CN111962321A - Papermaking solid waste washing system and washing method thereof - Google Patents
Papermaking solid waste washing system and washing method thereof Download PDFInfo
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- CN111962321A CN111962321A CN202010879312.XA CN202010879312A CN111962321A CN 111962321 A CN111962321 A CN 111962321A CN 202010879312 A CN202010879312 A CN 202010879312A CN 111962321 A CN111962321 A CN 111962321A
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- shredder
- conveyor
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- 239000002910 solid waste Substances 0.000 title claims abstract description 61
- 238000005406 washing Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 110
- 238000012216 screening Methods 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 claims description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 238000007790 scraping Methods 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 12
- 230000008961 swelling Effects 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 229920001131 Pulp (paper) Polymers 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 230000006378 damage Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 239000013049 sediment Substances 0.000 description 11
- 230000005484 gravity Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 206010024796 Logorrhoea Diseases 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000006148 magnetic separator Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
-
- 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
- D21B1/10—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 by cutting actions
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- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Paper (AREA)
Abstract
The invention relates to a papermaking solid waste washing system and a washing method thereof, wherein the papermaking solid waste washing system comprises a shredder, a paper-plastic separator, a rinsing separator and a drier which are sequentially arranged, a first conveyor and a second conveyor are respectively arranged at an inlet and an outlet of the shredder, and a bouncing separator and a third conveyor are sequentially arranged between the first conveyor and the shredder; the bouncing separator comprises a rack, a screen body, a hood and a fan; the screen body is obliquely arranged and mounted on the frame and used for performing vibration screening separation on papermaking solid wastes; the hood is arranged on the frame and covers the sieve body; the fan is arranged at one end of the hood and used for blowing light materials in the papermaking solid waste to the higher end of the screen body; the third conveyor is close to the higher end of the screen body and is used for conveying light materials in the papermaking solid wastes into the shredder. The invention can improve the defect that the traditional shredder blade is easy to damage.
Description
Technical Field
The invention relates to the technical field of papermaking solid waste washing lines, in particular to a papermaking solid waste washing system and a washing method thereof.
Background
At present, the general flow of a washing line for papermaking solid waste is as follows: the method comprises the following steps that waste residue raw materials are conveyed to a double-shaft shredder through a belt conveyor to be shredded, meanwhile, a magnetic separator is installed at the release position of the belt conveyor and used for removing iron materials in the raw materials, the shredded materials enter a paper-plastic separator through the belt conveyor, washing water is added into the paper-plastic separator, paper pulp in the materials is peeled off through high-speed rotation so as to be further recycled, then the materials enter a rinsing separator, under the stirring of washing and a shifting wheel, light plastic skins in the materials float on the water surface, heavy objects sink to the water bottom, and the plastic skins overflow to a spin dryer to be dehydrated, so that the cleaning process is completed.
The existing material washing line process flow has unsatisfactory effect in actual operation, firstly, a magnetic separator can only absorb iron materials with small volume and can only absorb the iron materials on the surface layer of the materials, the iron materials in the magnetic separator cannot be absorbed, the iron materials with large volume cannot be absorbed at all, and the iron materials enter a shredder and easily cause damage to blades of the shredder; moreover, the materials are cut by the shredder and then directly fed into a plastic separator, so that the materials cannot be fully moistened and swelled, and the pulp extraction effect is influenced due to insufficient pulp washing; in addition, the plastic skin and the heavy object in the rinsing separator can not be separated sufficiently, and part of the plastic skin sinks into the bottom of the pool along with the heavy object, so that waste is caused.
Disclosure of Invention
Aiming at the defects in the prior art, one of the technical problems to be solved by the invention is to provide a solid waste washing system for papermaking, so as to overcome the defect that the traditional shredder blade is easy to damage.
The second technical problem to be solved by the invention is to provide a material washing method of a papermaking solid waste material washing system, which can overcome the defects that the traditional shredder blade is easy to damage, the pulp extracting effect of a paper-plastic separator is poor and the bottom sediment of a rinsing separator has more plastic skins.
