An environmentally friendly granulator for recycling waste plastics

Abstract

The present invention relates to the technical field of granulators, and discloses an environmentally friendly granulator for recycling waste plastics, comprising a machine base and a mixing barrel on the machine base, a feeding barrel installed at the upper end of the mixing barrel, a heating ring installed on the outer side of the mixing barrel, an external shell installed at one end of the mixing barrel, a docking groove provided at one end of the mixing barrel, a connecting flange provided at one end of the heating ring, the external shell and the machine base are fixed by a connecting flange, a heat dissipation shaping shell installed inside the external shell, an extension connecting pipe installed at one end of the heat dissipation shaping shell, a heat conductive inner layer installed inside the extension connecting pipe. The present invention utilizes the cooperation of a transverse heat conductive sheet and a heat dissipation cavity to absorb the heat in the material when the material flows through the extension connecting pipe, so that the material can be quickly solidified into a specified shape when the material is subsequently formed into strips, thereby providing molding conditions for the material.

Description

Technical Field

[0001] The invention relates to the technical field of granulators, in particular to an environmentally friendly granulator for recycling waste plastics. Background Art

[0002] A granulator is a molding machine that can mix materials into specific shapes. The strip production line is low in cost, easy to operate and clean. The granulator's feed rod adopts a heat-treated carbonization process, which is hard and not easy to wear. Its service life is three times that of ordinary feed rods. It adopts advanced lubrication test, small wear, large tile seat, thorough protection of bearings, easy operation and maintenance. The strip production line cost is not high, but this has its advantages for color material mixing, because the equipment must be thoroughly cleaned when changing two batches of different color materials; the molten polymer is extruded from the hot die and cut into pellets by a rotary knife rotating on the die surface. The characteristic of this pelletizing system is its specially designed water spray pelletizing chamber. The water flows in a spiral until it flows out of the pelletizing chamber. After the pellets are cut, they are thrown into the water flow for preliminary quenching. The pellet water slurry is discharged into the pellet slurry tank for further cooling, and then sent to the centrifugal dryer to remove moisture.

[0003] However, when making a granulator, the materials need to be mixed and melted, and then removed by the screw inside the machine, and then formed into strips by the mold. Before the strips are formed, they themselves have extremely high heat, and the heat needs to be discharged to make the material form. The disadvantage of the strip making method is that the cooling section takes up space, and the length of the cooling structure is determined by the temperature requirements of the polymer. Low cooling affects the molding state of the material and the qualified rate of the product. Summary of the Invention

[0004] The present invention provides an environmentally friendly granulator for recycling waste plastics, which has the beneficial effect of rapid cooling and solves the problem that the shortcomings of the strip making method mentioned in the above background technology are that the cooling section requires space, the length of its cooling structure is determined according to the temperature requirements of the polymer, and low cooling affects the molding state of the material and the qualified rate of the product.

[0005] The heat dissipation device is connected with the heat dissipation device by the upper end face of the heat dissipation device, and the heat dissipation device is connected with the heat dissipation device to dissipate heat from the heat source, the heat dissipation device being connected with the heat dissipation device to dissipate heat from the heat source.

[0006] As an optional solution of the environmentally friendly waste plastic recycling granulator described in the present invention, heat-conducting fins are provided on the outside of the heat-conducting inner layer, and the heat-conducting fins are arranged in a ring array inside the heat dissipation cavity, and a pressure pump body is installed on the outside of the liquid inlet pipe.

[0007] As an optional solution of the environmentally friendly waste plastic recycling granulator described in the present invention, a heat exchange cavity is provided inside the heat dissipation and shaping shell, a shaping tube is provided inside the heat exchange cavity, a flow pipe hole is provided inside the shaping tube, one end of the liquid inlet pipe is connected to the heat exchange cavity, and a return liquid diversion pipe is installed at the lower end of the heat dissipation and shaping shell.

[0008] As an optional solution of the environmentally friendly waste plastic recycling granulator of the present invention, a spiral guide plate is installed inside the heat exchange cavity, and the flow tube holes are inserted into the spiral guide plate.

