A feeding structure for a banburying device for recycling plastic processing

Abstract

The application discloses a feeding structure for a mixing device for recycling plastic processing, which is applied to the mixing field. The feeding structure is characterized by the following technical scheme: a double-helix roller and a scraper are arranged in a premixing barrel to implement bidirectional mixing of material in the circumferential and axial directions, so that the components in the material are uniformly distributed, the subsequent melting time is shortened, and the energy consumption is reduced. Meanwhile, a discharge groove parallel to the axial direction of the mixing chamber is arranged, so that the material is uniformly spread and filled along the axial direction of the mixing chamber, replacing the traditional central point feeding mode. The feeding structure not only improves the uniformity of material filling, but also improves the single filling amount, realizes full utilization of the volume of the mixing chamber, and further reduces the energy consumption. In addition, horizontal, vertical and axial partitions are arranged, so that the high-temperature volatile gas discharged from the mixing chamber fully contacts the outer wall of the barrel, the remaining heat of the high-temperature volatile gas is used to preheat the material to be fed in the barrel, the temperature difference between the material and the molten material is reduced, the melting efficiency is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of mixing, and particularly to a feeding structure for a mixing apparatus for recycling plastics. Background Technology

[0002] In the plastic recycling process, the internal mixer is a key melting and plasticizing equipment. It achieves uniform melting, plasticization, and impurity dispersion of recycled plastics through high-temperature, high-shear internal mixing, providing high-quality recycled materials for subsequent molding. The feeding structure of the internal mixer is usually located at the top of the machine. The core component is a feeding hopper with an openable and closable gate. When feeding, the gate opens, and the crushed plastic flakes or granules are added into the mixing chamber. Subsequently, the hydraulically or pneumatically driven top bolt (pressure weight) quickly presses down to close the feeding port and apply initial pressure to the material. This design ensures the airtightness of the melting process, effectively preventing material spillage and maintaining the necessary working pressure and temperature environment in the mixing chamber, creating conditions for efficient mixing.

[0003] The existing patent with publication number CN219338193U discloses a feeding device for an internal mixer. Through a reciprocating sliding plate with through holes set at the bottom of the feeding chamber, the device can evenly spread the raw materials and auxiliary materials in the mixing chamber, thereby achieving the core effect of improving the mixing uniformity and accelerating the mixing process. At the same time, its attached dust absorption mechanism further enhances its practicality and environmental friendliness.

[0004] A patent application with publication number CN209533910U discloses a feeding device for an internal mixer. By configuring multiple sets of storage tanks and an electronic valve control system, and with an upward spiral stirring device in the feeding hopper, the feeding device realizes automatic and accurate metering and feeding of various materials, and pre-mixes them before feeding. This not only significantly improves the automation and efficiency of feeding, but also allows the materials to be uniformly mixed in advance, providing more uniform raw materials for the subsequent internal mixing process, thereby effectively improving the overall mixing effect and quality.

[0005] The aforementioned prior art discloses a technical solution for achieving uniform material spreading by using a reciprocating sliding plate with through holes, and also discloses a technical solution for pre-mixing materials by using a stirring device in the feeding hopper. However, the prior art still has shortcomings, and the existing feeding structure makes it difficult to make the various components of the material uniformly fill the mixing chamber. Summary of the Invention

