Feeding device based on PET bottle recovery

Abstract

The feeding device comprises a base, a screen is fixed to the inner wall of a through hole formed in the surface of the base, a support is fixed to the outer wall of the top of the base, a limiting disc and an inner gear ring are welded between the inner walls of the two sides of the support, and a rotating disc is movably connected to the inner surface of the limiting disc; the surface of the rotating disc is movably connected with a containing assembly, and the containing assembly comprises a hollow shaft, a material barrel and a middle frame. Positive and negative rotation output of a single motor is converted into efficient reciprocating swing of the charging barrel on the screen through the driving motor, the driving gear, the driven gear and the inner gear ring, and the swing is combined with up-and-down movement of moving blades driven by an independently-controlled electric telescopic rod to form compound motion of horizontal shaking and vertical stirring. By means of the structural design, accumulated PET bottles can be effectively scattered, fragments, bottle caps and other impurities mixed in the PET bottles are forced to be rapidly separated and penetrate through the screen holes, and screening thoroughness and efficiency are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of PET bottle recycling and feeding technology, and in particular to a feeding device based on PET bottle recycling. Background Technology

[0002] As one of the most common beverage packaging materials, the recycling and reuse of PET bottles is of great significance for resource conservation and environmental protection. In the PET bottle recycling process, feeding is the first key step, which involves transporting the collected waste PET bottles to subsequent cleaning, crushing, and sorting equipment. However, recycled PET bottles are often mixed with a large number of impurities, such as bottle caps, labels, residual liquids, mud, sand, and metal fragments. If these impurities directly enter the subsequent processes, they will not only contaminate the cleaning system and wear down the equipment, but also affect the quality of the recycled PET material and even cause equipment failure and shutdown. Currently, the most common PET bottle feeding devices in the industry mainly use vibrating screens for preliminary impurity removal. Traditional vibrating screens are usually driven by a vibrating motor to vibrate the screen at high frequency, causing the PET bottles to jump forward on the screen surface while impurities fall through the screen holes. Although such equipment can achieve a certain degree of screening, it has obvious shortcomings. The screening effect of the vibrating screen is sensitive to the material accumulation state. When the PET bottles are piled up thickly, the impurities at the bottom are difficult to separate effectively, and the screening is incomplete. Relying only on horizontal or vertical vibration has limited effect on removing fine impurities such as sand and label fragments remaining in the bottle. Therefore, developing a PET bottle recycling and feeding device with high screening efficiency and the ability to achieve integrated automatic operation of screening and feeding has become an urgent technical problem to be solved in this field. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a feeding device based on PET bottle recycling.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A feeding device based on PET bottle recycling includes a base, a screen fixed to the inner wall of a through hole on the surface of the base, a bracket fixed to the outer wall of the top of the base, a placement component mounted on a gear transmission mechanism installed between the inner walls of the two sides of the bracket, the placement component reciprocating along the upper surface of the screen under the transmission of the gear transmission mechanism, a feeding cylinder fixed to the inner wall of the through hole on the surface of the base by an embedding method, and a fan-shaped feeding mechanism installed at the bottom of the feeding cylinder.

[0005] As a further embodiment of the present invention: the gear transmission mechanism includes a limiting disk and an internal gear ring welded between the inner walls of both sides of the bracket. A turntable is movably connected to the inner surface of the limiting disk. The gear transmission mechanism also includes a drive motor fixed to the outer wall of the bottom of the base. A drive shaft fixed at the output end of the drive motor has a drive gear fixed at the top. A driven gear that meshes with the drive gear and the internal gear ring is connected to the outer wall of the hollow shaft by a key.

[0006] As a further embodiment of the present invention: the placement assembly includes a hollow shaft, a material cylinder and an intermediate frame. The hollow shaft is movably connected to the inner wall of a through hole opened on the surface of the turntable. The intermediate frame is welded to the bottom of the hollow shaft. The material cylinder is fixed to the outer wall of the bottom of the intermediate frame, and a sponge pad is adhered to the bottom of the material cylinder.

[0007] As a further embodiment of the present invention: a collection cylinder is fixed to the bottom outer wall of the base, and the top of the collection cylinder and the bottom of the screen are directly opposite each other, and a cover plate is threaded to the bottom of the collection cylinder.

