PET (Polyethylene Terephthalate) crushed material modification device
By using a stirring component, a mixing component, and a ventilation component in the PET scrap modification device, the problems of uneven modification and low stability of PET scrap were solved, and a more efficient modification effect was achieved.
Patent Information
- Application Number
- CN202511777908.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-01-23
AI Technical Summary
During the large-scale modification process of PET scraps, the modification effect is difficult to be uniform, resulting in low stability.
The mixing component thoroughly stirs the materials inside the tank, the mixing component mixes the additives into the materials, the ventilation component improves the gas environment, and the gas inside the tank is treated by the air pump and the drying chamber to reduce the impact of oxygen.
It improves the uniformity and stability of PET scrap modification, enhances the mechanical properties of the material, and reduces the impact of oxygen on the modification process.
Smart Images
Figure CN121374886A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of PET plastic waste recycling, and in particular to a PET scrap material modification device. BACKGROUND
[0002] At present, the modification of PET scrap material is mainly realized through chemical modification and physical modification. The chemical modification usually involves adding modifiers or performing chemical reactions, and the physical modification improves the performance of PET through heating, melting, blending, extruding and granulating.
[0003] For the related technologies in the above, the inventors find that when a large amount of PET scrap material needs to be modified, the modification effect of the PET scrap material is difficult to be uniform, resulting in very low stability of the final modification of the PET scrap material, and thus needs to be improved. SUMMARY
[0004] In order to improve the uniformity and stability of the modification of the PET scrap material, the application provides a PET scrap material modification device.
[0005] The PET scrap material modification device provided by the application adopts the following technical scheme: A PET scrap material modification device, comprising a barrel body and a feeding pipe communicated with the top of the barrel body, wherein a feeding valve is arranged on the feeding pipe; a discharging pipe is communicated with the bottom of the barrel body, and a discharging valve is arranged on the discharging pipe; a stirring assembly for stirring the material is arranged on the barrel body; a mixing assembly for mixing additives is arranged on the barrel body; and a gas exchange assembly is arranged on the barrel body to improve the gas environment inside the barrel body.
[0006] Through the above technical scheme, the stirring assembly fully stirs the material inside the barrel body, the mixing assembly mixes the additives and other mixing agents into the material, further improving the mechanical properties such as tensile strength, bending strength and impact strength of the material, the gas exchange assembly improves the gas environment inside the barrel body, reduces the influence of oxygen in the air on the modification process of the material, and thus improves the uniformity and stability of the modification of the PET scrap material.
[0007] Preferably, the stirring assembly comprises a stirring shaft, a stirring rod, a material guide cylinder, a support rod, a stirring paddle and a stirring motor; the stirring shaft is rotatably arranged on the barrel body, the stirring rod is arranged on the stirring shaft, the material guide cylinder is arranged inside the barrel body, and the stirring shaft is located inside the material guide cylinder; the support rod is arranged between the material guide cylinder and the inner bottom wall of the barrel body to support the material guide cylinder; the stirring paddle is arranged in a spiral shape on the peripheral wall of the stirring shaft along the length direction of the stirring shaft; and the stirring motor is arranged on the barrel body to drive the stirring shaft to rotate.
[0008] By adopting the above technical scheme, the stirring motor drives the stirring shaft, the stirring rod and the stirring paddle to rotate, the stirring rod stirs and mixes the materials in the barrel body, the rotating stirring paddle guides the materials at the bottom of the barrel body to flow towards the top of the barrel body, the materials at the top region of the barrel body and the materials at the bottom region of the barrel body are mixed with each other, the phenomenon that the materials at the top of the barrel body and the materials at the bottom are not mixed is reduced, and the mixing uniformity and the mixing efficiency of the materials in each part of the barrel body are improved.
[0009] Preferably, the mixing assembly comprises a mixing cylinder, a feeding pipe, a mixing shaft, a mixing paddle, a mixing motor, a fixing frame and a lifting member; the mixing cylinder is slidably arranged on the barrel body, and a plurality of groups of mixing holes are formed in the bottom of the mixing cylinder; the feeding pipe is communicatively arranged on the top of the mixing cylinder; the mixing shaft is rotatably arranged in the mixing cylinder; the mixing paddle is helically arranged on the peripheral wall of the mixing shaft along the length direction of the mixing shaft; the mixing motor is arranged on the mixing cylinder and used to drive the mixing shaft to rotate; the fixing frame is arranged on the top of the barrel body; and the lifting member is arranged on the fixing frame and used to drive the mixing cylinder to move up and down.
