A recycled plastic pre-treatment apparatus and process
Patent Information
- Application Number
- CN202610803202.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-05
- Publication Date
- 2026-08-18
AI Technical Summary
[0003]但现有再生塑料预处理设备在干燥物料时，物料易相互粘连成团，形成内部干燥死角；这不仅大幅延长干燥时间、增加设备能耗，还会导致部分物料干燥不彻底、含水率超标，进而影响后续造粒质量与效果，降低设备整体预处理效率
（1）利用导向齿框带动驱动齿轮往复转动，进而驱动储料方盒在加热箱内进行往复翻转，使储料方盒内的物料在干燥过程中持续翻滚和换位，避免物料长期堆积于同一区域而形成内部干燥死角，同时使热风能够从多个方向与物料接触，提高物料受热均匀性和干燥效率，以解决干燥时物料易相互粘连成团、内部区域难以充分干燥的问题；
Smart Images
Figure CN122584540A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of plastic pretreatment technology, specifically a pretreatment equipment and process for recycled plastics. Background Technology
[0002] Recycling and utilizing recycled plastics is an important way to solve plastic pollution and achieve resource recycling. Pre-treatment is the core link to ensure the quality of recycled materials. Drying, as a key step in pre-treatment, directly determines the performance of subsequent granulation and molding products.
[0003] However, in existing recycled plastic pretreatment equipment, the materials tend to stick together and clump together during the drying process, forming internal drying dead zones. This not only significantly prolongs the drying time and increases equipment energy consumption, but also leads to some materials not drying completely and having excessive moisture content, which in turn affects the quality and effect of subsequent granulation and reduces the overall pretreatment efficiency of the equipment. Summary of the Invention
[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a pretreatment equipment and process for recycled plastics, which effectively solves the problems in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a pretreatment device for recycled plastics, comprising a treatment platform; a heating box is installed on the treatment platform; a rotary drying unit is provided on the heating box for drying the material; the rotary drying unit includes a drive shaft installed on the side of the heating box; The drive gear is connected to the end of the drive shaft away from the heating box; A storage box is connected to the end of the drive shaft away from the drive gear; the storage box is located inside the heating box; several through ventilation holes are provided around the storage box. A drive cam is installed on the side of the drive gear away from the drive shaft; the heating box is also equipped with a uniform air distribution device for sending hot air to the storage box; the uniform air distribution device includes a brake base plate, which is installed on the side of the heating box. A brake spool is disposed through the brake base plate on the side near the drive cam; the brake spool is in sliding engagement with the brake base plate; A brake block is installed at one end of the brake slide near the drive cam; the side of the brake block away from the brake slide is located on the rotation path of the outer wall of the drive cam. A vortex mixing component is installed on a storage box; the vortex mixing component is used to disperse the material in the storage box; the vortex mixing component includes a stirring shaft, which is installed on the side of the storage box. A stirring rod is connected to the outer wall of the stirring shaft; all of the stirring rods are located inside the storage box. The first pulley is installed at the end of the agitator shaft away from the storage box.
[0006] Preferably, it includes a feed pipe connected to the top of the heating chamber; the feed pipe is equipped with valve A. The discharge port is located at the bottom of the heating box; the bottom of the processing base is provided with a through discharge channel; the discharge channel is connected to the discharge port; a B valve is provided inside the discharge port.
[0007] Preferably, it includes an electrically controlled main gate connected to the top of the storage box; An electric telescopic tube is installed at the top inside the heating box; the electrically controlled main gate is located on the moving path of the electric telescopic tube; the electric telescopic tube is connected to the feed pipe; An electrically controlled auxiliary gate is connected to the side of the storage box.
[0008] Preferably, it includes an air inlet slot, which is disposed through the side of the heating box; A heating chamber is installed on the side of a heating box; the air inlet is located inside the heating chamber; the heating chamber contains several heating modules; The first fan is installed on the side of the heating box away from the heating box; The second fan is installed on the side of the heating box near the heating box; the second fan is located inside the air inlet slot.
