Impurity removal device for PET (Polyethylene Terephthalate) bottle chips

Abstract

The invention discloses a PET bottle flake impurity removal device, and relates to the technical field of PET bottle flakes, the PET bottle flake impurity removal device comprises 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, a driving assembly is arranged on one side of a first holder, and a plurality of screening cages are fixedly arranged on the inner side of the annular belt at equal intervals; and pressing rollers are rotationally arranged in the screening cages, a first cleaning mechanism is arranged on one side of the first holder, a second cleaning mechanism is arranged in the first screening box, and a third cleaning mechanism is arranged in the second screening box. Pressing rollers are rotationally arranged in a plurality of screening cages on an annular belt, so that bottle chips in the screening cages are dried and subjected to impurity removal, the bottle chips can be in full friction contact with a first screening box and a stirring roller through revolution and rotation of the stirring roller, and the bottle chips are separated through rotation of a spiral plate; and the bottle chips are driven to enter the position of the separation brush roller for secondary washing and impurity removal, so that the impurities of the bottle chips are fully removed.

Description

Technical Field

[0001] The invention relates to the technical field of PET bottle flakes, in particular to a PET bottle flake impurity removal device. Background Art

[0002] In order to improve the efficiency of PET bottle flakes processing, most of the PET bottles are directly put into the crushing device after recycling to be crushed into PET bottle flakes. However, after the PET bottles are recycled, there will be dirt and other debris on the surface, so the dirt and other debris will be mixed in the PET bottle flakes after crushing. Therefore, the crushed PET bottle flakes need to be cleaned and dried before the next step of processing.

[0003] The announcement number is: CN109866356B, which discloses a PET bottle flakes waste removal system, which preliminarily removes dirt between PET bottle flakes through a first stirring mechanism, and then further removes dirt on the surface of the PET bottle flakes through a second stirring mechanism, so that the dirt on the PET bottle flakes is removed more thoroughly, but in the above-mentioned waste removal system, when the bottle flakes are cleaned for the second time, the stirring roller generates a vortex, so that the bottle flakes in the stirring drum rub against the inner wall of the stirring drum, so as to achieve the effect of removing impurities from the bottle flakes, but the above-mentioned system only relies on the stirring roller to generate a centrifugal force vortex, and when the vortex is generated, the density of the bottle flakes is not large, so the bottle flakes will be concentrated in the middle of the vortex, therefore, the bottle flakes will be attached to the stirring roller, and the bottle flakes are driven by the vortex to move for cleaning, which has a certain randomness, so that the cleaning effect of the bottle flakes is not ideal.

[0004] After the bottle flakes are broken into fixed sizes, some impurities attached to one side of the plane are easier to clean when dry, but when in water, due to the tension of the water, some impurities are not easy to clean in the water. The above-mentioned waste removal system does not have a component for cleaning the dried bottle flakes, but directly places the broken bottle flakes in the liquid for cleaning, so that some impurities with higher density will be deposited at the bottom and will be discharged along with the bottle flakes, resulting in poor impurity removal effect.

[0005] Based on this, a PET bottle flakes impurity removal device is now provided, which can eliminate the disadvantages of the existing device. Summary of the invention

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

[0007] To achieve the above object, the present invention provides the following technical solutions: A PET bottle flake impurity removal device comprises an annular belt and a first screening box, wherein a plurality of positioning wheels are symmetrically and tightly arranged on the inner side of the annular belt, a friction belt is symmetrically arranged on the outer side of the annular belt, friction wheels are tightly and frictionally arranged at positions corresponding to the positions of the positioning wheels on the friction belt, the rotating shafts of the positioning wheels and one end of the friction wheels are rotatably arranged in mounting holes on one side of a first retaining frame, a driving assembly for driving the annular belt to rotate is arranged on one side of the first retaining frame, a plurality of screening cages are fixedly arranged at equal intervals on the inner side of the annular belt, pressing rollers are rotatably arranged inside the screening cages, a rotating sealing plate is rotatably arranged at the feeding end of the screening cage, and the first retaining frame is provided with a plurality of sieving cages, wherein the plurality of sieving cages are provided with a plurality of sieving cages, and the plurality of sieving cages are provided with a plurality of sieving cages, wherein ... A first cleaning mechanism for pressing a roller to remove impurities from bottle flakes is provided on one side of the frame, a storage box is provided in the middle of the inner side of the annular belt, a discharge box is provided above the storage box, the first screening box is fixedly arranged inside the impurity removal tank, a mounting roller is rotatably provided inside the first screening box, retaining plates are symmetrically provided on the mounting rollers, a number of shifting rollers are rotatably provided between the two retaining plates at equal intervals, a second cleaning mechanism for secondary impurity removal from bottle flakes is provided inside the first screening box, a second screening box is connected to the discharge end of the first screening box, and a third cleaning mechanism for the third impurity removal from bottle flakes is provided inside the second screening box.