[0010] By adopting the above technical scheme, the mixing agent is introduced into the mixing cylinder through the feeding pipe, the mixing motor drives the mixing shaft to drive the mixing paddle to rotate, the mixing paddle applies pressure to the mixing agent, the phenomenon that the materials in the barrel body are pressed into the mixing cylinder through the mixing holes is reduced, and the mixing agent is quickly driven towards the bottom of the mixing cylinder to be discharged to the materials in the barrel body through the mixing holes for mixing; the output end of the lifting member drives the mixing cylinder to move up and down to adjust the feeding position of the mixing agent in the barrel body, and the mixing efficiency and the uniformity of the mixing agent and the materials are improved.
[0011] Preferably, the barrel body is internally provided with a cleaning assembly used to clean the materials adhered to the peripheral wall of the mixing cylinder.
[0012] By adopting the above technical scheme, the cleaning assembly cleans the materials adhered to the outer surface of the mixing cylinder, and the phenomenon that the materials interfere with the up-and-down movement of the mixing cylinder is reduced.
[0013] Preferably, the cleaning assembly comprises a rotating ring, a material blocking ring plate, a cleaning scraper, a transmission gear ring, a driving gear and a driving motor; the rotating ring is rotatably arranged in the barrel body, and the mixing cylinder is located in the rotating ring; the material blocking ring plate is arranged on the side wall of the rotating ring away from the mixing motor; the cleaning scraper is arranged on the side wall of the material blocking ring plate away from the rotating ring, all the cleaning scrapers are spacedly distributed around the mixing cylinder, and each cleaning scraper abuts against the peripheral wall of the mixing cylinder; the transmission gear ring is sleeved on the rotating ring, and the transmission gear ring is located on the side of the material blocking ring plate facing the rotating ring; the driving gear is rotatably arranged in the barrel body, and the transmission gear ring and the driving gear are in meshing connection; and the driving motor is arranged on the barrel body and used to drive the driving gear to rotate.
[0014] By adopting the technical scheme, the driving motor drives the rotating ring and the cleaning scraper to rotate at high speed through the driving gear and the transmission gear ring, the rotating cleaning scraper cleans the material adhering to the outer surface of the mixing barrel, the material blocking ring plate reduces the phenomenon of material flowing into the space between the driving gear and the transmission gear ring, and the rotating cleaning scraper drives the material adhering to the cleaning scraper to quickly separate from the cleaning scraper under the action of the centrifugal force of the high-speed rotation of the cleaning scraper and reflows into the barrel body, thereby reducing the waste of the material.
[0015] Preferably, the ventilation assembly comprises an exhaust pipe, an exhaust pump, a gas supply pipe and a gas supply pump; the exhaust pipe is communicatively arranged on the barrel body, the exhaust pump is communicatively arranged on the exhaust pipe to suck air in the barrel body, the gas supply pipe is communicatively arranged on the barrel body to supply nitrogen, and the gas supply pump is communicatively arranged on the gas supply pipe to transport nitrogen to the barrel body.
[0016] By adopting the technical scheme, the exhaust pump and the exhaust pipe cooperate with each other to suck and discharge the air in the barrel body, and the gas supply pipe and the gas supply pump cooperate with each other to transport nitrogen to the barrel body, so that the nitrogen gradually fills the barrel body to replace the air and reduce the phenomenon of color change of the material in the barrel body due to contact with oxygen.
[0017] Preferably, the barrel body is provided with a heating bin in communication with the gas supply pipe, a plurality of groups of air holes are formed through the side wall of the heating bin away from the gas supply pipe, and a heating member for heating nitrogen is arranged in the heating bin.
[0018] By adopting the technical scheme, the heating member heats the nitrogen introduced into the barrel body to two hundred degrees Celsius, so that the heated nitrogen increases the viscosity of the material in the barrel body.
[0019] Preferably, a temperature measuring member for detecting temperature data of the nitrogen is arranged in the heating bin, a detection member for detecting concentration data of the nitrogen in the barrel body is arranged on the barrel body, and a control member electrically connected with the temperature measuring member, the detection member, the gas supply pump and the heating member is arranged on the barrel body; the control member is used to receive the temperature data and the concentration data, and when the temperature data is lower than a preset value, the control member controls the heating member to increase the heating power; and when the concentration data is lower than a preset value, the control member controls the gas supply pump to increase the gas supply power.
[0020] By adopting the technical scheme, the control member, the temperature measuring member, the detection member, the gas supply pump and the heating member cooperate with each other to automatically regulate and control the temperature of the nitrogen and the concentration of the nitrogen in the barrel body.
[0021] As preferred, the barrel body is provided with a drying box, a suction pipe is communicated between the drying box and the barrel body, an air suction pump is communicated on the suction pipe, for sucking the air inside the barrel body into the drying box, a back air pipe is communicated on the side wall of the drying box away from the air suction pump, for being communicated with the inside of the barrel body, a sponge body is arranged inside the drying box, for absorbing water vapor, a collecting box is communicated on the bottom of the drying box, and a drying piece is arranged inside the collecting box, for absorbing water vapor.
[0022] By using the above technical scheme, the air suction pump and the suction pipe suck the air inside the barrel body into the drying box, the sponge body and the drying piece dry the air, and the dried air is introduced into the barrel body through the back air pipe, so that the inside of the barrel body is dehumidified and dried.
[0023] As preferred, the drying box is provided with a fixed net rack, the fixed net rack is located on the side of the sponge body facing the back air pipe, the bottom of the fixed net rack is provided with a gas blocking plate inserted into the drying piece, and the side wall of the gas blocking plate is matched with the inner side wall of the drying box; the side wall of the sponge body away from the fixed net rack is slidably provided with a squeezing net plate, and the side wall of the squeezing net plate facing the suction pipe is provided with a push rod exposed to the drying box.
[0024] By using the above technical scheme, the staff drives the push rod to slide, so that the squeezing net plate squeezes the sponge body towards the fixed net rack to squeeze out the water in the sponge body, so as to ensure the water absorption of the sponge body; and when the sponge body absorbs a certain amount of water to affect the air introduced by the suction pipe to pass through the sponge body into the back air pipe, the air pressure on the side of the squeezing net plate away from the sponge body gradually increases, and the squeezing net plate is automatically pushed and the sponge body is automatically squeezed.
[0025] In summary, the present application has at least one of the following beneficial technical effects: 1. The stirring assembly is arranged to fully stir the material inside the barrel body, the mixing assembly mixes the additive into the material, further improving the mechanical properties such as tensile strength, bending strength and impact strength of the material, the air exchange assembly improves the gas environment inside the barrel body, reduces the influence of oxygen in the air on the material modification process, and further improves the uniformity and stability of the PET scrap material modification; 2. The cleaning assembly is arranged to clean the material adhered to the outer surface of the mixing cylinder, reducing the phenomenon of material interfering with the lifting movement of the mixing cylinder; 3. The air suction pump and the suction pipe are arranged to suck the air inside the barrel body into the drying box, the sponge body and the drying piece dry the air, and the dried air is introduced into the barrel body through the back air pipe, so that the inside of the barrel body is dehumidified and dried. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 is a structural schematic diagram of a PET scrap material modification device according to an embodiment of the present application.
[0027] Figure 2 is a sectional schematic diagram for embodying the internal structure of the barrel.
[0028] Figure 3 is a structural schematic diagram for embodying the connection relationship between the cleaning assembly and the mixing cylinder.
[0029] Figure 4 is a sectional schematic diagram for embodying the connection relationship between the heating bin and the air supply pipe.
[0030] Figure 5 is a sectional schematic diagram for embodying the internal structure of the drying box.
[0031] BRIEF DESCRIPTION OF THE DRAWINGS 1, barrel; 11, feed pipe; 111, feed valve; 12, discharge pipe; 121, discharge valve; 13, heating bin; 131, air hole; 132, heating element; 2, stirring assembly; 21, stirring shaft; 22, stirring rod; 23, guide cylinder; 24, support rod; 25, stirring paddle; 26, stirring motor; 3, mixing assembly; 31, mixing cylinder; 311, mixing hole; 32, feeding pipe; 33, mixing shaft; 34, mixing paddle; 35, mixing motor; 36, fixing frame; 37, lifting element; 4, cleaning assembly; 41, rotating ring; 42, material blocking ring plate; 43, cleaning scraper; 44, transmission gear ring; 45, driving gear; 46, driving motor; 5, air exchange assembly; 51, exhaust pipe; 52, exhaust pump; 53, air supply pipe; 54, air supply pump; 6, control element; 61, temperature measuring element; 62, detection element; 7, drying box; 71, air suction pump; 711, suction pipe; 72, air return pipe; 73, sponge body; 74, collection box; 741, drying element; 75, fixed net rack; 751, air blocking plate; 76, extrusion net plate; 761, pushing rod. DETAILED DESCRIPTION
[0032] The following will be described in detail below with reference to the accompanying drawings. Figures 1-5 The present application will be further described in detail.
[0033] The present application discloses a PET scrap material modification device for improving the uniformity and stability of PET scrap material modification.
[0034] Reference will be made to Figure 1 and Figure 2The PET scrap material modification device comprises a barrel 1, a feeding pipe 11 communicated and installed on the top of the barrel 1, a feeding valve 111 fixedly installed on the feeding pipe 11, a discharging pipe 12 communicated and installed on the bottom of the barrel 1, and a discharging valve 121 fixedly installed on the discharging pipe 12.
[0035] With reference to Figure 1 and Figure 2 , the stirring assembly 2 comprises a stirring shaft 21, a stirring rod 22, a guide cylinder 23, a support rod 24, a stirring paddle 25 and a stirring motor 26; the stirring shaft 21 is rotatably installed on the barrel 1 through a bearing, and the length direction of the stirring shaft 21 is parallel to the height direction of the barrel 1. The stirring rod 22 is fixedly installed on the peripheral wall of the stirring shaft 21, the stirring motor 26 is fixedly installed on the top of the barrel 1, and the output end of the stirring motor 26 is in transmission connection with the stirring shaft 21, so as to drive the stirring shaft 21 to rotate.
[0036] With reference to Figure 1 and Figure 2 , the support rod 24 is spacedly installed on the bottom wall in the barrel 1 around the discharging pipe 12, the guide cylinder 23 is fixedly installed on all the support rods 24, and the stirring shaft 21 is located in the guide cylinder 23. The stirring paddle 25 is fixedly installed on the peripheral wall of the stirring shaft 21 in a spiral shape along the length direction of the stirring shaft 21, and the stirring paddle 25 abuts against the inner peripheral wall of the guide cylinder 23, so as to guide the material at the bottom of the barrel 1 to flow towards the top of the barrel 1.
[0037] With reference to Figure 2 and Figure 3 , the mixing assembly 3 comprises a mixing cylinder 31, a feeding pipe 32, a mixing shaft 33, a mixing paddle 34, a mixing motor 35, a fixing frame 36 and a lifting piece 37; in the embodiment, the lifting piece 37 is a hydraulic cylinder. The fixing frame 36 is fixedly installed on the top of the barrel 1, the lifting piece 37 is fixedly installed on the fixing frame 36 along the vertical direction, the mixing cylinder 31 is fixedly installed on the output end of the lifting piece 37, and the feeding pipe 32 is communicated and installed on the top of the mixing cylinder 31, so as to feed the mixed agent such as glass fiber and toughening agent into the mixing cylinder 31. The end of the mixing cylinder 31 away from the lifting piece 37 penetrates into the barrel 1 along the height direction of the barrel 1, and the bottom of the mixing cylinder 31 is provided with a plurality of groups of mixing holes 311, so as to penetrate into the material in the barrel 1.
[0038] With reference to Figure 2 and Figure 3The mixing shaft 33 is rotatably installed inside the mixing cylinder 31 along the length direction of the mixing cylinder 31, the mixing blades 34 are fixedly installed on the peripheral wall of the mixing shaft 33 along the length direction of the mixing shaft 33 in a spiral shape, and the peripheral wall of the mixing blades 34 is in close contact with the inner peripheral wall of the mixing cylinder 31. The mixing motor 35 is fixedly installed on the top of the mixing cylinder 31, and the output end of the mixing motor 35 is in transmission connection with the mixing shaft 33, so as to drive the mixing shaft 33 to rotate.
[0039] With reference to Figure 2 and Figure 3 , the cleaning assembly 4 for cleaning the material on the peripheral wall of the mixing cylinder 31 is installed inside the barrel 1, and the cleaning assembly 4 comprises a rotating ring 41, a material blocking ring plate 42, a cleaning scraper 43, a transmission gear ring 44, a driving gear 45 and a driving motor 46. The rotating ring 41 is rotatably installed inside the barrel 1, and the mixing cylinder 31 is located inside the rotating ring 41; the transmission gear ring 44 is fixedly sleeved on the peripheral wall of the rotating ring 41, and the driving gear 45 is rotatably installed inside the barrel 1. The driving motor 46 is fixedly installed on the top of the barrel 1, the driving gear 45 is fixedly sleeved on the output end of the driving motor 46, and the transmission gear ring 44 is in meshing connection with the driving gear 45, so as to drive the transmission gear ring 44 and the rotating ring 41 to rotate through the driving gear 45.