[0009] Preferably, it includes a positioning shaft, which is installed on the side of the storage box away from the drive shaft; the end of the positioning shaft away from the storage box extends to the outside of the heating box and is connected to an L-shaped rotating block; A fixed ring is fixedly connected to the outside of the heating box; the L-shaped rotating block is fitted to the inner wall of the fixed ring, and the two rotate in coordination.
[0010] Preferably, it includes a retaining bracket, which is mounted on the processing base; The drive motor is mounted on the mounting bracket; The drive disc is connected to the output end of the drive motor; The guide column is installed on the edge of the drive disc away from the retaining bracket.
[0011] Preferably, it includes a guide plate mounted on a retaining bracket; A guide cylinder is connected through the guide base plate on the side near the guide post; the guide cylinder and the guide base plate are in sliding fit. A guide block is installed at one end of the guide cylinder near the guide post; the guide block is located on the side of the drive disc away from the fixed support; A guide plate is installed at the end of the guide cylinder away from the guide column body. A guide groove is provided through the guide block on the side near the drive disk; the guide column is located inside the guide groove, and the two slide together.
[0012] Preferably, it includes a guide spring, which is sleeved on the guide cylinder; one end of the guide spring is fixedly connected to the guide base plate, and the other end is fixedly connected to the guide limiting plate; A guide gear frame is mounted on a guide limit plate; the drive gear is located inside the guide gear frame, and the two are meshed together.
[0013] Preferably, it includes a brake spring, which is sleeved on the brake slide; one end of the brake spring is fixedly connected to the brake cross block, and the other end is fixedly connected to the brake base plate; Brake racks are installed on both sides of the brake slide; the tooth grooves of the two brake racks are arranged opposite to each other; A brake shaft is connected to the side of the heating chamber; one end of the brake shaft is located outside the heating chamber and is connected to a brake gear; the other end of the brake shaft is located inside the heating chamber and is connected to an air distribution plate; the two air distribution plates are symmetrically arranged with the brake slide as the axis of symmetry; the two brake gears are located on opposite sides of the two brake racks; the brake racks are meshed with the brake gears.
[0014] Preferably, it includes a semi-circular toothed ring, installed inside the heating chamber; the semi-circular toothed ring is coaxial with the center of the drive shaft; A limiting base is installed on the side of the storage box; A limiting shaft is connected to a limiting base; one end of the limiting shaft is connected to a limiting gear, and the other end is connected to a second pulley; the limiting gear meshes with the half-shaped toothed ring. The drive belt is connected at one end to the second pulley and at the other end to the first pulley; A spring is connected to a limiting shaft; the end of the spring is fixedly connected to the limiting base.
[0015] The present invention also provides a pretreatment process for recycled plastics, comprising the following steps: S1. Add the recycled plastic material to be processed into the storage box and place the storage box inside the heating chamber; S2. Start the rotary drying unit, drive the rotating shaft to rotate the storage box, so that the material in the storage box is continuously turned over, and at the same time, the heating box is used to dry the material. S3. During the rotation of the storage box, the airflow around the storage box is guided by the uniform control air distribution device, and the stirring rod is driven by the frequency rotation stirring and dispersing component to disperse the material in the storage box, so that the material continuously changes position during the turning, dispersing and drying process until the moisture content of the material reaches the standard.
[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) The guide tooth frame drives the drive gear to rotate back and forth, thereby driving the storage box to rotate back and forth in the heating box, so that the material in the storage box can continuously roll and change position during the drying process, avoiding the material from accumulating in the same area for a long time and forming internal drying dead corners. At the same time, hot air can contact the material from multiple directions, improving the uniformity of material heating and drying efficiency, so as to solve the problem that the material is easy to stick together and clump together during drying and the internal area is difficult to dry fully. (2) The limiting gear meshes periodically with the half-shaped toothed ring and is reset with the energy stored by the spring, so as to realize the forward and reverse stirring action of the stirring shaft and stirring rod, which can continuously break up the plastic materials that are stuck together and clump together in the storage box, increase the contact area between the material and the hot air flow, improve the heat exchange efficiency, and further eliminate the drying dead corners with the flipping action of the storage box, thereby improving the quality of recycled plastic pretreatment and subsequent granulation processing. (3) By driving the cam to drive the brake rack and brake gear, the two air distribution plates continuously swing towards and away from each other, guiding and converging the hot air in the heating box, so that the hot air can be continuously concentrated around the storage box and change the flow direction, improving the coverage and utilization efficiency of the hot air, avoiding insufficient heating in local areas and the generation of drying blind spots, and further improving the overall drying uniformity of the material. (4) This invention integrates material turning, directional air distribution and automatic stirring functions to achieve uniform and efficient drying of recycled plastic materials, greatly shorten the drying time and reduce energy consumption, thereby improving the overall pretreatment efficiency of the equipment and the stability of the finished product quality. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.
