A waste plastic recycling and utilization integrated device
By installing a screening plate and agitation components inside the washing drum, simultaneous washing and screening of waste plastics is achieved, solving the problem of low efficiency in existing technologies and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZUNYI HUAQING PLASTIC PROD CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, the washing and screening of waste plastics cannot be carried out simultaneously, resulting in low production efficiency.
Design an integrated equipment for recycling waste plastics, which uses a screening plate and a mixing component inside the washing cylinder. The mixing component causes the waste plastics to be stirred in layers inside the washing cylinder, and the filter holes of the screening plate and the water flow are used to clean the dirt, so that screening and washing can be carried out simultaneously.
This technology enables the simultaneous washing and screening of waste plastics, significantly improving production efficiency and shortening processing time.
Smart Images

Figure CN224527697U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste plastic recycling technology, and in particular to an integrated equipment for the recycling of waste plastics. Background Technology
[0002] Resource recycling is an important part of environmental protection, and waste plastics can be recycled through crushing. The process of recycling and reusing plastics requires steps such as crushing, washing, removing impurities, and screening.
[0003] Existing technology, such as the plastic screening and separation equipment and screening method for waste plastic recycling disclosed in CN119704453A, includes a separation chamber with two material distribution channels fixedly installed on it. A screening cylinder and a drive source are installed on the separation chamber. A front adjustment component and a rear adjustment component are respectively provided at both ends of the screening cylinder. A drive component is provided at both ends of the screening cylinder. A control component is provided on one side of the separation chamber. A linkage component is provided between the drive component and the control component. The screening cylinder includes multiple baffle rods and baffle screens. The drive component includes a drive rod.
[0004] However, existing technologies can only screen the crushed waste plastics separately and cannot do so simultaneously with the washing process. Separate screening and washing require more time and are less efficient than simultaneous washing and screening. Summary of the Invention
[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as lower production efficiency when washing and screening are performed simultaneously, by proposing an integrated waste plastic recycling equipment.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] Design an integrated device for recycling waste plastics, including a washing cylinder, wherein the inside of the washing cylinder is equipped with several screening plates for screening waste plastics, and the filter holes on the screening plates decrease in size from top to bottom.
[0008] The screening plate divides the washing cylinder into several layers, and the inside of the washing cylinder is equipped with a stirring component that stirs each layer of waste plastic separately.
[0009] The outer wall of the washing cylinder is equipped with a collection component for collecting each layer of waste plastic separately.
[0010] Furthermore, the stirring assembly includes a motor fixedly installed at the bottom of the washing cylinder and a stirring shaft rotatably installed inside the washing cylinder. The output shaft of the motor passes through the washing cylinder and is fixedly connected to the stirring shaft. Several sets of stirring rods are fixedly provided on the outer wall of the stirring shaft, and each set of stirring rods is arranged in a circumferential array and rotated on the upper surface of the screening plate.
[0011] Furthermore, the stirring shaft is composed of several short shafts, and the lower end of the lowest short shaft is fixedly connected to the output shaft of the motor. The upper end of each short shaft is integrally formed with a threaded column, and the upper end of the threaded column is threadedly connected to the adjacent short shaft above. A sieve plate is sleeved on the outer wall of the threaded column, and two adjacent short shafts are clamped on both sides of the sieve plate. A limiting protrusion is integrally formed on the inner wall of the washing cylinder, and a groove is opened on the outer wall of the sieve plate, and the limiting protrusion is slidably arranged in the groove.
[0012] Furthermore, the collection assembly includes several through holes opened on the outer wall of the washing cylinder and a discharge port fixed in the through holes. The lower inner walls of the discharge ports are flush with the upper surface of the several screening plates. A collection trough is installed at the bottom of the discharge port through a recycling assembly, and a filter screen is fixed inside the lower end of the collection trough. A valve is installed inside the discharge port.
[0013] Furthermore, the recycling assembly includes a recycling tank fixed at the bottom of each discharge port and a water pump fixed at the bottom of the lowest recycling tank, and the recycling tanks are connected by pipes. The recycling tanks are inserted into a collection tank. The water inlet of the water pump passes through and extends into the lowest recycling tank. The water outlet of the water pump is fixedly connected to a return pipe, and the upper end of the return pipe extends to the upper end of the cleaning cylinder.
[0014] Furthermore, the right end face of the recycling tank is provided with an upper insertion hole, and a receiving collection tank is inserted into the insertion hole. A retaining ring is fixed on the upper outer wall of the collection tank, and the bottom of the retaining ring abuts against the recycling tank.
[0015] The present invention proposes an integrated waste plastic recycling equipment, which has the following advantages: by setting up screening plates to divide the washing cylinder into layers and stirring components to stir each layer, the stirring causes the waste plastics to rub against each other, and the friction and water flow remove dirt from the waste plastics. At the same time, the waste plastics that can pass through the filter holes fall to the next layer, so that the waste plastics fall from large to small onto the screening plates and the bottom of the washing cylinder from top to bottom, thus completing the washing and screening of waste plastics at the same time, effectively reducing processing time and improving production efficiency. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;
[0018] Figure 3 This is a schematic diagram of the threaded column structure of this utility model;
[0019] Figure 4This is the right view of the present invention.
[0020] In the diagram: 1. Washing cylinder; 2. Screening plate; 3. Filter hole; 4. Stirring assembly; 41. Motor; 42. Stirring shaft; 421. Short shaft; 422. Threaded column; 423. Limiting protrusion; 43. Stirring rod; 5. Collection assembly; 51. Discharge port; 52. Valve; 53. Collection tank; 54. Filter screen; 6. Recycling assembly; 61. Recycling tank; 62. Water pump; 63. Pipeline; 64. Return pipe; 7. Insertion hole; 8. Retaining ring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Reference Figure 1-4 As an embodiment of this utility model, it discloses an integrated equipment for recycling waste plastics, including a washing cylinder 1. The washing cylinder 1 is equipped with a plurality of screening plates 2 for screening waste plastics, and the filter holes 3 on the plurality of screening plates 2 decrease in size from top to bottom.
[0023] The screening plate 2 divides the washing cylinder 1 into several layers, and the washing cylinder 1 is equipped with a stirring component 4 that stirs each layer of waste plastic separately.
[0024] The mixing component 4 mixes and crushes waste plastics and cleaning liquid, causing the waste plastics to rub against each other and form water flow. The friction and water flow impact remove dirt from the waste plastics. At the same time, during the mixing process, waste plastics that can pass through the filter holes 3 fall to the next layer through the filter holes 3. This allows some waste plastics of different sizes to fall from the largest to the smallest at the bottom of the several screening plates 2 and the washing cylinder 1 from top to bottom, thereby improving the cleaning and screening of waste plastics.
[0025] The outer wall of the washing cylinder 1 is provided with a collection component 5 for collecting each layer of waste plastic separately;
[0026] After washing and screening, the collection component 5 is opened from top to bottom, allowing several layers of waste plastics of different sizes to pass through the collection component 5 and be discharged together with the washing liquid. The waste plastics of different sizes are then filtered and separated by the collection component 5.
[0027] It should be noted that the stirring assembly 4 includes a motor 41 fixedly installed at the bottom of the washing cylinder 1 and a stirring shaft 42 rotatably installed inside the washing cylinder 1. The output shaft of the motor 41 passes through the washing cylinder 1 and is fixedly connected to the stirring shaft 42. Several sets of stirring rods 43 are fixedly provided on the outer wall of the stirring shaft 42, and each set of stirring rods 43 is arranged in a circumferential array and rotated on the upper surface of the sieve plate 2.
[0028] The output shaft of motor 41 drives the stirring shaft 42 to rotate, thereby driving several sets of stirring rods 43 to rotate. Each set of stirring rods 43 stirs the cleaning liquid and waste plastic above each screening plate 2, while pushing and cleaning the waste plastic blocking the filter holes 3 on the upper surface of the screening plate 2.
[0029] Specifically, the stirring shaft 42 is composed of several short shafts 421, and the lower end of the lowest short shaft 421 is fixedly connected to the output shaft of the motor 41. Each short shaft 421 has a threaded post 422 integrally formed at its upper end, and the upper end of the threaded post 422 is threadedly connected to the adjacent short shaft 421 above it. A sieve plate 2 is sleeved on the outer wall of the threaded post 422, and two adjacent short shafts 421 are clamped on both sides of the sieve plate 2. A limiting protrusion 423 is integrally formed on the inner wall of the washing cylinder 1. A groove is opened on the outer wall of the sieve plate 2, and the limiting protrusion 423 is slidably arranged in the groove. The thread direction of the threaded post 422 is opposite to the rotation direction of the stirring shaft 42.
[0030] When it is necessary to remove the screening plate 2, rotate the threaded column 422 to remove the threaded column 422 from top to bottom, thereby removing the screening plate 2 for replacement and maintenance.
[0031] Furthermore, the collection component 5 includes several through holes opened on the outer wall of the washing cylinder 1 and a discharge port 51 fixed in the through holes. The lower inner walls of the discharge ports 51 are flush with the upper surfaces of the screening plates 2. A collection trough 53 is installed at the bottom of the discharge port 51 through the recycling component 6. A filter screen 54 is fixed inside the lower end of the collection trough 53. A valve 52 is installed inside the discharge port 51.
[0032] The valves 52 are opened sequentially from top to bottom, allowing several layers of waste plastic of different sizes to be discharged through the outlet 51 along with the cleaning liquid and flow onto the filter screen 54 in the collection tank 53. The cleaning liquid and dirt pass through the filter screen 54, leaving the waste plastic of different sizes on the filter screen 54.
[0033] Furthermore, the recycling assembly 6 includes a recycling tank 61 fixed at the bottom of each discharge port 51 and a water pump 62 fixed at the bottom of the lowest recycling tank 61. The recycling tanks 61 are connected to each other through a pipe 63. The recycling tank 61 is inserted into a receiving collection tank 53. The water inlet of the water pump 62 extends through and into the lowest recycling tank 61. The water outlet of the water pump 62 is fixedly connected to a return pipe 64, and the upper end of the return pipe 64 extends to the upper end of the cleaning cylinder 1.
[0034] The cleaning fluid passing through the filter screen 54 flows through the pipe 63 to the bottom recovery tank 61 and is sucked in by the water pump 62, and then reinjected into the cleaning cylinder 1 through the return pipe 64.
[0035] In some embodiments, the right end face of the recycling tank 61 is provided with an upper insertion hole 7, and a receiving collection tank 53 is inserted into the insertion hole 7. A retaining ring 8 is fixed on the upper outer wall of the collection tank 53, and the bottom of the retaining ring 8 abuts against the recycling tank 61.
[0036] Pull the collection trough 53 to the right to open the socket 7 and pour out the waste plastic.
[0037] Working method: During operation, the crushed waste plastic is poured into the washing cylinder 1 and started. The motor 41 drives several sets of stirring rods 43 to rotate through the stirring shaft 42. Each set of stirring rods 43 stirs the washing liquid and waste plastic above each screen plate 2, while pushing and cleaning the waste plastic blocking the filter holes 3 on the upper surface of the screen plate 2.
[0038] After washing and screening, valves 52 are opened sequentially from top to bottom, allowing several layers of waste plastic of different sizes to be discharged through outlet 51 along with the washing liquid and flow onto filter screen 54 in collection tank 53. The washing liquid and dirt pass through filter screen 54, leaving waste plastic of different sizes on filter screen 54. Then, pull out the insertion hole 7 of collection tank 53 to the right and pour out the waste plastic.
[0039] The cleaning fluid flows through pipe 63 to the bottom recovery tank 61 and is sucked in by water pump 62, and then reinjected into cleaning cylinder 1 through return pipe 64.
[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An integrated equipment for recycling waste plastics, comprising a washing cylinder (1), characterized in that: The washing cylinder (1) is equipped with several screening plates (2) for screening waste plastics, and the filter holes (3) on the screening plates (2) decrease in size from top to bottom. The screening plate (2) divides the washing cylinder (1) into several layers, and the washing cylinder (1) is equipped with a stirring component (4) to stir each layer of waste plastic separately. The outer wall of the washing cylinder (1) is provided with a collection component (5) for collecting each layer of waste plastic.
2. The integrated equipment for recycling waste plastics according to claim 1, characterized in that: The stirring assembly (4) includes a motor (41) fixedly installed at the bottom of the washing cylinder (1) and a stirring shaft (42) rotatably installed inside the washing cylinder (1). The output shaft of the motor (41) passes through the washing cylinder (1) and is fixedly connected to the stirring shaft (42). Several sets of stirring rods (43) are fixedly provided on the outer wall of the stirring shaft (42), and each set of stirring rods (43) is arranged in a circumferential array and rotated on the upper surface of the sieve plate (2).
3. The integrated equipment for recycling waste plastics according to claim 2, characterized in that: The stirring shaft (42) is composed of several short shafts (421), and the lower end of the lowest short shaft (421) is fixedly connected to the output shaft of the motor (41). The upper end of each short shaft (421) is integrally formed with a threaded column (422), and the upper end of the threaded column (422) is threadedly connected to the adjacent short shaft (421) above. A sieve plate (2) is sleeved on the outer wall of the threaded column (422), and two adjacent short shafts (421) are clamped on both sides of the sieve plate (2). A limiting protrusion (423) is integrally formed on the inner wall of the washing cylinder (1), and a groove is opened on the outer wall of the sieve plate (2), and the limiting protrusion (423) is slidably arranged in the groove.
4. The integrated equipment for recycling waste plastics according to claim 1, characterized in that: The collection component (5) includes several through holes opened on the outer wall of the washing cylinder (1) and a discharge port (51) fixed in the through holes. The lower inner wall of the discharge ports (51) is flush with the upper surface of the screening plates (2). The bottom of the discharge port (51) is equipped with a collection trough (53) through the recycling component (6). A filter screen (54) is fixed inside the lower end of the collection trough (53). A valve (52) is installed inside the discharge port (51).
5. The integrated waste plastic recycling equipment according to claim 4, characterized in that: The recycling assembly (6) includes a recycling tank (61) fixed at the bottom of each discharge port (51) and a water pump (62) fixed at the bottom of the lowest recycling tank (61). The recycling tanks (61) are connected by pipes (63). The recycling tank (61) is inserted into a receiving collection tank (53). The inlet of the water pump (62) extends through and into the lowest recycling tank (61). The outlet of the water pump (62) is fixedly connected to a return pipe (64), and the upper end of the return pipe (64) extends to the upper end of the cleaning cylinder (1).
6. The integrated equipment for recycling waste plastics according to claim 5, characterized in that: The right end face of the recycling tank (61) is provided with an upper insertion hole (7), and a receiving collection tank (53) is inserted into the insertion hole (7). A retaining ring (8) is fixed on the upper outer wall of the collection tank (53), and the bottom of the retaining ring (8) abuts against the recycling tank (61).