CN210737220U - Vacuum dewatering device of paper machine - Google Patents
Vacuum dewatering device of paper machine Download PDFInfo
- Publication number
- CN210737220U CN210737220U CN201921484647.0U CN201921484647U CN210737220U CN 210737220 U CN210737220 U CN 210737220U CN 201921484647 U CN201921484647 U CN 201921484647U CN 210737220 U CN210737220 U CN 210737220U
- Authority
- CN
- China
- Prior art keywords
- vacuum
- dehydration
- dewatering
- cotton cloth
- coarse cotton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 230000018044 dehydration Effects 0.000 claims abstract description 39
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 39
- 229920000742 Cotton Polymers 0.000 claims abstract description 32
- 239000004744 fabric Substances 0.000 claims abstract description 32
- 238000005406 washing Methods 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims description 7
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000011010 flushing procedure Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
The utility model relates to a vacuum dehydration system, concretely relates to vacuum dehydration device of paper machine, including compression roller and the vacuum roll that sets up along vertical direction to and pass paper and dehydration coarse cotton cloth between compression roller and the vacuum roll, the below of vacuum roll is provided with the water collector, the dehydration coarse cotton cloth is driven by the conveying roller that the annular distributes, the bottom of dehydration coarse cotton cloth is provided with the dehydration tank, the right side of dehydration tank is provided with the washing unit who cooperates with the dehydration coarse cotton cloth, the top of dehydration tank is provided with the dehydration panel that closely cooperates with the dehydration coarse cotton cloth, the dehydration tank is connected with vacuum system; drag the dewatering coarse cotton cloth along the annular direction through the conveying roller to extrude through compression roller and vacuum roll and make the paper dehydration, and dewater the coarse cotton cloth through vacuum system, reduce the water content of dewatering coarse cotton cloth, be favorable to improving dewatering coarse cotton cloth and to paper circulation dehydration efficiency.
Description
Technical Field
The utility model relates to a vacuum dewatering system, concretely relates to vacuum dewatering device of paper machine.
Background
The paper dewatering mode of the existing paper machine mostly adopts felt for dewatering, paper is pressed and dewatered successively by two carrier rollers, but the adopted ground shares one felt, the technology has the defect of poor dewatering capacity of the felt, and the problem that the felt rewetting wet paper in the pressing and dewatering process of the second carrier roller is caused by only adopting one blanket, so that the secondary dewatering efficiency of the felt is greatly restricted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a vacuum dehydration device of paper machine drags the dewatering coarse cotton cloth through the conveying roller along the annular direction to extrude through compression roller and vacuum roll and make the paper dehydration, and dewater the dewatering coarse cotton cloth through vacuum system, reduce the water content of dewatering coarse cotton cloth, be favorable to improving dewatering coarse cotton cloth and to paper circulation dehydration efficiency.
In order to realize the above purpose, the utility model discloses a technical scheme be: the utility model provides a vacuum dehydration device of paper machine, includes compression roller and the vacuum roll that sets up along vertical direction to and pass paper and dehydration coarse cotton cloth between compression roller and the vacuum roll, the below of vacuum roll is provided with the water collector, the dehydration coarse cotton cloth is driven by the conveying roller that the annular distributes, the bottom of dehydration coarse cotton cloth is provided with the dewatering box, the right side of dewatering box is provided with and dewaters coarse cotton cloth complex washing unit, the top of dewatering box is provided with the dehydration panel that closely cooperates with the dehydration coarse cotton cloth, the dewatering box is connected with vacuum system.
Preferably, the flushing device comprises a flushing tank, the dewatering felt horizontally penetrates through the flushing tank, flushing water pipes are arranged on the upper side and the lower side of the inner portion of the flushing tank, which are located on the dewatering felt, and a plurality of water spraying heads are arranged on the flushing water pipes.
Preferably, the water spray heads are uniformly arranged in the width direction of the dewatering felt.
