CN110238993B - System for sorting and regenerating plastics in household garbage - Google Patents
System for sorting and regenerating plastics in household garbage Download PDFInfo
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- CN110238993B CN110238993B CN201910465238.4A CN201910465238A CN110238993B CN 110238993 B CN110238993 B CN 110238993B CN 201910465238 A CN201910465238 A CN 201910465238A CN 110238993 B CN110238993 B CN 110238993B
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- 229920003023 plastic Polymers 0.000 title claims abstract description 110
- 239000004033 plastic Substances 0.000 title claims abstract description 110
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 32
- 230000001172 regenerating effect Effects 0.000 title abstract description 6
- 238000004140 cleaning Methods 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000001179 sorption measurement Methods 0.000 claims abstract description 31
- 239000010865 sewage Substances 0.000 claims abstract description 29
- 239000004576 sand Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 238000004062 sedimentation Methods 0.000 claims abstract description 8
- 238000012216 screening Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 61
- 238000000926 separation method Methods 0.000 claims description 13
- 239000004744 fabric Substances 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000013049 sediment Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000010791 domestic waste Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 238000004064 recycling Methods 0.000 abstract description 6
- 239000000123 paper Substances 0.000 description 19
- 238000004537 pulping Methods 0.000 description 11
- 239000000428 dust Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 206010024796 Logorrhoea Diseases 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 208000034699 Vitreous floaters Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention discloses a plastic sorting and regenerating system in household garbage, which comprises a bag breaking unit, a cylindrical sorting screening machine, an adsorption unit, a winnowing unit, a sand remover, a paper-plastic separator, a plastic crusher, a hydraulic cleaning unit, an inclined screen, a sedimentation tank, an oil removal tank, a cleaning unit, a sewage treatment unit, a compression unit and a plastic particle manufacturing unit. The plastic sorting and regenerating system in the household garbage can separate the plastic in the household garbage more thoroughly, improve the plastic sorting efficiency, directly remanufacture the separated plastic, ensure the process continuity, treat sewage through the sewage treatment unit, realize the recycling of water resources and is very green and environment-friendly.
Description
Technical Field
The invention relates to the technical field of household garbage treatment, in particular to a plastic sorting and regenerating system in household garbage.
Background
At present, domestic garbage is treated basically in a landfill mode and an incineration mode, the components of the domestic garbage are complex, the proportion of plastics is about 10%, if the domestic garbage is buried underground by adopting a landfill method, the materials in the domestic garbage are difficult to degrade, and the soil is polluted greatly. The incineration method blocks the way of plastic circulation, and a series of toxic gases can be generated by incineration, so that secondary pollution is caused. The existing winnowing equipment can realize plastic sorting to a certain extent, but the sorting efficiency is not high, and the plastic in the household garbage is not thoroughly separated. At present, the sorting of plastics in household garbage and the regeneration of the sorted plastics are basically completed in different factories, are two relatively independent working procedures, have no production continuity and have lower efficiency. In addition, in view of the current plastic being renewable, a large amount of water is often required for cleaning, and water resource waste is caused.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a sorting and renewable system for plastics in household garbage, which can separate plastics in the household garbage more thoroughly, has high sorting efficiency and is environment-friendly.
