CN101589194B - Method for dehydrating pulp, and dehydration machine for carrying out the method - Google Patents
Method for dehydrating pulp, and dehydration machine for carrying out the method Download PDFInfo
- Publication number
- CN101589194B CN101589194B CN200880003145.XA CN200880003145A CN101589194B CN 101589194 B CN101589194 B CN 101589194B CN 200880003145 A CN200880003145 A CN 200880003145A CN 101589194 B CN101589194 B CN 101589194B
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- CN
- China
- Prior art keywords
- screen cloth
- slewing rollers
- paper pulp
- water extraction
- lower screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000018044 dehydration Effects 0.000 title claims abstract description 22
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 22
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 9
- 239000004744 fabric Substances 0.000 claims description 106
- 229920001131 Pulp (paper) Polymers 0.000 claims description 54
- 238000003809 water extraction Methods 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000012216 screening Methods 0.000 claims description 14
- 238000005755 formation reaction Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 201000007094 prostatitis Diseases 0.000 claims 1
- 208000005156 Dehydration Diseases 0.000 abstract description 15
- 238000005452 bending Methods 0.000 abstract 2
- 238000000926 separation method Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
- D21F1/80—Pulp catching, de-watering, or recovering; Re-use of pulp-water using endless screening belts
-
- 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
Abstract
The invention relates to a method for dehydrating pulp (2) in a molder (3), in which the pulp (2) deposited by a headbox (7) onto a lower screen (4) is guided over a bending roll (8) between the lowerscreen (4) and an upper screen (5),with formation of a double screen area (6) in at least some places. The method according to the invention is characterized in that the pulp (2) is predehydrated by means of the lower screen (4) in a predehydration area (9) arranged in front of the double screen area (6) in the direction of movement (S) of the lower screen (4), and in that the pulp (2) is furtherdehydrated in the double screen area (6), which has an additional bending roll (13), by means of screen stresses (T.4, T.5) exerted by the two screens (4, 5). The invention further relates to a dehyd ration machine (1) for pulp (2), which is suitable for carrying out the method according to the invention.
Description
Technical field
The present invention relates to the method that a kind of paper pulp dewaters in mould (Former), be applied to paper pulp on the lower screen cloth from loader, in mould, guide by slewing rollers between the lower screen cloth in the two screen cloth districts of at least part of formation and the upper screen cloth.
In addition, the invention still further relates to a kind of Water Extraction Machinery for paper pulp, comprise mould, this mould has lower screen cloth and upper screen cloth, the two screen cloth districts of their at least part of formations, and guide by slewing rollers together with being in the paper pulp that is applied on the lower screen cloth by loader between them.This Water Extraction Machinery is particularly suitable for implementing described method.
Background technology
For example by the known this Water Extraction Machinery of International Application No. WO 00/31336A1.The relatively upstream in short two screen clothes district at this Water Extraction Machinery arranges the cavity that a wedge shape that is made of two screen clothes restrains, and loader will have the paper pulp of initial aridity and insert wherein.These two screen clothes that extend through described cavity are fixed on the chamber unit, and they respectively contain at least one chamber of accepting of accepting screening water.
That based on chamber unit limited water separation capability separately, Water Extraction Machinery only can be with limited speed of production, that is the operation of screen cloth speed in its shortcoming of Water Extraction Machinery shown in Fig. 2 of above-mentioned document.Screen cloth speed is in the 200m/min scope usually.Because the low speed of production of Water Extraction Machinery, in the situation of general machine-wide, its output is corresponding less too.
In addition because the limited water separation capability of chamber unit, the still very well draining of paper pulp in the end of mould so must take expensive measure in the zone that is in the mould downstream of Water Extraction Machinery, makes paper pulp finally still can be dried to acceptable degree.And the lower aridity of paper pulp also can reduce the wet strength of paper pulp certainly, thereby makes paper pulp be difficult to technically operation.
