CN111005248B - Drum pulping device and pulping method thereof - Google Patents
Drum pulping device and pulping method thereof Download PDFInfo
- Publication number
- CN111005248B CN111005248B CN201911337412.3A CN201911337412A CN111005248B CN 111005248 B CN111005248 B CN 111005248B CN 201911337412 A CN201911337412 A CN 201911337412A CN 111005248 B CN111005248 B CN 111005248B
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- slag
- rotary drum
- chain plate
- waste paper
- plate machine
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- 238000004537 pulping Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002893 slag Substances 0.000 claims abstract description 119
- 239000010893 paper waste Substances 0.000 claims abstract description 63
- 238000012216 screening Methods 0.000 claims abstract description 30
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 239000013049 sediment Substances 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000012535 impurity Substances 0.000 claims description 23
- 238000005303 weighing Methods 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 239000000123 paper Substances 0.000 description 13
- 239000000835 fiber Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010791 domestic waste Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
- D21B1/08—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being waste paper; the raw material being rags
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
- D21D5/06—Rotary screen-drums
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
The invention provides a rotary drum pulping device capable of ensuring physical strength of raw paper and reducing processing load of a subsequent working section and a pulping method thereof, wherein the rotary drum pulping device comprises a chain plate unit for conveying and dispersing domestic OCC waste paper and a rotary drum pulper for pulping the dispersed domestic OCC waste paper, the rotary drum pulper comprises a rotary drum and a pulp tank arranged at the rear lower part of the rotary drum, a crushing zone is provided with crushing cutters which are arranged at intervals along the inner side wall of the rotary drum in a spiral manner, the crushing cutters can rotate along the rotary drum to crush waste paper raw materials into pulp and push the crushed pulp to a screening zone, the screening zone is provided with sieve holes which are arranged along the circumferential direction of the rotary drum and are used for discharging the pulp into the pulp tank, the screening zone is also provided with spiral baffles which are arranged along the inner side wall of the rotary drum in a spiral manner at intervals, and a stirring assembly for stirring the pulp is arranged in the pulp tank; the pulping method comprises the steps of waste paper dispersion, disintegration, screening, tailings packaging, stirring, primary deslagging, sediment, secondary deslagging and slag dragging.
Description
[ Field of technology ]
The invention relates to a rotary drum pulping device and a pulping method thereof.
[ Background Art ]
The production of the quantitative corrugated medium below 70g/m 2 is still relatively low due to the quality of waste paper raw materials, production equipment and process. According to market supply and demand information, the existing packaging paper and paperboard market is basically free of corrugated medium with the weight below 50g/m 2. The low gram weight products on the market at present increase the strength of paper sheets mainly through domestic waste paper OCC and matching with some imported waste paper American waste AOCC and European waste EOCC. The domestic waste paper is mainly straw fiber, contains more impurities, has low fiber length and low strength, and can ensure the strength of the fiber, thereby preventing the low quantification process of the high-strength corrugated base paper. In the existing production technology, waste paper is crushed by a hydraulic pulper, and the crushing mode is that secondary fibers are cut by a blade of a paper crusher, so that the fibers are shortened, and the physical index of the finished paper is reduced. Plastic impurities and the like are cut to be smaller, so that the plastic impurities and the like enter the next working procedure along with the slurry, and the processing load of the next working procedure is increased.
[ Invention ]
The invention aims to provide a rotary drum pulping device and a pulping method thereof, which can ensure the physical strength of base paper and reduce the processing load of the subsequent working section.
The purpose of the invention is realized in the following way:
The utility model provides a rotary drum pulping device, is including being used for carrying and dispersing the link joint unit of domestic OCC waste paper and being used for making the domestic OCC waste paper of dispersion into the rotary drum pulper of thick liquid, the rotary drum pulper includes the rotary drum and locates the thick liquid groove of rotary drum rear below, the front end of rotary drum is equipped with the white water and adds the mouth, the front portion and the back of rotary drum are respectively crushing district and screening district, the crushing district is equipped with along the crushing sword of the inside wall spiral interval setting of rotary drum, the crushing sword can be followed the rotary drum rotates in order to break up waste paper raw materials into thick liquid and advance the thick liquid of crushing toward the screening district, be equipped with in the rotary drum to the white water interpolation device of screening district is added, the screening district is equipped with along the circumference setting of rotary drum and is used for discharging thick liquid to the sieve mesh in the thick liquid groove, the screening district still is equipped with along the heliciform baffle that the inside wall spiral interval setting of rotary drum is used for discharging the tail slag toward the rear end, the rear end is equipped with and is used for collecting the baling press, be equipped with and is used for stirring the thick liquid in the baling press to stir the subassembly.
