Bottle flake recycling and granulating device with temperature detection function

Abstract

The invention discloses a bottle flake recovery and granulation device with a temperature detection function, and relates to the technical field of bottle flake granulation, the bottle flake recovery and granulation device comprises an extrusion mechanism, a cooling mechanism, a drying mechanism and a grain cutting mechanism, the extrusion mechanism, the cooling mechanism, the drying mechanism and the grain cutting mechanism are sequentially placed according to the conveying direction, the extruding mechanism comprises a feeding hopper, an extruding machine body, an extruding motor, a supporting frame, a screw rod and a temperature sensor, the feeding hopper is in fastening connection with the extruding machine body, the extruding machine body is in fastening connection with the supporting frame, the extruding motor is in fastening connection with the supporting frame, and the output end of the extruding motor is in fastening connection with the screw rod. The circulating flowing direction of the cooling liquid is opposite to the conveying direction of the plastic strips, the plastic strips make contact with the cooling liquid with the low temperature all the time on the way, the cooling efficiency is improved, the plastic strips are measured to be in different solidification states after entering the cooling liquid, the lifting air cylinder ascends and descends, and therefore the cooling path of the plastic strips is changed, and the cooling efficiency is improved. And the cooling efficiency of the plastic strips is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bottle flake granulation, and particularly relates to a bottle flake recycling granulation device with temperature detection function. BACKGROUND

[0002] Granulation is to prepare uniform granular plastics which are convenient for subsequent processing by melting, extruding, cutting and other processes of various forms of plastics. Granulators can be divided into two categories: cold cutting system and die face hot cutting system. The cold cutting system cuts the solidified polymer during the processing. The most commonly used granulator in the cold cutting system includes a die, a cooling section, a drying section and a cutting knife. The extruder or gear pump extrudes the molten polymer through a horizontally installed die to form a plastic strip. After the plastic strip is discharged from the die, it is cooled by water bath, and then the plastic strip is sent to the cutting chamber through a drying section.

[0003] During the water cooling process of the plastic strip, the plastic strip may be cooled before passing through the entire water tank, so that the remaining cooling path is actually a waste of resources. In addition, the structure of the water tank makes it difficult to effectively discharge the heat emitted by the plastic strip during cooling. The cooling path of the plastic strip is fixed, which is easy to cause local temperature aggregation and affect the overall cooling efficiency. SUMMARY

[0004] The present application aims to provide a bottle flake recycling granulation device with temperature detection function to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A bottle flake recycling granulation device with temperature detection function, the bottle flake recycling granulation device comprising an extrusion mechanism, a cooling mechanism, a drying mechanism and a cutting mechanism, the extrusion mechanism, the cooling mechanism, the drying mechanism and the cutting mechanism being placed in sequence according to the conveying direction.

[0006] The extrusion mechanism is used for melting the bottle flake into a fluid state, and then extruding the fluid into a plastic strip. The plastic strip enters the cooling mechanism, which is used for gradually solidifying the soft strip into a hard strip. The solidified plastic strip is drawn into the drying mechanism, which is used for blowing off the water on the surface of the plastic strip. The dried plastic strip enters the cutting mechanism, which is used for cutting the plastic strip into granular form.

[0007] Further, the extrusion mechanism comprises a feeding hopper, an extruder body, an extrusion motor, a support frame, a screw rod and a temperature sensor, the feeding hopper and the extruder body are fixedly connected, the feeding hopper is inserted into the extruder body, the extruder body and the support frame are fixedly connected, the extrusion motor and the support frame are fixedly connected, the output end of the extrusion motor and the screw rod are fixedly connected, and the temperature sensor is arranged in the extruder body.

[0008] The cleaned bottle pieces are placed in the feeding hopper, the bottle pieces enter the extruder body through the feeding hopper, the extruder body melts the bottle pieces in the interior through heating, the extrusion motor drives the screw rod to rotate through the output torque, the screw rod drives the molten plastic fluid to flow in the extrusion direction, the temperature sensor close to the discharge end detects the real-time temperature of the fluid to prevent the temperature from being too high or too low, and the support frame supports the extruder body to be higher than the cooling mechanism, so that the fluid extruded in the extruder body can fall into the cooling mechanism through gravity.