[0018] In the attached diagram: Figure 1 This is one of the overall structural schematic diagrams of the present invention; Figure 2 This is a cross-sectional view of the discharge channel of the present invention; Figure 3 This is a side sectional view of the discharge port of the present invention; Figure 4 This is a cross-sectional view of the storage box of the present invention; Figure 5 This is the second schematic diagram of the overall structure of the present invention; Figure 6 This is a side sectional view of the electric telescopic tube of the present invention; Figure 7 This is a cross-sectional view of the stirring shaft of the present invention; Figure 8 For the present invention Figure 3 A magnified view of the structure at point A in the middle; Figure 9 This is a schematic diagram of the guide tooth frame structure of the present invention; Figure 10 This is an exploded cross-sectional view of the feed pipe of the present invention; Figure 11 This is a cross-sectional view of the heating box of the present invention; Figure 12 This is a side view of the brake rack of the present invention; In the diagram: 1. Processing base; 2. Heating box; 3. Drive shaft; 4. Drive gear; 5. Storage box; 6. Drive cam; 7. Brake base plate; 8. Brake slide; 9. Brake block; 10. Agitator shaft; 11. Agitator rod; 12. First pulley; 13. Feed pipe; 14. A valve; 15. Discharge port; 16. Discharge channel; 17. B valve; 18. Electrically controlled main gate; 19. Electrically operated telescopic pipe; 20. Electrically controlled auxiliary gate; 21. Air inlet; 22. Heating box; 23. Heating module; 24. First fan; 25. Second fan; 26. Positioning shaft; 7. L-shaped rotating block; 28. Fixing ring; 29. Fixing bracket; 30. Drive motor; 31. Drive disc; 32. Guide column; 33. Guide base plate; 34. Guide cylinder; 35. Guide rectangular block; 36. Guide limiting plate; 37. Guide groove; 38. Guide spring; 39. Guide tooth frame; 40. Brake spring; 41. Brake rack; 42. Brake shaft; 43. Brake gear; 44. Air distribution plate; 45. Half-shaped toothed ring; 46. Limiting base; 47. Limiting shaft; 48. Limiting gear; 49. Second pulley; 50. Transmission belt; 51. Clockwork spring. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0020] Implementation examples, by Figures 1 to 12 The present invention includes a processing base 1; a heating box 2 is installed on the processing base 1; and a rotary drying unit is provided on the heating box 2 for drying materials. The rotary drying unit includes a drive shaft 3, mounted on the side of the heating chamber 2; a drive gear 4, connected to the end of the drive shaft 3 away from the heating chamber 2; a storage box 5, connected to the end of the drive shaft 3 away from the drive gear 4; the storage box 5 is located inside the heating chamber 2; the storage box 5 has several through ventilation holes around its perimeter; a drive cam 6, mounted on the side of the drive gear 4 away from the drive shaft 3; a feed pipe 13, connected to the top of the heating chamber 2; an A valve 14 is installed inside the feed pipe 13; a discharge port 15 is located at the bottom of the heating chamber 2; a through discharge channel 16 is provided at the bottom of the processing base 1; the discharge channel 16 is connected to the discharge port 15; a B valve 17 is installed inside the discharge port 15; and an electrically controlled main gate 18, connected to the storage box 2. The material storage box 5 is located at the top; an electric telescopic tube 19 is installed inside the heating box 2 at the top; an electrically controlled main gate 18 is located on the moving path of the electric telescopic tube 19; the electric telescopic tube 19 is connected to the feed pipe 13; an electrically controlled auxiliary gate 20 is connected to the side of the material storage box 5; an air inlet 21 is installed through the side of the heating box 2; a heating box 22 is installed on the side of the heating box 2; the air inlet 21 is located inside the heating box 22; several heating modules 23 are provided inside the heating box 22; a first fan 24 is installed on the side of the heating box 22 away from the heating box 2; a second fan 25 is installed on the side of the heating box 22 close to the heating box 2; the second fan 25 is located inside the air inlet 21; a positioning shaft 26 is installed on the material storage box 5. On the side away from the drive shaft 3; the end of the positioning shaft 26 away from the storage box 5 extends to the outside of the heating box 2 and is connected to an L-shaped rotating block 27; the fixing ring 28 is fixedly connected to the outside of the heating box 2; the L-shaped rotating block 27 is fitted