The rotary drum pulping device comprises the chain plate machine, the second chain plate machine and the third chain plate machine, wherein the first chain plate machine and the third chain plate machine are low in front end and high in rear end, the second chain plate machine is horizontally arranged, and the height of the second chain plate machine is higher than that of the front end of the third chain plate machine and lower than that of the rear end of the first chain plate machine.
In the drum pulping device, the operation speed of the second chain plate machine is larger than the operation speed of the first chain plate machine and smaller than the operation speed of the third chain plate machine.
The rotary drum pulping device further comprises a discharging assembly, the discharging assembly comprises a first high-concentration slag remover, a second high-concentration slag remover, a pulp tank, a slag settling tank and a slag extractor, the input end of the first high-concentration slag remover is communicated with the bottom of the pulp tank for removing heavy impurities from pulp discharged from the pulp tank, the pulp tank is communicated with the good pulp output end of the first high-concentration slag remover for storing good pulp, the input end of the slag settling tank is communicated with the tailings output end of the first high-concentration slag remover for precipitating heavy slag, the slag extractor is communicated with the heavy slag output end of the slag settling tank for removing heavy slag, the input end of the second high-concentration slag remover is communicated with the pulp output end of the slag settling tank for removing the heavy impurities again, the secondary good pulp output end of the second high-concentration slag remover is communicated with the pulp tank for removing the heavy impurities again to the second high-concentration slag remover, and the high-concentration slag extractor is communicated with the second high-concentration slag extractor for removing the heavy slag.
In the drum pulping device, the height difference between the front ends of the second chain plate machine and the third chain plate machine is in the range of 1-1.5 meters, and the height difference between the rear end of the first chain plate machine and the second chain plate machine is in the range of 1-1.5 meters.
In the drum pulping device, a nucleon scale for weighing waste paper to control the white water addition amount is arranged on the third chain plate machine.
In the rotary drum pulping device, the rear end of the rotary drum is provided with the belt conveyor for conveying tailings to the packer.
A pulping method of a drum pulping apparatus as described above, comprising the steps of:
a: the waste paper is dispersed, the domestic OCC waste paper is conveyed to a first chain plate machine, the first chain plate machine conveys the waste paper to the high position towards the rear end, then the waste paper falls to a second chain plate machine to disperse the waste paper, then the second chain plate machine conveys the dispersed waste paper to the rear end and falls to a third chain plate machine, and the third chain plate machine, the second chain plate machine and the first chain plate machine are controlled by differential speed so that the third chain plate machine can convey dispersed and uniform waste paper raw materials to the high position at the rear end and put the waste paper raw materials into a rotary drum pulper;
b: crushing, namely adding white water into a crushing area through a white water adding port, driving a crushing cutter to rotate by rotating a rotary drum, repeatedly increasing waste paper in the rotary drum and falling the waste paper onto the crushing cutter, so as to crush waste paper raw materials into pulp, and simultaneously pushing the pulp crushed into pulp to a screening area under the stirring action of the crushing cutter, wherein the adding amount of the white water can be adjusted according to the weight of the waste paper weighed by a nucleon weighing machine on a third chain plate machine;
C: screening, wherein a white water adding device adds white water to a screening area, a rotary drum rotates to enable slurry to be discharged into a slurry tank from a screen hole, a spiral baffle is driven to rotate to discharge tailings to a belt conveyor, and the white water adding amount can be adjusted according to the weight of waste paper weighed by a nucleon scale on a third chain plate machine;
D: the tailings are packed, and the packer collects and packs the tailings conveyed by the belt conveyor;
E: stirring, wherein the stirring assembly stirs the slurry in the slurry tank.
The pulping method of the drum pulping device, as described above, further comprises the following steps:
F: removing slag in one section, removing heavy impurities from the slurry discharged from the slurry tank by using a first high-concentration slag remover, discharging tailings to a sediment tank, and conveying good slurry into a slurry tank for storage;
G: the sediment tank processes the tailings discharged by the first high-concentration slag remover to further separate heavy slag and good slurry, and discharges the obtained heavy slag to the slag scooping machine, and simultaneously conveys the good slurry to the second high-concentration slag remover;
H: removing slag in the second stage, removing heavy impurities from the precipitated slurry again by using a second high-concentration slag remover, discharging the heavy slag to a slag dragging machine, and refluxing the secondary slurry subjected to heavy impurity removal again into a slurry tank;
i: and fishing out the slag, and fishing out and transporting away the heavy slag discharged by the slag depositing tank and the second high-concentration slag remover by the slag scooper.
Compared with the prior art, the invention has the following technical characteristics:
1. the invention adopts 100% of domestic OCC waste paper as the production raw material to replace the waste paper of the American AOCC and European EOCC as the raw material for pulping, and basically avoids imported ocean garbage.
2. According to the invention, the domestic waste paper OCC is dispersed through the rotary drum pulper, the rotary drum pulper mainly disperses the waste paper OCC by means of the gravity of the waste paper, waste paper fibers are dispersed in a disintegration area, the fibers and plastic sheets are not subjected to cutting action, the fiber length is long, the physical strength of raw paper is ensured, the cutting action of the hydraulic pulper on the waste paper and the disintegration action of impurities are solved, the original strength of the fibers are kept, then, large impurities such as plastics are mostly removed in the initial stage in a screening area, the pulp enters a pulp tank through a screen hole, the fiber length is kept as much as possible, the concentration is controlled to be about 4.0-5.0%, the strength of the fibers is ensured not to be degraded any more, and the processing load of the subsequent working section is reduced because the plastic film is not cut off.
3. The thick liquids after the disintegration and preliminary screening are removed heavy impurities such as coarser iron nails, gravel and the like through a combined two-section high-concentration slag remover, the heavy impurities are collected in a sediment tank, the bottom of the sediment tank is discharged through two pneumatic gate valves, heavy slag is intermittently discharged through a slag scooping machine, and the thick liquids above the sediment tank are circularly treated through the high-concentration slag remover. The high-concentration slag remover, the slag depositing tank and the slag dragging machine are combined to remove heavy impurities, so that the removal efficiency is high, and the fiber loss is less.
4. And uniformly dispersing and delivering the whole bundle of waste paper OCC to a rotary drum pulper by utilizing the height difference and the speed difference among the first chain plate machine, the second chain plate machine and the third chain plate machine.
[ Description of the drawings ]
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic view of a drum pulper according to the present invention;
FIG. 2 is a schematic view of a link plate assembly according to the present invention;
Fig. 3 is a schematic structural view of the discharging assembly according to the present invention.
[ Detailed description ] of the invention
A rotary drum pulping apparatus comprises a chain plate unit 1 for conveying and dispersing domestic OCC waste paper and a rotary drum pulper 2 for making the dispersed domestic OCC waste paper into pulp, wherein the rotary drum pulper 2 comprises a rotary drum 21 and a pulp tank 22 arranged at the rear lower part of the rotary drum 21, the front end of the rotary drum 21 is provided with a white water adding port 23, the front part and the rear part of the rotary drum 21 are respectively provided with a crushing zone 24 and a screening zone 25, the crushing zone 24 is provided with crushing blades (not shown in the figure) which are arranged at intervals along the inner side wall of the rotary drum 21 in a spiral manner, the crushing blades can rotate along the rotary drum 21 to crush waste paper raw materials into pulp and push the crushed pulp to the screening zone 25, a white water adding device 26 for adding the pulp to the screening zone 25 is arranged in the rotary drum 21, the screening zone 25 is provided with a screen mesh 251 which is arranged along the circumference of the rotary drum 21 and is used for discharging the pulp into the pulp tank 22The screening zone 25 is also provided with helical baffles arranged at intervals along the inner side wall of the rotary drum 21 in a helical manner for discharging tailings to the rear end, the rear end of the rotary drum 21 is provided with a packer 3 for collecting tailings, and a stirring assembly 4 for stirring the slurry is arranged in the slurry tank 22.
The chain plate unit 1 comprises a first chain plate machine 11, a second chain plate machine 12 and a third chain plate machine 13, wherein the first chain plate machine 11 and the third chain plate machine 13 are low in front end and high in rear end, the second chain plate machine 12 is horizontally arranged, and the height of the second chain plate machine 12 is higher than that of the front end of the third chain plate machine 13 and lower than that of the rear end of the first chain plate machine 11.
The operating speed of the second plate conveyor 12 is greater than the operating speed of the first plate conveyor 11 and less than the operating speed of the third plate conveyor 13.
The rotary drum pulping device further comprises a discharging component 5, the discharging component 5 comprises a first high-concentration slag remover 51, a second high-concentration slag remover 52, a pulp tank 53, a sediment tank 54 and a slag extractor 55, the input end of the first high-concentration slag remover 51 is communicated with the bottom of the pulp tank 22 for removing heavy impurities from the pulp discharged from the pulp tank 22, the pulp tank 53 is communicated with the good pulp output end of the first high-concentration slag remover 51 for storing good pulp, the input end of the sediment tank 54 is communicated with the tailings output end of the first high-concentration slag remover 51 for precipitating heavy slag, the slag extractor 55 is communicated with the heavy slag output end of the sediment tank 54 for extracting heavy slag, the input end of the second high-concentration slag remover 52 is communicated with the pulp output end of the sediment tank 54 for removing heavy impurities again, the secondary good pulp output end of the second high-concentration slag remover 52 is communicated with the pulp tank 22 for enabling the secondary pulp removed again to flow back to the pulp tank 22 after the heavy impurities are extracted again, and the slag extractor 55 is communicated with the second high-concentration slag extractor 52 to obtain heavy slag from the high-concentration slag extractor 52.
The difference in height between the second link plate 12 and the front end of the third link plate 13 is in the range of 1 meter to 1.5 meters, and the difference in height between the rear end of the first link plate 11 and the second link plate 12 is in the range of 1 meter to 1.5 meters.
The third plate conveyor 13 is provided with a nucleon balance 131 for weighing the used paper to control the white water addition amount. The addition amount of the used paper is controlled by the nucleon balance 131, and the white water addition amount of the white water adding device 26 is controlled, so that the breaking concentration of the used paper is controlled to be 15-20%, and the screening concentration is controlled to be 4.0-5.0%.
The rear end of the drum 21 is provided with a belt conveyor 31 for conveying tailings to the baler 3.
The pulping method of the drum pulping device comprises the following steps:
A: waste paper is dispersed, domestic OCC waste paper is conveyed to the first chain plate machine 11, the first chain plate machine 11 conveys the waste paper to the high position towards the rear end, then the waste paper falls onto the second chain plate machine 12 to disperse the waste paper, then the second chain plate machine 12 conveys the dispersed waste paper to the rear end and falls onto the third chain plate machine 13, and the third chain plate machine 13, the second chain plate machine 12 and the first chain plate machine 11 are controlled by differential speed so that the third chain plate machine 13 can convey dispersed and uniform waste paper raw materials to the high position at the rear end and put into the rotary drum pulper 2;
b: crushing, namely adding white water into a crushing zone 24 through a white water adding port 23, driving a crushing cutter to rotate by rotating a rotary drum 21, repeatedly lifting waste paper in the rotary drum 21 and falling the waste paper onto the crushing cutter, so as to crush waste paper raw materials into pulp, and simultaneously pushing the pulp crushed into pulp into a screening zone 25 under the stirring action of the crushing cutter, wherein the white water adding amount can be adjusted according to the weight of the waste paper weighed by a nucleon weighing 131 on a third plate conveyor 13;
C: screening, the white water adding device 26 adds white water to the screening area 25, the rotary drum 21 rotates to enable the pulp to be discharged into the pulp tank 22 from the screen holes 251, and meanwhile, the spiral baffle is driven to rotate to discharge tailings to the belt conveyor 31, and the white water adding amount can be adjusted according to the weight of waste paper weighed by the nucleon weighing on the third plate conveyor 13;
d: the tailings are packed, and the packer 3 collects and packs the tailings conveyed by the belt conveyor 31;
E: the stirring assembly 4 stirs the slurry in the slurry tank 22.