[0008] On the basis of the above technical solution, the present invention also provides the following optional technical solution: In an optional scheme: the driving assembly includes a first motor, and a fixed shaft is fixed between the coaxial friction wheels. The friction wheels on the two fixed shafts at the bottom end of the annular belt are driving friction wheels. The rotating shafts on one side of the two driving friction wheels are connected by a first belt transmission. The rotating shaft on one side of the driving friction wheels is connected to the output end of the first motor through a second belt. The first motor is fixed on one side of the first retaining frame.

[0009] In an optional scheme: the first cleaning mechanism includes a driving wheel and a paddle plate, driving wheels are fixedly provided on the rotating shafts at both ends of the pressing roller, a driving belt is provided at a vertical straight position on one side of the two first retaining frames, one side of the driving belt is arranged at the moving position of the driving wheel, and a driving roller and a transmission roller are respectively provided at both ends of the driving belt, and the rotating shafts of the driving roller and the transmission roller on one side are both rotatably arranged in the rotating hole on one side of the first retaining frame, and the rotating shafts of the driving roller and the transmission roller on the other end are rotatably arranged in the rotating hole on one side of the second retaining frame, the second retaining frame is fixedly arranged on one side of the first retaining frame, the rotating shaft on one side of the driving roller is fixedly connected to the output end of the second motor, the second motor is fixedly arranged on one side of the second retaining frame, and the two ends of the rotating sealing plate An extension shaft is fixed on the rotating shaft at each end, a paddle plate is fixed on one end of the extension shaft, a circular plate is fixed on the extension shaft, the circular plate is rotatably arranged in a fixed tube, the fixed tube is fixed on one side of the screening cage, a torsion spring is arranged between one side of the circular plate and one side inside the fixed tube, first guide plates are arranged on both sides of the storage box, the first guide plate is arranged on the upper end of the inner side of the mounting frame, one end of the mounting frame is fixed on the bottom end of the first retaining frame, the other end of the mounting frame is fixedly connected to the storage box, second guide plates are arranged on both sides above the discharge box, the second guide plate is fixed on one side of the first retaining frame, the first guide plate and the second guide plate are both arranged within the moving trajectory of the paddle plate, and a collecting box is arranged below the annular belt.

[0010] In an optional scheme: a first material baffle plate is closely provided at the discharge end of the material storage box, first guide rails are slidably provided on both sides of the first material baffle plate, the first guide rails are fixed on the material storage box, the first material baffle plate is fixed on the output end of the first electric push rod, the first electric push rod is fixed on the material storage box, an infrared sensor is fixed at the bottom end of the inner side of the first retaining frame at the positions corresponding to the two sides of the material storage box, an infrared receiver is fixed on the mounting frame at the position corresponding to the position above the infrared sensor, the infrared sensor, infrared receiver and first electric push rod are all electrically connected to the control box, and the control box is fixed between the two first retaining frames.

[0011] In an optional solution: limit frames are fixedly provided on both sides of the screening cage, rollers are symmetrically provided at one end of the limit frames, rubber protective layers are provided on the outer sides of the rollers, the two rollers are respectively tightly attached to the inner and outer sides of the positioning frame, and the positioning frame is fixed on one side of the first retaining frame.

[0012] In an optional scheme: the second cleaning mechanism includes gears, gears are fixedly provided on the rotating shafts at both ends of the toggle roller, internal gear rings are fixedly provided at both ends of the first screening box corresponding to the gear positions, and a plurality of the gears are respectively meshed with the two internal gear rings, the rotating shaft at one end of the mounting roller is fixedly connected to the output end of the third motor, the third motor is fixedly provided on one side of the impurity removal tank, a plurality of toggle bars are provided on the toggle roller, the first screening box is connected with a first impurity discharge pipe, the first screening box is connected with the discharge end of the discharge box, the discharge box is fixedly provided on the storage box, a second baffle plate is symmetrically slidably provided at one end of the discharge box, a first guide tube is slidably provided on the second baffle plate, the first guide tube is fixedly provided at one end of the discharge box, a third baffle plate is symmetrically slidably provided at one end of the first impurity discharge pipe, and the first The three material baffle plates are all slidably provided with a second guide tube, the second guide tubes are all fixedly arranged at one end of the first impurity discharge pipe, the second material baffle plate and the third material baffle plate are both fixedly arranged at one end of the first mounting frame, the two first mounting frames are both slidably arranged 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 arranged on one side of the impurity removal tank, the fourth material baffle plate is symmetrically slidably provided at the discharge end of the first screening box, the third guide tubes are all slidably provided on the fourth material baffle plate, the third guide tubes are all fixedly arranged on the output end of the first screening box, the fourth material baffle slide is fixedly arranged at 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, the second mounting frame is fixedly arranged on the output end of the third electric push rod, and the third electric push rod is fixedly arranged on one side of the impurity removal tank.

[0013] In an optional scheme: the third cleaning mechanism includes a spiral plate, the spiral plate is fixed on the mounting shaft, the mounting shaft is rotatably arranged inside the second screening box, the second screening box is fixed inside the impurity removal tank, one end of the mounting shaft is fixedly connected to the output end of the fourth motor, the fourth motor is fixedly arranged on one side of the impurity removal tank, the other end of the mounting shaft is fixedly provided with a separation brush roller, the separation brush roller is provided with hard bristles, one end of the mounting shaft is fixedly provided with a stirring shaft, the stirring shaft is provided with a plurality of stirring rods, one end of the second screening box is connected to a second impurity removal pipe, and the other end of the second screening box is provided with a water inlet hole.