Summary of the invention
Therefore the technical problem to be solved in the present invention is to improve method and the Water Extraction Machinery that this paper starts described type, overcomes the shortcoming of prior art, can high energy efficiency and reach at low cost the higher aridity of paper pulp.
Above-mentioned technical problem is solved like this according to the present invention in this paper starts the method for described type, that is, paper pulp is in a traffic direction along lower screen cloth is laid in the predrainage district of upstream, two screen cloth district, by the lower screen cloth predrainage; And paper pulp further dewaters by the screen cloth stress that is applied by two screen clothes in having two screen clothes district of another slewing rollers.
Can ideally solve technical problem of the present invention in this way.
According to method of the present invention, based on better to paper pulp, that is strengthen dewatering, so even in the higher situation of screen cloth speed, still can reach the higher aridity of paper pulp.Strengthen dewatering is divided into the different stages by it on the one hand, and the mode by dehydration realizes on the other hand.Based on the dehydration of present machinery or the screen cloth stress that pneumatically applies, especially than much soft based on the dehydration that adds pressure pulse.Therefore when using according to method of the present invention, can produce more substantial paper pulp with better aridity and Geng Jia characteristic.
In addition, when using according to method of the present invention, can be basically, preferably even fully phase out " high energy consumption " dewatering elements.Therefore compare with method of dewatering pulp in the known mould, it is about 25% that required driving power reduces, and the vacuum that needs to set up reduces about 40%.
By the preferred form of implementation regulation of the first, for paper pulp further dewaters, lower screen cloth produces lower screen cloth stress and is at least 20kN/m, preferably is at least 25kN/m, especially is at least 30kN/m; And for paper pulp further dewaters, upper screen cloth produces upper screen cloth stress and is at least 6kN/m, preferably is at least 8kN/m, especially is at least 10kN/m.The described screen cloth range of stress has been improved the pulp dryer degree significantly, and they can not only be realized technically but also in mechanical structure, need not more to pay.
In addition, weight per unit area be 600 to 1200g/m2 and/or denseness be 1.2 to 2.2% paper pulp, also can be preferably at screen cloth speed 200m/min at least, preferably 250m/min at least dewaters in the situation of 300m/min especially at least.Therefore with nowadays in mould method of dewatering pulp compare, in general machine-wide situation, described screen cloth speed allows to improve output and reaches 25%, meanwhile has good equally aridity and less driving power at least and reduces the vacuum demand.So the feature according to method of the present invention also is lower energy consumption.
In view of economical and soft initial dehydration, advantageously paper pulp is less than or equal to 0.1bar in vacuum, preferably is less than or equal to the predrainage district dehydration of 0.8bar.Significantly reduce thus the vacuum that needs foundation.
Above-mentioned technical problem is solved in this paper starts the Water Extraction Machinery of described type like this,, in the upstream in two screen clothes district, the predrainage district that is made of one section lower screen cloth is set along the traffic direction of lower screen cloth that is; Slewing rollers have closed roller shell, and the outside is provided with the acquisition means that holds of the screening water that throws away for admittance; And, in the downstream of slewing rollers, the slewing rollers of two screen clothes of another guiding being set along the traffic direction of lower screen cloth, it has closed roller shell, and downside is provided with the acquisition means that holds of the screening water that throws away for admittance.
Therefore compare with known prior art, mentioned according to advantage of the present invention.Described Water Extraction Machinery can reach the dehydration stronger to paper pulp, need not expensive interior fittings and increases the space.In addition, these two slewing rollers can be made more easily, have avoided by the effect contingent knotty problem of scraping thereon.
When using according to method of the present invention, can be basically, preferably even fully phase out " high energy consumption " dewatering elements.Therefore compare with known Water Extraction Machinery, it is about 25% that required driving power reduces, and the vacuum that needs to set up reduces about 40%.
