Plastic infusion bottle bag recycling pretreatment crushing device

Abstract

The application discloses a plastic infusion bottle bag recycling pretreatment crushing device and relates to the technical field of plastic infusion bottle bag recycling. The device comprises a mounting base, a crushing assembly arranged on the top of the mounting base, a mounting frame connected to the top of the mounting base, a feeding hopper connected to the top of the mounting frame, an extrusion frame connected to the mounting frame, two symmetrical extrusion plates arranged in the extrusion frame, and the extrusion plates can slide horizontally along the axis direction of the extrusion frame. The device extrudes and discharges the medicinal liquid through the extrusion plates, and the rubber plug is rubbed off by the forward and reverse rotation of the rubbing plate. The solid filter plate filters the rubber plug, realizes the effective separation of the medicinal liquid and the rubber plug, avoids the splashing and pollution of the equipment during the crushing of the medicinal liquid, prevents the mixing of the rubber debris and the plastic debris, solves the problem that the subsequent regeneration processing cannot be uniformly melted, and guarantees the quality of the regenerated plastic.

Description

Technical Field

[0001] This invention relates to the field of plastic infusion bottle and bag recycling technology, specifically to a pre-treatment crushing device for recycling plastic infusion bottles and bags. Background Technology

[0002] Plastic infusion bottles and bags are widely used consumables in the medical field. Their main materials include recyclable plastics such as polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC), which have high recycling value. With the development of the medical industry, a huge number of waste plastic infusion bottles and bags are generated every year. If they are discarded directly without proper treatment, it will lead to a waste of resources. Current recycling methods often involve crushing the plastic infusion bottles and bags and then melting them down.

[0003] A Chinese patent (publication number: CN119388631B) discloses a pre-treatment device for recycling plastic products, including a frame, crushing toothed rollers, a collection bin, a crushing bin, a first end cover, a second end cover, and a sliding mounting plate. A motor is mounted on the outer wall of the sliding mounting plate, and the output shaft of the motor is connected to crushing blades. A pushing assembly is located inside the crushing bin. In this invention, after the plastic products are initially crushed by the two crushing toothed rollers, they enter the collection bin, and the pushing assembly pushes the initially crushed plastic products toward the crushing blades for crushing. This further reduces the volume of the plastic products, thereby shortening the time required for heating and melting in the subsequent heating and melting process, improving the efficiency of plastic product recycling. In addition, the pushing assembly can compact the initially crushed plastic products, preventing the scattering of fragments during crushing by the crushing blades and thus avoiding poor crushing results.

[0004] During the operation of the aforementioned equipment, the plastic bottle is first crushed, and then a secondary crushing is performed using the set crushing blades to reduce the generation of large particles. However, during the crushing process, since there may be some residual medicine inside the plastic infusion bottle bag during use, if it is not treated in time and crushed directly, the medicine will splash and leak during the crushing process, contaminating the crushing equipment. Secondly, the bottle mouth of the plastic infusion bottle bag is often sealed with a rubber stopper. If it is not separated, the rubber fragments will mix with the plastic fragments after crushing, making it impossible to melt evenly during subsequent recycling processing.

[0005] To address this issue, we designed a pre-treatment and crushing device for recycling plastic infusion bottles and bags. Summary of the Invention

[0006] The purpose of this invention is to provide a plastic infusion bottle bag recycling pretreatment and crushing device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides a plastic infusion bottle bag recycling pretreatment crushing device, including a mounting base and a crushing component disposed on the top of the mounting base. A mounting frame is connected to the top of the mounting base, and a feeding hopper is connected to the top of the mounting frame. A squeezing frame is connected inside the mounting frame, and two symmetrical squeezing plates are disposed within the squeezing frame. The squeezing plates can slide horizontally along the axis of the squeezing frame. Two symmetrical telescopic cylinders are connected to the mounting frame, and the telescopic ends of the telescopic cylinders are used to drive the squeezing plates to slide horizontally. At least five kneading plates are rotatably connected to one side of the squeezing plates, and the opposite sides of two kneading plates are arranged in a wave-like pattern. The relative movement of the two squeezing plates can squeeze the bottle bag, and the rotation of the two kneading plates can knead the bottle bag. A driving component for driving the kneading plates to rotate is disposed on one side of the squeezing plate.

