CN115463887A - Processing earlier stage processing system is retrieved to abandonment plastics - Google Patents
Processing earlier stage processing system is retrieved to abandonment plastics Download PDFInfo
- Publication number
- CN115463887A CN115463887A CN202211109969.3A CN202211109969A CN115463887A CN 115463887 A CN115463887 A CN 115463887A CN 202211109969 A CN202211109969 A CN 202211109969A CN 115463887 A CN115463887 A CN 115463887A
- Authority
- CN
- China
- Prior art keywords
- washing
- tank
- units
- plastic
- brushes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 141
- 239000004033 plastic Substances 0.000 title claims abstract description 141
- 238000012545 processing Methods 0.000 title claims abstract description 28
- 238000005406 washing Methods 0.000 claims abstract description 161
- 239000007788 liquid Substances 0.000 claims abstract description 96
- 238000004140 cleaning Methods 0.000 claims abstract description 80
- 239000002699 waste material Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000004064 recycling Methods 0.000 claims abstract description 23
- 238000011084 recovery Methods 0.000 claims abstract description 5
- 238000005188 flotation Methods 0.000 claims description 36
- 239000003513 alkali Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- 238000004065 wastewater treatment Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 238000002203 pretreatment Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims 1
- 239000010865 sewage Substances 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 13
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 235000011187 glycerol Nutrition 0.000 description 6
- 239000012670 alkaline solution Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B08B1/12—
-
- B08B1/32—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- 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
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention relates to a waste plastic recovery processing pretreatment system, which comprises a washing mechanism and a liquid conveying mechanism, wherein the washing mechanism comprises a plurality of washing units, a plurality of material moving units and a plurality of collecting units, the washing units are sequentially arranged, two adjacent washing units are communicated through the material moving units to form a channel for conveying plastics, the collecting units and the washing units are arranged in a one-to-one correspondence manner and are used for collecting cleaning liquid discharged when the washing units convey plastics outwards, the liquid conveying mechanism comprises a plurality of backflow pipes, any backflow pipe is communicated with one collecting unit and the previous washing unit, and the cleaning liquid discharged by the current washing unit flows back to the previous washing unit for gradient utilization; the method solves the problems that in the prior treatment technology for recycling waste plastics, when plastics are conveyed among different washing units, water resource consumption is serious, the sewage discharge amount is large, and the sewage treatment pressure is large.
Description
Technical Field
The invention relates to the technical field of waste plastic recovery, in particular to a waste plastic recovery processing pretreatment system.
Background
With the development of the industrial level, plastic products are widely utilized, more and more waste plastics are generated, the treatment of the waste plastics is always a great problem facing the human society, the recycling of the waste plastics is an important way for solving the problem, the recycling of the waste plastics can protect the environment and save resources, the waste plastics are recycled, the waste plastics need to be subjected to early treatment such as crushing, cleaning, dehydration, sorting and the like, and then are processed into regenerated plastic particles, and the waste plastics are prepared into new products through the reprocessing of the regenerated plastic particles, so that the waste plastics can be reused.
In the actual production process, dust, dry glue, oil stain and the like are often attached to recycled waste plastics, paper scraps, metal and other impurities are sometimes mixed among the waste plastics, and the existence of the impurities affects the quality of subsequent granulation processing, so the recycled plastics need to be cleaned before granulation processing, and the recycled plastics need to be cleaned when the impurities are removed because of different types of the impurities, for example, the chinese utility model with the patent application number of CN202122923569.3 proposes a plastic regeneration crushing and cleaning system, which comprises a conveyor, a shredder, a friction cleaning machine, a water washing impurity removal tank, an alkali washing tank, hot air drying and conveying equipment, a label sorting machine and a storage bin which are connected in sequence.
Therefore, in the prior art for the pretreatment of waste plastic recycling, when plastic is transported between different washing units, the water resource consumption is serious, the sewage discharge amount is large, and the sewage treatment pressure is large.
Disclosure of Invention
In view of the above, there is a need to provide a waste plastic recycling and processing pretreatment system, which solves the problems of high pressure of sewage treatment due to the large amount of sewage discharged and the large water resource consumption when transporting plastic between different washing units.
The invention provides a waste plastic recycling and processing pretreatment system which comprises a washing mechanism and a liquid conveying mechanism, wherein the washing mechanism comprises a plurality of washing units, a plurality of material moving units and a plurality of collecting units, the washing units are sequentially arranged, two adjacent washing units are communicated through the material moving units to form a channel for conveying plastics, the collecting units and the washing units are arranged in a one-to-one correspondence manner and are used for collecting cleaning liquid discharged when the washing units convey plastics outwards, the liquid conveying mechanism comprises a plurality of return pipes, any return pipe is communicated with one collecting unit and the previous washing unit, and the cleaning liquid discharged by the current washing unit flows back to the previous washing unit for gradient utilization.
Furthermore, the washing units are three, the three washing units are respectively a flotation tank, an alkaline washing tank and a rinsing tank, the flotation tank, the alkaline washing tank and the rinsing tank are respectively rotatably provided with a stirring plug flow device along two ends of a plastic conveying direction, the stirring plug flow device comprises a rotating shaft and a blade, the rotating shaft is perpendicular to the plastic conveying direction, the axis of the rotating shaft is located at the same level with the liquid level of a cleaning liquid in the tank where the rotating shaft is located, the blade is fixed on the rotating shaft along the axis direction of the rotating shaft, and the blade rotates along with the rotating shaft so as to push the cleaning liquid to flow towards the plastic conveying direction.
Furthermore, a chute is fixedly arranged at one end of each of the flotation tank, the alkali washing tank and the rinsing tank, which is used for discharging plastics, the two ends of each chute are provided with openings, one end of each chute is flush with the upper surface of the flotation tank, the alkali washing tank or the rinsing tank, and the other end of each chute extends downwards.
Further, it is provided with a plurality of brushes to rotate along vertical direction in the alkali wash tank, and is a plurality of the brush distributes into two rows along the direction of delivery of plastics, and two rows the brush is close to respectively and sets up two inner walls that the alkali wash tank is relative, two rows the brush hair of brush sets up crisscross each other, and the transport route of plastics passes the clearance setting between two rows of brushes, two rows the rotation opposite direction of brush sets up, and two rows washing liquid via between the brush the direction that the plastics were carried is promoted to the brush and flows.
Further, a support is fixedly arranged on the alkali washing tank, a motor for driving the brush to rotate is fixedly arranged on the support, the motor and the brush are arranged in a one-to-one correspondence mode, the rotating shaft of the motor penetrates through the support, and the rotating shaft of the motor and the brush are coaxially fixed.
Furthermore, two the below of guipure formula conveyer is all fixed and is provided with a guiding gutter, two the washing liquid that guipure formula conveyer separates falls into respectively in two guiding gutters it is provided with two to move the material unit, two it is guipure formula conveyer to move the material unit, guipure formula conveyer's the porous setting of conveyer belt, and the aperture is less than the particle diameter setting of plastics, it is provided with a plurality of liftout baffles that are used for stopping plastics gliding to fix on guipure formula conveyer's the conveyer belt.
Furthermore, a diversion trench is fixedly arranged below each of the two mesh belt conveyors, and the cleaning liquid separated by the two mesh belt conveyors falls into the two diversion trenches respectively.
Furthermore, the collection units are three, the three collection units are respectively provided with a first buffer tank, a second buffer tank and a third buffer tank, the first buffer tank and the second buffer tank are respectively communicated with the two diversion trenches, a centrifugal drier is communicated between the third buffer tank and the rinsing pool, and the centrifugal drier is used for separating the plastic and the cleaning liquid discharged from the rinsing pool and discharging the cleaning liquid into the third buffer tank.
Furthermore, the number of the return pipes is two, the two return pipes are respectively a first return pipe and a second return pipe, the first return pipe is communicated with the third cache tank and the alkali washing tank, the second return pipe is communicated with the second cache tank and the flotation tank, and return pumps are fixedly arranged on the first return pipe and the second return pipe.
Furthermore, the liquid conveying mechanism further comprises a wastewater treatment device and a water inlet pipe, the wastewater treatment device is communicated with the first cache tank, and the water inlet pipe is communicated with the rinsing tank.
Compared with the prior art, the waste plastic recovery processing early-stage treatment system provided by the invention cleans the crushed plastic for multiple times through the arrangement of the washing structure so as to remove impurities and attachments in the plastic, and meanwhile, through the arrangement of the liquid conveying mechanism, the cleaning liquid discharged by the washing structure is utilized in a gradient manner so as to reduce the consumption of water resources and the discharge of the cleaning liquid, thereby reducing the sewage treatment pressure; specifically, the washing mechanism includes a plurality of washing units, a plurality of material units and a plurality of collection unit that move, and a plurality of washing units arrange in proper order, adjacent two all be linked together via moving the material unit between the washing unit, form a passageway of carrying plastics, a plurality of collection units and a plurality of washing unit one-to-one sets up, and the washing liquid of discharging when outwards carrying plastics with different washing units is collected respectively, and liquid conveying mechanism includes a plurality of back flows, and arbitrary one back flow intercommunication is a current collection unit and last washing unit, and the washing liquid that will collect in the collection unit flows back to and carries out echelon utilization in last washing unit to reach the purpose that reduces water resource consumption and reduce the sewage discharge volume.