[0014] In an optional solution: a filter screen is provided at the water inlet of the second screening box, a scraper rod is fixedly provided on the mounting shaft, and the scraper rod is in close contact with one end of the second screening box.

[0015] In an optional solution: a comb plate is provided inside the second screening box at a position corresponding to the position of the separation brush roller.

[0016] In an optional scheme: the discharge end of the second screening box is connected to a transmission pipe, the transmission pipe is fixedly arranged inside the impurity removal tank, a transmission shaft is rotatably arranged inside the transmission pipe, one end of the transmission shaft is fixedly connected to the output end of the fifth motor, the fifth motor is fixedly arranged at one end of the transmission pipe, a dehydration spiral plate is fixedly arranged on the transmission shaft, a plurality of through holes are arranged on the dehydration spiral plate, and the pitch of the dehydration spiral plate is gradually reduced.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges a plurality of screening cages at equal intervals on the annular belt, and a pressing roller is rotatably arranged inside the screening cage, so that the annular belt drives the screening cage to rotate to the bottom of the material storage box and the top of the material discharge box, so that the materials can be automatically loaded and unloaded, and when the screening cage moves to the position of the driving belt, the pressing roller can be driven to rotate, so that the bottle chips inside the screening cage are dried and impurities are removed. After drying and impurities are removed, the bottle chips enter the first screening box, and the bottle chips can be fully in friction contact with the first screening box and the paddle roller through the revolution and rotation of the paddle roller, so as to enhance the impurity removal effect on the bottle chips. After the bottle chips enter the second screening box, the spiral plate rotates, so that the bottle chips are driven by the liquid flow effect to enter the position of the separation brush roller for secondary water washing and impurity removal, so as to fully remove impurities from the bottle chips, and the dehydration spiral plate is arranged, so that the bottle chips after impurity removal can be easily dehydrated, and the screening cage divides the bottle chips to be processed into several times for separate impurities removal, reduces the accumulation and impurity removal of the bottle chips, thereby improving the impurity removal effect of the bottle chips, thereby increasing the practicality of the PET bottle chip impurity removal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal structure of the impurity removal tank of the present invention.

[0020] Figure 3 It is a schematic diagram of the installation of the screening cage of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the first guide plate of the present invention.

[0022] Figure 5 This is a schematic diagram of the installation of the infrared sensor and infrared receiver of the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the second guide plate of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the pressing roller of the present invention.

[0025] Figure 8 This is a schematic diagram of the installation of the toggle roller of the present invention.

[0026] Fig. 9 This is a schematic diagram of the installation of the gear and the internal gear ring of the present invention.

[0027] Fig.10 It is a schematic diagram of the structure of the spiral plate and the separation brush roller of the present invention.

[0028] Fig.11 It is a schematic diagram of the comb plate structure of the present invention.

[0029] Fig.12 It is a schematic diagram of the structure of the dehydration spiral plate of the present invention.

[0030] Figure numerals: 11 endless belt, 12 first retaining frame, 13 positioning wheel, 14 friction belt, 15 first motor, 16 screening cage, 17 pressing roller, 18 driving wheel, 19 driving 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 rotating sealing plate, 28 dial plate, 29 first guide plate, 30 second guide plate, 31 discharge box, 32 collection Box, 33 the first screening box, 34 the impurity removal tank, 35 the mounting roller, 36 the third motor, 37 the toggle roller, 38 the gear, 39 the inner gear ring, 40 the first row of impurity pipes, 41 the second electric push rod, 42 the third electric push rod, 43 the second screening box, 44 the spiral plate, 45 the fourth motor, 46 the filter screen, 47 the separation brush roller, 48 the comb plate, 49 the stirring shaft, 50 the second row of impurity pipes, 51 the transmission pipe, 52 the dehydration spiral plate, 53 the fifth motor, 54 the control box. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. Example 1