[0008] Furthermore, the drive assembly includes a drive gear rotatably connected within the extrusion plate, the drive gear and the central axis of the extrusion plate being coincident, the drive gear being coaxially arranged with one of the kneading plates, and multiple driven gears meshing on the drive gear, the multiple driven gears being distributed in a circumferential array at equal intervals with the center of the drive gear as the center.

[0009] Furthermore, the drive assembly also includes a drive gear coaxially arranged with the drive gear. A gear ring frame is rotatably connected to the side of the extrusion plate away from the kneading plate. Multiple gear teeth are integrally formed inside the gear ring frame, and the gear teeth occupy at least half of the inner circumference of the gear ring frame. A missing gear is meshed with one side of the drive gear. The missing gear is connected inside the gear ring frame and rotates synchronously with the gear ring frame. The gear teeth integrally formed on the outer surface of the missing gear occupy at least half of the outer circumference of the missing gear. When the gear ring frame rotates, the gear teeth integrally formed inside the gear ring frame and the gear teeth integrally formed on the outer surface of the missing gear can intermittently mesh with the drive gear, driving the drive gear to rotate intermittently clockwise and counterclockwise.

[0010] Furthermore, a synchronous pulley is rotatably connected to the side of the extrusion plate away from the kneading plate, and a synchronous belt is connected between the synchronous pulley and the toothed ring frame. A first servo motor that drives the synchronous pulley to rotate is connected to the extrusion plate.

[0011] Furthermore, the telescopic cylinder has a mounting plate connected to its telescopic end, a damper connected to the mounting plate, and the other end of the damper connected to one side of the extrusion plate. A buffer spring is fitted onto the damper, with one end of the buffer spring connected to the mounting plate and the other end connected to the extrusion plate.

[0012] Furthermore, a liquid filter plate is connected inside the squeezing frame. The liquid filter plate is arranged in an inverted "V" shape. A liquid storage box is connected to the bottom of the squeezing frame. The liquid storage box is located below the liquid filter plate and is used to recover the liquid medicine.

[0013] Furthermore, both sides of the liquid storage box are rotatably connected to electric telescopic rods, and the telescopic ends of the electric telescopic rods are rotatably connected to sealing plates. The sealing plates are hinged to the bottom of the extrusion frame, and the bottom of the extrusion frame has a discharge port. The sealing plates are used to seal the discharge port.

[0014] Furthermore, the crushing assembly includes a crushing frame connected to the top of the mounting base, two symmetrical crushing rollers rotatably connected inside the crushing frame, and the two crushing rollers rotate in opposite directions. A drive motor for driving the crushing rollers to rotate is provided on the top of the mounting base.

[0015] Furthermore, a solid filter plate is vertically slidably disposed inside the mounting base. The solid filter plate is located below the liquid storage box and is used to filter the bottle stopper. A discharge port is opened on one side of the mounting frame, and the position of the discharge port corresponds to the top of the crushing frame.

[0016] Furthermore, the bottom of the solid filter plate is connected to two sets of symmetrical reset springs, and an abutment plate is rotatably connected inside the mounting frame. The abutment plate is located above the solid filter plate, and a second servo motor that drives the abutment plate to rotate is connected to the rear side of the mounting frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The liquid medicine is squeezed out by the extrusion plate, and the rubber stopper is rubbed off by the kneading plate in alternating forward and reverse directions. The solid filter plate filters the rubber stopper, achieving effective separation of the liquid medicine and the rubber stopper. This avoids the liquid medicine splashing and contaminating the equipment during crushing, prevents rubber fragments from mixing with plastic fragments, solves the problem of uneven melting during subsequent recycling processing, and ensures the quality of recycled plastics.

