CN105780579A - Pulp fluid box dilution water adding device and method - Google Patents
Pulp fluid box dilution water adding device and method Download PDFInfo
- Publication number
- CN105780579A CN105780579A CN201610281925.7A CN201610281925A CN105780579A CN 105780579 A CN105780579 A CN 105780579A CN 201610281925 A CN201610281925 A CN 201610281925A CN 105780579 A CN105780579 A CN 105780579A
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- Prior art keywords
- dilution water
- house steward
- slurry
- water passage
- pulp
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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
- D21F1/08—Regulating consistency
-
- 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
- D21F1/06—Regulating pulp flow
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Abstract
The invention discloses a pulp fluid box dilution water adding device and method. The device comprises a pulp fluid box, a dilution water main pipe, dilution water branch pipes and dilution water passages, wherein the dilution water passages are distributed in a pulp distributing pipe beam of the pulp fluid box; one side of each pulp distributing pipe is provided with one dilution water passage; a plurality of dilution water branch pipes are distributed on the dilution water main pipe; the dilution water branch pipes are communicated with a pulp inlet main pipe of the pulp fluid box through the dilution water passages; the flowing direction of the dilution water in the dilution water passages is opposite to the flowing direction of pulp in the pulp distributing pipe beam. According to the method, dilution water provided by the dilution water main pipe is distributed by the dilution water branch pipes, and then enters the pulp inlet main pipe through the dilution water passages; in the pulp inlet main pipe, the dilution water in each dilution water passage is added into pulp in the inlet position of the adjacent pulp distributing pipe, and is then fed into the pulp distributing pipe to be conveyed out by each pulp distributing pipe of the pulp distributing pipe beam. The device and the method have the advantages that the goal that the addition of the dilution water does not influence the outlet flow rate of the pulp distribution pipe can be achieved; the transverse flowing phenomenon is effectively avoided; the goal of regulating the transverse constant quantity of paper is achieved.
Description
Technical field
The present invention relates to pulp and paper technology field, particularly to a kind of headbox dilution water adding set and method.
Background technology
Invention and the application of local modulation slurry concentration control full width quantitative approach greatly increase the cross direction ration level distribution of paper and the uniformity coefficient of fibre orientation.The control method of dilution water head box is laterally to add dilution water in cloth slurry tube bank along head box, regulates the slurry concentration of each pipe in cloth slurry tube bank by changing the amount of dilution water, thus reaching the purpose of adjusting paper cross direction ration.
Generally, dilution water adds in cloth slurry tube bank or is vertical with slurry flow path direction, it is become a smaller angle with slurry flow path direction, that is dilution water flow to slurry flow path direction angle less than or equal to 90 degree, there is a relatively larger problem in this feed postition, that is exactly when dilution water flow is to time smaller with the angle of slurry flow path direction, the membership that adds of dilution water makes the flow of cloth slurry tube bank outlet increase, this increase is except adding the flow of dilution water itself, also can produce to pump into the slurry flow that effect increases owing to dilution water adds, the increase of the latter increases along with the increase of dilution water addition, so in the process adding dilution water adjustment flow, the slurry flow of cloth slurry tube bank outlet also changes therewith, thus producing crossing current.
Not having crossing current is the basic demand that head box designs, and in dilution water head box, it is to avoid crossing current is more necessary, because the slurry crossing current after cloth slurry arm, can affect the regulating effect of dilution water, and crossing current can affect the fibre orientation in head box whitewashing simultaneously.Therefore, in dilution water head box, the addition of dilution water to reduce the impact that cloth is starched branch outlet flow as far as possible, and desirable mode is that dilution water adds the rate of discharge not affecting cloth slurry arm completely.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, a kind of headbox dilution water adding set is provided, this device can realize the addition of dilution water does not affect the rate of discharge of cloth slurry arm, is prevented effectively from generation crossing current phenomenon, thus reaching the purpose by dilution water adjusting paper cross direction ration.