to the inner wall of the fixing ring 28, and the two rotate in cooperation; the fixing bracket 29 is installed on the processing base 1; the drive motor 30 is installed on the fixing bracket 29; the drive disc 31 is connected to the output end of the drive motor 30; the guide column 32 is installed on the edge of the drive disc 31 away from the fixing bracket 29; the guide base plate 33 is installed on the fixing bracket 29; the guide cylinder 34 is connected through the guide base plate 33 on the side near the guide column 32; the guide cylinder 34 and the guide The base plate 33 is slidably fitted; the guide block 35 is installed on the end of the guide cylinder 34 near the guide post 32; the guide block 35 is located on the side of the drive disk 31 away from the fixed bracket 29; the guide limiting plate 36 is installed on the end of the guide cylinder 34 away from the guide post 32; the guide groove 37 is provided through the guide block 35 on the side near the drive disk 31; the guide post 32 is located in the guide groove 37, and the two are slidably fitted; the guide spring 38 is sleeved on the guide cylinder 34; one end of the guide spring 38 is fixedly connected to the guide base plate 33, and the other end is fixedly connected to the guide limiting plate 36; the guide gear frame 39 is installed on the guide limiting plate 36; the drive gear 4 is located in the guide gear frame 39, and the two are meshed. In use, first, the electric telescopic tube 19 is opened, causing it to move downwards and connect with the electrically controlled main gate 18 at the top of the storage box 5. At the same time, valve A 14 and the electrically controlled main gate 18 are opened. The material to be processed enters the storage box 5 through the feed pipe 13, the electric telescopic tube 19, and the electrically controlled main gate 18 to complete the loading. After loading is completed, valve A 14 and the electrically controlled main gate 18 are closed. Then, the drive motor 30 is started. The drive motor 30 drives the drive disc 31 to rotate continuously. When the drive disc 31 rotates, through the cooperation between the guide column 32 and the guide slide 37, it pushes the guide block 35, the guide cylinder 34, and the guide limit plate 36 to reciprocate, so that the guide tooth frame 39 synchronously generates reciprocating linear motion. Since the guide gear frame 39 is meshed with the drive gear 4, the reciprocating motion of the guide gear frame 39 will drive the drive gear 4 to reciprocate and rotate, which in turn will drive the storage box 5 to reciprocate and rotate inside the heating box 2 via the drive shaft 3. During the rotation of the storage box 5, the positioning shaft 26 rotates synchronously, and the rotational cooperation between the L-shaped rotating block 27 and the fixing ring 28 provides support and positioning for the storage box 5, so as to ensure the stable swing of the storage box 5. At the same time, the first fan 24 and the second fan 25 are started. Outside air is drawn into the heating box 22 by the first fan 24, heated by the heating module 23 to form a hot airflow, and then enters the heating box 2 through the air inlet 21 under the action of the second fan 25 to heat and dry the material in the storage box 5. Because the storage box 5 continuously oscillates during the drying process, the internal material will continuously roll and change position under the action of gravity, causing the material originally located in different positions to continuously exchange positions. This avoids the material from being fixedly piled up in the same area for a long time, forming a drying dead corner. At the same time, it allows hot air to contact the material from multiple directions, improving the uniformity of heating and heat exchange efficiency. This avoids the problem of materials easily sticking together and forming internal drying dead corners, resulting in insufficient drying. This not only significantly reduces the drying time and the energy consumption of the equipment, but also ensures that the material is dried thoroughly and the moisture content meets the standard, improving the quality and effect of subsequent granulation, thereby further improving the overall pretreatment efficiency of the equipment. After drying is completed, open the electrically controlled auxiliary gate 20 and valve B 17, and control the storage box 5 to flip to the side tilting state, so that the electrically controlled auxiliary gate 20 faces downward. Under the action of gravity, the material is discharged through the discharge port 15 and the discharge channel 16 in sequence, thereby realizing automatic unloading.
