards machine direction.This just means that shaping lath must use more behindhand.Labial lamina opening at Substance decline and head box place opposite situation can occur when keeping constant.Zone with moderate fiber web density of material be in reverse to machine run direction move, thereby shaping lath must use earlier.Because too high head box stream pulp density when causing the moulding variation, this " effect of vacillating (Wanderungseffekt) " with zone of moderate fiber web density of material also will strengthen when wanting to avoid.So, that is when Substance is bigger, must open labial lamina, so that when Substance is bigger, keep density of material constant.This just means; Zone with moderate fiber web density of material not only can be as described above because the slower dehydration of bigger Substance is moved along the machine run direction, but also can be extraly because the raising of the water yield and moving along the machine run direction.When Substance reduces, must close labial lamina, and this effect is moved towards in the opposite direction.
Because the lath that can flexibly compress can not be along the machine run direction in like the two net formers that start said type; Can not be in reverse to the machine run direction and move, so must mate through also having second dewatering elements (" moulding aspirator ") all to be configured with the lath that can flexibly compress first dewatering elements (" punching press shoe ").If need lath as early as possible based on running parameter, at least one lath that can flexibly compress that so just uses punching press to carry out; And when needing this lath more behindhand, just use at least one lath that can flexibly compress on the moulding aspirator.Thus, even if labial lamina open area broad also can be realized good and glitch-free moulding in fiber material web material to be made.
This lath that can flexibly compress is in other advantages of the layout of bilateral: forming web is better supported, thus, improved the cross direction profiles curve and the moulding cross direction profiles curve of Substance.Especially when the labial lamina opening that makes the head box place that exports at least a fibrous substance suspension in order to reach bigger Substance is bigger; It is so big that the weight of at least a fibrous substance suspension of in the middle of forming web, carrying becomes; So that because centrifugal force and the crooked lath pressure pulse of carrying out the shape part can produce the shear wave with obvious amplitude in forming web.Through supporting these two forming webs very early and on bilateral ground, the lath by carrying out and on the moulding aspirator, can flexibly compress in punching press can reduce or prevent fully such amplitude significantly aspect amplitude.
In first preferred implementation; The lath that can flexibly compress is by preferably controlling/adjustable operating mechanism; Can be at least between resting position and run location, move, in run location, can utilize selectable servo force with this lath be pressed onto card against forming web on.The running parameter of this operating mechanism through changing for example mentioned through the lath that from adjacent forming web, can flexibly compress fully, and allows rapid and the system matches of process safety.
In addition, the lath that can flexibly compress is seen on the forming web traffic direction in its run location; Preferably arrange with respect to 3 one-tenth following α ground, angle of the forming web that is reclining; Said angle α is at 30 ° to 170 °, preferably at 65 ° to 155 °, especially in 80 ° to 140 ° scope.The lath utmost point that this angular region allows flexibly to compress paste effectively and with working be put into obedient against forming web on.
The lath that can flexibly compress preferably also has at 25 ° to 70 ° with respect to the forming web that is reclining in its run location; Preferably at 35 ° to 60 °; Especially the scraping angle in 45 ° to 60 ° scopes, thus can in the zone that punching press is carried out, scrape off a large amount of water by interference-free.
In addition, the moulding aspirator can have at least two abilities by the shaping area that loads with preferred different low pressure.Thus, the fiber material web material in the formation is dehydrated gentlelyr constantly in its dehydration process.
At this moment in order to be provided for the fully liquid fibrous substance suspension core material of remodeling, advantageously, be arranged in lath in the moulding aspirator zone only be arranged in the moulding aspirator along in the zone of first shaping area of forming web traffic direction.
In order in the zone of carrying out in punching press two network segments to be guided and stabilisation fully, this lath preferably has≤150mm, preferably≤100mm, and especially≤width of 60mm.
Punching press is carried out and should or be said to have very big curvature; That is to say and to apply very high pushing force to fibrous substance suspension, thereby can on opposed side, the air that is brought into pushed from least a fibrous substance suspension by forming web tension force (Siebspannung).For this reason, this punching press is carried out has preferably at least that two or more have the bending area of preferred different length, and the radius of said bending area always has bigger value along the forming web traffic direction.The length of first bending area preferably has 15 to 150mm, and the preferably value in 70 to 120mm scopes, and the length of second bending area preferably has the value 90 to 350mm.In addition, the radius of first bending area preferably has 0.3 to 4m, and the preferably value in 1 to 2m scope, and the radius of second bending area preferably has in 1 to 5m scope, preferably the value of 3m.Such size design is especially preferred under high-speed.