[0009] As an optional solution of the environmentally friendly waste plastic recycling granulator described in the present invention, one end of the heat dissipation and shaping shell is provided with a limiting and gathering edge, and the inner diameter of the end of the limiting and gathering edge is consistent with the inner diameter of the extension connecting pipe.

[0010] As an optional solution of the environmentally friendly waste plastic recycling granulator of the present invention, a limiting strip is provided on the outer surface of the transverse heat conducting plate.

[0011] As an optional solution of the environmentally friendly waste plastic recycling granulator of the present invention, cluster boxes are installed at both ends of the heat dissipation pipe, and the two ends of the heat dissipation pipe are connected to the liquid inlet pipe and the return pipe through the cluster boxes.

[0012] As an optional solution of the environmentally friendly waste plastic recycling granulator of the present invention, two groups of parallel heat conducting plates are provided inside the heat dissipation pipe, and each group of parallel heat conducting plates are arranged in a staggered manner.

[0013] As an optional solution of the environmentally friendly waste plastic recycling granulator described in the present invention, an axial flow fan is also installed inside the heat dissipation box, a conical cavity is provided between every two heat dissipation tubes, the conical cavity is an inner cone guide groove, a diffusion arc surface is provided on one side of the inner cone guide groove, and side arc surfaces are provided on both sides of the heat dissipation tube.

[0014] As an optional solution of the environmentally friendly waste plastic recycling granulator of the present invention, concave diversion pits are provided on both sides of one end of the heat dissipation pipe.

[0015] The present invention has the following beneficial effects:

[0016] 1. This environmentally friendly waste plastic recycling granulator, through the cooperation of the transverse heat conducting plate and the heat dissipation cavity, allows the material to absorb the heat inside the material when it flows through the extension connecting tube, so that when the material is subsequently formed into strips, the material can be quickly solidified into a specified shape, providing molding conditions for the material. In addition, the device adopts a conductor cooling method, which does not affect the internal material and realizes continuous cooling operation of the material, so it can be used for long-term processing.

[0017] 2. This environmentally friendly waste plastic recycling granulator has heat-conducting fins that conduct heat. When the heat-conducting fins are wrapped by coolant, the heat is quickly transferred to the coolant, thereby accelerating the heat transfer speed of the heat-conducting inner layer of the device and the thermal conductivity of the material. Through the contact between the coolant and the shaping tube, when the material flows through the flow tube hole, the heat will be filled in the shaping tube. At this time, the heat is transferred from the shaping tube to the coolant to complete the heat transfer. Then the heat flows out through the return liquid diversion pipe and flows into the inside of the return pipe. The coolant inside the heat exchange cavity is in a continuous flow mode, which can quickly bring out the heat inside the heat exchange cavity.

[0018] 3. The environmentally friendly waste plastic recycling granulator, through the action of the spiral guide plate, sets the interior of the heat exchange cavity into a spiral space. When the coolant flows into the heat exchange cavity from one end, it will flow in a spiral shape along the trajectory of the spiral guide plate. In this way, the contact time of the coolant inside the heat exchange cavity can be increased, thereby further increasing the heat exchange time between the shaping tube and the coolant, increasing the heat exchange efficiency of the shaping tube, and making the internal heat extraction more thorough, so that the heat of the material is completely extracted after passing through the flow tube hole, so that the material reaches a specified state; through the action of the parallel heat conducting plates, the two groups of parallel heat conducting plates are cross-combined and evenly arranged inside the heat pipe. When the coolant flows, it will flow through the parallel heat conducting plates and fit with them throughout the process, thereby maximizing the cooling efficiency of the device, making the heat extraction to the outside of the heat pipe more thorough, thereby improving the thermal conductivity of the heat pipe, providing a cooling effect for the coolant of the device, and making the device form a circulating heat dissipation state, saving subsequent cooling consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the present invention as a whole.

[0020] Figure 2 This is a schematic diagram of the connection structure between the external shell and the mixing barrel of the present invention.

[0021] Figure 3 It is a schematic diagram of the internal structure of the external shell of the present invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the heat dissipation shaping shell of the present invention.

