CN203284679U - Top network former capable of adjustment of two-side differences of paper - Google Patents
Top network former capable of adjustment of two-side differences of paper Download PDFInfo
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- CN203284679U CN203284679U CN2013203068331U CN201320306833U CN203284679U CN 203284679 U CN203284679 U CN 203284679U CN 2013203068331 U CN2013203068331 U CN 2013203068331U CN 201320306833 U CN201320306833 U CN 201320306833U CN 203284679 U CN203284679 U CN 203284679U
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Abstract
The utility model discloses a top network former capable of adjustment of two-side differences of paper, which comprises a top network suction box and a bottom network suction box, wherein the top network suction box comprises multiple top network suction areas arranged in order along the forward direction of the paper, each top network suction area comprises a water scraping plate positioned on the lower surface of the top network suction box for scraping of moisture on the upper surface of the paper, a water baffle for prevention of water inside the top network suction area from backflow, a top network drain pipe positioned on the bottom of the top network suction area and a water suction channel formed between the water scraping plate and the water baffle; and the bottom network suction box comprises multiple bottom network suction areas arranged in order along the forward direction of the paper and a blast pipe and a bottom network drain pipe arranged in the bottom network suction area; and has the above structures and is advantageous in that the dehydration quantity of wet paper pages upwards and downwards and the two-side differences of the paper can be adjusted independently without influence on normal running of the network and uniform adjustment of the paper.
Description
Technical field
The utility model relates to the slurry pulp technology for making paper, relates in particular to a kind of top net former that can regulate paper two sides difference.
Background technology
Traditional long mesh paper making machine relies on single face to dewater, thereby makes by keeping of the filler of wire side page and fiber fines lowlyer, and the page wire side of formation is more positive coarse, causes the two sides of paper poor large.Simultaneously along with the carrying out of wet end dehydration, the concentration of slurry layer improves constantly, and it is poly-that the fiber in the slurry layer starts wadding, and along with the raising of concentration, the poly-degree of wadding also starts aggravation, finally causes the evenness of paper poor.
More domestic paper plants, in order to improve the paper-forming evenness of long mesh paper making machine, except the head box of selecting, it is poor often by increase forming table shake or interpolation ornamenting roller, to improve evenness and reduce two sides, but effect is limited, and these methods can only be used on low speed paper machine.In case paper machine speed surpasses 250m/min, the effect of the shake of forming table and ornamenting roller will be restricted.The more important thing is that the ornamenting roller does not possess the function of dehydration, adopt the fourdrinier part of ornamenting roller to remain the single face dehydration, can not fundamentally solve the poor problem in paper two sides, very little to improving formation of sheet and reducing the poor effect in two sides.Therefore, for further improving the paper quality of fourdriner forming, the top net former is a kind of good selection.
The top net former refers to before the wet web typing, increase a forming net above the long mesh paper making machine forming table, wet web passes through between two layers of mesh, make the dehydration of paper web upper and lower surface, simultaneously by extruding and hydraulic action between two layers of mesh, the loosen collagen fibre wadding is poly-, reduce the fiber floc sedimentation in the l Water Paper page, improve paper formation, the minimizing structural two sides of page is poor, thereby arrives the purpose that obviously improves page quality.
The top net former is start the 1950's to develop and enter papermaking equipment market.Be shaped, dewater and improve the aspects such as paper quality due to the top net former at paper, the advantage of many uniquenesses is arranged, so development is very rapid than common fourdriner forming device.
The top net former by spacer screen Wiper blade and top net Wiper blade press to two the net between the l Water Paper page, produce pressure fluctuation, improve formation of sheet, utilize simultaneously the dehydration of the extruding force promotion paper between two nets, particularly upwards dehydration, increase the loss degree of paper front fiber fines and filler, make the structure of paper positive and negative and raw material proportioning more approaching, thereby the two sides of minimizing paper is poor.
The two sides difference is an important performance indexes of Cultural Paper, printing paper and many speciality papers, the poor excessive one side in two sides can affect the dimensional stability of paper, cause the problem such as curling of paper in paper following process process, can affect the printing performance of paper on the other hand, reduce printing effect, cause the positive back face printing difference in quality very large, chromatography is inaccurate simultaneously.