[0032] In one embodiment, Figure 1-Figure 12As shown, a PET bottle flake impurity removal device comprises an annular belt 11 and a first screening box 33, a plurality of positioning wheels 13 are symmetrically and tightly provided on the inner side of the annular belt 11, a friction belt 14 is symmetrically provided on the outer side of the annular belt 11, friction wheels are closely and rubbed at the positions corresponding to the positions of the positioning wheels 13 on the friction belt 14, the positioning wheels 13 and the rotating shafts at one end of the friction wheels are rotatably arranged in the mounting holes on one side of the first retaining frame 12, a driving assembly for driving the annular belt 11 to rotate is provided on one side of the first retaining frame 12, a plurality of screening cages 16 are fixedly provided at equal intervals on the inner side of the annular belt 11, a pressing roller 17 is rotatably provided inside the screening cage 16, a rotating sealing plate 27 is rotatably provided at the feeding end of the screening cage 16, and a first cleaning mechanism for pressing the roller 17 to remove impurities from the bottle flakes is provided on one side of the first retaining frame 12 A storage box 23 is provided in the middle of the inner side of the endless belt 11, and a discharge box 31 is provided above the storage box 23. The first screening box 33 is fixedly arranged inside the impurity removal tank 34. A mounting roller 35 is rotatably provided inside the first screening box 33, and a retaining plate is symmetrically provided on the mounting roller 35. A plurality of swivel rollers 37 are rotatably provided between the two retaining plates at equal intervals. A second cleaning mechanism for secondary impurity removal of bottle flakes is provided inside the first screening box 33. A second screening box 43 is connected to the discharge end of the first screening box 33. A third cleaning mechanism for third impurity removal of bottle flakes is provided inside the second screening box 43. The first cleaning mechanism facilitates drying and impurity removal of bottle flakes, the second cleaning mechanism facilitates the first water washing and impurity removal of bottle flakes, and the third cleaning mechanism facilitates the second water washing and impurity removal of bottle flakes. The driving assembly includes a first motor 15, and a fixed shaft is fixed between the coaxial friction wheels. The friction wheels on the two fixed shafts at the bottom end of the annular belt 11 are driving friction wheels. The rotating shafts on one side of the two driving friction wheels are connected by a first belt transmission, and the rotating shaft on one side of the driving friction wheel is connected to the output end of the first motor 15 through a second belt. The first motor 15 is fixed on one side of the first retaining frame 12. When in use, when it is necessary to drive the annular belt 11 to rotate and drive a plurality of screening cages 16 to rotate, the first motor 15 is started, and the second driving wheel on the output end of the first motor 15 is connected to the second driven wheel on one side of the driving friction wheel through the second belt. One side of the two driving friction wheels is connected by the first driving wheel, the first driven wheel and the first belt transmission, so that the driving friction wheels at both ends of the two fixed shafts rotate simultaneously, and the driving friction wheel, the friction wheel and the friction belt 14 are used in combination to drive the annular belt 11 to rotate, thereby driving a plurality of screening cages 16 to rotate.

[0033] The first cleaning mechanism includes a driving wheel 18 and a paddle 28, driving wheels 18 are fixedly provided on the rotating shafts at both ends of the pressing roller 17, driving belts 19 are provided at vertical straight positions on one side of the two first retaining frames 12, one side of the driving belt 19 is arranged at the moving position of the driving wheel 18, and driving rollers and transmission rollers are respectively provided at both ends of the driving belt 19, the rotating shafts of one side of the driving roller and the transmission roller are both rotatably arranged in the rotating hole on one side of the first retaining frame 12, and the rotating shafts of the other ends of the driving roller and the transmission roller are rotatably arranged in the rotating hole on one side of the second retaining frame, the second retaining frame is fixedly arranged on one side of the first retaining frame 12, the rotating shaft on one side of the driving roller is fixedly connected to the output end of the second motor 20, and the second motor 20 is fixedly arranged on the second retaining frame. On one side of the frame, extension shafts are fixedly provided on the rotating shafts at both ends of the rotating sealing plate 27, and a dial plate 28 is fixedly provided at one end of the extension shaft. A circular plate is fixedly provided on the extension shaft, and the circular plate is rotatably arranged in a fixed tube, and the fixed tube is fixedly arranged on one side of the screening cage 16. A torsion spring is arranged 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, and the first guide plates 29 are arranged on the upper end of the inner side of the mounting frame. One end of the mounting frame is fixedly arranged at the bottom end of the first retaining frame 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, and the second guide plates 30 are fixedly arranged on one side of the first retaining frame 12. The first guide plates 29 and the second The guide plates 30 are all arranged within the moving track of the paddle plate 28. A collecting box 32 is provided below the annular belt 11. When in use, when it is necessary to remove impurities from the bottle flakes, the bottle flakes that have been broken into a specified size are put into the storage box 23, and then the annular belt 11 drives a plurality of screening cages 16 to move. After the screening cage 16 moves to one end of the first guide plate 29, when the screening cage 16 continues to move, the paddle plate 28 is restricted by the first guide plate 29, so that the paddle plate 28 drives the rotating sealing plate 27 to rotate through the extension shaft, so that the feeding end of the screening cage 16 is opened. When the screening cage 16 moves to below the discharging end of the storage box 23, the annular belt 11 stops rotating, and the storage box 23 puts bottle flakes into the screening cage 16, and then the annular belt 11 drives the screening cage 16 to perform intermittent screening again. When the paddle plate 28 is disengaged from the first guide plate 29, the feeding end of the screening cage 16 is closed under the action of the torsion spring, and then the annular belt 11 drives the screening cage 16 to move to the position of the driving belt 19, the driving wheel 18 and the driving belt 19 are rubbed tightly, and the second motor 20 drives the driving belt 19 to rotate, and the driving belt 19 drives the pressing roller 17 to rotate through the driving wheel 18, so that the pressing roller 17 squeezes the bottle flakes inside the screening cage 16 and breaks up the bottle flakes, so that the bottle flakes can rub against the inner wall of the screening cage 16 and the outer side of the pressing roller 17, and the bottle flakes also rub against each other, so as to clean up some impurities, and the impurities are filtered out from the screening cage 16 and fall on the bottom end of the annular belt 11, and then the impurities pass through the filter holes on the annular belt 11 and fall into the discharge box 31 for collection.