[0006] The core of this invention lies in solving the problem of the difficulty in uniformly filling the mixing chamber with various components of the material in the prior art by using a combination of double spiral rollers, scrapers and discharge troughs parallel to the axial direction of the mixing chamber. At the same time, the heat of the volatile gas is used to heat the material to be fed, thereby reducing energy consumption and improving melting efficiency.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A feeding structure for a mixing equipment for recycling plastics includes a mixer, a feeding hood is fixedly connected to the upper end of the mixer, a premixing cylinder is fixedly passed through the feeding hood, a discharge pipe is fixedly connected to the upper end of the premixing cylinder, and a feeding hopper is fixedly connected to the upper end of the discharge pipe. The premixing cylinder includes a cylinder body, inside which is provided a double helical roller. The double helical roller includes a roller shaft and a pair of helical blades fixed on the roller shaft and rotating in opposite directions. One end of the roller shaft extends to the outside of the cylinder body and is fixedly connected to the output shaft of a first motor. The housing of the first motor is fixedly connected to the outer wall of the cylinder body. A scraper is provided on the outside of the double helical roller. The scraper is slidably connected to the inner wall of the cylinder body. Rotary drums are fixedly connected to both ends of the scraper. The rotary drums are rotatably sleeved on the outside of the roller shaft. The rotary drum away from the first motor extends to the outside of the cylinder body and is fixedly connected to a driven gear. The driven gear meshes with a transmission gear. The transmission gear meshes with a drive gear. The drive gear is fixedly connected to the other end of the roller shaft extending to the outside of the cylinder body. The lower part of the cylinder is provided with a discharge chute, and a discharge plate is hinged to the inner wall of the discharge chute. An electric push rod is hinged to the outer wall of the discharge plate. The end of the electric push rod away from the discharge plate is hinged to the inner wall of the feed hood. The electric push rod drives the discharge plate to rotate, so that the material in the cylinder is discharged from the discharge plate. The internal mixer is provided with a mixing chamber. The discharge chute is a rectangular chute and is opened along the axial direction of the cylinder. The axial direction of the cylinder is parallel to the axial direction of the mixing chamber, so that the material discharged from the discharge chute is spread and filled along the axial direction of the mixing chamber.

[0009] Furthermore, the rotating drum is a horizontally arranged cylindrical structure, the scraper is in the shape of a gate, the transmission gear is fixedly connected to the mounting shaft, the mounting shaft is rotatably connected to the fixing plate, and the fixing plate is fixedly connected to the outer wall of the drum.

[0010] Furthermore, an upper top bolt is provided above the mixing chamber and is slidably connected to the inner wall of the mixing machine. The upper end of the upper top bolt is fixedly connected to the movable end of a hydraulic cylinder. The upper end of the cylinder body of the hydraulic cylinder is fixedly connected to an installation rod. The installation rod is fixedly connected to the inner wall of the mixing machine. The upper end of the upper top bolt is pointed. An inclined protrusion is provided on the inner wall of the mixing machine above the mixing chamber.

[0011] Furthermore, the cylinder is a horizontally arranged hollow cylindrical structure with a feed chute at the upper end that communicates with the feed pipe, and two discharge chutes that are symmetrically located at the lower part of the cylinder.

[0012] Furthermore, the feeding pipe is a square pipe with a rectangular cross-section, and it is arranged along the axial direction of the cylinder. A gate is slidably inserted inside the feeding pipe, and an electric push rod 2 is fixedly connected to the end of the gate away from the feeding pipe. The housing of the electric push rod 2 is fixedly connected to the outer wall of the feeding pipe.

[0013] Furthermore, a crushing roller is provided at the connection between the upper end of the feeding pipe and the feeding hopper. One end of the crushing roller extends to the outside of the feeding pipe and is connected to the output shaft of the second motor.

[0014] Furthermore, a pair of horizontal partitions are fixedly connected to the lower part of the cylinder. The outer ends of the horizontal partitions are fixedly connected to the inner wall of the feed hood and are positioned above the discharge chute. The feed hood, the discharge pipe, the cylinder, and the horizontal partitions enclose a cavity 1. An axial partition is fixedly connected to one end of the discharge pipe. The axial partition divides cavity 1 into two cavities 2 connected at one end. Multiple vertical partitions are fixedly connected to the upper end of the horizontal partitions. The multiple vertical partitions divide cavity 2 into multiple cavities 3. Upper and lower vent holes are spaced apart on the multiple vertical partitions. An air inlet is provided at the end of the horizontal partition near the axial partition. The air inlet is connected to the cavity of the feed hood located below the cylinder. An exhaust pipe is fixedly connected to the end of the feed hood away from the axial partition. An exhaust fan is fixedly connected to the exhaust pipe and is connected to the end of cavity 1 away from the axial partition.

[0015] Furthermore, the upper vent is located on the upper part of the vertical partition, and the lower vent is located on the lower part of the vertical partition. The upper and lower vents on adjacent vertical partitions are staggered.