[0021] In this embodiment, the heating box 2 is also equipped with a uniform air distribution device for delivering hot air to the storage box 5. The uniform air distribution device includes a brake base plate 7, which is installed on the side of the heating box 2; a brake slide 8, which is disposed through the brake base plate 7 on the side near the drive cam 6; the brake slide 8 is slidably engaged with the brake base plate 7; a brake cross block 9 is installed on the end of the brake slide 8 near the drive cam 6; the side of the brake cross block 9 away from the brake slide 8 is located on the rotation path of the outer wall of the drive cam 6; and a brake spring 40 is sleeved on the brake slide 8; one end of the brake spring 40 is fixed to the brake cross block 9. The first end is connected to the second end, and the second end is fixedly connected to the brake base plate 7; the second end is connected to the third end, and the third end is fixedly connected to the fourth end, and the fourth end is fixedly connected to the fifth end, and the fifth end is fixedly connected to the sixth end, and the sixth end is fixedly connected to the seventh end, and the seventh end is fixedly connected to the eighth end, and the eighth end is fixedly connected to the fifth end, and the ninth end is fixedly connected to the fifth ... eighth end is fixedly connected to the fifth end, and the ninth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly connected to the fifth end, and the eighth end is fixedly
[0022] During the operation of the rotary drying unit, the drive gear 4 reciprocates and drives the drive cam 6 to rotate synchronously. When the drive cam 6 rotates to the position of contacting the brake block 9, the drive cam 6 pushes the brake block 9 to move and compresses the brake spring 40, causing the brake slide 8 to slide back and forth along the brake base plate 7. When the brake slide 8 moves, it drives the brake racks 41 on both sides to move up and down synchronously. Since the two brake racks 41 are respectively engaged with the corresponding brake gears 43, the linear motion of the brake racks 41 is converted into the rotational motion of the brake gears 43, which in turn drives the two air distribution plates 44 to rotate through the brake shaft 42. When the drive cam 6 leaves the brake block 9, the brake spring 40 releases its elastic force and pushes the brake slide 8 back to its original position, thereby driving the two air distribution plates 44 to move in opposite directions, causing the two air distribution plates 44 to continuously swing towards and away from each other. Since the hot airflow inside the heating box 2 is continuously guided by the two air distribution plates 44 during the flow process, the hot air can continuously converge towards the area around the storage box 5 and continuously change the direction of hot air flow, so that the hot air evenly covers all areas of the storage box 5, improves the utilization rate and coverage of the hot airflow, avoids insufficient hot air in some areas to form drying blind spots, and further improves the drying uniformity and overall drying efficiency of the material inside the storage box 5.
[0023] In this embodiment, the vortex mixing assembly is disposed on the storage box 5; the vortex mixing assembly is used to disperse the material in the storage box 5; the vortex mixing assembly includes a stirring shaft 10, which is installed on the side of the storage box 5; a stirring rod 11, which is connected to the outer wall of the stirring shaft 10; several stirring rods 11 are located inside the storage box 5; a first pulley 12, which is installed at the end of the stirring shaft 10 away from the storage box 5; and a semi-cut toothed ring 45, which is installed inside the heating box 2; the semi-cut toothed ring 45 and the drive shaft 3... The components are coaxial; a limiting base 46 is installed on the side of the storage box 5; a limiting shaft 47 is connected to the limiting base 46; one end of the limiting shaft 47 is connected to a limiting gear 48, and the other end is connected to a second pulley 49; the limiting gear 48 meshes with a half-shaped toothed ring 45; a transmission belt 50 is connected at one end to the second pulley 49 and at the other end to the first pulley 12; a spring 51 is connected to the limiting shaft 47; the end of the spring 51 is fixedly connected to the limiting base 46. When the storage box 5 reciprocates with the drive shaft 3, the limiting gear 48 mounted on the limiting shaft 47 moves synchronously around the drive shaft 3 and periodically contacts the fixed half-tooth ring 45. When the limiting gear 48 runs to the area where the half-tooth ring 45 is located, the two mesh, and the half-tooth ring 45 drives the limiting gear 48 to rotate, thereby driving the limiting shaft 47 and the second pulley 49 to rotate synchronously. Through the transmission belt 50, the first pulley 12 and the stirring shaft 10 are driven to rotate, so that several stirring rods 11 stir and disperse the material inside the storage box 5. At the same time, during the rotation of the limiting shaft 47, the spring spring 51 gradually twists to store energy. When the limiting gear 48 disengages from the half-toothed ring 45, the two disengage. At this time, the spring 51 releases its stored elastic potential energy and drives the limiting shaft 47 to rotate in the opposite direction. This, in turn, drives the stirring shaft 10 to rotate in the opposite direction through the second pulley 49, the transmission belt 50, and the first pulley 12, causing the stirring rod 11 to stir the material again in the opposite direction. Through the continuous forward and reverse stirring, the plastic materials that are stuck together or clumped together inside the storage box 5 can be continuously broken up, keeping the material in a relatively loose state and in full contact with the hot airflow. At the same time, in conjunction with the reciprocating flipping action of the storage box 5 itself, the material flipping frequency and position exchange efficiency can be further improved, preventing the material from piling up and forming internal drying dead corners, improving the overall heating uniformity and drying efficiency, and thus further avoiding the material from sticking together during the drying process, thereby reducing the limitations of the equipment in actual use.
[0024] The present invention also provides a pretreatment process for recycled plastics, comprising the following steps: S1. Add the recycled plastic material to be processed into the storage box 5, and place the storage box 5 inside the heating box 2; S2. Start the rotary drying unit, drive the rotating shaft 3 to rotate the storage box 5, so that the material in the storage box 5 is continuously turned over, and at the same time, the heating box 2 is used to dry the material. S3. During the rotation of the storage box 5, the airflow around the storage box 5 is guided by the uniform control air distribution device, and the stirring rod 11 is driven by the frequency rotation stirring and dispersing component to disperse the material in the storage box 5, so that the material continuously changes position during the turning, dispersing and drying process until the moisture content of the material reaches the standard.
[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A pretreatment device for recycled plastics, comprising a treatment platform; characterized in that: A heating chamber is installed on the processing platform; a rotary drying unit is provided on the heating chamber for drying the material; the rotary drying unit includes a drive shaft, which is installed on the side of the heating chamber. The drive gear is connected to the end of the drive shaft away from the heating box; A storage box is connected to the end of the drive shaft away from the drive gear; the storage box is located inside the heating box; several through ventilation holes are provided around the storage box. A drive cam is installed on the side of the drive gear away from the drive shaft; the heating box is also equipped with a uniform air distribution device for sending hot air to the storage box; the uniform air distribution device includes a brake base plate, which is installed on the side of the heating box. A brake spool is disposed through the brake base plate on the side near the drive cam; the brake spool is in sliding engagement with the brake base plate; A brake block is installed at one end of the brake slide near the drive cam; the side of the brake block away from the brake slide is located on the rotation path of the outer wall of the drive cam. A vortex mixing component is installed on a storage box; the vortex mixing component is used to disperse the material in the storage box; the vortex mixing component includes a stirring shaft, which is installed on the side of the storage box. A stirring rod is connected to the outer wall of the stirring shaft; all of the stirring rods are located inside the storage box. The first pulley is installed at the end of the agitator shaft away from the storage box.
2. The pretreatment equipment for recycled plastics according to claim 1, characterized in that: It also includes a feed pipe connected to the top of the heating box; the feed pipe is equipped with valve A. The discharge port is located at the bottom of the heating box; the bottom of the processing base is provided with a through discharge channel; the discharge channel is connected to the discharge port; a B valve is provided inside the discharge port; The electrically controlled main gate is connected to the top of the storage box; An electric telescopic tube is installed at the top inside the heating box; the electrically controlled main gate is located on the moving path of the electric telescopic tube; the electric telescopic tube is connected to the feed pipe; An electrically controlled auxiliary gate is connected to the side of the storage box.
