Grinding and washing device and recovery processing system for medical plastic infusion bottles

Abstract

The utility model relates to the technical field of recovery of medical supplies, in particular to a grinding and washing device and a recovery processing system of a medical plastic infusion bottle, the grinding and washing device comprises a first outer cylinder, a first inner cylinder and a stirring mechanism, a filtering cavity is formed between the first inner cylinder and the first outer cylinder, and the first inner cylinder is provided with filtering holes; a feeding port and a discharging port are formed in the two ends of the first outer cylinder correspondingly, the feeding port is used for feeding first crushed aggregates and an aqueous solution containing a surfactant into the first inner cylinder, the discharging port is used for discharging second crushed aggregates formed in the first inner cylinder through grinding and washing treatment, and a discharging port capable of being communicated with the filtering cavity is formed in the first outer cylinder; the stirring mechanism extends into the first inner cylinder and can stir a mixture of the first crushed aggregates and the aqueous solution containing the surfactant; by means of the abrasive cleaning device, the problem that label fragments are adhered to plastic fragments, and consequently separation is difficult is solved, it is guaranteed that single plastic with few impurities is obtained, and then high-value recovery of medical plastic infusion bottles is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical product recycling, in particular to a grinding and washing device and a recycling and processing system for medical plastic infusion bottles. Background Art

[0002] In the related technology, as plastic infusion bottles gradually become the mainstream of infusion packaging materials, a large number of waste plastic infusion bottles will inevitably be generated. Therefore, how to convert them into valuable industrial production raw materials, semi-finished products or finished products and solve the problem of recycling and utilization of plastic infusion bottles has important scientific significance and industrial application value.

[0003] Taking the polypropylene infusion bottle, which is currently in large use, as an example, the polypropylene infusion bottle usually includes a bottle body made of polypropylene, a bottle cap made of polyisoprene and a paper label. The paper label includes not only the bottle label on the polypropylene infusion bottle for reflecting the initial information such as the type and dosage of the drug, but also a secondary label pasted during later use for reflecting the name, gender, clinical department and other information of the patient receiving the drug; in order to protect privacy and facilitate recycling, the prior art usually crushes the polypropylene infusion bottle to form a mixture of plastic fragments and label fragments. How to completely peel off the label fragments pasted on the plastic fragments in batches to avoid the label fragments being mixed in the recycled plastic fragments so as to obtain single plastic fragments as much as possible is the key to achieving high-value recycling of polypropylene infusion bottles; in addition, for the sake of reducing costs, how to achieve large-scale and automated recycling of medical plastic infusion bottles is also a technical problem that technicians in this field are eager to solve. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the purpose of the utility model is to provide a grinding and washing device and a recycling and processing system for medical plastic infusion bottles.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the utility model provides a grinding and washing device for grinding and washing first crushed materials formed by crushing a medical plastic infusion bottle. The grinding and washing device includes a first outer cylinder, a first inner cylinder and a stirring mechanism. The first inner cylinder is arranged in the first outer cylinder and a filter cavity is formed between the first inner cylinder and the first outer cylinder. A filter hole is provided on the first inner cylinder for connecting the cylinder cavity of the first inner cylinder and the filter cavity. A feed port and a discharge port that can be connected to the first inner cylinder are respectively provided at both ends of the first outer cylinder. The feed port is used to feed the first crushed materials and the aqueous solution containing a surfactant into the first inner cylinder. The discharge port is used to discharge the second crushed materials formed in the first inner cylinder after grinding and washing. The first outer cylinder is provided with a discharge port that can be connected to the filter cavity. The stirring mechanism extends into the first inner cylinder and can stir the mixture of the first crushed materials and the aqueous solution containing a surfactant.

[0006] Optionally, the first inner cylinder is arranged to be inclined toward the position of the discharge port.

[0007] The second aspect of the utility model provides a recycling and processing system for medical plastic infusion bottles, comprising:

[0008] A crushing unit, wherein the crushing unit is used to crush the medical plastic infusion bottle to form a first crushed material;

[0009] a grinding and washing unit, the grinding and washing unit comprising the above-mentioned grinding and washing device, the grinding and washing unit being configured to perform grinding and washing treatment on the first crushed material from the crushing unit; and

[0010] A flotation separation unit is configured to separate light plastics from heavy plastics in the second crushed material from the grinding and washing unit.