[0009] Further, the extruder body is provided with an extrusion hole located at the discharge end of the extruder body.

[0010] The extrusion hole is located at the discharge end of the extruder body, and the plastic fluid can be discharged from the extruder body through the extrusion hole and flow into the cooling mechanism.

[0011] Further, the cooling mechanism comprises a cooling assembly and a circulating assembly, the cooling assembly and the circulating assembly are in pipeline communication, and one end of the cooling assembly is arranged below the extrusion hole.

[0012] One end of the cooling assembly is arranged below the extrusion hole, so that the plastic strip flowing out of the extrusion hole enters the cooling assembly for cooling, the cooling assembly and the circulating assembly are in communication, the cooling liquid in the cooling assembly absorbs heat when cooling the plastic strip, and the heat is dissipated through the circulating assembly to circulate the cooling liquid in the cooling assembly.

[0013] Further, the cooling assembly comprises a water tank, a flow guide plate, a water outlet pipe and a water inlet pipe, the water tank is provided with the flow guide plate, the flow guide plate comprises two groups, the two groups of flow guide plates are symmetrically arranged in the water tank, the water tank is provided with the water outlet pipe and the water inlet pipe on one side, the water outlet pipe and the water inlet pipe are arranged on the side of the water tank close to the circulating assembly, the circulating assembly is in pipeline communication with the water outlet pipe and the water inlet pipe respectively, the water tank is provided with a cavity, the cavity is in pipeline communication with the water outlet pipe and the water inlet pipe respectively, and the water inlet pipe penetrates through the cavity.

[0014] The cooling liquid is placed in the water tank, the plastic strip flows into the cooling liquid from the upper extruder body, the water tank has a water outlet pipe at one end close to the extruder body and a water inlet pipe at the opposite end. Since the groove depth inside the cavity gradually increases from the water inlet pipe end to the water outlet pipe end, when the circulating assembly discharges the cooling liquid from the water inlet pipe, the cooling liquid flows in the direction of the water outlet pipe. Since the plastic strip is located in the middle of the water tank, the two guide plates are located on both sides of the plastic strip, so that the cooling liquid entering from the water inlet end flows from the middle of the guide plate and completely immerses the plastic strip, so that the plastic strip achieves the purpose of cooling. The cooling liquid absorbing the heat of the plastic strip enters the circulating assembly through the water outlet pipe to dissipate the heat, and the circulation continues.

[0015] Further, the cooling assembly further comprises a pressing rod, a lifting cylinder and a distance meter. The pressing rod is arranged between the two guide plates, the distance meter is arranged on one of the guide plates and located between the two guide plates, the water tank is fixedly connected with the lifting cylinder, and the lifting cylinder penetrates through the water tank.

[0016] When the plastic strip is in the water tank, the first part is arranged below the pressing rod, the second part is arranged above the lifting cylinder, and the last part is pulled by the drying mechanism. After the plastic strip enters the cooling liquid, it may be in different solidification states. When the pressing rod presses the plastic strip, the width of the plastic strip is measured by the distance meter to obtain the solidification degree of the plastic strip. The wider the plastic strip, the lower the solidification degree of the plastic strip. The lifting cylinder is lowered to delay the time when the plastic strip is pulled out of the water surface and prolong the cooling path. Conversely, the higher the lifting cylinder, the faster the time when the plastic strip is pulled out of the water surface and the shorter the cooling path. In this way, the cooling efficiency of the plastic strip can be further improved.

[0017] Further, the circulating assembly comprises a heat dissipation machine, a water pump, a first pipeline, a second pipeline and a third pipeline. The first pipeline is in communication with the water outlet pipe, the first pipeline is in communication with the water inlet end of the water pump, the water outlet end of the water pump is in communication with the second pipeline, the second pipeline is in communication with the heat dissipation machine, the heat dissipation machine is in communication with the third pipeline, and the third pipeline is in communication with the water inlet pipe.