The pulping method of the drum pulping device further comprises the following steps:
F: the first high-concentration slag remover 51 removes heavy impurities from the slurry discharged from the slurry tank 22, and discharges tailings to a sediment tank 54, and simultaneously conveys the good slurry to a slurry tank 53 for storage;
G: the sediment tank 54 processes the tailings discharged from the first high concentration slag separator 51 to further separate heavy slag and good slurry, and discharges the obtained heavy slag to the slag conveyor 55 while conveying the good slurry to the second high concentration slag separator 52;
H: the second stage deslagging, the second high-concentration deslagging device 52 removes the heavy impurities again from the precipitated slurry, and discharges the heavy slag to the slag conveyor 55, and the secondary slurry after the heavy impurities are removed again is refluxed into the slurry tank 22 again;
I: the slag is fished out, and the slag scooping machine 55 scoops out and conveys away the heavy slag discharged from the slag pot 54 and the second high concentration slag separator 52.
Claims (6)
1. A rotary drum pulping device is characterized by comprising a chain plate unit (1) for conveying and dispersing domestic OCC waste paper and a rotary drum pulper (2) for pulping the dispersed domestic OCC waste paper, wherein the rotary drum pulper (2) comprises a rotary drum (21) and a pulp tank (22) arranged at the rear lower part of the rotary drum (21), the front end of the rotary drum (21) is provided with a white water adding port (23), the front part and the rear part of the rotary drum (21) are respectively provided with a crushing zone (24) and a screening zone (25), the crushing zone (24) is provided with crushing blades which are arranged at intervals along the inner side wall of the rotary drum (21) in a spiral way, the crushing blades can rotate along the rotary drum (21) to crush waste paper raw materials into pulp and push the crushed pulp to the screening zone (25), a white water adding device (26) for adding white water to the screening zone (25) is arranged in the rotary drum (21), the screening zone (25) is provided with a crushing zone (24) and a filter mesh-shaped baffle plate (251) which is arranged at intervals along the periphery of the rotary drum (21) and is arranged at the rear side wall of the rotary drum (21) and is provided with a tail end (21) for collecting tail end of the tail end (21), a stirring assembly (4) for stirring the slurry is arranged in the slurry tank (22);
The chain plate unit (1) comprises a first chain plate machine (11), a second chain plate machine (12) and a third chain plate machine (13), wherein the first chain plate machine (11) and the third chain plate machine (13) are low in front end and high in rear end, the second chain plate machine (12) is horizontally arranged, and the height of the second chain plate machine (12) is higher than that of the front end of the third chain plate machine (13) and lower than that of the rear end of the first chain plate machine (11);
The high-concentration slag remover comprises a slag extractor (52), a slag extractor (55) and a slag separator (52), wherein the slag extractor (55) is used for extracting heavy slag from the slag in the slag extractor (52), the slag extractor (54) is used for extracting heavy slag from the slag in the slag extractor (22), the slag extractor (52) is used for extracting heavy slag from the slag in the slag extractor (22), the slag extractor (55) is used for extracting heavy slag from the slag in the slag extractor (52), and the slag extractor (52) is used for extracting heavy slag from the slag in the slag extractor (22), and the slag extractor (52) is used for extracting heavy slag in the slag extractor (52) and extracting heavy slag in the slag extractor (52);
The rear end of the rotary drum (21) is provided with a belt conveyor (31) for conveying tailings to the packer (3).
2. A drum pulping apparatus according to claim 1, characterized in that the operating speed of the second plate conveyor (12) is greater than the operating speed of the first plate conveyor (11) and less than the operating speed of the third plate conveyor (13).
3. A drum pulping apparatus according to claim 1 or 2, characterized in that the height difference between the second (12) and the third (13) front end is in the range of 1 to 1.5 meters, and the height difference between the first (11) rear end and the second (12) chain plate is in the range of 1 to 1.5 meters.
4. A drum pulping apparatus according to claim 3, characterized in that a nucleon scale (131) for weighing waste paper to control the white water addition is provided on the third plate conveyor (13).
5. A pulping method of a drum pulping apparatus as claimed in any one of claims 1 to 4, characterized by comprising the steps of:
A: waste paper is dispersed, domestic OCC waste paper is conveyed to a first chain plate machine (11), the first chain plate machine (11) conveys waste paper to the rear end to a high position, then the waste paper falls onto a second chain plate machine (12) to disperse the waste paper, then the second chain plate machine (12) conveys the dispersed waste paper to the rear end and falls onto a third chain plate machine (13), and differential speed control is adopted among the third chain plate machine (13), the second chain plate machine (12) and the first chain plate machine (11) so that the third chain plate machine (13) can convey dispersed and uniform waste paper raw materials to the rear end high position and put the waste paper raw materials into a rotary drum pulper (2);
B: crushing, namely adding white water into a crushing zone (24) through a white water adding port (23), driving a crushing cutter to rotate by rotating a rotary drum (21), repeatedly lifting waste paper in the rotary drum (21) and falling the waste paper onto the crushing cutter, so as to crush waste paper raw materials into pulp, and simultaneously pushing the pulp crushed into pulp into a screening zone (25) under the stirring action of the crushing cutter, wherein the white water adding amount can be adjusted according to the weight of the waste paper weighed by a nucleon scale on a third chain plate machine (13);
c: screening, adding white water to a screening area (25) by a white water adding device (26), rotating a rotary drum (21) to enable slurry to be discharged into a slurry tank (22) from a screen hole (251), and simultaneously driving a spiral baffle to rotate so as to discharge tailings to a belt conveyor (31), wherein the white water adding amount can be adjusted according to the weight of waste paper weighed by a nucleon weighing device on a third chain plate machine (13);
d: the tailings are packed, and the packer (3) collects and packs the tailings conveyed by the belt conveyor (31);
e: the stirring assembly (4) stirs the slurry in the slurry tank (22).
6. A method of pulping in a rotary drum pulping apparatus of claim 5, further comprising the steps of:
F: removing slag in one section, removing heavy impurities from the slurry discharged from a slurry tank (22) by a first high-concentration slag remover (51), discharging tailings to a sediment tank (54), and conveying the good slurry into a slurry tank (53) for storage;
G: the sediment tank (54) processes the tailings discharged from the first high-concentration slag separator (51) to further separate heavy slag and good slurry, and discharges the obtained heavy slag to the slag dragging machine (55) and simultaneously conveys the good slurry to the second high-concentration slag separator (52);
H: removing slag in the second stage, removing heavy impurities from the precipitated good pulp again by a second high-concentration slag remover (52), discharging the heavy slag to a slag conveyor (55), and refluxing the secondary good pulp subjected to heavy impurity removal again into a pulp tank (22);
I: and (3) fishing out the slag, and fishing out and carrying away heavy slag discharged by the slag depositing tank (54) and the second high-concentration slag remover (52) by a slag scooper (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911337412.3A CN111005248B (en) | 2019-12-23 | 2019-12-23 | Drum pulping device and pulping method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911337412.3A CN111005248B (en) | 2019-12-23 | 2019-12-23 | Drum pulping device and pulping method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111005248A CN111005248A (en) | 2020-04-14 |
| CN111005248B true CN111005248B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911337412.3A Active CN111005248B (en) | 2019-12-23 | 2019-12-23 | Drum pulping device and pulping method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111005248B (en) |
Citations (6)
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| JP2009057645A (en) * | 2007-08-30 | 2009-03-19 | Daio Paper Corp | Recycled pulp and its manufacturing method |
| JP2009150046A (en) * | 2009-03-06 | 2009-07-09 | Daio Paper Corp | Waste paper pulp |
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| CN111005248A (en) | 2020-04-14 |
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