CN118456704A - Plastic particle production equipment and production method for plastic recovery - Google Patents

Abstract

The invention discloses plastic particle production equipment and a production method for plastic recovery, and relates to the field of plastic recovery, wherein a melt filtering component is arranged between an extruder and a granulator, and comprises a filtering unit, a cleaning unit, a centrifugal unit and a reflux unit; the filter unit comprises a filter discharging pipe, a filter shell and a filter cylinder capable of rotating, wherein the filter cylinder is arranged in the filter shell, molten plastics can be introduced between the filter shell and the filter cylinder by the extruder, the filter discharging pipe is arranged in the filter cylinder, and the filter discharging pipe can convey the molten plastics in the filter cylinder to the granulator. The production quality of the recycled plastic is improved, the quality of the formed plastic is prevented from being reduced due to the fact that impurities are mixed in the molten plastic, the molten plastic wrapped by the impurities can be separated, the recycling yield of the molten plastic is improved, a large amount of molten plastic cannot be wrapped when the impurities are separated, and the recovery rate is reduced.

Description

Plastic particle production equipment and production method for plastic recovery

Technical Field

The invention relates to the field of plastic recovery, in particular to plastic particle production equipment for plastic recovery and a production method thereof.

Background

The plastic recycling is not only beneficial to reducing the environmental leakage of the plastic garbage, improving the safe disposal level of the tail end of the plastic garbage, but also promoting the management of the whole process of plastic product production, circulation, use, recycling and disposal, embodying the cyclic economy concept of reduction, reutilization and reclamation, being beneficial to optimizing the resource allocation and improving the resource utilization efficiency, promoting the green, cyclic and low-carbon development of the plastic industry, and the basic flow of the plastic recycling generally comprises the following key steps: collecting and classifying, cleaning and crushing, sorting and drying, and regenerating and granulating.

Chinese patent CN105437406B discloses a plastic particle production unit, which has compact design, energy saving and high efficiency, is suitable for the plastic particle preparation industry, and mainly comprises a feeding stirrer, an extruder and a cooling mechanism, wherein the feeding stirrer is responsible for mixing raw materials, and the mixed raw materials are sent into the extruder through a discharge port. The extruder comprises a barrel, a head die equipped with a rotary cutter for cutting the extruded plastic strands, and a screw. The cooling mechanism is used for rapidly cooling the extruded plastic strips through a cooling bin and a condensing fan, and a discharge port is arranged at the bottom of the cooling bin so as to collect cooled plastic particles;

Chinese patent application CN118107087a discloses a plastic particle production device, which implements effective kneading and separation of plastic particles through an internal kneading plate and eccentric wheel structure, promotes air circulation, and improves drying efficiency. The equipment also comprises a fan blade disc for generating air flow, accelerating the discharge of humid air and turning particles by the shovel plate, ensuring uniform drying, and having compact overall design and aiming at improving the drying effect and the production efficiency.

The above-mentioned patents and prior art also have the following drawbacks:

In the plastic particle production equipment in the prior art, when the recycled plastic is pelletized, as the recycled plastic is provided with some metal and refractory impurities, although crushing, screening and cleaning are carried out, some impurities adhered to the plastic are difficult to clean and cannot follow the melting of the plastic, so that the quality of the molten plastic is reduced after extrusion and pelletizing, the performance of the plastic is reduced, the impurities mixed in the molten plastic are easy to block extrusion holes, and the production is interrupted.

Accordingly, the present application provides a plastic particle production apparatus and a production method for plastic recycling, which meet the demand.

Disclosure of Invention

The application aims to provide plastic particle production equipment and a production method for plastic recovery, which are used for improving the production quality of recovered plastic, preventing the quality of the plastic from being reduced after molding due to the fact that impurities are mixed in the molten plastic, separating the molten plastic coated with the impurities, improving the recovery yield of the molten plastic, and preventing a large amount of molten plastic from being coated during the separation of the impurities, so that the recovery rate is reduced.

In order to achieve the above purpose, the present application provides the following technical solutions: the plastic particle production equipment for plastic recycling comprises an extruder and a granulator, wherein a melt filtering component is arranged between the extruder and the granulator, and comprises a filtering unit, a cleaning unit, a centrifugal unit and a reflux unit;

The filtering unit comprises a filtering discharging pipe, a filtering shell and a filtering barrel capable of rotating, the filtering barrel is arranged in the filtering shell, molten plastics can be introduced between the filtering shell and the filtering barrel by the extruder, the filtering discharging pipe is arranged in the filtering barrel, and the filtering discharging pipe can convey the molten plastics in the filtering barrel into the granulator;

The cleaning unit comprises a cleaning scraper and a cleaning discharging pipe, the centrifugal unit comprises a centrifugal cylinder and a collecting cylinder, and the cleaning scraper is propped against the outer ring of the filter cylinder; the cleaning discharging pipe can be used for leading impurities scraped by the cleaning scraper and molten plastics into the centrifugal barrel;

The centrifugal cylinder can rotate in the collecting cylinder, and the backflow unit can convey molten plastic in the collecting cylinder between the filtering shell and the filtering cylinder;

the outer lane of cartridge filter has seted up the filtration pore, the centrifugation hole has been seted up on the centrifugation section of thick bamboo, the centrifugation section of thick bamboo is the toper setting.

Preferably, a pushing unit is arranged between the centrifugal unit and the filtering unit, the pushing unit comprises a pushing shell, a pushing motor and a pushing screw shaft, the pushing screw shaft is rotationally connected in the pushing shell, the pushing motor is fixedly arranged on the pushing shell, a pushing groove in spiral arrangement is formed in the pushing screw shaft, the pushing screw shaft is fixedly arranged at the output end of the pushing motor, the cleaning discharging pipe is fixedly communicated with the pushing shell, and the pushing shell is communicated with the centrifugal cylinder and rotationally connected.

Preferably, the reflux unit includes backward flow advance pipe, backward flow casing, backward flow screw axis, backward flow motor and backward flow exit tube, the one end that backward flow advances the pipe with the cylinder is fixed and the intercommunication, the other end that backward flow advances the pipe with the backward flow casing is fixed and the intercommunication, the backward flow screw axis rotates to be connected in the backward flow casing, the backward flow screw axis is last to have seted up the reflux groove that the spiral set up, backward flow motor fixed mounting is in on the backward flow casing, backward flow screw axis fixed mounting is in the output of backward flow motor, backward flow exit tube fixed mounting is in on the backward flow casing.

Preferably, the filtering unit further comprises a fixed shell, a filtering feeding pipe, a filtering motor and a driving belt unit, the filtering shell is fixedly arranged in the fixed shell, the filtering motor is fixedly arranged on the fixed shell, one end of the filtering feeding pipe is fixed and communicated with the output end of the extruder, the other end of the filtering feeding pipe penetrates through the fixed shell and is communicated with the filtering cylinder, one end of the backflow pipe is fixedly arranged on the filtering feeding pipe and is communicated with the filtering feeding pipe, and the interval between the filtering cylinder and the cleaning discharging pipe is gradually reduced from the filtering feeding pipe to the filtering cylinder;

The driving belt unit comprises a driving belt pulley, a driving driven belt pulley, a driving belt and a driving shaft, the driving shaft is fixedly arranged on the filter cylinder, the driving belt pulley is fixedly arranged at the output end of the filter motor, the driving driven belt pulley is fixedly arranged on the driving shaft, and the driving belt is connected to the driving belt pulley and the driving driven belt pulley.

Preferably, the centrifugal unit further comprises a discharging shell and a centrifugal discharging pipe, wherein the discharging shell is fixedly arranged on the collecting cylinder, the discharging shell is communicated with the centrifugal cylinder, and the centrifugal discharging pipe is fixedly communicated with the bottom of the discharging shell;

The centrifugal unit further comprises a driving plate, a centrifugal motor and a centrifugal belt unit, wherein the driving plate is fixedly arranged at one end of the centrifugal cylinder, the driving plate is rotationally connected to the collecting cylinder, the centrifugal belt unit comprises a centrifugal driving belt pulley, a centrifugal driven belt pulley and a centrifugal belt, the centrifugal driving belt pulley is fixedly arranged on the driving plate, the centrifugal driven belt pulley is fixedly arranged at the output end of the centrifugal motor, and the centrifugal belt is connected to the centrifugal driving belt pulley and the centrifugal driven belt pulley.

Preferably, an extrusion cooling unit is further arranged between the filtering unit and the granulator, the extrusion cooling unit comprises an extrusion feeding pipe, an extrusion die and a cooling shell, extrusion holes which are horizontally arranged are formed in the extrusion die, the extrusion feeding pipe is fixed and communicated with the extrusion die, the extrusion feeding pipe is rotationally connected with the filtering discharging pipe, and the extrusion die is located above one end of the cooling shell.

Preferably, the top of cooling casing sets up for the opening, extrude the cooling unit still including a plurality of depression bars and guide arm, a plurality of the depression bar rotates to be connected on the inner wall of cooling casing, the cooling casing is kept away from extrusion die's one end fixed mounting has the fixed plate, the guide arm rotates to be connected on the fixed plate.

Preferably, the extrusion cooling unit further comprises a support frame, two traction rods, two traction gears and a traction motor, wherein the two traction rods are rotatably connected to the support frame, the two traction gears are respectively and fixedly installed on the traction rods, the output end of the traction motor is connected with one traction gear, and the traction rods are provided with traction grooves corresponding to the extrusion holes.

Preferably, the pelletizer is disposed on a side of the extrusion cooling unit remote from the filtration unit.

The plastic particle production method for plastic recycling uses the plastic particle production equipment for plastic recycling, and comprises the following steps:

adding the raw materials into an extruder, and mixing and melting the raw materials into molten plastics by the extruder;

Molten plastic enters between the filter shell and the filter cartridge, the filter cartridge rotates, the molten plastic flows into the filter cartridge from the filter holes, and the molten plastic in the filter cartridge enters the granulator from the filter discharge pipe for granulating;

the cleaning scraper scrapes off impurities and partial molten plastics on the filter cartridge and enters the centrifugal cartridge through the cleaning discharging pipe;

the centrifugal cylinder rotates to centrifuge the molten plastic in the centrifugal cylinder, the molten plastic enters the collecting cylinder from the centrifugal hole, and impurities are blocked in the centrifugal cylinder;

the molten plastic in the collecting cylinder enters the space between the filtering shell and the filtering cylinder again through the backflow unit;

And (5) discharging impurities in the centrifugal cylinder.

In summary, the invention has the technical effects and advantages that:

1. according to the invention, molten plastic of the extruder is introduced between the filter cartridge and the filter shell, impurities in the molten plastic are filtered by the filter cartridge, so that the production quality of the recycled plastic is improved, and the quality degradation of the plastic after molding due to the fact that the impurities are mixed in the molten plastic is prevented;

2. According to the invention, the cleaning scraper can scrape off impurities on the filter cartridge, so that the filter cartridge can be cleaned, the filter cartridge can be continuously filtered to ensure the filtering efficiency and quality, the filtering efficiency is not reduced due to impurity blockage, and the filter cartridge is not required to be frequently replaced and cleaned;

3. According to the invention, after the impurity of the filter cartridge is scraped by the cleaning scraper, the impurity enters the centrifugal cartridge, the centrifugal cartridge is used for centrifuging the molten plastic wrapped by the impurity into the collecting cartridge, the molten plastic in the collecting cartridge is introduced between the filter cartridge and the filter shell again for circulation, the impurity in the centrifugal cartridge is discharged, the molten plastic wrapped by the impurity can be separated, the recovery yield of the molten plastic is improved, and a large amount of molten plastic cannot be wrapped when the impurity is separated, so that the recovery rate is reduced.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the structure of a pelletizer, melt filter assembly and mounting housing of the present invention;

FIG. 2 is a schematic view of the structure of the pelletizer and extrusion cooling unit of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic view of the structure of the pelletizer, cooling housing, compression bar and guide bar of the present invention;

FIG. 5 is an enlarged view of portion B of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic view of the structure of the extruder, filter unit, centrifugal unit and reflux unit of the present invention;

FIG. 7 is a schematic view of the structure of the extrusion die, the collection canister, the discharge shell and the centrifugal discharge pipe of the present invention;

FIG. 8 is a schematic view of the structure of the filter outlet tube, filter housing and filter cartridge of the present invention;

FIG. 9 is an enlarged view of portion C of FIG. 8 in accordance with the present invention;

FIG. 10 is a schematic view showing the structure of the pushing screw shaft, the centrifugal cylinder and the collecting cylinder in the present invention;

FIG. 11 is a schematic view of the structure of a filter cartridge, a filter discharge tube, a centrifuge bowl and a collection bowl according to the present invention.

In the figure: 1. an extruder; 2. a granulator; 3. a melt filtration assembly; 31. a filtering unit; 311. filtering the discharge pipe; 312. a filter housing; 313. a filter cartridge; 314. a fixed housing; 315. filtering the feeding pipe; 316. filtering the motor; 317. a driving belt unit; 32. a cleaning unit; 321. cleaning a scraper; 322. cleaning a discharge pipe; 33. a centrifugal unit; 331. a centrifugal barrel; 332. a collection cylinder; 333. a discharge shell; 334. centrifuging the discharging pipe; 335. a driving plate; 336. a centrifugal motor; 337. a centrifugal belt unit; 34. a reflow unit; 341. reflux into the tube; 342. a reflow housing; 343. a reflow screw shaft; 344. a reflow motor; 345. a return pipe; 35. a pushing unit; 351. pushing the shell; 352. a pushing motor; 353. pushing the screw shaft; 36. an extrusion cooling unit; 361. extruding a feeding pipe; 362. an extrusion die; 363. cooling the housing; 364. a compression bar; 365. a guide rod; 366. a support frame; 367. a traction rod; 368. a traction gear; 369. a traction motor; 4. a mounting shell; 5. and a fixing frame.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1: 1-11, the plastic particle production equipment for plastic recycling comprises an extruder 1 and a granulator 2, wherein a melt filtering component 3 is arranged between the extruder 1 and the granulator 2, and the melt filtering component 3 comprises a filtering unit 31, a cleaning unit 32, a centrifugal unit 33 and a reflux unit 34;

the filtering unit 31 comprises a filtering discharging pipe 311, a filtering shell 312 and a filtering barrel 313 which can rotate, the filtering barrel 313 is arranged in the filtering shell 312, the extruder 1 can lead molten plastics between the filtering shell 312 and the filtering barrel 313, the filtering discharging pipe 311 is arranged in the filtering barrel 313, and the filtering discharging pipe 311 can convey the molten plastics in the filtering barrel 313 into the granulator 2;

the cleaning unit 32 comprises a cleaning scraper 321 and a cleaning discharging pipe 322, the centrifugal unit 33 comprises a centrifugal barrel 331 and a collecting barrel 332, and the cleaning scraper 321 abuts against the outer ring of the filter barrel 313; the cleaning discharging pipe 322 can introduce impurities scraped by the cleaning scraper 321 and molten plastics into the centrifugal barrel 331;

The centrifuge tube 331 is rotatable within the collection tube 332, and the reflow unit 34 is capable of delivering molten plastic within the collection tube 332 between the filter housing 312 and the filter cartridge 313;

The outer lane of cartridge filter 313 has seted up the filtration pore, has seted up the centrifugation hole on the centrifugation section of thick bamboo 331, and centrifugation section of thick bamboo 331 is the toper setting.

Adding raw materials into an extruder 1, and mixing and melting the raw materials into molten plastics by the extruder 1; molten plastic enters between the filter shell 312 and the filter cartridge 313, the filter cartridge 313 rotates, the molten plastic flows into the filter cartridge 313 from the filter holes, and the molten plastic in the filter cartridge 313 enters the granulator 2 from the filter discharge pipe 311 for granulating; the cleaning scraper 321 scrapes off impurities and part of molten plastic on the filter cartridge 313 and enters the centrifugal barrel 331 through the cleaning discharge pipe 322; the centrifugal cylinder 331 rotates to centrifuge the molten plastic inside, the molten plastic enters the collecting cylinder 332 from the centrifugal hole, and impurities are blocked in the centrifugal cylinder 331; the molten plastic in the collection cartridge 332 reenters between the filter housing 312 and the filter cartridge 313 through the reflow unit 34; the foreign matters in the centrifugal cylinder 331 are discharged through the inclined cylinder wall under the rotation of the centrifugal cylinder 331.

The molten plastic of the extruder 1 is introduced between the filter cartridge 313 and the filter housing 312, and the filter cartridge 313 filters impurities in the molten plastic, thereby improving the production quality of the recycled plastic and preventing the impurities from being mixed in the molten plastic to reduce the quality of the molded plastic.

The cleaning scraper 321 can scrape down the impurity on the cartridge filter 313, clear up the cartridge filter 313, make cartridge filter 313 can continuous filtration and guarantee filtration efficiency and quality, can not be because of the filtration efficiency decline that impurity blocks up and cause, do not need frequent change and cleaning cartridge filter 313.

After the clearance scraper 321 scrapes down the impurity of cartridge filter 313, the impurity gets into the centrifugation section of thick bamboo 331, and the centrifugation section of thick bamboo 331 is with the molten plastics centrifugation of parcel on the impurity to in the collection section of thick bamboo 332, and the molten plastics in the collection section of thick bamboo 332 lets in the circulation between cartridge filter 313 and the filtration shell 312 again, and the impurity ejection of compact in the centrifugation section of thick bamboo 331 can improve the recovery output of molten plastics with the molten plastics separation of parcel on the impurity, can not wrap up a large amount of molten plastics when separating the impurity, leads to the rate of recovery to reduce.

Example 2: referring to fig. 1 to 11, a pushing unit 35 is disposed between the centrifugal unit 33 and the filtering unit 31, the pushing unit 35 includes a pushing housing 351, a pushing motor 352 and a pushing screw shaft 353, the pushing screw shaft 353 is rotatably connected in the pushing housing 351, the pushing motor 352 is fixedly mounted on the pushing housing 351, a pushing groove in a spiral arrangement is formed in the pushing screw shaft 353, the pushing screw shaft 353 is fixedly mounted at an output end of the pushing motor 352, the cleaning discharging pipe 322 is fixedly and communicated with the pushing housing 351, and the pushing housing 351 is communicated and rotatably connected with the centrifugal cylinder 331.

The cleaning scraper 321 scrapes off impurities on the filter drum 313, the impurities enter the pushing shell 351 through the cleaning discharging pipe 322, the pushing motor 352 drives the pushing screw shaft 353 to rotate, the pushing screw shaft 353 drives molten plastic in the pushing shell 351 to move, and the molten plastic is pushed into the centrifugal drum 331.

Example 3: referring to fig. 1 to 11, the reflow unit 34 includes a reflow inlet tube 341, a reflow housing 342, a reflow screw shaft 343, a reflow motor 344 and a reflow outlet tube 345, one end of the reflow inlet tube 341 is fixed and communicated with the collection tube 332, the other end of the reflow inlet tube 341 is fixed and communicated with the reflow housing 342, the reflow screw shaft 343 is rotatably connected in the reflow housing 342, the reflow screw shaft 343 is provided with a reflow groove in a spiral arrangement, the reflow motor 344 is fixedly mounted on the reflow housing 342, the reflow screw shaft 343 is fixedly mounted at an output end of the reflow motor 344, and the reflow outlet tube 345 is fixedly mounted on the reflow housing 342.

The centrifugal barrel 331 is used for centrifuging the molten plastic into the collecting barrel 332, the molten plastic in the collecting barrel 332 moves into the backflow shell 342 through the backflow inlet pipe 341, the backflow motor 344 drives the backflow screw shaft 343 to rotate, the backflow screw shaft 343 drives the molten plastic in the backflow shell 342 to move into the backflow outlet pipe 345, the backflow outlet pipe 345 moves the molten plastic between the filter cartridge 313 and the filter shell 312 for circulating filtration, and the backflow unit 34 pushes the molten plastic to have a certain pressure to enter between the filter cartridge 313 and the filter shell 312 through the backflow screw shaft 343, so that the molten plastic enters the filter cartridge 313 under pressure, and the filtration efficiency is improved.

Example 4: referring to fig. 1 to 11, the filtering unit 31 further includes a fixed housing 314, a filtering feed pipe 315, a filtering motor 316, and a driving belt unit 317, the filtering housing 312 is fixedly installed in the fixed housing 314, the filtering motor 316 is fixedly installed on the fixed housing 314, one end of the filtering feed pipe 315 is fixed and communicated with the output end of the extruder 1, the other end of the filtering feed pipe 315 penetrates through the fixed housing 314 to be communicated with the filtering cartridge 313, one end of a backflow pipe 345 is fixedly installed on the filtering feed pipe 315 and communicated with the filtering feed pipe 315, and the interval between the filtering cartridge 313 from the filtering feed pipe 315 to the cleaning discharge pipe 322 and the filtering cartridge 313 is gradually reduced;

The driving belt unit 317 includes a driving pulley fixedly installed on the filter cartridge 313, a driving driven pulley fixedly installed on the driving shaft at an output end of the filter motor 316, a driving belt connected to the driving pulley and the driving driven pulley, and a driving shaft.

The filter motor 316 drives the drive driving pulley to rotate, the drive driving pulley drives the driving belt to rotate, the driving belt drives the driven pulley to rotate, the driven pulley drives the driving shaft to rotate, the driving shaft drives the filter cartridge 313 to rotate, the filter cartridge 313 is enabled to continuously contact with molten plastics in the filter shell 312 under rotation, the filtering efficiency is improved, meanwhile, the distance between the filter cartridge 313 and the filter cartridge 313 is gradually reduced, and the molten plastics with pressure can be prevented from entering the filter cartridge 313 through the filter feeding pipe 315 to enable the molten plastics to rapidly enter the cleaning discharging pipe 322 to be discharged under the action of the pressure, so that the molten plastics can be fully filtered by the filter cartridge 313.

Example 5: referring to fig. 1 to 11, the centrifugal unit 33 further includes a discharge case 333 and a centrifugal discharge pipe 334, the discharge case 333 is fixedly installed on the collection tube 332, the discharge case 333 is communicated with the centrifugal tube 331, and the centrifugal discharge pipe 334 is fixedly and communicated with the bottom of the discharge case 333;

The centrifugal unit 33 further comprises a driving plate 335, a centrifugal motor 336 and a centrifugal belt unit 337, wherein the driving plate 335 is fixedly arranged at one end of the centrifugal barrel 331, the driving plate 335 is rotatably connected to the collecting barrel 332, the centrifugal belt unit 337 comprises a centrifugal driving belt pulley, a centrifugal driven belt pulley and a centrifugal belt, the centrifugal driving belt pulley is fixedly arranged on the driving plate 335, the centrifugal driven belt pulley is fixedly arranged at the output end of the centrifugal motor 336, and the centrifugal belt is connected to the centrifugal driving belt pulley and the centrifugal driven belt pulley.

The centrifugal motor 336 drives the centrifugal driving pulley to rotate, the centrifugal driving pulley drives the centrifugal belt to move, the centrifugal belt drives the centrifugal driven pulley to rotate, the centrifugal driven pulley drives the driving plate 335 to turn around, the driving plate 335 drives the centrifugal cylinder 331 to rotate, molten plastics inside the centrifugal cylinder 331 rotates are centrifuged, the molten plastics move into the collecting cylinder 332 through the centrifugal holes, impurities in the molten plastics are blocked in the centrifugal cylinder 331, and the inclined inner wall of the centrifugal cylinder 331 rotates for discharging.

Example 6: referring to fig. 1-11, an extrusion cooling unit 36 is further disposed between the filtering unit 31 and the granulator 2, the extrusion cooling unit 36 includes an extrusion feeding pipe 361, an extrusion die 362 and a cooling housing 363, extrusion holes horizontally arranged are formed in the extrusion die 362, the extrusion feeding pipe 361 is fixed to and communicated with the extrusion die 362, the extrusion feeding pipe 361 is rotationally connected with the filtering discharging pipe 311, and the extrusion die 362 is located above one end of the cooling housing 363.

The extruder 1 leads the molten plastic to have a certain pressure and flow into the filter cylinder 313, the molten plastic in the filter cylinder 313 enters the extrusion feeding pipe 361 from the filtering discharging pipe 311 and enters the extrusion die 362 after a certain pressure is maintained, the extrusion die 362 continuously extrudes the molten plastic into a strip shape, the molten plastic transfers heat to the extrusion die 362, the extrusion die 362 radiates heat to cool the molten plastic preliminarily, the fluidity of the molten plastic is reduced, the strip-shaped molten plastic enters the cooling shell 363 after extrusion, the cooling shell 363 is provided with cooling liquid, and the molten plastic enters the cooling liquid to be cooled rapidly and hardened for molding.

Example 7: referring to fig. 1 to 11, the top of the cooling housing 363 is provided with an opening, the extrusion cooling unit 36 further includes a plurality of compression bars 364 and a guide rod 365, the plurality of compression bars 364 are rotatably connected to the inner wall of the cooling housing 363, a fixing plate is fixedly mounted at one end of the cooling housing 363 away from the extrusion die 362, and the guide rod 365 is rotatably connected to the fixing plate.

The strip-shaped plastic in the cooling housing 363 is located below the pressing rod 364, the pressing rod 364 limits the strip-shaped plastic in the cooling liquid in the cooling housing 363, the strip-shaped plastic cannot float on the cooling liquid, the cooling effect is improved, the strip-shaped plastic is located above the guide rod 365, and the strip-shaped plastic is guided to the outside of the cooling housing 363.

Example 8: referring to fig. 1-11, the extrusion cooling unit 36 further includes a support frame 366, two traction rods 367, two traction gears 368 and a traction motor 369, the two traction rods 367 are rotatably connected to the support frame 366, the two traction gears 368 are respectively and fixedly installed on the traction rods 367, an output end of the traction motor 369 is connected with one of the traction gears 368, and traction grooves are formed in the traction rods 367 corresponding to extrusion holes.

The strip plastic passes through between two traction rods 367, a traction motor 369 drives one traction gear 368 to rotate, the traction gear 368 drives the other traction gear 368 to rotate, the rotation directions of the two traction gears 368 are opposite, the traction gears 368 take the corresponding traction rods 367 to turn around, the two traction rods 367 drag the strip plastic above, the strip plastic is moved into the granulator 2, and the granulator 2 cuts the strip plastic into granules.

Example 9: referring to fig. 1 to 11, the pelletizer 2 is disposed on a side of the extrusion cooling unit 36 remote from the filtration unit 31.

The plastic particle production method for plastic recycling uses the plastic particle production equipment for plastic recycling, and comprises the following steps:

adding raw materials into an extruder 1, and mixing and melting the raw materials into molten plastics by the extruder 1;

Molten plastic enters between the filter shell 312 and the filter cartridge 313, the filter cartridge 313 rotates, the molten plastic flows into the filter cartridge 313 from the filter holes, and the molten plastic in the filter cartridge 313 enters the granulator 2 from the filter discharge pipe 311 for granulating;

The cleaning scraper 321 scrapes off impurities and part of molten plastic on the filter cartridge 313 and enters the centrifugal barrel 331 through the cleaning discharge pipe 322;

The centrifugal cylinder 331 rotates to centrifuge the molten plastic inside, the molten plastic enters the collecting cylinder 332 from the centrifugal hole, and impurities are blocked in the centrifugal cylinder 331;

the molten plastic in the collection cartridge 332 reenters between the filter housing 312 and the filter cartridge 313 through the reflow unit 34;

The impurities in the centrifuge tube 331 are discharged.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims (10)

1. The utility model provides a plastics granule production facility for plastic recycling, includes extruder and granulator, its characterized in that: a melt filtering component is further arranged between the extruder and the granulator, and comprises a filtering unit, a cleaning unit, a centrifugal unit and a reflux unit;

The filtering unit comprises a filtering discharging pipe, a filtering shell and a filtering barrel capable of rotating, the filtering barrel is arranged in the filtering shell, molten plastics can be introduced between the filtering shell and the filtering barrel by the extruder, the filtering discharging pipe is arranged in the filtering barrel, and the filtering discharging pipe can convey the molten plastics in the filtering barrel into the granulator;

The cleaning unit comprises a cleaning scraper and a cleaning discharging pipe, the centrifugal unit comprises a centrifugal cylinder and a collecting cylinder, and the cleaning scraper is propped against the outer ring of the filter cylinder; the cleaning discharging pipe can be used for leading impurities scraped by the cleaning scraper and molten plastics into the centrifugal barrel;

The centrifugal cylinder can rotate in the collecting cylinder, and the backflow unit can convey molten plastic in the collecting cylinder between the filtering shell and the filtering cylinder;

the outer lane of cartridge filter has seted up the filtration pore, the centrifugation hole has been seted up on the centrifugation section of thick bamboo, the centrifugation section of thick bamboo is the toper setting.

2. The plastic particle production apparatus for plastic recycling according to claim 1, wherein: the centrifugal filter comprises a centrifugal unit, and is characterized in that a pushing unit is arranged between the centrifugal unit and the filtering unit, the pushing unit comprises a pushing shell, a pushing motor and a pushing screw shaft, the pushing screw shaft is rotationally connected in the pushing shell, the pushing motor is fixedly arranged on the pushing shell, a pushing groove which is spirally arranged is formed in the pushing screw shaft, the pushing screw shaft is fixedly arranged at the output end of the pushing motor, a cleaning discharging pipe is fixedly communicated with the pushing shell, and the pushing shell is communicated with the centrifugal cylinder and rotationally connected.

3. The plastic particle production apparatus for plastic recycling according to claim 1, wherein: the reflux unit includes backward flow advance pipe, backward flow casing, backward flow screw axis, backward flow motor and backward flow exit tube, the one end that backward flow advances the pipe with the collection tube is fixed and the intercommunication, the other end that backward flow advances the pipe with the backward flow casing is fixed and the intercommunication, the backward flow screw axis rotates to be connected in the backward flow casing, the backward flow screw axis is last to have seted up the reflux groove that the spiral set up, backward flow motor fixed mounting is in on the backward flow casing, backward flow screw axis fixed mounting is in the output of backward flow motor, backward flow exit tube fixed mounting is in on the backward flow casing.

4. A plastic particle production apparatus for plastic recycling according to claim 3, wherein: the filter unit further comprises a fixed shell, a filter feeding pipe, a filter motor and a driving belt unit, wherein the filter shell is fixedly arranged in the fixed shell, the filter motor is fixedly arranged on the fixed shell, one end of the filter feeding pipe is fixed and communicated with the output end of the extruder, the other end of the filter feeding pipe penetrates through the fixed shell and is communicated with the filter cartridge, one end of the return flow pipe is fixedly arranged on the filter feeding pipe and is communicated with the filter feeding pipe, and the interval between the filter feeding pipe and the cleaning discharging pipe is gradually reduced;

The driving belt unit comprises a driving belt pulley, a driving driven belt pulley, a driving belt and a driving shaft, the driving shaft is fixedly arranged on the filter cylinder, the driving belt pulley is fixedly arranged at the output end of the filter motor, the driving driven belt pulley is fixedly arranged on the driving shaft, and the driving belt is connected to the driving belt pulley and the driving driven belt pulley.

5. The plastic particle production apparatus for plastic recycling according to claim 1, wherein: the centrifugal unit further comprises a discharging shell and a centrifugal discharging pipe, the discharging shell is fixedly arranged on the collecting cylinder, the discharging shell is communicated with the centrifugal cylinder, and the centrifugal discharging pipe is fixedly communicated with the bottom of the discharging shell;

The centrifugal unit further comprises a driving plate, a centrifugal motor and a centrifugal belt unit, wherein the driving plate is fixedly arranged at one end of the centrifugal cylinder, the driving plate is rotationally connected to the collecting cylinder, the centrifugal belt unit comprises a centrifugal driving belt pulley, a centrifugal driven belt pulley and a centrifugal belt, the centrifugal driving belt pulley is fixedly arranged on the driving plate, the centrifugal driven belt pulley is fixedly arranged at the output end of the centrifugal motor, and the centrifugal belt is connected to the centrifugal driving belt pulley and the centrifugal driven belt pulley.

6. The plastic particle production apparatus for plastic recycling according to claim 4, wherein: still be provided with between the filter unit with the granulator and extrude cooling unit, extrude cooling unit including extruding unloading pipe, extrusion die and cooling shell, the extrusion hole of horizontal arrangement has been seted up on the extrusion die, extrude unloading pipe with extrusion die is fixed and the intercommunication, extrude unloading pipe with filter discharging pipe rotates to be connected, extrusion die is located cooling shell's one end top.

7. The plastic particle production apparatus for plastic recycling according to claim 6, wherein: the top of cooling shell sets up for the opening, extrude the cooling unit still including a plurality of depression bars and guide arm, a plurality of the depression bar rotates to be connected on the inner wall of cooling shell, the cooling shell is kept away from extrusion die's one end fixed mounting has the fixed plate, the guide arm rotates to be connected on the fixed plate.

8. The plastic particle production apparatus for plastic recycling according to claim 7, wherein: the extrusion cooling unit further comprises a support frame, two traction rods, two traction gears and a traction motor, wherein the two traction rods are rotationally connected to the support frame, the two traction gears are respectively and fixedly installed on the traction rods, the output end of the traction motor is connected with one traction gear, and traction grooves are formed in the traction rods corresponding to the extrusion holes.

9. The plastic particle production apparatus for plastic recycling according to claim 8, wherein: the granulator is arranged on one side of the extrusion cooling unit away from the filtering unit, the extruder and the melt filtering component are arranged in the installation shell, a fixing frame is fixedly arranged in the installation shell, and the fixing shell, the cooling shell, the pushing shell, the backflow shell, the collecting cylinder and the centrifugal motor are fixedly arranged on the fixing frame.

10. A plastic particle production method for plastic recycling, using the plastic particle production apparatus for plastic recycling according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:

adding the raw materials into an extruder, and mixing and melting the raw materials into molten plastics by the extruder;

Molten plastic enters between the filter shell and the filter cartridge, the filter cartridge rotates, the molten plastic flows into the filter cartridge from the filter holes, and the molten plastic in the filter cartridge enters the granulator from the filter discharge pipe for granulating;

the cleaning scraper scrapes off impurities and partial molten plastics on the filter cartridge and enters the centrifugal cartridge through the cleaning discharging pipe;

the centrifugal cylinder rotates to centrifuge the molten plastic in the centrifugal cylinder, the molten plastic enters the collecting cylinder from the centrifugal hole, and impurities are blocked in the centrifugal cylinder;

the molten plastic in the collecting cylinder enters the space between the filtering shell and the filtering cylinder again through the backflow unit;

And (5) discharging impurities in the centrifugal cylinder.