[0016] Compared with the prior art, the advantages of this invention are: (1) The present invention uses a premixing cylinder set in the feeding hood, and uses the double spiral roller and scraper in the premixing cylinder to mix the material in both the circumferential and axial directions, so that the different components in the material are fully mixed, reducing the probability of fine materials settling to the bottom, making the components in the material evenly distributed, shortening the subsequent melting time, and reducing energy consumption. At the same time, by opening a discharge trough parallel to the axial direction of the mixing chamber, the material is evenly spread and filled along the axial direction of the mixing chamber, replacing the traditional center point feeding method. This not only improves the uniformity of material filling, but also increases the amount of filling per batch, realizes the full utilization of the volume of the mixing chamber, reduces the number of mixing times required for the same volume of recycled plastic, and further reduces the energy consumption of plastic recycling and melting.

[0017] (2) The present invention uses a cylinder, horizontal baffle, vertical baffle and axial baffle set in the feed hood to make the volatile gas fully contact the outer wall of the cylinder, and use the heat of the volatile gas to heat the cylinder and the material inside the cylinder, thereby reducing the temperature difference between the material to be fed and the plastic melt, further improving the material melting efficiency, and realizing the utilization of the volatile gas preheating to further reduce energy consumption. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the transverse cross-sectional structure of the feed hood in this invention; Figure 4 This is a longitudinal sectional view of the feed hood in this invention. Figure 5 This is a schematic diagram of the exploded assembly structure of the premixing cylinder in this invention; Figure 6 This is a schematic diagram of the movement of the double helical roller and scraper in this invention; Figure 7 This is a cross-sectional view of the cylindrical body in this invention; Figure 8 This is a schematic diagram showing the alternating opening and closing of the discharge plate in this invention; Figure 9 This is a bottom view of the feed hood structure in this invention; Figure 10 This is a schematic diagram of the internal structure of the feed hood in this invention; Figure 11 This is a schematic diagram of the exploded assembly structure of the feed hood in this invention; Figure 12 This is a schematic diagram of the flow of volatile gas on the outside of the cylinder in this invention; Figure 13 This is a schematic diagram of the structure of cavity one, cavity two and cavity three in this invention.

[0019] Explanation of the labels in the diagram: 1. Internal mixer; 101. Mixing chamber; 102. Inclined protrusion; 2. Feed hood; 3. Premixing cylinder; 4. Feed pipe; 5. Feed hopper; 6. Top bolt; 7. Hydraulic cylinder; 8. Mounting rod; 9. Cylinder; 901. Feed chute; 902. Discharge chute; 10. Double spiral roller; 1001. Roller shaft; 1002. Spiral blade; 11. First motor; 12. Scraper; 13. Rotary drum; 14. Driven gear; 5. Transmission gear; 16. Mounting shaft; 17. Fixing plate; 18. Drive gear; 19. Crushing roller; 20. Second motor; 21. Discharge plate; 22. Electric push rod one; 23. Gate plate; 24. Electric push rod two; 25. Horizontal partition; 2501. Air inlet; 26. Vertical partition; 2601. Upper vent; 2602. Lower vent; 27. Axial partition; 28. Exhaust pipe; 29. ​​Exhaust fan. Detailed Implementation

[0020] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0021] First implementation method Please see Figures 1-8In one embodiment of the present invention, a feeding structure for a mixing equipment for recycling plastics includes a mixer 1, a feeding hood 2 fixedly connected to the upper end of the mixer 1, a premixing cylinder 3 fixedly passing through the feeding hood 2, a feeding pipe 4 fixedly connected to the upper end of the premixing cylinder 3, and a feeding hopper 5 fixedly connected to the upper end of the feeding pipe 4. Please see Figures 2-6 The premixing cylinder 3 includes a cylinder body 9, inside which a double helical roller 10 is provided. The double helical roller 10 includes a roller shaft 1001 and a pair of helical blades 1002 fixed on the roller shaft 1001 and rotating in opposite directions. One end of the roller shaft 1001 extends to the outside of the cylinder body 9 and is fixedly connected to the output shaft of a first motor 11. The housing of the first motor 11 is fixedly connected to the outer wall of the cylinder body 9. The first motor 11 drives the roller shaft 1001 to rotate, and the roller shaft 1001 drives the pair of helical blades 1002 to rotate, thus stirring the material inside the cylinder body 9. A scraper 12 is provided on the outside of the double helical roller 10. The scraper 12 is slidably connected to the inner wall of the cylinder body 9. Rotary drums 13 are fixedly connected to both ends. Rotary drums 13 are rotatably sleeved on the outside of roller shaft 1001. Rotary drums 13, away from the first motor 11, extend to the outside of cylinder body 9 and are fixedly connected to driven gears 14. Driven gears 14 mesh with transmission gears 15. Transmission gears 15 mesh with drive gears 18. Drive gears 18 are fixedly connected to the other end of roller shaft 1001 extending to the outside of cylinder body 9. Roller shaft 1001 drives drive gears 18 to rotate. Drive gears 18 drive driven gears 14 to rotate through transmission gears 15. Driven gears 14 drive rotary drums 13 to rotate. Rotary drums 13 drive scraper 12 to rotate circumferentially inside cylinder body 9. Please see Figure 4 and Figure 7 The lower part of the cylinder 9 is provided with a discharge trough 902. The inner wall of the discharge trough 902 is hinged with a discharge plate 21. The outer wall of the discharge plate 21 is hinged with an electric push rod 22. The end of the electric push rod 22 away from the discharge plate 21 is hinged to the inner wall of the feed hood 2. The electric push rod 22 drives the discharge plate 21 to rotate, so that the material in the cylinder 9 is discharged from the discharge plate 21. Please see Figure 2 , Figure 7 and Figure 8 The internal mixer 1 has a mixing chamber 101. The discharge chute 902 is a rectangular chute and is opened along the axial direction of the cylinder 9. The axial direction of the cylinder 9 is parallel to the axial direction of the mixing chamber 101, so that the material discharged from the discharge chute 902 is spread and filled along the axial direction of the mixing chamber 101.

[0022] Specifically, the materials to be mixed (recycled plastics and auxiliary additives) are placed into the feeding hopper 5, and the materials enter the cylinder 9 through the discharge pipe 4. The first motor 11 is started, and the double spiral roller 10 and scraper 12 work together to fully mix the materials. The pair of spiral blades 1002 rotating in opposite directions ensure that the materials are fully mixed in the axial direction of the cylinder 9. At the same time, the scraper 12, which moves in a circular motion, ensures that the materials are fully mixed in the circumferential direction, reducing the probability of the materials sinking to the bottom and adhering to the inner wall. The two work together to improve the mixing effect of materials of different specifications and shapes. After the mixing is completed, the electric push rod 22 is started, and the electric push rod 22 drives the discharge plate 21 to rotate, so that the materials are discharged from the cylinder 9 and enter the internal mixer 1. It should be noted that the circulating heating structure (not shown in the figure) and the unloading structure (not shown in the figure) of the internal mixer 1 are existing technologies and will not be described in detail in this application.

[0023] Compared to the traditional internal mixer feeding structure, this invention uses a premixing cylinder 3 located inside the feeding hood 2. The double spiral roller 10 and scraper 12 within the premixing cylinder 3 work together to mix the material in both the circumferential and axial directions, ensuring thorough mixing of different components, reducing the probability of fine particles settling to the bottom, and resulting in a uniform distribution of components. This shortens subsequent melting time and reduces energy consumption. Simultaneously, by opening a discharge trough 902 parallel to the axial direction of the mixing chamber 101, the material is evenly spread and filled along the axial direction of the mixing chamber 101, replacing the traditional center-point feeding method. This not only improves the uniformity of material filling but also increases the single-fill volume, fully utilizing the volume of the mixing chamber 101 and reducing the number of mixing cycles required to melt the same volume of recycled plastic, further reducing energy consumption.

[0024] Please see Figure 3 and Figure 5 The rotating drum 13 is a horizontally arranged cylindrical structure. The scraper 12 is in the shape of a gate. The transmission gear 15 is fixedly connected to the mounting shaft 16. The mounting shaft 16 is rotatably connected to the fixing plate 17. The fixing plate 17 is fixedly connected to the outer wall of the drum body 9.

[0025] Specifically, the drive gear 18 and the driven gear 14 are driven by the transmission gear 15. The material is circumferentially stirred by the U-shaped scraper 12. At the same time, when discharging, the scraper 12 pushes the material out of the discharge trough 902, which improves the discharge efficiency and reduces the material residue in the cylinder 9.