In order to solve one of the technical problems, the invention provides a papermaking solid waste washing system which comprises a shredder, a paper-plastic separator, a rinsing separator and a drying machine which are sequentially arranged, wherein a first conveyor and a second conveyor are respectively arranged at an inlet and an outlet of the shredder, and a bouncing separator and a third conveyor are sequentially arranged between the first conveyor and the shredder; the bouncing separator comprises a rack, a screen body, a hood and a fan; the screen body is obliquely arranged and mounted on the frame and used for performing vibration screening separation on papermaking solid wastes; the hood is arranged on the frame and covers the sieve body; the fan is arranged at one end of the hood and used for blowing light materials in the papermaking solid waste to the higher end of the screen body; the third conveyor is close to the higher end of the screen body and is used for conveying light materials in the papermaking solid wastes into the shredder.
In the invention, the first conveyor conveys the solid waste of papermaking into the bounce separator, the solid waste of papermaking circularly vibrates along with the screen body, the principle is similar to that of a dustpan, because the screen body is obliquely arranged, heavy materials (such as iron blocks and the like) in the materials move towards the lower end of the screen body, crushed materials (such as silt and the like) fall through the screen holes, one end of the hood is provided with a fan, and light materials are blown to the higher end of the screen body by wind power. Therefore, the bouncing separator can be used for screening the solid wastes of the paper making machine, so that heavy materials, light materials and crushed materials in the solid wastes of the paper making machine are separated, and only the light materials are conveyed into the shredder through the third conveyor for shredding treatment, so that the damage of the heavy materials to the blades of the shredder and the abrasion of the crushed materials to the blades of the shredder can be effectively prevented, and the service life of the blades of the shredder can be prolonged.
Preferably, the bouncing separator further comprises a base, a first connecting part and a second connecting part are oppositely arranged at the front and the back of the bottom of the rack, the first connecting part is hinged to the base, and the second connecting part is fixed on the base through a height adjusting part; the height adjusting piece comprises a support and a lock pin, the lower end of the support is fixed on the base, a plurality of gradient adjusting holes are formed in the support, fixing holes are formed in the second connecting portion, and the lock pin penetrates through the positioning hole and the gradient adjusting holes with the corresponding heights to position the second connecting portion. The second connecting portion are positioned in the slope adjusting holes with different heights on the support through the lock pins, so that the inclination angle of the screen body can be adjusted, and the screen body is simple and stable in structure and convenient to adjust.
Preferably, the screen body comprises a screen frame which is supported and fixed on the frame through a spring, a screen plate which is fixed in the screen frame, and a vibrating screen mechanism which is used for driving the screen frame to vibrate; a plurality of support frames are arranged on two sides of the screen frame, and a spring is arranged between each support frame and the frame; the vibrating screen mechanism comprises at least one group of vibrating screen unit, and the vibrating screen unit comprises two bearing seats respectively fixed on two sides of the screen frame, an eccentric shaft rotatably mounted between the two bearing seats and a speed reduction motor for driving the eccentric shaft to rotate. The eccentric shaft is driven to rotate by the speed reducing motor, so that the screen body can be driven to do circular vibration, and during screening, papermaking solid wastes do circular motion on the screen plate.
Preferably, a rotating pool is further arranged between the second conveyor and the paper-plastic separator, and the second conveyor is used for conveying the materials discharged by the shredder into the rotating pool; the rotary pool comprises an outer shell and an inner core which are coaxially arranged, and an annular cylindrical water storage cavity is formed between the outer shell and the inner core; the shell is provided with a water inlet which is arranged along the secant direction of the shell and is far away from the inner core, so that water rotates around the inner core in the water storage cavity; the shell is also provided with an overflow port which is lower than the water inlet and is positioned above the feed inlet of the paper-plastic separator. Materials cut by the shredder enter the rotating tank and rotate along with water flow, impurities with large specific gravity sink to the bottom of the tank in the rotating process, and light materials overflow from an overflow port along with water and enter the paper-plastic separator; in addition, the materials are fully contacted with water and fully swelled in the rotating pool, so that the pulp and the plastic skin are fully separated in the paper-plastic separator, and the pulp extracting effect is improved.
Preferably, the papermaking solid waste washing system further comprises a fourth conveyor, wherein the crushed materials in the papermaking solid waste can pass through the screen body and fall onto the fourth conveyor, and the crushed materials in the papermaking solid waste are conveyed to the second conveyor by the fourth conveyor, so that the pulp and the plastic skin in the crushed materials can be recycled.
Preferably, a distance is reserved between the bottom of the inner core and the bottom wall of the outer shell, and the top of the inner core is fixedly connected with the top of the outer shell; a slag collecting port is arranged on the bottom wall of the shell, and the bottom of the slag collecting port is connected with a slag collecting chamber; the rotary pool further comprises a slag lifting machine, and the bottom of the slag lifting machine extends into the slag collecting chamber. After the impurities with larger specific gravity are sunk into the bottom of the pool, the impurities can enter the slag collecting chamber through the slag collecting port and are discharged by the slag extracting machine.
Preferably, a slag scraping plate is further arranged between the bottom wall of the outer shell and the bottom of the inner core, and the bottom of the slag scraping plate is in contact with the bottom wall of the outer shell; and a first driving mechanism for driving the slag scraping plate to rotate is arranged below the shell. The scum board can scrape sediment attached to the bottom wall of the shell into the sediment collecting chamber in the rotating process, so that the sediment is prevented from being accumulated on the bottom wall of the shell.
Preferably, the slag scraping plate comprises a material distributing plate which is in a shape of a cone with a small top and a big bottom, the bottom of the material distributing plate is close to the slag collecting port, and a plurality of scraping strips are arranged on the periphery of the material distributing plate. The design of branch flitch can play the water conservancy diversion effect, introduces the effect scope of scraping the strip with sediment to scrape into the sediment chamber with most of sediment.
Preferably, a scattering machine is further arranged at the top of the rotary pool, the scattering machine comprises a scattering roller and a second driving mechanism for driving the scattering roller to rotate, a plurality of scattering blades are arranged on the periphery of the scattering roller, two ends of the scattering roller are provided with supports, and the two supports are respectively arranged at the tops of the inner core and the outer shell; the tangential direction of the rotation direction of the scattering roller is consistent with the tangential direction of the flow direction of the water in the rotating pool. The design of the scattering machine can help water flow to smoothly rotate on the one hand, and on the other hand can scatter materials, so that impurities with large specific gravity in the materials are smoothly separated from plastic skins and sink to the bottom of the tank.
In order to solve the second technical problem, the invention provides a washing method of a papermaking solid waste washing system, which comprises the following steps: a screening step: the bouncing separator is used for screening the papermaking solid waste, so that heavy materials in the papermaking solid waste are discharged from the lower side of the screen body, light materials are discharged from the higher side of the screen body, and crushed materials passing through the screen body are collected; shredding: the shredder is used for shredding the light materials; a swelling separation step: the materials discharged by the shredder and the crushed materials passing through the screen body enter the rotating tank for swelling separation, so that heavier impurities sink into the bottom of the shell, and lighter plastic skins overflow to the paper-plastic separator from the overflow port; paper-plastic separation: the paper-plastic separator separates paper pulp from plastic skins; plastic cleaning: the rinsing separator is used for cleaning the plastic skins, and the cleaned plastic skins are conveyed into the spin dryer for dehydration.
Compared with the traditional solid waste washing method for papermaking, the washing method for the solid waste washing system for papermaking adds a screening step and a swelling separation step, wherein the screening step can separate heavy materials, light materials and crushed materials in the solid waste for papermaking, only the light materials are sent into a shredder for shredding, and the heavy materials and the crushed materials can be effectively prevented from damaging and wearing blades of the shredder; crushed materials passing through a screen body of the bouncing separator and materials treated by the shredder enter a rotating pool together, can fully contact with water to be fully swelled, the materials rotate together with the water, impurities with higher specific gravity in the materials can sink to the bottom of the pool, plastic skins with lower specific gravity can overflow together with the water to enter a paper-plastic separator, and after full swelling, the plastic skins and pulp can be fully separated, so that the pulp extracting effect of the paper-plastic separator is improved; due to the design of the rotary pool, materials are fully contacted with water, the separation of heavy objects and plastic skins in the rinsing separator is facilitated, and the defect that the plastic skins are more in sediment residues of the rinsing separator in the traditional process is overcome.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of a papermaking solid waste washing system according to an embodiment of the present invention;
FIG. 2 is a block flow diagram of a papermaking solid waste washing system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a bouncing separator according to an embodiment of the invention;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a schematic structural view of a screen body according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
FIG. 7 is a schematic structural diagram of an eccentric shaft according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view B-B of FIG. 7;
FIG. 9 is a front view of a spin cell of an embodiment of the present invention;
FIG. 10 is a top view of a spin cell according to an embodiment of the present invention;
FIG. 11 is a side view of a breaker roll of an embodiment of the present invention.