In the dehydration for the fiber material web material in formation, this fiber material web material is carried out gentle continuously dehydration, unlimited dehydrated mouth preferably is of different sizes, and said size preferably reduces on value along the forming web traffic direction.
In addition; Preferably possess >=0.5kPa by at least one; Preferably >=2kPa, especially >=low pressure source of the low pressure of 5kPa to punching press carry out with can control/adjustable mode aspirates, so that the air that at least a fibrous substance suspension, contained of sucking-off effectively thus.Thus, the output of air-forming web aqueous mixtures is supported.
Basically be applicable to all possible embodiment according to of the present invention pair of net former, thereby can become 0 ° to 90 ° angle to arrange two network segments with respect to horizontal line.This pair net former promptly can be constituted as horizontal form device, vertical former or inclination former.
Even >=1500m/min; Preferably >=the high forming web speed of 1700m/min under; And under the situation of low Substance, this solution still can realize the operation of two net formers, and this spot of water wave and/or light color occurred in the fiber material web material of having made.
Description of drawings
Other features and advantages of the present invention are by obtaining with reference to the description of accompanying drawing to preferred embodiment.
Wherein:
Fig. 1 illustrates the schematic side elevation according to the used two net formers of machine according to the embodiment of the present invention, that be used for making the fiber material web material;
Fig. 2 is illustrated in the thin portion of two net formers of the machine that goes out with schematic side illustration among Fig. 1, be used for making the fiber material web material; And
Fig. 3 illustrates exemplary chart " about the moulding of labial lamina opening ", the figure shows out when using according to of the present invention pair of net former, about the moulding improvement situation of labial lamina opening.
The specific embodiment
Fig. 1 illustrate not shown further be used to make fiber material web material 2, especially make the schematic side view of two net formers 1 of the machine of paper web or board web material.
This pair net former 1 has two rotating endless forming webs 3,4; Forming web 3,4 moves process on the outer regions 7,8 of each breast roll 5,6; And after this; This forming web is at least when arriving crooked punching press shoe; Under the situation in the charging slit 10 that forms wedge shape, join, at least a fibrous substance suspension 12 that from the head box 11 that only illustrates briefly, flows out with the form of fibrous substance suspension beam 13 is directly admitted in this charging slit 10, on two forming webs 3,4, constitutes beam simultaneously and touches a little P.3, P.4.
Then; Two forming webs of this of two net formers 13,4 piecewise at least form two network segments 14; This two forming webs 3,4 and at least a are in these two forming webs 3, the fibrous substance suspension between 4 12 and are directed carrying out 9 and at least one moulding aspirator 15 through punching press in this pair network segment 14; This moulding aspirator 15 is arranged in punching press indirectly or directly and carries out 9 back on forming web traffic direction S (arrow), and this moulding aspirator 15 is arranged in carrying out on the 9 opposed sides with punching press of two network segments 14.This punching press is carried out 9 and is had crooked lining face 16 at this; This lining face 16 has a plurality of lining panel bars of on forming web traffic direction S (arrow), in turn arranging 17; And have dehydrated mouth 18 (see figure 2)s of opening wide that are between the lining panel bar; And two network segments 14 with moulding aspirator 15 opposed zones in be furnished with four laths 19.1 to 19.4, these laths 19.1 to 19.4 can flexibly be pressed on the forming web 4 that card leans on.
Carrying out in the 9 opposed zones of two network segments 14 with punching press; Be furnished with two laths 20.1,20.2 here; These two laths 20.1,20.2 can flexibly be pressed to card against forming web 3 on, and these two laths are to arrange with punching press 9 the dehydrated mouth 18 opposed modes of opening wide of carrying out.
Each lath 19.1 to 19.4 that can flexibly compress and 20.1 and 20.2 can be in known manner by preferably can control/operating mechanism 21 adjustable and that only illustrate briefly moves (bidirectional-movement arrow 22) at least between resting position and run location; In run location, said lath can utilize selectable servo force F (arrow) be pressed onto the card against forming web 3,4 on.
