A label removal device

Abstract

The present invention provides a label removal device, which relates to the field of label removal machines. The label removal device includes an annular sleeve, a rotating top cover, and multiple stirring mechanisms installed on the rotating top cover. The annular sleeve includes an outer cylinder and an inner cylinder arranged in a set, and a bottom sealing plate. An annular water storage space is formed between the outer cylinder and the inner cylinder. A discharge port is provided on the bottom sealing plate, and the discharge port is connected to a discharge conveying mechanism. The rotating top cover is rotatably installed on the upper part of the annular sleeve. Multiple stirring mechanisms are distributed in the annular water storage space at circumferential intervals. A partition structure between two adjacent stirring mechanisms is also provided on the lower side of the rotating top cover. An independent stirring space for mixing materials for a single stirring mechanism is formed between the partition structures. Each stirring mechanism only stirs and processes the material to be delabeled in its own independent stirring space. Multiple stirring mechanisms can share part of the stirring operation. The stirring range of each stirring mechanism is effectively divided, the stirring and mixing are more uniform, and the label removal efficiency and effect of the entire device are better.

Description

Technical Field

[0001] The present invention relates to the technical field of label removing machines, in particular to a label removing device. Background Art

[0002] In the recycling process of PET bottles, removing the labels from the bottles is a key step. The usual practice is to place the PET bottles in a stirring device filled with hot water, using the combined effects of hot water immersion and stirring to remove the labels.

[0003] For example, a Chinese utility model patent with authorization publication number CN207190067U and authorization publication date of April 6, 2018, discloses a label removal machine for the production of recycled polyester special materials. The machine specifically discloses that it includes a crusher, a hopper located below the crusher, an agitator connected to the bottom end of the hopper, and a solid-liquid separator connected to the bottom end of the agitator. A hot water supply pipe is connected to the hopper. The agitator includes a mixing drum, an agitator shaft located within the mixing drum, and multiple agitator blades extending radially from the outside of the agitator shaft. The solid-liquid separator includes a conveyor drum and a screw conveyor located within the conveyor drum. The centerline of the conveyor drum is inclined relative to the centerline of the agitator, and the bottom ends of the conveyor drum and the agitator are coplanar. After the polyester bottles are crushed by the crusher, the labels are separated from the bottles through agitation in the agitator and soaked in hot water, achieving label removal.

[0004] Existing label removal machines crush PET bottles before removing labels. The crushed PET material is then fed into a mixing drum, where it is driven by a shaft and impellers to create friction. However, if the label removal process is demanding, large numbers of PET bottles may be fed directly into the mixer. This often results in uneven mixing, making it difficult to completely remove the attached labels, leading to poor label removal efficiency and effectiveness. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a label removal device to solve the problem that when the workload of label removal processing is large, the stirring is uneven and the stuck labels cannot be completely removed, resulting in poor label removal efficiency and effect.

[0006] The technical solution of the label removal device of the present invention is:

[0007] The label removal device includes an annular sleeve, a rotating top cover, and multiple stirring mechanisms installed on the rotating top cover. The annular sleeve includes an outer cylinder and an inner cylinder arranged in a sleeve-like manner, and a bottom sealing plate sealed between the outer cylinder and the inner cylinder. An annular water storage space is formed between the outer cylinder and the inner cylinder. A discharge port is opened on the bottom sealing plate, and the discharge port is connected to a discharge conveying mechanism.

[0008] The rotating top cover is rotatably mounted on the upper part of the annular sleeve, and a plurality of the stirring mechanisms are circumferentially spaced and distributed in the annular water storage space. A partition structure is also provided on the lower side of the rotating top cover between two adjacent stirring mechanisms, and an independent stirring space is formed between the partition structures for mixing materials by a single stirring mechanism.

[0009] Beneficial effects: Multiple stirring mechanisms are arranged at circumferential intervals in the annular water storage space, a partition structure is located between two adjacent stirring mechanisms, and an independent stirring space is formed between the partition structures. The materials to be delabeled enter the independent stirring space of the annular water storage space in batches, and the stirring mechanism in each independent stirring space stirs and mixes the materials to be delabeled. Under the dual effects of hot water immersion and stirring friction, the labels on the materials to be delabeled are quickly removed; each stirring mechanism only stirs and processes the materials to be delabeled in its own independent stirring space, and multiple stirring mechanisms can share part of the stirring operation, and the stirring range of each stirring mechanism is effectively divided, and the stirring and mixing are more uniform. When one of the stirring mechanisms completes the stirring and delabeling, the rotating top cover rotates so that the independent stirring space where the stirring mechanism is located corresponds to the discharge port, and the discharge conveying mechanism is started to output the delabeled materials; during this process, other stirring mechanisms can continue to keep stirring and mixing, ensuring the effective removal of the stuck labels, and the delabeling efficiency and effect of the entire device are better.

[0010] Furthermore, the label removal device also includes a central spindle and a drive motor. The central spindle is rotationally fixedly connected to the center position of the rotating top cover, and the central spindle is transmission-connected to the drive motor.

[0011] Furthermore, a conductive slip ring is installed on the central main shaft, and the conductive slip ring includes a stator part and a rotor part, and the rotor part is conductively connected to the multiple stirring mechanisms respectively.

[0012] Furthermore, the separation structure is a separation plate arranged perpendicular to the circumferential direction of the annular sleeve, and the separation plate is respectively in clearance fit with the bottom sealing plate, the outer cylinder and the inner cylinder.

[0013] Furthermore, the rotating top cover includes a center disk and an annular outer plate. The center disk and the annular outer plate are coaxially arranged, and the annular outer plate is circumferentially slidably installed on the upper parts of the outer cylinder and the inner cylinder.

[0014] Furthermore, a first sealing ring is provided on the inner side of the outer cylinder and the outer side of the inner cylinder respectively, and a second sealing ring is provided on the outer periphery and the inner periphery of the annular outer plate respectively, and the first sealing ring and the second sealing ring are movably sealed together.

[0015] Furthermore, the stirring mechanism includes a stirring motor, a stirring shaft and blades. The stirring motor is fixed on the annular outer plate, and the stirring motor is connected to the stirring shaft in a non-rotatable manner.

[0016] Furthermore, the discharging and conveying mechanism is a spiral discharging mechanism, which includes a discharging motor, a discharging cylinder and a first spiral conveying piece. The discharging cylinder extends obliquely upward and is connected to the discharging port.

[0017] Furthermore, a discharge port is provided on the discharge barrel, and the discharge port is higher than the water storage liquid level of the annular sleeve. A sewage valve is also provided at the lower part of the discharge barrel.

[0018] Furthermore, a feed port is provided on the side wall of the outer cylinder, and a screw feeding mechanism is connected to the feed port. The screw feeding mechanism includes a feed motor, a feed barrel and a second bolt conveying piece, and a feed hopper is provided on the feed barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a partial front view schematic diagram of the label removal device in the specific embodiment 1 of the present invention;

[0020] Figure 2 It is a schematic front view of the spiral discharging mechanism in the specific embodiment 1 of the label removal device of the present invention;

[0021] Figure 3 This is a schematic top view of the label removal device in specific embodiment 1 of the present invention.

[0022] In the figure: 1. annular sleeve; 10. annular water storage space; 11. outer cylinder; 110. feed port; 12. inner cylinder; 13. bottom sealing plate; 130. discharge port; 14. rotating top cover; 140. center disk; 141. annular outer plate; 15. first sealing ring; 16. second sealing ring; 2. stirring mechanism; 20. stirring motor; 21. stirring shaft; 22. blades; 23. partition plate; 24. center main shaft; 25. drive motor; 3. spiral discharging mechanism; 30. discharging motor; 31. discharging barrel; 32. first spiral conveying piece; 33. discharge port; 34. drain valve; 4. spiral feeding mechanism; 40. feeding motor; 41. feeding barrel; 42. second bolt conveying piece; 43. feeding hopper. DETAILED DESCRIPTION

[0023] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0024] Specific embodiment 1 of the label removal device of the present invention, as Figures 1 to 3As shown, the label removal device includes an annular sleeve 1, a rotating top cover 14 and a plurality of stirring mechanisms 2 installed on the rotating top cover 14. The annular sleeve 1 includes an outer cylinder 11 and an inner cylinder 12 arranged in a suit, and a bottom sealing plate 13 sealed between the outer cylinder 11 and the inner cylinder 12. An annular water storage space 10 is formed between the outer cylinder 11 and the inner cylinder 12. A discharge port 130 is provided on the bottom sealing plate 13, and the discharge port 130 is connected to a discharge conveying mechanism; the rotating top cover 14 is rotatably installed on the upper part of the annular sleeve 1, and the plurality of stirring mechanisms 2 are distributed in the annular water storage space 10 at circumferential intervals. A partition structure between two adjacent stirring mechanisms 2 is also provided on the lower side of the rotating top cover 14, and an independent stirring space for mixing materials for a single stirring mechanism 2 is formed between the partition structures.

[0025] A plurality of stirring mechanisms 2 are arranged at circumferential intervals in the annular water storage space 10, a partition structure is located between two adjacent stirring mechanisms 2, and an independent stirring space is formed between the partition structures. The materials to be delabeled enter the independent stirring spaces of the annular water storage space 10 in batches, and the stirring mechanisms 2 in each independent stirring space stir and mix the materials to be delabeled. Under the dual effects of hot water immersion and stirring friction, the labels on the materials to be delabeled are quickly removed; each stirring mechanism 2 only stirs and processes the materials to be delabeled in its own independent stirring space, and the plurality of stirring mechanisms 2 can share part of the stirring operation, and the stirring range of each stirring mechanism 2 is effectively divided, and the stirring and mixing are more uniform. When one of the stirring mechanisms 2 completes the stirring and delabeling, the rotating top cover 14 rotates so that the independent stirring space where the stirring mechanism 2 is located corresponds to the discharge port 130, and the discharge conveying mechanism is started to output the delabeled materials; during this process, the other stirring mechanisms 2 can continue to keep stirring and mixing, ensuring the effective removal of the stuck labels, and the delabeling efficiency and effect of the entire device are better.

[0026] In this embodiment, the label removal device further includes a central spindle 24 and a drive motor 25. The central spindle 24 is fixedly connected to the center of the rotating top cover 14, and the central spindle 24 is in transmission connection with the drive motor 25. Specifically, two mounting plates are provided in the inner cylinder 12. The two mounting plates are arranged vertically and spaced apart from each other in the axial direction of the annular sleeve 1. Holes are opened in the centers of the two mounting plates and bearings are installed thereon. The central spindle 24 is connected to the bearings of the two mounting plates. The lower end of the central spindle 24 is connected to the motor shaft of the drive motor 25 by a belt. The drive motor 25 drives the central spindle 24 and the rotating top cover 14 to rotate.

[0027] The rotating top cover 14 includes a center disk 140 and an annular outer plate 141. The center disk 140 and the annular outer plate 141 are coaxially arranged. The annular outer plate 141 is circumferentially slidably mounted on the upper portion of the outer cylinder 11 and the inner cylinder 12. In addition, a first sealing ring 15 is provided on the inner side of the outer cylinder 11 and the outer side of the inner cylinder 12, respectively. A second sealing ring 16 is provided on the outer periphery and inner periphery of the annular outer plate 141, respectively. The first sealing ring 15 and the second sealing ring 16 are movably sealed together. The first sealing ring 15 on the inner side of the outer cylinder 11 is movably sealed together with the second sealing ring 16 on the outer periphery of the annular outer plate 141, and the second sealing ring 16 on the inner periphery of the annular outer plate 141 is movably sealed together with the first sealing ring 15 on the outer side of the inner cylinder 12, thereby ensuring that hot water will not overflow or seep out when the stirring mechanism 2 is working, and the cleanliness of the entire machine is better when working.

[0028] To ensure effective electrical connection between the stirring mechanisms 2 and the rotating cover 14, a conductive slip ring 26 is mounted on the central spindle 24. The conductive slip ring 26 comprises a stator portion and a rotor portion, with the rotor portion being electrically connected to each of the multiple stirring mechanisms 2. The stator portion of the conductive slip ring 26 electrically cooperates with the rotor portion, which rotates with the central spindle 24. The rotor portion is provided with multiple terminals, electrically connecting to the corresponding stirring mechanisms 2. The stator portion of the conductive slip ring 26 remains relatively stationary and is connected to the power supply via the terminals on the stator portion. This prevents wire entanglement caused by the stirring mechanisms 2 rotating about the central spindle 24.

[0029] The stirring mechanism 2 includes a stirring motor 20, a stirring shaft 21 and blades 22. The stirring motor 20 is fixed on the annular outer plate 141, and the stirring motor 20 is connected to the stirring shaft 21 to prevent rotation. The stirring motor 20 drives the stirring shaft 21 and the blades 22 to rotate, thereby stirring and mixing the material to be delabeled and the hot water in the independent stirring space. The partition structure is a partition plate 23 arranged perpendicular to the circumferential direction of the annular sleeve 1, and the partition plate 23 is respectively fitted with the bottom sealing plate 13, the outer cylinder 11 and the inner cylinder 12. The partition plate 23 set in the gap can not only separate the annular water storage space 10 and prevent the material to be delabeled from moving back and forth between different independent stirring spaces, but also ensure that the independent stirring space can be rotated and adjusted around the central main axis 24, so as to facilitate the smooth output of the material after delabeling.

[0030] The discharging and conveying mechanism is a spiral discharging mechanism 3, which includes a discharging motor 30, a discharging barrel 31, and a first spiral conveying piece 32. The discharging barrel 31 extends obliquely upward and is connected to the discharging port 130. A discharge port 33 is provided on the discharging barrel 31, which is higher than the water storage level of the annular sleeve 1. A drain valve 34 is also provided at the bottom of the discharging barrel 31. Since the discharge port 33 of the spiral discharging mechanism 3 is higher than the water storage level of the annular sleeve 1, hot water and materials will not leak from the discharge port 33 during normal mixing and label removal. After label removal is completed, the discharging motor 30 is started, and the first spiral conveying piece 32 is used to rotate and drive the materials to be effectively discharged, while the hot water remains stored in the annular water storage space 10 and the discharging barrel 31. When a large amount of label residue accumulates in the annular water storage space 10, the drain valve 34 can be opened to directly drain the wastewater and label residue.

[0031] In order to facilitate the control of the feeding speed, a feeding port 110 is provided on the side wall of the outer cylinder 11, and a spiral feeding mechanism 4 is connected to the feeding port 110. The spiral feeding mechanism 4 includes a feeding motor 40, a feeding barrel 41 and a second bolt conveying piece 42, and a feeding hopper 43 is provided on the feeding barrel 41. The feeding motor 40 is used to drive the second bolt conveying piece 42 to rotate, so that the material to be delabeled in the feeding hopper 43 is quantitatively input into the corresponding independent stirring space. The start and stop and the input amount can be effectively controlled, ensuring that the stirring mechanism 2 in each independent stirring space can effectively complete the stirring and delabeling work. In addition, in order to improve the heat preservation effect of hot water, the outside of the outer cylinder 11 and the outside of the discharge barrel 31 are coated with an insulation layer to ensure that the hot water still maintains a high temperature after long-term operation, thereby improving the effect of the delabeling process.

[0032] In other embodiments of the label removal device of the present invention, to simplify the structure of the device, the rotating cover is not limited to the split structure of the first embodiment. The rotating cover can also be designed as an integrated structure, with the central spindle mounted at the center of the integrated rotating cover, and multiple stirring mechanisms circumferentially spaced on the integrated rotating cover. In addition, the spiral feeding mechanism can be replaced with a belt conveyor structure, which can also effectively control the feeding operation.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A label removal device, characterized in that: The invention comprises an annular sleeve, a rotating top cover and a plurality of stirring mechanisms mounted on the rotating top cover. The annular sleeve comprises an outer cylinder and an inner cylinder arranged in a sleeve-like manner, and a bottom sealing plate sealed between the outer cylinder and the inner cylinder. An annular water storage space is formed between the outer cylinder and the inner cylinder. A discharge port is provided on the bottom sealing plate, and the discharge port is connected to a discharge conveying mechanism. The rotating top cover is rotatably mounted on the upper portion of the annular sleeve, and a plurality of the stirring mechanisms are circumferentially spaced and distributed in the annular water storage space. A partition structure is further provided on the lower side of the rotating top cover between two adjacent stirring mechanisms, and an independent stirring space is formed between the partition structures for mixing materials by a single stirring mechanism. The label removing device further comprises a central spindle and a driving motor. The central spindle is rotationally fixedly connected to the center of the rotating top cover, and the central spindle is in transmission connection with the driving motor.

2. The label removal device according to claim 1, characterized in that: A conductive slip ring is installed on the central main shaft. The conductive slip ring includes a stator part and a rotor part. The rotor part is electrically connected to the multiple stirring mechanisms respectively.

3. The label removal device according to claim 1, characterized in that: The partition structure is a partition plate arranged perpendicular to the circumferential direction of the annular sleeve, and the partition plate is respectively in clearance fit with the bottom sealing plate, the outer cylinder and the inner cylinder.

4. The label removal device according to claim 1, characterized in that: The rotating top cover comprises a central disk and an annular outer plate. The central disk and the annular outer plate are coaxially arranged. The annular outer plate is circumferentially slidably mounted on the upper parts of the outer cylinder and the inner cylinder.

5. The label removal device according to claim 4, characterized in that: A first sealing ring is provided on the inner side of the outer cylinder and the outer side of the inner cylinder respectively. A second sealing ring is provided on the outer periphery and the inner periphery of the annular outer plate respectively. The first sealing ring and the second sealing ring are movably sealed together.

6. The label removal device according to claim 4, characterized in that: The stirring mechanism includes a stirring motor, a stirring shaft and blades. The stirring motor is fixed on the annular outer plate and is non-rotatably connected to the stirring shaft.

7. The label removal device according to claim 1, characterized in that: The discharging and conveying mechanism is a spiral discharging mechanism, which includes a discharging motor, a discharging cylinder and a first spiral conveying piece. The discharging cylinder extends obliquely upward and is connected to the discharging port.

8. The label removal device according to claim 7, characterized in that: The discharge barrel is provided with a discharge port, which is higher than the water storage liquid level of the annular sleeve. The lower part of the discharge barrel is also provided with a sewage valve.

9. The label removal device according to claim 1, characterized in that: A feed port is provided on the side wall of the outer cylinder, and a screw feed mechanism is connected to the feed port. The screw feed mechanism includes a feed motor, a feed barrel and a second bolt conveying piece, and a feed hopper is provided on the feed barrel.

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