Description of the drawings:
1-a first conveyor; 2-bouncing separator; 3-a third conveyor; 4-a shredder; 5-a second conveyor; 6-rotating the pool; 7-paper-plastic separator; 8-rinsing the separator; 9-a drying machine; 10-a fourth conveyor;
21-a frame; 22-a sieve body; 23-a hood; 24-a fan; 25-a base; 61-a housing; 62-an inner core; 63-a slag collection chamber; 64-a scraper plate; 65-a first drive mechanism; 66-slag extracting machine; 67-a breaker;
211-a first connection; 212-a second connection; 221-a screen frame; 222-a sieve plate; 223-a spring; 224 a support frame; 225-a bearing seat; 226-an eccentric shaft; 227-a gear motor; 228-universal coupling; 251-a bracket; 252-grade adjustment holes; 611-a water inlet; 612-an overflow port; 613-slag collection port; 641-material distributing plate; 642-bar scraping; 671-break up rolls; 672-a second drive mechanism; 673-breaking up the leaves.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 and fig. 2, the present embodiment provides a solid waste washing system for papermaking, which includes a first conveyor 1, a bouncing separator 2, a third conveyor 3, a shredder 4, a second conveyor 5, a rotary tank 6, a paper-plastic separator 7, a rinsing separator 8, and a spin dryer 9, which are sequentially arranged. The working process of the material washing system is as follows: the solid waste of papermaking is conveyed into a bouncing separator 2 through a first conveyor 1, the bouncing separator 2 screens the solid waste of papermaking, so that three phases of heavy materials, light materials and crushed materials in the solid waste of papermaking are separated, wherein the light materials are conveyed into a shredder 4 through a third conveyor 3, are shredded by the shredder 4 and are conveyed into a rotary pool 6 through a second conveyor 5, and are fully contacted and swelled with water in the rotary pool 6, so that impurities with high specific gravity in the materials are sunk to the bottom of the pool, plastic skins with low specific gravity overflow into a paper-plastic separator 7 along with water, the paper pulp and the plastic skins are fully separated in the paper-plastic separator 7, the separated paper pulp is recycled, and the plastic skins are conveyed into a rinsing separator 8 for further cleaning and separation and then conveyed into a spin dryer 9 for dehydration. And finishing the material washing process. In addition, the papermaking solid waste washing system of the embodiment further comprises a fourth conveyor 10, so as to convey the crushed materials separated by the bouncing separator 2 to the second conveyor 5, and convey the crushed materials and the materials discharged by the shredder 4 into the rotary tank 6 for subsequent treatment.
In this embodiment, the first conveyor 1, the second conveyor 5, the third conveyor 3 and the fourth conveyor 10 are belt conveyors commonly used in the art, and the shredder 4, the paper-plastic separator 7, the rinsing separator 8 and the spin dryer 9 are also commonly used in the existing material washing line.
As shown in fig. 3-8, the bouncing separator 2 is a schematic structural diagram, and the bouncing separator 2 includes a frame 21, a screen 22, a hood 23, and a fan 24, where the frame 21 is formed by welding profiles, and the screen 22 is obliquely arranged and mounted on the frame 21 for performing vibration screening separation on solid wastes in papermaking. The hood 23 is formed by welding steel plates and section bars, the upper part of the hood 23 is provided with a feed inlet, and the top of the first conveyor 1 is positioned above the feed inlet; the hood 23 is mounted on the frame 21 and covers the screen 22; the blower 24 is disposed at one end of the hood 23, and is used for blowing the light materials in the solid waste of paper making to the higher end of the screen 22, and the blower 24 is preferably an axial flow blower. The solid waste of papermaking gets into bounce separating centrifuge 2 through first conveyer 1, the solid waste of papermaking is along with screen frame 22 is the circular vibration, similar dustpan principle, because screen frame 22 slope sets up, heavy material (like iron plate etc.) in the material moves toward the lower one end of screen frame 22, garrulous thing (like silt etc.) falls through the sieve mesh, install fan 24 in the one end of aircraft bonnet 23, lean on wind-force with light material to the higher one end of screen frame 22, make the heavy material in the solid waste of papermaking, light material and garrulous thing separation, only carry the light material to shredder 4 interior shredding processes through third conveyer 3, can effectively prevent the destruction of heavy material to the blade of shredder, and the wearing and tearing of garrulous thing to the shredder blade, can improve the life of shredder blade.
The bouncing separator 2 further comprises a base 25, a first connecting portion 211 and a second connecting portion 212 are oppositely arranged at the front and back of the bottom of the frame 21, the first connecting portion 211 is hinged to the base 25, and the second connecting portion 212 is fixed on the base 25 through a height adjusting piece, so that the included angle between the frame 21 and the base 25 can be adjusted through the height adjusting piece, and the inclination angle of the screen body 22 can be adjusted. Referring to fig. 3, the height adjusting member includes a bracket 251 and a locking pin (not shown), the lower end of the bracket 251 is fixed on the base 25, the bracket 251 is provided with a plurality of slope adjusting holes 252, the second connecting portion 212 is provided with a fixing hole (not shown), the locking pin passes through the positioning hole and the slope adjusting hole 252 with a corresponding height to position the second connecting portion 212, the second connecting portion 212 is positioned on the bracket 251 through the locking pin at the slope adjusting holes 252 with different heights, so that the adjustment of the inclination angle of the sieve body 22 can be realized, and the height adjusting member has a simple and stable structure, and is convenient to adjust.
Referring to fig. 3, 5 and 6, the screen body 22 includes a screen frame 221 supported and fixed on the frame 21 by a spring 223, a screen plate 222 fixed in the screen frame 221, and a vibrating screen mechanism for driving the screen frame 221 to vibrate, specifically, a plurality of support frames 224 are provided at both sides of the screen frame 221, and a spring 223 is installed between each support frame 224 and the frame 21.
In this embodiment, the above-mentioned vibrating and screening mechanism specifically includes at least one set of vibrating and screening units, "at least one set of vibrating and screening units" means that the vibrating and screening units may be set as one set, two sets, or even multiple sets, and each set of vibrating and screening units includes two bearing blocks 225 respectively fixed to two sides of the screen frame 221, an eccentric shaft 226 rotatably installed between the two bearing blocks 225, and a reduction motor 227 for driving the eccentric shaft 226 to rotate, and the eccentric shaft 226 is driven to rotate by the reduction motor 227, so that the screen body 22 can be driven to make circular vibration, and during screening, the papermaking solid waste makes circular motion on the screen plate 222. Specifically, the two vibrating screen units are provided, and the speed reduction motors 227 of the two vibrating screen units are synchronized to ensure that the eccentric forces generated when the two eccentric shafts 226 rotate are synchronized. More specifically, the gear motor 227 is fixedly installed at one side of the frame 21, and an output shaft of the gear motor 227 is connected with one end of the eccentric shaft 226 through the universal joint 228, so that reliable transmission between the gear motor 227 and the eccentric shaft 226 is ensured in the vibrating process of the screen body 22.
As shown in fig. 9, 10 and 11, which are schematic structural views of the rotary pond 6, the rotary pond 6 comprises an outer shell 61 and an inner core 62 which are coaxially arranged, and an annular cylindrical water storage cavity is formed between the outer shell 61 and the inner core 62; a water inlet 611 is arranged on the shell 61, the water inlet 611 is arranged along the secant direction of the shell 61, and the water inlet 611 is far away from the inner core 62, so that water rotates around the inner core 62 in the water storage cavity; an overflow port 612 is further arranged on the shell 61, the overflow port 612 is arranged lower than the water inlet 611, and the overflow port 612 is positioned above the feed inlet of the paper-plastic separator 7. The materials cut by the shredder 4 and the crushed materials screened by the bouncing separator 2 enter a rotary pool 6 through a second conveyor 5, rotate along with water flow, impurities with large specific gravity sink to the bottom of the pool in the rotating process, and light materials overflow from an overflow port 612 along with water to enter a paper-plastic separator 7; in addition, the materials are fully contacted with water and fully swelled in the rotary pool 6, so that the pulp and the plastic skin are fully separated in the paper-plastic separator 7, and the pulp extracting effect is improved.
In this embodiment, a distance is left between the bottom of the inner core 62 and the bottom wall of the outer shell 61, and the top of the inner core 62 is fixedly connected with the top of the outer shell 61 through a plurality of connecting plates; a slag collecting port 613 is arranged on the bottom wall of the shell 61, and a slag collecting chamber 63 is connected to the bottom of the slag collecting port 613; a slag scraping plate 64 is further arranged between the bottom wall of the outer shell 61 and the bottom of the inner core 62, the bottom of the slag scraping plate 64 is in contact with the bottom wall of the outer shell 61, the slag scraping plate 64 specifically comprises a material distributing plate 641, the material distributing plate 641 is in a shape of a cone with a small upper part and a large lower part, the bottom of the material distributing plate 641 is close to the slag collecting port 613, and a plurality of scraping strips 642 are further arranged on the periphery of the material distributing plate 641; a first driving mechanism 65 for driving the scraper plate 64 to rotate is arranged below the housing 61, and the specific structure of the first driving mechanism 65 refers to fig. 9.
The rotating pool 6 further comprises a slag lifting machine 66, the bottom of the slag lifting machine 66 extends into the slag collecting chamber 63, impurities with large specific gravity can be scraped into the slag collecting chamber 63 by a scraping plate 64 after sinking into the pool bottom, and the sediment slag is discharged by the slag lifting machine 66, the slag lifting machine 66 is an existing chain type slag lifting machine, a plurality of scraping plates are vertically welded on a chain of the existing chain type slag lifting machine, and the scraping plates are close to the bottom wall of the slag collecting chamber 63 (refer to fig. 9), so that the scraping plates can smoothly scrape the sediment slag in the slag collecting chamber 63 and discharge the sediment slag.
Further, a scattering machine 67 is arranged on the top of the rotary tank 6, the scattering machine 67 comprises a scattering roller 671 and a second driving mechanism 672 for driving the scattering roller 67 to rotate, the periphery of the scattering roller 671 is provided with a plurality of scattering blades 673, two ends of the scattering roller 671 are provided with supports, the two supports are respectively arranged on the top of the inner core 62 and the top of the outer shell 61, the tangential direction of the rotation direction of the scattering roller 671 is consistent with the tangential direction of the flow direction of the water in the rotary pool 6, referring to fig. 10 and 11, in the embodiment, the water in the rotary pool 6 rotates anticlockwise, the rotating direction of the scattering roller 671 is anticlockwise (seen from the shell to the inner core direction), the design of the scattering machine can help water flow to rotate smoothly on the one hand, and on the other hand, the materials can be scattered to be treated, so that impurities with large specific gravity in the materials are smoothly separated from plastic skins and sink to the bottom of the pool.
The embodiment further provides a washing method of the papermaking solid waste washing system, which comprises the following steps: a screening step: the bounce separator 2 screens the papermaking solid waste, so that heavy materials in the papermaking solid waste are discharged from the lower side of the screen body 22, light materials are discharged from the higher side of the screen body 22, and crushed materials passing through the screen body 22 are collected; shredding: the shredder 4 shreds the light materials; a swelling separation step: the materials discharged by the shredder 4 and the crushed materials passing through the screen body 22 enter the rotary tank 6 for swelling separation, so that heavier impurities sink to the bottom of the shell 61, and lighter plastic skins overflow to the paper-plastic separator 7 from the overflow port 612; paper-plastic separation: the paper-plastic separator 7 separates the paper pulp from the plastic skin; plastic cleaning: the plastic skins are cleaned by a rinsing separator 8, and the cleaned plastic skins are conveyed into a drying machine 9 for dehydration.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present invention, and are intended to be covered by the claims and the specification of the present invention.
Claims (10)
1. The utility model provides a papermaking washes material system useless admittedly, moulds separating centrifuge, rinsing separating centrifuge and drier including shredder, paper that sets gradually the entrance and the exit of shredder are provided with first conveyer and second conveyer, its characterized in that respectively:
a bounce separator and a third conveyor are sequentially arranged between the first conveyor and the shredder;
the bouncing separator comprises a rack, a screen body, a hood and a fan; the screen body is obliquely arranged and mounted on the frame and used for performing vibration screening separation on papermaking solid wastes; the hood is arranged on the frame and covers the sieve body; the fan is arranged at one end of the hood and used for blowing light materials in the papermaking solid waste to the higher end of the screen body;
the third conveyor is close to the higher end of the screen body and is used for conveying light materials in the papermaking solid wastes into the shredder.
2. The papermaking solid waste washing system according to claim 1, characterized in that:
the bouncing separator also comprises a base, a first connecting part and a second connecting part are oppositely arranged at the front and the back of the bottom of the rack, the first connecting part is hinged to the base, and the second connecting part is fixed on the base through a height adjusting part;
the height adjusting piece comprises a support and a lock pin, the lower end of the support is fixed on the base, a plurality of gradient adjusting holes are formed in the support, fixing holes are formed in the second connecting portion, and the lock pin penetrates through the positioning hole and the gradient adjusting holes with the corresponding heights to position the second connecting portion.