Another object of the present invention is to provide a kind of headbox dilution water adding method realized by said apparatus.
The technical scheme is that a kind of headbox dilution water adding set, including head box, dilution water house steward, dilution water arm and dilution water passage, what head box included being connected enters to starch house steward and Bu slurry tube bank, in cloth slurry tube bank, distribution has dilution water passage, every cloth slurry pipe side in cloth slurry tube bank is provided with a dilution water passage, the upper distribution of dilution water house steward has multiple dilution water arm, dilution water arm is connected with entering to starch house steward by dilution water passage, and in dilution water passage, the flow direction of dilution water is contrary with the flow direction of slurry in cloth slurry tube bank.
Described dilution water house steward is taper water inlet manifold, and the junction of each dilution water arm and dilution water house steward is respectively equipped with diluting water regulating valve, the external dilution water control system of each diluting water regulating valve.Wherein, diluting water regulating valve is electrodynamic valve, in conjunction with its external dilution water control system (this system can adopt the dilution water control system that existing equipment is general), can accurately control the flow of dilution water in each dilution water arm and corresponding dilution water passage, thus regulating the slurry concentration of every cloth slurry pipe in cloth slurry tube bank.
Along the slurry flow path direction entering to starch house steward, arranging a dilution water passage on front side of every cloth slurry pipe in the slurry tube bank of described cloth, dilution water passage is starched pipe with corresponding cloth and is be arranged in parallel, and dilution water passage nestles up cloth slurry pipe.
The length of described dilution water passage is not less than 100mm.The length of dilution water passage (i.e. dilution water arm and enter to starch the distance between house steward) can not be too small, guarantee dilution water enters in slurry house steward smoothly through dilution water passage, the experiment proved that, when the length of dilution water passage reaches 100～150mm, more stable dilution water flow can be obtained.
As a kind of preferred version, the length of described dilution water passage is 140mm.
For guaranteeing that the dilution water in dilution water passage can stably enter in cloth slurry pipe adjacent downstream, the dilution water flow velocity in dilution water passage can not be too high, and accordingly, as a kind of preferred version, in described dilution water passage, the flow velocity of dilution water is 0.2～0.4m/s.
Described dilution water arm and dilution water passage are vertically arranged, and each dilution water arm connects one or more dilution water passages, and when each dilution water arm connects multiple dilution water passage, multiple dilution water passages from top to bottom set gradually.
Described dilution water arm is round tube, and the two ends of dilution water arm are connected with dilution water house steward and dilution water passage respectively；
Dilution water passage is also round tube, the two ends of dilution water passage respectively with dilution water arm and enter to starch house steward and be connected.
Described head box also includes plenum chamber, turbulent flow generator and lip district, enters to starch house steward, cloth slurry tube bank, plenum chamber, turbulent flow generator and lip district and is sequentially connected with according to the flow direction of slurry.
Realize a kind of headbox dilution water adding method according to said apparatus, particularly as follows: the dilution water that dilution water house steward provides is after dilution water arm distributes, dilution water passage enter in slurry house steward；Starching in house steward entering, the dilution water in each dilution water passage is added in the slurry at adjacent cloth slurry tube inlet place, is subsequently sent to cloth slurry pipe, each cloth slurry pipe of cloth slurry tube bank send.
When above-mentioned headbox dilution water adding set and method use, its operation principle is specific as follows:
The dilution water come from dilution water house steward regulates after flow through diluting water regulating valve, enters in slurry house steward through dilution water arm and dilution water passage；
Along entering the slurry flow path direction starched in house steward, dilution water passage is arranged on the front of cloth slurry tube bank, and nestle up cloth slurry tube bank, every cloth slurry tube bank front is mounted on a dilution water passage, dilution water passage out dilution water enters in adjacent cloth slurry tube bank with the slurry stream mixing rear steering entering to starch house steward, regulate the slurry concentration of this row cloth slurry tube bank, thus reaching the purpose by dilution water adjusting paper cross direction ration；
Owing to dilution water passage dilution water out is to be directly entered into slurry house steward, it is rather than directly in cloth slurry tube bank, what therefore dilution water changed is the flow into the flow rather than cloth slurry tube bank starching house steward, therefore after adding dilution water, the rate of discharge of cloth slurry tube bank remains unchanged completely, thus efficiently avoid owing to the impact of performance and dilution water effect starched by cloth by the uneven crossing current that produces in plenum chamber of each cloth slurry tube bank rate of discharge.
