CN204644774U - A kind of papermaking couch roll is from dewater unit - Google Patents
A kind of papermaking couch roll is from dewater unit Download PDFInfo
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- CN204644774U CN204644774U CN201520187947.8U CN201520187947U CN204644774U CN 204644774 U CN204644774 U CN 204644774U CN 201520187947 U CN201520187947 U CN 201520187947U CN 204644774 U CN204644774 U CN 204644774U
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- couch roll
- roll
- buck plate
- couch
- narrow slit
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Abstract
The utility model relates to pulp technology for making paper, particularly relate to a kind of papermaking couch roll from dewater unit, its structure comprises couch roll, the roll surface of couch roll offers some dewatering holes, also comprises the Buck Plate be obliquely installed, and the inclined plane of Buck Plate is towards the roll surface of couch roll, support is fixed in one end of Buck Plate, the other end of Buck Plate is pressed close to the roll surface of couch roll and forms a narrow slit with roll surface, and the distance between Buck Plate and couch roll roll surface increases gradually along couch roll direction of rotation, and the distance of narrow slit is set to 2 ~ 6mm.Couch roll of the present utility model rotates to narrow slit place and makes, progressively expand along with narrow slit is ascending, the vacuum of local can be formed at narrow slit place, the water in couch roll is made to be more prone to be thrown out of, which reduce the water yield turning back to paper, improve the mass dryness fraction of paper, thus save the steam consumption of oven-dry paper.
Description
Technical field
The utility model relates to pulp technology for making paper, particularly relates to a kind of papermaking couch roll from dewater unit.
Background technology
Need paper dry in paper-making process, generally come dry with steam, steam consumption is very large, so just need to consume a large amount of water and coal, not only need the resource of at substantial, fire coal also can cause serious air pollution, therefore, joint vapour is the important process of paper mill, and not only responding the fundamental state policy of national resources economizing type, is also the large key factor controlled cost in paper mill itself.Because steam is used to oven-dry paper, therefore, need the efficiency of the dehydration in early stage improving l Water Paper, reduce the moisture of l Water Paper as far as possible, make paper be easy to dry.
In prior art, paper-making process wet end dehydration before this, have a couch roll in wet end exit, be a roller being full of the rotation in hole, dehydrating amount is very large herein.But while dehydration, containing a large amount of water in its hole, the rotation of couch roll is leaned on to throw away, surface due to this couch roll has been full of hole, can not install scraper, after couch roll dewaters for a long time, the impurity such as fiber can block the hole on couch roll surface, cause the shipwreck in couch roll to be thrown out of, and the water do not got rid of is got back on paper along with the rotation of roller, causes dewatering efficiency not high.
Summary of the invention
The papermaking couch roll that the purpose of this utility model is to avoid weak point of the prior art and provides a kind of dehydrating effect good is from dewater unit.
The purpose of this utility model is achieved through the following technical solutions:
There is provided a kind of papermaking couch roll from dewater unit, comprise couch roll, the roll surface of described couch roll offers some dewatering holes, also comprise the Buck Plate be obliquely installed, the inclined plane of described Buck Plate is towards the roll surface of described couch roll, support is fixed in one end of described Buck Plate, the other end of described Buck Plate is pressed close to the roll surface of described couch roll and forms a narrow slit with described roll surface, distance between described Buck Plate and described couch roll roll surface increases gradually along described couch roll direction of rotation, and the distance of described narrow slit is set to 2 ~ 6mm.
Wherein, described Buck Plate is arranged at the side in the backhaul direction that described couch roll rotates.
Wherein, described Buck Plate is set to the thin plate of strip, and the length of described thin plate is consistent with the length of described couch roll.
Wherein, the distance of described narrow slit is set to 3mm.
Wherein, the angle between described Buck Plate and described couch roll roll surface is set to 23 ~ 26 degree.
Wherein, the angle of described Buck Plate and horizontal direction is set to 25 degree.
Wherein, the width of described Buck Plate is set to 30 ~ 75mm.
the beneficial effects of the utility model:
A kind of papermaking couch roll of the present utility model is from dewater unit, comprise couch roll, the roll surface of couch roll offers some dewatering holes, also comprise the Buck Plate be obliquely installed, the inclined plane of Buck Plate is towards the roll surface of couch roll, and support is fixed in one end of Buck Plate, and the other end of Buck Plate is pressed close to the roll surface of couch roll and forms a narrow slit with roll surface, distance between Buck Plate and couch roll roll surface increases gradually along couch roll direction of rotation, and the distance of narrow slit is set to 2 ~ 6mm.Adopt said structure, because one end of Buck Plate and the roll surface of couch roll form the narrow slit of 2 ~ 6mm, according to venturi principle, when couch roll rotates to herein, progressively expand because this narrow slit is ascending, the vacuum of local can be formed at this narrow slit place, the water in couch roll is made to be more prone to be thrown out of, which reduce the water yield turning back to paper, improve the mass dryness fraction of paper, thus save the steam consumption of oven-dry paper.
Accompanying drawing explanation
Utilize accompanying drawing to be described further the utility model, but the content in accompanying drawing is not formed any restriction of the present utility model.
Fig. 1 is the structural representation of a kind of papermaking couch roll of the present utility model from dewater unit.
Reference numeral:
Couch roll 1, dewatering hole 11;
Buck Plate 2;
Support 3.
Detailed description of the invention
With the following Examples and accompanying drawing the utility model is described in further detail.
A kind of papermaking couch roll of the present utility model is from dewater unit, as shown in Figure 1, comprise couch roll 1, the roll surface of couch roll 1 offers some dewatering holes 11, also comprise the Buck Plate 2 be obliquely installed, the inclined plane of Buck Plate 2 is towards the roll surface of couch roll 1, and support 3 is fixed in one end of Buck Plate 2, the other end of Buck Plate 2 is pressed close to the roll surface of couch roll 1 and forms a narrow slit with roll surface, and the distance between Buck Plate 2 and couch roll 1 roll surface increases gradually along couch roll 1 direction of rotation.In the present embodiment, the direction of rotation of couch roll is clockwise direction (i.e. direction shown in A, B in Fig. 1)
Concrete, Buck Plate 2 is arranged at the side in the backhaul direction (direction in Fig. 1 shown in B) that couch roll 1 rotates.During work, l Water Paper first dewaters through wet end, then the roll surface entering couch roll 1 by the exit of wet end carries out vacuum dehydration, water enters the inner chamber of couch roll 1 by dewatering hole 11, couch roll 1 rotates around the A direction shown in Fig. 1 and departs from paper gradually, is back to the position contacted with paper continues to dewater along with the rotation couch roll 1 of couch roll 1 after being thrown away by the water in inner chamber.On the backhaul direction (direction in Fig. 1 shown in A) that couch roll 1 rotates, along with the rotation of couch roll 1, the roll surface of couch roll 1 gradually near Buck Plate 2 until form the narrow slit of a 2 ~ 6mm with one end of Buck Plate 2, when couch roll 1 rotates to herein, progressively expand because this narrow slit is ascending, produce Venturi effect, namely the vacuum of local is formed at this narrow slit place, the water in couch roll 1 is made to be more prone to be thrown out of, which reduce the water yield turning back to paper, improve the mass dryness fraction of paper, thus save the steam consumption of oven-dry paper.
Concrete, Buck Plate 2 is set to the thin plate of strip, and the length of thin plate is consistent with the length of couch roll 1, thus improves the dehydrating effect of whole roll surface.
Concrete, the distance of narrow slit is set to 3mm, and the partial vacuum that this distance produces is best.
Concrete, the angle between Buck Plate 2 and couch roll 1 roll surface is set to 23 ~ 26 degree, and most preferably Buck Plate 2 is set to 25 degree with the angle of horizontal direction, and the partial vacuum produced under this condition is best, thus improves the dehydrating effect of couch roll 1.
Concrete, the width of Buck Plate 2 is set to 30 ~ 75mm.
Finally should be noted that; the restriction of above embodiment only for illustration of the technical solution of the utility model but not to the utility model protection domain; although be explained in detail the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (7)
1. a papermaking couch roll is from dewater unit, comprise couch roll and the vavuum pump with described couch roll inner space, the roll surface of described couch roll offers some dewatering holes, it is characterized in that: also comprise the Buck Plate be obliquely installed, the inclined plane of described Buck Plate is towards the roll surface of described couch roll, support is fixed in one end of described Buck Plate, the other end of described Buck Plate is pressed close to the roll surface of described couch roll and forms a narrow slit with described roll surface, distance between described Buck Plate and described couch roll roll surface increases gradually along described couch roll direction of rotation, the distance of described narrow slit is set to 2 ~ 6mm.
2. a kind of papermaking couch roll according to claim 1 is from dewater unit, it is characterized in that: described Buck Plate is arranged at the side in the backhaul direction that described couch roll rotates.
3. a kind of papermaking couch roll according to claim 1 is from dewater unit, it is characterized in that: described Buck Plate is set to the thin plate of strip, and the length of described thin plate is consistent with the length of described couch roll.
4. a kind of papermaking couch roll according to claim 1 is from dewater unit, it is characterized in that: the distance of described narrow slit is set to 3mm.
5. a kind of papermaking couch roll according to claim 1 is from dewater unit, it is characterized in that: the angle between described Buck Plate and described couch roll roll surface is set to 23 ~ 26 degree.
6. a kind of papermaking couch roll according to claim 5 is from dewater unit, it is characterized in that: the angle of described Buck Plate and horizontal direction is set to 25 degree.
7. a kind of papermaking couch roll according to claim 1 is from dewater unit, it is characterized in that: the width of described Buck Plate is set to 30 ~ 75mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187947.8U CN204644774U (en) | 2015-03-31 | 2015-03-31 | A kind of papermaking couch roll is from dewater unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187947.8U CN204644774U (en) | 2015-03-31 | 2015-03-31 | A kind of papermaking couch roll is from dewater unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204644774U true CN204644774U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520187947.8U Active CN204644774U (en) | 2015-03-31 | 2015-03-31 | A kind of papermaking couch roll is from dewater unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012643A (en) * | 2016-06-20 | 2016-10-12 | 许昌中亚工业智能装备股份有限公司 | Vacuum forming roller |
-
2015
- 2015-03-31 CN CN201520187947.8U patent/CN204644774U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012643A (en) * | 2016-06-20 | 2016-10-12 | 许昌中亚工业智能装备股份有限公司 | Vacuum forming roller |
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