CN102071588B - Complementary slurry distributor of headbox - Google Patents
Complementary slurry distributor of headbox Download PDFInfo
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- CN102071588B CN102071588B CN2010105428991A CN201010542899A CN102071588B CN 102071588 B CN102071588 B CN 102071588B CN 2010105428991 A CN2010105428991 A CN 2010105428991A CN 201010542899 A CN201010542899 A CN 201010542899A CN 102071588 B CN102071588 B CN 102071588B
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- slurry
- complementary
- headbox
- step diffuser
- distributor
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Abstract
The invention discloses a complementary slurry distributor of a headbox. The complementary slurry distributor is characterized by consisting of two step diffuser heads stacked up and down together in a complementary mode, wherein the step diffuser heads are symmetrical left and right and are not mutually communicated. Therefore, the complementary slurry distributor realizes complementation of slurry mass flow of two square cone header pipes and corresponding branch pipe bundles by skillfully using the characteristic of non-uniform slurry distribution of single step diffuser head, and can obtain good slurry distribution performance after the slurry passes through a slurry stabilizing chamber. The complementary slurry distributor has the advantages of simple structure, good rigidity and uniform slurry distribution.
Description
Technical field
The present invention 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 through turbulent flow generator and lip shrinking zone.Its course of work is following: paper pulp gets into pulp distributor from advancing stock pump, gets into steady slurry chamber through the tube bank of cloth slurry, and through behind the turbulent flow generator, pulp suspension stably gets into 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, and 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 increasingly highly, the influence that sheet forming quality is distributed by head box paper pulp is increasing.Therefore, be badly in need of improving the performance that is uniformly distributed with of headbox stock.
Summary of the invention
The object of the present invention is to provide a kind of complementary pulp distributor, overcome the existing square Taper Pipe pulp distributor of head box slurry defective pockety.
Complementary pulp distributor of the present invention is 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 symmetric; Not connected, wherein step diffuser headbox 1 is made up of transition conduit 1-1, a tube bank 1-2, return duct 1-3 and quadrate centrum main pipe 1-4, and step diffuser headbox 4 is made up 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.
The operation principle of complementary pulp distributor of the present invention is following: 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 ', and remainder paper pulp gets into 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 present invention compared with prior art has following advantage: the step diffuser headbox 1 of single use or 4 cloth slurry are all inhomogeneous.The present invention adopts step diffuser headbox 1 and 4 to be stacked together up and down with complimentary fashion, and left-right symmetric is not connected; During work, there is rule from low to high from the mass flow distribution of propping up each arm outflow of tube bank 1-2 and 1-2 ' along quadrate centrum main pipe 1-4 and 1-4 ' direction, and is 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, has realized 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.Thus it is clear that complementary pulp distributor of the present invention is simple in structure, good rigidity, cloth slurry evenly.
Description of drawings
Fig. 1 is the complementary pulp distributor structure principle chart of head box of the present invention;
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 14, 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 symmetric up and down; Not connected, be installed in the porch of head box.During work, paper pulp via the transition conduit 1-1 and the 1-1 ' of two quadrate centrum main pipes of symmetric arrangement, is got in quadrate centrum main pipe 1-4 and the 1-4 ' by the Taper Pipe import respectively in opposite directions; Backflow paper pulp is oppositely flowed out by two refluxing openings, gets into stock tank, and all the other paper pulp are got 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 symmetric is not connected.
2. the complementary pulp distributor of head box according to claim 1; It is characterized in that first step diffuser headbox (1) is made up of transition conduit (1-1), a tube bank (1-2), return duct (1-3) and quadrate centrum main pipe (1-4), second step diffuser headbox (4) is made up 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 |
|---|---|---|---|
| CN2010105428991A CN102071588B (en) | 2010-11-11 | 2010-11-11 | Complementary slurry distributor of headbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105428991A CN102071588B (en) | 2010-11-11 | 2010-11-11 | Complementary slurry distributor of headbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102071588A CN102071588A (en) | 2011-05-25 |
| CN102071588B true CN102071588B (en) | 2012-08-22 |
Family
ID=44030330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105428991A Expired - Fee Related CN102071588B (en) | 2010-11-11 | 2010-11-11 | Complementary slurry distributor of headbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102071588B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046418A (en) * | 2012-12-20 | 2013-04-17 | 华南理工大学 | Crescent double-layer flow box |
| CN103821023A (en) * | 2014-03-03 | 2014-05-28 | 广东石油化工学院 | Complementary headbox |
| CN104404810A (en) * | 2014-11-28 | 2015-03-11 | 重庆市雅洁纸业有限公司 | Taper pipe pulp distributor |
| CN105484090A (en) * | 2015-11-17 | 2016-04-13 | 广东石油化工学院 | Complementary type pulp distributing method of headbox |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387003A (en) * | 1980-07-25 | 1983-06-07 | J. M. Voith Gmbh | Headbox for papermaking machine |
| US6059929A (en) * | 1996-06-17 | 2000-05-09 | Voith Sulzer Papiermaschinen Gmbh | Three-layer headbox |
| CN101008162A (en) * | 2007-01-19 | 2007-08-01 | 华南理工大学 | Square cone slurry-distribution general tube for high speed paper machine head box and its production method |
| EP2060675A3 (en) * | 2007-11-19 | 2009-10-07 | Andritz AG | Sheet formation procedure and wet part for producing a sheet of fibrous material |
| CN201588147U (en) * | 2009-12-23 | 2010-09-22 | 天津天轻造纸机械有限公司 | Pulp distributing device with taper pipe |
| CN201891045U (en) * | 2010-11-11 | 2011-07-06 | 华南理工大学 | Complementary headbox of flow box |
-
2010
- 2010-11-11 CN CN2010105428991A patent/CN102071588B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387003A (en) * | 1980-07-25 | 1983-06-07 | J. M. Voith Gmbh | Headbox for papermaking machine |
| US6059929A (en) * | 1996-06-17 | 2000-05-09 | Voith Sulzer Papiermaschinen Gmbh | Three-layer headbox |
| CN101008162A (en) * | 2007-01-19 | 2007-08-01 | 华南理工大学 | Square cone slurry-distribution general tube for high speed paper machine head box and its production method |
| EP2060675A3 (en) * | 2007-11-19 | 2009-10-07 | Andritz AG | Sheet formation procedure and wet part for producing a sheet of fibrous material |
| CN201588147U (en) * | 2009-12-23 | 2010-09-22 | 天津天轻造纸机械有限公司 | Pulp distributing device with taper pipe |
| CN201891045U (en) * | 2010-11-11 | 2011-07-06 | 华南理工大学 | Complementary headbox of flow box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102071588A (en) | 2011-05-25 |
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Granted publication date: 20120822 Termination date: 20151111 |
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