3. The recycled plastic pretreatment equipment according to claim 2, characterized in that: It also includes an air inlet slot, which is installed through the side of the heating box; A heating chamber is installed on the side of a heating box; the air inlet is located inside the heating chamber; the heating chamber contains several heating modules; The first fan is installed on the side of the heating box away from the heating box; The second fan is installed on the side of the heating box near the heating box; the second fan is located inside the air inlet slot.
4. The pretreatment equipment for recycled plastics according to claim 3, characterized in that: It also includes a positioning shaft, which is installed on the side of the storage box away from the drive shaft; the end of the positioning shaft away from the storage box extends to the outside of the heating box and is connected to an L-shaped rotating block; A fixed ring is fixedly connected to the outside of the heating box; the L-shaped rotating block is fitted to the inner wall of the fixed ring, and the two rotate in coordination.
5. The pretreatment equipment for recycled plastics according to claim 4, characterized in that: Includes a retaining bracket, installed on the processing base; The drive motor is mounted on the mounting bracket; The drive disc is connected to the output end of the drive motor; The guide column is installed on the edge of the drive disc away from the retaining bracket.
6. The pretreatment equipment for recycled plastics according to claim 5, characterized in that: Includes a guide plate, mounted on a mounting bracket; A guide cylinder is connected through the guide base plate on the side near the guide post; the guide cylinder and the guide base plate are in sliding fit. A guide block is installed at one end of the guide cylinder near the guide post; the guide block is located on the side of the drive disc away from the fixed support; A guide plate is installed at the end of the guide cylinder away from the guide column body. A guide groove is provided through the guide block on the side near the drive disk; the guide column is located inside the guide groove, and the two slide together.
7. The pretreatment equipment for recycled plastics according to claim 6, characterized in that: Includes a guide spring, which is sleeved on a guide cylinder; one end of the guide spring is fixedly connected to the guide base plate, and the other end is fixedly connected to the guide limiting plate; A guide gear frame is mounted on a guide limit plate; the drive gear is located inside the guide gear frame, and the two are meshed together.
8. The pretreatment equipment for recycled plastics according to claim 7, characterized in that: Includes a brake spring, which is sleeved on the brake slide; one end of the brake spring is fixedly connected to the brake cross block, and the other end is fixedly connected to the brake base plate; Brake racks are installed on both sides of the brake slide; the tooth grooves of the two brake racks are arranged opposite to each other; A brake shaft is connected to the side of the heating chamber; one end of the brake shaft is located outside the heating chamber and is connected to a brake gear; the other end of the brake shaft is located inside the heating chamber and is connected to an air distribution plate; the two air distribution plates are symmetrically arranged with the brake slide as the axis of symmetry; the two brake gears are located on opposite sides of the two brake racks; the brake racks are meshed with the brake gears.
9. A pretreatment device for recycled plastics according to claim 8, characterized in that: It includes a semi-circular toothed ring, which is installed inside the heating chamber; the semi-circular toothed ring is coaxial with the center of the drive shaft; A limiting base is installed on the side of the storage box; A limiting shaft is connected to a limiting base; one end of the limiting shaft is connected to a limiting gear, and the other end is connected to a second pulley; the limiting gear meshes with the half-shaped toothed ring. The drive belt is connected at one end to the second pulley and at the other end to the first pulley; A spring is connected to a limiting shaft; the end of the spring is fixedly connected to the limiting base.
10. A pretreatment process for recycled plastics, using the pretreatment equipment for recycled plastics as described in claim 1, characterized in that, The process includes the following steps: S1. Add the recycled plastic material to be processed into the storage box and place the storage box inside the heating chamber; S2. Start the rotary drying unit, drive the rotating shaft to rotate the storage box, so that the material in the storage box is continuously turned over, and at the same time, the heating box is used to dry the material. S3. During the rotation of the storage box, the airflow around the storage box is guided by the uniform control air distribution device, and the stirring rod is driven by the frequency rotation stirring and dispersing component to disperse the material in the storage box, so that the material continuously changes position during the turning, dispersing and drying process until the moisture content of the material reaches the standard.