[0034] The first baffle plate is closely attached to the discharge end of the material storage box 23, and first guide rails are slidably provided on both sides of the first baffle plate. The first guide rails are fixedly provided on the material storage box 23, and the first baffle plate is fixedly provided on the output end of the first electric push rod 24. The first electric push rod 24 is fixedly provided on the material storage box 23. An infrared sensor 25 is fixedly provided at the inner bottom end of the first retaining frame 12 corresponding to the positions on both sides of the material storage box 23, and an infrared receiver 26 is fixedly provided on the mounting frame corresponding to the position above 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 is electrically connected, the control box 54 is fixedly arranged between the two first retaining frames 12. When 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 to between the infrared sensor 25 and the infrared receiver 26, so that the infrared receiver 26 cannot receive signals, and the control box 54 controls the first electric push rod 24 to start, so that the material discharging end of the storage box 23 starts to discharge materials. After the 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, so that the material discharging end of the storage box 23 is closed. It is worth noting that the infrared sensor 25 and the infrared receiver 26 are both existing components.

[0035] Limiting frames 21 are fixedly provided on both sides of the screening cage 16, and rollers are symmetrically provided at one end of the limiting frames 21. Rubber protective layers are provided on the outer sides of the rollers. The two rollers are respectively tightly attached to the inner and outer sides of the positioning frame 22. The positioning frame 22 is fixed on one side of the first retaining frame 12. When in use, the two rollers are respectively located on the inner and outer sides of the positioning frame 22, so that it is convenient to support the screening cage 16. At the same time, the rubber protective layer is provided on the outer side of the roller, so that when passing through a corner or when the limiting frame 21 is tilted, the distance between the two rollers can be increased to prevent jamming.

[0036] The second cleaning mechanism includes a gear 38, gears 38 are fixedly provided on the rotating shafts at both ends of the toggle roller 37, internal gear rings 39 are fixedly provided at both ends of the first screening box 33 corresponding to the positions of the gears 38, and a plurality of the gears 38 are respectively meshed with the two internal gear rings 39, a rotating shaft at one end of the installation roller 35 is fixedly connected to the output end of the third motor 36, the third motor 36 is fixedly arranged on one side of the impurity removal tank 34, a plurality of toggle bars are provided on the toggle 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 arranged on the storage box 23, and a second baffle plate is symmetrically slidably provided at one end of the discharge box 31, The second baffle plate is slidably provided with a first guide tube, the first guide tube is fixedly arranged at one end of the discharge box 31, the first impurity discharge pipe 40 is symmetrically slidably provided with a third baffle plate, the third baffle plate is slidably provided with a second guide tube, the second guide tube is fixedly arranged at one end of the first impurity discharge pipe 40, the second baffle plate and the third baffle plate are fixedly arranged at one end of the first mounting frame, the two first mounting frames are 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 to the output end of the second electric push rod 41, the second electric push rod 41 is fixedly arranged on one side of the impurity removal tank 34, the first screening box 33 discharge end is symmetrically slidably provided with a fourth baffle plate, and the fourth baffle plate is slidably provided with a third guide tube. The third guide tube is fixed on the output end of the first screening box 33, the fourth material blocking slide 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. When in use, when the endless belt 11 drives the screening cage 16 to move above the discharge box 31, the paddle plate 28 contacts one end of the second guide plate 30, so that the rotating sealing plate 27 is opened, and the bottle pieces inside the screening cage 16 fall into the discharge box 31, and then the second material blocking plate is opened, so that the bottle pieces fall into the first screening box 33. When the endless belt 11 rotates again, the second material blocking plate moves one end of the discharge box 31. The first screening box 33 is closed, and the cleaning tank 34 is filled with cleaning liquid. The third motor 36 drives the installation roller 35 to rotate, so that the swivel roller 37 rotates while revolving. The swivel roller 37 makes the bottle pieces inside the first screening box 33 contact with the inner wall of the first screening box 33 and the swivel strip outside the swivel roller 37, so that the impurities on the bottle pieces are cleaned. Under the action of the liquid, the impurities are accumulated inside the first impurity discharge pipe 40 and are tightly attached to one side of the third baffle plate. When the swivel roller 37 cleans for a period of time and before the discharge end of the discharge box 31 is fed again, the third electric push rod 42 makes the fourth baffle plate slide, and the discharge end of the first screening box 33 is opened, so that the cleaned bottle pieces fall into the second screening box 43, and then the discharge end of the second screening box 43 is closed.When the discharge box 31 transports bottle flakes to the first screening box 33 again, one end of the first impurity discharge pipe 40 is opened, so that the impurities float on the liquid surface.