[0008] As a further embodiment of the present invention: an electric telescopic rod is fixed to the top outer wall of the bracket, a rotating plate is rotatably mounted at the output end of the electric telescopic rod, a connecting rod is fixed to the bottom of the rotating plate and is movably connected to the inner wall of the hollow shaft, and a moving blade is fixed to the bottom of the connecting rod.

[0009] As a further embodiment of the present invention: the fan-shaped feeding mechanism includes a fan-shaped plate one, which is welded to the bottom of the feeding cylinder, and a rotating rod is movably connected to the inner wall of the through hole opened on the surface of the fan-shaped plate one, and a fan-shaped plate two is fixed to the outer circumference of the rotating rod.

[0010] As a further embodiment of the present invention: a contact plate is fixed to the bottom of the rotating rod, and a torsion spring is sleeved on the outer circumference of the rotating rod, with the two ends of the torsion spring fixed to the bottom outer wall of the fan-shaped plate and the top of the contact plate, respectively.

[0011] As a further embodiment of the present invention: a toggle plate is fixed to the side of the material cylinder, and a rotating rod that cooperates with the toggle plate is fixed to the side of the contact plate.

[0012] As a further embodiment of the present invention: a support frame is welded to the side of the bracket.

[0013] As a further embodiment of the present invention: a controller is installed on the side of the support frame.

[0014] Compared with the prior art, the present invention provides a feeding device based on PET bottle recycling, which has the following beneficial effects: 1. By converting the forward and reverse output of a single motor into the efficient reciprocating oscillation of the material cylinder on the screen through the drive motor, drive gear, driven gear, and internal gear ring, this oscillation is combined with the up-and-down movement of the moving blades driven by the independently controlled electric telescopic rod, forming a compound motion of horizontal shaking and vertical tumbling. This structural design can effectively break up the piled PET bottles, forcing the fragments, bottle caps and other impurities mixed in to quickly separate and pass through the screen holes, significantly improving the thoroughness and efficiency of screening.

[0015] 2. After screening, impurities fall directly through the screen into the detachable collection cylinder below, achieving immediate and sealed collection of impurities and avoiding secondary pollution. After screening and cleaning, the PET bottles do not need to be transferred and can enter the next feeding stage through the rotation of the material cylinder, reducing the material transfer process.

[0016] 3. When the material cylinder rotates in one direction, the actuating plate fixed on it will actuate the rotating rod, thereby driving the first and second sector plates to move and open the discharge channel. By adjusting the speed of the drive motor or the design parameters of the actuating plate, the frequency and amplitude of the opening and closing of the sector plates can be indirectly controlled, thereby achieving dynamic and flexible control of the PET bottle feeding rate and single discharge volume.

[0017] 4. Once the material cylinder reaches its designated position, the fan-shaped feeding mechanism is automatically triggered. By controlling the amplitude and contact time of the rotating rod by the actuating plate, the feeding rate and the amount of PET bottles fed each time can be dynamically adjusted. The structure is simple, direct, and reliable, greatly reducing the complexity of the control system and minimizing maintenance costs.

[0018] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This invention has a simple structure and is easy to operate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a feeding device based on PET bottle recycling proposed in this invention; Figure 2 This is a schematic diagram of the installation structure of the feeding component of a PET bottle recycling-based feeding device proposed in this invention; Figure 3 This is a schematic diagram of the main bottom structure of a feeding device based on PET bottle recycling proposed in this invention; Figure 4 This is a cross-sectional view of the feeding component of a PET bottle recycling-based feeding device proposed in this invention. Figure 5 This is a schematic diagram of the bottom structure of the feeding component of a feeding device based on PET bottle recycling proposed in this invention; Figure 6This is an exploded view of the feeding component of a PET bottle recycling-based feeding device proposed in this invention.

[0020] In the diagram: 1. Base; 2. Support frame; 3. Controller; 4. Material cylinder; 5. Hollow shaft; 6. Electric telescopic rod; 7. Connecting rod; 8. Bracket; 9. Rotating plate; 10. Drive gear; 11. Driven gear; 12. Intermediate frame; 13. Actuating plate; 14. Screen; 15. Limiting disc; 16. Internal gear ring; 17. Turntable; 18. Moving blade; 19. Drive shaft; 20. Collection cylinder; 21. Drive motor; 22. Cover plate; 23. Feeding cylinder; 24. Rotating rod; 25. Sector plate one; 26. Sector plate two; 27. Torsion spring; 28. Contact plate; 29. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] A feeding device based on PET bottle recycling, such as Figures 1 to 6 As shown, the system includes a base 1. A screen 14 is fixed to the inner wall of a through hole on the surface of the base 1 by screws. A bracket 8 is fixed to the outer wall of the top of the base 1 by bolts. A limiting disc 15 and an internal gear ring 16 are welded between the inner walls of the two sides of the bracket 8. A turntable 17 is rotatably connected to the inner surface of the limiting disc 15. A placement assembly is rotatably connected to the surface of the turntable 17. The placement assembly includes a hollow shaft 5, a material cylinder 4, and an intermediate frame 12. The hollow shaft 5 is rotatably connected to the inner wall of the through hole on the surface of the turntable 17, and the intermediate frame 12 is welded to the bottom of the hollow shaft 5. The material cylinder 4 is fixed to the bottom outer wall of the intermediate frame 12 by bolts, and a sponge pad is adhered to the bottom of the material cylinder 4. The placement assembly is driven by a drive mechanism, which includes a drive shaft 19 and a drive motor 21. The drive motor 21 is fixed to the bottom outer wall of the base 1 by screws. The drive shaft 19 is connected to the output end of the drive motor 21 by a coupling. The top of the drive shaft 19 is connected to the drive gear 10 by a key, and the outer circumference of the hollow shaft 5 is connected to the driven gear 11, which meshes with the drive gear 10 and the internal gear ring 16, by a key. When PET bottles need to be recycled and fed, in the initial state, the bottom of the material cylinder 4 is in contact with the upper surface of the screen 14 through the sponge pad, wherein the outer diameter of the screen 14 is larger than the outer diameter of the material cylinder 4. Then, the PET bottles to be fed are placed inside the material cylinder 4 for temporary storage. After the PET bottles are placed, the drive motor 21 drives the drive shaft 19 and the drive gear 10 to rotate clockwise and counterclockwise at a certain angle. During the rotation, the drive gear 10 drives the driven gear 11 that meshes with it to rotate. During the rotation, the driven gear 11 also meshes with the inner surface of the inner gear ring 16, so the driven gear 11 revolves around the inner gear ring 16 while rotating. Since the output end of the drive motor 21 drives the drive shaft 19 to rotate clockwise and counterclockwise, the bottom of the material cylinder 4 swings back and forth relative to the upper surface of the screen 14. During the left and right swinging, the material cylinder 4 accelerates the shaking of the temporarily stored PET bottles inside. The purpose of this is to screen and clean the impurities such as fragments and bottle caps contained in the mixed PET bottles. Since the swing range of the material cylinder 4 is limited within the screen 14, the impurities after being screened fall through the screen holes on the screen 14 during the left and right swing of the material cylinder 4, thus achieving the screening of impurities.

[0023] The bottom outer wall of the base 1 is fixed with a collection cylinder 20 by screws, and the top of the collection cylinder 20 and the bottom of the screen 14 are directly opposite each other. The bottom of the collection cylinder 20 is threaded with a cover plate 22. The collection cylinder 20 can be used to collect the sieved impurities. When it is necessary to clean the impurities, simply rotate the cover plate 22 along the bottom of the collection cylinder 20. When the cover plate 22 is removed from the bottom of the collection cylinder 20, the impurities are discharged from the bottom of the collection cylinder 20 under their own gravity.

[0024] An electric telescopic rod 6 is fixed to the top outer wall of the bracket 8 by bolts. A rotating plate 9 is rotated at the output end of the electric telescopic rod 6. A connecting rod 7 that is movably connected to the inner wall of the hollow shaft 5 is fixed to the bottom of the rotating plate 9 by screws. A moving blade 18 is fixed to the bottom of the connecting rod 7 by screws. To further improve the screening efficiency of impurities, an electric telescopic rod 6 is provided to dynamically adjust the height of the connecting rod 7 and the moving blade 18 within a certain range. As the moving blade 18 moves up and down along the inside of the material cylinder 4, it moves the PET bottles inside the material cylinder 4 up and down, thereby increasing the falling rate of impurities accumulated in the gaps between the PET bottles, so that they can come into contact with the surface of the screen 14 for screening.

[0025] The inner wall of the through hole on the surface of the base 1 is fixed with a feeding cylinder 23 by embedding. A sector plate 26 is welded to the bottom of the feeding cylinder 23. A rotating rod 24 is rotatably connected to the inner wall of the through hole on the surface of the sector plate 26. A contact plate 29 is fixed to the bottom of the rotating rod 24 by screws. A torsion spring 28 is sleeved on the outer circumference of the rotating rod 24. The two ends of the torsion spring 28 are respectively fixed to the bottom outer wall of the sector plate 26 and the top of the contact plate 29. A sector plate 27 is fixed to the outer circumference of the rotating rod 24 by screws. When the screened PET bottles need to be fed, the drive motor 21 drives the drive shaft 19 and the drive gear 10 to rotate, causing the material cylinder 4 to switch from its original reciprocating oscillation state to a unidirectional rotation state. When the bottom of the material cylinder 4 moves to a relative opening with the top opening of the feeding cylinder 23, the screened PET bottles fall into the torsion spring 28 under their own gravity. In the initial state, the elastic force of the torsion spring 28 keeps the sector plate 1 26 stable relative to the sector plate 27. The two fan-shaped plates 27 are identical in specifications and are both fan-shaped structures. When the fan-shaped plates 26 and 27 are misaligned, they block the falling PET bottles. When the PET bottles need to be fed, the rotating rod 24 is driven to rotate relative to the fan-shaped plate 26. During the rotation, the rotating rod 24 drives the fan-shaped plate 27 to rotate relative to the fan-shaped plate 26. After the fan-shaped plates 26 and 27 come into contact with each other in the longitudinal direction, the PET bottles fall through the gap between the fan-shaped plates 26 and 27 to achieve feeding.

[0026] A lever plate 13 is fixed to the side of the material cylinder 4 by bolts, and a rotating rod 25 that works in conjunction with the lever plate 13 is fixed to the side of the contact plate 29 by bolts. The actuating plate 13 is set to rotate with the material cylinder 4. When the actuating plate 13 rotates to contact the surface of the rotating rod 25, as the actuating plate 13 continues to rotate, the actuating plate 13 actuates the rotating rod 25. The actuated rotating rod 25 drives the contact plate 29, the rotating rod 24 and the sector plate 1 26 to rotate relative to the sector plate 27, so that the PET bottle is indirectly driven by the drive motor 21 and is discharged from the bottom of the torsion spring 28 for feeding. By controlling the amplitude and contact time of the toggle plate 13 on the rotating rod 25, the feeding rate of PET bottles and the amount of each feeding can be dynamically adjusted.

[0027] The bracket 8 has a support frame 2 welded to its side, and a controller 3 is installed on the side of the support frame 2; The controller 3 serves as the core of the entire device and can be a PLC or a microcontroller system. Operators can control the two actuators, the drive motor 21 and the electric telescopic rod 6, based on electrical signals. During the screening stage, the controller 3 controls the drive motor 21 to rotate forward and backward at a specific frequency and angle, causing the material cylinder 4 to oscillate back and forth. When feeding is required, it switches to a unidirectional rotation mode. At the same time, the controller independently controls the extension and retraction of the electric telescopic rod 6, causing the undulating blades 18 to move up and down to assist in screening. The controller can also change the workload by adjusting parameters such as motor speed and telescopic rod frequency.

[0028] Working principle: During the screening process, controller 3 first starts the drive motor 21, causing it to cycle in both directions according to a set frequency and angle. Drive shaft 19 rotates reciprocally, driving driven gear 11 via drive gear 10. While rotating, driven gear 11 also meshes with a fixed internal gear ring 16, causing hollow shaft 5, intermediate frame 12, and material cylinder 4 to oscillate reciprocally around the axis of the internal gear ring 16. The sponge pad at the bottom of material cylinder 4 oscillates back and forth on the screen 14 surface, causing the PET bottles inside to vibrate. Simultaneously, controller 3 controls... The electric telescopic rod 6 extends and retracts periodically, causing the connecting rod 7 and the moving blades 18 to move up and down inside the material cylinder 4, further agitating the PET bottles. This allows impurities such as fragments and bottle caps to pass through the screen 14 and fall into the collection cylinder 20 below. After screening is completed, the controller 3 controls the drive motor 21 to switch to a unidirectional continuous rotation mode, driving the material cylinder 4 and the actuating plate 13 on it to rotate. When the actuating plate 13 moves the rotating rod 25, it drives the rotating rod 24 and the second sector plate 27 to rotate. The screened PET bottles are then fed through the gap between the first sector plate 26 and the second sector plate 27.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A feeding device based on PET bottle recycling, comprising a base (1), characterized in that, A screen (14) is fixed to the inner wall of the through hole on the surface of the base (1). A bracket (8) is fixed to the outer wall of the top of the base (1). A placement component is installed on the gear transmission mechanism between the inner walls on both sides of the bracket (8). The placement component swings back and forth along the upper surface of the screen (14) under the transmission of the gear transmission mechanism. A feeding cylinder (23) is fixed to the inner wall of the through hole on the surface of the base (1) by embedding. A fan-shaped feeding mechanism is installed at the bottom of the feeding cylinder (23).

2. The feeding device based on PET bottle recycling according to claim 1, characterized in that, The gear transmission mechanism includes a limiting disk (15) and an internal gear ring (16) welded between the inner walls of both sides of the bracket (8). A turntable (17) is movably connected to the inner surface of the limiting disk (15). The gear transmission mechanism also includes a drive motor (21) fixed to the bottom outer wall of the base (1). A drive shaft (19) fixed at the output end of the drive motor (21) has a drive gear (10) fixed at the top. A driven gear (11) that meshes with the drive gear (10) and the internal gear ring (16) is connected to the outer circumference of the hollow shaft (5) by a key.

3. The feeding device based on PET bottle recycling according to claim 1, characterized in that, The placement assembly includes a hollow shaft (5), a material cylinder (4), and an intermediate frame (12). The hollow shaft (5) is movably connected to the inner wall of a through hole on the surface of the turntable (17). The intermediate frame (12) is welded to the bottom of the hollow shaft (5). The material cylinder (4) is fixed to the outer wall of the bottom of the intermediate frame (12), and a sponge pad is adhered to the bottom of the material cylinder (4).

4. The feeding device based on PET bottle recycling according to claim 1, characterized in that, The base (1) has a collection cylinder (20) fixed to its bottom outer wall, and the top of the collection cylinder (20) and the bottom of the screen (14) are directly opposite each other. The bottom of the collection cylinder (20) is threaded with a cover plate (22).

5. The feeding device based on PET bottle recycling according to claim 1, characterized in that, An electric telescopic rod (6) is fixed to the top outer wall of the bracket (8). A rotating plate (9) is rotated at the output end of the electric telescopic rod (6). A connecting rod (7) that is movably connected to the inner wall of the hollow shaft (5) is fixed to the bottom of the rotating plate (9). A moving blade (18) is fixed to the bottom of the connecting rod (7).

6. The feeding device based on PET bottle recycling according to claim 1, characterized in that, The fan-shaped feeding mechanism includes a fan-shaped plate (26), which is welded to the bottom of the feeding cylinder (23). A rotating rod (24) is movably connected to the inner wall of the through hole opened on the surface of the fan-shaped plate (26). A fan-shaped plate (27) is fixed to the outer wall of the circumference of the rotating rod (24).

7. A feeding device based on PET bottle recycling according to claim 6, characterized in that, The bottom of the rotating rod (24) is fixed with a contact plate (29), and a torsion spring (28) is sleeved on the outer circumference of the rotating rod (24). The two ends of the torsion spring (28) are respectively fixed to the bottom outer wall of the fan-shaped plate (26) and the top of the contact plate (29).

8. A feeding device based on PET bottle recycling according to claim 7, characterized in that, A toggle plate (13) is fixed to the side of the material cylinder (4), and a rotating rod (25) that works in conjunction with the toggle plate (13) is fixed to the side of the contact plate (29).

9. A feeding device based on PET bottle recycling according to claim 1, characterized in that, The support frame (2) is welded to the side of the bracket (8).

10. A feeding device based on PET bottle recycling according to claim 9, characterized in that, The support frame (2) has a controller (3) mounted on its side.

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