CN220202322U - Forming system for high-whiteness low-transparency coated gray-bottom white board paper - Google Patents
Forming system for high-whiteness low-transparency coated gray-bottom white board paper Download PDFInfo
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- CN220202322U CN220202322U CN202321419415.3U CN202321419415U CN220202322U CN 220202322 U CN220202322 U CN 220202322U CN 202321419415 U CN202321419415 U CN 202321419415U CN 220202322 U CN220202322 U CN 220202322U
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 136
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 68
- 239000011248 coating agent Substances 0.000 claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 26
- 238000007791 dehumidification Methods 0.000 claims abstract description 17
- 238000009423 ventilation Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 238000010790 dilution Methods 0.000 claims description 21
- 239000012895 dilution Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 239000002344 surface layer Substances 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 9
- 238000004513 sizing Methods 0.000 claims description 9
- 239000012792 core layer Substances 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 238000007761 roller coating Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 16
- 239000002245 particle Substances 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000003094 microcapsule Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The high-whiteness low-transparency coated gray-bottom white board paper forming system comprises a paper machine pulp tank module, a heavy calcium carbonate adding module, a pressure screen module, a head box module, a forming module, a coating machine, a negative pressure centrifugal steam heating ventilation dehumidification module and a coiling machine, wherein the paper machine pulp tank module, the pressure screen module, the head box module, the forming module, the coating machine, the negative pressure centrifugal steam heating ventilation dehumidification module and the coiling machine are connected in sequence; the heavy calcium carbonate adding module comprises a calcium carbonate storage tank, a switching valve, a calcium carbonate feeding pump, a pressure monitor and a filtering device which are sequentially connected in series. The utility model filters the slurry through the filter device in the heavy calcium carbonate adding module, can filter out large-particle heavy calcium carbonate, and simultaneously controls the concentration and flow of the slurry of the calcium carbonate, thereby reducing the abrasion to the forming net and improving the opacity of the coated gray-bottom white board paper; the utility model has strong practicability and has stronger popularization significance.
Description
Technical Field
The utility model relates to the technical field of papermaking, in particular to a high-whiteness low-transparency coated gray-base white board forming system.
Background
When the coated gray-bottom white board paper is produced and molded, a certain amount of heavy calcium carbonate is mostly added into the surface layer and lining slurry, so that the effect of improving the whiteness of paper products and reducing the transparency is achieved. However, in the existing papermaking process, because the heavy calcium carbonate particles are larger, larger abrasion is often caused to the forming net, the service life of equipment is seriously shortened, and the quality of the formed coated gray-bottom white board paper is difficult to reach the standard.
Disclosure of Invention
Based on this, there is a need to provide a high whiteness, low transparency coated gray base whiteboard paper forming system that addresses the deficiencies in the prior art.
The utility model provides a high whiteness low transparency coating ash bottom white board paper molding system, its includes paper machine thick liquid pond module, heavy calcium carbonate interpolation module, pressure screen module, head box module, shaping module, coating machine, negative pressure centrifugal steam heating ventilation dehumidification module and coiler, wherein paper machine thick liquid pond module, pressure screen module, head box module, shaping module, coating machine, negative pressure centrifugal steam heating ventilation dehumidification module and coiler connect gradually. The paper machine pulp tank module comprises a surface layer paper machine pulp tank, a lining paper machine pulp tank, a core layer paper machine pulp tank, a bottom lining paper machine pulp tank and a bottom layer paper machine pulp tank; the pressure screen module correspondingly comprises a surface layer pressure screen, a lining pressure screen, a core layer pressure screen, a bottom lining pressure screen and a bottom layer pressure screen; the head box module correspondingly comprises a face layer head box, a lining head box, a core layer head box, a bottom lining head box and a bottom layer head box. The heavy calcium carbonate adding module is respectively connected to the pipeline between the surface layer paper machine pulp tank and the surface layer pressure screen and between the lining paper machine pulp tank and the lining pressure screen, and comprises a calcium carbonate storage tank, a switch valve, a calcium carbonate feeding pump, a pressure monitor and a filtering device which are sequentially connected in series.
Further, the heavy calcium carbonate adding module further comprises a first flowmeter and a reflux valve. The first flowmeter is arranged at the downstream of the filtering device, the reflux valve is arranged on a reflux pipeline between the filtering device and the calcium carbonate storage tank, and the reflux valve is in signal connection with the first flowmeter.
Further, the heavy calcium carbonate adding module further comprises a dilution water storage tank, a second flowmeter and a dilution water regulating valve. The dilution water storage tank is connected to a pipeline between the filtering device and the first flowmeter, the second flowmeter and the dilution water regulating valve are sequentially arranged between the dilution water storage tank and the first flowmeter, and the dilution water regulating valve is connected with the second flowmeter through signals.
Further, the heavy calcium carbonate adding module further comprises a third flowmeter and a discharge regulating valve. The third flowmeter and the discharge regulating valve are sequentially arranged at the downstream of the first flowmeter.
Further, the heavy calcium carbonate adding module further comprises a filler storage tank and a filler feeding pump. The filler feeding pump is arranged at the downstream of the discharging regulating valve, and the filler storage tank is connected with the filler feeding pump.
Further, the forming module comprises a forming net part, a squeezer, a front dryer, a sizing machine, a rear dryer and a hard calender. The forming wire part, the squeezer, the front dryer, the sizing press, the rear dryer and the hard calender are sequentially connected in series, the forming wire part is further connected with the head box module, and the hard calender is further connected with the coating machine.
Further, the negative pressure centrifugal steam heating ventilation dehumidification module comprises a fan, a heat exchanger, a temperature sensor, a pressure sensor, a hot air box, a negative pressure sensor and an exhaust fan. The heat exchanger, the fan, the temperature sensor, the pressure sensor, the hot air box and the exhaust fan are sequentially connected in a closed loop mode, and the negative pressure sensor is arranged on the hot air box.
Further, the heavy calcium carbonate adding module is of a closed structural design, and the coating machine is a roller coating type coating machine.
In summary, the high-whiteness low-transparency coated gray-base white board forming system has the beneficial effects that: the slurry is filtered by a filtering device in the heavy calcium carbonate adding module, so that large-particle heavy calcium carbonate can be filtered out, the concentration and the flow of the calcium carbonate slurry are controlled, the wear to a forming net is reduced, and the opacity of the coated gray-bottom white board paper can be improved; the filler additive structure is arranged to carry out microcapsule encapsulation modification treatment on the calcium carbonate, so that the retention proportion of the calcium carbonate on a forming net can be improved, the cost of coating the gray-bottom white board paper is further reduced, and the whiteness of the coating gray-bottom white board paper is improved; the negative pressure centrifugal steam heating ventilation dehumidification technology is adopted to carry out effective hot ventilation dehumidification on the coated gray-bottom white board paper, so that the coating drying efficiency can be effectively improved and the energy consumption can be reduced; the heavy calcium carbonate adding module with a closed structural design can reduce dust pollution, and the roller coating type coating machine can improve coating adhesive force; the utility model has strong practicability and has stronger popularization significance.
Drawings
FIG. 1 is a schematic diagram of a system configuration of a high whiteness low transparency coated gray base white board forming system according to the present utility model;
fig. 2 is a schematic block diagram of the heavy calcium carbonate adding module in fig. 1;
fig. 3 is a schematic diagram of a module structure of the medium-pressure centrifugal steam heating ventilation and dehumidification module in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 to 3, the present utility model provides a high whiteness and low transparency coated ash base white board forming system 100, which comprises a paper machine pulp tank module 10, a heavy calcium carbonate adding module 20, a pressure screen module 30, a headbox module 40, a forming module 50, a coater 60, a negative pressure centrifugal steam heating ventilation dehumidification module 70 and a coiler 80, wherein the paper machine pulp tank module 10, the pressure screen module 30, the headbox module 40, the forming module 50, the coater 60, the negative pressure centrifugal steam heating ventilation dehumidification module 70 and the coiler 80 are sequentially connected.
The paper machine pulp tank module 10 comprises a surface layer paper machine pulp tank 11, a lining paper machine pulp tank 12, a core layer paper machine pulp tank 13, a bottom lining paper machine pulp tank 14 and a bottom layer paper machine pulp tank 15; the pressure screen module 30 correspondingly comprises a surface layer pressure screen 31, a lining pressure screen 32, a core layer pressure screen 33, a bottom lining pressure screen 34 and a bottom layer pressure screen 35; the headbox module 40 correspondingly includes a face headbox 41, a liner headbox 42, a core headbox 43, a bottom liner headbox 44, and a bottom headbox 45.
The heavy calcium carbonate adding module 20 is respectively connected to the pipelines between the surface layer paper machine pulp tank 11 and the surface layer pressure screen 31 and between the lining paper machine pulp tank 12 and the lining pressure screen 32, and the heavy calcium carbonate adding module 20 comprises a calcium carbonate storage tank 21, a switch valve 221, a calcium carbonate feeding pump 231, a pressure monitor 24 and a filtering device 25 which are sequentially connected in series. The heavy calcium carbonate is filtered and screened by the filtering device 25 before being added into the slurry, so that the large-particle calcium carbonate is removed. And as the heavy calcium carbonate particles added with the slurry are thinned, the abrasion of the heavy calcium carbonate particles to a forming net is greatly reduced during the subsequent forming, the quality of paper products is improved, the equipment loss is reduced, and the service life of equipment is greatly prolonged.
The heavy calcium carbonate addition module 20 further includes a first flow meter 261 and a return valve 222. The first flow meter 261 is arranged downstream of the filter device 25, the return valve 222 is arranged on the return line between the filter device 25 and the calcium carbonate reservoir 21, and the return valve 222 is in signal connection with the first flow meter 261. The first flow meter 261 can monitor the supply and addition amount of heavy calcium carbonate, automatically adjust the opening of the reflux valve 222 according to the setting, and further maintain the optimum amount of calcium carbonate added into the slurry all the time by changing the amount of the heavy calcium carbonate refluxed.
The heavy calcium carbonate addition module 20 further includes a dilution water tank 27, a second flowmeter 262, and a dilution water regulating valve 223. The dilution water tank 27 is connected to a pipeline between the filtering device 25 and the first flowmeter 261, the second flowmeter 262 and the dilution water regulating valve 223 are sequentially arranged between the dilution water tank 27 and the first flowmeter 261, and the dilution water regulating valve 223 is in signal connection with the second flowmeter 262. The second flowmeter 262 can monitor the flow rate of the dilution water, automatically adjust the opening of the dilution water adjusting valve 223 according to the setting, and maintain the optimum concentration of the calcium carbonate added to the slurry all the time by changing the addition ratio of the dilution water.
The heavy calcium carbonate adding module 20 further comprises a third flowmeter 263 and a discharge regulating valve 224. The third flowmeter 263 and the discharge regulating valve 224 are sequentially arranged downstream of the first flowmeter 261. In this embodiment, two groups of third flow meters 263 and discharge regulating valves 224 are respectively provided, the two groups of third flow meters 263 and discharge regulating valves 224 respectively monitor and automatically regulate and control the calcium carbonate addition amounts of the surface layer slurry and the surface layer slurry, and the slurry is further refined by separate addition, so that the forming effect of the final paper product is greatly improved.
The heavy calcium carbonate addition module 20 also includes a filler reservoir 28 and a filler feed pump 232. The filler feed pump 232 is disposed downstream of the discharge regulator 224, and the filler reservoir 28 is connected to the filler feed pump 232. The filler additive is added into heavy calcium carbonate by designing the filler clamping structure, and the calcium carbonate is subjected to microcapsule encapsulation modification treatment through the filler additive so as to improve the retention proportion of the calcium carbonate on a forming net, reduce the cost of coated gray-bottom white board paper and improve the whiteness of the coated gray-bottom white board paper.
The forming module 50 includes a forming wire section 51, a press 52, a front dryer 53, a size press 54, a rear dryer 55, and a hard calender 56. The wire section 51, the press 52, the front dryer 53, the size press 54, the rear dryer 55 and the hard calender 56 are connected in series in this order, and the wire section 51 is also connected to the headbox module 40, and the hard calender 56 is also connected 60 to the coater. Drying equipment is arranged before and after sizing to dry paper before and after sizing respectively, so that the sizing effect of the paper is greatly improved.
The negative pressure centrifugal steam heating ventilation and dehumidification module 70 comprises a fan 71, a heat exchanger 72, a temperature sensor 73, a pressure sensor 74, a hot air box 75, a negative pressure sensor 76 and an exhaust fan 77. The heat exchanger 72, the fan 71, the temperature sensor 73, the pressure sensor 74, the hot air box 75 and the exhaust fan 77 are sequentially connected in a closed loop, and the negative pressure sensor 76 is arranged on the hot air box 75. The negative pressure centrifugal steam heating ventilation dehumidification technology is adopted to carry out effective hot ventilation dehumidification on the coated gray-bottom white board paper, so that the coating drying efficiency can be effectively improved, and the energy consumption is reduced.
The heavy calcium carbonate adding module 20 is of a closed structure design, and the coater 60 is a roll coater. The heavy calcium carbonate addition module 20 having a closed structure design can reduce dust pollution, and the roll coater 60 can improve coating adhesion.
When the utility model is operated, firstly, each paper machine pulp pool in the paper machine pulp pool module 10 respectively conveys pulp to each pressure screen of the pressure screen module 30 for processing, and before the surface layer pulp and the surface lining pulp enter the corresponding pressure screen, the whiteness of the coated gray floor white board paper is improved and the transparency of the coated gray floor white board paper is reduced by respectively adding the heavy calcium carbonate with optimal concentration and weight by the heavy calcium carbonate adding module 20. And then, after screening processing by a pressure screen, transferring the slurry by a head box module 40, flowing the slurry into a forming net part for preliminary forming, and then sequentially passing through a squeezer, a front dryer, a sizing machine, a rear dryer and a hard calender for further squeezing, dewatering, drying sizing and surface calendering. The further formed paper product is then surface coated by a roll coater 60, and after the coating is completed, the paper product is dried again and dehumidified by a negative pressure centrifugal steam heating and ventilation and dehumidification module 70 to complete the formation of the paper product. Finally, the paper product thus produced is wound and stored in the winding machine 80.
In summary, the high whiteness and low transparency coated gray-base whiteboard paper forming system 100 of the present utility model has the following advantages: the slurry is filtered by the filtering device 25 in the heavy calcium carbonate adding module 20, so that the heavy calcium carbonate with large particles can be filtered out, the concentration and the flow of the calcium carbonate slurry are controlled, the wear to a forming net is reduced, and the opacity of the coated gray-bottom white board paper can be improved; the filler additive structure is arranged to carry out microcapsule encapsulation modification treatment on the calcium carbonate, so that the retention proportion of the calcium carbonate on a forming net can be improved, the cost of coating the gray-bottom white board paper is further reduced, and the whiteness of the coating gray-bottom white board paper is improved; the negative pressure centrifugal steam heating ventilation dehumidification technology is adopted to carry out effective hot ventilation dehumidification on the coated gray-bottom white board paper, so that the coating drying efficiency can be effectively improved and the energy consumption can be reduced; the heavy calcium carbonate adding module 20 with a closed structure design can reduce dust pollution, and the roller coating type coater 60 can improve coating adhesive force; the utility model has strong practicability and has stronger popularization significance.
The above examples illustrate only one embodiment of the utility model, which is described in more detail and is not to be construed as limiting the scope of the utility model. It should be noted that variations and modifications can be made by those skilled in the art without departing from the inventive concept, which fall within the scope of the utility model. Accordingly, the scope of the utility model should be determined from the following claims.