The invention adopts the following technical scheme:
A system for sorting and recycling plastic in household garbage, comprising:
a bag breaking unit adapted to break plastic bags in household garbage;
the cylinder sorting screening machine comprises a screen cylinder and a driving mechanism for driving the screen cylinder to rotate, wherein the screen cylinder is obliquely arranged, one end of the screen cylinder, which is higher, is a feeding end, one end of the screen cylinder, which is lower, is a discharging end, screen holes are formed in the wall of the middle section of the screen cylinder, and a blowing device is further arranged at the feeding end of the screen cylinder and used for blowing out sheet-shaped objects with lighter mass in the screen cylinder from the discharging end;
The adsorption unit is suitable for carrying out negative pressure adsorption sorting on the materials passing through the sieve holes so as to sort out plastic scraps and crushed paper;
A wind separation unit adapted to wind-separate the material which does not pass through the mesh and is not blown out by the blower device, so as to separate out plastics and paper;
The sand remover is suitable for removing sand from the materials separated by the adsorption unit, the materials separated by the air separation unit and the materials blown out from the discharge end of the screen drum;
the paper-plastic separator is suitable for separating paper from plastic of the material subjected to sand removal by the sand remover so as to separate out plastic and cloth;
a plastic crusher, which is suitable for crushing the materials separated by the paper-plastic separator;
a hydraulic cleaning unit which is suitable for cleaning the materials passing through the plastic crusher;
the mesh of the inclined screen is 60-80 meshes, and the inclined screen is suitable for separating materials flowing out of the hydraulic cleaning unit from sewage, wherein the sewage flows out of the mesh of the inclined screen, and the materials slide downwards along the upper surface of the inclined screen;
a settling tank adapted to float-sort material discharged from an upper surface of the inclined screen to sort out floats as well as sediments;
An oil removal tank adapted to chemically remove oil from the floats sorted by the sedimentation tank;
a cleaning unit adapted to clean the material passing through the oil removal tank;
a sewage treatment unit adapted to treat sewage flowing out of the mesh openings of the inclined screen and sewage in the oil removal tank to obtain clear water; wherein clean water is suitable for being supplied to the cleaning unit for cleaning;
A compression unit adapted to compress the material passing through the washing unit; the extruded water is suitable for being supplied to the hydraulic cleaning unit;
and the plastic particle manufacturing unit is suitable for manufacturing the material extruded by the compression unit into plastic particles.
Further, the inner wall of the screen cylinder is also provided with a plurality of bag breaking knife groups, each bag breaking knife group consists of at least two bag breaking knives which are arranged in parallel so as to form a bearing platform on the knife tip part of each bag breaking knife group, the bag breaking knife groups are obliquely arranged along the advancing direction of the screen cylinder of the material, and the axes of the pre-screen cylinders are basically parallel and level in the radial direction.
Further, the discharge end of the screen cylinder is also provided with a spiral guide plate.
Further, the screen drum is obliquely arranged at 5-10 degrees.
Further, the screen drum is inclined at 8 °.
Further, the bag breaking knife group consists of 4 bag breaking knives, and the inclination angle of the bag breaking knife group is 10-30 degrees.
Further, the inclination angle of the bag breaking knife set is 20 degrees.
Further, the hydraulic cleaning unit is a plastic cleaning separator, and the plastic cleaning separator comprises a base, a cleaning cylinder, a driving mechanism and a pulping knife; the base is suitable for supporting the cleaning cylinder, be provided with the filter screen in the cleaning cylinder, the garrulous thick liquid sword is located in the cleaning cylinder just be located the filter screen top, actuating mechanism is suitable for the drive garrulous thick liquid sword rotates, be provided with the water inlet on the cleaning cylinder, the water inlet intercommunication has water supply installation, the bottom of cleaning cylinder is provided with the drain, the bin outlet has been seted up on the lateral wall of cleaning cylinder, bin outlet department is provided with downward sieve of slope, the liquid level height in the cleaning cylinder is higher than the bin outlet.
Further, the water inlet is communicated with the water supply device through a water inlet pipe, and a water inlet valve is arranged on the water inlet pipe; the drain outlet is communicated with a drain pipe, and a drain valve is arranged on the drain pipe.
Further, the adsorption unit is a negative pressure adsorption catcher, and the negative pressure adsorption catcher comprises a turbine type high-pressure fan, a circulating air inlet pipe, a jet pipe and a cyclone catcher; the upper portion of whirlwind trap is the cylinder barrel, the lower part of whirlwind trap is the round platform barrel, the upper end diameter of round platform barrel is greater than its lower extreme diameter, the upper end of round platform barrel with the lower extreme of cylinder barrel is connected, the upper end of cylinder barrel is provided with the top cap, be provided with the cylinder on the top cap and go out the tuber pipe, the cylinder go out the tuber pipe with the cylinder barrel is coaxial to be set up, turbine high-pressure fan's air inlet end pass through the circulation air-supply line with the cylinder goes out the tuber pipe intercommunication, turbine high-pressure fan's air-supply end pass through the jet pipe with cylinder barrel intercommunication, the air current in the jet pipe is suitable for followed the tangential direction of cylinder barrel gets into the cylinder barrel, the negative pressure absorption mouth has been seted up on the jet pipe.