3. The papermaking solid waste washing system according to claim 2, characterized in that:
the screen body comprises a screen frame which is supported and fixed on the rack through a spring, a screen plate which is fixed in the screen frame and a vibrating screen mechanism which is used for driving the screen frame to vibrate;
a plurality of support frames are arranged on two sides of the screen frame, and a spring is arranged between each support frame and the frame;
the vibrating screen mechanism comprises at least one group of vibrating screen unit, and the vibrating screen unit comprises two bearing seats respectively fixed on two sides of the screen frame, an eccentric shaft rotatably mounted between the two bearing seats and a speed reduction motor for driving the eccentric shaft to rotate.
4. The papermaking solid waste washing system according to claim 1, characterized in that:
a rotary pool is further arranged between the second conveyor and the paper-plastic separator, and the second conveyor is used for conveying the materials discharged by the shredder into the rotary pool;
the rotary pool comprises an outer shell and an inner core which are coaxially arranged, and an annular cylindrical water storage cavity is formed between the outer shell and the inner core;
the shell is provided with a water inlet which is arranged along the secant direction of the shell and is far away from the inner core, so that water rotates around the inner core in the water storage cavity;
the shell is also provided with an overflow port which is lower than the water inlet and is positioned above the feed inlet of the paper-plastic separator.
5. The papermaking solid waste washing system according to claim 4, characterized in that:
and the fourth conveyor is used for conveying the crushed materials in the solid waste paper-making to the second conveyor.
6. The papermaking solid waste washing system according to claim 4, characterized in that:
a distance is reserved between the bottom of the inner core and the bottom wall of the outer shell, and the top of the inner core is fixedly connected with the top of the outer shell;
a slag collecting port is arranged on the bottom wall of the shell, and the bottom of the slag collecting port is connected with a slag collecting chamber;
the rotary pool further comprises a slag lifting machine, and the bottom of the slag lifting machine extends into the slag collecting chamber.
7. The papermaking solid waste washing system according to claim 6, characterized in that:
a slag scraping plate is further arranged between the bottom wall of the outer shell and the bottom of the inner core, and the bottom of the slag scraping plate is in contact with the bottom wall of the outer shell;
and a first driving mechanism for driving the slag scraping plate to rotate is arranged below the shell.
8. The papermaking solid waste washing system according to claim 7, characterized in that:
the slag scraping plate comprises a material distributing plate, the material distributing plate is in a shape of a cone with a small upper part and a large lower part, the bottom of the material distributing plate is close to the slag collecting port, and a plurality of scraping strips are arranged on the periphery of the material distributing plate.
9. The papermaking solid waste washing system according to claim 4, characterized in that:
the top of the rotary pool is also provided with a scattering machine, the scattering machine comprises a scattering roller and a second driving mechanism for driving the scattering roller to rotate, a plurality of scattering blades are arranged on the periphery of the scattering roller, two ends of the scattering roller are provided with supports, and the two supports are respectively arranged on the tops of the inner core and the outer shell;
the tangential direction of the rotation direction of the scattering roller is consistent with the tangential direction of the flow direction of the water in the rotating pool.
10. The washing method of the papermaking solid waste washing system as claimed in claim 4, characterized by comprising the following steps:
a screening step: the bouncing separator is used for screening the papermaking solid waste, so that heavy materials in the papermaking solid waste are discharged from the lower side of the screen body, light materials are discharged from the higher side of the screen body, and crushed materials passing through the screen body are collected;
shredding: the shredder is used for shredding the light materials;
a swelling separation step: the materials discharged by the shredder and the crushed materials passing through the screen body enter the rotating tank for swelling separation, so that heavier impurities sink into the bottom of the shell, and lighter plastic skins overflow to the paper-plastic separator from the overflow port;
paper-plastic separation: the paper-plastic separator separates paper pulp from plastic skins;
plastic cleaning: the rinsing separator is used for cleaning the plastic skins, and the cleaned plastic skins are conveyed into the spin dryer for dehydration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010879312.XA CN111962321A (en) | 2020-08-27 | 2020-08-27 | Papermaking solid waste washing system and washing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010879312.XA CN111962321A (en) | 2020-08-27 | 2020-08-27 | Papermaking solid waste washing system and washing method thereof |
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| CN111962321A true CN111962321A (en) | 2020-11-20 |
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