Enter the water content of net former folder district, top l Water Paper page, roll-type top net former is about 1.5%, and horizontal top net former is about 4%, and the concentration of head box whitewashing online is generally 0.5%～1%.Therefore, oneself l Water Paper page in a large number dewater before entering the top net former, and oneself runs off the fiber fines of wire side page and filler in a large number.After entering the top net former, although the l Water Paper page is dehydration up and down simultaneously, if but do not take regulating measure to strengthen upwards dehydration, suitably suppress dehydration downwards, will there be larger difference in fiber fines and filer content positive and wire side,, even thereby paper captain wet end is equipped with the top net former, still can cause the certain two sides of paper poor.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming and defect of prior art, provides a kind of and can regulate the poor top net former in paper two sides, and having solved prior art can not the independent regulation l Water Paper page poor shortcoming of dehydrating amount and paper two sides up and down.
The utility model is achieved through the following technical solutions:
a kind of top net former that can regulate paper two sides difference, comprise top net suction box and the corresponding spacer screen suction box that is arranged on net suction box below, top, paper is clamped between the upper surface of the lower surface of top net suction box and spacer screen suction box, described top net suction box, formed along the top net suction zones that the paper direction of advance is arranged in order by a plurality of, each top net suction zones comprises, be arranged on the Wiper blade that is used for scraping upper sheet surface moisture of top net suction box lower surface, be used for the top net drainpipe that prevents the water fender of the aqueous reflux in the net suction zones of top and be arranged on net suction zones bottom, top, form water absorption channel between described Wiper blade and water fender, Wiper blade adopts macromolecular material or ceramic material.
Described spacer screen suction box, comprise a plurality of spacer screen suction zones that are arranged in order along the paper direction of advance, be arranged on blast pipe and spacer screen drainpipe in the spacer screen suction zones.
The upper surface of described spacer screen suction box is curve form; Between the end points of each Wiper blade, line is corresponding with the curve form of the upper surface of spacer screen suction box.
Described blast pipe is arranged on the middle part of each spacer screen suction zones casing, and the spacer screen drainpipe is arranged on the bottom of each spacer screen suction zones casing.
Last top net suction zones in the net suction box of described top is positioned at the top of spacer screen suction box rear side.
Described top net suction box 1 is provided be used to the adjusting device that makes top net suction box 1 move and move up and down with respect to spacer screen suction box circular arc.
Compared with prior art, the poor top net former in instinct adjusting paper two sides possesses following advantage and effect at least:
The utility model top net suction box, formed along the top net suction zones that the paper direction of advance is arranged in order by a plurality of, each top net suction zones comprises, be arranged on top net suction box lower surface the Wiper blade that is used for scraping upper sheet surface moisture, be used for the top net drainpipe that prevents the water fender of the aqueous reflux in the net suction zones of top and be arranged on net suction zones bottom, top, form water absorption channel between described Wiper blade and water fender.This patent spacer screen suction box can be divided into 2 (perhaps 3) suction zones, so that regulate, each suction zones all is equipped with blast pipe and spacer screen drainpipe, is used for air blast and draining and vacuumizes.Blast pipe is arranged on the casing centre position of each suction zones, and the spacer screen drainpipe is arranged on the bottom position of each suction zones casing, and is smooth and easy with the draining of guaranteeing the spacer screen suction box, and the spacer screen drainpipe is connected with vavuum pump with steam-water separator.
Top net suction box is provided be used to the adjusting device (not shown) that makes top net suction box move and move up and down with respect to spacer screen suction box circular arc.Make top net suction box integral body to carry out circular arc as the center of circle and to move up and down adjusting take the center of circle of the curved surface of spacer screen water tank.Thereby can regulate the degree of depth that each Wiper blade contacts with net, and can break away from wire side when draping.
The upper surface of spacer screen suction box is curve form; Between the end points of each Wiper blade, line is corresponding with the curve form of the upper surface of spacer screen suction box.Thereby making spacer screen and top network folder the l Water Paper page moves smoothly.
Adopt said structure, do not affecting on the basis that the top net normally moves and formation of sheet is regulated, the independent regulation l Water Paper page poor advantage of dehydrating amount and paper two sides up and down.
Description of drawings
Fig. 1 is the structural representation that the utility model can be regulated the poor top net former in paper two sides.
Fig. 2 is the structural representation of Fig. 1 top net suction box.
Fig. 3 is the structural representation of Fig. 1 spacer screen suction box.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As shown in Figure 1.The utility model can be regulated the poor top net former in paper two sides, comprise format roll 3 vacuum inhale move roller 4, outlet roller 5, later roller 6, school net roller 7, idler roller 8, inhale fog chamber 9, high pressure water jet pipe 10, guide-in roller 11, top net suction box 1 and the corresponding spacer screen suction box 2 that is arranged on net suction box 1 below, top, paper is clamped between the upper surface of the lower surface of top net suction box 1 and spacer screen suction box 2.
As shown in Figure 2.Described top net suction box 1, formed along the top net suction zones 1-1 that the paper direction of advance is arranged in order by a plurality of, each top net suction zones 1-1 comprises, be arranged on the Wiper blade 1-3 that is used for scraping upper sheet surface moisture of top net suction box 1 lower surface, the top net drainpipe 1-4 that is used for preventing the water fender 1-2 of the aqueous reflux in the net suction zones 1-1 of top and is arranged on top net suction zones 1-1 bottom, form water absorption channel 1-5 between described Wiper blade 1-3 and water fender 1-2.In the present embodiment, top net suction zones 1-1 has four suction zones to form, and shown in Fig. 2, last suction zones is less than 3.But according to practical situations, top net suction zones 1-1 quantity can also increase or reduce.Wiper blade 1-3 can adopt macromolecular material or ceramic material preferably.
As shown in Figure 3.Described spacer screen suction box 2, comprise a plurality of spacer screen suction zones 2-1 that are arranged in order along the paper direction of advance, be arranged on blast pipe 2-2 and spacer screen drainpipe 2-3 in spacer screen suction zones 2-1.Blast pipe 2-2 connects the air blast (not shown), the spacer screen drainpipe 2-3 (not shown) that is connected with vavuum pump with the steam-water separator (not shown).The present embodiment spacer screen suction zones 2-1 is divided into 2, but according to practical situations, its quantity can also increase or reduce.When the needs air blast enters in spacer screen suction box 2 and forms malleation, can be by being arranged on the size of the valve (not shown) adjusting blast on blast pipe 2-2.
As shown in Figure 3.The upper surface of described spacer screen suction box 2 is curve form; Between the end points of each Wiper blade 1-3, line is corresponding with the curve form of the upper surface of spacer screen suction box 2.Thereby making spacer screen and top network folder the l Water Paper page moves smoothly.The water that Wiper blade 1-3 strikes off, due to the high-speed motion of long mesh paper making machine, under the effect of inertia force, pours water absorption channel 1-5 by the interception of Wiper blade 1-3, and climbs over water fender 1-2 and enter into top net suction box 1, then by top net drainpipe 1-4, drains., because vavuum pump (not shown) swabbing action forms vacuum in top net suction box 1, form the power of draining on the other hand, the source, water source that Wiper blade 1-3 scrapes is constantly entered in top net suction box 1.
As shown in Figure 3.Described blast pipe 2-2 is arranged on the middle part of each spacer screen suction zones 2-1 casing, and spacer screen drainpipe 2-3 is arranged on the bottom of each spacer screen suction zones 2-1 casing, and is smooth and easy to guarantee the draining in spacer screen suction box 2.
As shown in Figure 2.Last top net suction zones 1-1 in described top net suction box 1 is positioned at the top of spacer screen suction box 2 rear sides.This layout, both guaranteed to have abundant water to enter in top net suction box 1, keeps the vacuum of top net suction box 1.Guaranteed again the spacer screen suction box 2 online water in rears tops be done remove clean.
Described top net suction box 1 is provided be used to the adjusting device that makes top net suction box 1 move and move up and down with respect to spacer screen suction box circular arc.(not shown).Make top net suction box 1 integral body to carry out circular arc as the center of circle and to move up and down adjusting take the center of circle of the curved surface of spacer screen water tank 2.Thereby can regulate the degree of depth that each Wiper blade 1-3 contacts with net, and can break away from wire side when draping.
Be provided with the valve (not shown) on described top net drainpipe 1-4 and spacer screen drainpipe 2-3.When air blast starts, water in spacer screen suction box 2 is connected with the steam-water separator (not shown) by spacer screen drainpipe 2-3, the top of steam-water separator is connected with the vacuum tube (not shown) of vavuum pump (not shown), insert in water seal tank lower end, form water seal, can be according to the actual conditions vavuum pump that vacuumizes or stop using.
This patent working mechanism is summarized as follows:
At first the top net is carried out normal regulating, (adjusting of because of top, netting belongs to general knowledge as well known to those skilled in the art to obtain good evenness effect, therefore at this, do not repeat), then according to the actual conditions of paper two sides difference, the air pressure of regulating in spacer screen suction box 2 is the size of negative pressure (vacuum) or malleation (air blast).
When the paper two sides that produces is poor larger, close vavuum pump (not shown) and the vacuum breaker (not shown) of spacer screen suction box 2, open valve (not shown) on spacer screen drainpipe 2-3 and the valve (not shown) on blast pipe 2-2, start air blast and start air blast, the water in spacer screen suction box 2 is discharged by spacer screen drainpipe 2-3.Along with the carrying out of air blast, the pressure in spacer screen suction box 2 constantly increases, and make the dehydration downwards of l Water Paper page become very difficult, and upwards dehydration is enhanced, and positive fiber fines and filer content constantly reduce, thereby reach the poor purpose in two sides of effective reduction paper.
Valve on blast pipe 2-2, for the size of air blast, not air blast, the adjusting blow rate required.
Just can realize preferably the utility model as mentioned above.
Embodiment of the present utility model is not restricted to the described embodiments; other are any does not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitute, combination, simplify; all should be the substitute mode of equivalence, within being included in protection domain of the present utility model.
Claims (7)
1. can regulate the poor top net former in paper two sides for one kind, comprise top net suction box and the corresponding spacer screen suction box that is arranged on net suction box below, top, paper is clamped between the upper surface of the lower surface of top net suction box and spacer screen suction box, it is characterized in that:
Described top net suction box, formed along the top net suction zones that the paper direction of advance is arranged in order by a plurality of, each top net suction zones comprises, be arranged on top net suction box lower surface the Wiper blade that is used for scraping upper sheet surface moisture, be used for the top net drainpipe that prevents the water fender of the aqueous reflux in the net suction zones of top and be arranged on net suction zones bottom, top, form water absorption channel between described Wiper blade and water fender;
Described spacer screen suction box, comprise a plurality of spacer screen suction zones that are arranged in order along the paper direction of advance, be arranged on blast pipe and spacer screen drainpipe in the spacer screen suction zones.
2. according to claim 1ly can regulate the poor top net former in paper two sides, it is characterized in that: the upper surface of described spacer screen suction box is curve form; Between the end points of each Wiper blade, line is corresponding with the curve form of the upper surface of spacer screen suction box.
3. according to claim 1 and 2ly can regulate the poor top net former in paper two sides, it is characterized in that: described blast pipe is arranged on the middle part of each spacer screen suction zones casing, and the spacer screen drainpipe is arranged on the bottom of each spacer screen suction zones casing.
4. according to claim 3ly can regulate the poor top net former in paper two sides, it is characterized in that: last the top net suction zones in the net suction box of described top is positioned at the top of spacer screen suction box rear side.
5. according to claim 3ly can regulate the poor top net former in paper two sides, it is characterized in that: Wiper blade adopts macromolecular material or ceramic material to make.
6. according to claim 3ly can regulate the poor top net former in paper two sides, it is characterized in that: described top net suction box is provided be used to the adjusting device that makes top net suction box move and move up and down with respect to spacer screen suction box circular arc.
7. the top net former that can regulate paper two sides difference according to claim 3, is characterized in that: be provided with valve on described top net drainpipe and spacer screen drainpipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203068331U CN203284679U (en) | 2013-05-30 | 2013-05-30 | Top network former capable of adjustment of two-side differences of paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203068331U CN203284679U (en) | 2013-05-30 | 2013-05-30 | Top network former capable of adjustment of two-side differences of paper |
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| Publication Number | Publication Date |
|---|---|
| CN203284679U true CN203284679U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203068331U Expired - Fee Related CN203284679U (en) | 2013-05-30 | 2013-05-30 | Top network former capable of adjustment of two-side differences of paper |
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| Country | Link |
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| CN (1) | CN203284679U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266526A (en) * | 2013-05-30 | 2013-08-28 | 华南理工大学 | Top net forming machine capable of adjusting two-side difference of paper |
| CN116219788A (en) * | 2023-02-08 | 2023-06-06 | 宁波亚洲浆纸业有限公司 | Method for improving paper flatness |
-
2013
- 2013-05-30 CN CN2013203068331U patent/CN203284679U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266526A (en) * | 2013-05-30 | 2013-08-28 | 华南理工大学 | Top net forming machine capable of adjusting two-side difference of paper |
| CN116219788A (en) * | 2023-02-08 | 2023-06-06 | 宁波亚洲浆纸业有限公司 | Method for improving paper flatness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20210530 |
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| CF01 | Termination of patent right due to non-payment of annual fee |