CN202626738U - Ultra-low-speed headbox device - Google Patents
Ultra-low-speed headbox device Download PDFInfo
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- CN202626738U CN202626738U CN 201220245042 CN201220245042U CN202626738U CN 202626738 U CN202626738 U CN 202626738U CN 201220245042 CN201220245042 CN 201220245042 CN 201220245042 U CN201220245042 U CN 201220245042U CN 202626738 U CN202626738 U CN 202626738U
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Abstract
The utility model discloses an ultra-low-speed headbox device, which comprises a pulp inlet main pipe, a pulp distribution element, a headbox bottom plate, an upper lip plate, a lower lip plate and a rectifier roll, wherein the inner bottom surface of the headbox bottom plate is titled upwards to the lower lip plate and is in circular arc transition connection with the lower lip plate; and the rectifier roll is arranged on a circular arc transition part. Along the flowing direction of pulp, the inner bottom surface of the headbox bottom plate is titled upwards to the lower lip plate and is in circular arc transition connection with the lower lip plate, and the rectifier roll is arranged on the circular arc transition part. Therefore, the height of the rectifier roll can be reduced; when the speed of a paper machine is low, and the liquid level of the lower lip plate in a headbox is low, process requirements on immersion of the rectifier roll are met; and by adoption of the structure, the headbox can meet requirements that the paper machine manufactures paper with the pulp at ultra-low speed of 30 m/min under the condition of opening, a vacuum system and a control system are eliminated, and equipment cost is reduced. The ultra-low-speed headbox device is easy to operate and has a positive technical effect and large popularization and application values.
Description
Technical field
The utility model relates to the pulp and paper technology field, particularly a kind of Ultra-Low Speed headbox apparatus.
Background technology
Doctor-roll be in, the most frequently used energy dissipating and rectifier cell in the low-speed paper machine head box, when flow rate of slurry in the head box is relatively lower,, can play the effect that crossing current, neat and well spaced slurry stream, loosen collagen fibre wadding gather of eliminating through the rotary action of doctor-roll.But doctor-roll must be immersed in the slurry of head box in application process, and doctor-roll exposes the slurry face else if, can be because the rotation of doctor-roll to be brought air into, is produced bubble, and the while is hanging easily also.
According to the requirement of slurry network speed ratio, certain paper machine network speed must have the head box spouting velocity of a correspondence, and the spouting velocity of head box is confirmed by following formula:
In the formula: V
1Be the spouting velocity of head box, V
2Be the network speed of paper machine, K is the lag coefficient of slurry speed to network speed, and μ is a head box lip whitewashing coefficient; G is an acceleration of gravity, and H is a liquid level in the head box, i.e. height between slurry position peak and the aulaeum in the pond, head box weir; P is an air cushion pressure, and H+P is the stagnation pressure of head box.
When the obvious speed of a motor vehicle when the paper machine was very low, head box must have a very low spouting velocity, to satisfy the requirement of slurry network speed ratio; When spouting velocity was lower than 70m/min, the liquid level in the pond, head box weir was less than 100mm, and the diameter of general doctor-roll is not less than 100mm; Obviously general open type stream slurry stream cannot satisfy the requirement of doctor-roll for liquid level, and existing technology is to adopt the mode that vacuumizes, and promptly P < 0; Thereby can improve the liquid level of head box, satisfy the requirement of doctor-roll.
But vacuum headbox needs supporting vacuum system, exhausting pipeline and control corresponding system; Obviously higher than open headbox cost; Simultaneously paper machine speed changes hour, and the variation of required vacuum is also very little, and this precision for the control system has very high requirement.
Summary of the invention
The purpose of the utility model is to overcome the shortcoming and defect of above-mentioned prior art; A kind of Ultra-Low Speed headbox apparatus is provided; Can make doctor-roll be immersed in the slurry fully; Satisfy the technological requirement of doctor-roll head box, can reduce the weir pit level on the head box aulaeum again, need not just can satisfy liquid level requirement in the slurry network speed comparison Ultra-Low Speed head box through vacuum.