Claims (8)
1. A high whiteness low transparency coating ash base white board paper molding system which characterized in that: the system comprises a paper machine pulp tank module, a heavy calcium carbonate adding module, a pressure screen module, a flow box module, a forming module, a coating machine, a negative pressure centrifugal steam heating, ventilating and dehumidifying module and a coiling machine, wherein the paper machine pulp tank module, the pressure screen module, the flow box module, the forming module, the coating machine, the negative pressure centrifugal steam heating, ventilating and dehumidifying module and the coiling machine are connected in sequence; the paper machine pulp tank module comprises a surface layer paper machine pulp tank, a lining paper machine pulp tank, a core layer paper machine pulp tank, a bottom lining paper machine pulp tank and a bottom layer paper machine pulp tank; the pressure screen module correspondingly comprises a surface layer pressure screen, a lining pressure screen, a core layer pressure screen, a bottom lining pressure screen and a bottom layer pressure screen; the head box module correspondingly comprises a face layer head box, a lining head box, a core layer head box, a bottom lining head box and a bottom layer head box; the heavy calcium carbonate adding module is respectively connected to the pipeline between the surface layer paper machine pulp tank and the surface layer pressure screen and between the lining paper machine pulp tank and the lining pressure screen, and comprises a calcium carbonate storage tank, a switch valve, a calcium carbonate feeding pump, a pressure monitor and a filtering device which are sequentially connected in series.
2. The high whiteness, low transparency coated gray base whiteboard paper forming system according to claim 1, wherein: the heavy calcium carbonate adding module further comprises a first flowmeter and a reflux valve; the first flowmeter is arranged at the downstream of the filtering device, the reflux valve is arranged on a reflux pipeline between the filtering device and the calcium carbonate storage tank, and the reflux valve is in signal connection with the first flowmeter.
3. The high whiteness, low transparency coated gray base whiteboard paper forming system according to claim 2, wherein: the heavy calcium carbonate adding module further comprises a dilution water storage tank, a second flowmeter and a dilution water regulating valve; the dilution water storage tank is connected to a pipeline between the filtering device and the first flowmeter, the second flowmeter and the dilution water regulating valve are sequentially arranged between the dilution water storage tank and the first flowmeter, and the dilution water regulating valve is connected with the second flowmeter through signals.
4. The high whiteness, low transparency coated gray base whiteboard paper forming system according to claim 2, wherein: the heavy calcium carbonate adding module further comprises a third flowmeter and a discharge regulating valve; the third flowmeter and the discharge regulating valve are sequentially arranged at the downstream of the first flowmeter.
5. The high whiteness, low transparency coated gray base whiteboard paper forming system according to claim 4, wherein: the heavy calcium carbonate adding module further comprises a filler storage tank and a filler feeding pump; the filler feeding pump is arranged at the downstream of the discharging regulating valve, and the filler storage tank is connected with the filler feeding pump.
6. The high whiteness, low transparency coated gray base whiteboard paper forming system according to claim 1, wherein: the forming module comprises a forming net part, a squeezer, a front dryer, a sizing machine, a rear dryer and a hard calender; the forming wire part, the squeezer, the front dryer, the sizing press, the rear dryer and the hard calender are sequentially connected in series, the forming wire part is further connected with the head box module, and the hard calender is further connected with the coating machine.
7. The high whiteness, low transparency coated gray base whiteboard paper forming system according to claim 1, wherein: the negative pressure centrifugal steam heating ventilation dehumidification module comprises a fan, a heat exchanger, a temperature sensor, a pressure sensor, a hot air box, a negative pressure sensor and an exhaust fan; the heat exchanger, the fan, the temperature sensor, the pressure sensor, the hot air box and the exhaust fan are sequentially connected in a closed loop mode, and the negative pressure sensor is arranged on the hot air box.
8. The high whiteness, low transparency coated gray base whiteboard paper forming system according to claim 1, wherein: the heavy calcium carbonate adding module is of a closed structural design, and the coating machine is a roller coating type coating machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321419415.3U CN220202322U (en) | 2023-06-05 | 2023-06-05 | Forming system for high-whiteness low-transparency coated gray-bottom white board paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321419415.3U CN220202322U (en) | 2023-06-05 | 2023-06-05 | Forming system for high-whiteness low-transparency coated gray-bottom white board paper |
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| Publication Number | Publication Date |
|---|---|
| CN220202322U true CN220202322U (en) | 2023-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321419415.3U Active CN220202322U (en) | 2023-06-05 | 2023-06-05 | Forming system for high-whiteness low-transparency coated gray-bottom white board paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220202322U (en) |
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2023
- 2023-06-05 CN CN202321419415.3U patent/CN220202322U/en active Active
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