In addition; In the run location of two laths that can flexibly compress 20.1,20.2 shown in it; On forming web traffic direction S (arrow), see, arrange that with respect to α ground, 3 one-tenth angles of the forming web that is reclining angle α is at 30 ° to 170 °; Preferably at 65 ° to 155 °, especially in 80 to 140 ° scope.At this; Has scraping angle β with respect to the forming web that is reclining 3 in each run location of lath 20.1,20.2 shown in it that can flexibly compress; Angle β is at 25 ° to 70 ° in this scraping, preferably at 35 ° to 60 °, and (see figure 2) in 45 ° to 60 ° scope especially.
Moulding aspirator 15 has two can be by the shaping area 23.1,23.2 that loads with preferred different low pressure pu23.1, pu23.2; Wherein, said low pressure pu23.1, pu23.2 can by only illustrate briefly and preferably can control/adjustable low pressure source 24.1,24.2 produces.In addition, 19.1 to 19.4 of laths that are arranged in the zone of moulding aspirator 15 are arranged in the zone of first shaping area 23.1 on forming web traffic direction S (arrow) of moulding aspirator 15.Based on the requirement of technology, also can in second shaping area 23.2, be furnished with the lath that at least one preferably can flexibly compress.
Lath 19.1 to 19.4,20.1 and 20.2 has respectively≤150mm, and is preferred≤100mm, the width B (see figure 2) of especially littler≤60mm.
In the above-described embodiment; This punching press is carried out 9 and is had two zones 25.1,25.2 that possess the bending of preferred different length L 25.1, L25.2, and radius R 25.1, the R25.2 in the zone 25.1,25.2 of said bending always have bigger value along forming web traffic direction S (arrow).The length L 25.1 of first bending area 25.1 has 15 to 150mm, and the long L degree 25.2 of the preferably value in 70 to 120mm scopes, and second bending area 25.2 has the value in 90 to 350mm scopes.Therefore, the radius R 25.1 of first bending area 25.1 has 0.3 to 4m, and the radius R 25.2 of the preferably value in 1 to 2m scope, and second bending area 25.2 has in 1 to 5m scope, preferably the value of 3m.In addition, the dehydrated mouth 18 that opens wide has size (see figure 2) different, that preferably upward on value, diminish at forming web traffic direction S (arrow).
And last by the low pressure source that only schematically illustrates 26 with pu26 >=0.5kPa, preferred >=2kPa, especially >=low pressure of 5kPa with can control/adjustable mode carries out 9 to punching press and aspirates.
Two network segments 14 become 0 ° to 90 ° γ ground, angle to be orientated with respect to horizontal line H, and two forming webs 3,4 have respectively >=1500m/min, preferably >=the forming web speed v 3 of 1700m/min, v4 (arrow).Also can be constituted as horizontal form device, vertical former or inclination former according to of the present invention pair of net former 1.
Fig. 2 is illustrated among Fig. 1 with what schematic side illustrated and is used for making fiber material web material 2, especially makes the thin Z of portion of the used two net formers of the machine of paper web or board web material.
Punching press is carried out 9 and is had two zones 25.1,25.2 that possess the bending of preferred different length L 25.1, L25.2, and the zone 25.1,25.2 of said bending always has bigger value on forming web traffic direction S (arrow).Therefore, the radius R 25.1 of first bending area 25.1 has 0.3 to 4m, and the radius R 25.2 of the preferably value in 1 to 2m scope, and second bending area 25.2 has in 1 to 5m scope, the value of preferred 3m.The length L 25.1 of first bending area 25.1 has 15 to 150mm, and the length L 25.2 of the preferably numerical value in 70 to 120mm scopes, and second bending area 25.2 has the value 90 to 350mm.In addition, the dehydrated mouth 18 that opens wide has size different, that preferably diminish on value along forming web traffic direction S (arrow).
In addition; In the run location of two laths that can flexibly compress 20.1,20.2 shown in it; On forming web traffic direction S (arrow), see, arrange that with respect to α ground, 3 one-tenth angles of the forming web that is reclining said angle α is at 30 ° to 170 °; Preferably at 65 ° to 155 °, especially in 80 ° to 140 ° scope.Simultaneously; Has following scraping angle β with respect to the forming web that is reclining 3 under each run location of lath 20.1,20.2 shown in it that can flexibly compress; This scraping angle β is in 25 ° to 70 °, preferably at 35 ° to 60 °, especially in 45 ° to 60 ° scope.
Fig. 3 illustrates exemplary chart " about the moulding of labial lamina opening ", and what the figure shows out is that the moulding about the labial lamina opening improves situation when using according to of the present invention pair of net former.This pair of net former is because at least one lath that punching press is carried out has improved moulding situation (" new " contrast " traditional ") significantly under the combination of less labial lamina opening and Substance.Because the water separation capability that punching press is carried out be for must improving through extending at a high speed, so when Substance hour, punching press carries out that to go up at least one lath even more important, this is because when speed is low, and the page forming process of said lath is end on punching press is carried out fully.
In a word, what should know is, to improving as follows like the two net formers that start said type, that is, as much as possible, preferably even fully avoids the defective of prior art through the present invention, and this pair net former can move with bigger human window.Based on the preparatory as far as possible flexibly dewatering period that is used to realize optimizing the moulding level, this pair net former especially also has very big Substance scope, velocity interval and also has the cutting angle scope.
Reference numerals list
1 pair of net former
2 fiber material web materials
3 forming webs
4 forming webs
5 breast rolls
6 breast rolls
7 outer regions
8 outer regions
9 crooked punching presses are carried out
The charging slit of 10 wedge shapes
11 head boxs
12 fibrous substance suspensions
13 fibrous substance suspension beams
14 pairs of network segments
15 moulding aspirators
The lining face of 16 bendings
17 lining panel bars
18 dehydrated mouths that open wide
19 laths
19.1 lath
19.2 lath
19.3 lath
19.4 lath
20.1 lath
20.2 lath
21 operating mechanisms
22 bidirectional-movement arrows
23.1 shaping area
23.2 shaping area
24.1 low pressure source
24.2 low pressure source
25.1 bending area
25.2 bending area
26 low pressure source
The B width
The selectable servo force of F (arrow)
The H horizontal line
L
25.1Length
L
25.2Length
P.3 beam touches a little
P.4 beam touches a little
Pu
23.1Low pressure
Pu
23.2Low pressure
Pu
26Low pressure
R
25.1Radius
R
25.2Radius
S forming web traffic direction (arrow)
V3 forming web speed (arrow)
V4 forming web speed (arrow)
The thin portion of Z
The α angle
The β angle of swiping
The γ angle
Claims (30)
1. two net formers (1); Be used to be used for making the machine of fiber material web material (2); Said pair of net former (1) has two rotating endless forming webs (3,4); These two forming webs (3,4) are gone up the operation process in the outer regions (7,8) of corresponding breast roll (5,6) respectively, and after this, said two forming webs (3,4) are at least when (9) are carried out in the punching press that arrives bending; Under the situation in the charging slit (10) that forms wedge shape, join; At least a fibrous substance suspension (12) that flows out as fibrous substance suspension beam (13) is directly admitted from head box (11) in said charging slit (10), on said two forming webs (3,4), constitute corresponding beam respectively simultaneously and touch point (P.3, P.4), and said two forming webs (3,4) subsequently at least the piecewise form two network segments (14); In the said pair of network segment (14); Said two forming webs (3,4) and the said at least a fibrous substance suspension (12) that is between said two forming webs (3,4) are directed carrying out (9) and at least one moulding aspirator (15) through said punching press, and said moulding aspirator (15) is arranged in said punching press indirectly or directly and carries out (9) at the back on forming web traffic direction (S), and said moulding aspirator (15) is arranged in carrying out on (9) opposed side with said punching press of the said pair of network segment (14); Wherein, Said punching press is carried out (9) and is had crooked lining face (16), and said lining face (16) has a plurality of lining panel bars of on forming web traffic direction (S), arranging successively (17), and has the dehydrated mouth (18) that opens wide that is between the said lining panel bar (17); And wherein; The said pair of network segment (14) with the opposed zone of said moulding aspirator (15) in be furnished with a plurality of laths (19.1 to 19.4), said a plurality of laths can flexibly be pressed to the card against forming web (4) on
It is characterized in that,
Be furnished with at least one lath (20.1,20.2) carrying out in (9) opposed zone of the said pair of network segment (14) with said punching press, said at least one lath (20.1,20.2) can flexibly be pressed to card against forming web (3) on, and
Said at least one lath that can flexibly compress (20.1,20.2) is at least in part to arrange with the said unlimited opposed mode of dehydrated mouth (18) of said punching press shoe (9).
