Label removing and cleaning device for waste plastic bottles and using method of label removing and cleaning device

Abstract

The invention relates to the technical field of waste plastic bottle label removing, and discloses a waste plastic bottle label removing and cleaning device which comprises a label removing box, a material injection nozzle is installed on the top face of the label removing box, an inner rotating frame is arranged on the inner side of the label removing box, and a set of inner label removing modules distributed in a circumferential array mode are installed on the inner rotating frame. A corrugated baffle is installed between every two inner label removing modules, a gear sleeve is arranged on the inner side of the inner rotating frame, a driving bevel gear ring is installed on the gear sleeve and is in transmission fit with the inner label removing modules, a positioning column connected with the label removing box is arranged on the inner side of the gear sleeve, and a guide module is installed on the positioning column. According to the waste plastic bottle piece label removing device, the distance between the outer toothed plate and the inner toothed plate is changed in a reciprocating mode, so that the strength of the outer toothed plate and the inner toothed plate acting on waste plastic bottle pieces is effectively changed, and the waste plastic bottle pieces of various specifications can receive the label removing effect of the outer toothed plate and the inner toothed plate; and the universality of the device, the label removing efficiency of the plastic bottle pieces and the yield after label removing are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste plastic bottle label removal, and more specifically, to a waste plastic bottle label removal and cleaning device and a use method thereof. Background Art

[0002] When recycling PET plastic bottles, corresponding label removal machines are needed to peel off the labels on various types of PET plastic bottles and to perform preliminary washing of the attached mud and dirt.

[0003] In the prior art, the patent document with publication number CN218743744U discloses a label removing machine for PET plastic bottles with recyclable labels, including a separation bin, a softening mechanism is arranged inside the separation bin, a label removing mechanism is arranged inside the separation bin, a feeding hopper is arranged on the top surface of the separation bin, the bottom surface of the feeding hopper passes through the top surface of the separation bin, a through groove is opened on the surface of the feeding hopper, a heat collecting tank is fixedly installed on the inner wall of the through groove, a nozzle is fixedly installed on the inner surface of the heat collecting tank, a water pipe is fixedly installed on the outer surface of the heat collecting tank, a drainage pipe is arranged on the bottom surface of the separation bin, the top surface of the drainage pipe passes through the bottom surface of the separation bin, a filter is slidably connected to the inner wall of the drainage pipe, and the above device sprays warm water through the nozzle, so that the plastic bottle can be rinsed with warm water before falling into the separation bin, so that The label on the surface of the plastic bottle is softened by the temperature, and the motor is started to drive the rotating rod to drive the spiral blade to start rotating. The setting of the spiral blade allows the plastic bottle to be continuously conveyed to the right in the separation bin, and the scraper provided in the mounting frame allows the plastic bottle label to be scraped and peeled off by the scraper during transportation. However, the above-mentioned label removal device is not convenient for effectively improving the label removal efficiency of plastic bottle flakes through the differential action of multiple teeth and the reciprocating change of the spacing between multiple teeth. On the other hand, the existing device is not convenient for improving the label removal effect of plastic bottle flakes through high-pressure flushing and hot label removal. Based on this, the present invention provides a waste plastic bottle label removal and cleaning device and a method of using the same to solve the technical problems raised in the above-mentioned background technology. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a waste plastic bottle label removal and cleaning device and a use method thereof. The present invention reciprocates the distance between the outer tooth plate and the inner tooth plate to effectively change the strength of the outer tooth plate and the inner tooth plate acting on the waste plastic bottle pieces, so that waste plastic bottle pieces of various specifications can be subjected to the label removal effect of the outer tooth plate and the inner tooth plate, thereby effectively improving the versatility of the device, the label removal efficiency of the plastic bottle pieces, and the yield rate after label removal.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waste plastic bottle label removal and cleaning device, comprising a label removal box, a material injection nozzle is installed on the top surface of the label removal box, an inner rotating frame is provided on the inner side of the label removal box, a group of inner label removal modules distributed in a circular array are installed on the inner rotating frame, a corrugated baffle is installed between each of the inner label removal modules, a gear sleeve is provided on the inner side of the inner rotating frame, an active bevel gear ring is installed on the gear sleeve, the active bevel gear ring is matched with the inner label removal module, a positioning column connected to the label removal box is provided on the inner side of the gear sleeve, and a positioning column is provided on the positioning column. A guide module is installed, and the guide module is used to reciprocately change the layout position of a group of internal label-removing modules on the internal rotating frame. An external rotating frame is rotatably sleeved on the internal rotating frame, and a group of external toothed plates distributed in a circular array are installed between the inner surfaces of the external rotating frame. The bottom of the label-removing box is connected to a separation box, and a bottle label separation mechanism and a cleaning mechanism are respectively arranged inside the separation box. A semi-valve column that can rotate periodically is rotatably connected to the connection between the separation box and the label-removing box. A transmission component is installed on the label-removing box, and the semi-valve column, the external rotating frame and the internal rotating frame are all driven by the transmission component.