[0018] 2. During compression, the damper and buffer spring absorb the impact force and suppress rebound, preventing the bottle / bag from rupturing and splashing due to instantaneous compression. The solid filter plate vibrates under the action of the contact plate and return spring to prevent the rubber stopper from clogging. The sealing plate controls the opening and closing of the discharge port.

[0019] 3. An inverted "V"-shaped liquid filter plate collects the liquid medicine and directs it into a storage box, enabling centralized recovery of the medicine. An abutment plate allows for intermittent feeding, ensuring the material enters the crushing frame in an orderly manner and is crushed by the crushing rollers. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the overall external structure of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a side view of the two extrusion plates in this invention; Figure 5 This is a cross-sectional view of the extrusion plate in this invention; Figure 6 This is a front view of the extrusion plate in this invention; Figure 7 For the present invention Figure 3 Enlarged view of point A in the middle.

[0021] In the diagram: 1. Mounting base; 2. Crushing frame; 3. Crushing roller; 4. Drive motor; 5. Mounting frame; 6. Extrusion frame; 7. Extrusion plate; 8. Kneading plate; 9. Telescopic cylinder; 10. Mounting plate; 11. Drive gear; 12. Driven gear; 13. Drive gear; 14. Gear ring frame; 15. Missing gear; 16. First servo motor; 17. Synchronous pulley; 18. Synchronous belt; 19. Damper; 20. Buffer spring; 21. Liquid storage box; 22. Liquid filter plate; 23. Electric telescopic rod; 24. Sealing plate; 25. Solid filter plate; 26. Contact plate; 27. Return spring; 28. Second servo motor; 29. ​​Feed hopper. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-7 This invention provides a technical solution: a plastic infusion bottle bag recycling pretreatment crushing device, including a mounting base 1 and a crushing component disposed on the top of the mounting base 1. A mounting frame 5 is connected to the top of the mounting base 1, and a feed hopper 29 is connected to the top of the mounting frame 5. A squeezing frame 6 is connected inside the mounting frame 5, and two symmetrical squeezing plates 7 are disposed inside the squeezing frame 6. The squeezing plates 7 can slide horizontally along the axis of the squeezing frame 6. Two symmetrical telescopic cylinders 9 are connected to the mounting frame 5. The telescopic ends of the telescopic cylinders 9 are used to drive the squeezing plates 7 to slide horizontally. At least five kneading plates 8 are rotatably connected to one side of the squeezing plates 7. The opposite sides of the two kneading plates 8 are arranged in a wave-like shape. The relative movement of the two squeezing plates 7 can squeeze the bottle bag, and the rotation of the two kneading plates 8 can knead the bottle bag. A driving component for driving the kneading plates 8 to rotate is disposed on one side of the squeezing plates 7.

[0024] In practice, after the plastic infusion bottle bag enters the extrusion frame 6 through the feed hopper 29, the telescopic cylinder 9 on the mounting frame 5 drives the two extrusion plates 7 to move relative to each other in the horizontal direction, extruding the bottle bag and forcing the residual medicine inside to be squeezed out. At the same time, at least five kneading plates 8 rotatably connected to one side of the extrusion plate 7 rotate synchronously under the action of the drive component, using the wave-shaped contact surface to knead the bottle bag, so that the rubber stopper at the bottle mouth is separated from the plastic body. In this setting, the extrusion action of the extrusion plate 7 can directly discharge the medicine, avoiding splashing of medicine and contaminating the equipment when the bottle is broken. The wave-shaped structure of the kneading plate 8, compared with the flat design, can form continuous alternating engagement and release during the kneading process. The protruding part is embedded in the gap between the bottle bag and the rubber stopper, and the concave part accommodates the deformed plastic material. The differential friction force accelerates the separation of the rubber stopper from the bottle body, efficiently separating the rubber stopper and preventing uneven melting in the later stage.

[0025] See Figure 1-7 The drive assembly includes a drive gear 11 rotatably connected within the extrusion plate 7. The drive gear 11 and the central axis of the extrusion plate 7 coincide. The drive gear 11 is coaxially arranged with one of the kneading plates 8. Multiple driven gears 12 are meshed on the drive gear 11. The multiple driven gears 12 are distributed in a circumferential array with equal spacing around the center of the drive gear 11.

[0026] In practice, the drive gear 11 inside the extrusion plate 7 rotates coaxially with one of the kneading plates 8. The multiple driven gears 12 meshing with the drive gear 11 are arranged in a circumferential array, driving the remaining kneading plates 8 to rotate synchronously, ensuring that the rotation speed of each kneading plate 8 is the same, and generating kneading force together.

[0027] See Figure 1-7 The drive assembly also includes a drive gear 13 coaxially arranged with the drive gear 11. A gear ring frame 14 is rotatably connected to the side of the extrusion plate 7 away from the kneading plate 8. Multiple gear teeth are integrally formed inside the gear ring frame 14, and the gear teeth occupy at least half of the inner circumference of the gear ring frame 14. A missing gear 15 is meshed with one side of the drive gear 13. The missing gear 15 is connected inside the gear ring frame 14 and rotates synchronously with the gear ring frame 14. The gear teeth integrally formed on the outer surface of the missing gear 15 occupy at least half of the outer circumference of the missing gear 15. When the gear ring frame 14 rotates, the integrally formed gear teeth inside the gear ring frame 14 and the integrally formed gear teeth on the outer surface of the missing gear 15 can intermittently mesh with the drive gear 13, driving the drive gear 13 to rotate intermittently clockwise and counterclockwise.

[0028] In practice, when the toothed ring frame 14 rotates, its internal gear teeth and the teeth of the missing gear 15 alternately mesh with the drive gear 13. The drive gear 13 drives the active gear 11 to rotate intermittently clockwise and counterclockwise, causing the kneading plate 8 to produce alternating forward and reverse movements. Compared with unidirectional rotation, this setting can produce a twisting effect by alternating forward and reverse kneading, making it easier to peel off the tightly fitted rubber stopper, while avoiding plastic fragments from being mixed into the medicine due to excessive wear of the bottle bag.

[0029] See Figure 1-7 A synchronous wheel 17 is rotatably connected to the side of the extrusion plate 7 away from the kneading plate 8. A synchronous belt 18 is connected between the synchronous wheel 17 and the toothed ring frame 14. A first servo motor 16 is connected to the extrusion plate 7 to drive the synchronous wheel 17 to rotate.

[0030] It should be noted that the first servo motors 16 on both sides rotate in opposite directions.

[0031] In practice, the first servo motor 16 drives the synchronous wheel 17 to rotate, which in turn drives the toothed ring frame 14 to rotate via the synchronous belt 18. The first servo motors 16 on both sides rotate in opposite directions, so that the kneading plates 8 of the two extrusion plates 7 form a reverse kneading force. The shearing force generated by the reverse kneading in this setting further enhances the separation effect between the rubber stopper and the bottle.

[0032] See Figure 1-7 The telescopic cylinder 9 is connected to a mounting plate 10 at its telescopic end. A damper 19 is connected to the mounting plate 10. The other end of the damper 19 is connected to one side of the extrusion plate 7. A buffer spring 20 is sleeved on the damper 19. One end of the buffer spring 20 is connected to the mounting plate 10, and the other end is connected to the extrusion plate 7.

[0033] In practice, the telescopic cylinder 9 is connected to the damper 19 and the buffer spring 20 via the mounting plate 10, and then drives the extrusion plate 7. During the extrusion process, the buffer spring 20 absorbs the instantaneous impact force, and the damper 19 suppresses the rebound, thus avoiding bottle / bag rupture and splashing caused by instantaneous extrusion and further reducing drug residue.

[0034] See Figure 1-7 A liquid filter plate 22 is connected inside the squeezing frame 6. The liquid filter plate 22 is set in an inverted "V" shape. A liquid storage box 21 is connected to the bottom of the squeezing frame 6. The liquid storage box 21 is located below the liquid filter plate 22 and is used to recover the liquid medicine.

[0035] In practice, the inverted "V"-shaped liquid filter plate 22 inside the extrusion frame 6 receives the extruded liquid medicine and flows into the lower storage box 21 through the filter holes, so as to achieve centralized recovery of the liquid medicine.

[0036] See Figure 1-7Both sides of the liquid storage box 21 are rotatably connected to electric telescopic rods 23. The telescopic ends of the electric telescopic rods 23 are rotatably connected to sealing plates 24. The sealing plates 24 are hinged to the bottom of the extrusion frame 6. The bottom of the extrusion frame 6 has a discharge port. The sealing plates 24 are used to seal the discharge port.

[0037] In practice, the electric telescopic rod 23 extends and retracts, driving the sealing plate 24 to rotate, controlling the opening and closing of the discharge port at the bottom of the squeezing frame 6. After the liquid medicine is discharged, the sealing plate 24 opens, releasing the pretreated bottle bag.

[0038] See Figure 1-7 The crushing assembly includes a crushing frame 2 connected to the top of the mounting base 1, two symmetrical crushing rollers 3 rotatably connected inside the crushing frame 2, and the two crushing rollers 3 rotate in opposite directions. A drive motor 4 for driving the crushing rollers 3 to rotate is provided on the top of the mounting base 1.

[0039] In practice, the pre-treated bottle bag enters the crushing frame 2, and the drive motor 4 drives two crushing rollers 3 that rotate in opposite directions to crush it and break it into smaller pieces.

[0040] See Figure 1-7 A solid filter plate 25 is vertically slidably installed inside the mounting base 1. The solid filter plate 25 is located below the liquid storage box 21 and is used to filter the bottle stopper. A discharge port is opened on one side of the mounting frame 5, and the position of the discharge port corresponds to the top of the crushing frame 2.

[0041] In practice, the solid filter plate 25 is located below the liquid storage box 21, receiving the material discharged from the extrusion frame 6, separating the plastic bottle bag from the rubber stopper, and the plastic bottle bag enters the crushing frame 2 through the discharge port for crushing.

[0042] See Figure 1-7 Two sets of symmetrical reset springs 27 are connected to the bottom of the solid filter plate 25. An abutment plate 26 is rotatably connected inside the mounting frame 5. The abutment plate 26 is located above the solid filter plate 25. A second servo motor 28 that drives the abutment plate 26 to rotate is connected to the rear side of the mounting frame 5.

[0043] In practice, the second servo motor 28 drives the contact plate 26 to rotate, intermittently contacting the solid filter plate 25, causing the solid filter plate 25 to compress the return spring 27 and then rebound and vibrate, thereby preventing the bottle stopper from clogging the solid filter plate 25. The contact plate 26 is located above the solid filter plate 25. When the contact plate 26 rotates under the drive of the second servo motor 28, it will temporarily block the material on the solid filter plate 25 from flowing downward when it rotates to contact the surface of the solid filter plate 25. When the contact plate 26 rotates away from the solid filter plate 25, the pressure is released, and the material falls under its own gravity and the vibration of the solid filter plate 25, realizing intermittent feeding.

[0044] Working principle: The plastic infusion bottle bag to be processed enters the extrusion frame 6 inside the mounting frame 5 through the feed hopper 29. The two telescopic cylinders 9 start working, and their telescopic ends drive the two mutually symmetrical extrusion plates 7 inside the extrusion frame 6 to slide horizontally relative to each other along the axis of the extrusion frame 6. During the movement of the extrusion plates 7, the first servo motor 16 connected to the extrusion plates 7 drives the synchronous wheel 17 to rotate. The synchronous wheel 17 drives the toothed ring frame 14 to rotate through the synchronous belt 18, and the first servo motors 16 on both sides rotate in opposite directions. The toothed ring frame 14 has integrally formed gear teeth. The teeth of the gear 15, which is integrally formed on the outer surface of the gear 15 connected in the gear ring frame 14, intermittently mesh with the drive gear 13. The drive gear 13 is coaxially arranged with the active gear 11, thereby driving the active gear 11 to rotate intermittently clockwise and counterclockwise. The active gear 11 is coaxially arranged with one of the rubbing plates 8, and multiple driven gears 12 meshing on the active gear 11 are distributed at equal intervals in a circular array with their center as the center, driving the other rubbing plates 8 to rotate synchronously, realizing the alternating forward and reverse rubbing action of the rubbing plates 8 to rub off the rubber stopper at the bottle mouth. During the squeezing and kneading process, the telescopic cylinder 9 drives the squeezing plate 7 through the damper 19 connected to the mounting plate 10 and the buffer spring 20 sleeved on the damper 19. The buffer spring 20 absorbs the instantaneous impact force, and the damper 19 suppresses the rebound, preventing the bottle bag from breaking and splashing due to instantaneous squeezing. The squeezed medicine falls on the liquid filter plate 22, which is set in an inverted "V" shape, connected inside the squeezing frame 6. After being filtered by the liquid filter plate 22, it flows into the liquid storage box 21 connected to the bottom of the squeezing frame 6, realizing the centralized recovery of the medicine. After the liquid medicine is discharged, the electric telescopic rods 23 connected to both sides of the liquid storage box 21 extend and retract. The telescopic ends drive the sealing plate 24 hinged to the bottom of the squeezing frame 6 to rotate, opening the discharge port at the bottom of the squeezing frame 6. The pre-treated bottle bag falls onto the solid filter plate 25 that is vertically slidably set inside the mounting base 1. The solid filter plate 25 is located below the liquid storage box 21 and is used to filter the rubber stopper that has been rubbed off on the bottle bag. Subsequently, the second servo motor 28 connected to the rear side of the mounting frame 5 drives the abutment plate 26 rotatably connected inside the mounting frame 5 to rotate. The abutment plate 26 is located above the solid filter plate 25. When it rotates, it intermittently abuts the solid filter plate 25, causing the solid filter plate 25 to compress the two sets of symmetrical reset springs 27 connected to the bottom and then rebound and vibrate, so as to prevent the rubber plug from clogging the solid filter plate 25. At the same time, when the abutment plate 26 rotates to contact the surface of the solid filter plate 25, it temporarily blocks the material from flowing downward. When it rotates away, the material enters the crushing frame 2 connected to the top of the mounting base 1 through the discharge port opened on one side of the mounting frame 5, which is corresponding to the top of the crushing frame 2, under its own gravity and the vibration of the solid filter plate 25. Finally, the drive motor 4 installed on the top of the mounting base 1 drives the two symmetrical and oppositely rotating crushing rollers 3 inside the crushing frame 2 to rotate, crushing the plastic bottles and bags that have entered the crushing frame 2, thus completing the entire recycling pretreatment crushing process.

Claims

1. A pre-treatment crushing device for recycling plastic infusion bottles and bags, comprising a mounting base (1) and a crushing assembly disposed on top of the mounting base (1), characterized in that, The mounting base (1) is connected to a mounting frame (5) at its top, and a feed hopper (29) is connected to the top of the mounting frame (5). An extrusion frame (6) is connected inside the mounting frame (5), and two symmetrical extrusion plates (7) are arranged inside the extrusion frame (6). The extrusion plates (7) can slide horizontally along the axis of the extrusion frame (6). Two symmetrical telescopic cylinders (9) are connected to the mounting frame (5). The telescopic ends of the telescopic cylinders (9) are used to drive the extrusion plates (7) to slide horizontally. At least five kneading plates (8) are rotatably connected to one side of the extrusion plates (7). The opposite sides of two kneading plates (8) are arranged in a wave-like pattern. The two extrusion plates (7) can extrude the bottle bag by moving relative to each other, and the two kneading plates (8) can knead the bottle bag by rotating. A drive assembly for driving the kneading plates (8) to rotate is provided on one side of the extrusion plate (7). The squeezing frame (6) is connected to a liquid filter plate (22), which is arranged in an inverted "V" shape. The bottom of the squeezing frame (6) is connected to a liquid storage box (21), which is located below the liquid filter plate (22) and is used to recover the liquid medicine. Both sides of the liquid storage box (21) are rotatably connected to electric telescopic rods (23), and the telescopic ends of the electric telescopic rods (23) are rotatably connected to sealing plates (24). The sealing plates (24) are hinged to the bottom of the extrusion frame (6), and the bottom of the extrusion frame (6) is provided with a discharge port. The sealing plates (24) are used to seal the discharge port. A solid filter plate (25) is vertically slidably arranged inside the mounting base (1). The solid filter plate (25) is located below the liquid storage box (21) and is used to filter the bottle stopper. A discharge port is opened on one side of the mounting frame (5), and the position of the discharge port corresponds to the top of the crushing frame (2).

2. The plastic infusion bottle bag recycling pretreatment and crushing device as described in claim 1, characterized in that: The drive assembly includes a drive gear (11) rotatably connected within the extrusion plate (7), the drive gear (11) and the central axis of the extrusion plate (7) coincide with each other, the drive gear (11) is coaxially arranged with one of the kneading plates (8), and a plurality of driven gears (12) are meshed on the drive gear (11), the plurality of driven gears (12) are distributed in a circumferential array with the center of the drive gear (11) as the center and at equal intervals.

3. The plastic infusion bottle bag recycling pretreatment and crushing device as described in claim 2, characterized in that: The drive assembly further includes a drive gear (13) coaxially arranged with the drive gear (11). A gear ring frame (14) is rotatably connected to the side of the extrusion plate (7) away from the kneading plate (8). Multiple gear teeth are integrally formed inside the gear ring frame (14), and the gear teeth occupy at least half of the inner circumference of the gear ring frame (14). A missing gear (15) is meshed with one side of the drive gear (13). The missing gear (15) is connected inside the gear ring frame (14) and rotates synchronously with the gear ring frame (14). The gear teeth integrally formed on the outer surface of the missing gear (15) occupy at least half of the outer circumference of the missing gear (15). When the gear ring frame (14) rotates, the integrally formed gear teeth inside the gear ring frame (14) and the integrally formed gear teeth on the outer surface of the missing gear (15) can intermittently mesh with the drive gear (13), driving the drive gear (13) to rotate intermittently clockwise and counterclockwise.

4. The plastic infusion bottle bag recycling pretreatment and crushing device as described in claim 3, characterized in that: The side of the extrusion plate (7) away from the kneading plate (8) is rotatably connected to a synchronous wheel (17), and a synchronous belt (18) is connected between the synchronous wheel (17) and the toothed ring frame (14). A first servo motor (16) that drives the synchronous wheel (17) to rotate is connected to the extrusion plate (7).

5. The plastic infusion bottle bag recycling pretreatment and crushing device as described in claim 1, characterized in that: The telescopic cylinder (9) is connected to a mounting plate (10) at its telescopic end. A damper (19) is connected to the mounting plate (10). The other end of the damper (19) is connected to one side of the extrusion plate (7). A buffer spring (20) is sleeved on the damper (19). One end of the buffer spring (20) is connected to the mounting plate (10), and the other end is connected to the extrusion plate (7).

6. The plastic infusion bottle bag recycling pretreatment and crushing device as described in claim 1, characterized in that: The crushing assembly includes a crushing frame (2) connected to the top of the mounting base (1), two symmetrical crushing rollers (3) are rotatably connected inside the crushing frame (2), and the two crushing rollers (3) rotate in opposite directions. A drive motor (4) for driving the crushing rollers (3) to rotate is provided on the top of the mounting base (1).

7. The plastic infusion bottle bag recycling pretreatment and crushing device as described in claim 1, characterized in that: The bottom of the solid filter plate (25) is connected to two sets of symmetrical reset springs (27). The mounting frame (5) is rotatably connected to a contact plate (26). The contact plate (26) is located above the solid filter plate (25). The rear side of the mounting frame (5) is connected to a second servo motor (28) that drives the contact plate (26) to rotate.

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