Recycling device for PP plastic granulator

Abstract

The utility model relates to the technical field of PP plastic recovery, and discloses a recovery device for a PP plastic granulator, which comprises a device shell, a hot melting barrel and a crushing mechanism, the bottom of the device shell is fixedly connected with a supporting plate for supporting, the outside of the device shell is rotatably connected with a plate door, the inside of the device shell is fixedly connected with the hot melting barrel, and the hot melting barrel is fixedly connected with the crushing mechanism. A first motor is fixedly connected to the bottom of the hot melting barrel, a rotating rod is fixedly connected to the output end of the first motor, a fixing disc is fixedly connected to the exterior of the rotating rod, and a connecting plate is fixedly connected to the exterior of the sliding sleeve. Materials are screened through the three layers of screening plates, the materials are allowed to pass only when the materials are melted to be small enough in size and can smoothly pass through tiny holes of the screening plates, so that the materials are discharged after reaching the ideal melting degree, the materials are further dispersed through movement of a connecting plate and a sliding plate in the screening process, and the screening efficiency is improved. And the situation that different crushed aggregates are bonded together and agglomerated, and overall melting is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of PP plastic recycling, and in particular to a recycling device for PP plastic granulators. Background Technology

[0002] PP (polypropylene) plastic is the world's second most widely used plastic, and is widely used in packaging, textiles, automobiles and other fields. However, its recycling rate has been less than 10% for a long time, resulting in serious environmental pollution and resource waste. Its recycling technology background involves material properties, limitations of traditional recycling and directions for technological breakthroughs.

[0003] In existing technologies, when recycling PP plastic, the plastic to be recycled is initially crushed by a crushing mechanism to significantly reduce its volume before being conveyed into a melting drum for melting. However, in actual use, the crushed plastic pieces are of varying sizes, which often results in some larger pieces not being heated sufficiently. These larger pieces, due to their relatively large volume, have a relatively small contact area with the heating device, leading to slower heat transfer and a slow rise in their internal temperature. This makes it difficult for them to reach complete melting within the specified time. Furthermore, the operation of the mixing drum is often completed within a certain time limit. When the preset mixing time is reached... The mixing tank will stop working and transport the material inside to the next process. This means that larger, unmelted fragments will also enter the subsequent granulation process along with the melted plastic. In the subsequent process, the unmelted plastic fragments will cause uneven particle size, irregular shape, and even the presence of unmelted hard lumps inside. These substandard plastic particles may have insufficient strength and be prone to breakage during subsequent processing and use, thus affecting the quality and performance of the final product. Therefore, it is necessary to improve the recycling device for PP plastic granulators to solve the above problems. Utility Model Content

[0004] To overcome the problem that larger pieces of material are not fully melted before being transported to the next process when the shredded material is sent into the hot melt tank due to their uneven size, this is a necessary step.

[0005] The technical solution of this utility model is as follows: a recycling device for a PP plastic granulator, including a device shell, a hot melt barrel, and a crushing mechanism. A support plate is fixedly connected to the bottom of the device shell, a door is rotatably connected to the outside of the device shell, a hot melt barrel is fixedly connected to the inside of the device shell, a first motor is fixedly connected to the bottom of the hot melt barrel, a rotating rod is fixedly connected to the output end of the first motor, a fixed plate is fixedly connected to the outside of the rotating rod, a connecting block is fixedly connected to the top of the fixed plate, a sliding plate is slidably connected to the inside of the hot melt barrel, a first screening plate is provided on the inner side of the sliding plate, a second screening plate is provided on the inner side of the sliding plate, a third screening plate is provided on the inner side of the sliding plate, a support wheel is rotatably connected to the sliding plate, a first spring is fixedly connected between the sliding plate and the hot melt barrel, a sliding sleeve is slidably connected to the outside of the rotating rod, and a connecting plate is fixedly connected to the outside of the sliding sleeve.

[0006] Preferably, the hot melt barrel has a groove at the relative position of the sliding plate, and the sliding plate is slidably connected inside the groove.

[0007] Preferably, the rotating rod has a groove at the relative position of the sliding sleeve, and the sliding sleeve is slidably connected inside the groove.

[0008] Preferably, the outer shell of the device is fixedly connected to a fixed shell, and the inside of the fixed shell is slidably connected to a snap-fit ​​plate. The snap-fit ​​plate is snap-fitted to the inside of the door, and a second spring is fixedly connected between the snap-fit ​​plate and the fixed shell. The inside of the hot melt barrel is fixedly connected to a discharge pipe body.

[0009] Preferably, the door panel has a slot at the relative position of the snap-fit ​​plate, and the snap-fit ​​plate snaps into the inside of the slot.

[0010] Preferably, the crushing mechanism includes a feed inlet, which is fixedly connected to the inside of the device housing. A third motor is fixedly connected to the front of the feed inlet, and a first gear is fixedly connected to the output end of the third motor. A first crushing wheel is fixedly connected to the back of the first gear and is rotatably connected to the inside of the feed inlet. A second gear meshes with the outside of the first gear, and a second crushing wheel is fixedly connected to the back of the second gear and is rotatably connected to the inside of the feed inlet.

[0011] Preferably, the first and second grinding wheels are provided with grinding teeth on their outer surfaces, and the grinding teeth are arranged alternately in sequence.

[0012] The beneficial effects of this utility model are as follows: the material is screened by a three-layer screening plate. Only when the material is melted to a sufficiently small volume and can pass smoothly through the tiny holes of the screening plate will it be allowed to pass through. This ensures that the material is discharged after reaching the ideal degree of melting. During screening, the material is further dispersed by the movement of the connecting plate and the sliding plate, which prevents different fragments from sticking together and clumping together, affecting the overall melting. This also avoids the problem of larger fragments being transported to the next process before being fully melted when the crushed fragments are of different sizes and enter the hot melt tank for melting. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the outer casing of the device of this utility model;

[0015] Figure 3 This is a cross-sectional view of the hot melt barrel of this utility model;

[0016] Figure 4 This is a schematic diagram of the rotating rod and its connected components of this utility model;

[0017] Figure 5 This is a schematic diagram of the sliding sleeve and its connected components of this utility model;

[0018] Figure 6 This is a schematic diagram of the fixed shell and its connected components of the present invention;

[0019] Figure 7 This is a schematic diagram of the crushing mechanism of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Device housing; 4. Support plate; 5. Door; 21. Hot melt barrel; 22. First motor; 23. Rotating rod; 24. Fixed plate; 25. Connecting block; 26. Sliding plate; 27. First screening plate; 28. Second screening plate; 29. ​​Third screening plate; 210. Support wheel; 211. First spring; 212. Sliding sleeve; 213. Connecting plate; 214. Fixed shell; 215. Snap-fit ​​plate; 216. Second spring; 217. Heating wire body; 218. Discharge pipe body; 31. Feed inlet; 32. Third motor; 33. First gear; 34. First crushing wheel; 35. Second gear; 36. Second crushing wheel. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figure 1 - Figure 6This utility model provides an embodiment of a recycling device for a PP plastic granulator, including a device housing 1, a hot melt barrel 21, and a crushing mechanism. A support plate 4 is fixedly connected to the bottom of the device housing 1. A door 5 is rotatably connected to the outside of the device housing 1. The hot melt barrel 21 is fixedly connected inside the device housing 1. A first motor 22 is fixedly connected to the bottom of the hot melt barrel 21. A rotating rod 23 is fixedly connected to the output end of the first motor 22. A fixed disk 24 is fixedly connected to the outside of the rotating rod 23. A connecting block 25 is fixedly connected to the top of the fixed disk 24. A sliding plate 26 is slidably connected inside the hot melt barrel 21. A first screening plate 27 and a second screening plate 28 are provided on the inner side of the sliding plate 26. A third screening plate 29 is provided on the inner side of the device. A support wheel 210 is rotatably connected to the sliding plate 26. A first spring 211 is fixedly connected between the sliding plate 26 and the hot melt barrel 21. A sliding sleeve 212 is slidably connected to the outside of the rotating rod 23. A connecting plate 213 is fixedly connected to the outside of the sliding sleeve 212. The material to be recycled is poured into the crushing mechanism for preliminary crushing. The pre-crushed material falls into the hot melt barrel 21. Inside the hot melt barrel 21, the sliding plate 26 collects materials of different sizes. The heating wire body 217 heats the inside of the hot melt barrel 21. The first motor 22 drives the rotating rod 23 to rotate. When the rotating rod 23 rotates, it drives the fixed plate 24 to rotate. When the fixed plate 24 rotates, it drives the connecting block. When the connecting block 25 rotates, it cooperates with the support wheel 210 to drive the sliding plate 26 to move upward. The first spring 211 then provides a thrust to the sliding plate 26, thereby driving the sliding plate 26 to move the material back and forth. When the rotating rod 23 rotates, it drives the connecting plate 213 to rotate through the sliding sleeve 212, thereby driving the material to move inside the sliding plate 26, further improving the screening efficiency. When the material melts, smaller materials fall through the first screening plate 27 to the second screening plate 28 for secondary screening. Larger materials remain inside the sliding plate 26 and melt to a suitable size before falling through the first screening plate 27 into the second screening plate 28. Similarly, the second screening plate 28 intercepts larger materials, allowing them to melt fully. The material then falls into the third screening plate 29 and continues to melt, ensuring it is fully melted before being discharged. The hot melt barrel 21 has a groove at a relative position to the sliding plate 26. The sliding plate 26 is slidably connected inside the groove, which restricts its movement and prevents it from tilting, thus affecting the screening of the material. The rotating rod 23 has a groove at a relative position to the sliding sleeve 212, which is slidably connected inside the groove, restricting its movement and preventing it from interfering with the sliding plate 26 in moving the screening plate upwards. A fixed shell 214 is fixedly connected to the outside of the device housing 1. A snap-fit ​​plate 215 is slidably connected inside the fixed shell 214 and snap-fitted into the inside of the door 5.A second spring 216 is fixedly connected between the snap-fit ​​plate 215 and the fixed housing 214. A discharge pipe body 218 is fixedly connected inside the hot melt barrel 21. The second spring 216 provides a pushing force to the snap-fit ​​plate 215, causing it to more securely snap into the inside of the door 5, thus restricting the rotation of the door 5. A slot is provided on the door 5 at the relative position of the snap-fit ​​plate 215, and the snap-fit ​​plate 215 snaps into the inside of the slot. The snap-fit ​​between the slot and the snap-fit ​​plate 215 restricts the rotation of the door 5, preventing accidental opening of the door 5 during operation of the hot melt barrel 21 and affecting the normal operation of the hot melt barrel 21 and its internal components.

[0023] Please see Figure 2 , Figure 7 In this embodiment, the crushing mechanism includes a feed inlet 31, which is fixedly connected to the inside of the device housing 1. A third motor 32 is fixedly connected to the front of the feed inlet 31. A first gear 33 is fixedly connected to the output end of the third motor 32. A first crushing wheel 34 is fixedly connected to the back of the first gear 33. The first crushing wheel 34 is rotatably connected to the inside of the feed inlet 31. A second gear 35 meshes with the outside of the first gear 33. A second crushing wheel 36 is fixedly connected to the back of the second gear 35. The second crushing wheel 36 is rotatably connected to the inside of the feed inlet 31. Through the cooperation of the first gear 33 and the second gear 35, the third motor 32 drives the first crushing wheel 34 and the second crushing wheel 36 to crush the material. The first crushing wheel 34 and the second crushing wheel 36 are provided with crushing teeth on their outside, and the crushing teeth are arranged alternately. The material is crushed by the alternately arranged crushing teeth, and the volume of the material is initially reduced so that it can enter the hot melt barrel 21 for hot melting.

[0024] During operation, the material to be recycled is poured into the feed inlet 31. The third motor 32 operates, causing the first crushing wheel 34 to rotate. When the first crushing wheel 34 rotates, it engages with the first gear 33 and the second gear 35, driving the second crushing wheel 36 to rotate, thus initially crushing the material. The initially crushed material falls into the hot melt barrel 21, where the sliding plate 26 collects materials of different sizes. The heating wire body 217 heats the interior of the hot melt barrel 21. The first motor 22 then drives the rotating rod 23 to rotate, which in turn drives the fixed plate 24 to rotate. The fixed plate 24 then drives the connecting block 25 to rotate. When the connecting block 25 rotates, it engages with the support wheel 210, causing the sliding plate 26 to move upwards. The first spring 211 then provides thrust to the sliding plate 26, causing it to reciprocate. The rotating rod 23, through the sliding sleeve 212, drives the connecting... The rotating plate 213 drives the material to move inside the sliding plate 26, further improving the screening efficiency. When the material melts, smaller materials fall through the first screening plate 27 to the second screening plate 28 for secondary screening. Larger materials remain inside the sliding plate 26, melt to a suitable size, and then fall through the first screening plate 27 into the second screening plate 28. Similarly, the second screening plate 28 intercepts larger materials, allowing them to fully melt before they fall into the third screening plate 29 for further screening. The material is melted to ensure it is fully melted before being discharged through the discharge pipe body 218. When it is necessary to test the internal components of the device housing 1, the latching plate 215 is slid to the right to disengage it from the door 5, thereby releasing the latching on the door 5 and opening the door 5 for testing. After the test is completed, the door 5 is closed, and the second spring 216 provides a pushing force to the latching plate 215, pushing the latching plate 215 to slide back to its original position, so that the latching plate 215 re-locks onto the door 5, thus restricting the door 5.

[0025] Through the above steps, the material is screened by three layers of screening plates. Only when the material is melted to a sufficiently small volume and can pass smoothly through the tiny holes of the screening plates will it be allowed to pass through. This solves the problem that the crushed material is of different sizes and that larger pieces will be transported to the next process before being fully melted when entering the hot melt barrel 21 for melting.

Claims

1. A recycling device for a PP plastic granulator comprising a device housing (1), characterized in that: The utility model also includes hot melting bucket (21) and smashing mechanism, the bottom of device shell (1) is fixedly connected with support plate (4) of support, the outside of device shell (1) is rotatably connected with board door (5), the inside of device shell (1) is fixedly connected with hot melting bucket (21), the bottom of hot melting bucket (21) is fixedly connected with first motor (22), the output of first motor (22) is fixedly connected with rotating rod (23), the outside of rotating rod (23) is fixedly connected with fixed disc (24), the top of fixed disc (24) is fixedly connected with connecting block (25), the inside of hot melting bucket (21) is slidably connected with sliding plate (26), the inside of sliding plate (26) is provided with first screening plate (27), the inside of sliding plate (26) is provided with second screening plate (28), the inside of sliding plate (26) is provided with third screening plate (29), the inside of sliding plate (26) is rotatably connected with support wheel (210), first spring (211) is fixedly connected between sliding plate (26) and hot melting bucket (21), the outside of rotating rod (23) is slidably connected with sliding sleeve (212), the outside of sliding sleeve (212) is fixedly connected with connecting plate (213), the inside of hot melting bucket (21) is provided with electric heating wire body (217).

2. The recycling device for PP plastic pelletizer according to claim 1, characterized in that: The hot melting bucket (21) is provided with a sliding groove at the opposite position of the sliding plate (26), and the sliding plate (26) is slidably connected in the sliding groove.

3. The recycling device for PP plastic pelletizer as claimed in claim 1, wherein: The rotating rod (23) is provided with a sliding groove at the opposite position of the sliding sleeve (212), and the sliding sleeve (212) is slidably connected in the sliding groove.

4. The recycling device for PP plastic pelletizer as claimed in claim 1, wherein: The outside of the device shell (1) is fixedly connected with a fixed shell (214), the inside of the fixed shell (214) is slidably connected with a clamping plate (215), the clamping plate (215) is clamped and connected in the inside of the board door (5), the second spring (216) is fixedly connected between the clamping plate (215) and the fixed shell (214), and the inside of the hot melting bucket (21) is fixedly connected with a discharge pipe body (218).

5. The recycling device for PP plastic pelletizer as claimed in claim 4, wherein: The board door (5) is provided with a clamping groove at the opposite position of the clamping plate (215), and the clamping plate (215) is clamped and connected in the inside of the clamping groove.

6. The recycling device for PP plastic pelletizer as claimed in claim 1, wherein: The smashing mechanism comprises a feed inlet (31) fixedly connected in the inside of the device shell (1), a third motor (32) fixedly connected to the front face of the feed inlet (31), a first gear (33) fixedly connected to the output of the third motor (32), a first smashing wheel (34) fixedly connected to the back of the first gear (33), the first smashing wheel (34) rotatably connected in the inside of the feed inlet (31), a second gear (35) engaged with the outside of the first gear (33), a second smashing wheel (36) fixedly connected to the back of the second gear (35), and the second smashing wheel (36) rotatably connected in the inside of the feed inlet (31).

7. The recycling device for PP plastic pelletizer as claimed in claim 6, wherein: The first smashing wheel (34) and the second smashing wheel (36) are provided with smashing teeth on the outside, and the smashing teeth are staggered and arranged in sequence.

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