Drawings
FIG. 1 is a schematic view of an overall structure of an embodiment of a waste plastic recycling and pre-processing system according to the present invention;
FIG. 2 is a schematic structural diagram of an alkaline washing tank in an embodiment of a waste plastic recycling and processing pretreatment system provided by the invention;
FIG. 3 is a schematic structural view of a mesh belt conveyor in an embodiment of a pre-treatment system for recycling waste plastics according to the present invention;
FIG. 4 is a schematic flow diagram of a cleaning solution in an embodiment of a pre-treatment system for recycling waste plastics according to the present invention.
In the figure: 1. a washing mechanism; 2. a liquid delivery mechanism; 11. a flotation tank; 12. alkali washing a pool; 13. a rinsing pool; 14. a mesh belt conveyor; 15. a first cache tank; 16. a second cache tank; 17. a third cache tank; 171. a centrifugal drier; 21. a first return pipe; 22. a second return pipe; 18. a stirring plug flow device; 181. a rotating shaft; 182. a paddle; 19. a chute; 121. a brush; 122. a support; 123. a motor; 141. a conveyor belt; 142. a material lifting baffle plate; 143. a diversion trench; 23. a reflux pump; 24. a sewage treatment device; 25. and (4) a water inlet pipe.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
As shown in fig. 1, the system for recycling and processing waste plastics in the embodiment includes a washing mechanism 1 and a liquid conveying mechanism 2, the washing mechanism 1 includes a plurality of washing units, a plurality of material transferring units and a plurality of collecting units, the plurality of washing units are sequentially arranged, two adjacent washing units are communicated with each other through the material transferring units to form a channel for conveying plastics, the plurality of collecting units and the plurality of washing units are arranged in one-to-one correspondence to collect cleaning liquid discharged when the plurality of washing units convey plastics outwards, the liquid conveying mechanism 2 includes a plurality of return pipes, any one of the return pipes communicates one of the collecting units with a previous washing unit, and the cleaning liquid discharged from the current washing unit flows back to the previous washing unit for gradient utilization.
The washing mechanism 1 is a mechanism for washing the crushed plastic for multiple times, and comprises a plurality of washing units, a plurality of material moving units and a plurality of collecting units, wherein the washing units are used for cleaning the plastic in multiple stages to remove different impurities and attachments on the surface of the plastic, the material moving units are used for conveying the plastic between different washing units, two adjacent washing units are communicated through the material moving units to form a channel for conveying the plastic, the collecting units are used for collecting the cleaning liquid discharged by the washing units, the collecting units are provided with a plurality of collecting units, and the collecting units are arranged in one-to-one correspondence with the washing units and used for distinguishing and collecting the cleaning liquid discharged by the different washing units; liquid conveying mechanism 2 is used for realizing carrying out the transport of washing liquid to a plurality of washing units, liquid conveying mechanism 2 includes a plurality of back flows, the last washing mechanism 1 that arbitrary one back flow intercommunication collection unit and correspond with the collection unit, thereby carry out echelon utilization in 1 with the washing liquid of discharge among the current washing mechanism 1 backward flow to last washing mechanism, in order to avoid constantly supplementing the washing liquid in a plurality of washing units, in order to reduce the consumption of water resource, whole washing mechanism 1 outside exhaust washing liquid discharge amount has also been reduced, sewage treatment's pressure has been alleviateed.
In the present embodiment, the washing mechanism 1 is a mechanism for continuously washing the crushed plastic for a plurality of times, and the washing mechanism 1 is modified in the following embodiment in order to remove impurities mixed in the plastic and attachments on the surface of the plastic by performing a plurality of washing processes on the plastic in the continuous conveying process, and to improve the washing effect of the washing mechanism 1.
In order to better remove impurities and attachments, in a preferred embodiment, as shown in fig. 1-2, three washing units are provided, the three washing units are respectively a flotation tank 11, an alkaline washing tank 12 and a rinsing tank 13, the flotation tank 11, the alkaline washing tank 12 and the rinsing tank 13 are respectively provided with an agitation plug flow device 18 in a rotating manner at two ends in a plastic conveying direction, the agitation plug flow device 18 comprises a rotating shaft 181 and a paddle 182, the rotating shaft 181 is arranged perpendicular to the plastic conveying direction, an axis of the rotating shaft 181 is positioned flush with a liquid level of a cleaning liquid in a tank body where the rotating shaft 181 is positioned, the paddle 182 is fixed on the rotating shaft 181 in the axis direction of the rotating shaft 181, and the paddle 182 rotates along with the rotating shaft 181 to push the cleaning liquid to flow towards the plastic conveying direction.