[0037] The third cleaning mechanism includes a spiral plate 44, which is fixed on a mounting shaft, and the mounting shaft is rotatably arranged inside a second screening box 43, and the second screening box 43 is fixed inside a de-impurity tank 34, and one end of the mounting shaft is fixedly connected to an output end of a fourth motor 45, and the fourth motor 45 is fixedly arranged on one side of the de-impurity tank 34, and a separation brush roller 47 is fixedly arranged at the other end of the mounting shaft, and hard bristles are arranged on the separation brush roller 47, and a stirring shaft 49 is fixedly arranged at one end of the mounting shaft, and a plurality of stirring rods are arranged on the stirring shaft 49, and one end of the second screening box 43 is connected to a second de-impurity pipe 50, and the other end of the second screening box 43 is provided with a water inlet. When in use, When the bottle flakes fall into the second screening box 43, the fourth motor 45 drives the mounting shaft to rotate, and the mounting shaft drives the spiral plate 44 and the separation 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, and the liquid inside the impurity removal tank 34 enters the second screening box 43 through the water inlet hole. When the liquid flows, it drives the bottle flakes to move, so that the bottle flakes are transported to the position of the separation brush roller 47. When the separation brush roller 47 rotates, the impurities on the bottle flakes can be cleaned for a second time. Subsequently, 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 discharge pipe 50, and the bottle flakes are discharged through the discharge end of the second screening box 43.

[0038] A filter screen 46 is provided at the water inlet of the second screening box 43, and a scraper rod is fixedly provided on the mounting shaft. The scraper rod is tightly attached to 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 hole, the filter screen 46 can filter the liquid, and the rotating shaft of the mounting shaft drives the scraper rod to rotate, so that the scraper rod cleans the impurities attached to one side of the filter screen 46.

[0039] A comb plate 48 is provided inside the second screening box 43 at a position corresponding to the separation brush roller 47. When in use, when the separation brush roller 47 rotates, the comb plate 48 can clean bottle flakes or impurities remaining between the bristles. Example 2

[0040] The difference from Example 1 is that a transmission pipe 51 is connected to the discharge end of the second screening box 43, and the transmission pipe 51 is fixedly arranged inside the impurity removal tank 34. A transmission shaft is rotatably arranged inside the transmission pipe 51, and one end of the transmission shaft is fixedly connected to the output end of the fifth motor 53. The fifth motor 53 is fixedly arranged at one end of the transmission pipe 51. A dehydration spiral plate 52 is fixedly arranged on the transmission shaft, and a plurality of perforations are arranged on the dehydration spiral plate 52. The pitch of the dehydration spiral plate 52 is gradually reduced. When in use, when bottle chips fall into the transmission pipe 51, the fifth motor 53 drives the transmission shaft to rotate, and the transmission shaft drives the dehydration spiral plate 52 to rotate, so that the dehydration spiral plate 52 transports the bottle chips. As the pitch of the dehydration spiral plate 52 gradually decreases, the bottle chips are compressed, and the squeezed liquid is retained in the impurity removal tank 34 through the circular perforations. Then the dehydrated bottle chips enter the next process for processing.

[0041] The above embodiment discloses a PET bottle flake impurity removal device, in which the bottle flakes broken into a specified size are put into the storage box 23, and then the annular belt 11 drives a plurality of screening cages 16 to move. After the screening cage 16 moves to the position of one end of the first guide plate 29, when the screening cage 16 continues to move, the paddle plate 28 is restricted by the first guide plate 29, so that the paddle plate 28 drives the rotating sealing plate 27 to rotate through the extension shaft, so that the feeding end of the screening cage 16 is opened. When the screening cage 16 moves to below the discharge end of the storage box 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, and the control box 54 controls the first electric push rod 24 to start, so that the discharge end of the storage box 23 starts to unload materials. After the 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, and then the annular belt 11 drives the screening cage 16 to move intermittently again. When the paddle plate 28 is separated from the first guide plate 29, the feeding 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 move to the position of the driving belt 19, the driving wheel 18 and the driving belt 19 are rubbed tightly, and the second motor 20 drives the driving belt 19 to rotate. The driving belt 19 drives the pressing roller 17 to rotate through the driving wheel 18, so that the pressing roller 17 squeezes the bottle flakes inside the screening cage 16 and breaks up the bottle flakes, so that the bottle flakes can rub against the inner wall of the screening cage 16 and the outer side of the pressing roller 17, and the bottle flakes also rub against each other, so as to clean some impurities, and the impurities are filtered out from the screening cage 16 and fall on the bottom end of the annular belt 11, and then the impurities pass through the filter holes on the annular belt 11 and fall into the discharge box 31 for collection; When the endless belt 11 drives the screening cage 16 to move above the discharge box 31, the paddle plate 28 contacts one end of the second guide plate 30, so that the rotating sealing plate 27 is opened, and the bottle pieces inside the screening cage 16 fall into the discharge box 31, and then the second baffle plate is opened, so that the bottle pieces fall into the first screening box 33. When the endless belt 11 rotates again, the second baffle plate seals one end of the discharge box 31, and at the same time, the cleaning liquid is filled in the impurity removal tank 34, and the third motor 36 drives the mounting roller 35 to rotate, so that the paddle roller 37 rotates while revolving, and the paddle roller 37 makes the bottle pieces inside the first screening box 33 and the inner wall of the first screening box 33 separate. The third electric push rod 42 makes the fourth baffle plate slide, and the third electric push rod 42 makes the fourth baffle plate slide, and the first screening box 33 discharges the bottle flakes, and the bottle flakes are cleaned by the third electric push rod 42. The bottle flakes are in contact with the outer side of the swivel roller 37, so that the impurities on the bottle flakes are cleaned. Under the action of the liquid, the impurities are accumulated inside the first impurity discharge pipe 40 and are closely attached to one side of the third material baffle plate. When the swivel roller 37 cleans for a period of time and before the discharge end of the discharge box 31 feeds again, the third electric push rod 42 makes the fourth material baffle plate slide, and the discharge end of the first screening box 33 opens, so that the cleaned bottle flakes fall into the second screening box 43. Then, the discharge end of the second screening box 43 is closed, and when the discharge box 31 transports the bottle flakes to the first screening box 33 again, one end of the first impurity discharge pipe 40 is opened, so that the impurities float on the liquid surface. After the bottle pieces fall into the second screening box 43, the fourth motor 45 drives the mounting shaft to rotate, and the mounting shaft drives the spiral plate 44 and the separation 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, and the liquid in the impurity removal tank 34 enters the second screening box 43 through the water inlet hole. When the liquid flows, the bottle pieces are driven to move, so that the bottle pieces are transported to the position of the separation brush roller 47. When the separation brush roller 47 rotates, the impurities on the bottle pieces can be cleaned for a second time, and then the impurities and bottle pieces are removed. After being transported to one end of the second screening box 43, the impurities float on the liquid surface through the second impurity discharge 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 transmission shaft to rotate, and the transmission shaft drives the dehydration spiral plate 52 to rotate, so that the dehydration spiral plate 52 transports 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 perforations. Then, the dehydrated bottle flakes enter the next process for treatment.

[0042] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A PET bottle flakes impurity removal device, comprising an endless belt (11) and a first screening box (33), wherein a plurality of positioning wheels (13) are symmetrically and tightly arranged on the inner side of the endless belt (11), a friction belt (14) is symmetrically and tightly arranged on the outer side of the endless belt (11), and friction wheels are tightly and rubbedly arranged at positions corresponding to the positioning wheels (13) on the friction belt (14), the positioning wheels (13) and the rotating shafts at one end of the friction wheels are both rotatably arranged in mounting holes on one side of a first retaining frame (12), and a driving assembly for driving the endless belt (11) to rotate is arranged on one side of the first retaining frame (12), characterized in that: A plurality of screening cages (16) are fixedly provided at equal intervals on the inner side of the annular belt (11), a pressing roller (17) is rotatably provided inside each of the screening cages (16), a rotating sealing plate (27) is rotatably provided at the feeding end of each of the screening cages (16), a first cleaning mechanism for removing impurities from bottle flakes by the pressing roller (17) is provided on one side of the first retaining frame (12), a storage box (23) is provided in the middle of the inner side of the annular belt (11), a discharge box (31) is provided above the storage box (23), and the first screening box (33) is fixedly provided Inside the impurity removal tank (34), a mounting roller (35) is rotatably provided inside the first screening box (33), a retaining plate is symmetrically provided on the mounting roller (35), a plurality of swivel rollers (37) are rotatably provided between two retaining plates at equal intervals, a second cleaning mechanism for performing secondary impurity removal on bottle flakes is provided inside the first screening box (33), a second screening box (43) is connected to a discharge end of the first screening box (33), and a third cleaning mechanism for performing a third impurity removal on bottle flakes is provided inside the second screening box (43).

2. A PET bottle flakes impurity removal device according to claim 1, characterized in that: The driving assembly comprises a first motor (15), a fixed shaft is fixedly provided between the coaxial friction wheels, the friction wheels on the two fixed shafts at the bottom end of the annular belt (11) are driving friction wheels, the rotating shafts on one side of the two driving friction wheels are connected by a first belt transmission, and the rotating shaft on one side of the driving friction wheel is connected by a second belt transmission to the output end of the first motor (15), and the first motor (15) is fixedly arranged on one side of the first retaining frame (12).

3. A PET bottle flakes impurity removal device according to claim 1, characterized in that: The first cleaning mechanism comprises a driving wheel (18) and a paddle (28); driving wheels (18) are fixedly provided on rotating shafts at both ends of the pressing roller (17); driving belts (19) are provided at vertical straight positions on one side of the two first retaining frames (12); one side of the driving belts (19) is arranged at a moving position of the driving wheels (18); driving rollers and transmission rollers are respectively provided at both ends of the driving belts (19); the rotating shafts on one side of the driving rollers and transmission rollers are both rotatably arranged in a rotating hole on one side of the first retaining frame (12); the rotating shafts on the other ends of the driving rollers and transmission rollers are rotatably arranged in a rotating hole on one side of the second retaining frame; the second retaining frame is fixedly arranged on one side of the first retaining frame (12); the rotating shafts on one side of the driving rollers are fixedly connected to the output end of the second motor (20); the second motor (20) is fixedly arranged on one side of the second retaining frame; the rotating shafts on both ends of the rotating sealing plate (27) are fixedly provided An extension shaft is provided, one end of which is fixedly provided with a paddle plate (28), a circular plate is fixedly provided on the extension shaft, the circular plate is rotatably arranged in a fixed tube, the fixed tube is fixedly provided 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 arranged at the upper end of the inner side of the mounting frame, one end of the mounting frame is fixedly provided at the bottom end of the first retaining frame (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 provided on one side of the first retaining frame (12), the first guide plates (29) and the second guide plates (30) are both arranged within the moving track range of the paddle plate (28), and a collecting box (32) is provided below the annular belt (11).

4. A PET bottle flakes impurity removal device according to claim 3, characterized in that: A first material baffle is closely attached to the discharge end of the material storage box (23), first guide rails are slidably provided on both sides of the first material baffle, the first guide rails are fixedly arranged on the material storage box (23), the first material baffle 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 material storage box (23), an infrared sensor (25) is fixedly arranged at the inner bottom end of the first retaining frame (12) and at positions corresponding to both sides of the material storage box (23), an infrared receiver (26) is fixedly arranged on the mounting frame and at positions 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 electrically connected to a control box (54), and the control box (54) is fixedly arranged between the two first retaining frames (12).

5. A PET bottle flakes impurity removal device according to claim 4, characterized in that: Limiting frames (21) are fixedly provided on both sides of the screening cage (16), and rollers are symmetrically provided at one end of the limiting frames (21). The outer sides of the rollers are provided with rubber protective layers. The two rollers are respectively tightly attached to the inner side and the outer side of the positioning frame (22), and the positioning frame (22) is fixedly provided on one side of the first retaining frame (12).

6. A PET bottle flakes impurity removal device according to claim 1, characterized in that: The second cleaning mechanism comprises a gear (38), gears (38) are fixedly provided on the rotating shafts at both ends of the shifting roller (37), internal toothed rings (39) are fixedly provided at both ends of the first screening box (33) at positions corresponding to the gears (38), a plurality of the gears (38) are respectively meshed with the two internal toothed rings (39), a rotating shaft at one end of the mounting roller (35) is fixedly connected to the output end of a third motor (36), and the third motor (36) is fixedly provided on one side of the impurity removal tank (34). The toggle roller (37) is provided with a plurality of toggle bars, the first screening box (33) is connected with a first impurity discharge pipe (40), the first screening box (33) is connected with the discharge end of the discharge box (31), the discharge box (31) is fixedly arranged on the storage box (23), one end of the discharge box (31) is symmetrically slidably provided with a second material baffle plate, the second material baffle plate is slidably provided with a first guide tube, the first guide tube is fixedly arranged on one end of the discharge box (31), the first impurity discharge pipe (40) A third material baffle plate is symmetrically slidably provided at one end, a second guide tube is slidably provided on the third material baffle plate, the second guide tube is fixedly provided at one end of the first impurity removal tube (40), the second material baffle plate and the third material baffle plate are 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 (34), one end of the first mounting frame 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 material baffle plate is symmetrically slidably provided at the discharge end of the first screening box (33), the third guide tube is slidably provided on the fourth material baffle plate, the third guide tube is fixedly provided on the output end of the first screening box (33), the fourth material 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 (34), the second mounting frame is fixedly provided on the output end of the third electric push rod (42), and the third electric push rod (42) is fixedly provided on one side of the impurity removal tank (34).

7. A PET bottle flakes impurity removal device according to claim 6, characterized in that: The third cleaning mechanism comprises a spiral plate (44), the spiral plate (44) being fixedly mounted on a mounting shaft, the mounting shaft being rotatably mounted inside a second screening box (43), the second screening box (43) being fixedly mounted inside a de-impurity tank (34), one end of the mounting shaft being fixedly connected to an output end of a fourth motor (45), the fourth motor (45) being fixedly mounted on one side of the de-impurity tank (34), the other end of the mounting shaft being fixedly mounted with a separation brush roller (47), the separation brush roller (47) being provided with hard bristles, one end of the mounting shaft being fixedly mounted with a stirring shaft (49), the stirring shaft (49) being provided with a plurality of stirring rods, one end of the second screening box (43) being connected with a second de-impurity pipe (50), and the other end of the second screening box (43) being provided with a water inlet hole.

8. A PET bottle flakes impurity removal device according to claim 7, characterized in that: A filter screen (46) is provided at the water inlet of the second screening box (43), and a scraper rod is fixedly provided on the mounting shaft, the scraper rod being in close contact with one end of the second screening box (43).

9. A PET bottle flakes impurity removal device according to claim 8, characterized in that: A comb plate (48) is provided inside the second screening box (43) at a position corresponding to the position of the separation brush roller (47).

10. A PET bottle flakes impurity removal device according to claim 9, characterized in that: The discharge end of the second screening box (43) is connected to a transmission pipe (51), the transmission pipe (51) is fixedly arranged inside the impurity removal tank (34), a transmission shaft is rotatably arranged inside the transmission pipe (51), one end of the transmission shaft is fixedly connected to the output end of a fifth motor (53), the fifth motor (53) is fixedly arranged at one end of the transmission pipe (51), a dehydration spiral plate (52) is fixedly arranged on the transmission shaft, the dehydration spiral plate (52) is provided with a plurality of through holes, and the pitch of the dehydration spiral plate (52) is arranged to gradually decrease.

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