[0018] Through the water pump, the communication between the first pipeline and the water outlet pipe, and the communication between the water pump and the second pipeline, the water pump discharges the cooling liquid from the water tank into the heat dissipation machine to dissipate the heat of the cooling liquid, thereby reducing the temperature of the cooling liquid. The cooled cooling liquid is discharged from the heat dissipation machine into the third pipeline and then delivered to the water inlet pipe through the third pipeline. Finally, the cooling liquid enters the water tank from the water inlet pipe to cool the plastic strip. Since the circulating flow direction of the cooling liquid is opposite to the conveying direction of the plastic strip, the plastic strip always contacts the cooling liquid with a lower temperature along the way, thereby improving the cooling efficiency.

[0019] Further, the drying mechanism comprises a drying body, a fan, a traction roller and a traction motor, the fan is arranged above the drying body, the drying body and the traction motor are fixedly connected, the traction motor output end and the traction roller are fixedly connected, the traction roller is arranged in the drying body, the traction roller and the drying body are rotationally connected, and the cutting mechanism is arranged on one side of the drying body in the discharging direction.

[0020] The traction motor output torque drives the traction roller to rotate, the solidified plastic strip enters the drying body under the traction of the rotating traction roller, and the fan above blows the moving plastic strip to dry, blows away the moisture on the plastic strip, and the moisture on the plastic strip that has not been blown dry flows back to the water tank along the slope, and the dried plastic strip enters the cutting mechanism.

[0021] Further, the cutting mechanism comprises a shell, a hob, a collection frame and a cutting motor, the shell and the cutting motor are fixedly connected, the cutting motor output end and the hob are fixedly connected, and the shell is provided with the collection frame on one side.

[0022] The dried plastic strip enters the shell from the drying body, the cutting motor output torque drives the hob to rotate, the hob cuts the moving plastic strip into particles, and the cut particles fall from the shell into the collection frame.

[0023] Further, the shell is internally provided with a channel, and the collection frame is provided with a collection opening.

[0024] The channel is located below the hob, and the cut particles can directly fall into the channel and slide into the collection frame through the collection opening.

[0025] Compared with the prior art, the beneficial effects of the present application are: 1. The plastic strip is in the middle of the water tank, the cooling liquid entering the middle position of the guide plate, and finally spreads to both sides, by adjusting the cooling area or changing the local temperature, the temperature of the area close to the plastic strip is the lowest, and since the cooling liquid circulation flow direction and the plastic strip conveying direction are opposite, the plastic strip is always in contact with the cooling liquid with lower temperature along the way, thereby improving the cooling efficiency; 2. The plastic strip is in different solidification states after entering the cooling liquid, the width of the plastic strip pressed by the pressing rod is measured by the distance measuring instrument to obtain the solidification degree of the plastic strip, the wider the plastic strip, the lower the solidification degree of the plastic strip, at this time, the lifting cylinder is lowered to delay the time when the plastic strip is pulled out of the water surface, thereby prolonging the cooling path, on the contrary, the solidification degree of the plastic strip is higher, the lifting cylinder is raised to speed up the time when the plastic strip is pulled out of the water surface, thereby reducing the cooling path, thereby further improving the cooling efficiency of the plastic strip. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the front view of the extrusion mechanism of the present invention; Figure 3 This is a top view of the cooling assembly of the present invention; Figure 4 for Figure 3 View AA is a sectional view; Figure 5 This is a schematic diagram of the structure of the circulation component of the present invention; Figure 6 This is a cross-sectional view of the front view of the drying mechanism of the present invention; Figure 7 This is a cross-sectional view of the front view of the pelletizing mechanism of the present invention.

[0027] In the diagram: 1. Extrusion mechanism; 11. Feeding hopper; 12. Extruder body; 121. Extrusion orifice; 13. Extrusion motor; 14. Support frame; 15. Screw rod; 16. Temperature sensor; 2. Cooling mechanism; 21. Cooling assembly; 211. Water tank; 2111. Cavity; 212. Guide plate; 213. Water outlet pipe; 214. Water inlet pipe; 215. Pressure rod; 216. Lifting cylinder; 217. Rangefinder; 22. Circulation assembly; 221. Radiator; 222. Water pump; 223. First pipe; 224. Second pipe; 225. Third pipe; 3. Drying mechanism; 31. Dryer body; 32. Fan; 33. Traction roller; 34. Traction motor; 4. Pelletizing mechanism; 41. Outer shell; 411. Channel; 42. Roller cutter; 43. Collection frame; 431. Collection port; 44. Pelletizing motor. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example: Figures 1-7 As shown, the present invention provides a technical solution for a bottle flake recycling and granulation device with temperature detection function.