[0006] As a preferred technical solution of the present invention, the bottle label separation mechanism includes an annular label filter net and a discharge inclined plate fixed in a separation box, a bottle outlet matched with the discharge inclined plate is fixedly provided on the separation box, a group of filter bottle strip holes distributed in a linear array are opened on the discharge inclined plate, two belt rollers are rotatably connected to the interior of the separation box and corresponding to the position below the discharge inclined plate, the two belt rollers are both transmission-connected to the annular label filter net, the annular label filter net is evenly distributed with filter holes, a transmission motor is installed on the side of the separation box, and the output shaft end of the transmission motor is fixedly connected to one of the belt rollers.

[0007] As a preferred technical solution of the present invention, the transmission component includes a coupling rotatably connected to the separation box, the coupling is transmission-connected with three first belts, the three first belts are transmission-connected with the outer rotating frame, the inner rotating frame and the gear sleeve respectively, the coupling is transmission-connected with a second belt, and the second belt is transmission-connected with a belt roller.

[0008] As a preferred technical solution of the present invention, the transmission component also includes a differential shaft rotatably connected to the separation box and a driven gear fixed on the semi-valve column, a semi-transmission gear is fixedly installed on the differential shaft, the semi-transmission gear is transmission-connected to the driven gear, a first pulley is installed on the differential shaft, a second pulley is fixedly installed on the coupling shaft, a third belt is transmission-connected between the first pulley and the second pulley, and the radius of the first pulley is 8 to 10 times the radius of the second pulley.

[0009] As a preferred technical solution of the present invention, the internal label stripping module includes a semi-arc box, both sides of the semi-arc box are connected to the corrugated baffles at adjacent positions, and sliders are fixedly installed on both sides of the semi-arc box, and the two sliders are slidably connected to the inner rotating frame, a connecting rod is hinged on one of the sliders and a shaft sleeve is rotatably connected to the slider, the connecting rod is connected to the guide module, and a linkage shaft rod coaxially arranged with the shaft sleeve is rotatably connected to the inner rotating frame, and a driven bevel gear connected to the driving bevel gear ring is fixedly installed at the bottom end of the linkage shaft rod, and the shaft sleeve is driven by the linkage shaft rod, and a label stripping shaft is rotatably connected between the inner surfaces of the semi-arc box, and linkage bevel teeth are installed on the label stripping shaft and the shaft sleeve, and the two linkage bevel teeth are meshed with each other, and a group of internal tooth plates distributed in a circular array are installed on the label stripping shaft.

[0010] As a preferred technical solution of the present invention, a linkage groove with openings at both ends and slidably connected to the linkage shaft rod is fixed inside the sleeve, the cross-sections of the linkage groove and the linkage shaft rod are both regular polygons, and the axis of the linkage shaft rod is perpendicular to the axis of the de-marking shaft.

[0011] As a preferred technical solution of the present invention, the guide module includes a reciprocating push rod fixed on the positioning column, a reciprocating plate is installed on the end of the reciprocating push rod, a driven rotating ring is rotatably connected to the reciprocating plate, the driven rotating ring is hinged to the connecting rod, and the axis of the reciprocating push rod is in the same straight line as the rotation axis of the external rotating frame.

[0012] As a preferred technical solution of the present invention, the cleaning mechanism includes a liquid storage chamber arranged inside the separation box, a group of electric heating rods are built in the liquid storage chamber, the liquid storage chamber is arranged below the annular filter net, a high-pressure pump is installed on the side of the separation box, the liquid inlet port of the high-pressure pump is connected to the liquid storage chamber, the liquid outlet port of the high-pressure pump is connected to a liquid supply ring pipe, a liquid separation ring is rotatably connected to the liquid supply ring pipe, a cleaning spray channel is provided at the axial position of the label removing shaft, and a plurality of cleaning spray holes distributed in a circular array and connected to the cleaning spray channel are provided on the label removing shaft, one end of the cleaning spray channel is rotatably connected to a liquid guide hose, and the other end of the liquid guide hose is connected to the inner cavity of the liquid supply ring pipe through the liquid separation ring.

[0013] As a preferred technical solution of the present invention, the outer tooth plate and the inner tooth plate are both provided with a group of regularly distributed teeth, and a single chip microcomputer is installed on the side of the separation box.

[0014] As a preferred technical solution of the present invention, a method for using a waste plastic bottle label removal and cleaning device comprises the following steps:

[0015] SS01, preset, before label removal and cleaning, a certain amount of cleaning liquid is injected into the liquid storage chamber, and after the cleaning liquid is injected, the electric heating rod inside the liquid storage chamber heats the cleaning liquid inside the liquid storage chamber to 75°C and maintains the constant temperature;

[0016] SS02, label removal and cleaning. During label removal and cleaning, the transmission motor outputs the speed at the set power. After the transmission motor outputs the speed, the plastic bottles to be cleaned and label removed are sent into the interior of the label removal box through the injection nozzle at the set flow rate. When the transmission motor outputs the speed, the high-pressure pump discharges high-pressure liquid, the outer rotating frame and the inner rotating frame rotate at a differential speed, and the semi-valve column rotates periodically at a set interval period. The plastic bottles after label removal enter the bottle label separation mechanism for bottle label separation.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the present invention is working, the reciprocating plate changes its position back and forth under the driving action of the reciprocating push rod. When the position of the reciprocating plate changes back and forth, the spacing between the outer tooth plate and the inner tooth plate changes back and forth. The reciprocating change of the spacing between the outer tooth plate and the inner tooth plate can effectively change the strength of the outer tooth plate and the inner tooth plate acting on the waste plastic bottle pieces, and make waste plastic bottle pieces of various specifications able to accept the label removal effect of the outer tooth plate and the inner tooth plate, thereby effectively improving the versatility of the device, the label removal efficiency of the plastic bottle pieces, and the yield rate after label removal, and effectively reducing the label leakage rate of the device.

[0019] 2. When the present invention is working, a group of electric heating rods are used to heat the cleaning liquid in the liquid storage chamber at a constant temperature. By heating the cleaning liquid, the plastic bottle labels on the waste plastic bottle pieces can be thermally shrunk and the separation effect of the bottle labels and the plastic bottles and the separation of the plastics can be improved, so that the plastic bottle cap labels can fully receive the label removal effect of the outer tooth plate and the inner tooth plate, and then the label removal effect of the device can be assisted to be improved. The semi-valve column is set in an interval periodic rotation state, so that the label removal box can be periodically unloaded into the separation box, and then the processing time and processing intensity of the plastic bottle pieces in the label removal box are effectively controlled, thereby improving the label removal and cleaning effect of the waste plastic bottle pieces.

[0020] 3. In the present invention, when the cleaning liquid containing the bottle labels enters the action area of ​​the annular filter net, the filter holes are set so that the cleaning liquid can flow back to the liquid storage chamber through the annular filter net, and the filtered bottle labels are transported to the designated collection device through the annular filter net.

[0021] 4. When removing labels from the present invention, the high-pressure pump discharges high-pressure liquid. Through the high-pressure liquid discharge of the high-pressure pump, on the one hand, high-pressure cleaning of plastic bottle flakes can be achieved, and on the other hand, the bottle labels on the plastic bottles can be washed off or separated by high-pressure flushing, thereby achieving a multi-effect label removal effect on plastic bottle flakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a device for removing labels and cleaning waste plastic bottles according to the present invention;

[0023] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0024] Figure 3 For the present invention Figure 1 A schematic cross-sectional structure diagram of ;

[0025] Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at B in the middle;

[0026] Figure 5 For the present invention Figure 3 A schematic diagram of the local enlarged structure at C in the middle;

[0027] Figure 6 It is a structural schematic diagram of the positioning column and the transmission motor of the present invention;

[0028] Figure 7 For the present invention Figure 6 A schematic cross-sectional structure diagram of ;

[0029] Figure 8 For the present invention Figure 7 A schematic diagram of the local enlarged structure at D in the middle;

[0030] Fig. 9 It is a structural schematic diagram of the belt roller and the semi-transmission gear of the present invention;

[0031] Fig.10 It is a schematic structural diagram of the external gear plate and the external rotating frame of the present invention.

[0032] In the figure: 1. label stripping box; 2. injection nozzle; 3. inner rotating frame; 4. corrugated baffle; 5. gear sleeve; 6. active bevel gear ring; 7. positioning column; 8. outer rotating frame; 9. outer gear plate; 10. separation box; 11. half valve column; 12. annular filter net; 13. unloading inclined plate; 14. filter bottle strip hole; 15. belt roller; 16. transmission motor; 17. coupling; 18. differential shaft; 19. driven gear; 2 0. Semi-transmission gear; 21. Semi-arc box; 22. Slider; 23. Connecting rod; 24. Bushing; 25. Linkage shaft; 26. De-marking shaft; 27. Internal gear plate; 28. Reciprocating push rod; 29. ​​Reciprocating plate; 30. Driven rotating ring; 31. Liquid storage chamber; 32. Electric heating rod; 33. High-pressure pump; 34. Liquid supply ring tube; 35. Liquid separation ring; 36. Cleaning spray hole; 37. Liquid guide hose; 38. Single chip microcomputer. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 10 As shown, the present invention provides a waste plastic bottle label removal and cleaning device, comprising a label removal box 1, and a material injection nozzle 2 is installed on the top surface of the label removal box 1;

[0035] An inner rotating frame 3 is provided on the inner side of the label stripping box 1, and a group of inner label stripping modules distributed in a circumferential array are installed on the inner rotating frame 3. A corrugated baffle 4 is installed between each inner label stripping module. A gear sleeve 5 is provided on the inner side of the inner rotating frame 3, and an active bevel gear ring 6 is installed on the gear sleeve 5.

[0036] The active bevel gear ring 6 cooperates with the inner label stripping module in transmission;

[0037] The inner side of the gear sleeve 5 is provided with a positioning column 7 connected to the label stripping box 1, and a guide module is installed on the positioning column 7, and the guide module is used to reciprocate and change the layout position of a group of inner label stripping modules on the inner rotating frame 3;

[0038] An outer rotating frame 8 is rotatably sleeved on the inner rotating frame 3, and a group of outer tooth plates 9 distributed in a circumferential array are installed between the inner surfaces of the outer rotating frame 8;

[0039] The bottom of the label removal box 1 is connected to a separation box 10, and a single chip computer 38 is installed on the side of the separation box 10;

[0040] The separation box 10 is provided with a bottle label separation mechanism and a cleaning mechanism inside;

[0041] The connection between the separation box 10 and the label removal box 1 is rotatably connected with a half valve column 11 that can rotate periodically;

[0042] A transmission component is installed on the label stripping box 1, and the half valve column 11, the outer rotating frame 8 and the inner rotating frame 3 are all driven by the transmission component.

[0043] The bottle label separation mechanism includes an annular label filter net 12 and a material discharge inclined plate 13 fixed in the separation box 10. The separation box 10 is fixedly provided with a bottle outlet that cooperates with the material discharge inclined plate 13.

[0044] A group of filter bottle strip holes 14 distributed in a linear array are provided on the unloading inclined plate 13;

[0045] By setting the filter bottle strip holes 14, the plastic bottles after cleaning and label removal can be filtered out through the filter bottle strip holes 14, and the miscellaneous labels removed from the plastic bottles can enter the action area of ​​the annular filter net 12 through the filter bottle strip holes 14;

[0046] Two belt rollers 15 are rotatably connected inside the separation box 10 and corresponding to the position below the material discharge inclined plate 13. The two belt rollers 15 are both transmission-connected to the annular filter net 12. The annular filter net 12 is evenly distributed with filter holes. A transmission motor 16 is installed on the side of the separation box 10. The output shaft end of the transmission motor 16 is fixedly connected to a belt roller 15.

[0047] When the cleaning liquid containing the bottle labels enters the action area of ​​the annular filter net 12, the filter holes are set so that the cleaning liquid can flow back to the liquid storage chamber 31 through the annular filter net 12, and the filtered bottle labels are transported to the designated collection device through the annular filter net 12;

[0048] The transmission component includes a coupling 17 rotatably connected to the separation box 10, and three first belts are transmission-connected to the coupling 17, and the three first belts are transmission-connected to the outer rotating frame 8, the inner rotating frame 3 and the gear sleeve 5 respectively. The coupling 17 is transmission-connected to a second belt, and the second belt is transmission-connected to a belt roller 15.

[0049] The transmission component also includes a differential shaft 18 rotatably connected to the separation box 10 and a driven gear 19 fixed to the half valve column 11. A half transmission gear 20 is fixedly mounted on the differential shaft 18, and the half transmission gear 20 is transmission-connected to the driven gear 19.

[0050] A first pulley is installed on the differential shaft 18, a second pulley is fixedly installed on the coupling shaft 17, a third belt is connected between the first pulley and the second pulley, and the radius of the first pulley is 9 times the radius of the second pulley;

[0051] By setting the speed difference between the first pulley and the second pulley and the transmission cooperation between the semi-transmitting gear 20 and the driven gear 19, the semi-valve column 11 can be periodically rotated at set intervals;

[0052] By setting the half valve column 11 in an interval periodic rotation state, the label removal box 1 can discharge materials into the separation box 10 at intervals, thereby effectively controlling the processing time and processing intensity of the plastic bottle flakes in the label removal box 1, thereby improving the label removal and cleaning effect of the waste plastic bottle flakes.

[0053] The inner label stripping module includes a semi-arc box 21, and both sides of the semi-arc box 21 are connected to the corrugated baffle 4 at the adjacent position;

[0054] When the position of the semi-arc box 21 changes under the driving action of the connecting rod 23, the corrugated baffle 4 is driven to retract, and the movable area of ​​the waste plastic bottle pieces in the label removal box 1 is effectively limited by the setting of the corrugated baffle 4;

[0055] Slide blocks 22 are fixedly mounted on both sides of the semi-arc box 21, and both slide blocks 22 are slidably connected to the inner rotating frame 3;

[0056] A connecting rod 23 is hinged on a slider 22 and a shaft sleeve 24 is rotatably connected to the slider 22, and the connecting rod 23 is connected to the guide module;

[0057] The guide module includes a reciprocating push rod 28 fixed on the positioning column 7, a reciprocating plate 29 is installed at the end of the reciprocating push rod 28, a driven rotating ring 30 is rotatably connected to the reciprocating plate 29, and the driven rotating ring 30 is hinged to the connecting rod 23. The axis of the reciprocating push rod 28 is in the same straight line as the rotation axis of the outer rotating frame 8;

[0058] During operation, the reciprocating plate 29 undergoes a reciprocating change in position under the driving action of the reciprocating push rod 28. When the position of the reciprocating plate 29 undergoes a reciprocating change, the spacing between the outer tooth plate 9 and the inner tooth plate 27 undergoes a reciprocating change. The reciprocating change in the spacing between the outer tooth plate 9 and the inner tooth plate 27 can effectively change the strength of the outer tooth plate 9 and the inner tooth plate 27 acting on the waste plastic bottle flakes, and enable waste plastic bottle flakes of various specifications to be able to accept the label removal effect of the outer tooth plate 9 and the inner tooth plate 27, thereby effectively improving the versatility of the device, the label removal efficiency of the plastic bottle flakes, and the yield rate after label removal, and effectively reducing the label leakage rate of the device;

[0059] The inner rotating frame 3 is rotatably connected with a linkage shaft 25 coaxially arranged with the shaft sleeve 24, and a driven bevel gear connected to the driving bevel gear ring 6 is fixedly installed at the bottom end of the linkage shaft 25, and the shaft sleeve 24 is driven by the linkage shaft 25;

[0060] The shaft sleeve 24 is fixedly provided with a linkage groove with both ends opened and slidably connected to the linkage shaft rod 25. The cross sections of the linkage groove and the linkage shaft rod 25 are both regular polygons.

[0061] The inner surface of the semi-arc box 21 is rotatably connected with a label-removing shaft 26, and linkage bevel gears are installed on the label-removing shaft 26 and the shaft sleeve 24, and the two linkage bevel gears are meshed with each other;

[0062] By setting the linkage groove and the linkage shaft 25, the linkage shaft 25 can continuously drive the label-removing shaft 26 during the process of changing the position of the label-removing shaft 26;

[0063] A group of inner tooth plates 27 distributed in a circumferential array are mounted on the label stripping shaft 26 , and a group of regularly distributed teeth are provided on the outer tooth plate 9 and the inner tooth plate 27 .

[0064] The axis of the linkage shaft 25 is perpendicular to the axis of the label-removing shaft 26 .

[0065] The cleaning mechanism includes a liquid storage chamber 31 disposed inside the separation box 10, and a group of electric heating rods 32 are built inside the liquid storage chamber 31;

[0066] During operation, a group of electric heating rods 32 are used to heat the cleaning liquid in the liquid storage chamber 31 at a constant temperature. By heating the cleaning liquid, the plastic bottle labels on the waste plastic bottle pieces can be thermally shrunk and the separation effect of the bottle labels and the plastic bottles and the plastics can be improved, so that the plastic bottle cap labels can fully receive the label removal effect of the outer tooth plate 9 and the inner tooth plate 27, thereby helping to improve the label removal effect of the device;

[0067] The liquid storage chamber 31 is arranged below the annular filter net 12, and a high-pressure pump 33 is installed on the side of the separation box 10. The liquid inlet port of the high-pressure pump 33 is connected to the liquid storage chamber 31, and the liquid outlet port of the high-pressure pump 33 is connected to a liquid supply ring pipe 34, and a liquid separator ring 35 is rotatably connected to the liquid supply ring pipe 34. A cleaning spray channel is provided at the axial position of the label removing shaft 26, and a plurality of cleaning spray holes 36 distributed in a circular array and connected to the cleaning spray channel are provided on the label removing shaft 26. One end of the cleaning spray channel is rotatably connected to a liquid guide hose 37, and the other end of the liquid guide hose 37 is connected to the inner cavity of the liquid supply ring pipe 34 through the liquid separator ring 35.

[0068] When removing the labels, the high-pressure pump 33 discharges high-pressure liquid. Through the high-pressure liquid discharge of the high-pressure pump 33, on the one hand, high-pressure cleaning of the plastic bottle flakes can be achieved, and on the other hand, the bottle labels on the plastic bottles can be washed off or separated by high-pressure flushing, thereby achieving a multi-effect label removal effect on the plastic bottle flakes.

[0069] A method for using a waste plastic bottle label removal and cleaning device, comprising the following steps:

[0070] SS01, preset, before label removal and cleaning, a certain amount of cleaning liquid is injected into the liquid storage chamber 31, and after the cleaning liquid is injected, the electric heating rod 32 inside the liquid storage chamber 31 heats the cleaning liquid inside the liquid storage chamber 31 to 75°C and maintains the constant temperature;

[0071] SS02, label removal and cleaning. During label removal and cleaning, the transmission motor 16 outputs the speed at the set power. After the transmission motor 16 outputs the speed, the plastic bottles to be cleaned and label removed are sent into the interior of the label removal box 1 through the injection nozzle 2 at a set flow rate. When the transmission motor 16 outputs the speed, the high-pressure pump 33 discharges high-pressure liquid, the outer rotating frame 8 and the inner rotating frame 3 rotate at a differential speed, and the semi-valve column 11 rotates periodically at a set interval period. The plastic bottles after label removal enter the bottle label separation mechanism for bottle label separation.

[0072] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0073] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for removing labels from waste plastic bottles and cleaning them, comprising a label removal box (1), the top surface of which is provided with a material injection nozzle (2), characterized in that: An inner rotating frame (3) is provided on the inner side of the label stripping box (1), a group of inner label stripping modules distributed in a circumferential array are installed on the inner rotating frame (3), corrugated baffles (4) are installed between each of the inner label stripping modules, a gear sleeve (5) is provided on the inner side of the inner rotating frame (3), an active bevel gear ring (6) is installed on the gear sleeve (5), the active bevel gear ring (6) is in transmission cooperation with the inner label stripping modules, a positioning column (7) connected to the label stripping box (1) is provided on the inner side of the gear sleeve (5), a guide module is installed on the positioning column (7), and the guide module is used to reciprocate and change a group of inner label stripping modules on the inner rotating frame (3). ), an outer rotating frame (8) is rotatably sleeved on the inner rotating frame (3), a group of outer tooth plates (9) distributed in a circumferential array are installed between the inner surfaces of the outer rotating frame (8), the bottom of the label removal box (1) is connected with a separation box (10), the interior of the separation box (10) is respectively provided with a bottle label separation mechanism and a cleaning mechanism, a semi-valve column (11) that can rotate periodically is rotatably connected to the connection between the separation box (10) and the label removal box (1), a transmission component is installed on the label removal box (1), and the semi-valve column (11), the outer rotating frame (8) and the inner rotating frame (3) are all driven by the transmission component.

2. The device for removing labels from waste plastic bottles according to claim 1 is characterized in that: The bottle label separation mechanism comprises an annular label filter net (12) and a material discharge inclined plate (13) fixed in a separation box (10); a bottle outlet matched with the material discharge inclined plate (13) is fixedly provided on the separation box (10); a group of filter bottle strip holes (14) distributed in a linear array are opened on the material discharge inclined plate (13); two belt rollers (15) are rotatably connected inside the separation box (10) and corresponding to the position below the material discharge inclined plate (13); the two belt rollers (15) are both transmission-connected to the annular label filter net (12); the annular label filter net (12) is evenly distributed with label filter holes; a transmission motor (16) is installed on the side of the separation box (10); the output shaft end of the transmission motor (16) is fixedly connected to one of the belt rollers (15).

3. The device for removing labels from waste plastic bottles according to claim 1 is characterized in that: The transmission component comprises a coupling (17) rotatably connected to the separation box (10); three first belts are transmission-connected to the coupling (17); the three first belts are transmission-connected to the outer rotating frame (8), the inner rotating frame (3) and the gear sleeve (5) respectively; a second belt is transmission-connected to the coupling (17); the second belt is transmission-connected to one of the belt rollers (15).

4. The device for removing labels from waste plastic bottles according to claim 3 is characterized by: The transmission component also includes a differential shaft (18) rotatably connected to the separation box (10) and a driven gear (19) fixed to the semi-valve column (11); a semi-transmission gear (20) is fixedly mounted on the differential shaft (18); the semi-transmission gear (20) is transmission-connected to the driven gear (19); a first pulley is mounted on the differential shaft (18); a second pulley is fixedly mounted on the coupling shaft (17); a third belt is transmission-connected between the first pulley and the second pulley; and a radius of the first pulley is 8 to 10 times that of the radius of the second pulley.

5. The device for removing labels from waste plastic bottles according to claim 4 is characterized in that: The inner label stripping module comprises a semi-arc box (21), both sides of the semi-arc box (21) are connected to the corrugated baffle (4) at the adjacent position, both sides of the semi-arc box (21) are fixedly installed with sliders (22), both sliders (22) are slidably connected to the inner rotating frame (3), a connecting rod (23) is hinged on one of the sliders (22) and a shaft sleeve (24) is rotatably connected to the slider (22), the connecting rod (23) is connected to the guide module, and the inner rotating frame (3) is rotatably connected to the shaft sleeve (24). ) is coaxially arranged with a linkage shaft (25), a driven bevel gear which is transmission-connected to the active bevel gear ring (6) is fixedly installed at the bottom end of the linkage shaft (25), the shaft sleeve (24) is driven by the linkage shaft (25), a label-removing shaft (26) is rotationally connected between the inner surfaces of the semi-arc box (21), the label-removing shaft (26) and the shaft sleeve (24) are both provided with linkage bevel gears, the two linkage bevel gears are meshed with each other, and a group of inner tooth plates (27) distributed in a circumferential array are installed on the label-removing shaft (26).

6. The device for removing labels from waste plastic bottles according to claim 5 is characterized by: The shaft sleeve (24) is fixedly provided with a linkage groove with two ends opened and slidably connected to the linkage shaft rod (25). The cross sections of the linkage groove and the linkage shaft rod (25) are both regular polygons. The axis of the linkage shaft rod (25) is perpendicular to the axis of the label removal shaft (26).

7. The device for removing labels from waste plastic bottles according to claim 6 is characterized by: The guiding module comprises a reciprocating push rod (28) fixed on a positioning column (7), a reciprocating plate (29) being installed at the end of the reciprocating push rod (28), a driven rotating ring (30) being rotatably connected to the reciprocating plate (29), the driven rotating ring (30) being hinged to the connecting rod (23), and the axis of the reciprocating push rod (28) and the rotation axis of the external rotating frame (8) being on the same straight line.

8. The device for removing labels from waste plastic bottles according to claim 7 is characterized in that: The cleaning mechanism comprises a liquid storage chamber (31) arranged inside the separation box (10), a group of electric heating rods (32) are built inside the liquid storage chamber (31), the liquid storage chamber (31) is arranged below the annular filter net (12), a high-pressure pump (33) is installed on the side of the separation box (10), the liquid inlet port of the high-pressure pump (33) is connected to the liquid storage chamber (31), the liquid outlet port of the high-pressure pump (33) is connected to a liquid supply ring pipe (34), a liquid separation ring (35) is rotatably connected to the liquid supply ring pipe (34), a cleaning spray channel is provided at the axial position of the label stripping shaft (26), a plurality of cleaning spray holes (36) distributed in a circumferential array and connected to the cleaning spray channel are provided on the label stripping shaft (26), one end of the cleaning spray channel is rotatably connected to a liquid guide hose (37), and the other end of the liquid guide hose (37) is connected to the inner cavity of the liquid supply ring pipe (34) through the liquid separation ring (35).

9. The device for removing labels from waste plastic bottles according to claim 1 is characterized by: The outer tooth plate (9) and the inner tooth plate (27) are both provided with a group of regularly distributed teeth, and a single chip computer (38) is installed on the side of the separation box (10).

10. The method for using the device for removing labels from waste plastic bottles according to any one of claims 1 to 9, characterized in that: The following steps are involved: SS01, preset, before label removal and cleaning, a certain amount of cleaning liquid is injected into the liquid storage chamber (31), and after the cleaning liquid is injected, the electric heating rod (32) inside the liquid storage chamber (31) heats the cleaning liquid inside the liquid storage chamber (31) to 75° C. and maintains the constant temperature; SS02, label removal and cleaning. During label removal and cleaning, the transmission motor (16) outputs a rotation speed at a set power. After the transmission motor (16) outputs a rotation speed, the plastic bottles to be cleaned and label removed are fed into the interior of the label removal box (1) through the injection nozzle (2) at a set flow rate. When the transmission motor (16) outputs a rotation speed, the high-pressure pump (33) discharges high-pressure liquid, the outer rotating frame (8) and the inner rotating frame (3) rotate at a differential speed, and the half valve column (11) rotates periodically at a set interval period. The plastic bottles after label removal enter the bottle label separation mechanism for bottle label separation.

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