[0026] Please see Figure 2Above the mixing chamber 101, there is an upper top bolt 6 that is slidably connected to the inner wall of the mixing machine 1. The upper end of the upper top bolt 6 is fixedly connected to the movable end of the hydraulic cylinder 7. The upper end of the cylinder body of the hydraulic cylinder 7 is fixedly connected to the mounting rod 8. The mounting rod 8 is fixedly connected to the inner wall of the mixing machine 1. The upper end of the upper top bolt 6 is pointed. The inner wall of the mixing machine 1 above the mixing chamber 101 is provided with an inclined protrusion 102.

[0027] Specifically, the top bolt 6 with a pointed tip and the inclined protrusion 102 set on the inner wall of the internal mixer 1 are used to guide the material entering the inner cavity of the internal mixer 1, thereby improving the spreading and filling effect of the material in the internal mixing cavity 101.

[0028] Please see Figure 7 The cylinder 9 is a horizontally arranged hollow cylindrical structure with a feed chute 901 at its upper end that is connected to the feed pipe 4, and two discharge chute 902 are symmetrically located at the lower part of the cylinder 9.

[0029] For details, please refer to Figure 8 During feeding, the discharge plates 21 in the discharge troughs 902 on both sides are opened intermittently, so that the material periodically enters the mixing chamber 101 from the cavities on both sides of the top bolt 6, further improving the uniformity of material filling the mixing chamber 101. It should be noted that the existing mixing chamber 101 has an ∞-shaped cross section, and a spiral rotor (not shown in the figure) is provided in the mixing chamber 101. By alternately filling the material from both sides, the material can more easily enter the gap between the spiral rotor and the inner wall of the mixing chamber 101, thereby increasing the single filling amount.

[0030] Please see Figure 4 The feeding pipe 4 is a square pipe with a rectangular cross-section, and it is arranged along the axial direction of the cylinder 9. A gate 23 is slidably inserted inside the feeding pipe 4. An electric push rod 24 is fixedly connected to the end of the gate 23 away from the feeding pipe 4. The housing of the electric push rod 24 is fixedly connected to the outer wall of the feeding pipe 4.

[0031] Specifically, by providing a square-shaped feed pipe 4 along the axial direction of the cylinder 9, the material falling from the feeding hopper 5 can quickly fill the cylinder 9, increasing the feeding speed. At the same time, the electric push rod 24 drives the gate 23 to move laterally, realizing the opening and closing of the feed pipe 4. When the gate 23 closes the feed pipe 4, it reduces the overflow of volatile gases from the feed pipe 4. The volatile gases are the gaseous volatiles generated during the melting process of the water, residual solvents and decomposition products contained in the recycled plastic.

[0032] Please see Figure 3 and Figure 4 A crushing roller 19 is provided at the upper end of the feeding pipe 4 where it connects with the feeding hopper 5. One end of the crushing roller 19 extends to the outside of the feeding pipe 4 and is connected to the output shaft of the second motor 20.

[0033] Specifically, the second motor 20 drives the crushing roller 19 to rotate, crushing the material at the connection between the feed pipe 4 and the feeding hopper 5, reducing the volume of the material, making it easier to mix and fill, and reducing the probability of the feed pipe 4 getting blocked.

[0034] Second implementation method Based on the first implementation, please refer to Figures 9-13 A pair of horizontal partitions 25 are fixedly connected to the lower part of the cylinder 9. The outer ends of the horizontal partitions 25 are fixedly connected to the inner wall of the feed hood 2 and are positioned above the discharge chute 902. The feed hood 2, the discharge pipe 4, the cylinder 9, and the horizontal partitions 25 enclose a cavity 1. An axial partition 27 is fixedly connected to one end of the discharge pipe 4. The axial partition 27 divides the cavity 1 into two cavities 2 connected at one end. Multiple vertical partitions 26 are fixedly connected to the upper end of the horizontal partitions 25. The multiple vertical partitions 26 divide the cavity 1 into two cavities 2 connected at one end. The second cavity is divided into multiple third cavities. Multiple vertical partitions 26 are provided with upper vent holes 2601 and lower vent holes 2602 at intervals. The horizontal partition 25 has an air inlet 2501 at one end near the axial partition 27. The air inlet 2501 is connected to the cavity of the feed hood 2 located below the cylinder 9. The end of the feed hood 2 away from the axial partition 27 is fixedly connected to an exhaust pipe 28. The exhaust pipe 28 is fixedly connected to an exhaust fan 29. The exhaust pipe 28 is connected to the end of the first cavity away from the axial partition 27.