[0011] Optionally, the crushing unit comprises a crushing cylinder having a crushing cavity, wherein a rotor assembly coaxially arranged with the crushing cylinder is provided in the crushing cavity, wherein the rotor assembly can be driven to rotate in the crushing cavity, and a first blade is provided on the rotor assembly so as to crush a medical plastic infusion bottle put into the crushing cavity during rotation;

[0012] A sieve plate is arranged on the wall of the crushing cylinder, and sieve holes are arranged on the sieve plate for screening out the medical plastic infusion bottle fragments which have been crushed in the crushing chamber and have a size smaller than the aperture of the sieve holes.

[0013] Optionally, a plurality of first blades are arranged on the rotor assembly, and a plurality of second blades are arranged on the inner wall of the crushing chamber, and the plurality of second blades correspond one-to-one to the plurality of first blades arranged on the rotor assembly and are respectively extended along the radial direction of the crushing barrel.

[0014] Optionally, a plurality of the crushing units are provided, and the plurality of the crushing units are sequentially connected to crush the medical plastic infusion bottle step by step to form the first crushed material; and / or

[0015] The flotation separation unit includes a flotation tank and a stirring blade. A feeding port and an overflow port are respectively provided at both ends of the flotation tank. The feeding port is used to receive the second crushed material transported from the grinding and washing unit. At least a portion of the stirring blade is higher than the liquid level of the flotation tank so that the plastic floating on the water surface can be pushed to the overflow port when rotating.

[0016] Optionally, a spiral pushing mechanism and a liquid discharge port are provided at the bottom of the flotation tank. The spiral pushing mechanism is adjacent to and spaced apart from the bottom of the flotation tank and can be driven to rotate around its own axis to push the material settled at the bottom of the tank to the liquid discharge port.

[0017] Optionally, the liquid discharge port is arranged at the center position of the flotation tank in the length direction, and the spiral pushing mechanism is provided with two and can push the material to the liquid discharge port from both ends of the flotation tank in the length direction respectively.

[0018] Optionally, the recycling system further comprises a storage unit, which is used to store the medical plastic infusion bottles to be recycled and can transport the medical plastic infusion bottles to the crushing unit through a transport mechanism; and / or

[0019] The recycling and processing system also includes a drying unit, which is used to receive the plastic sheets conveyed from the flotation separation unit and dry them.

[0020] Optionally, the spin-drying unit includes a second outer cylinder, a second inner cylinder and a driving mechanism, the second inner cylinder is coaxially arranged in the second outer cylinder, the outer circumferential surface of the second inner cylinder and the inner circumferential surface of the second outer cylinder define a drainage cavity, the bottom of the second outer cylinder is provided with a drainage port that can be connected to the drainage cavity, the second inner cylinder is provided with a drainage hole, and the driving mechanism is used to drive the second inner cylinder to rotate around its own axis to spin the moisture on the plastic sheet put into the second inner cylinder into the drainage cavity and discharge it through the drainage port.

[0021] Through the above technical scheme, when the first fragments formed by the crushing of the medical plastic infusion bottle are put into the first inner cylinder together with the aqueous solution containing a surfactant, the aqueous solution containing a surfactant can soften the label and the adhesive attached to the plastic fragments. With the collision and friction of the stirring mechanism, the label fragments and adhesive attached to the plastic fragments are peeled off and mixed in the aqueous solution containing a surfactant, filtered out into the filter cavity through the filter holes on the first inner cylinder, and then discharged through the discharge port. The second fragments containing only light and heavy plastics formed after grinding and washing are discharged through the discharge port.

[0022] The grinding and washing device provided by the utility model is used to grind and wash the first fragments formed by crushing the medical plastic infusion bottle, which effectively solves the problem of label fragments adhering to the plastic fragments and causing difficulty in separation, ensures that a single plastic with less impurities is obtained, and further realizes high-value recovery of medical plastic infusion bottles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a grinding and washing device provided by the utility model;

[0024] Figure 2 This is a structural schematic diagram of a recycling and processing system for medical plastic infusion bottles provided by the utility model;

[0025] Figure 3 It is a structural schematic diagram of a crushing unit provided by the utility model;

[0026] Figure 4 It is a structural schematic diagram of a flotation separation unit provided by the utility model;

[0027] Figure 5 The utility model is a structural schematic diagram of a spin-drying unit provided by the utility model.

[0028] Description of Reference Numerals

[0029] 10. Crushing unit; 11. Crushing cylinder; 111. Crushing chamber; 12. Rotor assembly; 121. First blade; 13. Second blade; 14. Screen plate; 141. Screen hole; 20. Grinding unit; 21. First outer cylinder; 211. Feed inlet; 212. Discharge outlet; 213. Discharge outlet; 22. First inner cylinder; 221. Filter hole; 23. Stirring mechanism; 24. Filter chamber; 30. Flotation separation unit; 31. Flotation tank; 311. Feed inlet; 312. Overflow outlet; 313. Drain outlet; 32. Stirring blade; 33. Screw push mechanism; 40. Drying unit; 41. Second outer cylinder; 411. Drain outlet; 42. Second inner cylinder; 421. Drain hole; 43. Driving mechanism; 44. Drain chamber; 50. Storage unit. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0031] like Figure 1 As shown, the first aspect of the utility model provides a grinding and washing device, which is used for grinding and washing first fragments formed by crushing medical plastic infusion bottles.

[0032] The grinding and washing device includes a first outer cylinder 21, a first inner cylinder 22 and a stirring mechanism 23. The first inner cylinder 22 is arranged in the first outer cylinder 21 and a filter cavity 24 is formed between the first inner cylinder 22 and the first outer cylinder 21. The first inner cylinder 22 is provided with a filter hole 221 for connecting the cylinder cavity of the first inner cylinder 22 and the filter cavity 24. Both ends of the first outer cylinder 21 are respectively provided with a feed port 211 and a discharge port 212 that can be connected to the first inner cylinder 22. The feed port 211 is used to put the first crushed material and the aqueous solution containing a surfactant into the first inner cylinder 22, and the discharge port 212 is used to discharge the second crushed material formed in the first inner cylinder 22 after grinding and washing. The first outer cylinder 21 is provided with a discharge port 213 that can be connected to the filter cavity 24. The stirring mechanism 23 extends into the first inner cylinder 22 and can stir the mixture of the first crushed material and the aqueous solution containing a surfactant.

[0033] According to the grinding and washing device provided by the utility model, when the first fragments formed by the crushing of the medical plastic infusion bottle are put into the first inner cylinder 22 together with the aqueous solution containing a surfactant, the aqueous solution containing a surfactant can soften the label and the adhesive attached to the plastic fragments, and with the collision and friction of the stirring mechanism 23, the label fragments and adhesive attached to the plastic fragments are peeled off and mixed in the aqueous solution containing a surfactant, filtered out into the filter cavity 24 through the filter holes 221 on the first inner cylinder 22, and then discharged through the discharge port 213. The second fragments containing only light and heavy plastics formed after the grinding and washing treatment are discharged through the discharge port 212.

[0034] The grinding and washing device provided by the utility model is used to grind and wash the first fragments formed by crushing the medical plastic infusion bottle, which effectively solves the problem of label fragments adhering to the plastic fragments and causing difficulty in separation, ensures that a single plastic with less impurities is obtained, and further realizes high-value recovery of medical plastic infusion bottles.

[0035] In the present invention, the role of the aqueous solution containing surfactant is to soften the label fragments and the adhesive between them and the plastic fragments, so that the label and the plastic can be completely separated when the stirring mechanism 23 collides and rubs the first fragments. It can be understood that the softened label fragments will be further crushed under the stirring of the stirring mechanism 23, mixed in the aqueous solution containing surfactant, and discharged from the grinding and washing device through the discharge port 213. By collecting this part of the aqueous solution containing surfactant and filtering the labels therein, the aqueous solution containing surfactant can be recycled, for example, it can be re-fed into the grinding and washing device.

[0036] In the present invention, the surfactant can be any appropriate type. For example, the surfactant is sodium dodecylbenzene sulfonate. In a specific embodiment of the present invention, the volume ratio of the sodium dodecylbenzene sulfonate to water is 1:100. The two are mixed to form a scrubbing liquid, which is put into a scrubbing device together with the first fragments for scrubbing treatment to completely destroy the label containing the patient information and achieve complete separation of the label fragments from the plastic fragments.

[0037] In the present invention, the stirring mechanism 23 can adopt any appropriate structural form, as long as it can fully stir the mixture of the first crushed material and the aqueous solution containing the surfactant in the first inner cylinder 22 to facilitate the thorough separation of the label fragments and the plastic fragments. Exemplarily, the stirring mechanism 23 includes a rotating shaft and long stirring paddles distributed on the rotating shaft, and the rotating shaft is driven by a variable frequency speed regulating motor and rotates around its own axis, driving the long stirring paddles to stir the mixture of the first crushed material and the aqueous solution containing the surfactant.

[0038] It is understandable that, in the present invention, the aperture of the filter hole 221 should be set to allow the crushed label to leak into the filter cavity 24 and prevent plastic fragments from leaking into the filter cavity 24 .

[0039] In some embodiments, the first inner cylinder 22 is arranged to be inclined toward the discharge port 212. With the above-mentioned structural arrangement, the first crushed material can stably move toward the discharge port 212 in the first inner cylinder 22.

[0040] The second aspect of the utility model provides a recycling and processing system for medical plastic infusion bottles, comprising a crushing unit 10, a grinding and washing unit 20 and a flotation separation unit 30, wherein the crushing unit 10 is used to crush the medical plastic infusion bottles to form a first crushed material; the grinding and washing unit 20 includes the above-mentioned grinding and washing device, and the grinding and washing unit 20 is configured to be able to grind and wash the first crushed material from the crushing unit 10; the flotation separation unit 30 is configured to be able to separate light and heavy plastics from the second crushed material from the grinding and washing unit 20.

[0041] According to the recycling and processing system provided by the utility model, the crushing unit 10 can tear up the bottle label containing patient information while crushing the medical plastic infusion bottle to form the first crushed material, and then the first crushed material is subjected to grinding and washing processing by the grinding and washing unit 20, so that the label fragments and adhesives adhering to the plastic fragments are completely peeled off, and then the second crushed material is separated into light plastic and heavy plastic by the flotation separation unit 30 to obtain light plastic and heavy plastic respectively. Therefore, the medical plastic infusion bottle is processed in sequence by the recycling and processing system including the crushing unit 10, the grinding and washing unit 20 and the flotation separation unit 30 provided by the utility model, so as to realize the batch-based full separation of the various components in the medical plastic infusion bottle, ensure the acquisition of waste plastic of a single component, and realize high-value recycling.

[0042] For example, in the recycling of medical plastic infusion bottles whose body material is polypropylene and whose cap material is polyisoprene, the light plastic finally recycled is polypropylene and the heavy plastic is polyisoprene. Among them, medical-grade polypropylene contains few impurities and is a high-quality recycled plastic. The recycling system provided by the utility model can ensure that a single plastic with few impurities is obtained, thereby ensuring the high-value recycling of polypropylene infusion bottles.

[0043] In the present invention, the function of the crushing unit 10 is to crush the medical plastic infusion bottles to be recycled. The present invention does not specifically limit the structural form of the crushing unit 10, as long as the medical plastic infusion bottles to be recycled can be crushed to obtain the first crushed material that meets the size requirements. It can be understood that meeting the size requirements here means that the plastic fragments will not pass through the filter holes 221 on the first inner cylinder 22 and enter the filter cavity 24. In addition, considering that the relatively small size is conducive to the separation of label fragments and plastic fragments, the plastic fragments in the first crushed material should be as small as possible without passing through the filter holes 221.

[0044] In some embodiments, in combination Figure 3 As shown, the crushing unit 10 includes a crushing barrel 11 having a crushing chamber 111, wherein a rotor assembly 12 coaxially arranged with the crushing barrel 11 is provided in the crushing chamber 111, wherein the rotor assembly 12 can be driven to rotate in the crushing chamber 111, and a first blade 121 is provided on the rotor assembly 12 so as to crush the medical plastic infusion bottle put into the crushing chamber 111 during rotation; a sieve plate 14 is provided on the barrel wall of the crushing barrel 11, and a sieve hole 141 is provided on the sieve plate 14 for screening out the medical plastic infusion bottle fragments in the crushing chamber 111 that have been crushed and have a size smaller than the aperture of the sieve hole 141.

[0045] It can be understood that, by arranging a sieve plate 14 with sieve holes 141 on the wall of the crushing cylinder 11, when the medical plastic infusion bottle is crushed to a size smaller than the aperture of the sieve hole 141, the medical plastic infusion bottle fragments can pass through the sieve hole 141 and leave the crushing cylinder 11, that is, through the above structure provided by the utility model, as long as the medical plastic infusion bottle is continuously put into the upper end opening of the crushing cylinder 11, the continuous crushing process of the medical plastic infusion bottle can be achieved; in addition, by replacing the sieve plate 14 to adjust the aperture of the sieve hole 141, the size of the first fragments can be controlled. Exemplarily, the aperture of the sieve hole 141 is 30 mm, that is, the medical plastic infusion bottle can pass through the sieve hole 141 and leave the crushing cylinder 11 when it is crushed to a size less than 30 mm.

[0046] In some embodiments, the screen plate 14 is detachably mounted on the wall of the crushing cylinder 11 , and the size of the first crushed material crushed by the crushing unit 10 can be controlled by replacing the screen plate 14 .

[0047] In the present invention, the rotor assembly 12 can be driven to rotate in the crushing chamber 111 by any appropriate structural form. Figure 3 As shown, the rotor assembly 12 is freely rotatably arranged in the crushing chamber 111, and a belt is sleeved on the end of the rotor assembly 12 extending out of the crushing chamber 111, and the variable frequency speed regulating motor drives the rotor assembly 12 to rotate continuously through the belt.

[0048] Furthermore, in order to improve the crushing efficiency of the rotor assembly 12 for medical plastic infusion bottles, a plurality of first blades 121 are provided on the rotor assembly 12, and a plurality of second blades 13 are provided on the inner wall of the crushing chamber 111. The plurality of second blades 13 correspond one-to-one to the plurality of first blades 121 provided on the rotor assembly 12 and are respectively extended along the radial direction of the crushing barrel 11.

[0049] It is understandable that the multiple first blades 121 provided on the rotor assembly 12 and the multiple second blades 13 on the inner wall of the crushing chamber 111 can form a strong shear field, which can continuously crush the medical plastic infusion bottle put into the crushing chamber 111.

[0050] In some embodiments, a plurality of the crushing units 10 are provided, and the plurality of the crushing units 10 are sequentially connected to crush the medical plastic infusion bottles step by step to form the first crushed materials.

[0051] It can be understood that by setting up multiple crushing units 10 to crush the medical plastic infusion bottle step by step, the burden of a single crushing unit 10 is reduced and the service life of the crushing unit 10 is extended. Exemplarily, the size of the first crushed material is required to be 20 mm. In a specific embodiment of the present invention, combined with Figure 2 As shown, two crushing units 10 are provided, the size of the sieve holes 141 of the sieve plate 14 in the first crushing unit 10 is 30 mm, and the size of the sieve holes 141 of the sieve plate 14 in the second crushing unit 10 is 20 mm.

[0052] In some embodiments, in combination Figure 4 As shown, the flotation separation unit 30 includes a flotation tank 31 and a stirring blade 32. A feed port 311 and an overflow port 312 are respectively provided at both ends of the flotation tank 31. The feed port 311 is used to receive the second crushed material transported from the grinding and washing unit 20. At least a portion of the stirring blade 32 is higher than the liquid level of the flotation tank 31 so that the plastic floating on the water surface can be pushed to the overflow port 312 when rotating.

[0053] In some embodiments, a spiral pushing mechanism 33 and a liquid discharge port 313 are provided at the bottom of the flotation tank 31. The spiral pushing mechanism 33 is adjacent to and spaced from the bottom of the flotation tank 31, and can be driven to rotate around its own axis to push the material settled at the bottom of the tank to the liquid discharge port 313. The material settled at the bottom of the tank is pushed to the liquid discharge port 313 and discharged through the continuous pushing of the spiral pushing mechanism 33.

[0054] In some embodiments, the liquid discharge port 313 is disposed at the center of the flotation tank 31 in the longitudinal direction, and two spiral pushing mechanisms 33 are provided and can push materials out of the liquid discharge port 313 from both ends of the flotation tank 31 in the longitudinal direction.

[0055] In the present invention, the spiral pushing mechanism 33 can be driven in any appropriate manner. For example, a motor is provided on the side of the flotation tank 31 , and the motor is drivingly connected to the spiral pushing mechanism 33 .

[0056] It should be noted that, in order to ensure that the plastic floating on the liquid surface of the flotation tank 31 can be continuously stirred by the stirring blades 32 and discharged through the overflow port 312, the flotation tank 31 is also provided with a water inlet pipe for replenishing water into the flotation tank 31, so as to avoid the problem that the liquid level drops after the water is discharged from the drain port 313, resulting in the plastic floating on the liquid surface of the flotation tank 31 being unable to be discharged through the overflow port 312.

[0057] In some embodiments, the recycling system further includes a storage unit 50 , which is used to store the medical plastic infusion bottles to be recycled and can transport the medical plastic infusion bottles to the crushing unit 10 through a transport mechanism.

[0058] In some embodiments, the recycling system further includes a drying unit 40, and the drying unit 40 is used to receive the plastic sheets conveyed from the flotation separation unit 30 and dry them.

[0059] In some embodiments, in combination Figure 5 As shown, the spin-drying unit 40 includes a second outer cylinder 41, a second inner cylinder 42 and a driving mechanism 43. The second inner cylinder 42 is coaxially arranged in the second outer cylinder 41. The outer circumferential surface of the second inner cylinder 42 and the inner circumferential surface of the second outer cylinder 41 define a drainage cavity 44. The bottom of the second outer cylinder 41 is provided with a drainage port 411 that can be connected to the drainage cavity 44. The second inner cylinder 42 is provided with a drainage hole 421. The driving mechanism 43 is used to drive the second inner cylinder 42 to rotate around its own axis so as to spin the moisture on the plastic sheet put into the second inner cylinder 42 into the drainage cavity 44 and discharge it through the drainage port 411.

[0060] like Figure 2 As shown, in a specific embodiment of the utility model, the storage unit 50, the crushing unit 10, the grinding unit 20, the flotation separation unit 30 and the drying unit 40 are arranged in sequence and connected together through a screw conveying mechanism, and the material obtained from the previous process can be directly transported to the next process for processing through the screw conveying mechanism, thereby ensuring the continuity of the recycling process, improving the efficiency of recycling, and then reflecting the scale effect. It can be understood that the screw conveying mechanism can adopt a common auger in the field, and the utility model will not be described in detail here.

[0061] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A grinding and washing device for grinding and washing first crushed materials formed by crushing medical plastic infusion bottles, characterized in that: The scrubbing device comprises a first outer cylinder (21), a first inner cylinder (22) and a stirring mechanism (23); the first inner cylinder (22) is arranged in the first outer cylinder (21) and a filtering cavity (24) is formed between the first inner cylinder (22) and the first outer cylinder (21); the first inner cylinder (22) is provided with a filtering hole (221) for connecting the cylinder cavity of the first inner cylinder (22) and the filtering cavity (24); both ends of the first outer cylinder (21) are respectively provided with a feeding port (211) which can be connected to the first inner cylinder (22); 1) and a discharge port (212), the feed port (211) being used to feed a first crushed material and an aqueous solution containing a surfactant into the first inner cylinder (22), the discharge port (212) being used to discharge a second crushed material formed in the first inner cylinder (22) after grinding and washing, the first outer cylinder (21) being provided with a discharge port (213) capable of communicating with the filter cavity (24), the stirring mechanism (23) extending into the first inner cylinder (22) and capable of stirring a mixture of the first crushed material and the aqueous solution containing a surfactant.

2. The scrubbing device according to claim 1, characterized in that: The first inner cylinder (22) is arranged to be inclined toward the position of the discharge port (212).

3. A recycling system for medical plastic infusion bottles, characterized in that: include: A crushing unit (10), the crushing unit (10) is used to crush a medical plastic infusion bottle to form a first crushed material; a grinding and washing unit (20), the grinding and washing unit (20) comprising the grinding and washing device according to claim 1 or 2, the grinding and washing unit (20) being configured to perform grinding and washing treatment on the first crushed material from the crushing unit (10); as well as A flotation separation unit (30) is configured to separate light plastics from heavy plastics in the second crushed material from the grinding and washing unit (20).

4. The recycling and processing system for medical plastic infusion bottles according to claim 3 is characterized in that: The crushing unit (10) comprises a crushing cylinder (11) having a crushing chamber (111), wherein a rotor assembly (12) coaxially arranged with the crushing cylinder (11) is arranged in the crushing chamber (111), wherein the rotor assembly (12) can be driven to rotate in the crushing chamber (111), and wherein a first blade (121) is arranged on the rotor assembly (12) so as to crush a medical plastic infusion bottle put into the crushing chamber (111) during rotation; A sieve plate (14) is provided on the wall of the crushing cylinder (11), and sieve holes (141) are provided on the sieve plate (14) for screening out medical plastic infusion bottle fragments that have been crushed and have a size smaller than the aperture of the sieve holes (141) in the crushing chamber (111).

5. The recycling and processing system for medical plastic infusion bottles according to claim 4, characterized in that: A plurality of first blades (121) are arranged on the rotor assembly (12), and a plurality of second blades (13) are arranged on the inner wall of the crushing chamber (111); the plurality of second blades (13) correspond one-to-one to the plurality of first blades (121) arranged on the rotor assembly (12) and are respectively extended along the radial direction of the crushing barrel (11).

6. The recycling and processing system for medical plastic infusion bottles according to claim 3, characterized in that: The crushing units (10) are provided in plurality, and the plurality of crushing units (10) are connected in sequence to crush the medical plastic infusion bottle step by step to form the first crushed material; and / or The flotation separation unit (30) comprises a flotation tank (31) and a stirring blade (32). A feeding port (311) and an overflow port (312) are respectively provided at two ends of the flotation tank (31). The feeding port (311) is used to receive the second crushed material transported from the grinding and washing unit (20). At least a portion of the stirring blade (32) is higher than the liquid level of the flotation tank (31) so that the plastic floating on the water surface can be pushed toward the overflow port (312) when rotating.

7. The recycling and processing system for medical plastic infusion bottles according to claim 6, characterized in that: A screw pushing mechanism (33) and a liquid discharge port (313) are provided at the bottom of the flotation tank (31). The screw pushing mechanism (33) is adjacent to and spaced from the bottom of the flotation tank (31) and can be driven to rotate around its own axis so as to push materials settled at the bottom of the tank to the liquid discharge port (313).

8. The recycling and processing system for medical plastic infusion bottles according to claim 7, characterized in that: The liquid discharge port (313) is arranged at the center position of the flotation tank (31) in the length direction, and two spiral pushing mechanisms (33) are arranged and can push materials out of the liquid discharge port (313) from both ends of the length direction of the flotation tank (31) respectively.

9. The recycling and processing system for medical plastic infusion bottles according to any one of claims 4 to 8, characterized in that: The recycling system further comprises a storage unit (50), wherein the storage unit (50) is used to store the medical plastic infusion bottles to be recycled and is capable of transporting the medical plastic infusion bottles to the crushing unit (10) through a transport mechanism; and / or The recycling and processing system further comprises a spin drying unit (40), wherein the spin drying unit (40) is used to receive the plastic flakes conveyed from the flotation separation unit (30) and spin dry them.

10. The recycling and processing system for medical plastic infusion bottles according to claim 9, characterized in that: The spin drying unit (40) comprises a second outer cylinder (41), a second inner cylinder (42) and a driving mechanism (43); the second inner cylinder (42) is coaxially arranged in the second outer cylinder (41); the outer circumferential surface of the second inner cylinder (42) and the inner circumferential surface of the second outer cylinder (41) define a drainage cavity (44); the bottom of the second outer cylinder (41) is provided with a drainage port (411) capable of communicating with the drainage cavity (44); the second inner cylinder (42) is provided with a drainage hole (421); the driving mechanism (43) is used to drive the second inner cylinder (42) to rotate around its own axis so as to spin the water on the plastic sheet put into the second inner cylinder (42) into the drainage cavity (44) and discharge it through the drainage port (411).

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