[0023] Figure 5 Schematic diagram of the heat-conducting inner layer structure of the present invention.

[0024] Figure 6 It is a schematic diagram of the heat dissipation pipe structure of the present invention.

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the heat dissipation pipe of the present invention.

[0026] Figure 8 It is a schematic diagram of the internal structure of the heat dissipation box of the present invention.

[0027] In the figure: 1. Machine base; 2. Mixing barrel; 3. Feeding barrel; 4. Heating ring; 5. External shell; 6. Connecting flange; 7. Heat dissipation box; 8. Cluster box; 9. Heat dissipation pipe; 10. Liquid inlet pipe; 11. Return pipe; 12. Pressure pump body; 13. Heat dissipation shaping shell; 14. Liquid feeding diverter pipe; 15. Liquid return diverter pipe; 16. Heat exchange cavity; 17. Extension connecting pipe; 18. Heat conductive inner layer; 19. Horizontal heat conductive sheet; 20. Heat dissipation cavity; 21. Heat conductive fin; 22. Limiting strip; 23. Docking groove; 24. Shaping pipe; 25. Flow pipe hole; 26. Spiral guide sheet; 27. Limiting and convergent edge; 28. Parallel heat conductive sheet; 29. ​​Side arc surface; 30. Concave guide pit; 31. Inner cone guide groove; 32. Diffusion arc surface; 33. Axial fan. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] See also Figure 1-8 The outer wall of the heat dissipation device 1 is provided with a heat dissipation device 11, and the heat dissipation device 11 is provided with a heat dissipation device 12. The heat dissipation device 11 is provided with a heat dissipation device 12 and a heat dissipation device 13. The heat dissipation device 11 is provided with a heat dissipation device 12.

[0031] During use, one end of the extension connecting tube 17 is inserted into the interior of the docking groove 23, and then the two connecting flanges 6 complete the fixation between the external shell 5 and the mixing barrel 2. The material is heated and mixed through the mixing barrel 2 and pushed forward and pushed into the interior of the extension connecting tube 17. At this time, the material in the extension connecting tube 17 is in a gel state and flows between the transverse heat conducting plates 19. While flowing, it will directly contact the outer surface of the transverse heat conducting plates 19. At this time, the transverse heat conducting plates 19 will transfer the heat in the material to the interior of the heat conducting inner layer 18, and the heat conducting inner layer 18 extends to the interior of the heat dissipation cavity 20.

[0032] At the same time, the coolant inside the heat dissipation pipe 9 is transported to the interior of the heat dissipation cavity 20 through the liquid inlet pipe 10 and the liquid supply diversion pipe 14. After entering the heat dissipation cavity 20, it contacts the outer surface of the heat-conducting inner layer 18. After absorbing the heat in the heat-conducting inner layer 18, it will flow out of the heat dissipation cavity 20 along the return pipe 11. After cooling is completed, it is sent back to the heat dissipation box 7 by the return pipe 11, and the coolant is subjected to heat dissipation treatment. Through the cooperation of the transverse heat conductive plate 19 and the heat dissipation cavity 20, the material absorbs the heat in the material when flowing through the extension connecting pipe 17, so that when the material is subsequently formed into strips, the material can be quickly solidified into a specified shape, providing molding conditions for the material, and the device adopts a conductor cooling method, which does not affect the internal material and realizes continuous cooling operation of the material, so it can be processed and used for a long time.

[0033] Example 2

[0034] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-8 The outer side of the heat-conducting inner layer 18 is provided with heat-conducting fins 21 , and the heat-conducting fins 21 are arranged in a ring array inside the heat dissipation cavity 20 . The outer side of the liquid inlet pipe 10 is provided with a pressure pump body 12 .

[0035] The coolant flows into the heat dissipation cavity 20 through the liquid delivery shunt pipe 14 and then contacts the outer surface of the heat-conducting inner layer 18. However, after the outer surface of the heat-conducting inner layer 18 contacts the outer surface of the heat-conducting inner layer 18, although the outer surface of the heat-conducting inner layer 18 and the coolant have a large contact area, it is difficult to dissipate the heat in the heat-conducting inner layer 18, resulting in a low heat conduction efficiency of the heat-conducting inner layer 18.

[0036] The heat-conducting fins 21 are arranged in a circular array inside the heat dissipation cavity 20 and on the outer surface of the heat-conducting inner layer 18, so that the heat-conducting inner layer 18 can conduct heat to the inside of the heat-conducting fins 21 and keep the heat-conducting inner layer 18 in contact with the coolant over a large area for heat conduction. At the same time, the heat-conducting fins 21 conduct heat, so that when the heat-conducting fins 21 are wrapped by the coolant, the heat is quickly transferred to the coolant, thereby accelerating the heat transfer speed of the heat-conducting inner layer 18 of the device and the thermal conductivity efficiency of the material.

[0037] Example 3

[0038] This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1-8 A heat exchange cavity 16 is provided inside the heat dissipation shaping shell 13, a shaping tube 24 is provided inside the heat exchange cavity 16, a flow pipe hole 25 is provided inside the shaping tube 24, one end of the liquid inlet pipe 10 is connected to the heat exchange cavity 16, and a return liquid diversion pipe 15 is installed at the lower end of the heat dissipation shaping shell 13.

[0039] Relying solely on the heat-conducting inner layer 18 to extract heat from the material to accelerate the solidification of the material will result in low efficiency, making it difficult to completely extract the heat from the material, and during molding, the material will be in a soft rubber state and difficult to cut.

[0040] After the material passes through the heat-conducting inner layer 18 and conducts heat, it will then enter the flow tube hole 25, and form a strip structure through the limitation of the flow tube hole 25. The coolant is transported to the interior of the heat exchange cavity 16 through the liquid inlet pipe 10 for filling, so that the coolant directly contacts the flow tube hole 25 and completely wraps the shaping tube 24. Through the contact between the coolant and the shaping tube 24, when the material flows through the flow tube hole 25, the heat will be filled in the shaping tube 24. At this time, the heat is transferred from the shaping tube 24 to the coolant, completing the heat transfer. Then the heat flows out through the return liquid diversion pipe 15 and flows into the interior of the return pipe 11. The coolant inside the heat exchange cavity 16 is in a continuous flow mode, which can quickly bring out the heat inside the heat exchange cavity 16.

[0041] Example 4

[0042] This embodiment is an improvement made on the basis of embodiment 3. For details, please refer to Figure 1-8 A spiral guide plate 26 is installed inside the heat exchange cavity 16 , and the flow tube hole 25 is inserted into the spiral guide plate 26 .

[0043] When the coolant flows through the heat exchange cavity 16, the flow rate is too fast to maximize the heat exchange efficiency of the coolant, resulting in incomplete heat conduction.

[0044] Through the action of the spiral guide plate 26, the interior of the heat exchange cavity 16 is set as a spiral space. When the coolant flows into the heat exchange cavity 16 from one end, it will flow in a spiral shape along the trajectory of the spiral guide plate 26. In this way, the contact time of the coolant inside the heat exchange cavity 16 can be increased, thereby further increasing the heat exchange time between the shaping tube 24 and the coolant, increasing the heat exchange efficiency of the shaping tube 24, and making the internal heat extraction more thorough. As a result, after the material passes through the flow tube hole 25, the heat is completely extracted, and the material reaches the specified state.

[0045] Example 5

[0046] This embodiment is an improvement made on the basis of embodiment 4. For details, please refer to Figure 1-8 One end of the heat dissipation shaping shell 13 is provided with a limiting convergence edge 27 , and the inner diameter of the end of the limiting convergence edge 27 is consistent with the inner diameter of the extension connecting tube 17 .

[0047] By making one end of the limiting and converging edge 27 consistent with the inner diameter of the extension connecting tube 17, the material will be converged by the oblique structure of the limiting and converging edge 27 after passing through the interior of the extension connecting tube 17, so that the material is concentrated inward, making it easier for the material to enter the interior of the flow tube hole 25.

[0048] Example 6

[0049] This embodiment is an improvement made on the basis of embodiment 5. For details, please refer to Figure 1-8 A limiting strip 22 is provided on the outer surface of the transverse heat conducting plate 19 .

[0050] When the material passes through the extension tube 17 and flows toward the heat dissipation shaping shell 13, it flows in a parallel state. Some of the material in the middle position will directly hit the middle position of one end of the heat dissipation shaping shell 13. However, the flow tube holes 25 are arranged outside the central axis of the heat dissipation shaping shell 13, making it difficult for the material to enter the flow tube holes 25 in the first place.

[0051] Through the action of the limiting strip 22, the material concentrated at the central axis position is diverted to both sides of the central axis, so that it flows to the outer position of the central axis, thereby making the overall flow direction of the material biased toward the position of the flow tube hole 25, making it easier for the material to enter the flow tube hole 25.

[0052] Example 7

[0053] This embodiment is an improvement made on the basis of embodiment 6. For details, please refer to Figure 1-8 Cluster boxes 8 are installed at both ends of the heat dissipation tube 9, and the two ends of the heat dissipation tube 9 are connected to the liquid inlet pipe 10 and the return pipe 11 through the cluster boxes 8.

[0054] Both ends of the heat dissipation tube 9 are connected to the cluster box 8. Through the structural shape of the cluster box 8, when the cold zone also flows into the cluster box 8, its conical structure can gather the coolant, making it more convenient to gather and evenly disperse the coolant in each heat dissipation tube 9, thereby playing the function of gathering and dispersing the flow of the coolant.

[0055] Example 8

[0056] This embodiment is an improvement made on the basis of embodiment 7. For details, please refer to Figure 1-8Two groups of parallel heat conducting fins 28 are provided inside the heat dissipation pipe 9, and each group of parallel heat conducting fins 28 is arranged in a staggered manner.

[0057] When the coolant after heat conduction flows through the inside of the heat pipe 9, it will transfer the heat to the outside of the heat pipe 9, and then dissipate the heat through the fan. Through the action of the parallel heat conducting plates 28, the two groups of parallel heat conducting plates 28 are cross-combined and evenly arranged inside the heat pipe 9. When the coolant flows, it will flow through the parallel heat conducting plates 28 and fit with them throughout the whole process, which maximizes the cooling efficiency of the device and makes the heat conduction to the outside of the heat pipe 9 more thorough, thereby improving the thermal conductivity efficiency of the heat pipe 9.

[0058] Example 9

[0059] This embodiment is an improvement made on the basis of embodiment 8. For details, please refer to Figure 1-8 An axial flow fan 33 is also installed inside the heat dissipation box 7. A conical cavity is provided between every two heat dissipation tubes 9. The conical cavity is an inner cone guide groove 31. A diffusion arc surface 32 is provided on one side of the inner cone guide groove 31, and side arc surfaces 29 are provided on both sides of the heat dissipation tube 9.

[0060] When the axial flow fan 33 provides wind, it blows to the position of the inner cone guide groove 31. One end of the heat dissipation pipe 9 has a pointed structure, which cuts and diverts the airflow. Through the structural characteristics of the inner cone guide groove 31, the spacing of the side arc surfaces 29 is smaller than the inner cone guide groove 31. When the airflow enters, it will form a gathering state. When passing through the side arc surfaces 29, the airflow will be compressed, and the airflow velocity will be increased at the same time. The airflow becomes larger, thereby increasing the heat exported from the heat dissipation pipe 9 to be blown out and volatilized, thereby increasing the heat dissipation efficiency.

[0061] Example 10

[0062] This embodiment is an improvement made on the basis of embodiment 9. For details, please refer to Figure 1-8 , concave guide pits 30 are provided on both sides of one end of the heat dissipation pipe 9.

[0063] After the airflow is accelerated by the side arc surface 29 and the inner cone guide groove 31, it will vibrate when passing through the inside of the side arc surface 29, thereby causing noise and affecting use;

[0064] Through the action of the concave guide pit 30, when the airflow passes through the inner cone guide groove 31 area, the interior of the concave guide pit 30 is an arc-shaped structure, so that after the airflow enters the inner cone guide groove 31, it will contact the interior of the concave guide pit 30 and guide the airflow obliquely upward. Through the symmetrical arrangement of the two concave guide pits 30, the two airflows will contact at an angle. When in contact, because the two airflows are in oblique contact, the airflow will be pushed forward, avoiding excessive contact between the airflow and the outer surface of the side arc surface 29, causing vibration.

[0065] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An environmentally friendly waste plastic recycling granulator, comprising a machine base (1) and a mixing barrel (2) on the machine base (1), a feeding barrel (3) being mounted on the upper end of the mixing barrel (2), and a heating ring (4) being mounted on the outer side of the mixing barrel (2), characterized in that: An external shell (5) is installed at one end of the mixing barrel (2), a docking groove (23) is provided at one end of the mixing barrel (2), a connecting flange (6) is further provided at one end of the heating ring (4), the external shell (5) and the machine base (1) are fixed via the connecting flange (6), a heat dissipation shaping shell (13) is installed inside the external shell (5), an extension connecting pipe (17) is installed at one end of the heat dissipation shaping shell (13), a heat conductive inner layer (18) is installed inside the extension connecting pipe (17), a heat dissipation cavity (20) is provided on the inner wall of the external shell (5), a transverse heat conductive sheet (19) is provided on the inner wall of the heat conductive inner layer (18), a heat dissipation box (7) is installed at one end of the machine base (1), and a heat dissipation box (7) is installed inside. A heat dissipation pipe (9), a liquid inlet pipe (10) is installed at one end of the heat dissipation box (7), a liquid delivery shunt pipe (14) is provided on one side of the liquid inlet pipe (10), a return pipe (11) is installed at the other end of the heat dissipation box (7), a heat conduction fin (21) is provided on the outside of the heat conduction inner layer (18), the heat conduction fins (21) are arranged in a ring array inside the heat dissipation cavity (20), a pressure pump body (12) is installed on the outside of the liquid inlet pipe (10), a conical cavity is provided between every two heat dissipation pipes (9), the conical cavity is an inner cone guide groove (31), a diffusion arc surface (32) is provided on one side of the inner cone guide groove (31), side arc surfaces (29) are provided on both sides of the heat dissipation pipe (9), and a concave guide pit (30) is provided on both sides of one end of the heat dissipation pipe (9).

2. The environmentally friendly waste plastic recycling granulator according to claim 1, characterized in that: A heat exchange cavity (16) is provided inside the heat dissipation shaping shell (13), a shaping tube (24) is provided inside the heat exchange cavity (16), a flow tube hole (25) is provided inside the shaping tube (24), one end of the liquid inlet pipe (10) is connected to the heat exchange cavity (16), and a return liquid diversion pipe (15) is installed at the lower end of the heat dissipation shaping shell (13).

3. The environmentally friendly waste plastic recycling granulator according to claim 2, characterized in that: A spiral guide plate (26) is installed inside the heat exchange cavity (16), and the flow tube hole (25) is inserted into the spiral guide plate (26).

4. The environmentally friendly waste plastic recycling granulator according to claim 3, characterized in that: One end of the heat dissipation shaping shell (13) is provided with a limiting convergence edge (27), and the inner diameter of the end of the limiting convergence edge (27) is consistent with the inner diameter of the extension connection tube (17).

5. The environmentally friendly waste plastic recycling granulator according to claim 4, characterized in that: The outer surface of the transverse heat conducting plate (19) is provided with a limiting strip (22).

6. The environmentally friendly waste plastic recycling granulator according to claim 5, characterized in that: Cluster boxes (8) are installed at both ends of the heat dissipation tube (9), and the two ends of the heat dissipation tube (9) are connected to the liquid inlet pipe (10) and the return pipe (11) via the cluster boxes (8).

7. The environmentally friendly waste plastic recycling granulator according to claim 6, characterized in that: Two groups of parallel heat conducting fins (28) are provided inside the heat dissipation tube (9), and each group of parallel heat conducting fins (28) are arranged in a staggered manner.

8. The environmentally friendly waste plastic recycling granulator according to claim 7, characterized in that: An axial flow fan (33) is also installed inside the heat dissipation box (7).

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