Compared with the prior art, the invention has the beneficial effects that: the plastic sorting and regenerating system in the household garbage can separate the plastic in the household garbage more thoroughly, improve the plastic sorting efficiency, directly remanufacture the separated plastic, ensure the process continuity, treat sewage through the sewage treatment unit, realize the recycling of water resources and is very green and environment-friendly.
Drawings
FIG. 1 is a block diagram of a system for sorting and recycling plastic in household garbage according to the present invention;
FIG. 2 is a schematic diagram of a cylindrical sorting screen according to the present invention;
FIG. 3 is a schematic distribution diagram of a bag breaker set according to the present invention;
FIG. 4 is a rotated view of A-A of FIG. 3;
FIG. 5 is a schematic diagram of the plastic cleaning separator of the present invention;
FIG. 6 is a schematic diagram of a negative pressure suction catcher of the present invention.
In the figure: 11. a screen drum; 12. a blower device; 13. a bag breaking knife group; 14. a spiral guide plate; 21. a base; 22. a cleaning cylinder; 221. a water inlet; 222. a sewage outlet; 223. a discharge port; 23. a driving mechanism; 24. a pulping knife; 25. a filter screen; 26. a diagonal screen; 27. a water inlet pipe; 271. a water inlet valve; 28. a blow-down pipe; 281. a blow-down valve; 31. turbine type high-pressure fan; 32. a circulating air inlet pipe; 33. a cyclone catcher; 331. a cylindrical barrel; 332. round table cylinder; 34. a cylindrical air outlet pipe; 35. a jet pipe; 351. negative pressure adsorption port.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the system for sorting and recycling plastic in household garbage provided by the embodiment of the invention comprises a bag breaking unit, a cylindrical sorting screening machine, an adsorption unit, a winnowing unit, a sand remover, a paper-plastic separator, a plastic crusher, a hydraulic cleaning unit, an inclined screen 26, a sedimentation tank, an oil removal tank, a cleaning unit, a sewage treatment unit, a compression unit and a plastic particle manufacturing unit.
Wherein, the bag breaking unit is suitable for breaking the plastic bags in the household garbage. It should be noted that, in the actual production process, the bag breaking unit may be a garbage bag breaker as disclosed in chinese patent CN103569430B or a garbage bag breaker as disclosed in chinese patent CN102319605B, but the present invention is not limited to any bag breaker, as long as the bag breaking unit can achieve the effect of breaking a plastic bag.
Referring to fig. 2 to 4, the cylindrical sorting and screening machine comprises a screen drum 11 and a driving mechanism 23 for driving the screen drum 11 to rotate, wherein the screen drum 11 is obliquely arranged, the higher end of the screen drum 11 is a feed end, the lower end of the screen drum 11 is a discharge end, screen holes are formed in the wall of the middle section of the screen drum 11, a blast device 12 is further arranged at the feed end of the screen drum 11, and the blast device 12 is used for blowing out sheet-shaped objects with lighter mass in the screen drum 11 from the discharge end. The lightweight sheet-like objects in the screen cylinder 11 are here in particular sheet-like plastics, cloth sheets, leaves and papers. Such objects, due to their large windward area, can be blown out of the discharge end by the blower device 12.
The adsorption unit is suitable for carrying out negative pressure adsorption sorting on the materials passing through the sieve holes so as to sort out plastic scraps and crushed paper. It should be noted that, since the screen holes are formed on the wall of the middle section of the screen drum 11, after the household garbage enters the screen drum 11, the materials with the particle size smaller than the screen holes leak out of the screen holes along with the rotation of the screen drum 11, and then the plastic dust and the crushed paper are difficult to blow out from the discharge end by the blower device 12 due to the smaller air-bearing area, and the plastic dust and the crushed paper leak out of the screen holes due to the relatively smaller particle size, the adsorption unit is adopted to perform negative pressure adsorption sorting on the materials in the part so as to sort out the plastic dust and the crushed paper in the part of materials, thus the plastic in the household garbage can be separated more thoroughly. The adsorption unit may be implemented by using a prior art, for example, a negative pressure separation device for solid waste disclosed in chinese patent CN 103447235B.