[0030] like Figure 1 As shown, a bottle flake recycling and granulation device with temperature detection function is disclosed. The bottle flake recycling and granulation device includes an extrusion mechanism 1, a cooling mechanism 2, a drying mechanism 3, and a pelletizing mechanism 4, which are arranged in sequence according to the conveying direction.

[0031] The extrusion mechanism 1 is used for melting the bottle pieces into fluid, and then extruding the fluid into plastic strips. The plastic strips enter the cooling mechanism 2, which is used for gradually solidifying the soft strips into hard strips. The solidified plastic strips are pulled into the drying mechanism 3, which is used for blowing the moisture on the surface of the plastic strips. The dried plastic strips enter the pelletizing mechanism 4, which is used for cutting the plastic strips into particles.

[0032] As shown in Figures 1-2 The extrusion mechanism 1 includes a feeding hopper 11, an extruder body 12, an extrusion motor 13, a support frame 14, a screw rod 15, and a temperature sensor 16. The feeding hopper 11 and the extruder body 12 are fixedly connected. The feeding hopper 11 is inserted into the extruder body 12. The extruder body 12 and the support frame 14 are fixedly connected. The extrusion motor 13 and the support frame 14 are fixedly connected. The output end of the extrusion motor 13 and the screw rod 15 are fixedly connected. The temperature sensor 16 is arranged inside the extruder body 12 and is close to the discharge end of the extruder body 12.

[0033] The cleaned bottle pieces are put into the feeding hopper 11. The bottle pieces enter the extruder body 12 through the feeding hopper 11. The bottle pieces inside the extruder body 12 are melted by heating. The output torque of the extrusion motor 13 drives the screw rod 15 to rotate. The screw rod 15 drives the melted plastic fluid to be transported in the extrusion direction. When the plastic fluid is extruded through the outlet, the temperature sensor 16 close to the discharge end detects the real-time temperature of the fluid to prevent the temperature from being too high or too low. The support of the support frame 14 makes the extruder body 12 higher than the cooling mechanism 2, so that the fluid extruded from the extruder body 12 can fall into the cooling mechanism 2 by gravity.

[0034] As shown in Figure 2 The extruder body 12 is provided with an extrusion hole 121, which is located at the discharge end of the extruder body 12.

[0035] The extrusion hole 121 is located at the discharge end of the extruder body 12. The plastic fluid can be discharged from the extruder body 12 through the extrusion hole 121 and flow into the cooling mechanism 2.

[0036] As shown in Figure 1 The cooling mechanism 2 includes a cooling assembly 21 and a circulation assembly 22. The cooling assembly 21 and the circulation assembly 22 are in pipeline communication. One end of the cooling assembly 21 is arranged below the extrusion hole 121.

[0037] One end of the cooling assembly 21 is arranged below the extrusion hole 121, so that the plastic strips flowing out of the extrusion hole 121 enter the cooling assembly 21 for cooling. The cooling assembly 21 and the circulation assembly 22 are in communication. The cooling liquid in the cooling assembly 21 absorbs heat when cooling the plastic strips. The heat is dissipated through the circulation assembly 22 to circulate the cooling liquid in the cooling assembly 21.

[0038] AsFigures 3-4 As shown, the cooling assembly 21 comprises a water tank 211, a flow guide plate 212, a water outlet pipe 213 and a water inlet pipe 214. The water tank 211 is internally provided with the flow guide plate 212. The flow guide plate 212 is provided with two groups. The two groups of flow guide plates 212 are symmetrically arranged in the water tank 211. The water tank 211 is provided with the water outlet pipe 213 and the water inlet pipe 214 on one side. The water outlet pipe 213 and the water inlet pipe 214 are arranged on the side of the water tank 211 close to the circulating assembly 22. The circulating assembly 22 is in pipeline communication with the water outlet pipe 213 and the water inlet pipe 214 respectively. The water tank 211 is internally provided with a cavity 2111. The cavity 2111 is in pipeline communication with the water outlet pipe 213 and the water inlet pipe 214 respectively. The water inlet pipe 214 penetrates the cavity 2111.

[0039] The cooling liquid is arranged in the water tank 211. The plastic strip flows into the cooling liquid from the upper extruder body 12. The water tank 211 is provided with the water outlet pipe 213 on one end close to the extruder body 12 and the water inlet pipe 214 on the other end away from the extruder body 12. Since the groove depth in the cavity 2111 gradually increases from the water inlet pipe 214 end to the water outlet pipe 213 end, when the circulating assembly 22 discharges the cooling liquid from the water inlet pipe 214, the cooling liquid flows in the direction of the water outlet pipe 213. Since the plastic strip is arranged in the middle of the water tank 211, the two flow guide plates 212 are arranged on both sides of the plastic strip. Therefore, the cooling liquid entering from the water inlet end flows from the middle of the flow guide plate 212 and completely immerses the plastic strip, so that the plastic strip achieves the purpose of cooling. The cooling liquid absorbing the heat of the plastic strip enters the circulating assembly 22 through the water outlet pipe 213 to dissipate the heat, and thus circulates.

[0040] As shown, Figures 3-4 The cooling assembly 21 further comprises a pressing rod 215, a lifting cylinder 216 and a distance meter 217. The pressing rod 215 is arranged between the two groups of flow guide plates 212. The distance meter 217 is arranged on one group of flow guide plates 212 and between the two groups of flow guide plates 212. The water tank 211 is fastened to the lifting cylinder 216. The lifting cylinder 216 penetrates the water tank 211.

[0041] When the plastic strip is in the water tank 211, it is first arranged below the pressing rod 215, then arranged above the lifting cylinder 216, and finally pulled by the drying mechanism 3. The plastic strip may be in different solidification states after entering the cooling liquid. When the pressing rod 215 presses the plastic strip, the width of the plastic strip is measured by the distance meter 217 to obtain the solidification degree of the plastic strip. The wider the plastic strip, the lower the solidification degree of the plastic strip. At this time, the lifting cylinder 216 is lowered to delay the time when the plastic strip is pulled out of the water surface, thereby prolonging the cooling path. Conversely, the higher the solidification degree of the plastic strip, the higher the lifting cylinder 216 is raised to accelerate the time when the plastic strip is pulled out of the water surface, thereby reducing the cooling path. In this way, the cooling efficiency of the plastic strip can be further improved.

[0042] As shown, Figure 5As shown, the circulating assembly 22 comprises a radiator 221, a water pump 222, a first pipe 223, a second pipe 224 and a third pipe 225, the first pipe 223 and the water outlet pipe 213 are in pipe communication, the first pipe 223 and the water inlet end of the water pump 222 are in pipe communication, the water outlet end of the water pump 222 and the second pipe 224 are in pipe communication, the second pipe 224 and the radiator 221 are in pipe communication, the radiator 221 and the third pipe 225 are in pipe communication, and the third pipe 225 and the water inlet pipe 214 are in pipe communication.

[0043] Through the water pump 222 and the first pipe 223, the communication of the first pipe 223 and the water outlet pipe 213, and the communication of the water pump 222 and the second pipe 224, the water pump 222 pumps the cooling liquid from the water tank 211 into the radiator 221, and the cooling liquid containing heat is radiated to reduce the temperature of the cooling liquid. The cooled cooling liquid is discharged from the radiator 221 into the third pipe 225 and then transported to the water inlet pipe 214 through the third pipe 225, and finally enters the water tank 211 from the water inlet pipe 214 to cool the plastic strip. Since the cooling liquid circulating flow direction is opposite to the plastic strip conveying direction, the plastic strip is always in contact with the cooling liquid with lower temperature along the way, thereby improving the cooling efficiency.

[0044] As shown in Figure 6 The drying mechanism 3 comprises a drying body 31, a fan 32, a traction roller 33 and a traction motor 34. The fan 32 is arranged above the drying body 31, the drying body 31 and the traction motor 34 are fixedly connected, the output end of the traction motor 34 and the traction roller 33 are fixedly connected, the traction roller 33 is arranged inside the drying body 31, and the traction roller 33 and the drying body 31 are rotatably connected. The cutting mechanism 4 is arranged on one side of the drying body 31 in the discharging direction.

[0045] The traction motor 34 drives the traction roller 33 to rotate, and the solidified plastic strip enters the drying body 31 under the traction of the rotating traction roller 33. The fan 32 above blows the moving plastic strip to dry it. Since the path of the plastic strip in the drying body 31 gradually rises along the conveying direction, the water on the plastic strip that is not dried will flow back to the water tank 211 along the slope, and the dried plastic strip enters the cutting mechanism 4.

[0046] As shown in Figure 7 The cutting mechanism 4 comprises an outer shell 41, a hob 42, a collection frame 43 and a cutting motor 44. The outer shell 41 and the cutting motor 44 are fixedly connected, the output end of the cutting motor 44 and the hob 42 are fixedly connected, and the collection frame 43 is arranged on one side of the outer shell 41.

[0047] After drying, the plastic strip enters the outer shell 41 from the dryer body 31. The pelletizing motor 44 outputs torque to drive the roller cutter 42 to rotate. The roller cutter 42 cuts the moving plastic strip into granules. The granules fall from the outer shell 41 into the collection frame 43.

[0048] like Figure 7 As shown, the housing 41 has a channel 411 inside, and the collection frame 43 has a collection port 431 with the opening facing the channel 411.

[0049] Channel 411 is located below the roller cutter 42. The cut particles can fall directly into channel 411 and slide directly into collection frame 43 through collection port 431.

[0050] Working principle of the invention: Bottle flakes enter the extruder body 12 through the feeding hopper 11. The screw 15 drives the molten plastic fluid in the extrusion direction. As the plastic fluid is extruded through the outlet, the temperature sensor 16 monitors the fluid temperature in real time to prevent it from becoming too hot or too cold. The plastic strip extruded from the extrusion orifice 121 flows into the coolant in the water tank 211. The coolant flows through the middle of the guide plate 212 and completely submerges the plastic strip, cooling it. The heat-absorbing coolant then enters the circulation component 22 through the outlet pipe 213 to dissipate heat. Since the coolant circulation direction is opposite to the plastic strip conveying direction, the plastic strip is always in contact with the cooler coolant along the way, improving cooling efficiency. The plastic strip is in different solidification states after entering the coolant. When the pressure bar 215 presses down on the plastic strip, the width of the plastic strip is measured by the rangefinder 217 to obtain the degree of solidification of the plastic strip. The wider the plastic strip, the lower the degree of solidification. At this time, the lifting cylinder 216 is lowered to delay the time when the plastic strip is pulled out of the water and extend the cooling path. Conversely, the wider the plastic strip, the higher the degree of solidification. The lifting cylinder 216 is raised to speed up the time when the plastic strip is pulled out of the water and reduce the cooling path. This can further improve the cooling efficiency of the plastic strip. Then the solidified plastic strip enters the dryer body 31 through the traction roller 33. After being dried by the fan 32, the plastic strip enters the outer shell 41. The roller cutter 42 cuts the plastic strip into granules. The granules fall from the outer shell 41 into the collection frame 43.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bottle flake recycling and pelletizing apparatus with temperature detection function, characterized by: The bottle piece recycling granulation device comprises an extrusion mechanism (1), a cooling mechanism (2), a drying mechanism (3) and a cutting mechanism (4), which are placed in sequence according to the conveying direction.

2. The bottle flake recycling and pelletizing apparatus with temperature detection function according to claim 1, characterized in that: The extrusion mechanism (1) comprises a feeding hopper (11), an extruder body (12), an extrusion motor (13), a support frame (14), a screw rod (15) and a temperature sensor (16), the feeding hopper (11) and the extruder body (12) are tightly connected, the feeding hopper (11) is inserted into the extruder body (12), the extruder body (12) and the support frame (14) are tightly connected, the extrusion motor (13) and the support frame (14) are tightly connected, the output end of the extrusion motor (13) and the screw rod (15) are tightly connected, and the temperature sensor (16) is arranged inside the extruder body (12) and close to the discharging end of the extruder body (12).

3. The bottle flake recycling and pelletizing apparatus with temperature detection function according to claim 2, characterized in that: The extruder body (12) is provided with an extrusion hole (121) located at the discharging end of the extruder body (12).

4. The bottle flake recycling and pelletizing apparatus with temperature detection function according to claim 3, characterized in that: The cooling mechanism (2) comprises a cooling assembly (21) and a circulating assembly (22), the cooling assembly (21) and the circulating assembly (22) are in pipeline communication, and one end of the cooling assembly (21) is arranged below the extrusion hole (121).

5. The bottle flake recycling and pelletizing apparatus with temperature detection function according to claim 4, characterized in that: The cooling assembly (21) comprises a water tank (211), a flow guide plate (212), a water outlet pipe (213) and a water inlet pipe (214), the water tank (211) is provided with the flow guide plate (212) inside, the flow guide plate (212) is provided with two groups, the two groups of flow guide plates (212) are symmetrically arranged in the water tank (211), one side of the water tank (211) is provided with the water outlet pipe (213) and the water inlet pipe (214), the water outlet pipe (213) and the water inlet pipe (214) are arranged on the side of the water tank (211) close to the circulating assembly (22), the circulating assembly (22) is in pipeline communication with the water outlet pipe (213) and the water inlet pipe (214) respectively, the water tank (211) is provided with a cavity (2111) inside, the cavity (2111) is in pipeline communication with the water outlet pipe (213) and the water inlet pipe (214) respectively, and the water inlet pipe (214) penetrates through the cavity (2111).

6. The bottle flake recycling and pelletizing apparatus with temperature detection function according to claim 5, characterized in that: The cooling assembly (21) further comprises a pressing rod (215), a lifting cylinder (216) and a distance meter (217), the pressing rod (215) is arranged between the two groups of flow guide plates (212), the distance meter (217) is arranged on one group of flow guide plates (212), the distance meter (217) is arranged between the two groups of flow guide plates (212), the water tank (211) and the lifting cylinder (216) are tightly connected, and the lifting cylinder (216) penetrates through the water tank (211).

7. The bottle flake recycling and pelletizing apparatus with temperature detection function according to claim 6, characterized in that: The circulating assembly (22) comprises a radiator (221), a water pump (222), a first pipeline (223), a second pipeline (224) and a third pipeline (225), the first pipeline (223) and the water outlet pipeline (213) are in pipeline communication, the first pipeline (223) and the water inlet end of the water pump (222) are in pipeline communication, the water outlet end of the water pump (222) and the second pipeline (224) are in pipeline communication, the second pipeline (224) and the radiator (221) are in pipeline communication, the radiator (221) and the third pipeline (225) are in pipeline communication, and the third pipeline (225) and the water inlet pipeline (214) are in pipeline communication.

8. The bottle flake recycling and pelletizing apparatus with temperature detection function according to claim 7, characterized in that: The drying mechanism (3) comprises a drying machine body (31), a fan (32), a traction roller (33) and a traction motor (34), the fan (32) is arranged above the drying machine body (31), the drying machine body (31) and the traction motor (34) are in fastening connection, the output end of the traction motor (34) and the traction roller (33) are in fastening connection, the traction roller (33) is arranged in the drying machine body (31), the traction roller (33) and the drying machine body (31) are in rotary connection, and the pelletizing mechanism (4) is arranged on one side of the discharging direction of the drying machine body (31).

9. The bottle flake recycling and pelletizing apparatus with temperature detection function according to claim 8, characterized in that: The pelletizing mechanism (4) comprises an outer shell (41), a hob (42), a collecting frame (43) and a pelletizing motor (44), the outer shell (41) and the pelletizing motor (44) are in fastening connection, the output end of the pelletizing motor (44) and the hob (42) are in fastening connection, and one side of the outer shell (41) is provided with the collecting frame (43).

10. The bottle flake recycling and pelletizing apparatus with temperature detection function according to claim 9, characterized in that: The outer shell (41) is internally provided with a channel (411), the collecting frame (43) is provided with a collecting opening (431), and the collecting opening (431) is open towards the channel (411).

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