The utility model is realized through following technical proposals:
A kind of Ultra-Low Speed headbox apparatus; Comprise into slurry house steward, cloth slurry element, head box base plate, top lip of slice, aulaeum, rectification doctor-roll; It is characterized in that: the inner bottom surface of said head box base plate is inclined upward to aulaeum and is connected with the aulaeum arc transition, and the rectification doctor-roll is installed on this arc transition place.Also comprise an energy dissipating doctor-roll that is arranged at the outlet of cloth slurry element.
Said head box base plate is inclined upwardly and becomes 10 °～30 ° angles with horizontal plane.
When rectification doctor-roll radius is R0, the radius R 1=R0+3mm～5mm of arc transition.
Compared with prior art the beneficial effect of the utility model is:
The utility model Ultra-Low Speed headbox apparatus, along the flow direction of slurry, the inner bottom surface of head box base plate is inclined upward to aulaeum and is connected with the aulaeum arc transition, and the rectification doctor-roll is installed on this arc transition place.Thereby can reduce the height of rectification doctor-roll; Very low at paper machine speed, when the liquid level in the head box on the aulaeum is low, satisfy the technological requirement of rectification doctor-roll submergence; Through this structure; Head box just can satisfy the requirement that paper machine Ultra-Low Speed (like 30m/min) is manufactured paper with pulp under the condition of opening wide, and need not dispose vacuum system and control system, has reduced equipment cost.
The variation of paper machine speed certain limit just can realize that through the liquid level of regulating in the head box regulative mode is simple, reliable.
The utility model technological means is simple and easy to do, has positive technique effect and application value.
Description of drawings
Fig. 1 is the structural representation of the utility model device.
Fig. 2 is the partial enlarged drawing of Fig. 1.
The another kind of structural representation of Fig. 3 Fig. 1.
Among the last figure: advance to starch house steward 1, cloth slurry element 2, energy dissipating doctor-roll 3, pond, weir 4, flashboard 5, rectification doctor-roll 6, lip district 7, top lip of slice 8, aulaeum 9, micromatic setting 10, top lip of slice lifting device 11, head box base plate 12.
The specific embodiment
Below in conjunction with specific embodiment the utility model is done further concrete detailed description the in detail, but the embodiment of the utility model is not limited thereto, the technological parameter for not indicating especially can carry out with reference to routine techniques.
Embodiment
As shown in Figure 1; The utility model Ultra-Low Speed headbox apparatus comprises into slurry house steward 1, cloth slurry element 2, energy dissipating doctor-roll 3, pond, weir 4, flashboard 5, rectification doctor-roll 6, lip district 7, top lip of slice 8, aulaeum 9, micromatic setting 10, top lip of slice lifting device 11, head box base plate 12; The inner bottom surface of said head box base plate 12 is inclined upward to aulaeum 9 and is connected with aulaeum 9 arc transition, and rectification doctor-roll 6 is installed on this arc transition place, and said energy dissipating doctor-roll 3 is arranged at the exit of cloth slurry element 2.
As shown in Figure 3, saidly advance to starch house steward 1 and be quadrate centrum main pipe or circular cone house steward, cloth slurry element 2 be orifice plate, stepped diffuser or restrain in a kind of.Because the slurry that stepped diffuser comes out is more uniform and stable, thereby the outlet of cloth slurry element 2 can be disposed energy dissipating doctor-roll 3.
Said head box base plate 12 is inclined upwardly and becomes (preferred 15 ° at 10 °～30 ° angles with horizontal plane; Be β=15 °) get in the head boxs through cloth slurry element 2; Pass through 3 energy dissipatings of energy dissipating doctor-roll, flashboard 5 (vertically) prevention slurry crossing current and rectification doctor-roll 6 neat and well spaced slurries streams respectively, the loosen collagen fibre wadding gathers, and gets into then by top lip of slice 8 and aulaeum 9 to restrain the lip district 7 that forms; Behind micromatic setting 10 and the horizontal shotcrete thickness of top lip of slice lifting device 11 adjustment head boxs, the 7 whitewashing online from the lip district again.
When rectification doctor-roll 6 radiuses are R0, the radius R 1=R0+3mm～5mm of arc transition.
As shown in Figure 2.The center of circle of arc transition has the identical center of circle with rectification doctor-roll 6, thereby guarantees that rectification doctor-roll 6 is identical with the spacing of head box base plate 12, and rectification doctor-roll 6 radiuses are 50mm, the radius 54mm of arc transition.Distance H=the 20mm on aulaeum 9 and rectification doctor-roll 6 summits; The paper machine that surpasses 30m/min for the speed of a motor vehicle can both meet the demands; At this moment; Therefore the distance of pond, weir 4 liquid level peaks and aulaeum 9 can satisfy the requirement of doctor-roll (comprising energy dissipating doctor-roll 3, rectification doctor-roll 6) to the head box liquid level fully greater than 25mm.
Specifically, as shown in Figure 2, rectification doctor-roll 6 is installed on this arc transition place; Can reduce the height of rectification doctor-roll 6 summits and aulaeum 9, very low at paper machine speed, when the liquid level on the aulaeum 9 is low; Satisfy the technological requirement of rectification doctor-roll 6 submergences; Simultaneously arc transition has the identical center of circle with rectification doctor-roll 6, the big 3mm～5mm of radius ratio doctor-roll, thus guarantee all even reasonable of spacing between rectification doctor-roll 6 and the head box base plate 12.In this way, head box just can satisfy the requirement that paper machine Ultra-Low Speed (like 30m/min) is manufactured paper with pulp under the condition of opening wide.
Just can realize the utility model preferably as stated.
The foregoing description is the utility model preferred implementation; But the embodiment of the utility model is not restricted to the described embodiments; Other are any not to deviate from change, the modification done under spirit and the principle of the utility model, substitute, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of the utility model.
Claims (4)
1. Ultra-Low Speed headbox apparatus; Comprise into slurry house steward, cloth slurry element, head box base plate, top lip of slice, aulaeum, rectification doctor-roll; It is characterized in that: the inner bottom surface of said head box base plate is inclined upward to aulaeum and is connected with the aulaeum arc transition, and the rectification doctor-roll is installed on this arc transition place.
2. Ultra-Low Speed headbox apparatus according to claim 1 is characterized in that: also comprise an energy dissipating doctor-roll that is arranged at the outlet of cloth slurry element.
3. Ultra-Low Speed headbox apparatus according to claim 1 and 2 is characterized in that: said head box base plate is inclined upwardly and becomes 10 °～30 ° angles with horizontal plane.
4. Ultra-Low Speed headbox apparatus according to claim 1 is characterized in that: when rectification doctor-roll radius is R0, and the radius R 1=R0+3mm～5mm of arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220245042 CN202626738U (en) | 2012-05-28 | 2012-05-28 | Ultra-low-speed headbox device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220245042 CN202626738U (en) | 2012-05-28 | 2012-05-28 | Ultra-low-speed headbox device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202626738U true CN202626738U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220245042 Expired - Fee Related CN202626738U (en) | 2012-05-28 | 2012-05-28 | Ultra-low-speed headbox device |
Country Status (1)
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| CN (1) | CN202626738U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691224A (en) * | 2012-05-28 | 2012-09-26 | 华南理工大学 | Ultralow-speed flow box device |
| CN105544268A (en) * | 2016-02-03 | 2016-05-04 | 浙江兰良实业有限公司 | Raw material buffering device for producing glass fiber paper |
| CN109183489A (en) * | 2018-09-25 | 2019-01-11 | 福建锐信合成革有限公司 | A kind of release paper quetsch |
-
2012
- 2012-05-28 CN CN 201220245042 patent/CN202626738U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691224A (en) * | 2012-05-28 | 2012-09-26 | 华南理工大学 | Ultralow-speed flow box device |
| CN105544268A (en) * | 2016-02-03 | 2016-05-04 | 浙江兰良实业有限公司 | Raw material buffering device for producing glass fiber paper |
| CN105544268B (en) * | 2016-02-03 | 2017-07-04 | 浙江兰良实业有限公司 | A kind of raw material buffer unit for producing all-glass paper |
| CN109183489A (en) * | 2018-09-25 | 2019-01-11 | 福建锐信合成革有限公司 | A kind of release paper quetsch |
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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: 20121226 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |