CN201891045U - Complementary headbox of flow box - Google Patents
Complementary headbox of flow box Download PDFInfo
- Publication number
- CN201891045U CN201891045U CN2010206053599U CN201020605359U CN201891045U CN 201891045 U CN201891045 U CN 201891045U CN 2010206053599 U CN2010206053599 U CN 2010206053599U CN 201020605359 U CN201020605359 U CN 201020605359U CN 201891045 U CN201891045 U CN 201891045U
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- CN
- China
- Prior art keywords
- headbox
- complementary
- pulp
- tube bank
- step diffuser
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- Expired - Lifetime
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Abstract
A complementary headbox of a flow box is characterized in that two step diffuser headboxes are vertically overlapped together in a complementary manner so as to form the complementary headbox, are symmetrical left and right and are not communicated with each other. Accordingly, the complementary headbox skillfully adopts the characteristic that a single step diffuser headbox is not uniform in pulp distribution, realizes complementation of mass and flow of pulp of two quadrate centrum main pipes and corresponding branch bundles thereof, and can obtain fine pulp distribution property after the pulp passes through a pulp stabilizing chamber. The complementary headbox of a flow box is simple in structure, fine in rigidity and uniform in pulp distribution.
Description
Technical field
The utility model relates to the head box technology of high-speed paper machine, specifically is the complementary pulp distributor of head box.
Background technology
At present, the high-speed paper machine head box mainly by pulp distributor, surely starch chamber, turbulent flow generator and lip shrinking zone and constitute, pulp distributor is first parts of head box, and the cloth slurry tube bank of pulp distributor links to each other with steady slurry chamber, surely starches the chamber and combines by turbulent flow generator and lip shrinking zone.Its course of work is as follows: paper pulp enters pulp distributor from advancing stock pump, enters steady slurry chamber by the tube bank of cloth slurry, and through behind the turbulent flow generator, pulp suspension stably enters the lip shrinking zone uniformly, sprays online then.This shows that the cloth slurry performance of pulp distributor directly has influence on the sheet forming quality.And existing pulp distributor generally adopts square Taper Pipe pulp distributor, square Taper Pipe rear wall shape according to the design of Bainas equation is complicated, can't make, can only replace curve with straight line, or segmental machining, the step diffuser headbox of these patterns causes a tube bank cloth slurry inhomogeneous because the rear wall form error is bigger, has a strong impact on page quality.Along with the Modern Paper Machine speed of a motor vehicle and fabric width require more and more highlyer, the influence that sheet forming quality is distributed by head box paper pulp is increasing.Therefore, be badly in need of improving the uniform performance of headbox stock.
The utility model content
The purpose of this utility model is to provide a kind of complementary pulp distributor, overcomes the existing square Taper Pipe pulp distributor of head box slurry defective pockety.
Complementary pulp distributor of the present utility model as shown in Figure 1, be to be stacked together up and down with complimentary fashion by two step diffuser headboxs 1 and 4, left-right symmetry, not connected, wherein step diffuser headbox 1 is made of transition conduit 1-1, tube bank 1-2, a return duct 1-3 and quadrate centrum main pipe 1-4, and step diffuser headbox 4 is made of transition conduit 1-1 ', tube bank 1-2 ', a return duct 1-3 ' and quadrate centrum main pipe 1-4 '; Transition conduit, return duct are installed in the two ends of quadrate centrum main pipe respectively, the tube bank be installed in quadrate centrum main pipe above.
The operation principle of complementary pulp distributor of the present utility model is as follows: paper pulp is pressed the volume flow that equates via the transition conduit 1-1 and the 1-1 ' of two quadrate centrum main pipes respectively, flow in the quadrate centrum main pipe in opposite directions by quadrate centrum main pipe 1-4 and 1-4 ' import, backflow paper pulp is oppositely flowed out by the refluxing opening of return duct 1-3 and 1-3 ', remainder paper pulp enters steady slurry chamber 2 by a tube bank 1-2 and 1-2 ' outflow, behind steady slurry, go into the lip contraction section by turbulent flow generator 3 streams with uniform distribution again, the whitewashing online.