[0040] With reference to Figure 2 and Figure 3 , the material blocking ring plate 42 is fixedly installed on the side wall of the rotating ring 41 away from the mixing motor 35, and the material blocking ring plate 42 is located on the side of the transmission gear ring 44 away from the mixing motor 35. The cleaning scraper 43 is fixedly installed on the side wall of the material blocking ring plate 42 away from the rotating ring 41, all the cleaning scrapers 43 are distributed at intervals around the mixing cylinder 31, and each group of cleaning scrapers 43 abuts against the peripheral wall of the mixing cylinder 31, so as to scrape off the material adhered to the peripheral wall of the mixing cylinder 31.
[0041] With reference to Figure 1 and Figure 4 , the air exchange assembly 5 comprises an exhaust pipe 51, an exhaust pump 52, a gas supply pipe 53 and a gas supply pump 54; the exhaust pipe 51 is communicatively installed on the top wall of the barrel 1, and the exhaust pump 52 is communicatively installed on the exhaust pipe 51, so as to suck the air inside the barrel 1. The gas supply pipe 53 is communicatively installed on the top wall of the barrel 1, so as to supply nitrogen gas; and the gas supply pump 54 is communicatively installed on the gas supply pipe 53, so as to cooperate with the gas supply pipe 53 to transport the nitrogen gas towards the inside of the barrel 1.
[0042] With reference to Figure 1 and Figure 4The barrel body 1 is internally provided with a heating bin 13 communicated with the air supply pipe 53. The side wall of the heating bin 13 away from the air supply pipe 53 is provided with a plurality of groups of air holes 131. The heating bin 13 is internally provided with a heating element 132 for heating nitrogen. In the embodiment, the heating element 132 is an electric heating wire for rapidly heating nitrogen passing through the heating bin 13.
[0043] With reference to Figure 1 and Figure 4 The heating bin 13 is internally provided with a temperature measuring element 61 for detecting the temperature data of nitrogen in the heating bin 13. In the embodiment, the temperature measuring element 61 is a temperature measuring ring. The barrel body 1 is provided with a detection element 62 for detecting the concentration data of nitrogen in the barrel body 1. Specifically, the detection element 62 is a nitrogen concentration detector.
[0044] With reference to Figure 1 and Figure 4 The barrel body 1 is externally provided with a control element 6 electrically connected with the temperature measuring element 61, the detection element 62, the air supply pump 54 and the heating element 132. Specifically, the control element 6 can be a single-chip microcomputer controller. The control element 6 is used for receiving temperature data and concentration data. When the temperature data is lower than a preset value, the control element 6 controls the heating element 132 to increase the heating power. When the concentration data is lower than a preset value, the control element 6 controls the air supply pump 54 to increase the air supply power.
[0045] With reference to Figure 1 and Figure 5 One side of the barrel body 1 is provided with a drying box 7. The drying box 7 and the barrel body 1 are communicated with a suction pipe 711. The suction pipe 711 is provided with an air suction pump 71 for sucking air in the barrel body 1 into the drying box 7. The drying box 7 is communicated with the barrel body 1 through a gas return pipe 72 for guiding the gas in the drying box 7 to flow into the barrel body 1 through the gas return pipe 72.
[0046] With reference to Figure 1 and Figure 5 The drying box 7 is internally provided with a sponge body 73 for absorbing water vapor. The sponge body 73 is located between the gas return pipe 72 and the suction pipe 711. The bottom of the drying box 7 is communicated with a collection box 74. The collection box 74 is internally filled with a drying element 741 for absorbing water vapor. Specifically, the drying element 741 can be a super absorbent polymer for absorbing water vapor in the drying box 7 and the collection box 74.
[0047] With reference to Figure 1 and Figure 5The fixed net rack 75 is fixedly installed in the drying box 7, and is located on the side of the sponge body 73 facing the air return pipe 72. The bottom of the fixed net rack 75 is inclined to form a gas blocking plate 751 inside the drying part 741, and the side wall of the gas blocking plate 751 is attached to the inner side wall of the drying box 7.