The air separation unit is adapted to perform air separation of the material that does not pass through the screen openings and that has not been blown out by the blower device 12 for separating out plastic as well as paper. Namely, the invention adopts the winnowing unit to carry out the supplementary sorting to the materials which do not pass through the sieve holes and are not blown out by the blast equipment 12, so that the plastic materials in the household garbage can be further separated. It should be noted that the air separation unit may also be implemented by using the prior art, and will not be described here. In summary, the plastic is subjected to supplementary sorting through the adsorption unit and the air separation unit, so that the plastic in the household garbage can be sorted out thoroughly as possible.
The desanding device is suitable for desanding the materials separated by the adsorption unit and the materials separated by the air separation unit and blown out from the discharge end of the screen drum 11. It should be noted that, since the household garbage is inevitably mixed with sand during the transportation process, in order to facilitate the subsequent plastic remanufacturing, sand needs to be removed as much as possible by the former process worker, so that the sand remover is adopted to remove sand from the materials.
The paper-plastic separator is suitable for separating paper from plastic of the material subjected to sand removal by the sand remover so as to separate out plastic and cloth. The materials after sand removal by the sand remover mainly comprise plastics, paper and cloth, the plastics and the cloth can be separated through the paper-plastic separation function of the paper-plastic separator, and the paper can be changed into paper pulp to be separated from the plastics and the cloth.
The plastic crusher is suitable for crushing the materials separated by the paper-plastic separator, and the plastic crusher in the prior art can be adopted as well.
The hydraulic cleaning unit is suitable for cleaning the materials passing through the plastic crusher, specifically referring to fig. 5, the hydraulic cleaning unit is a plastic cleaning separator, and the plastic cleaning separator comprises a base 21, a cleaning cylinder 22, a driving mechanism 23 and a pulping knife 24; the base 21 is suitable for supporting the cleaning cylinder 22, a filter screen 25 is arranged in the cleaning cylinder 22, the pulping knife 24 is positioned in the cleaning cylinder 22 and above the filter screen 25, the driving mechanism 23 is suitable for driving the pulping knife 24 to rotate, a water inlet 221 is arranged on the cleaning cylinder 22, the water inlet 221 is communicated with a water supply device, a drain outlet 222 is arranged at the bottom of the cleaning cylinder 22, a discharge outlet 223 is arranged on the side wall of the cleaning cylinder 22, and the liquid level in the cleaning cylinder 22 is higher than the discharge outlet 223.
The driving mechanism 23 drives the pulping knife 24 to rotate, and in the rotating process, the water flow in the cleaning cylinder 22 is similar to the water flow in the hydraulic pulping machine in the prior art, namely, the pulping knife 24 in the cleaning cylinder 22 can drive the water flow of the cleaning cylinder 22 to move in the rotating process, the water flow can be decomposed into two parts, one part flows from bottom to top along the inner wall of the cleaning cylinder 22, flows to the central area from the peripheral area at the upper part, and then sinks to the pulping knife 24 from the central area, so that a circulating flow in the vertical direction is formed; while the other part is formed into a horizontal rotational flow. That is, the invention cleans broken plastic by forming circulating water flow in the cleaning cylinder 22, which does not need other mechanical parts to contact with the plastic, so that the broken plastic can form strong circulating water flow in the cleaning cylinder 22 by increasing the rotating speed of the pulping knife 24, the broken plastic is impacted by the circulating water flow in the cleaning cylinder 22, the plastic can be cleaned more cleanly, and the broken plastic can move from the water surface to the water bottom and then from the water bottom to the water surface along with the water flow because the water flow in the cleaning cylinder 22 has circulating flow in the vertical direction, so that the water utilization rate in the cleaning cylinder 22 is higher, and the plastic can be cleaned by using less water quantity. The cleaning is primary cleaning.
In addition, it should be understood that a small amount of paper, leaves and other impurities are inevitably mixed in the crushed plastic, and the plastic cleaning separator also has the function of hydraulic pulping, so that the mixed paper and leaves become pasty, and the liquid level in the cleaning cylinder 22 is higher than the discharge hole 223, so that the liquid in the cleaning cylinder 22 flows out from the discharge hole 223, and the mesh of the inclined screen 26 is 60-80 meshes, which is suitable for separating the material and sewage flowing out from the hydraulic cleaning unit, wherein the sewage flows out from the mesh of the inclined screen 26, and the material slides downwards along the upper surface of the inclined screen 26. Since the inclined screen 26 is inclined, the material can slide down along the upper surface of the inclined screen 26, and since the inclined screen 26 is provided with mesh openings, the sewage can flow down from the mesh openings, i.e., the inclined screen 26 separates the material from the sewage in such a manner. The drain outlet 222 at the bottom of the cleaning tank 22 can sink the heavy impurities such as the cleaned silt and the like and discharge the heavy impurities out of the cleaning tank 22, and the filter screen 25 has the function of avoiding the plastic from flowing out of the drain outlet 222.
The settling pond is adapted to float-sort material discharged from the upper surface of the screen 26 to separate floats as well as sediment. The material discharged from the upper surface of the screen 26 is plastic and cloth, and the kinds of plastic are also classified into various kinds, wherein for polyvinyl chloride, it is separated from other kinds of plastic, otherwise, the subsequent plastic re-production is affected, and since polyvinyl chloride has a specific gravity greater than that of water, a sedimentation tank is used, so that polyvinyl chloride can be settled at the bottom of the sedimentation tank, and for cloth, after water absorption, it is settled at the bottom of the sedimentation tank, so that the required plastic can be separated.
The oil removal tank is suitable for chemically removing oil from the floaters separated by the sedimentation tank. Because some kitchen garbage can be doped in the household garbage, some oil stains can be inevitably stained on plastics, and in order to avoid the influence of the oil stains on subsequent plastic remanufacturing, the oil stains are removed through an oil removal tank.
The cleaning unit is suitable for cleaning the materials passing through the oil removal tank. I.e. the cleaning unit is adapted to clean the plastic after the oil stains have been removed again.
The sewage treatment unit is adapted to treat sewage flowing out of the meshes of the inclined screen 26 and sewage in the oil removal tank to obtain clean water. Wherein the fresh water is adapted to be supplied to the washing unit. The compression unit is suitable for extruding the material cleaned by the cleaning unit, and the extruded water is suitable for being supplied to the hydraulic cleaning unit. Thus, the sewage treatment unit realizes the recycling of water resources, and is very environment-friendly.
The plastic particle manufacturing unit is suitable for manufacturing the material extruded by the compression unit into plastic particles.
Preferably, referring to fig. 2-4, the inner wall of the screen cylinder 11 is further provided with a plurality of bag-breaking knife groups 13, the bag-breaking knife groups 13 are composed of at least two bag-breaking knives arranged in parallel so as to form a bearing platform on the knife tip part of the bag-breaking knife groups 13, and the bag-breaking knife groups 13 are obliquely arranged along the advancing direction of the screen cylinder 11 of the material, and the axle centers of the pre-screen cylinder 11 are basically level in the radial direction. The inner wall of the screen drum 11 is provided with a plurality of bag breaking knife groups 13, and the bag breaking knife groups 13 are composed of at least two bag breaking knives which are arranged in parallel so as to form a bearing platform on the knife tip part of the bag breaking knife groups 13, thereby being convenient for throwing materials forwards; the bag breaking knife group 13 is obliquely arranged along the advancing direction of the materials so as to facilitate the materials to be pushed forward further; the bearing platform is basically level with the axle center of the screen drum 11 in the radial direction, so that materials on the bearing platform pass near the axle center when being thrown off, and lighter flaky objects are easily blown out. Specifically, the screen drum 11 is obliquely arranged for 5-10 degrees, the bag breaking knife group 13 consists of 4 bag breaking knives, and the inclination angle of the bag breaking knife group 13 is 10-30 degrees. More specifically, the screen cylinder 11 is inclined at 8 °, and the bag-breaking blade group 13 is inclined at 20 °. The specific structure of the embodiment is the best implementation mode obtained through multiple tests, and the material throwing and advancing are smoother.
Preferably, the discharge end of the screen cylinder 11 is also provided with a spiral guide plate 14. A spiral guide plate 14 is provided at the discharge end to assist in the discharge of the material.
Preferably, referring to fig. 5, the water inlet 221 communicates with the water supply device through a water inlet pipe 27, and a water inlet valve 271 is provided on the water inlet pipe 27; the drain outlet 222 is communicated with a drain pipe 28, and a drain valve 281 is arranged on the drain pipe 28.
Preferably, referring to fig. 6, the adsorption unit is a negative pressure adsorption trap including a turbo-type high pressure fan 31, a circulation air inlet pipe 32, an injection pipe 35, and a cyclone trap 33; the upper portion of whirlwind trap 33 is cylinder barrel 331, the lower part of whirlwind trap 33 is round platform barrel 332, the upper end diameter of round platform barrel 332 is greater than its lower extreme diameter, the upper end of round platform barrel 332 is connected with the lower extreme of cylinder barrel 331, the upper end of cylinder barrel 331 is provided with the top cap, be provided with cylinder tuber pipe 34 on the top cap, cylinder tuber pipe 34 and the coaxial setting of cylinder barrel 331, turbine formula high-pressure fan 31's air inlet end communicates with cylinder tuber pipe 34 through circulation tuber pipe 32, turbine formula high-pressure fan 31's air-out end communicates with cylinder barrel 331 through injection pipe 35, the air current in the injection pipe 35 is suitable for getting into cylinder barrel 331 along the tangential direction of cylinder barrel 331, negative pressure absorption mouth 351 has been seted up on the injection pipe 35.
The ejector 35 is provided with a negative pressure adsorption port 351, when air in the ejector 35 flows, negative pressure is formed at the negative pressure adsorption port 351, so that the negative pressure adsorption port 351 can suck plastic dust and crushed paper into the ejector 35, and the plastic dust and crushed paper enter the cyclone collector 33 along with air flow in the ejector 35, and the principle of the cyclone collector 33 is similar to that of a cyclone dust removal tower, so that after the plastic dust and crushed paper enter the cyclone collector 33, the plastic dust and crushed paper move downwards along the inner walls of the cylindrical barrel 331 and the circular truncated cone barrel 332 in a spiral manner, and finally fall out from the lower end of the circular truncated cone barrel 332, and separation and trapping of the plastic dust and crushed paper are completed, wherein trapping refers to that light matters enter the cyclone collector 33 after separation. In addition, in the utility model, the air inlet end of the turbine type high-pressure fan 31 is communicated with the cylindrical air outlet pipe 34 through the circulating air inlet pipe 32, namely, the turbine type high-pressure fan generates suction force to the interior of the cyclone collector 33, so that the pressure rise in the cyclone collector 33 is avoided, the negative pressure adsorption effect at the negative pressure adsorption port 351 is ensured, and in such a communication mode, a circulating air flow is formed among the circulating air inlet pipe 32, the turbine type high-pressure fan 31, the jet pipe 35 and the cyclone collector 33, so that under the condition that the turbine type high-pressure fan 31 with the same power is used, the jet pipe 35 has larger pressure, and the adsorption effect of the negative pressure adsorption port 351 is further improved.
The foregoing is only illustrative of the present invention and is not to be construed as limiting the scope of the invention, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present invention and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the invention.
Claims (1)
1. The utility model provides a sorting and renewable system of plastics in domestic waste which characterized in that includes:
a bag breaking unit adapted to break plastic bags in household garbage;
the cylinder sorting screening machine comprises a screen cylinder and a driving mechanism for driving the screen cylinder to rotate, wherein the screen cylinder is obliquely arranged, one end of the screen cylinder, which is higher, is a feeding end, one end of the screen cylinder, which is lower, is a discharging end, screen holes are formed in the wall of the middle section of the screen cylinder, and a blowing device is further arranged at the feeding end of the screen cylinder and used for blowing out sheet-shaped objects with lighter mass in the screen cylinder from the discharging end;
The adsorption unit is suitable for carrying out negative pressure adsorption sorting on the materials passing through the sieve holes so as to sort out plastic scraps and crushed paper;
A wind separation unit adapted to wind-separate the material which does not pass through the mesh and is not blown out by the blower device, so as to separate out plastics and paper;
The sand remover is suitable for removing sand from the materials separated by the adsorption unit, the materials separated by the air separation unit and the materials blown out from the discharge end of the screen drum;
the paper-plastic separator is suitable for separating paper from plastic of the material subjected to sand removal by the sand remover so as to separate out plastic and cloth;
a plastic crusher, which is suitable for crushing the materials separated by the paper-plastic separator;
a hydraulic cleaning unit which is suitable for cleaning the materials passing through the plastic crusher;
the mesh of the inclined screen is 60-80 meshes, and the inclined screen is suitable for separating materials flowing out of the hydraulic cleaning unit from sewage, wherein the sewage flows out of the mesh of the inclined screen, and the materials slide downwards along the upper surface of the inclined screen;
a settling tank adapted to float-sort material discharged from an upper surface of the inclined screen to sort out floats as well as sediments;
An oil removal tank adapted to chemically remove oil from the floats sorted by the sedimentation tank;
a cleaning unit adapted to clean the material passing through the oil removal tank;
a sewage treatment unit adapted to treat sewage flowing out of the mesh openings of the inclined screen and sewage in the oil removal tank to obtain clear water; wherein clean water is suitable for being supplied to the cleaning unit for cleaning;
A compression unit adapted to compress the material passing through the washing unit; the extruded water is suitable for being supplied to the hydraulic cleaning unit;
The plastic particle manufacturing unit is suitable for manufacturing the material extruded by the compression unit into plastic particles;
The inner wall of the screen cylinder is also provided with a plurality of bag breaking knife groups, each bag breaking knife group consists of at least two bag breaking knives which are arranged in parallel, so that a bearing platform is formed on the knife tip part of each bag breaking knife group, each bag breaking knife group is obliquely arranged along the advancing direction of the screen cylinder of materials, the bearing platform is basically flush with the axis of the pre-screen cylinder in the radial direction, the discharge end of the screen cylinder is also provided with a spiral guide plate, the screen cylinder is obliquely arranged by 5-10 degrees, the screen cylinder is obliquely arranged by 8 degrees, each bag breaking knife group consists of 4 bag breaking knives, the inclination angle of each bag breaking knife group is 10-30 degrees, the inclination angle of each bag breaking knife group is 20 degrees, the hydraulic cleaning unit is a plastic cleaning separator, each plastic cleaning separator comprises a base, a cleaning cylinder, a driving mechanism and a pulp crushing knife, the base is suitable for supporting the cleaning cylinder, the pulp crushing knife is positioned in the cleaning cylinder and above the cleaning cylinder, the pulp crushing knife is suitable for driving the water inlet, the pulp inlet is provided with a water inlet, the cleaning cylinder is provided with a water inlet, the water inlet is communicated with the water inlet, the water inlet is arranged on the cleaning cylinder, the water inlet is communicated with the water inlet, the water inlet is communicated with the water outlet, and the water outlet is communicated with the water inlet, and the water outlet is communicated with the water outlet; the sewage outlet is communicated with a sewage pipe, a sewage valve is arranged on the sewage pipe, the adsorption unit is a negative pressure adsorption catcher, and the negative pressure adsorption catcher comprises a turbine type high-pressure fan, a circulating air inlet pipe, a jet pipe and a cyclone catcher; the upper portion of whirlwind trap is the cylinder barrel, the lower part of whirlwind trap is the round platform barrel, the upper end diameter of round platform barrel is greater than its lower extreme diameter, the upper end of round platform barrel with the lower extreme of cylinder barrel is connected, the upper end of cylinder barrel is provided with the top cap, be provided with the cylinder on the top cap and go out the tuber pipe, the cylinder go out the tuber pipe with the cylinder barrel is coaxial to be set up, turbine high-pressure fan's air inlet end pass through the circulation air-supply line with the cylinder goes out the tuber pipe intercommunication, turbine high-pressure fan's air-supply end pass through the jet pipe with cylinder barrel intercommunication, the air current in the jet pipe is suitable for followed the tangential direction of cylinder barrel gets into the cylinder barrel, the negative pressure absorption mouth has been seted up on the jet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465238.4A CN110238993B (en) | 2019-05-30 | System for sorting and regenerating plastics in household garbage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910465238.4A CN110238993B (en) | 2019-05-30 | System for sorting and regenerating plastics in household garbage |
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| CN110238993A CN110238993A (en) | 2019-09-17 |
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