By this design of Water Extraction Machinery, compare with known form of implementation, can discharge a large amount of especially screening water also thereby reach higher aridity from paper pulp.Because adopt the closed type roller shell, so can not pass the screen cloth that was reclining at that time towards the direction of roller shell at the screening water that twines separately paper pulp in the district.Based on screen cloth stress, screening water flows along another direction in this zone, outwards that is to say and flows, and get rid of holding the acquisition means separately from the screen cloth that was at that time the outside under centrifugal action.Significantly improve thus the pulp dryer degree.
In order to provide enough dehydration length to reach the higher aridity of paper pulp, the roller footpath that these two slewing rollers preferably respectively have is in 1200 to 1750mm scope, preferably in 1450 to 1600mm scope.
In addition advantageously, these two screen clothes preferably twine the first slewing rollers with the first angle of contact in 110 ° to 125 ° scopes with at 90 ° to 135 °.This increases dehydration length and thereby raising pulp dryer degree again in very mildly dehydration.
In order just to be provided at technical favourable dehydration conditions at the beginning, the predrainage district level that is consisted of by one section lower screen cloth or horizontal orientation substantially.Can affect fairly simplely and control/adjust the dehydration characteristic of paper pulp in the situation of this external this design.
In view of reaching a kind of short as far as possible Water Extraction Machinery and avoiding paper pulp to get damp, advantageously, these two screen clothes preferably leave the first slewing rollers at half roller place of bottom.In this case, see along the lower screen cloth traffic direction that these two screen clothes in an advantageous manner first quartile in the bottom leave the first slewing rollers, and half roller is gone on the second slewing rollers on top.
Also advantageously, these two screen clothes are preferably with at 125 ° to 180 °, and preferably the second angle of contact in 145 ° to 165 ° scopes twines the second slewing rollers.This increases dehydration length and thereby raising pulp dryer degree again when the utmost point mildly dewaters.
In addition, these two screen clothes preferably leave the second slewing rollers at half roller place of bottom.In this case, see along the lower screen cloth traffic direction that these two screen clothes preferably leave the second slewing rollers jointly at the first quartile of bottom in an advantageous manner.This again is conducive to reach a kind of short as far as possible Water Extraction Machinery and is avoided paper pulp to get damp.
In order to satisfy needed water separation capability based on the screen cloth stress that applies, lower screen cloth preferably has at least 20kN/m of lower screen cloth stress, 25kN/m at least preferably, especially at least 30kN/m, and upper screen cloth preferably has at least 6kN/m of upper screen cloth stress, preferably at least 8kN/m, especially at least 10kN/m.
Description of drawings
By referring in the explanation of accompanying drawing to preferred embodiment, provide other features and advantages of the present invention.
A unique width of cloth figure schematically shows the side view by a kind of form of implementation of the Water Extraction Machinery 1 that is used for paper pulp 2 that the present invention includes mould 3.
The specific embodiment
Mould 3 has lower screen cloth 4 and upper screen cloth 5, the two screen cloth districts 6 of their at least part of formations.In this case, they are guided by slewing rollers 8 together with being in the paper pulp 2 that is applied on the lower screen cloth 4 by the loader 7 that only schematically shows between them.
Along the upstream of screen cloth traffic direction S (arrow) in two screen clothes district 6, the predrainage district 9 that is made of one section lower screen cloth 4 is set.This level or substantially the length L .9 that has of the predrainage district 9 of horizontal orientation in 5000 to 8000mm scopes, and at downside, that is lower screen cloth 4 and placed on it 's paper pulp 2, be provided with to guiding a plurality of known dewatering elements.These dewatering elements represent that with Reference numeral 10 V.10 the vacuum that they produce respectively be less than or equal to 0.1bar, preferably are less than or equal to 0.8bar.Lower screen cloth 4 is mobile around 11 guidings of nipple roller before it enters predrainage district 9, and loader 7 is applied to paper pulp 2 above the lower screen cloth 4 in its zone.