[0048] With reference to Figure 1 and Figure 5 The pushing rod 761 is slidably inserted into the side wall of the drying box 7 away from the air return pipe 72, and one end of the pushing rod 761 is exposed to the outside of the drying box 7. The extrusion net plate 76 is fixedly connected to the side wall of the sponge body 73, and can slide in the drying box 7 to extrude the sponge body 73.
[0049] The implementation principle of the PET scrap material modification device is as follows: The material is introduced into the barrel 1 through the feeding pipe 11. The stirring motor 26 drives the stirring shaft 21, the stirring rod 22 and the stirring paddle 25 to rotate. The stirring rod 22 stirs and mixes the material in the barrel 1. The rotating stirring paddle 25 guides the material at the bottom of the barrel 1 to flow towards the top of the barrel 1, so that the material at the top and the bottom of the barrel 1 flows and mixes with each other, improving the mixing uniformity and efficiency of the material in the barrel 1.
[0050] The mixing agent is introduced into the mixing cylinder 31 through the feeding pipe 32. The mixing motor 35 drives the mixing shaft 33 to rotate with the mixing paddle 34, so that the mixing agent is quickly guided to the bottom of the mixing cylinder 31 and discharged through the mixing hole 311 into the material in the barrel 1. The output end of the lifting member 37 drives the mixing cylinder 31 to move up and down to adjust the feeding position of the mixing agent in the barrel 1, improving the mixing efficiency and uniformity of the mixing agent and the material.
[0051] The exhaust pump 52 and the exhaust pipe 51 cooperate to suck and discharge the air in the barrel 1. The air supply pipe 53 and the air supply pump 54 cooperate to supply nitrogen gas to the barrel 1. The nitrogen gas gradually fills the barrel 1 to replace the air, reducing the color change of the material in the barrel 1 due to contact with oxygen. The heating part 132 in the heating bin 13 heats the nitrogen gas introduced into the barrel 1 to 200 degrees Celsius, so that the heated nitrogen gas increases the viscosity of the material in the barrel 1. In summary, the overall device improves the uniformity and stability of the PET scrap material modification.
[0052] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.
Claims
1. A device for modifying PET scrap, characterized in that: The container includes a barrel (1) and a feed pipe (11) connected to the top of the barrel (1), and a feed valve (111) is provided on the feed pipe (11); a discharge pipe (12) is connected to the bottom of the barrel (1), and a discharge valve (121) is provided on the discharge pipe (12); a stirring assembly (2) for stirring materials is provided on the barrel (1); a mixing assembly (3) for mixing additives is provided on the barrel (1); and a ventilation assembly (5) is provided on the barrel (1) to improve the gas environment inside the barrel (1).
2. The PET scrap modification device according to claim 1, characterized in that: The stirring assembly (2) includes a stirring shaft (21), a stirring rod (22), a guide cylinder (23), a support rod (24), stirring blades (25), and a stirring motor (26). The stirring shaft (21) is rotatably mounted on the barrel (1), the stirring rod (22) is mounted on the stirring shaft (21), the guide cylinder (23) is located inside the barrel (1), and the stirring shaft (21) is located inside the guide cylinder (23). The support rods (24) are spaced apart between the guide cylinder (23) and the inner bottom wall of the barrel (1) to support the guide cylinder (23). The stirring blades (25) are spirally mounted on the circumferential wall of the stirring shaft (21) along the length direction of the stirring shaft (21), and the stirring motor (26) is mounted on the barrel (1) to drive the stirring shaft (21) to rotate.
3. The PET scrap modification device according to claim 1, characterized in that: The mixing assembly (3) includes a mixing cylinder (31), a feeding pipe (32), a mixing shaft (33), a mixing blade (34), a mixing motor (35), a fixing frame (36), and a lifting component (37); the mixing cylinder (31) is slidably mounted on the barrel body (1), and several sets of mixing holes (311) are opened through the bottom of the mixing cylinder (31); the feeding pipe (32) is connected to the top of the mixing cylinder (31), and the mixing shaft (33) rotates... The mixing cylinder (31) is dynamically installed inside the mixing cylinder (31). The mixing blades (34) are spirally arranged on the circumferential wall of the mixing shaft (33) along the length direction of the mixing shaft (33). The mixing motor (35) is installed on the mixing cylinder (31) to drive the mixing shaft (33) to rotate. The fixed frame (36) is installed on the top of the barrel (1). The lifting component (37) is installed on the fixed frame (36) to drive the mixing cylinder (31) to move up and down.
4. The PET scrap modification device according to claim 3, characterized in that: The barrel (1) is equipped with a cleaning component (4) for cleaning the material on the outer wall of the mixing cylinder (31).
5. The PET scrap modification device according to claim 4, characterized in that: The cleaning assembly (4) includes a rotating ring (41), a baffle ring (42), a cleaning scraper (43), a transmission gear ring (44), a drive gear (45), and a drive motor (46); the rotating ring (41) is rotatably disposed inside the barrel (1), and the mixing cylinder (31) is located inside the rotating ring (41); the baffle ring (42) is disposed on the side wall of the rotating ring (41) away from the mixing motor (35), and the cleaning scraper (43) is disposed on the side wall of the baffle ring (42) away from the rotating ring (41), and all the cleaning scrapers (43) All of the cleaning scrapers (43) are distributed at intervals around the mixing cylinder (31), and each of the cleaning scrapers (43) abuts against the outer peripheral wall of the mixing cylinder (31); the transmission gear ring (44) is sleeved on the rotating ring (41), and the transmission gear ring (44) is located on the side of the baffle ring plate (42) facing the rotating ring (41); the drive gear (45) is rotatably disposed inside the barrel body (1), and the transmission gear ring (44) and the drive gear (45) mesh with each other; the drive motor (46) is disposed on the barrel body (1) to drive the drive gear (45) to rotate.
6. The PET scrap modification device according to claim 1, characterized in that: The ventilation assembly (5) includes an exhaust pipe (51), an exhaust pump (52), an air supply pipe (53), and an air supply pump (54); the exhaust pipe (51) is connected to the barrel body (1), the exhaust pump (52) is connected to the exhaust pipe (51) for drawing air from inside the barrel body (1); the air supply pipe (53) is connected to the barrel body (1) for supplying nitrogen; and the air supply pump (54) is connected to the air supply pipe (53) for delivering nitrogen towards the inside of the barrel body (1).
7. The PET scrap modification device according to claim 6, characterized in that: The barrel (1) is provided with a heating chamber (13) connected to the gas supply pipe (53). The side wall of the heating chamber (13) away from the gas supply pipe (53) is provided with several sets of ventilation holes (131). The heating chamber (13) is provided with a heating element (132) for heating nitrogen.
8. The PET scrap modification device according to claim 7, characterized in that: The heating chamber (13) is equipped with a temperature measuring device (61) for detecting nitrogen temperature data. The barrel (1) is equipped with a detection device (62) for detecting nitrogen concentration data inside the barrel (1). The barrel (1) is equipped with a control device (6) electrically connected to the temperature measuring device (61), the detection device (62), the gas supply pump (54), and the heating element (132). The control device (6) is used to receive temperature data and concentration data. When the temperature data is lower than a preset value, the control device (6) controls the heating element (132) to increase the heating power. When the concentration data is lower than a preset value, the control device (6) controls the gas supply pump (54) to increase the gas supply power.
9. The PET scrap modification device according to claim 1, characterized in that: A drying chamber (7) is provided on one side of the barrel (1). A suction pipe (711) is provided between the drying chamber (7) and the barrel (1). An air pump (71) is provided on the suction pipe (711) to draw air from the inside of the barrel (1) and introduce it into the drying chamber (7). A return air pipe (72) is provided on the side wall of the drying chamber (7) away from the air pump (71) and connected to the inside of the barrel (1). A sponge (73) for absorbing water vapor is provided inside the drying chamber (7). A collection box (74) is provided at the bottom of the drying chamber (7). A drying element (741) for absorbing water vapor is provided inside the collection box (74).
10. A PET scrap modification device according to claim 9, characterized in that: The drying chamber (7) is provided with a fixed mesh frame (75) inside, and the fixed mesh frame (75) is located on the side of the sponge (73) facing the return air pipe (72). The bottom of the fixed mesh frame (75) is provided with a baffle plate (751) that passes through the drying component (741), and the side wall of the baffle plate (751) is in contact with the inner side wall of the drying chamber (7). The sponge (73) is slidably provided with a squeezing mesh plate (76) on the side wall away from the fixed mesh frame (75), and the side wall of the squeezing mesh plate (76) facing the suction pipe (711) is provided with a push rod (761) exposed in the drying chamber (7).