The present invention, relative to prior art, has the advantages that
Slurry is diluted into slurry house steward by this headbox dilution water adding set and method by making dilution water be introduced into, then cloth slurry tube bank is sent into rapidly, rather than directly in cloth slurry tube bank, add dilution water, thus the addition of dilution water does not affect the flow of cloth slurry tube bank outlet, thus efficiently avoid each cloth slurry pipe rate of discharge inequality in head box and producing the phenomenon flow over, it is effectively ensured cloth slurry performance and dilution water effect.
This headbox dilution water adding set can be used in newly-designed head box, it is possible to transforms on the basis of existing head box, its simple in construction and ingenious, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of this headbox dilution water adding set.
Fig. 2 is the fragmentary sectional view in A-A direction in Fig. 1.
Fig. 3 is the B-B direction cross sectional view of Fig. 2.
Fig. 4 is the partial view in C direction in Fig. 2.
In above-mentioned each figure, each label is as follows: 1 is dilution water house steward, and 2 is diluting water regulating valve, and 3 is dilution water arm, and 4 is dilution water passage, and 5 for entering to starch house steward, and 6 is cloth slurry tube bank, and 6-1 is cloth slurry pipe, and 7 is plenum chamber, and 8 is turbulent flow generator, and 9 is lip district.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
The present embodiment one headbox dilution water adding set, the head box used is as it is shown in figure 1, formed by entering to starch house steward, cloth slurry tube bank, plenum chamber, turbulent flow generator and lip district.
Headbox dilution water adding set as shown in figures 1-4, including dilution water house steward, diluting water regulating valve, dilution water arm, dilution water passage and dilution water control system (not shown).The dilution water come from dilution water house steward regulates after flow through diluting water regulating valve, is entered in dilution water passage by dilution water arm.
Dilution water house steward is taper water inlet manifold, and dilution water arm is round tube.
Dilution water passage is round tube, is arranged in cloth slurry tube bank corresponding cloth slurry pipe front end, and parallel with cloth slurry pipe (namely multiple dilution water passages and multiple cloth are starched pipe and is arranged alternately, as shown in figures 2 or 4).
As shown in Figure 3 or Figure 4, dilution water passage end is connected with dilution water arm, and the other end communicates with entering to starch house steward.
Dilution water arm is arranged on the cloth upper other end relative with entering to starch house steward of slurry tube bank so that dilution water enter into slurry house steward direction with enter to starch that slurry in house steward flows into during cloth slurry is restrained is in opposite direction.
Along entering the slurry flow path direction starched in house steward, dilution water passage is arranged on the front of corresponding cloth slurry pipe, nestle up cloth slurry pipe, and it is parallel with cloth slurry pipe, every cloth slurry pipe front is mounted on a dilution water passage, diluting water regulating valve controls the flow of each column dilution water arm and dilution water passage, thus regulating the slurry concentration of each column cloth slurry pipe.
The length of dilution water passage, namely dilution water arm and the distance entering to starch house steward can not be too little, so that it is guaranteed that dilution water can enter in slurry house steward smoothly through dilution water passage, this distance is generally 100mm～150mm, is 120mm in the present embodiment.
For guaranteeing that dilution water passage dilution water out can stably enter in the cloth slurry pipe that downstream is adjacent, must be very low from dilution water passage dilution water flow velocity out, it is generally 0.2～0.4m/s.The diameter of dilution water arm and dilution water passage is had certain requirement by this flow velocity, circular is: first determine maximum dilution water flow, then dilution water arm and the sectional area of dilution water passage is calculated according to flow and flow rates demand, finally draw dilution water arm and the diameter of dilution water passage, so that it is guaranteed that be in desirable scope from dilution water passage dilution water flow velocity out.
When above-mentioned headbox dilution water adding set uses, its operation principle, particularly as follows: regulate after flow from the dilution water that dilution water house steward is next through diluting water regulating valve, enters in slurry house steward through dilution water arm and dilution water passage；
Along the slurry flow path direction entering to starch house steward, dilution water passage is arranged on the front of its corresponding cloth slurry tube bank, and nestle up cloth slurry tube bank, every cloth slurry tube bank front is mounted on a dilution water passage, dilution water passage dilution water out enters in adjacent cloth slurry tube bank (as denoted by the arrows in fig. 2) with the slurry stream mixing rear steering entering to starch house steward, regulate the slurry concentration in the slurry tube bank of this row cloth, thus reaching the purpose by dilution water adjusting paper cross direction ration.Owing to dilution water passage dilution water out is to be directly entered into slurry house steward, it is rather than directly in cloth slurry tube bank, what therefore dilution water changed is the flow into the flow rather than cloth slurry tube bank starching house steward, therefore after adding dilution water, the rate of discharge of cloth slurry tube bank remains unchanged completely, thus efficiently avoid owing to the impact of performance and dilution water effect starched by cloth by the uneven crossing current that produces in plenum chamber of each cloth slurry tube bank rate of discharge.
As it has been described above, just can realize the present invention preferably, above-described embodiment is only presently preferred embodiments of the present invention, is not used for limiting the practical range of the present invention；Namely all equalizations made according to present invention change and modify, and are all contained by the claims in the present invention scope required for protection.
Claims (10)
1. a headbox dilution water adding set, it is characterized in that, including head box, dilution water house steward, dilution water arm and dilution water passage, what head box included being connected enters to starch house steward and Bu slurry tube bank, in cloth slurry tube bank, distribution has dilution water passage, every cloth slurry pipe side in cloth slurry tube bank is provided with a dilution water passage, the upper distribution of dilution water house steward has multiple dilution water arm, dilution water arm is connected with entering to starch house steward by dilution water passage, and in dilution water passage, the flow direction of dilution water is contrary with the flow direction of slurry in cloth slurry tube bank.
2. a kind of headbox dilution water adding set according to claim 1, it is characterized in that, described dilution water house steward is taper water inlet manifold, and the junction of each dilution water arm and dilution water house steward is respectively equipped with diluting water regulating valve, the external dilution water control system of each diluting water regulating valve.
3. a kind of headbox dilution water adding set according to claim 1, it is characterised in that along the slurry flow path direction entering to starch house steward, arranging a dilution water passage on front side of every cloth slurry pipe in the slurry tube bank of described cloth, dilution water passage be arranged in parallel with corresponding cloth slurry pipe.
4. a kind of headbox dilution water adding set according to claim 1, it is characterised in that the length of described dilution water passage is more than 100mm.
5. a kind of headbox dilution water adding set according to claim 4, it is characterised in that the length of described dilution water passage is 140mm.
6. a kind of headbox dilution water adding set according to claim 1, it is characterised in that in described dilution water passage, the flow velocity of dilution water is 0.2～0.4m/s.
7. a kind of headbox dilution water adding set according to claim 1, it is characterised in that described dilution water arm and dilution water passage are vertically arranged, and each dilution water arm connects one or more dilution water passages；When each dilution water arm connects multiple dilution water passage, multiple dilution water passages from top to bottom set gradually.
8. a kind of headbox dilution water adding set according to claim 1, it is characterised in that described dilution water arm is round tube, and the two ends of dilution water arm are connected with dilution water house steward and dilution water passage respectively；
Dilution water passage is also round tube, the two ends of dilution water passage respectively with dilution water arm and enter to starch house steward and be connected.
9. a kind of headbox dilution water adding set according to claim 1, it is characterized in that, described head box also includes plenum chamber, turbulent flow generator and lip district, enters to starch house steward, cloth slurry tube bank, plenum chamber, turbulent flow generator and lip district and is sequentially connected with according to the flow direction of slurry.
10. device according to any one of claim 1～9 realizes a kind of headbox dilution water adding method, it is characterised in that the dilution water that dilution water house steward provides, after dilution water arm distributes, is entered in slurry house steward by dilution water passage；Starching in house steward entering, the dilution water in each dilution water passage is added in the slurry at adjacent cloth slurry tube inlet place, is subsequently sent to cloth slurry pipe, each cloth slurry pipe of cloth slurry tube bank send.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281925.7A CN105780579B (en) | 2016-04-29 | 2016-04-29 | A kind of headbox dilution water adding set and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610281925.7A CN105780579B (en) | 2016-04-29 | 2016-04-29 | A kind of headbox dilution water adding set and method |
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| Publication Number | Publication Date |
|---|---|
| CN105780579A true CN105780579A (en) | 2016-07-20 |
| CN105780579B CN105780579B (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610281925.7A Expired - Fee Related CN105780579B (en) | 2016-04-29 | 2016-04-29 | A kind of headbox dilution water adding set and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107700269A (en) * | 2017-10-27 | 2018-02-16 | 浙江荣晟环保纸业股份有限公司 | A kind of slurry concentration adjusting means of paper making equipment |
| CN114197236A (en) * | 2021-11-22 | 2022-03-18 | 浙江华章科技有限公司 | Method and device for adjusting paper banner quantification by adding dilution water in equal amount |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6294051B1 (en) * | 1999-04-13 | 2001-09-25 | Kimberly-Clark Worldwide, Inc. | Method for improving the edge strength of a fibrous mat |
| CN1884687A (en) * | 2006-07-07 | 2006-12-27 | 华南理工大学 | Device for roughly regulating or fine adjustment for paper banner through adding diluent water |
| CN101392471A (en) * | 2008-10-23 | 2009-03-25 | 华南理工大学 | Dilution water ring addition device of head box |
| CN101565911A (en) * | 2009-05-06 | 2009-10-28 | 华南理工大学 | Method and device for adjusting ration of paper banners by leading out stock flow and adding dilution water |
-
2016
- 2016-04-29 CN CN201610281925.7A patent/CN105780579B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6294051B1 (en) * | 1999-04-13 | 2001-09-25 | Kimberly-Clark Worldwide, Inc. | Method for improving the edge strength of a fibrous mat |
| CN1884687A (en) * | 2006-07-07 | 2006-12-27 | 华南理工大学 | Device for roughly regulating or fine adjustment for paper banner through adding diluent water |
| CN101392471A (en) * | 2008-10-23 | 2009-03-25 | 华南理工大学 | Dilution water ring addition device of head box |
| CN101565911A (en) * | 2009-05-06 | 2009-10-28 | 华南理工大学 | Method and device for adjusting ration of paper banners by leading out stock flow and adding dilution water |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107700269A (en) * | 2017-10-27 | 2018-02-16 | 浙江荣晟环保纸业股份有限公司 | A kind of slurry concentration adjusting means of paper making equipment |
| CN114197236A (en) * | 2021-11-22 | 2022-03-18 | 浙江华章科技有限公司 | Method and device for adjusting paper banner quantification by adding dilution water in equal amount |
| CN114197236B (en) * | 2021-11-22 | 2023-07-14 | 浙江华章科技有限公司 | Method and device for adjusting paper banner quantification by adding dilution water in equal quantity |
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| Publication number | Publication date |
|---|---|
| CN105780579B (en) | 2017-12-01 |
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