The utility model compared with prior art has following advantage: the step diffuser headbox 1 of single use or 4 cloth slurry are all inhomogeneous.The utility model adopts step diffuser headbox 1 and 4 to be stacked together up and down with complimentary fashion, left-right symmetry, not connected, during work, from a mass flow distribution that each arm of tube bank 1-2 and 1-2 ' flows out along quadrate centrum main pipe 1-4 and 1-4 ' direction have from low to high rule, and be lower than desired value near the Taper Pipe arrival end, end is higher than desired value near refluxing, therefore, this complementary pulp distributor has utilized single step diffuser headbox cloth to starch uneven characteristics dexterously, realize two quadrate centrum main pipes and the corresponding complementation of propping up tube bank stock quality flow thereof, behind steady slurry chamber, can obtain good cloth slurry performance.As seen, simple in structure, the good rigidity of complementary pulp distributor of the present utility model, cloth slurry are evenly.
Description of drawings
Fig. 1 is the complementary pulp distributor structure principle chart of the utility model head box;
Fig. 2 is step diffuser headbox 1 structure chart among Fig. 1;
Fig. 3 is step diffuser headbox 4 structure charts among Fig. 1.
Among the figure,
1: step diffuser headbox, wherein 1-1: transition conduit, 1-4: square Taper Pipe, 1-3 return duct, 1-2 a: tube bank
2: surely starch the chamber
3: turbulent flow generator
4: step diffuser headbox, wherein 1-1 ': transition conduit, 1-4 ': square Taper Pipe, 1-3 ': return duct, 1-2 ' a: tube bank
The specific embodiment
As shown in Figure 1, during installation, at first transition conduit 1-1, square Taper Pipe 1-4, return duct 1-3 and a tube bank 1-2 are assembled into step diffuser headbox 1, transition conduit 1-1 ', square Taper Pipe 1-4 ', return duct 1-3 ' and a tube bank 1-2 ' are assembled into step diffuser headbox 4, then, step diffuser headbox 1 and 4 is stacked together left-right symmetry up and down, not connected, be installed in the porch of head box.During work, paper pulp is respectively via the transition conduit 1-1 and the 1-1 ' of two quadrate centrum main pipes of symmetric arrangement, enter in opposite directions in quadrate centrum main pipe 1-4 and the 1-4 ' by the Taper Pipe import, backflow paper pulp is oppositely flowed out by two refluxing openings, enters stock tank, and all the other paper pulp are entered in the steady slurry chamber 2 by a tube bank 1-2 and 1-2 ' outflow, behind steady slurry, thereby effectively solve high-speed paper machine Taper Pipe pulp distributor cloth and starch uneven problem, the paper pulp that is evenly distributed is gone into the lip contraction section by 3 streams with uniform distribution again, the whitewashing online.
Claims (2)
1. the complementary pulp distributor of a head box, it is characterized in that being stacked together up and down with complimentary fashion by two step diffuser headboxs constitutes, and left-right symmetry is not connected.
2. the complementary pulp distributor of head box according to claim 1, it is characterized in that step diffuser headbox (1) is made of transition conduit (1-1), a tube bank (1-2), return duct (1-3) and quadrate centrum main pipe (1-4), step diffuser headbox (4) is made of transition conduit (1-1 '), a tube bank (1-2 '), return duct (1-3 ') and quadrate centrum main pipe (1-4 '); Transition conduit, return duct are installed in the two ends of quadrate centrum main pipe respectively, the tube bank be installed in quadrate centrum main pipe above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206053599U CN201891045U (en) | 2010-11-11 | 2010-11-11 | Complementary headbox of flow box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206053599U CN201891045U (en) | 2010-11-11 | 2010-11-11 | Complementary headbox of flow box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891045U true CN201891045U (en) | 2011-07-06 |
Family
ID=44220523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206053599U Expired - Lifetime CN201891045U (en) | 2010-11-11 | 2010-11-11 | Complementary headbox of flow box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891045U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071588A (en) * | 2010-11-11 | 2011-05-25 | 华南理工大学 | Complementary slurry distributor of headbox |
| CN103046418A (en) * | 2012-12-20 | 2013-04-17 | 华南理工大学 | Crescent double-layer flow box |
-
2010
- 2010-11-11 CN CN2010206053599U patent/CN201891045U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071588A (en) * | 2010-11-11 | 2011-05-25 | 华南理工大学 | Complementary slurry distributor of headbox |
| CN102071588B (en) * | 2010-11-11 | 2012-08-22 | 华南理工大学 | Complementary slurry distributor of headbox |
| CN103046418A (en) * | 2012-12-20 | 2013-04-17 | 华南理工大学 | Crescent double-layer flow box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110706 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |