PP plastic granulation device with recovery structure
By connecting a screen cylinder and a hopper at the tail end of the granulator, and utilizing rotary screening and eccentric crankshaft drive, the problem of plastic granule classification and recycling in the existing technology is solved, achieving efficient granule classification and recycling and improving production efficiency.
Patent Information
- Application Number
- CN202520400101.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Existing granulators cannot effectively classify and recycle particles whose size does not meet the tolerance range during the plastic granule production process, resulting in the need for additional material transfer and screening.
A screen cylinder is connected to the tail end of the granulator, and a hopper is set inside the screen cylinder. The rotating screen cylinder and hopper, in conjunction with the eccentric crankshaft and flywheel, realize the screening and classification collection of plastic granules. The screen cylinder and the feeding pipe are driven to rotate by the screening motor and the pushing motor to collect granules of different sizes.
It enables efficient sorting and recycling of plastic granules during the production process, reduces additional material transfer and screening steps, and improves production efficiency.
Smart Images
Figure CN223790800U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of granulation equipment technology, specifically to a PP plastic granulation device with a recycling structure. Background Technology
[0002] When PP plastic is manufactured from raw materials, it is granulated into granules by a granulator for storage and transportation. The granulator uses an extrusion and drawing process to form strips of plastic, which are then cut into granules. During the cutting process, various factors can lead to variations in granule size. Granules with particle size errors exceeding tolerances are unusable and need to be recycled. However, existing granulator structures complete the processing after drawing and cutting the plastic into strips, failing to sort or recycle the granules. This necessitates further material transfer and subsequent screening. Therefore, existing granulators need improvement to enable the classification and collection of plastic granules during the production process. Utility Model Content
[0003] The purpose of this utility model is to address the defects and deficiencies of the existing technology by providing a PP plastic granulation device with a recycling structure. It classifies plastic granules by setting a rotating screen cylinder and also sets a discharge and collection structure for the material retained in the screen cylinder, thereby realizing the classification and recycling of materials in the granulation production process.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] It includes a granulator and a connecting pipe, wherein the connecting pipe is fixedly installed at the outlet end of the granulator via a flange, and it also includes:
[0006] The screen cylinder is located at the rear of the granulator, and the outlet end of the connecting pipe is inserted into the screen cylinder.
[0007] The feeding pipe is located behind the screen cylinder, and the front end of the feeding pipe is inserted into the screen cylinder.
[0008] The hopper is sleeved and fixed on the front end of the feeding pipe, and the end of the hopper away from the feeding pipe is movably abutted against the inner wall of the screen cylinder.
[0009] The support plate is screwed onto the front plate of the screen cylinder via a bearing, and the connecting pipe is inserted and fixed on the support plate.
[0010] Preferably, a connecting seat is screwed onto the feeding pipe via a bearing, and the connecting seat is fixedly mounted on the rear side wall of the screen cylinder. A frame is provided at the rear of the granulator, and a support plate is fixedly mounted on the front beam of the frame. The connecting seat is screwed onto the rear beam of the frame via a bearing. A collecting cylinder is fixedly mounted on the frame, and the collecting cylinder is sleeved on the outside of the screen cylinder. A guide groove is provided on the side wall of the collecting cylinder.
[0011] Preferably, a screening motor is fixedly mounted on the frame, a screening main gear is fixedly mounted on the output shaft of the screening motor, and a screening secondary gear is fixedly mounted on the connecting seat, with the screening main gear and the screening secondary gear meshing with each other.
[0012] Preferably, a guide pipe is screwed onto the rear end of the feeding pipe via a bearing, a spiral roller is inserted inside the feeding pipe, and the front end of the spiral roller extends into the hopper. The rear end shaft of the spiral roller is screwed onto the side plate of the guide pipe via a bearing. A mounting frame is provided at the rear of the frame, the guide pipe is fixedly mounted on the top plate of the mounting frame, and a feeding motor is fixedly mounted on the mounting frame. The output shaft of the feeding motor is connected to the rear end shaft of the spiral roller via a transmission connection.
[0013] Preferably, a flywheel is spun on the frame via bearings, a main pushing gear is fixedly mounted on the flywheel shaft, a secondary pushing gear is sleeved and fixed on the feeding pipe, the main pushing gear and the secondary pushing gear are meshed with each other, a pushing motor is fixedly mounted on the mounting frame, and the output shaft of the pushing motor is driven by the flywheel.
[0014] Preferably, a crankshaft is spun onto the mounting bracket via bearings, and the axis of the crankshaft is eccentrically positioned with respect to the axis of the flywheel. The output shaft of the pusher motor is connected to the end shaft of the crankshaft via a drive connection. A pin is fixedly mounted on the crank end of the crankshaft, and a guide groove is provided on the end face of the flywheel, with the pin movably inserted into the guide groove.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This solution connects a screen cylinder to the tail end of the granulator and sets up a hopper inside the screen cylinder, thereby sorting the plastic granules produced by the granulator and guiding and collecting them separately for centralized recycling by the equipment.
[0017] 2. In this solution, a connecting pipe for feeding plastic granules is connected to the front end of the screen cylinder. A rotatable hopper is set inside the screen cylinder and connected to the feeding pipe. Then, through the cooperation of the eccentrically set crankshaft and flywheel, the rotation drive of the hopper is realized, and the rotation speed of the hopper can be changed periodically. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 yes Figure 1 The left rear view.
[0020] Figure 3 This is a schematic diagram of the structure of the collecting cylinder in this utility model.
[0021] Figure 4 This is a schematic diagram of the structure of the screen cylinder and hopper in this utility model.
[0022] Figure 5 This is a schematic diagram of the structure of the screen cylinder, feeding pipe, and connecting seat in this utility model.
[0023] Figure 6 This is a schematic diagram of the structure of the feed pipe, flywheel, and crankshaft in this utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Granulator; 2. Connecting pipe; 3. Screen cylinder; 4. Feeding pipe; 5. Hopper; 6. Support plate; 7. Connecting seat; 8. Frame; 9. Collection cylinder; 10. Screening motor; 11. Screening main gear; 12. Screening secondary gear; 13. Guide pipe; 14. Spiral roller; 15. Mounting frame; 16. Feeding motor; 17. Flywheel; 18. Pushing main gear; 19. Pushing secondary gear; 20. Pushing motor; 21. Crankshaft; 22. Pin shaft; 23. Guide groove. Detailed Implementation
[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] like Figure 1-6 As shown, the specific implementation adopts the following technical solution:
[0028] It includes a frame 8, a screen cylinder 3, and a granulator 1, wherein the granulator 1 is located in front of the frame 8, the screen cylinder 3 is located inside the frame 8, and screen holes are opened on the side wall of the screen cylinder 3.
[0029] Support plate 6 is fixedly mounted on the front crossbeam of the frame 8, and the support plate 6 is screwed onto the front plate of the screen cylinder 3 via bearings.
[0030] The connecting pipe 2 is fixed on the support plate 6, and the front end of the connecting pipe 2 is connected to the outlet end of the granulator 1 through a flange. The rear end of the connecting pipe 2 extends into the screen cylinder 3, and the connecting pipe 2 is located on the left side of the axis of the screen cylinder 3.
[0031] The connecting seat 7 is spun onto the rear crossbeam of the frame 8 via a bearing, and the connecting seat 7 is coaxially arranged with the screen cylinder 3. The connecting seat 7 is fixedly arranged on the rear end face of the screen cylinder 3.
[0032] The feeding pipe 4 is screwed into the connecting seat 7 via a bearing, and the entire end of the feeding pipe 4 extends into the screen cylinder 3.
[0033] The hopper 5 is sleeved and fixed on the front end of the feeding pipe 4. The front side wall of the hopper 5 is movably abutted against the support plate 6, the rear side wall of the hopper 5 is movably abutted against the rear inner wall of the screen cylinder 3, and the side of the hopper 5 away from the feeding pipe 4 is movably abutted against the inner side wall of the screen cylinder 3.
[0034] The material is fed into the screen cylinder 3 through the connecting pipe 2, and the screen cylinder 3 is rotated to perform screening. The material is scraped up and fed into the feeding pipe 4 by the rotating hopper 5 through the feeding pipe 4.
[0035] The screening motor 10 is fixedly mounted on the frame 8.
[0036] The main screening gear 11 is fixedly mounted on the output shaft of the screening motor 10.
[0037] Screening auxiliary gear 12 is sleeved and fixed on the connecting seat 7, and the screening main gear 11 and the screening auxiliary gear 12 are meshed with each other.
[0038] The guide tube 13 is screwed onto the rear end of the feed tube 4 via a bearing;
[0039] Mounting bracket 15, which is located at the rear of the frame 8, and the guide tube 13 is fixedly mounted on the mounting bracket 15;
[0040] The spiral roller 14 is inserted into the feeding pipe 4, with its front end extending into the hopper 5 and its rear end shaft screwed onto the side wall of the guide pipe 13 via a bearing.
[0041] The feeding motor 16 is fixedly mounted on the mounting bracket 15, and the output shaft of the feeding motor 16 is connected to the rear end shaft of the spiral roller 14 for transmission.
[0042] Flywheel 17, wherein the flywheel 17 is spun onto the frame 8 via a rotating shaft;
[0043] The main pusher gear 18 is fixedly mounted on the rotating shaft of the flywheel 17;
[0044] The pusher gear 19 is sleeved and fixed on the feeding pipe 4, and the pusher main gear 18 and the pusher gear 19 are meshed with each other. The flywheel 17 rotates to drive the feeding pipe 4 to rotate, and the feeding pipe 4 drives the hopper 5 to rotate. The hopper 5 scrapes up and collects the material in the screen cylinder 3, and the collected material is sent out through the feeding pipe 4.
[0045] The crankshaft 21 is spun onto the mounting bracket 15 via bearings. The axis of the crankshaft 21 is eccentrically located to the right of the axis of the flywheel 17, and the port of the connecting pipe 2 is located to the left of the axis of the flywheel 17.
[0046] The pin 22 is fixedly mounted on the crank of the crankshaft 21. A guide groove 23 is provided on the rear end face of the flywheel 17. The pin 22 is movably inserted into the guide groove 23. The eccentric distance between the axis of the pin 22 and the axis of the crankshaft 21 is greater than the eccentric distance between the axis of the flywheel 17 and the axis of the crankshaft 21. Thus, the crankshaft 21 drives the pin 22 to rotate and pushes the flywheel 17 to rotate. When the pin 22 pushes the flywheel 17 to rotate, the eccentric distance between the axis of the spool and the axis of the flywheel 17 increases and decreases with a cycle of 360° rotation of the flywheel 17, thereby realizing the variable speed motion of the flywheel 17, that is, the variable speed rotation of the hopper 5. The speed of the flywheel 17 increases when the distance between the small cycle axis and the axis of the flywheel 17 decreases.
[0047] The pusher motor 20 is fixedly mounted on the mounting bracket 15, and the output shaft of the pusher motor 20 is connected to the rear end shaft of the crankshaft 21 via a transmission connection.
[0048] When using this device, the plastic granules produced by the granulator 1 are fed into the screen cylinder 3 through the connecting pipe 2. The screening motor 10 drives the screening main gear 11 to rotate, which in turn drives the connecting seat 7 to rotate counterclockwise through the meshing screening main gear 11 and screening secondary gear 12. The connecting seat 7 drives the screen cylinder 3 to rotate, thereby screening the plastic granules in the screen cylinder 3. Particles smaller than the mesh size of the screen cylinder 3 fall into the collecting cylinder 9 and are discharged through the guide groove on the collecting cylinder 9. Plastic granules larger than the mesh size of the screen cylinder 3 remain in the screen cylinder 3. The pusher motor 20 drives the crankshaft 21 to rotate counterclockwise. The crankshaft 21 is connected to the flywheel 17 through the pin 22, thereby driving the flywheel 17 to rotate counterclockwise. The flywheel 17 drives the feeding pipe 4 to rotate through the meshing pusher main gear 18 and pusher secondary gear 19, thereby driving the feeding pipe to rotate. 4 drives the hopper 5 to rotate counterclockwise inside the screen cylinder 3. The hopper 5 scrapes up and collects the large-diameter plastic particles remaining in the screen cylinder 3. The feeding motor 16 drives the spiral roller 14 to rotate. The spiral roller 14 pushes the large-diameter plastic particles collected in the hopper 5 into the feeding pipe 4, and then sends the large-diameter plastic particles out through the guide pipe 13. When the crankshaft 21 drives the flywheel 17 to rotate through the pin 22, the crankshaft 21 and the flywheel 17 are eccentrically set. Thus, the crankshaft 21 drives the pin 22 to slide in the guide groove 23 on the flywheel 17, thereby driving the flywheel 17 to rotate. When the crankshaft 21 drives the pin 22 to rotate and causes the pin 22 to move closer to the axis of the flywheel 17, the rotation speed of the flywheel 17 is increased. Conversely, when the crankshaft 21 drives the pin 22 to move away from the axis of the flywheel 17, the rotation speed of the flywheel 17 is slowed down.
[0049] Compared with the prior art, the beneficial effects of this utility model are:
[0050] 1. This device uses a rotating screen cylinder 3, with a hopper 5 inside the screen cylinder 3 via a feeding pipe 4 and the hopper 5 is driven to rotate. A connecting pipe 2 is inserted inside the screen cylinder 3 via a support plate 6, thereby enabling the plastic granules produced by the granulator 1 to be screened according to their particle size and the two types of plastic granules to be collected and recycled separately.
[0051] 2. This device is designed to drive the rotation of the hopper 5 and the feeding roller. A flywheel 17 driven by the crankshaft 21 is provided. This allows the flywheel 17 to rotate at a variable speed while the crankshaft 21 rotates at a constant speed. This enables the hopper 5 to rotate at a variable speed, so that when the hopper 5 rotates to the connecting pipe 2, the rotation speed is increased to avoid blocking the material discharge from the connecting pipe 2 for a long time.
[0052] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A PP plastic granulating device with a recycling structure, comprising a granulator (1) and a connecting pipe (2), wherein the connecting pipe (2) is fixedly arranged on the outlet end of the granulator (1) through a flange penetration; characterized in that, It also contains: The screen cylinder (3) is arranged at the rear of the granulator (1), and the outlet end of the connecting pipe (2) is inserted into the screen cylinder (3); The feeding pipe (4) is arranged at the rear of the screen cylinder (3), and the front end of the feeding pipe (4) is inserted into the screen cylinder (3); The hopper (5) is sleeved and fixed on the front end of the feeding pipe (4), and the end away from the feeding pipe (4) is movably arranged on the inner side wall of the screen cylinder (3); The support plate (6) is rotatably arranged on the front panel of the screen cylinder (3) through a bearing, and the connecting pipe (2) is fixedly arranged on the support plate (6).
2. The PP plastic granulation device with a recycling structure according to claim 1, characterized in that: The connecting seat (7) is rotatably sleeved on the feeding pipe (4) through a bearing, and the connecting seat (7) is fixedly arranged on the rear side wall of the screen cylinder (3). The rear of the granulator (1) is provided with a rack (8), the support plate (6) is fixedly arranged on the front beam frame of the rack (8), the connecting seat (7) is rotatably arranged on the rear beam frame of the rack (8), and the rack (8) is fixedly provided with a collecting cylinder (9). The collecting cylinder (9) is sleeved outside the screen cylinder (3), and a guide groove is formed in the side wall of the collecting cylinder (9).
3. The PP plastic granulation device with a recycling structure according to claim 2, characterized in that: The rack (8) is fixedly provided with a screening motor (10), and a screening main gear (11) is fixedly arranged on the output shaft of the screening motor (10). The connecting seat (7) is fixedly provided with a screening auxiliary gear (12), and the screening main gear (11) and the screening auxiliary gear (12) are arranged in meshing relationship.
4. The PP plastic granulation device with a recycling structure according to claim 1, characterized in that: The rear end of the feeding pipe (4) is rotatably sleeved with a guide pipe (13) through a bearing, and a spiral roller (14) is arranged in the feeding pipe (4). The front end of the spiral roller (14) extends into the hopper (5), the rear end shaft of the spiral roller (14) is rotatably arranged on the side plate of the guide pipe (13) through a bearing, the rear of the rack (8) is provided with a mounting rack (15), the guide pipe (13) is fixedly arranged on the top plate of the mounting rack (15), the mounting rack (15) is fixedly provided with a feeding motor (16), and the output shaft of the feeding motor (16) is in transmission connection with the rear end shaft of the spiral roller (14).
5. The PP plastic granulation device with a recycling structure according to claim 2, characterized in that: The rack (8) is rotatably provided with a flywheel (17), the shaft of the flywheel (17) is fixedly provided with a pushing main gear (18), the feeding pipe (4) is fixedly provided with a pushing auxiliary gear (19), and the pushing main gear (18) and the pushing auxiliary gear (19) are arranged in meshing relationship. The mounting rack (15) is fixedly provided with a pushing motor (20), and the output shaft of the pushing motor (20) is in transmission connection with the flywheel (17).
6. The PP plastic granulation device with a recycling structure according to claim 4, characterized in that: The mounting rack (15) is rotatably provided with a crankshaft (21), and the axis of the crankshaft (21) is eccentrically arranged with the axis of the flywheel (17). The output shaft of the pushing motor (20) is in transmission connection with the end shaft of the crankshaft (21). The crank end of the crankshaft (21) is fixedly provided with a pin shaft (22), the end face of the flywheel (17) is provided with a guide groove (23), and the pin shaft (22) is movably arranged in the guide groove (23).