M.8 slewing rollers 8 have closed roller shell, and be provided with the screening water (arrow) that throws away for admittance in the outside hold acquisition means 12.Hold acquisition means 12 and extend an amount, so that can all hold all screening water (arrow) that throw away based on centrifugal action of collection, though yet and can process for example will sieve water from mould 3 discharges by the known screening tank of not shown professional among the figure reliably.
In addition, roller that slewing rollers 8 have footpath D.8 in 1200 to 1750mm scope, preferably in 1450 to 1600mm scope, and, with at 90 ° to 135 °, preferably A.8 the first angle of contact in 110 ° to 125 ° scopes twines by these two screen clothes 4,5.Therefore these two screen clothes 4,5 half rollers in the bottom, preferably Q.8 the first quartile in the bottom leaves the first slewing rollers 8.
Along the traffic direction S (arrow) of lower screen cloth 4 downstream at slewing rollers 8, be provided with these two screen clothes 4 of guiding, another slewing rollers 13 of 5, it still has closed roller shell M.13 and downside is provided with the screening water (arrow) that throws away for admittance holds acquisition means 14.This holds acquisition means 14 and also extends an amount, so that can all hold all screening water (arrow) that throw away based on centrifugal action of collection, though yet and can process for example will sieve water from mould 3 discharges by the known screening tank of not shown professional among the figure reliably.
The roller footpath that slewing rollers 13 have is in 1200 to 1750mm scope, preferably in 1450 to 1600mm scope.These two screen clothes 4,5 are gone on the second slewing rollers 13 at half roller on top, and with at 125 ° to 180 °, preferably A.13 the second angle of contact in 145 ° to 165 ° scopes twines the second slewing rollers 13.Follow these two screen clothes 4,5 half rollers in the bottom, preferably Q.13 the first quartile in the bottom preferably leaves the second slewing rollers 13 jointly.Then these two screen clothes 4,5 are by 15 guidings of separation suction nozzle, and they separate based on the geometry that has within separating the zone of suction nozzle 15, and thereby the two screen cloth districts 6 of termination.After these two screen clothes 4,5 separated, paper pulp 2 was in companion movement on the lower screen cloth 4 and in the unshowned press portion of later transferring in known manner Water Extraction Machinery 1.
The equipment 1 that represents in a unique width of cloth figure is specially adapted to implement the method for paper pulp 2 dehydrations in mould 3 according to the present invention, be applied to paper pulp 2 on the lower screen cloth 4 by loader 7, in mould 3, guide by slewing rollers 8 between the lower screen cloth 4 in the two screen cloth districts 6 of at least part of formation and the upper screen cloth 5, wherein, paper pulp 2 is in a traffic direction S (arrow) along lower screen cloth 4 is located at the predrainage district 9 of 6 upstreams, two screen cloth district, by lower screen cloth 4 predrainages, and, paper pulp 2 is in having two screen clothes district 6 of another slewing rollers 13, by by two screen clothes 4, the 5 screen cloth stress that apply are (four-headed arrow) T.4, T.5 (four-headed arrow) further dehydration.
Have weight per unit area F and be 600 to 1200g/m2 and/or denseness K be 1.2 to 2.2% paper pulp 2, thereby can be at screen cloth speed v (arrow) 200m/min at least, preferably 250m/min at least dewaters in the situation of 300m/min especially at least.
Can affirm in a word, adopt the present invention not only can improve this paper and start the method for described type but also improved such Water Extraction Machinery, overcome the shortcoming of prior art, and can be effectively and improve economically the pulp dryer degree.