The plastic cleaning device comprises a flotation tank 11, an alkaline washing tank 12 and a rinsing tank 13, wherein the flotation tank 11 sequentially cleans the plastic, the flotation tank 11 primarily cleans the plastic, solid impurities such as metal and dust in the plastic are separated through density difference, the alkaline washing tank 12 is used for cleaning oil stain, glue stain and the like attached to the plastic in the plastic, the rinsing tank 13 is used for rinsing alkali liquor remaining on the plastic, the flotation tank 11, the alkaline washing tank 12 and the rinsing tank 13 are all of rectangular tank body structures, two end faces of the tank body structures are a feeding end and a discharging end of the tank body structures, a stirring and pushing device 18 arranged at the feeding end position can scatter the plastic falling into the feeding end and press the plastic downwards into the cleaning liquid, so that the plastic is fully mixed into the cleaning liquid, the cleaning effect on the plastic is improved, the stirring and pushing device 18 arranged at the discharging end position is arranged, the plastic near the tank body can be thrown out of the tank body through the rotation of a blade 182, so that the plastic enters a separation and is conveyed, and meanwhile, the stirring and the pushing device 18 in an implementation mode rotates towards the conveying direction of the plastic to drive the cleaning liquid to flow towards the designated conveying direction.
It can be understood that the arrangement of the washing unit in this embodiment is a preferable scheme, and in order to enhance the cleaning effect, a person skilled in the art may add other washing units.
It should be noted that, in the initial state, the cleaning liquids in the flotation tank 11 and the rinsing tank 13 are clean water, the cleaning liquid in the alkaline washing tank 12 is a heated alkaline solution, and the alkaline solution reacts with the oil stains to generate saponified substances and glycerin when the oil stains are washed, and under the action of the saponified substances and the glycerin, the cleaning effect on other attachments, such as glue stains and the like, is enhanced, along with the operation of the whole waste plastic recycling and processing pretreatment system, most of the alkaline solution containing the saponified substances and the glycerin discharged from the alkaline washing tank 12 enters the flotation tank 11 along with the second return pipe 22, the cleaning effect in the flotation tank 11 is enhanced, the water discharged from the flotation tank 11 enters the alkaline washing tank 12 to supplement the liquid in the alkaline washing tank 12, and during the long-term operation of the waste plastic recycling and processing pretreatment system, workers can be arranged to regularly supplement the alkaline solute in the alkaline washing tank 12 and supplement the clean water in the rinsing tank 13 to maintain the alkaline concentration in the alkaline washing tank 12 and the clean water amount in the rinsing tank 13.
In order to facilitate discharging the plastic in the washing mechanism 1 onto the separating and conveying mechanism, in a preferred embodiment, as shown in fig. 1, a chute 19 is fixedly arranged at one end of each of the flotation tank 11, the alkaline washing tank 12 and the rinsing tank 13 for discharging the plastic, two ends of each chute 19 are open, one end of each chute 19 is flush with the upper surface of the flotation tank 11, the alkaline washing tank 12 or the rinsing tank 13, and the other end of each chute 19 extends downwards.
The chute 19 plays a good guiding role, so that the plastic and the cleaning liquid are prevented from scattering outside the waste plastic recycling and processing pretreatment system, and the stability of the plastic litigation process is ensured.
In order to further remove the attachments on the plastics, in a preferred embodiment, as shown in fig. 1-2, a plurality of brushes 121 are rotatably disposed in the alkaline washing tank 12 along the vertical direction, the plurality of brushes 121 are distributed into two rows along the conveying direction of the plastics, the two rows of brushes 121 are respectively disposed close to two opposite inner walls of the alkaline washing tank 12, the bristles of the two rows of brushes 121 are staggered with each other, the conveying path of the plastics passes through the gap between the two rows of brushes 121, the rotating directions of the two rows of brushes 121 are opposite, and the cleaning liquid between the two rows of brushes 121 is pushed by the brushes 121 to flow towards the conveying direction of the plastics.
The plastic in the alkaline washing tank 12 passes through the gap between the two rows of brushes 121 in the process that the plastic flows from the feeding end to the discharging end along with the cleaning liquid, so that the surface of the plastic is washed by the brushes 121, stubborn attachments on the surface of the plastic can be effectively removed under the action of the alkali liquid and saponified substances and glycerin in the alkali liquid, and the two rows of brushes 121 are rotatably arranged in the direction of the flow of the cleaning liquid between the two rows of brushes 121, so that the plastic is prevented from being conveyed in the alkaline washing tank 12.
In order to install the brush 121, in a preferred embodiment, as shown in fig. 1, a bracket 122 is fixedly disposed on the alkaline washing basin 12, a motor 123 for driving the brush 121 to rotate is fixedly disposed on the bracket 122, the motor 123 and the brush 121 are disposed in a one-to-one correspondence, a rotating shaft of the motor 123 penetrates through the bracket 122, and a rotating shaft of the motor 123 is coaxially fixed with the brush 121.
The support 122 mainly plays a role in mounting the brush 121 and the motor 123, a stable mounting station is provided for the brush 121 and the motor 123, and the shape and the structure of the support 122 can be adjusted according to actual use requirements as long as the support does not obstruct the mounting of other parts.
In order to better separate the plastic from the cleaning liquid, in a preferred embodiment, as shown in fig. 1 and 3, two material moving units are provided, both of the two material moving units are the mesh belt conveyor 14, the conveyor belt 141 of the mesh belt conveyor 14 is provided with a plurality of holes, the hole diameter of the conveyor belt 141 is smaller than the particle diameter of the plastic, and a plurality of material lifting baffles 142 for stopping the plastic from sliding downwards are fixedly arranged on the conveyor belt 141 of the mesh belt conveyor 14.
The mesh belt conveyor 14 separates the cleaning liquid together with the plastic while conveying the plastic to avoid polluting the cleaning liquid of the next-stage cleaning device, and the material lifting baffle 142 is arranged perpendicular to the outer side surface of the conveyor belt 141 to limit the plastic from sliding relative to the conveyor belt 141 in the transmission process of the conveyor belt 141, so that the plastic can be conveyed more stably.
It is understood that the cleaning liquid and the plastic are separated by the meshed conveyor belt 141 in the present embodiment, and other separation conveying devices may be used instead of the mesh belt conveyor 14 in the present embodiment, for example, a meshed screw conveyor may also achieve the above-mentioned function of separating the cleaning liquid and the plastic.
In a preferred embodiment, as shown in fig. 3, a diversion trench 143 is fixedly arranged below each of the two mesh belt conveyors 14, and the cleaning liquid separated by the two mesh belt conveyors 14 falls into the two diversion trenches 143 respectively.
It can be understood that the cleaning solution separated from the conveyor 141 and falling down flows into the guiding groove 143, and is collected by the guiding groove 143 and discharged.
In order to facilitate the collection of the cleaning liquid, in a preferred embodiment, as shown in fig. 1, three collection units are provided, the three collection units are respectively provided as a first buffer tank 15, a second buffer tank 16 and a third buffer tank 17, the first buffer tank 15 and the second buffer tank 16 are respectively provided in communication with two diversion trenches 143, a centrifugal drier 171 is provided in communication between the third buffer tank 17 and the rinsing tank 13, and the centrifugal drier 171 is used for separating the plastic and the cleaning liquid discharged from the rinsing tank 13 and discharging the cleaning liquid into the third buffer tank 17.
The first buffer tank 15, the second buffer tank 16 and the third buffer tank 17 are respectively used for collecting washing liquid discharged from the flotation tank 11, the alkaline washing tank 12 and the rinsing tank 13, when the plastic in the rinsing tank 13 is discharged, the plastic enters the centrifugal drier 171 through the chute 19, the washing liquid separated from the centrifugal drier 171 enters the third buffer tank 17 for recycling, and the plastic dehydrated by the centrifugal drier 171 can be used for granulation processing.
In this embodiment, the liquid conveying mechanism 2 is used for conveying and outputting the cleaning liquid into the washing mechanism 1 to maintain the stability of the liquid level of the cleaning liquid in the washing mechanism, and is also used for recycling the cleaning liquid discharged from the washing mechanism 1 to reduce the waste of water resources.
In order to facilitate conveying of the cleaning liquid, two return pipes are provided, the two return pipes are respectively a first return pipe 21 and a second return pipe 22, the first return pipe 21 is communicated with the third cache tank 17 and the alkaline washing tank 12, the second return pipe 22 is communicated with the second cache tank 16 and the flotation tank 11, and return pumps 23 are fixedly arranged on the first return pipe 21 and the second return pipe 22.
Through the arrangement of the reflux pump 23, the cleaning liquid in the second buffer tank 16 and the cleaning liquid in the third buffer tank 17 can be respectively conveyed into the flotation tank 11 and the alkaline cleaning tank 12.