2. pair net former according to claim 1 (1),
It is characterized in that,
Said fiber material web material (2) is paper web or board web material.
3. pair net former according to claim 1 (1),
It is characterized in that,
Carrying out in (9) opposed zone of the said pair of network segment (14) with said punching press, be furnished with a plurality of laths (20.1,20.2), these a plurality of laths (20.1,20.2) can flexibly be pressed to card against forming web (3) on, and
Said a plurality of lath that can flexibly compress (20.1,20.2) is at least in part to arrange with the opposed mode of dehydrated mouth (18) of opening wide of said punching press shoe (9).
4. pair net former according to claim 3 (1),
It is characterized in that,
Be furnished with two or three laths (20.1,20.2).
5. according to described pair of net former of one of claim 1-4 (1),
It is characterized in that,
The said lath that can flexibly compress (20.1,20.2) can move between resting position and run location by operating mechanism (21) at least; In said run location, said lath can be pressed onto through the servo force (F) that can select the card against forming web (3,4) on.
6. pair net former according to claim 5 (1),
It is characterized in that,
Said operating mechanism (21) is can be controlled/can conditioned.
7. pair net former according to claim 5 (1),
It is characterized in that,
The said lath that can flexibly compress (20.1,20.2) is seen on forming web traffic direction (S) in its run location, becomes the angle to arrange with the forming web that is reclining (3) (α), and said angle (α) is in 30 ° to 170 ° scope.
8. pair net former according to claim 7 (1),
It is characterized in that,
Said angle (α) is in 65 ° to 155 ° scope.
9. pair net former according to claim 7 (1),
It is characterized in that,
Said angle (α) is in 80 ° to 140 ° scope.
10. pair net former according to claim 5 (1),
It is characterized in that,
The said lath that can flexibly compress (20.1,20.2) has scraping angle (β) with respect to the forming web that is reclining (3) in its run location, said scraping angle (β) is in 25 ° to 70 ° scope.
11. according to claim 10 pair of net former (1),
It is characterized in that,
Said scraping angle (β) is in 35 ° to 60 ° scope.
12. according to claim 10 pair of net former (1),
It is characterized in that,
Said scraping angle (β) is in 45 ° to 60 ° scope.
13. according to any one described pair net former (1) among the claim 1-4,
It is characterized in that,
Said moulding aspirator (15) has at least two abilities with different low pressure (p
U23.1, p
U23.2) shaping area (23.1,23.2) that loads.
14. according to claim 13 pair of net former (1),
It is characterized in that,
Be arranged in said lath (19.1 to 19.4) in the zone of said moulding aspirator (15) only be arranged in said moulding aspirator (15) along in the zone of first shaping area (23.1) of forming web traffic direction (S).
15. according to any one described pair net former (1) among the claim 1-4,
It is characterized in that,
Said lath (20.1,20.2) has≤width (B) of 150mm.
16. according to claim 15 pair of net former (1),
It is characterized in that,
Said lath (20.1,20.2) has≤width (B) of 100mm.
17. according to claim 15 pair of net former (1),
It is characterized in that,
Said lath (20.1,20.2) has≤width (B) of 60mm.
18. according to claim 1 pair of net former (1),
It is characterized in that,
Said punching press is carried out (9) and is had two or more at least different length (L that possess
25.1, L
25.2) bending area (25.1,25.2), the radius (R of said bending area (25.1,25.2)
25.1, R
25.2) always have bigger value along forming web traffic direction (S).
19. according to claim 18 pair of net former (1),
It is characterized in that,
Length (the L of first bending area (25.1)
25.1) have the value in 15 to 150mm scopes, and the length (L of second bending area (25.2)
25.2) have a value in 90 to 350mm scopes.
20. according to claim 18 pair of net former (1),
It is characterized in that,
Length (the L of first bending area (25.1)
25.1) have the value in 70 to 120mm scopes, and the length (L of second bending area (25.2)
25.2) have a value in 90 to 350mm scopes.
21. according to each described pair of net former (1) among the claim 18-20,
It is characterized in that,
Radius (the R of first bending area (25.1)
25.1) have the value in 0.3 to 4m scope, and the radius (R of second bending area (25.2)
25.2) have a value in 1 to 5m scope.
22. according to claim 21 pair of net former (1),
It is characterized in that,
Radius (the R of first bending area (25.1)
25.1) have the value in 1 to 2m scope, and/or the radius (R of second bending area (25.2)
25.2) have the value of 3m.
23. according to any one described pair net former (1) among the claim 1-4,
It is characterized in that,
Said unlimited dehydrated mouth (18) is of different sizes.
24. according to claim 23 pair of net former (1),
It is characterized in that,
Said unlimited dehydrated mouth (18) has the size that on value, diminishes along forming web traffic direction (S).
25. according to any one described pair net former (1) among the claim 1-4,
It is characterized in that,
Said punching press is carried out (9) by at least one low pressure source (26), with the low pressure (p of>=0.5kPa
U26), with can be controlled/mode that can conditioned aspirates.
26. according to claim 25 pair of net former (1),
It is characterized in that,
(9) low pressure (p with>=2kPa is carried out in said punching press
U26) aspirate.
27. according to claim 25 pair of net former (1),
It is characterized in that,
(9) low pressure (p with>=5kPa is carried out in said punching press
U26) aspirate.
28. according to any one described pair net former (1) among the claim 1-4,
It is characterized in that,
The said pair of network segment (14) becomes 0 ° to 90 ° angle to be orientated with respect to horizontal line (H) (γ).
29. according to any one described pair net former (1) among the claim 1-4,
It is characterized in that,
Said two forming webs (3) have respectively >=the forming web speed (v3, v4) of 1500m/min.
30. according to any one described pair net former (1) among the claim 1-4,
It is characterized in that,
Said two forming webs (3) have respectively >=the forming web speed (v3, v4) of 1700m/min.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810040948 DE102008040948A1 (en) | 2008-08-01 | 2008-08-01 | Twin-wire former for a machine for producing a fibrous web |
| DE102008040948.0 | 2008-08-01 | ||
| PCT/EP2009/059644 WO2010012676A2 (en) | 2008-08-01 | 2009-07-27 | Twin-wire former for a machine for producing a web of fibrous material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202152434U true CN202152434U (en) | 2012-02-29 |
Family
ID=41461764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009901004017U Expired - Fee Related CN202152434U (en) | 2008-08-01 | 2009-07-27 | Twin-wire former for machine for producing web of fibrous material |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN202152434U (en) |
| DE (1) | DE102008040948A1 (en) |
| WO (1) | WO2010012676A2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008040688A1 (en) * | 2008-07-24 | 2010-01-28 | Voith Patent Gmbh | Method for optimizing the energy balance in forming units in machines for producing fibrous webs and forming unit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4014403C2 (en) | 1990-05-04 | 1994-03-10 | Escher Wyss Gmbh | Vertical former |
| DE4019884A1 (en) * | 1990-06-22 | 1992-01-09 | Voith Gmbh J M | PERFORMANCE SUPPLY SUPPORT FOR A SCREENING BELT |
| WO2004018768A1 (en) * | 2002-08-23 | 2004-03-04 | Metso Paper, Inc. | Forming of a paper or board web in a twin-wire former or in a twin-wire section of a former |
| DE10327425A1 (en) | 2003-06-18 | 2005-01-05 | Voith Paper Patent Gmbh | Twin-wire former of a machine for producing a fibrous web |
| MXPA06005684A (en) | 2003-12-22 | 2006-08-17 | Astenjohnson Inc | Gap type forming section for a two fabric paper making machine. |
| DE102004018329A1 (en) | 2004-04-13 | 2005-11-10 | Voith Paper Patent Gmbh | Twin-wire former of a machine for producing a fibrous web |
-
2008
- 2008-08-01 DE DE200810040948 patent/DE102008040948A1/en not_active Withdrawn
-
2009
- 2009-07-27 WO PCT/EP2009/059644 patent/WO2010012676A2/en active Application Filing
- 2009-07-27 CN CN2009901004017U patent/CN202152434U/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010012676A2 (en) | 2010-02-04 |
| DE102008040948A1 (en) | 2010-02-04 |
| WO2010012676A3 (en) | 2010-05-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20120727 |