Preferably, the vacuum system comprises a first pipeline communicated with the dewatering box, a second pipeline is communicated with the pipe wall of the first pipeline, a vacuum pump set and a turbine set are arranged on the second pipeline in parallel, and a second valve is arranged on the second pipeline and located between the vacuum pump set and the turbine set.
Preferably, the surface of the dewatering panel is provided with water suction holes in a staggered manner.
Preferably, one end of the first pipeline, which is far away from the dewatering box, is provided with a first valve.
Preferably, the vacuum pump set comprises a plurality of water-ring vacuum pumps which are communicated with the second pipeline in parallel.
Preferably, the turbine unit comprises a plurality of turbine vacuum machines which are communicated with the second pipeline in parallel.
Preferably, the exhaust ports of the vacuum pump set and the turbine set are respectively connected with a first exhaust pipe and a second exhaust pipe, the tail end of the first exhaust pipe is communicated with the water tank, the tail end of the second exhaust pipe is arranged in the water tank, the pipe wall of the tail part of the second exhaust pipe is provided with exhaust holes, and the exhaust holes comprise first air holes located above the water surface in the water tank and second air holes submerged in the water surface.
The utility model has the advantages that: drag the coarse cotton cloth along the annular direction through coarse cotton cloth actuating mechanism to extrude through compression roller and vacuum roll and make the paper dehydration, and dewater the coarse cotton cloth through vacuum system, reduce the water content of dehydration coarse cotton cloth, be favorable to improving dehydration coarse cotton cloth and to paper circulation dehydration efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of a vacuum system.
Fig. 3 is a schematic structural view of the second exhaust pipe.
Fig. 4 is a schematic structural view of a dewatering panel.
The text labels shown in the figures are represented as: 1. a conveying roller; 2. dewatering the coarse cotton cloth; 3. a water pan; 4. a vacuum pumping system; 5. flushing the water pipe; 6. a sprinkler head; 7. a flushing tank; 8. a vacuum roll; 9. a compression roller; 10. paper; 11. a dewatering box; 12. a dewatering panel; 13. a first conduit; 14. a second valve; 15. a first valve; 16. a second conduit; 17. a water-ring vacuum pump; 18. a first exhaust pipe; 19. a turbine vacuum machine; 20. a second exhaust pipe; 21. a pool; 22. a first air hole; 23. a second air hole; 24. a water suction hole.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.
As shown in fig. 1, the structure of the present invention is: a vacuum dewatering device of a paper machine comprises a press roll 9 and a vacuum roll 8 which are arranged along the vertical direction, and paper 10 and dewatering felt 2 passing through between the press roller 9 and the vacuum roller 8, a water pan 3 is arranged below the vacuum roller 8, the dewatering felt 2 is driven by a conveying roller 1 which is distributed annularly, the bottom of the dewatering felt 2 is provided with a dewatering box 11, the right side of the dewatering box 11 is provided with a washing device matched with the dewatering felt 2, the top of the dewatering box 11 is provided with a dewatering panel 12 tightly matched with the dewatering felt 2, the dewatering box 11 is connected with the vacuum system 4, the dewatering felt is dragged along the annular direction by a conveying roller and is extruded by a compression roller and a vacuum roller to dewater the paper, and the dewatering felt is dewatered by a vacuum system, so that the water content of the dewatering felt is reduced, and the circulation dewatering efficiency of the dewatering felt on paper is improved.
As shown in fig. 1, the washing device includes a washing tank 7, the dewatering felt 2 horizontally passes through the washing tank 7, washing water pipes 5 are respectively arranged inside the washing tank 7 and on the upper and lower sides of the dewatering felt 2, a plurality of water spraying heads 6 are arranged on the washing water pipes 5, the water spraying heads 6 are uniformly arranged along the width direction of the dewatering felt 2, and the residual dirt on the dewatering felt 2 is washed by the water spraying heads 6, so that the dirt is prevented from accumulating on the surface of the dewatering felt 2 and affecting the dewatering performance.
As shown in fig. 2, the vacuum system 4 includes a first pipeline 13 communicated with the dewatering box 11, a second pipeline 16 is communicated with a pipe wall of the first pipeline 13, a vacuum pump set and a turbine set are arranged on the second pipeline 16 in parallel, a second valve 14 is arranged between the vacuum pump set and the turbine set on the second pipeline 16, the turbine set and the vacuum pump set are combined to perform vacuum dewatering, so that a relatively stable vacuum degree can be provided, the turbine vacuum machine does not use circulating water cooling, a circulating water cooling process and related power requirements are also omitted, and the whole vacuum system has the advantages of energy consumption reduction, high working efficiency and stable operation.
As shown in fig. 4, the surface of the dewatering panel 12 is provided with water suction holes 24 in a staggered manner, and the water suction holes 24 in a staggered manner can reduce the local wear to the dewatering felt 12 and prolong the service life of the dewatering felt 12.
As shown in fig. 2, a first valve 15 is arranged at one end of the first pipeline 13 far away from the dewatering box 11, the first valve 15 is arranged to regulate the internal pressure of the pipeline, and when the vacuum pump set works alone, the first valve 15 is opened to prevent the pipeline from being shriveled and cracked due to negative pressure or gradual rise of vacuum generated by running or stopping of the system, so as to protect the safety of the equipment.
As shown in fig. 2, the vacuum pump group includes a plurality of water-ring vacuum pumps 17 connected in parallel to the second pipeline 16, and by providing the plurality of water-ring vacuum pumps, when the turbine unit needs maintenance, the vacuum pump group is started to ensure that the vacuum dehydration system operates normally, and the production can also be performed as usual.
As shown in fig. 2, the turbine unit includes a plurality of turbine vacuum machines 19 connected in parallel to the second pipeline 16, and the turbine vacuum machines 19 are arranged to effectively improve the vacuum-pumping efficiency and reduce the energy consumption of the system.
As shown in fig. 2 and 3, the exhaust ports of the vacuum pump set and the turbine set are respectively connected with a first exhaust pipe 18 and a second exhaust pipe 20, the tail end of the first exhaust pipe 18 is communicated with a water tank 21, the tail end of the second exhaust pipe 20 is arranged in the water tank 21, and the pipe wall at the tail part of the second exhaust pipe 20 is provided with an exhaust hole, wherein the exhaust hole comprises a first air hole 22 located above the water surface in the water tank 21 and a second air hole 23 submerged in the water surface.
When the dewatering felt is used specifically, the dewatering felt 2 is driven by a conveying roller 1 to circularly convey along a ring, a paper sheet 10 is dragged along the conveying direction of the dewatering felt 2, the paper sheet 10 is squeezed and dewatered by a vacuum roller 8 and a compression roller 9, most of water extruded by the vacuum roller 8 is pumped away to finish first-step dewatering, then the paper sheet 10 is separated from the dewatering felt 2, then the dewatering felt 2 passes through a flushing tank 7, dirt remained on the dewatering felt 2 is flushed by a water spraying head 6, the dirt is prevented from accumulating on the surface of the dewatering felt 2 to influence subsequent dewatering performance, then the dewatering felt 2 is further dewatered by a vacuum system 4, when the vacuum system 4 is in an initial state, a first valve 15 is closed, a second valve 14 is opened, 1-2 water ring type vacuum pumps 17 are started in a vacuum pump set, and 1-2 vacuum turbines 19 are started to be matched with the vacuum pump to supply the required vacuum degree for production, the rest vacuum pumps and the turbine vacuum machines are standby, when the vacuum pumping dehydration work is carried out, the tail gas of the turbine vacuum machine 19 is introduced into the water tank 21 through the second exhaust pipe 20 to be used for heating cold water, and the heated water is used for waste paper pulping, so that the energy recovery is facilitated; when the turbine unit needs to be overhauled, the first valve 15 is opened, the second valve 14 is closed, then the vacuum pump set is started to carry out vacuumizing dehydration, the required vacuum degree is supplied for production, the stable operation of a vacuum dehydration system is ensured when the turbine unit is overhauled, and the method has the advantages of reducing energy consumption, being high in working efficiency and stable in operation.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principle and the implementation of the present invention have been explained by using specific examples, the description of the above examples is only used to help understand the method and the core idea of the present invention, the above description is only the preferred implementation of the present invention, it should be pointed out that there is an infinite specific structure objectively due to the limited character expression, and for those skilled in the art, without departing from the principle of the present invention, several improvements, decorations or changes can be made, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.