[0035] Specifically, during the internal mixing process, in order to promptly remove water vapor, low-molecular-weight volatiles, and entrained air generated by the material under high temperature and high pressure shearing, it is necessary to periodically raise the top bolt 6 to remove these gases. If these gases remain trapped in the sealed mixing chamber, they will hinder the uniform dispersion of the various components in the material, leading to uneven mixing. Please refer to [link to relevant documentation]. Figure 12 and Figure 13 During the periodic lifting of the top bolt 6, the volatile gas flows through the inner cavity of the internal mixer 1 and the inner cavity of the feed hood 2, and then enters the first cavity through the air inlet 2501. The exhaust fan 29 extracts the gas in the first cavity through the exhaust pipe 28, making the first cavity a negative pressure state. At the same time, under the guidance of the vertical partition 26 and the axial partition 27, the volatile gas flows along multiple cavities through multiple spaced and staggered upper vent holes 2601 and lower vent holes 2602, heating the cylinder 9, and then heating the material in the cylinder 9. This realizes the utilization of the heat of the volatile gas, reduces the temperature difference between the material to be fed and the plastic melt in the internal mixer 101, and improves the melting efficiency. Finally, the gas is discharged through the exhaust pipe 28 and the exhaust fan 29.

[0036] Compared to the traditional internal mixer feeding structure, this invention, through the cylinder 9, horizontal baffle 25, vertical baffle 26, and axial baffle 27 set inside the feeding hood 2, allows the volatile gas to fully contact the outer wall of the cylinder 9. The heat of the volatile gas is used to heat the cylinder 9 and the material inside the cylinder 9, thereby reducing the temperature difference between the material to be fed and the plastic melt, further improving the material melting efficiency. At the same time, the heat of the volatile gas is utilized to further reduce energy consumption.

[0037] Please see Figure 10 and Figure 11 The upper vent 2601 is located on the upper part of the vertical partition 26, and the lower vent 2602 is located on the lower part of the vertical partition 26. The upper vent 2601 and lower vent 2602 on adjacent vertical partitions 26 are staggered vertically.

[0038] Specifically, by using the upper vent 2601 and lower vent 2602, which are staggered and spaced apart, the volatile gas can be made into full contact with the outer wall of the cylinder 9, thereby achieving full heat exchange.