List of numerals
1 Water Extraction Machinery
2 paper pulp
3 moulds
4 lower screen cloths
5 upper screen cloths
6 pairs of screen cloth districts
7 loaders
8 slewing rollers
9 predrainage districts
10 dewatering elements
11 nipple rollers
12 hold acquisition means
13 slewing rollers
14 hold acquisition means
15 separate suction nozzle
A.8 the first angle of contact
A.13 the second angle of contact
D.8 roller directly
D.13 roller directly
The F weight per unit area
The K denseness
L.9 length
M.8 roller shell
M.13 roller shell
Q.8 bottom first quartile
Q.13 bottom first quartile
S screen cloth traffic direction (arrow)
T.4 lower screen cloth stress (four-headed arrow)
T.5 upper screen cloth stress (four-headed arrow)
V.10 vacuum
V screen cloth speed
Claims (19)
- One kind in mould (3) to the method for paper pulp (2) dehydration, be applied to paper pulp (2) on the lower screen cloth (4) by loader (7), in mould (3), guide by slewing rollers (8) between the lower screen cloth (4) in the two screen cloth districts (6) of at least part of formation and the upper screen cloth (5), it is characterized by: described paper pulp (2) is in a traffic direction along lower screen cloth (4) (S) is laid in the predrainage district (9) of upstream, described pair of screen cloth district (6), by lower screen cloth (4) predrainage; And paper pulp (2) is in having two screen clothes district (6) of another slewing rollers (13), by further dehydration of the screen cloth stress (T.4, T.5) that is applied by two screen clothes (4,5), in order to make further dehydration of paper pulp (2), the lower screen cloth stress (T.4) that lower screen cloth (4) produces is at least 20kN/m; And in order to make further dehydration of paper pulp (2), the upper screen cloth stress (T.5) that upper screen cloth (5) produces is at least 8kN/m; Described two screen clothes (4,5) twine the first slewing rollers (8) with the first angle of contact (A.8) in 90 ° to 135 ° scopes; Described two screen clothes (4,5) twine the second slewing rollers (13) with the second angle of contact (A.13) in 125 ° to 180 ° scopes.
- 2. in accordance with the method for claim 1, it is characterized by, weight per unit area (F) be 600 to 1200g/m2 and/or denseness (K) be 1.2 to 2.2% paper pulp (2), be at least in screen cloth speed (v) in the situation of 200m/min and dewater.
- 3. in accordance with the method for claim 2, it is characterized by, weight per unit area (F) be 600 to 1200g/m2 and/or denseness (K) be 1.2 to 2.2% paper pulp (2), be at least in screen cloth speed (v) in the situation of 250m/min and dewater.
- 4. in accordance with the method for claim 3, it is characterized by, weight per unit area (F) be 600 to 1200g/m2 and/or denseness (K) be 1.2 to 2.2% paper pulp (2), be at least in screen cloth speed (v) in the situation of 300m/min and dewater.
- 5. according to the described method of one of all claims in prostatitis, it is characterized by, paper pulp (2) dewaters within vacuum (V.10) is less than or equal to the zone in predrainage district (9) of 0.8bar.
- 6. in accordance with the method for claim 5, it is characterized by, paper pulp (2) dewaters within vacuum (V.10) is less than or equal to the zone in predrainage district (9) of 0.1bar.
- 7. Water Extraction Machinery (1) that is used for paper pulp (2), comprise mould (3), this mould has lower screen cloth (4) and upper screen cloth (5), the two screen cloth districts (6) of their at least part of formations, and be applied to paper pulp (2) on the lower screen cloth (4) together by slewing rollers (8) guiding with being between them by loader (7), it is characterized by: in upstream, two screen clothes district (6), the predrainage district (9) by one section formation of lower screen cloth (4) is set along the traffic direction (S) of lower screen cloth (4); Slewing rollers (8) have closed roller shell (M.8), and the outside be provided with the screening water that throws away for admittance hold acquisition means (12); And along the traffic direction (S) of lower screen cloth (4) downstream in slewing rollers (8), the slewing rollers (13) of another two screen clothes of guiding (4,5) are set, these slewing rollers (13) have closed roller shell (M.13), and downside be provided with the screening water that throws away for admittance hold acquisition means (14), in order to make further dehydration of paper pulp (2), the lower screen cloth stress (T.4) that lower screen cloth (4) produces is at least 20kN/m; And in order to make further dehydration of paper pulp (2), the upper screen cloth stress (T.5) that upper screen cloth (5) produces is at least 8kN/m; Described two screen clothes (4,5) twine the first slewing rollers (8) with the first angle of contact (A.8) in 90 ° to 135 ° scopes; Described two screen clothes (4,5) twine the second slewing rollers (13) with the second angle of contact (A.13) in 125 ° to 180 ° scopes.
- 8. according to Water Extraction Machinery claimed in claim 7 (1), it is characterized by, the roller footpath (D.8, D.13) that described two slewing rollers (8,13) respectively have is in 1200 to 1750mm scope.
- 9. according to Water Extraction Machinery claimed in claim 8 (1), it is characterized by, the roller footpath (D.8, D.13) that described two slewing rollers (8,13) respectively have is in 1450 to 1600mm scope.
- 10. according to claim 7 or 8 described Water Extraction Machinerys (1), it is characterized by, the predrainage district (9) of described one section formation by lower screen cloth (4) is flatly directed.
- 11. according to claim 7 or 8 described Water Extraction Machinerys (1), it is characterized by, described two screen clothes (4,5) leave the first slewing rollers (8) at half roller place of bottom.
- 12. according to the described Water Extraction Machinery of claim 11 (1), it is characterized by, see that along the traffic direction (S) of lower screen cloth (4) described two screen clothes (4,5) leave the first slewing rollers (8) at the first quartile (Q.8) of bottom.
- 13. according to claim 7 or 8 described Water Extraction Machinerys (1), it is characterized by, described two screen clothes (4,5) are gone on the second slewing rollers (13) at the half roller place on top.
- 14. according to claim 7 or 8 described Water Extraction Machinerys (1), it is characterized by, these two screen clothes (4,5) leave the second slewing rollers (13) at half roller place of bottom.
- 15. according to claim 7 or 8 described Water Extraction Machinerys (1), it is characterized by, traffic direction (S) along lower screen cloth (4) sees that described two screen clothes (4,5) leave the second slewing rollers (13) jointly at the first quartile (Q.13) of bottom.
- 16. according to Water Extraction Machinery claimed in claim 7 (1), it is characterized by, described lower screen cloth (4) has lower screen cloth stress (T.4) and is at least 25kN/m.
- 17. according to the described Water Extraction Machinery of claim 16 (1), it is characterized by, described lower screen cloth (4) has lower screen cloth stress (T.4) and is at least 30kN/m.
- 18. according to Water Extraction Machinery claimed in claim 7 (1), it is characterized by, described upper screen cloth (5) has upper screen cloth stress (T.5) and is at least 10kN/m.
- 19. according to the described Water Extraction Machinery of claim 18 (1), it is characterized by, described upper screen cloth (5) has upper screen cloth stress (T.5) and is at least 12kN/m.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710000036 DE102007000036A1 (en) | 2007-01-25 | 2007-01-25 | Process for dewatering pulp and dewatering machine for carrying out the process |
| DE102007000036.9 | 2007-01-25 | ||
| PCT/EP2008/050375 WO2008090052A1 (en) | 2007-01-25 | 2008-01-15 | Method for dehydrating pulp, and dehydration machine for carrying out the method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101589194A CN101589194A (en) | 2009-11-25 |
| CN101589194B true CN101589194B (en) | 2013-04-24 |
Family
ID=39315099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880003145.XA Expired - Fee Related CN101589194B (en) | 2007-01-25 | 2008-01-15 | Method for dehydrating pulp, and dehydration machine for carrying out the method |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2126202B1 (en) |
| CN (1) | CN101589194B (en) |
| BR (1) | BRPI0806085A2 (en) |
| DE (1) | DE102007000036A1 (en) |
| WO (1) | WO2008090052A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2447218C2 (en) * | 2010-06-16 | 2012-04-10 | Анатолий Кузьмич Соломаха | Compact device for production of sanitary-hygiene types of paper |
| DE102010041730A1 (en) | 2010-09-30 | 2012-04-05 | Voith Patent Gmbh | Machine for the dewatering of pulp |
| DE102011003304A1 (en) * | 2011-01-28 | 2012-08-02 | Voith Patent Gmbh | Pulp dewatering cover for a pulp dewatering machine |
| WO2013143713A1 (en) * | 2012-03-28 | 2013-10-03 | Voith Patent Gmbh | Machine for dewatering pulp |
| DE102012204936A1 (en) | 2012-03-28 | 2013-10-02 | Voith Patent Gmbh | Method for dewatering pulp in former of dewatering machine, involves carrying-out one of deflection rollers with open roll shell and with suction- or discharge zone, where pulp is evacuated or blown in area of suction- or discharge zone |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3414087A1 (en) * | 1983-04-15 | 1984-10-18 | Rauma-Repola Oy, Pori | Process and apparatus for the dewatering of a fibre material |
| CN2272028Y (en) * | 1996-08-01 | 1998-01-07 | 四川省资中县轻工机械厂 | Double-screen filter-press vacuum pulp cleaner |
| CN2394944Y (en) * | 1999-09-21 | 2000-09-06 | 李保民 | Long net double roll pulp extruder |
| CN2557570Y (en) * | 2002-07-07 | 2003-06-25 | 李风宁 | Web clamping formation device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT376722B (en) * | 1983-02-09 | 1984-12-27 | Andritz Ag Maschf | DRAINAGE MACHINE FOR CELLULAR OD. DGL. FIBER MATERIAL |
| IT1283761B1 (en) * | 1996-04-22 | 1998-04-30 | Sernagiotto Spa | DOUBLE BELT PRESS WITH HIGH DEHYDRATION CAPACITY |
| US5783045A (en) * | 1996-05-06 | 1998-07-21 | Beloit Technologies, Inc. | Pulp and linerboard former with improved dewatering |
| FI982540A (en) | 1998-11-24 | 2000-05-25 | Valmet Corp | Process for drying cellulose |
| DE19950805A1 (en) * | 1999-10-21 | 2001-04-26 | Voith Paper Patent Gmbh | Former |
-
2007
- 2007-01-25 DE DE200710000036 patent/DE102007000036A1/en not_active Withdrawn
-
2008
- 2008-01-15 WO PCT/EP2008/050375 patent/WO2008090052A1/en active Application Filing
- 2008-01-15 EP EP08701485.8A patent/EP2126202B1/en not_active Not-in-force
- 2008-01-15 BR BRPI0806085-1A patent/BRPI0806085A2/en not_active Application Discontinuation
- 2008-01-15 CN CN200880003145.XA patent/CN101589194B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3414087A1 (en) * | 1983-04-15 | 1984-10-18 | Rauma-Repola Oy, Pori | Process and apparatus for the dewatering of a fibre material |
| CN2272028Y (en) * | 1996-08-01 | 1998-01-07 | 四川省资中县轻工机械厂 | Double-screen filter-press vacuum pulp cleaner |
| CN2394944Y (en) * | 1999-09-21 | 2000-09-06 | 李保民 | Long net double roll pulp extruder |
| CN2557570Y (en) * | 2002-07-07 | 2003-06-25 | 李风宁 | Web clamping formation device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2126202B1 (en) | 2015-10-07 |
| DE102007000036A1 (en) | 2008-07-31 |
| CN101589194A (en) | 2009-11-25 |
| EP2126202A1 (en) | 2009-12-02 |
| WO2008090052A1 (en) | 2008-07-31 |
| BRPI0806085A2 (en) | 2011-08-30 |
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