In order to keep the liquid levels in the flotation tank 11 and the rinse tank 13 stable, in a preferred embodiment, as shown in fig. 1 and 4, the liquid delivery mechanism 2 further comprises a wastewater treatment device and a water inlet pipe 25, the wastewater treatment device is arranged in communication with the first buffer tank 15, and the water inlet pipe 25 is arranged in communication with the rinse tank 13.
Wherein, the processing earlier stage processing system is retrieved to waste plastic only has a feed liquor end and a flowing back end, the feed liquor end is inlet tube 25, be used for replenishing the clear water in to rinsing pond 13, the flowing back end is effluent treatment plant, be used for handling the exhaust washing liquid in flotation tank 11, as for the exhaust washing liquid then retrieve respectively in alkaline washing tank 12 and rinsing pond 13 and recycle in flotation tank 11 and the alkaline washing tank 12, reduce the waste of water resource, also reduce the discharge amount of sewage, reduce sewage treatment's pressure, make flotation tank 11 simultaneously, the washing liquid in alkaline washing tank 12 and rinsing pond 13 constantly circulates, in order to avoid flotation tank 11, the impurity constantly increases in alkaline washing tank 12 and the rinsing pond 13, lead to the cleaning performance to reduce.
Compared with the prior art: according to the waste plastic recycling and processing pretreatment system, the broken plastic is cleaned for multiple times through the arrangement of the washing structure so as to remove impurities and attachments in the plastic, meanwhile, through the arrangement of the liquid conveying mechanism 2, the cleaning liquid discharged by the washing structure is utilized in a gradient manner so as to reduce the consumption of water resources and the discharge of the cleaning liquid, and therefore, the sewage treatment pressure is reduced; specifically, the washing mechanism 1 comprises a plurality of washing units, a plurality of material moving units and a plurality of collecting units, the washing units are sequentially arranged, two adjacent washing units are communicated with each other through the material moving units to form a plastic conveying channel, the collecting units and the washing units are arranged in a one-to-one correspondence manner, cleaning liquids discharged when the different washing units convey plastics outwards are respectively collected, the liquid conveying mechanism 2 comprises a plurality of return pipes, any one of the return pipes is communicated with the current collecting unit and the previous washing unit, and the cleaning liquids collected in the collecting units are returned to the previous washing unit for echelon utilization, so that the purposes of reducing water resource consumption and reducing sewage discharge amount are achieved;
meanwhile, the cleaning liquids in different cleaning devices can be gradually replaced through the water inlet pipe 25, the first return pipe 21, the second return pipe 22 and the sewage treatment device 24, the cleaning liquid discharged when the rinsing tank 13 conveys plastics is discharged into the alkaline washing tank 12 through the first return pipe 21 to replenish the cleaning liquid lost in the alkaline washing tank 12, the cleaning liquid lost in the rinsing tank 13 is replenished through the water inlet pipe 25, the cleaning liquid discharged when the alkaline washing tank 12 conveys plastics is discharged into the flotation tank 11 through the second return pipe 22, the cleaning liquid discharged in the alkaline washing tank 12 is an alkaline solution containing glycerin and saponifiable matters, the cleaning effect of the flotation tank 11 can be improved, the cleaning liquid discharged when the flotation tank 11 conveys plastics is purified through the sewage treatment device 24, therefore, the cleaning liquids in the flotation tank 11, the alkaline washing tank 12 and the rinsing tank 13 are dynamically balanced, the continuous replacement effect of the cleaning liquid is realized, and the continuous increase of impurities in the flotation tank 11, the alkaline washing tank 12 and the rinsing tank 13 and the reduction of the cleaning effect is avoided;
on the other hand, a brush 121 for brushing the plastics is arranged in the alkaline washing tank 12, and glycerin and saponifiable matter produced by the reaction of the alkaline liquor in the alkaline washing tank 12 and the oil stains can easily remove the attachments which are difficult to dissolve in water on the surface of the plastics under the action of the brush 121, so that the washing effect on the plastics is improved, and the subsequent granulation processing quality of the plastics is not influenced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. A waste plastic recovery processing early-stage treatment system is characterized by comprising a washing mechanism and a liquid conveying mechanism;
the washing mechanism comprises a plurality of washing units, a plurality of material moving units and a plurality of collecting units, the washing units are sequentially arranged, two adjacent washing units are communicated through the material moving units to form a channel for conveying plastics, and the collecting units and the washing units are arranged in one-to-one correspondence and are used for collecting cleaning liquid discharged when the washing units convey plastics outwards;
the liquid conveying mechanism comprises a plurality of return pipes, any one of the return pipes is communicated with one collection unit and the previous washing unit, and cleaning liquid discharged by the current washing unit flows back to the previous washing unit for gradient utilization.
2. The waste plastic recycling and processing pretreatment system according to claim 1, wherein the number of the washing units is three, the three washing units are respectively a flotation tank, an alkaline washing tank and a rinsing tank, the two ends of the flotation tank, the alkaline washing tank and the rinsing tank in the plastic conveying direction are rotatably provided with a stirring and flow-pushing device, the stirring and flow-pushing device comprises a rotating shaft and a blade, the rotating shaft is perpendicular to the plastic conveying direction, the axis of the rotating shaft is located at the same level with the liquid level of a cleaning solution in the tank where the rotating shaft is located, the blade is fixed on the rotating shaft in the axis direction of the rotating shaft, and the blade rotates along with the rotating shaft to push the cleaning solution to flow towards the plastic conveying direction.
3. The system for the pre-treatment of the recycling processing of waste plastics according to claim 2, wherein a chute is fixedly arranged at one end of each of the flotation tank, the alkaline washing tank and the rinsing tank for discharging plastics, the chute is open at both ends, one end of any one chute is flush with the upper surface of the flotation tank, the alkaline washing tank or the rinsing tank, and the other end of any chute extends downwards.
4. The system for pre-treatment of waste plastic recycling processing according to claim 3, wherein a plurality of brushes are rotatably disposed in the alkaline washing tank along a vertical direction, the plurality of brushes are distributed in two rows along a conveying direction of the plastic, the two rows of brushes are disposed close to two opposite inner walls of the alkaline washing tank, respectively, bristles of the two rows of brushes are disposed in a staggered manner, a conveying path of the plastic passes through a gap between the two rows of brushes, the rotating directions of the two rows of brushes are opposite, and the cleaning solution between the two rows of brushes is pushed by the brushes to flow toward the conveying direction of the plastic.
5. The waste plastic recycling and processing pretreatment system as recited in claim 4, wherein a support is fixedly disposed on the alkaline washing basin, a motor for driving the brushes to rotate is fixedly disposed on the support, the motor and the brushes are disposed in a one-to-one correspondence, a rotation shaft of the motor penetrates through the support, and a rotation shaft of the motor is coaxially fixed with the brushes.
6. The waste plastic recycling processing pretreatment system according to any one of claims 2 to 5, wherein two material transferring units are provided, both material transferring units are mesh belt conveyors, conveyor belts of the mesh belt conveyors are porous and have pore diameters smaller than the particle diameter of the plastic, and a plurality of material lifting baffles for preventing the plastic from sliding down are fixedly arranged on the conveyor belts of the mesh belt conveyors.
7. The system as claimed in claim 6, wherein a diversion trench is fixed below each of the two mesh-belt conveyors, and the cleaning solution separated by the two mesh-belt conveyors falls into the two diversion trenches respectively.
8. The system as claimed in claim 7, wherein the collection units are three, the three collection units are respectively configured as a first buffer tank, a second buffer tank and a third buffer tank, the first buffer tank and the second buffer tank are respectively configured to communicate with the two diversion trenches, a centrifugal drier is configured to communicate between the third buffer tank and the rinsing tank, and the centrifugal drier is configured to separate the plastic and the cleaning solution discharged from the rinsing tank and discharge the cleaning solution into the third buffer tank.
9. The system as claimed in claim 8, wherein there are two return pipes, the two return pipes are a first return pipe and a second return pipe, the first return pipe is connected to the third buffer tank and the alkali washing tank, the second return pipe is connected to the second buffer tank and the flotation tank, and a return pump is fixed to both the first return pipe and the second return pipe.
10. The waste plastic recycling and processing pretreatment system of claim 9, wherein the liquid conveying mechanism further comprises a wastewater treatment device and a water inlet pipe, the wastewater treatment device is communicated with the first buffer tank, and the water inlet pipe is communicated with the rinsing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211109969.3A CN115463887B (en) | 2022-09-13 | 2022-09-13 | Waste plastic recycling and processing pretreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211109969.3A CN115463887B (en) | 2022-09-13 | 2022-09-13 | Waste plastic recycling and processing pretreatment system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115463887A true CN115463887A (en) | 2022-12-13 |
| CN115463887B CN115463887B (en) | 2023-12-26 |
Family
ID=84333200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211109969.3A Active CN115463887B (en) | 2022-09-13 | 2022-09-13 | Waste plastic recycling and processing pretreatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115463887B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104254403A (en) * | 2012-03-26 | 2014-12-31 | 阿利坎特大学 | Method for removing ink printed on plastic films |
| CN105291304A (en) * | 2015-10-15 | 2016-02-03 | 冯愚斌 | Recycle production line and recycle technology of PET (Polyethylene Terephthalate) bottles |
| CN206579017U (en) * | 2016-08-29 | 2017-10-24 | 民勤县威瑞环保有限责任公司 | A kind of waste mulching film cleaning granulation retracting device |
| CN108748786A (en) * | 2018-04-30 | 2018-11-06 | 苏州玖隆再生科技股份有限公司 | A kind of regeneration PE material manufacturing techniques |
| CN208201060U (en) * | 2018-05-08 | 2018-12-07 | 温州科锐环境资源利用有限公司 | A kind of plastic collection device |
| CN111113731A (en) * | 2019-12-26 | 2020-05-08 | 安徽冠泓塑业有限公司 | Processing method of regenerated ABS plastic particles for automobile interior trim |
| CN211897133U (en) * | 2020-02-27 | 2020-11-10 | 河北星熠机械设备有限公司 | Steel sheet degrease belt cleaning device |
| CN112044588A (en) * | 2020-08-27 | 2020-12-08 | 烟台大为环保科技有限公司 | Plastic cleaning sediment treatment system and treatment method thereof |
-
2022
- 2022-09-13 CN CN202211109969.3A patent/CN115463887B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104254403A (en) * | 2012-03-26 | 2014-12-31 | 阿利坎特大学 | Method for removing ink printed on plastic films |
| US20150298360A1 (en) * | 2012-03-26 | 2015-10-22 | Universidad De Alicante | Method for removing ink printed on plastic films |
| CN105291304A (en) * | 2015-10-15 | 2016-02-03 | 冯愚斌 | Recycle production line and recycle technology of PET (Polyethylene Terephthalate) bottles |
| CN206579017U (en) * | 2016-08-29 | 2017-10-24 | 民勤县威瑞环保有限责任公司 | A kind of waste mulching film cleaning granulation retracting device |
| CN108748786A (en) * | 2018-04-30 | 2018-11-06 | 苏州玖隆再生科技股份有限公司 | A kind of regeneration PE material manufacturing techniques |
| CN208201060U (en) * | 2018-05-08 | 2018-12-07 | 温州科锐环境资源利用有限公司 | A kind of plastic collection device |
| CN111113731A (en) * | 2019-12-26 | 2020-05-08 | 安徽冠泓塑业有限公司 | Processing method of regenerated ABS plastic particles for automobile interior trim |
| CN211897133U (en) * | 2020-02-27 | 2020-11-10 | 河北星熠机械设备有限公司 | Steel sheet degrease belt cleaning device |
| CN112044588A (en) * | 2020-08-27 | 2020-12-08 | 烟台大为环保科技有限公司 | Plastic cleaning sediment treatment system and treatment method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115463887B (en) | 2023-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2014117586A1 (en) | Recycling processing device and recycling processing method of waste plastic film | |
| CN113245292A (en) | Assembly line type activated carbon pickling and washing integrated machine | |
| CN203210559U (en) | Waste plastic film recycling equipment | |
| CN205291332U (en) | Broken cleaning line of film | |
| CN107443621B (en) | A kind of heavy water material cleaning separator and method | |
| CN102020403B (en) | Sludge purification treatment method and device | |
| CN102284343A (en) | Improved garbage elutriation machine | |
| CN115463887A (en) | Processing earlier stage processing system is retrieved to abandonment plastics | |
| CN217699559U (en) | Garbage sorting equipment | |
| CN212097071U (en) | Rinsing separator | |
| CN215389937U (en) | Floating impurity collection type spiral stone cleaning machine | |
| CN109653016A (en) | A kind of paper industry paper remanufacture line | |
| CN104941790A (en) | Ternary garbage elutriating and sorting machine | |
| CN202169206U (en) | Improved garbage wash mill | |
| CN217534126U (en) | HDPE hollow bottle pretreatment tank | |
| CN212941640U (en) | A device for extracting metal particle in aluminium material waste water | |
| CN214918455U (en) | Quick belt cleaning device is used in integrated circuit board waste recovery | |
| CN209940864U (en) | Emulsion explosive cartridge cooling system | |
| CN115157485B (en) | Impurity removal and elutriation equipment and method for micro plastic particles and application of impurity removal and elutriation equipment and method in recycling of micro plastic particles | |
| CN212578994U (en) | Recycling system of PET bottle flakes | |
| CN219539682U (en) | Sewage treatment device | |
| CN113320896B (en) | Slag water collecting device and continuous belt conveyor | |
| CN220907248U (en) | Washing water conveying mechanism with recovery mechanism | |
| CN219057648U (en) | Belt washes waste water recovery unit | |
| CN212707549U (en) | Plastic bottle lid body separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |