A PET bottle flake impurity removal device

Abstract

The application discloses a PET bottle piece impurity removing device and relates to the technical field of PET bottle pieces, which comprises a ring belt and a first screening box, a plurality of positioning wheels are symmetrically arranged on the inner side of the ring belt, a driving assembly is arranged on one side of the first retainer, a plurality of screening cages are fixed on the inner side of the ring belt at equal intervals, a pressing roller is rotatably arranged in each screening cage, a first cleaning mechanism is arranged on one side of the first retainer, a second cleaning mechanism is arranged in the first screening box, and a third cleaning mechanism is arranged in the second screening box. The pressing roller is rotatably arranged in each screening cage on the ring belt, so that the bottle pieces in the screening cage are dried and impurities are removed; the bottle pieces can be fully brought into frictional contact with the first screening box and the poking roller through revolution and rotation of the poking roller; the bottle pieces are driven into the position of the separating brush roller through rotation of the spiral plate, so that the bottle pieces are washed and impurities are removed again, and the bottle pieces are fully impurity removed.

Description

Technical Field

[0001] This invention relates to the field of PET flake technology, specifically a PET flake impurity removal device. Background Technology

[0002] To improve the efficiency of PET bottle flake processing, most PET bottles are directly put into the crushing device after recycling and crushed into PET bottle flakes. However, after recycling, PET bottles will have dirt and other impurities on their surface. As a result, dirt and other impurities will still be mixed into the PET bottle flakes after crushing. Therefore, the crushed PET bottle flakes need to be cleaned and dried before further processing.

[0003] The announcement number is CN109866356B, which discloses a PET bottle flake waste removal system. This system uses a first stirring mechanism to initially remove dirt between PET bottle flakes, and then a second stirring mechanism to further remove dirt from the surface of the PET bottle flakes, thus making the removal of dirt on the PET bottle flakes more thorough. However, in the above-mentioned waste removal system, during the secondary cleaning of the bottle flakes, the stirring roller generates a vortex, causing the bottle flakes inside the stirring drum to rub against the inner wall of the stirring drum, thereby achieving the effect of removing impurities from the bottle flakes. However, the above system relies solely on the centrifugal force vortex generated by the stirring roller. When the vortex is generated, because the density of the bottle flakes is not very high, the bottle flakes are concentrated in the center of the vortex. Therefore, the bottle flakes are attached to the stirring roller, and the movement of the bottle flakes driven by the vortex for cleaning has a certain degree of randomness, making the cleaning effect of the bottle flakes less than ideal.

[0004] Furthermore, after the bottle flakes are broken into a fixed size, some impurities attached to the flat side are relatively easy to clean when dry. However, when in water, due to the surface tension of the water, some impurities are not easy to clean. The aforementioned waste removal system does not have a component to clean the dried bottle flakes. Instead, the broken bottle flakes are placed directly in the liquid for cleaning, causing some denser impurities to settle at the bottom and be discharged with the bottle flakes, resulting in poor impurity removal effect.

[0005] Based on this, a PET bottle flake impurity removal device is now provided, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0006] The purpose of this invention is to provide a PET bottle flake impurity removal device to solve the problem in the prior art that it is inconvenient to dry and remove impurities from bottle flakes.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A PET bottle flake impurity removal device includes an annular belt and a first screening box. A plurality of positioning wheels are symmetrically and tightly attached to the inner side of the annular belt, and a friction belt is symmetrically arranged on the outer side of the annular belt. Friction wheels are tightly attached to the friction belt at positions corresponding to the positioning wheels. One end of each positioning wheel and friction wheel has a rotating shaft rotatably mounted in a mounting hole on one side of a first retainer. A driving assembly for rotating the annular belt is provided on one side of the first retainer. A plurality of screening cages are fixedly and evenly spaced on the inner side of the annular belt. Each screening cage has a rotatably mounted pressing roller inside, and a rotating sealing plate is rotatably mounted at the feed end of each screening cage. The first retainer… A first cleaning mechanism for removing impurities from bottle flakes is provided on one side of the frame, using a pressing roller. A storage box is provided in the middle of the inner side of the annular belt, and a discharge box is provided above the storage box. The first screening box is fixedly installed inside the impurity removal tank. An installation roller is rotatably installed inside the first screening box, and a retaining plate is symmetrically installed on the installation roller. Several actuating rollers are rotatably installed at equal intervals between the two retaining plates. A second cleaning mechanism for secondary impurity removal of bottle flakes is provided inside the first screening box. A second screening box is connected to the discharge end of the first screening box. A third cleaning mechanism for tertiary impurity removal of bottle flakes is provided inside the second screening box.

[0009] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0010] In one alternative: the drive assembly includes a first motor, and fixed shafts are fixedly provided between the coaxial friction wheels. The friction wheels on the two fixed shafts at the bottom of the annular belt are drive friction wheels. The rotating shafts on one side of the two drive friction wheels are connected by a first belt drive, and the rotating shaft on one side of one drive friction wheel is connected to the output end of the first motor drive via a second belt drive. The first motor is fixedly mounted on one side of the first retainer.

[0011] In one alternative embodiment: the first cleaning mechanism includes a drive wheel and a paddle plate. Drive wheels are fixedly mounted on the rotating shafts at both ends of the pressing roller. A drive belt is positioned vertically on one side of each of the two first retainers. One side of the drive belt is located at the moving position of the drive wheel. Drive rollers and transmission rollers are respectively fitted to both ends of the drive belt. The rotating shafts on one side of the drive rollers and transmission rollers are rotatably mounted within rotating holes on one side of the first retainer. The rotating shafts at the other ends of the drive rollers and transmission rollers are rotatably mounted within rotating holes on one side of the second retainer. The second retainer is fixedly mounted on one side of the first retainer. The rotating shaft on one side of the drive rollers is fixedly connected to the output end of a second motor. The second motor is fixedly mounted on one side of the second retainer. The rotating sealing plate... An extension shaft is fixedly mounted on each rotating shaft. A lever is fixedly mounted on one end of each extension shaft. A circular plate is fixedly mounted on the extension shaft. The circular plate is rotatably mounted inside a fixed tube. The fixed tube is fixed to one side of the screening cage. A torsion spring is provided between one side of the circular plate and one side inside the fixed tube. A first guide plate is provided on both sides of the storage box. The first guide plate is located on the upper inner side of the mounting frame. One end of the mounting frame is fixedly mounted on the bottom end of the first retainer. The other end of the mounting frame is fixedly connected to the storage box. A second guide plate is provided on both sides above the discharge box. The second guide plate is fixedly mounted on one side of the first retainer. Both the first and second guide plates are located within the moving trajectory range of the lever. A collection box is provided below the annular belt.

[0012] In one alternative embodiment: a first baffle plate is closely attached to the discharge end of the storage bin; first guide rails are slidably provided on both sides of the first baffle plate; the first guide rails are fixedly mounted on the storage bin; the first baffle plate is fixedly mounted on the output end of the first electric push rod; the first electric push rod is fixedly mounted on the storage bin; an infrared sensor is fixedly mounted at the bottom inner side of the first retainer at a position corresponding to the two sides of the storage bin; an infrared receiver is fixedly mounted on the mounting bracket at a position corresponding to the position above the infrared sensor; the infrared sensor, the infrared receiver, and the first electric push rod are all electrically connected to the control box; and the control box is fixedly mounted between the two first retainers.

[0013] In one alternative: limiting frames are fixedly provided on both sides of the screening cage, and rollers are symmetrically provided at one end of each limiting frame. A rubber protective layer is provided on the outer side of each roller. The two rollers are respectively in close contact with the inner and outer sides of the positioning frame, and the positioning frame is fixedly provided on one side of the first retainer.

[0014] In one alternative embodiment: the second cleaning mechanism includes gears; gears are fixedly mounted on the rotating shafts at both ends of the actuating roller; internal gear rings are fixedly mounted at both ends of the first screening box corresponding to the gear positions; several gears mesh with two internal gear rings respectively; one rotating shaft of the mounting roller is fixedly connected to the output end of a third motor; the third motor is fixedly mounted on one side of the impurity removal tank; several actuating strips are provided on the actuating roller; a first impurity discharge pipe is connected to the first screening box; the first screening box is connected to the discharge end of the discharge box; the discharge box is fixedly mounted on the storage box; a second baffle plate is symmetrically slidably mounted on one end of the discharge box; a first guide tube is slidably mounted on each of the second baffle plates; the first guide tubes are fixedly mounted on one end of the discharge box; a third baffle plate is symmetrically slidably mounted on one end of the first impurity discharge pipe; the first... Each of the three baffle plates is slidably provided with a second guide tube, and the second guide tube is fixedly provided at one end of the first impurity discharge pipe. The second baffle plate and the third baffle plate are both fixedly provided at one end of the first mounting frame. The two first mounting frames are slidably provided in the first sliding hole on one side of the impurity removal tank. One end of the first mounting frame is fixedly connected to the output end of the second electric push rod. The second electric push rod is fixedly provided on one side of the impurity removal tank. The discharge end of the first screening box is symmetrically provided with a fourth baffle plate. Each of the fourth baffle plates is slidably provided with a third guide tube, and the third guide tube is fixedly provided on the output end of the first screening box. The fourth baffle plate is fixedly provided at one end of the second mounting frame. The second mounting frame is slidably provided in the second sliding hole on one side of the impurity removal tank. The second mounting frame is fixedly provided on the output end of the third electric push rod. The third electric push rod is fixedly provided on one side of the impurity removal tank.

[0015] In one alternative embodiment: the third cleaning mechanism includes a spiral plate fixedly mounted on a mounting shaft, the mounting shaft being rotatably mounted inside a second screening box, the second screening box being fixedly mounted inside a removal tank, one end of the mounting shaft being fixedly connected to the output end of a fourth motor, the fourth motor being fixedly mounted on one side of the removal tank, the other end of the mounting shaft being fixedly provided with a separating brush roller, the separating brush roller being provided with hard bristles, one end of the mounting shaft being fixedly provided with a stirring shaft, the stirring shaft being provided with a plurality of stirring rods, one end of the second screening box being connected to a second waste discharge pipe, and the other end of the second screening box being provided with a water inlet.

[0016] In one alternative: a filter screen is provided at the water inlet of the second screening box, and a scraper is fixed on the mounting shaft, with the scraper in close contact with one end of the second screening box.

[0017] In one alternative: a comb plate is provided inside the second screening box at a position corresponding to the separation brush roller.

[0018] In one alternative: the discharge end of the second screening box is connected to a transmission pipe, the transmission pipe is fixed inside the impurity removal tank, a drive shaft is rotatably installed inside the transmission pipe, one end of the drive shaft is fixedly connected to the output end of the fifth motor, the fifth motor is fixedly installed at one end of the transmission pipe, a dewatering spiral plate is fixedly installed on the drive shaft, the dewatering spiral plate has several through holes, and the pitch of the dewatering spiral plate is gradually decreasing.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention features several screening cages spaced at equal intervals on an annular belt. Each screening cage contains a rotating pressing roller, allowing for automatic loading and unloading when the annular belt rotates the screening cages below the storage bin and above the discharge bin. When the screening cages move to the drive belt position, they drive the pressing rollers to rotate, thus drying and removing impurities from the bottle flakes inside the screening cages. After drying and impurity removal, the bottle flakes enter the first screening box. The rotation and revolution of the rotating rollers ensure sufficient frictional contact between the bottle flakes and the first screening box and the rotating rollers, enhancing the impurity removal effect. After entering the second screening box, the rotating spiral plate drives the bottle flakes to the separation brush roller position for secondary washing and impurity removal, further enhancing the impurity removal effect. The inclusion of a dehydration spiral plate facilitates dehydration of the impurity-removed bottle flakes. The screening cages divide the bottle flakes into several sections for separate impurity removal, reducing the accumulation of bottle flakes and improving the impurity removal effect, thereby increasing the practicality of the PET bottle flake impurity removal device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the internal structure of the impurity removal tank of the present invention.

[0023] Figure 3 This is a schematic diagram of the installation of the screening cage of the present invention.

[0024] Figure 4 This is a schematic diagram of the first guide plate structure of the present invention.

[0025] Figure 5 This is a schematic diagram of the installation of the infrared sensor and infrared receiver of the present invention.

[0026] Figure 6 This is a schematic diagram of the second guide plate structure of the present invention.

[0027] Figure 7 This is a schematic diagram of the pressing roller structure of the present invention.

[0028] Figure 8 This is a schematic diagram of the installation of the actuating roller of the present invention.

[0029] Figure 9 This is a schematic diagram of the installation of the gear and internal gear ring of the present invention.

[0030] Figure 10 This is a schematic diagram of the spiral plate and separating brush roller structure of the present invention.

[0031] Figure 11 This is a schematic diagram of the comb plate structure of the present invention.

[0032] Figure 12 This is a schematic diagram of the dehydration spiral plate structure of the present invention.

[0033] Figure reference numerals: 11 Annular belt, 12 First retainer, 13 Positioning wheel, 14 Friction belt, 15 First motor, 16 Screening cage, 17 Pressing roller, 18 Drive wheel, 19 Drive belt, 20 Second motor, 21 Limiting frame, 22 Positioning frame, 23 Storage box, 24 First electric push rod, 25 Infrared sensor, 26 Infrared receiver, 27 Rotary sealing plate, 28 Paddle plate, 29 First guide plate, 30 Second guide plate, 31 Discharge box, 32 Collection box 33 First screening box, 34 Impurity removal tank, 35 Installation roller, 36 Third motor, 37 Actuating roller, 38 Gear, 39 Internal gear ring, 40 First impurity discharge pipe, 41 Second electric push rod, 42 Third electric push rod, 43 Second screening box, 44 Spiral plate, 45 Fourth motor, 46 Filter screen, 47 Separating brush roller, 48 Comb plate, 49 Stirring shaft, 50 Second impurity discharge pipe, 51 Transmission pipe, 52 Dewatering spiral plate, 53 Fifth motor, 54 Control box. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. Example 1

[0035] In one embodiment, such as Figures 1-12As shown, a PET bottle flake impurity removal device includes an annular belt 11 and a first screening box 33. A plurality of positioning wheels 13 are symmetrically and tightly attached to the inner side of the annular belt 11, and friction belts 14 are symmetrically arranged on the outer side of the annular belt 11. Friction wheels are tightly attached to the friction belts 14 at positions corresponding to the positioning wheels 13. The rotation shafts of one end of each positioning wheel 13 and friction wheel are rotatably mounted in mounting holes on one side of a first retainer 12. A drive assembly for rotating the annular belt 11 is provided on one side of the first retainer 12. A plurality of screening cages 16 are fixedly and evenly spaced on the inner side of the annular belt 11. A pressing roller 17 is rotatably mounted inside each screening cage 16. A rotating sealing plate 27 is rotatably mounted at the feed end of each screening cage 16. A first cleaning mechanism for removing impurities from the bottle flakes by pressing rollers 17 is provided on one side of the first retainer 12. The annular belt 11 has a storage box 23 in the middle of its inner side, and a discharge box 31 above the storage box 23. The first screening box 33 is fixedly installed inside the impurity removal tank 34. The first screening box 33 has a rotating mounting roller 35 inside, and a retaining plate is symmetrically provided on the mounting roller 35. Several actuating rollers 37 are rotatably provided between the two retaining plates at equal intervals. The first screening box 33 has a second cleaning mechanism for secondary impurity removal of bottle flakes inside. The discharge end of the first screening box 33 is connected to a second screening box 43. The second screening box 43 has a third cleaning mechanism for third impurity removal of bottle flakes inside. The first cleaning mechanism facilitates drying and impurity removal of bottle flakes, the second cleaning mechanism facilitates first water washing and impurity removal of bottle flakes, and the third cleaning mechanism facilitates second water washing and impurity removal of bottle flakes.

[0036] The drive assembly includes a first motor 15. Fixed shafts are fixed between the coaxial friction wheels. The friction wheels on the two fixed shafts at the bottom of the annular belt 11 are drive friction wheels. The rotating shafts on one side of the two drive friction wheels are connected via a first belt drive. The rotating shaft on one side of one drive friction wheel is connected to the output end of the first motor 15 via a second belt drive. The first motor 15 is fixed to one side of the first retainer 12. In use, when it is necessary to drive the annular belt 11 to rotate and drive several screening cages 16 to rotate, the first motor 15 is started. The second drive wheel on the output end of the first motor 15 is connected via a second belt to a second driven wheel on one side of one drive friction wheel. The two drive friction wheels are respectively connected via a first drive wheel, a first driven wheel, and a first belt drive, causing the drive friction wheels at both ends of the two fixed shafts to rotate simultaneously. Through the coordinated use of the drive friction wheels, friction wheels, and friction belt 14, the annular belt 11 is driven to rotate, thereby driving several screening cages 16 to rotate.

[0037] The first cleaning mechanism includes a drive wheel 18 and a paddle plate 28. Drive wheels 18 are fixedly mounted on the rotating shafts at both ends of the pressing roller 17. A drive belt 19 is located vertically on one side of each of the two first retainers 12. One side of the drive belt 19 is positioned at the moving position of the drive wheel 18. Drive rollers and transmission rollers are respectively fitted to both ends of the drive belt 19. The rotating shafts on one side of the drive rollers and transmission rollers are rotatably mounted within rotating holes on one side of the first retainer 12. The rotating shafts at the other ends of the drive rollers and transmission rollers are rotatably mounted within rotating holes on one side of the second retainer. The second retainer is fixedly mounted on one side of the first retainer 12. The rotating shaft on one side of the drive roller is fixedly connected to the output end of the second motor 20. The second motor 20 is fixedly mounted on the second retainer. On one side of the frame, extension shafts are fixedly mounted on the rotating shafts at both ends of the rotating sealing plate 27. A lever plate 28 is fixedly mounted on one end of each extension shaft. A circular plate is fixedly mounted on the extension shaft, and the circular plate is rotatably mounted inside a fixed tube. The fixed tube is fixedly mounted on one side of the screening cage 16. A torsion spring is provided between one side of the circular plate and one side inside the fixed tube. First guide plates 29 are provided on both sides of the storage box 23. The first guide plates 29 are located on the upper inner side of the mounting frame. One end of the mounting frame is fixedly mounted on the bottom end of the first retainer 12, and the other end of the mounting frame is fixedly connected to the storage box 23. Second guide plates 30 are provided on both sides above the discharge box 31. The second guide plates 30 are fixedly mounted on one side of the first retainer 12. The first guide plates 29 and the second guide plates 30 are fixedly mounted on the first retainer 12. Guide plates 30 are all positioned within the movement trajectory range of the deflector plate 28. A collection box 32 is located below the annular belt 11. In use, when it is necessary to remove impurities from bottle flakes, bottle flakes crushed to a specified size are fed into the storage box 23. Subsequently, the annular belt 11 drives several screening cages 16 to move. After the screening cages 16 move to one end of the first guide plate 29, as the screening cages 16 continue to move, the deflector plate 28, due to the restriction of the first guide plate 29, causes the deflector plate 28 to drive the rotating sealing plate 27 to rotate via the extension shaft, thereby opening the feeding end of the screening cage 16. When the screening cage 16 moves below the discharge end of the storage box 23, the annular belt 11 stops rotating, and the storage box 23 feeds bottle flakes into the screening cage 16. Then, the annular belt 11 drives the screening cage 16 intermittently again. When the moving plate 28 disengages from the first guide plate 29, the feed end of the screening cage 16 is closed under the action of the torsion spring. Then, when the annular belt 11 moves the screening cage 16 to the position of the drive belt 19, the drive wheel 18 rubs against the drive belt 19. The second motor 20 drives the drive belt 19 to rotate. The drive belt 19 drives the pressing roller 17 to rotate through the drive wheel 18, so that the pressing roller 17 squeezes the bottle flakes inside the screening cage 16 and breaks them up. This allows the bottle flakes to rub against the inner wall of the screening cage 16 and the outer side of the pressing roller 17, and also rubs against each other, thereby cleaning up some impurities. The impurities fall through the filter of the screening cage 16 to the bottom of the annular belt 11, and then fall through the filter holes of the annular belt 11 into the discharge box 31 for collection.

[0038] A first baffle plate is closely attached to the discharge end of the storage bin 23. First guide rails are slidably mounted on both sides of the first baffle plate, and these guide rails are fixedly mounted on the storage bin 23. The first baffle plate is fixedly mounted on the output end of the first electric push rod 24, which is also fixedly mounted on the storage bin 23. An infrared sensor 25 is fixedly mounted on the bottom inner side of the first retainer 12 at a position corresponding to the two sides of the storage bin 23. An infrared receiver 26 is fixedly mounted on the mounting bracket at a position corresponding to the upper part of the infrared sensor 25. The infrared sensor 25, the infrared receiver 26, and the first electric push rod 24 are all connected to the control box 5. 4. Electrical connection: The control box 54 is fixedly installed between the two first retainers 12. In use, when the screening cage 16 moves to the bottom of the storage box 23, the rotating shafts at both ends of the pressing roller 17 move between the infrared sensor 25 and the infrared receiver 26, so that the infrared receiver 26 cannot receive signals. The control box 54 controls the first electric push rod 24 to start, so that the material discharge end of the storage box 23 starts to discharge. After the set time is reached, the output end of the first electric push rod 24 drives the first baffle to move to the initial position, so as to close the material discharge end of the storage box 23. It is worth noting that the infrared sensor 25 and the infrared receiver 26 are both existing components.

[0039] Both sides of the screening cage 16 are fixedly provided with limiting frames 21. Each limiting frame 21 has symmetrically provided rollers at one end. Each roller has a rubber protective layer on its outer side. The two rollers are respectively in close contact with the inner and outer sides of the positioning frame 22. The positioning frame 22 is fixedly provided on one side of the first retainer 12. In use, the two rollers are located on the inner and outer sides of the positioning frame 22, which facilitates the support of the screening cage 16. At the same time, the rubber protective layer on the outer side of the rollers can increase the distance between the two rollers when passing through corners or when the limiting frame 21 tilts, thereby preventing jamming.

[0040] The second cleaning mechanism includes gears 38. Gears 38 are fixedly mounted on the rotating shafts at both ends of the actuating roller 37. Internal gear rings 39 are fixedly mounted at both ends of the first screening box 33 at positions corresponding to the gears 38. Several gears 38 mesh with two internal gear rings 39 respectively. One rotating shaft of the mounting roller 35 is fixedly connected to the output end of the third motor 36. The third motor 36 is fixedly mounted on one side of the impurity removal tank 34. Several actuating strips are provided on the actuating roller 37. A first impurity discharge pipe 40 is connected to the first screening box 33. The first screening box 33 is connected to the discharge end of the discharge box 31. The discharge box 31 is fixedly mounted on the storage box 23. A second baffle plate is symmetrically slidably mounted on one end of the discharge box 31. Each of the second baffle plates is slidably provided with a first guide tube, and each first guide tube is fixedly provided at one end of the discharge box 31. A third baffle plate is symmetrically slidably provided at one end of the first waste discharge pipe 40. Each of the third baffle plates is slidably provided with a second guide tube, and each second guide tube is fixedly provided at one end of the first waste discharge pipe 40. Both the second and third baffle plates are fixedly provided at one end of a first mounting bracket. Both first mounting brackets are slidably provided in a first sliding hole on one side of the impurity removal tank 34. One end of each first mounting bracket is fixedly connected to the output end of the second electric push rod 41. The second electric push rod 41 is fixedly provided on one side of the impurity removal tank 34. A fourth baffle plate is symmetrically slidably provided at the discharge end of the first screening box 33. Each of the fourth baffle plates is slidably provided with a third guide tube. The third guide tube is fixedly mounted on the output end of the first screening box 33. The fourth baffle plate is fixedly mounted on one end of the second mounting bracket. The second mounting bracket is slidably mounted in the second sliding hole on one side of the impurity removal tank 34. The second mounting bracket is fixedly mounted on the output end of the third electric push rod 42. The third electric push rod 42 is fixedly mounted on one side of the impurity removal tank 34. In use, when the annular belt 11 moves the screening cage 16 to above the discharge box 31, the deflector 28 contacts one end of the second guide plate 30, causing the rotating sealing plate 27 to open. The bottle flakes inside the screening cage 16 fall into the discharge box 31. Then the second baffle plate opens, causing the bottle flakes to fall into the first screening box 33. When the annular belt 11 rotates again, the second baffle plate pushes against one end of the discharge box 31. The system is closed, and the impurity removal tank 34 is filled with cleaning solution. The third motor 36 drives the mounting roller 35 to rotate, causing the agitator roller 37 to rotate on its own axis while revolving around the central axis. The agitator roller 37 causes the bottle flakes inside the first screening box 33 to contact the inner wall of the first screening box 33 and the agitator strip on the outside of the agitator roller 37, thus cleaning the impurities on the bottle flakes. Under the action of the liquid, the impurities accumulate inside the first impurity pipe 40 and adhere tightly to one side of the third baffle plate. After the agitator roller 37 has cleaned for a period of time, and before the discharge end of the discharge box 31 feeds again, the third electric push rod 42 causes the fourth baffle plate to slide, opening the discharge end of the first screening box 33, allowing the cleaned bottle flakes to fall into the second screening box 43. Subsequently, the discharge end of the second screening box 43 closes.When the discharge box 31 feeds bottle flakes into the first screening box 33 again, one end of the first impurity pipe 40 is opened, causing impurities to float on the liquid surface.

[0041] The third cleaning mechanism includes a spiral plate 44, which is fixedly mounted on a mounting shaft. The mounting shaft is rotatably mounted inside a second screening box 43, which is fixedly mounted inside a waste removal tank 34. One end of the mounting shaft is fixedly connected to the output end of a fourth motor 45, which is fixedly mounted on one side of the waste removal tank 34. A separating brush roller 47 is fixedly mounted on the other end of the mounting shaft, and the separating brush roller 47 has hard bristles. A stirring shaft 49 is fixedly mounted on one end of the mounting shaft, and the stirring shaft 49 has several stirring rods. A second waste removal pipe 50 is connected to one end of the second screening box 43, and a water inlet is provided at the other end of the second screening box 43. When the bottle flakes fall into the second screening box 43, the fourth motor 45 drives the mounting shaft to rotate. The mounting shaft drives the spiral plate 44 and the separating brush roller 47 to rotate. Under the action of the spiral plate 44, the cleaning liquid at one end of the second screening box 43 is transported to the discharge end of the second screening box 43. The liquid inside the impurity removal tank 34 enters the second screening box 43 through the water inlet. When the liquid flows, it drives the bottle flakes to move, so that the bottle flakes are transported to the position of the separating brush roller 47. When the separating brush roller 47 rotates, it can perform secondary cleaning of the impurities on the bottle flakes. After the impurities and bottle flakes are transported to one end of the second screening box 43, the impurities float on the liquid surface through the second impurity pipe 50, and the bottle flakes are discharged through the discharge end of the second screening box 43.

[0042] The second screening box 43 is equipped with a filter screen 46 at the water inlet. A scraper is fixed on the mounting shaft. The scraper is in close contact with one end of the second screening box 43. When in use, when the liquid inside the impurity removal tank 34 enters the second screening box 43 through the water inlet, the filter screen 46 can filter the liquid. The rotation of the mounting shaft drives the scraper to rotate, so that the scraper cleans the impurities attached to one side of the filter screen 46.

[0043] Inside the second screening box 43, a comb plate 48 is provided at the position corresponding to the separation brush roller 47. When in use, when the separation brush roller 47 rotates, the comb plate 48 can clean the bottle fragments or impurities remaining between the brush bristles. Example 2

[0044] The difference from Embodiment 1 is that: the discharge end of the second screening box 43 is connected to a transmission pipe 51, which is fixedly installed inside the impurity removal tank 34. A drive shaft is rotatably installed inside the transmission pipe 51. One end of the drive shaft is fixedly connected to the output end of the fifth motor 53, which is fixedly installed at one end of the transmission pipe 51. A dehydration spiral plate 52 is fixedly installed on the drive shaft. The dehydration spiral plate 52 has several perforations, and the pitch of the dehydration spiral plate 52 is gradually decreasing. In use, when bottle flakes fall into the transmission pipe 51, the fifth motor 53 drives the drive shaft to rotate, and the drive shaft drives the dehydration spiral plate 52 to rotate, so that the dehydration spiral plate 52 conveys the bottle flakes. As the pitch of the dehydration spiral plate 52 gradually decreases, the bottle flakes are compressed. The squeezed liquid is retained inside the impurity removal tank 34 through the circular perforations. The dehydrated bottle flakes then enter the next process for further processing.

[0045] The above embodiment discloses a PET bottle flake impurity removal device, wherein bottle flakes crushed to a specified size are fed into the storage bin 23. Subsequently, the annular belt 11 drives several screening cages 16 to move. After the screening cages 16 move to one end of the first guide plate 29, as the screening cages 16 continue to move, the deflector 28, due to the restriction of the first guide plate 29, causes the deflector 28 to drive the rotating sealing plate 27 to rotate via the extension shaft, thereby opening the feeding end of the screening cages 16. When the screening cages 16 move to below the discharge end of the storage bin 23, the annular belt 11 stops rotating, and the rotating shafts at both ends of the pressing roller 17 move between the infrared sensor 25 and the infrared receiver 26, so that the infrared receiver 26 cannot receive signals. The control box 54 controls the first electric push rod 24 to start, so that the discharge end of the storage bin 23 begins to discharge. After a set time is reached, the output end of the first electric push rod 24 drives the first baffle plate to move to The initial position closes the discharge end of the storage box 23. Then, the annular belt 11 drives the screening cage 16 to move intermittently. When the paddle plate 28 disengages from the first guide plate 29, the feed end of the screening cage 16 is closed under the action of the torsion spring. Then, when the annular belt 11 drives the screening cage 16 to the position of the drive belt 19, the drive wheel 18 and the drive belt 19 rub against each other. The second motor 20 drives the drive belt 19 to rotate. The drive belt 19 drives the pressing roller 17 to rotate through the drive wheel 18. The pressing roller 17 squeezes the bottle flakes inside the screening cage 16 and breaks them up. The bottle flakes can rub against the inner wall of the screening cage 16 and the outer side of the pressing roller 17, and there is also friction between the bottle flakes. This cleans up some impurities. The impurities fall through the filter of the screening cage 16 to the bottom of the annular belt 11. Then, the impurities fall through the filter holes of the annular belt 11 into the discharge box 31 for collection.

[0046] When the annular belt 11 moves the screening cage 16 above the discharge box 31, the deflector 28 contacts one end of the second guide plate 30, causing the rotating sealing plate 27 to open. Bottle flakes inside the screening cage 16 fall into the discharge box 31. Subsequently, the second baffle plate opens, causing the bottle flakes to fall into the first screening box 33. When the annular belt 11 rotates again, the second baffle plate closes one end of the discharge box 31. Simultaneously, the impurity removal tank 34 is filled with cleaning fluid. The third motor 36 drives the mounting roller 35 to rotate, causing the actuating roller 37 to rotate on its own axis while revolving around the central axis. The actuating roller 37 causes the bottle flakes inside the first screening box 33 to contact the inner wall of the first screening box 33. The agitator 37 contacts the outer agitator strip, thus cleaning the impurities on the bottle flakes. Under the action of the liquid, the impurities accumulate inside the first impurity tube 40 and adhere tightly to one side of the third baffle plate. After the agitator 37 has cleaned for a period of time, and before the discharge end of the discharge box 31 feeds again, the third electric push rod 42 causes the fourth baffle plate to slide, the discharge end of the first screening box 33 opens, and the cleaned bottle flakes fall into the second screening box 43. Then the discharge end of the second screening box 43 closes, and when the discharge box 31 feeds bottle flakes into the first screening box 33 again, one end of the first impurity tube 40 is opened, causing the impurities to float on the liquid surface.

[0047] After the bottle flakes fall into the second screening box 43, the fourth motor 45 drives the mounting shaft to rotate. The mounting shaft drives the spiral plate 44 and the separating brush roller 47 to rotate. Under the action of the spiral plate 44, the cleaning liquid at one end of the second screening box 43 is transported to the discharge end of the second screening box 43. The liquid inside the impurity removal tank 34 enters the second screening box 43 through the water inlet. When the liquid flows, it drives the bottle flakes to move, so that the bottle flakes are transported to the position of the separating brush roller 47. When the separating brush roller 47 rotates, it can perform secondary cleaning of the impurities on the bottle flakes. Subsequently, the impurities and bottle flakes are... After being conveyed to one end of the second screening box 43, impurities float on the liquid surface through the second impurity pipe 50, and the bottle flakes are discharged through the discharge end of the second screening box 43. When the bottle flakes fall into the transmission pipe 51, the fifth motor 53 drives the drive shaft to rotate, and the drive shaft drives the dehydration spiral plate 52 to rotate, so that the dehydration spiral plate 52 conveys the bottle flakes. As the pitch of the dehydration spiral plate 52 gradually decreases, the bottle flakes are compressed, and the squeezed liquid is retained in the impurity removal tank 34 through the circular perforation. After dehydration, the bottle flakes enter the next process for further processing.

[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A PET bottle flake impurity removal device, comprising an annular belt (11) and a first screening box (33), wherein a plurality of positioning wheels (13) are symmetrically and tightly attached to the inner side of the annular belt (11), and friction belts (14) are symmetrically and tightly attached to the outer side of the annular belt (11), wherein friction wheels are tightly and tightly attached to the friction belts (14) at positions corresponding to the positioning wheels (13), and the rotation shafts at one end of the positioning wheels (13) and the friction wheels are rotatably mounted in mounting holes on one side of a first retainer (12), wherein a drive assembly for driving the annular belt (11) to rotate is provided on one side of the first retainer (12), characterized in that, A plurality of screening cages (16) are fixed at equal intervals inside the annular belt (11), a pressing roller (17) is rotatably arranged inside each screening cage (16), a rotating sealing plate (27) is rotatably arranged at the feeding end of each screening cage (16), a first retaining frame (12) is provided with a first cleaning mechanism for removing impurities from the bottle pieces by the pressing roller (17), a storage box (23) is arranged at the middle of the inner side of the annular belt (11), a discharge box (31) is arranged above the storage box (23), a first screening box (33) is fixedly arranged inside a removal pool (34), an installation roller (35) is rotatably arranged inside the first screening box (33), a retaining plate is symmetrically arranged on the installation roller (35), a plurality of poking rollers (37) are rotatably arranged at equal intervals between the two retaining plates, a second cleaning mechanism is arranged inside the first screening box (33) for removing impurities from the bottle pieces for the second time, and a second screening box (43) is communicatively arranged at the discharging end of the first screening box (33), the second screening box (43) is provided with a third cleaning mechanism for removing impurities from the bottle pieces for the third time; The first cleaning mechanism comprises a driving wheel (18) and a poking plate (28), the driving wheel (18) is fixedly arranged on the rotating shaft at both ends of the pressing roller (17), a driving belt (19) is vertically and linearly arranged at one side of the first retaining frame (12), the driving belt (19) is arranged at the moving position of the driving wheel (18) at one side, a driving roller and a transmission roller are respectively arranged at both ends of the driving belt (19), the driving roller and the transmission roller are rotatably arranged in the rotating hole at one side of the first retaining frame (12) on the rotating shaft at one side, the driving roller and the transmission roller are rotatably arranged in the rotating hole at one side of the second retaining frame on the rotating shaft at the other end, the second retaining frame is fixedly arranged at one side of the first retaining frame (12), the rotating shaft at one side of the driving roller is fixedly connected with the output end of the second motor (20), the second motor (20) is fixedly arranged at one side of the second retaining frame, the rotating shaft at both ends of the rotating sealing plate (27) is fixedly arranged with an extension shaft, the extension shaft is fixedly arranged with the poking plate (28) at one end, a circular plate is fixedly arranged on the extension shaft, the circular plate is rotatably arranged in the fixed tube, the fixed tube is fixedly arranged at one side of the screening cage (16), a torsion spring is arranged between one side of the circular plate and one side of the fixed tube, first guide plates (29) are arranged at both sides of the storage box (23), the first guide plates (29) are arranged on the upper end of the mounting frame, the mounting frame is fixedly arranged at the bottom end of the first retaining frame (12) at one end, the mounting frame is fixedly connected with the storage box (23) at the other end, second guide plates (30) are arranged at both sides above the discharge box (31), the second guide plates (30) are fixedly arranged at one side of the first retaining frame (12), the first guide plates (29) and the second guide plates (30) are arranged in the moving track range of the poking plate (28), and a collecting box (32) is arranged below the annular belt (11).