Claims (9)
1. A vacuum dewatering device of a paper machine, characterized in that: including compression roller (9) and vacuum roll (8) that set up along vertical direction, and pass compression roller (9) with paper (10) and dehydration coarse cotton cloth (2) between vacuum roll (8), the below of vacuum roll (8) is provided with water collector (3), dehydration coarse cotton cloth (2) are driven by conveying roller (1) that the annular distributes, the bottom of dehydration coarse cotton cloth (2) is provided with dehydration tank (11), the right side of dehydration tank (11) is provided with and dewaters coarse cotton cloth (2) complex washing unit, the top of dehydration tank (11) is provided with and dewaters coarse cotton cloth (2) closely complex dehydration panel (12), dehydration tank (11) are connected with vacuum system (4).
2. A vacuum dewatering apparatus for a paper machine according to claim 1, characterized in that: the washing device comprises a washing tank (7), the dewatering coarse cotton cloth (2) horizontally penetrates through the washing tank (7), washing water pipes (5) are arranged on the upper side and the lower side of the dewatering coarse cotton cloth (2) in the washing tank (7), and a plurality of water spraying heads (6) are arranged on the washing water pipes (5).
3. A vacuum dewatering apparatus for a paper machine according to claim 2, characterized in that: the water spraying heads (6) are uniformly arranged along the width direction of the dewatering coarse cotton cloth (2).
4. A vacuum dewatering apparatus for a paper machine according to claim 1, characterized in that: the vacuum system (4) comprises a first pipeline (13) communicated with the dewatering box (11), a second pipeline (16) is communicated with the pipe wall of the first pipeline (13), a vacuum pump set and a turbine set are arranged on the second pipeline (16) in parallel, and a second valve (14) is arranged on the second pipeline (16) and located between the vacuum pump set and the turbine set.
5. The vacuum dewatering apparatus of a paper machine according to claim 4, characterized in that: the surface of the dewatering panel (12) is provided with water suction holes (24) in a staggered way.
6. The vacuum dewatering apparatus of a paper machine according to claim 4, characterized in that: and a first valve (15) is arranged at one end of the first pipeline (13) far away from the dewatering box (11).
7. The vacuum dewatering apparatus of a paper machine according to claim 4, characterized in that: the vacuum pump group comprises a plurality of water ring vacuum pumps (17) which are communicated with the second pipeline (16) in parallel.
8. The vacuum dewatering apparatus of a paper machine according to claim 4, characterized in that: the turbine unit comprises a plurality of turbine vacuum machines (19) which are connected in parallel to the second line (16).
9. A vacuum dewatering apparatus for a paper machine according to any one of claims 4 to 8, characterized in that: the vacuum pump group with turbine unit's gas vent is connected with first blast pipe (18) and second blast pipe (20) respectively, the end and pond (21) the intercommunication of first blast pipe (18), the end setting of second blast pipe (20) is in pond (21), be equipped with the exhaust hole on the afterbody pipe wall of second blast pipe (20), the exhaust hole is including first gas pocket (22) that are arranged in pond (21) water surface top and second gas pocket (23) that sink into the surface of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921484647.0U CN210737220U (en) | 2019-09-06 | 2019-09-06 | Vacuum dewatering device of paper machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921484647.0U CN210737220U (en) | 2019-09-06 | 2019-09-06 | Vacuum dewatering device of paper machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210737220U true CN210737220U (en) | 2020-06-12 |
Family
ID=71010681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921484647.0U Expired - Fee Related CN210737220U (en) | 2019-09-06 | 2019-09-06 | Vacuum dewatering device of paper machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210737220U (en) |
-
2019
- 2019-09-06 CN CN201921484647.0U patent/CN210737220U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |