CN202830627U - Mesh portion gravity dewatering system for multi-cylinder long mesh paper machine - Google Patents
Mesh portion gravity dewatering system for multi-cylinder long mesh paper machine Download PDFInfo
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- CN202830627U CN202830627U CN 201220459777 CN201220459777U CN202830627U CN 202830627 U CN202830627 U CN 202830627U CN 201220459777 CN201220459777 CN 201220459777 CN 201220459777 U CN201220459777 U CN 201220459777U CN 202830627 U CN202830627 U CN 202830627U
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- wet end
- paper machine
- gravity dehydration
- dehydration system
- end gravity
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- 230000005484 gravity Effects 0.000 title claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000007790 scraping Methods 0.000 claims abstract description 26
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 238000006297 dehydration reaction Methods 0.000 claims description 80
- 230000018044 dehydration Effects 0.000 claims description 78
- 239000004744 fabric Substances 0.000 claims description 12
- 229920001131 Pulp (paper) Polymers 0.000 abstract description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000000945 filler Substances 0.000 description 20
- 235000012241 calcium silicate Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 239000000378 calcium silicate Substances 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The utility model discloses a mesh portion gravity dewatering system for a multi-cylinder long mesh paper machine, and belongs to the field of papermaking equipment accessories. The mesh portion gravity dewatering system is suitable of being used on paper making equipment for highly filled paper production. A mesh table of the mesh portion gravity dewatering system passes through a forming plate, an anhydrous leg water scraping element, and a water-borne leg water scraping element in sequence, and the distance from a mesh touch point of flow slurry box weir crest slurry flow to the tail end of the last set of water scraping plate is increased by 10%-50% compared with that of a traditional multi-cylinder long mesh paper machine with the same width and speed. The mesh portion gravity dewatering system for the multi-cylinder long mesh paper machine can well enable the highly filled paper pulp to be dewatered naturally and evenly formed with paper pages, has the advantages of being long in dewatering time, high in dewatering efficiency, and good in dewatering quality, and solves the problems of a traditional paper machine gravity dewatering system in the process of production of highly filled paper.
Description
Technical field
The utility model discloses a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, belong to paper industry production equipment accessory field, be suitable for being used on the paper making equipment of producing high filler paper, be particularly suitable for being used in on the paper production equipment of active calcium silicate as papermaking filler.
Background technology
Paper-making industry is that China Today (also being the world) consumes also one of large industry of the large and actual demand amount of Environmental costs, although Internet technology is advanced by leaps and bounds, but along with the develop rapidly of China's economic and global economy continue advance, China and the world do not change the aggregate demand of paper product, also slightly increase, demand to paper product, mean the demand to paper making pulps, and the forest growth rate of preparation paper making pulps is far below the requirement consumes speed of paper making pulps, under the constant prerequisite of paper products total output, how reducing the paper making pulps consumption, and can produce high-quality paper, has been that one global problem pendulum is in face of the mankind.
Untie early this road difficult problem, significant to China.At present, the most of dependence on import of China's paper making pulps, the import pulp amount has leapt to the first in the world, from strategic angle, the papermaking of China " with slurry " is in fact the use of " limited ", if world's wood pulp supply chain shortage in a day is arranged, China will be in the face of fearful " with slurry " exhausted problem, can directly threaten national security stable, the forest reserves of China are very limited, be difficult to the own paper product of reply and supply with, the China that does not analyze first today here is one of paper product state in short supply of maximum in the world still.
Based on above-mentioned, people are studying always and are seeking high filler paper production technology and production equipment thereof, untie early an above-mentioned difficult problem with it.
Paper machine is the equipment of uniting of paper making, and traditional paper machine mainly contains three types: long mesh paper making machine, cylinder mould machine, foudrinier.Wherein long mesh paper making machine is a kind of widely used paper machine type, and most paper grades of can manufacturing paper with pulp is the mainstream model of paper machine.
As shown in Figure 6, the gravity dehydration system on traditional multi-cylinder long mesh paper machine by forming board 2, anhydrous leg scrape water element 3, band water leg is scraped water element 4 and is formed, these dewatering elements sequentially are installed on the forming table 1;
As shown in Figure 1, the structure of forming board 2 is: article one forming board lath 6 and many forming board laths 5 are parallel to each other and are fixed on forming board 2 tops, are close to forming table 1, and width of sheet all is D ', and forming board 2 regional entire length are A ';
As shown in Figure 3, the structure that anhydrous leg is scraped water element 3 is: many Wiper blades 7 that are parallel to each other are fixed on anhydrous leg and scrape water element 3 tops, and Wiper blade 7 is close to forming table 1; Low speed paper machine Wiper blade 7 is 0 ° with forming table 1 setting angle, and high-speed paper machine Wiper blade 7 is 3-5 ° with forming table 1 setting angle, and what Fig. 3 showed is the 0 angle structure that traditional low speed paper machine is installed;
As shown in Figure 5, the structure of scraping water element 4 with the water leg is: many Wiper blades 7 that are parallel to each other are fixed on band water leg and scrape water element 4 tops, and Wiper blade 7 is close to forming table 1; Low speed paper machine Wiper blade 7 is 0 ° with forming table 1 setting angle, and high-speed paper machine Wiper blade 7 is 3-5 ° with forming table 1 setting angle, and what Fig. 5 showed is the 0 angle structure that traditional low speed paper machine is installed;
The wet end gravity dehydration system of above-mentioned traditional long mesh paper making machine can not satisfy the gravity dehydration requirement of high filler (as: calcium silicates) paper, when high filler paper is produced under above-mentioned wet end gravity dehydration system, has following problem:
1, the dewatering of pulp degree is not enough, and fibre forming is poor.
2, the forming board structure of traditional fourdrinier wire wire multi-cylinder paper machine wet end gravity dehydration system is suitable for the slowly dehydration and being shaped of common paper pulp, but when selecting high filler pulp production, because natural-dehydration speed is slow, the quantity of forming board and gap arrangement have hindered the dehydration of paper pulp, can not effectively promote the ordered arrangement of paper pulp fiber and filler, the paper sheet formation weak effect.
3, the Wiper blade quantity of tradition fourdrinier wire wire multi-cylinder paper machine wet end gravity dehydration system is few, upper surface and the forming net of Wiper blade have a certain degree, scrape off moisture under the forming net in its leading edge, produce a vertical pressure pulse at trailing edge, produce simultaneously certain vacuum force, for traditional paper pulp provides mild dehydration, but when selecting high filler paper pulp, the length in Wiper blade zone and the number of Wiper blade can not satisfy the requirement of high filler gravity dehydration, its pulse high filler dewatering of pulp relative to vacuum force, also can't satisfy its requirement, therefore high filler paper pulp is relatively poor at Wiper blade zone dehydrating effect, be easy to cause wet web moisture too high, the page shape is defeated and dispersed.
How to address the above problem, be one of people's important step of successfully developing high loaded sheet machine equipment.
Summary of the invention
The purpose of this utility model provides a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, and it can make high filler paper pulp natural-dehydration and page evenly be shaped well, has that dewatering time is long, dewatering efficiency is high, measured characteristics of dehydration matter.
The purpose of this utility model is achieved in that a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it has forming board 2, anhydrous leg to scrape water element 3, band water leg is scraped water element 4, order is installed on the forming table 1, it scrapes the distance of water element end to last cover from head box crest of weir slurry stream jet nit point, the wet end gravity dehydration zone length of traditional multi-cylinder long mesh paper machine of relatively equal fabric width and the speed of a motor vehicle increases 10%-50%;
Wherein, traditional fourdrinier wire wire multi-cylinder paper machine forming board lath quantity of the relatively equal fabric width of the forming board lath quantity on the forming board and the speed of a motor vehicle increases 10%-50%, the length A in traditional fourdrinier wire wire multi-cylinder paper machine forming board zone of the relatively equal fabric width of the length A in forming board zone and the speed of a motor vehicle ' increase 10%-50%;
The 5-10 bar forming board lath that is parallel to each other is fixed on forming board top, and article one forming board width of sheet D of close head box is between 150 millimeters-300 millimeters;
The width of other forming board laths equates, between 50 millimeters-80 millimeters;
The quantity of scraping the water element in traditional fourdrinier wire wire multi-cylinder paper machine of the relatively equal fabric width of the quantity of scraping the water element in the wet end gravity dehydration system and the speed of a motor vehicle increases 10%-50%, scrapes the relative conventional paper machines of length in water element arrangements zone and scrapes water element arrangements zone length increase 10%-50%;
The water element of scraping in the wet end gravity dehydration system has 7-12, and wherein, 2-4 is that band water leg is scraped the water element, and other are that anhydrous leg is scraped the water element;
Wiper blade and the forming table setting angle of scraping the water element in the wet end gravity dehydration system are 0 °-7 °;
Wiper blade and the better setting angle of forming table of scraping the water element in the wet end gravity dehydration system are less than 3 ° greater than 0 °;
Wiper blade and the better setting angle of forming table of scraping the water element in the wet end gravity dehydration system can also be less than or equal to 7 ° greater than 5 °.
The utility model has the advantages that: because the dehydration of gravity dehydration entire system described in the utility model zone lengthens, the change of forming board structure, Wiper blade structure and quantity, solved the deficiency that conventional paper machines gravity dehydration system exists, strengthened paper pulp and be shaped and good dehydration at the Quick uniform of gravity dehydration system realm;
Because what forming board adopted in the gravity dehydration described in the utility model system optimizes structure, so that the forming board zone is in the situation that the paper sheet formation turbulent flow that do not exert an influence, dewatering time prolongs, the water separation capability of wet pulp significantly increases, the fiber rapid subsidence is arranged as orderly l Water Paper page or leaf in fast dewatering, solved traditional gravity dehydration system when high filler paper pulp is produced, dewatering of pulp speed is slow in the forming board zone, the problem that forming effect is poor;
Owing to scraping optimizing structure that the water element adopts in the gravity dehydration described in the utility model system, produce the micro-turbulence pulse that strengthens so that scrape the water element area, can significantly increase page in this regional water separation capability and guarantee that paper pulp is quick, uniformly shaping, solved traditional gravity dehydration system when selecting high filler paper pulp to produce, dewatering speed is slow in the Wiper blade zone, and paper pulp is defeated and dispersed, poor problem is shaped;
Because the improvement of gravity dehydration system architecture described in the utility model, greatly improved the performance that multi-cylinder long mesh paper machine is produced high filler (as: calcium silicates) paper pulp, part has solved conventional paper machines and has been not suitable for problem that high filler paper pulp produced, improved high filler paper pulp retention in process of production, reduce the filler loss, reduced cost;
Because gravity dehydration system optimization described in the utility model is structural design cleverly, compare with traditional gravity dehydration system, it namely can be used on the production equipment of traditional culture paper using, can be used in again and add on all types of paper production equipment of having filled out such as the active calcium silicate filler, solve traditional gravity dehydration system and only be suitable for common paper pulp is produced, can not be suitable for well the problem that high filler paper pulp is produced.
Description of drawings
Fig. 1 is forming board structural representation in the traditional wet end gravity dehydration system;
Fig. 2 is forming board structural representation in the wet end gravity dehydration described in the utility model system;
Fig. 3 is anhydrous leg Wiper blade structural representation in the traditional wet end gravity dehydration system;
Fig. 4 is anhydrous leg Wiper blade structural representation in the wet end gravity dehydration described in the utility model system;
Fig. 5 is the Wiper blade structural representation of wet end gravity dehydration system band freight; (tradition with the Wiper blade of freight with described in the utility model identical with a kind of structure in the middle of the Wiper blade of freight)
Fig. 6 is that traditional wet end gravity dehydration system uses view;
Fig. 7 is that wet end gravity dehydration described in the utility model system uses view;
Fig. 8 is the another kind of view of using of wet end gravity dehydration system described in the utility model;
Among the figure: forming table 1, forming board 2, anhydrous leg are scraped water element 3, band water leg is scraped water element 4, forming board lath 5, article one forming board lath 6, Wiper blade 7, water leg 8, head box 9;
The entire length A in forming board described in the utility model zone, article one forming board width of sheet D described in the utility model, the entire length A ' in traditional forming board zone, traditional forming board width of sheet D ';
A kind ofly be described in further details for the wet end gravity dehydration system architecture on the multi-cylinder long mesh paper machine described in the utility model in conjunction with the embodiments below by accompanying drawing.
The specific embodiment
A kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, as shown in Figure 7, it has forming board 2, anhydrous leg to scrape water element 3, band water leg is scraped water element 4, and order is installed on the forming table 1; Basic identical with traditional wet end gravity dehydration system, different is:
Whole wet end gravity dehydration system stroke is longer than traditional wet end gravity dehydration system (seeing the comparison of Fig. 6 and Fig. 7), the length of wet end gravity dehydration system (zone), namely the jet nit point from head box 9 crests of weir slurry stream overlaps the distance of Wiper blade end to last, and the wet end gravity dehydration system of traditional multi-cylinder long mesh paper machine of relatively equal fabric width and the speed of a motor vehicle has increased 10%-50%;
The lath quantity of traditional fourdrinier wire wire multi-cylinder paper machine of the relatively equal fabric width of the quantity of forming board lath and the speed of a motor vehicle increases 10%-50%, the length A in the conventional paper machines forming board zone of the relatively equal fabric width of the length A in forming board zone and the speed of a motor vehicle ' increase 10%-50% (seeing the comparison of Fig. 1 and Fig. 2, the comparison of Fig. 6 and Fig. 7);
As shown in Figure 2, in the present embodiment, 9 forming board laths that are parallel to each other (maybe can also be 5,6,7,8,10 etc.) are fixed on forming board 2 tops, are close to forming table 1;
Article one forming board lath 6 width D near head box 9 crests of weir slurry stream are the widest, and D between 150mm-300mm specifically can be: 150mm, 200mm, 250mm, 300mm; The width of other forming board laths 5 is consistent, between 50mm-80mm, specifically can be: 50mm, 60mm, 70mm, 80mm; Installation interval between the lath is 60-80mm, specifically can be: 60mm, 70mm, 80mm;
As shown in Figure 7 (or as shown in Figure 8), water component population amount is scraped by the traditional fourdrinier wire wire multi-cylinder paper machine wet end gravity dehydration system that the relatively equal fabric width of water component population amount and the speed of a motor vehicle are scraped by wet end gravity dehydration described in the utility model system increases 10%-50%, the length of the scraping water element arrangements zone relatively tradition length of scraping water element arrangements zone increases 10%-50%, and length refers to that scraping water element termination from first counts last and scrape water member end end and end;
The utility model can have 7-12 to scrape the water element, and wherein, 2-4 is that band water leg is scraped water element 4, and other are that anhydrous leg is scraped water element 3;
Scrape installation interval between the water element between 200-400mm; Specifically can be: 200mm, 250mm, 300mm, 350mm, 400mm;
The Wiper blade 7 that anhydrous leg described in the utility model is scraped on the water element 3 can be 0-7 ° with forming table 1 setting angle, be preferably greater than 0 ° less than 3 ° (can guarantee better paper pulp molding) or greater than 5 ° less than or equal to 7 ° (can improve better dewatering speed), it specifically can be 1 °, 2 °, 7 ° etc., as shown in Figure 4;
The Wiper blade 7 of scraping on the water element 4 with the water leg described in the utility model also can be 0-7 ° with forming table 1 setting angle, be preferably greater than 0 ° less than 3 ° (can guarantee better paper pulp molding) or greater than 5 ° less than or equal to 7 ° (can improve better paper production speeds), specifically can be 1 °, 2 °, 7 ° etc.;
When Wiper blade 7 described in the utility model was selected 0 ° with forming table 1 setting angle, the structure of demonstration was identical with traditional low speed paper machine (setting angle is 0 °) structure, as shown in Figure 5;
Content described in the utility model is not limited in the described content of the present embodiment.
Used specific case herein the utility model structure and embodiment are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present utility model.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (15)
1. wet end gravity dehydration system that is used on the multi-cylinder long mesh paper machine, it has forming board (2), anhydrous leg to scrape water element (3), band water leg is scraped water element (4), order is installed on the forming table (1), it is characterized in that: scrape the distance of water element end to last cover from the jet nit point of head box (9) crest of weir slurry stream, the wet end gravity dehydration zone length of traditional multi-cylinder long mesh paper machine of relatively equal fabric width and the speed of a motor vehicle increases 10%-50%.
2. as claimed in claim 1 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the lath quantity of traditional fourdrinier wire wire multi-cylinder paper machine of the relatively equal fabric width of forming board lath (5) quantity on the forming board (2) and the speed of a motor vehicle increases 10%-50%, the length A in traditional fourdrinier wire wire multi-cylinder paper machine forming board (2) zone of the relatively equal fabric width of the length A in forming board (2) zone and the speed of a motor vehicle, increases 10%-50%.
3. as claimed in claim 2 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the 5-10 bar forming board lath that is parallel to each other is fixed on forming board (2) top, and article one forming board lath (6) width of close head box (9) is between 150 millimeters-300 millimeters.
4. as claimed in claim 3 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the width of forming board lath (5) equates, between 50 millimeters-80 millimeters.
5. as claimed in claim 1 or 2 or 3 or 4 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: traditional fourdrinier wire wire multi-cylinder paper machine of the relatively equal fabric width of the quantity of scraping the water element in the wet end gravity dehydration system and the speed of a motor vehicle is scraped the water number of elements increases 10%-50%, scrapes the relative conventional paper machines of length in water element arrangements zone and scrapes water element arrangements zone length increase 10%-50%.
6. as claimed in claim 1 or 2 or 3 or 4 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the water element of scraping in the wet end gravity dehydration system has 7-12, wherein, 2-4 is that band water leg is scraped water element (4), and other are that anhydrous leg is scraped water element (3).
7. as claimed in claim 1 or 2 or 3 or 4 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the Wiper blade (7) of scraping the water element in the wet end gravity dehydration system is the 0-7 degree with forming table (1) setting angle.
8. as claimed in claim 7 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the Wiper blade (7) of scraping the water element in the wet end gravity dehydration system is less than 3 degree greater than 0 degree with forming table (1) setting angle.
9. as claimed in claim 7 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the Wiper blade (7) of scraping the water element in the wet end gravity dehydration system is less than or equal to 7 degree greater than 5 degree with forming table (1) setting angle.
10. as claimed in claim 5 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the Wiper blade (7) of scraping the water element in the wet end gravity dehydration system is the 0-7 degree with forming table (1) setting angle.
11. as claimed in claim 10 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the Wiper blade (7) of scraping the water element in the wet end gravity dehydration system is less than 3 degree greater than 0 degree with forming table (1) setting angle.
12. as claimed in claim 10 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the Wiper blade (7) of scraping the water element in the wet end gravity dehydration system is less than or equal to 7 degree greater than 5 degree with forming table (1) setting angle.
13. as claimed in claim 6 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the Wiper blade (7) of scraping the water element in the wet end gravity dehydration system is the 0-7 degree with forming table (1) setting angle.
14. as claimed in claim 13 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the Wiper blade (7) of scraping the water element in the wet end gravity dehydration system is less than 3 degree greater than 0 degree with forming table (1) setting angle.
15. as claimed in claim 13 a kind of for the wet end gravity dehydration system on the multi-cylinder long mesh paper machine, it is characterized in that: the Wiper blade (7) of scraping the water element in the wet end gravity dehydration system is less than or equal to 7 degree greater than 5 degree with forming table (1) setting angle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220459777 CN202830627U (en) | 2012-09-10 | 2012-09-10 | Mesh portion gravity dewatering system for multi-cylinder long mesh paper machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220459777 CN202830627U (en) | 2012-09-10 | 2012-09-10 | Mesh portion gravity dewatering system for multi-cylinder long mesh paper machine |
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| CN202830627U true CN202830627U (en) | 2013-03-27 |
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| CN 201220459777 Expired - Fee Related CN202830627U (en) | 2012-09-10 | 2012-09-10 | Mesh portion gravity dewatering system for multi-cylinder long mesh paper machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669082A (en) * | 2012-09-10 | 2014-03-26 | 国能纸业有限公司 | Mesh part gravity dewatering system for multi-cylinder long mesh paper machine |
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2012
- 2012-09-10 CN CN 201220459777 patent/CN202830627U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669082A (en) * | 2012-09-10 | 2014-03-26 | 国能纸业有限公司 | Mesh part gravity dewatering system for multi-cylinder long mesh paper machine |
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