2. The PET chip impurity removal device according to claim 1, characterized in that, The drive assembly includes a first motor (15), coaxial fixed between the friction wheel, the bottom end of the two fixed shafts of the annular belt (11) friction wheel is a drive friction wheel, two said drive friction wheel side rotating shaft through the first belt transmission connection, a said drive friction wheel side rotating shaft through the second belt and first motor (15) output transmission connection, the first motor (15) is fixedly arranged on the first retainer (12) side.

3. The PET chip impurity removal device according to claim 1, characterized in that, The first baffle plate is arranged at the discharge end of the storage tank (23). The first baffle plate is arranged on both sides of the first guide rail. The first guide rail is fixedly arranged on the storage tank (23). The first baffle plate is fixedly arranged on the output end of the first electric push rod (24). The first electric push rod (24) is fixedly arranged on the storage tank (23). The first retainer (12) is fixedly arranged on the corresponding position of the two sides of the storage tank (23). The infrared sensor (25) is fixedly arranged on the corresponding position above the infrared sensor (25) on the mounting bracket. The infrared sensor (25), the infrared receiver (26) and the first electric push rod (24) are electrically connected with the control box (54). The control box (54) is fixedly arranged between the two first retainers (12).

4. The PET chip impurity removing device according to claim 3, characterized in that, The limiting frame (21) is fixedly arranged on both sides of the screening cage (16). The limiting frame (21) is symmetrically provided with a roller at one end. The outer side of the roller is provided with a rubber protective layer. The two rollers are respectively in close contact with the inner side and the outer side of the positioning frame (22). The positioning frame (22) is fixedly arranged on one side of the first retainer (12).

5. The PET chip impurity removing device according to claim 1, characterized in that, The second cleaning mechanism comprises gears (38), the gears (38) are fixed on the rotating shafts at both ends of the poking roller (37), the first screening box (33) is internally provided with internally toothed rings (39) corresponding to the positions of the gears (38), the gears (38) are respectively engaged with the two internally toothed rings (39), one end of the mounting roller (35) is fixedly connected with the output end of the third motor (36), the third motor (36) is fixed on one side of the impurity removal tank (34), the poking roller (37) is provided with a plurality of poking strips, the first screening box (33) is provided with a first impurity removal pipe (40), the first screening box (33) is communicated with the discharge end of the discharge tank (31), the discharge tank (31) is fixed on the storage tank (23), the discharge tank (31) is symmetrically provided with a second baffle at one end, a first guide pipe is fixed on one end of the discharge tank (31), the first impurity removal pipe (40) is symmetrically provided with a third baffle at one end, a second guide pipe is fixed on one end of the first impurity removal pipe (40), the second baffle and the third baffle are fixed on one end of the first mounting frame, the first mounting frame is slidably arranged in the first sliding hole on one side of the impurity removal tank (34), one end of the first mounting frame is fixedly connected with the output end of the second electric push rod (41), the second electric push rod (41) is fixed on one side of the impurity removal tank (34), the discharge end of the first screening box (33) is symmetrically provided with a fourth baffle, a third guide pipe is fixed on the output end of the first screening box (33), the fourth baffle is fixed on one end of the second mounting frame, the second mounting frame is slidably arranged in the second sliding hole on one side of the impurity removal tank (34), the second mounting frame is fixed on the output end of the third electric push rod (42), and the third electric push rod (42) is fixed on one side of the impurity removal tank (34).

6. The PET chip impurity removal device according to claim 5, characterized in that, The third cleaning mechanism comprises a spiral plate (44), the spiral plate (44) is fixed on a mounting shaft, the mounting shaft is rotatably arranged in the second screening box (43), the second screening box (43) is fixed in the impurity removal tank (34), one end of the mounting shaft is fixedly connected with the output end of the fourth motor (45), the fourth motor (45) is fixed on one side of the impurity removal tank (34), the other end of the mounting shaft is fixedly provided with a separation brush roller (47), the separation brush roller (47) is provided with hard bristles, one end of the mounting shaft is fixedly provided with an agitating shaft (49), the agitating shaft (49) is provided with a plurality of agitating rods, one end of the second screening box (43) is provided with a second impurity removal pipe (50), and the other end of the second screening box (43) is provided with a water inlet hole.

7. The PET chip impurity removal device according to claim 6, characterized in that, The second screening box (43) is provided with a filter screen (46) at the water inlet hole, a scraping rod is fixed on the mounting shaft, and the scraping rod is tightly attached to one end of the second screening box (43).

8. The PET chip impurity removal device according to claim 7, characterized in that, The second screening box (43) is provided with a comb plate (48) corresponding to the position of the separation brush roller (47).

9. The PET chip impurity removing device according to claim 8, characterized in that, The second screening box (43) is communicated with a conveying pipe (51) at the discharge end, the conveying pipe (51) is fixedly arranged in the impurity removal tank (34), a transmission shaft is rotatably arranged in the conveying pipe (51), one end of the transmission shaft is fixedly connected with the output end of a fifth motor (53), the fifth motor (53) is fixedly arranged at one end of the conveying pipe (51), a dehydration spiral plate (52) is fixedly arranged on the transmission shaft, a plurality of perforations are arranged on the dehydration spiral plate (52), and the pitch of the dehydration spiral plate (52) is gradually reduced.

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