[0039] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A feed structure for a banburying apparatus for recycling plastic processing, characterized by, The equipment includes a mixer (1), the upper end of which is fixedly connected to a feed hood (2), a premixing cylinder (3) is fixedly connected through the feed hood (2), the upper end of the premixing cylinder (3) is fixedly connected to a discharge pipe (4), and the upper end of the discharge pipe (4) is fixedly connected to a feeding hopper (5). The premixing cylinder (3) includes a cylinder body (9), inside which is provided a double helical roller (10). The double helical roller (10) includes a roller shaft (1001) and a pair of helical blades (1002) fixed on the roller shaft (1001) and rotating in opposite directions. One end of the roller shaft (1001) extends to the outside of the cylinder body (9) and is fixedly connected to the output shaft of a first motor (11). The housing of the first motor (11) is fixedly connected to the outer wall of the cylinder body (9). A scraper (12) is provided on the outside of the double helical roller (10). The scraper (12) is slidably connected to the inner wall of the cylinder (9). Both ends of the scraper (12) are fixedly connected to the rotating drum (13). The rotating drum (13) is rotatably sleeved on the outside of the roller shaft (1001). The rotating drum (13) away from the first motor (11) extends to the outside of the cylinder (9) and is fixedly connected to the driven gear (14). The driven gear (14) meshes with the transmission gear (15). The transmission gear (15) meshes with the drive gear (18). The drive gear (18) is fixedly connected to the other end of the roller shaft (1001) extending to the outside of the cylinder (9). The lower part of the cylinder (9) is provided with a discharge trough (902), the inner wall of the discharge trough (902) is hinged with a discharge plate (21), the outer wall of the discharge plate (21) is hinged with an electric push rod (22), the end of the electric push rod (22) away from the discharge plate (21) is hinged with the inner wall of the feed hood (2), the electric push rod (22) drives the discharge plate (21) to rotate, so that the material in the cylinder (9) is discharged from the discharge plate (21); the internal mixer (1) is provided with a mixing chamber (101), the discharge trough (902) is a rectangular trough and is opened along the axial direction of the cylinder (9), the axial direction of the cylinder (9) is parallel to the axial direction of the mixing chamber (101), so that the material discharged from the discharge trough (902) is spread and filled along the axial direction of the mixing chamber (101); A pair of horizontal partitions (25) are fixedly connected to the lower part of the cylinder (9). The outer end of the horizontal partition (25) is fixedly connected to the inner wall of the feed hood (2) and is located above the discharge chute (902). The feed hood (2), the discharge pipe (4), the cylinder (9) and the horizontal partitions (25) enclose a cavity. An axial partition (27) is fixedly connected to one end of the discharge pipe (4). The axial partition (27) divides the cavity into two cavities connected at one end. A plurality of vertical partitions (26) are fixedly connected to the upper end of the horizontal partitions (25). The plurality of vertical partitions (26) divide the cavity into two cavities. The second part is divided into multiple cavities. Multiple vertical partitions (26) are provided with upper vent holes (2601) and lower vent holes (2602) spaced apart. The horizontal partition (25) has an air inlet (2501) at one end near the axial partition (27). The air inlet (2501) is connected to the cavity of the feed hood (2) located below the cylinder (9). The feed hood (2) is fixedly connected to an exhaust pipe (28) at one end away from the axial partition (27). The exhaust pipe (28) is fixedly connected to an exhaust fan (29). The exhaust pipe (28) is connected to the end of the first cavity away from the axial partition (27).

2. The feeding structure for a mixing equipment for recycling plastics according to claim 1, characterized in that, The rotating drum (13) is a horizontally arranged cylindrical structure. The scraper (12) is in the shape of a gate. The transmission gear (15) is fixedly connected to the mounting shaft (16). The mounting shaft (16) is rotatably connected to the fixing plate (17). The fixing plate (17) is fixedly connected to the outer wall of the drum body (9).

3. The feeding structure for a mixing equipment for recycling plastics according to claim 1, characterized in that, Above the mixing chamber (101) is an upper top bolt (6) that is slidably connected to the inner wall of the mixing machine (1). The upper end of the upper top bolt (6) is fixedly connected to the movable end of the hydraulic cylinder (7). The upper end of the cylinder body of the hydraulic cylinder (7) is fixedly connected to the mounting rod (8). The mounting rod (8) is fixedly connected to the inner wall of the mixing machine (1). The upper end of the upper top bolt (6) is pointed. The inner wall of the mixing machine (1) above the mixing chamber (101) is provided with an inclined protrusion (102).

4. The feeding structure for a mixing equipment for recycling plastics according to claim 1, characterized in that, The cylinder (9) is a horizontally arranged hollow cylindrical structure with a feed chute (901) at its upper end that communicates with the feed pipe (4) and two discharge chute (902) symmetrically located at the lower part of the cylinder (9).

5. The feeding structure for a mixing equipment for recycling plastics according to claim 1, characterized in that, The feeding pipe (4) is a square pipe with a rectangular cross section, and it is arranged along the axial direction of the cylinder (9). A gate (23) is slidably inserted inside the feeding pipe (4). An electric push rod (24) is fixedly connected to one end of the gate (23) away from the feeding pipe (4). The housing of the electric push rod (24) is fixedly connected to the outer wall of the feeding pipe (4).

6. The feeding structure for a mixing equipment for recycling plastics according to claim 1, characterized in that, A crushing roller (19) is provided at the connection between the upper end of the feeding pipe (4) and the feeding hopper (5). One end of the crushing roller (19) extends to the outside of the feeding pipe (4) and is connected to the output shaft of the second motor (20).

7. The feeding structure for a mixing equipment for recycling plastics according to claim 1, characterized in that, The upper vent (2601) is located on the upper part of the vertical partition (26), and the lower vent (2602) is located on the lower part of the vertical partition (26). The upper vent (2601) and lower vent (2602) on adjacent vertical partitions (26) are staggered vertically.

Images