Mixed film coating machine for expandable polystyrene

Abstract

The utility model relates to a mixed film coating machine for expandable polystyrene, and relates to the technical field of mixed film coating machine equipment.The mixed film coating machine comprises a mixing barrel, a stirring assembly, a driving assembly and a rack, the mixing barrel is fixedly connected with the rack, a main feeding pipe, a discharging pipe, a first film coating material pipe and an exhaust pipe are arranged on the mixing barrel, an opening and closing device is arranged on the discharging pipe, and the stirring assembly is connected with the driving assembly; the stirring assembly comprises a main shaft, a plurality of spiral belts and a plurality of feeding blades, the driving assembly is fixedly connected with the rack and used for driving the main shaft to rotate, the spiral belts are evenly distributed in the circumferential direction of the main shaft and fixedly connected with the main shaft, and the outer side wall of the main shaft is sleeved with two fixing frames; the multiple feeding blades are evenly distributed in the circumferential direction of the main shaft and located between the two fixing frames, the feeding blades are coaxially and fixedly connected with a feeding shaft, the feeding shaft sequentially penetrates through the two fixing frames along the axis of the feeding shaft, and a feeding motor is fixedly arranged on the machine frame. The device has the effect of preventing the polystyrene particles from being adhered in the transportation process.

Description

A mixing coating machine for expandable polystyrene Technical Field

[0001] This application relates to the field of mixing coating machine equipment technology, and in particular to a mixing coating machine for expandable polystyrene. Background Technology

[0002] Currently, expandable polystyrene is an important raw material in the chemical production field with broad application prospects. Due to its excellent thermal insulation, cushioning, and molding and processing properties, it is widely used in packaging, building insulation, and many other industries. With the continuous growth in demand for expandable polystyrene from various industries, the requirements for its product quality and production efficiency are also increasing.

[0003] In the traditional production and processing of expandable polystyrene, various methods have been adopted in the industry to address the potential problem of particle sticking during transportation, especially when unexpanded polystyrene granules are sold in bulk. Some companies choose to add a release agent to the storage container, simply mixing the release agent with the polystyrene granules to form a release film on the granule surface and prevent sticking. Other companies use vacuum packaging to reduce the contact between the granules and the external environment, thus reducing the possibility of sticking. Additionally, low-temperature storage is used to reduce the stickiness between granules and prevent them from sticking together. These methods have alleviated the problem of particle sticking to some extent.

[0004] However, while adding release agents can provide some degree of isolation, it increases production costs, and removing them afterwards is troublesome and may leave residues that affect product quality. Vacuum packaging not only increases packaging costs but is also prone to leaks due to improper handling during the packaging process, leaving the particles at risk of sticking together. Low-temperature storage requires additional refrigeration equipment and energy consumption, significantly increasing storage costs and hindering large-scale production and transportation. Summary of the Invention

[0005] To prevent polystyrene particles from sticking together during transportation, this application provides a mixing and coating machine for expandable polystyrene.

[0006] This application provides a mixing and coating machine for expandable polystyrene, which adopts the following technical solution:

[0007] A mixing and coating machine for expandable polystyrene includes a mixing cylinder, a stirring assembly, a drive assembly, and a frame. The mixing cylinder has its own axis arranged horizontally and its two ends are fixedly connected to the frame. The upper side of the mixing cylinder is provided with a main feed pipe, a first coating material pipe, and an exhaust pipe. The middle part of the lower side of the mixing cylinder is provided with a discharge pipe, which is equipped with an opening and closing device. The stirring assembly includes a main shaft, several spiral ribbons, and several feeding blades. The drive assembly is fixedly connected to the frame and is used to drive the main shaft to rotate. Several spiral ribbons are evenly arranged around the main shaft and fixedly connected to the main shaft. Two fixed frames are sleeved on the outer wall of the main shaft. Several feeding blades are evenly distributed around the main shaft and located between the two fixed frames. The feeding blades are coaxially fixedly connected to a feeding shaft. The feeding shaft passes through the two fixed frames in sequence along its own axis. A feeding motor for driving the feeding shaft to rotate is fixedly installed on the frame.

[0008] By adopting the above technical solution, it is possible to achieve coating treatment of expandable polystyrene particles to prevent them from sticking together during transportation; the spiral belt and feeding blades can stir and mix the material by rotating with the main shaft; the feeding motor drives the feeding shaft to rotate and make the feeding blades work, which can further improve the mixing effect of the material and drive the coated polystyrene particles to be discharged from the discharge pipe; the opening and closing device on the discharge pipe can control the discharge of the material.

[0009] Optionally, the drive assembly includes a stirring motor and a gearbox, both of which are fixedly connected to the frame. The driven shaft of the gearbox is coaxially fixedly connected to the main shaft, and the stirring motor drives the drive shaft of the gearbox to rotate.

[0010] By adopting the above technical solution, the driving shaft of the gearbox is driven by the stirring motor to rotate, and the driven shaft of the gearbox is coaxially and fixedly connected to the main shaft, which can stably drive the main shaft to rotate, realize the stirring of expandable polystyrene and coating material, and the speed can also be adjusted by using the gearbox, so that the stirring process can better meet the requirements.

[0011] Optionally, the main shaft sidewall is fixedly provided with a protrusion, and the fixing frame is provided with a groove corresponding to the protrusion. The fixing frame is slidably connected to both the main shaft and the feeding shaft along the main shaft axis.

[0012] By adopting the above technical solution, the combined use of the protrusion and the groove can make the main shaft drive the fixed frame to rotate synchronously, thereby driving the feeding blade to rotate with the main shaft, which helps to better achieve the mixing of expandable polystyrene particles and coating material; at the same time, when the fixed frame slides away from the protrusion, the fixed frame does not rotate with the main shaft, thereby enabling the feeding blade to deliver the coated polystyrene particles to the discharge pipe.

[0013] Optionally, the feeding shaft is coaxially fixedly connected to a driven gear, and the inner wall of the mixing cylinder is slidably connected to a ring along its own axis. The inner wall of the ring is coaxially rotatably connected to an internal gear ring that meshes with the driven gear. The output end of the feeding motor passes through the mixing cylinder and is coaxially fixedly connected to a driving gear. The driving gear is used to drive the internal gear ring to rotate, and the fixed frame and the driven gear slide synchronously in the same direction.

[0014] By adopting the above technical solution, the ring can slide along the axial direction of the inner wall of the mixing cylinder, and the fixed frame and the driven gear slide synchronously and in the same direction. The ring drives the fixed frame and the driven gear to slide, so that the groove is separated from the convex strip. The expandable polystyrene mixing and coating machine uses the feeding motor to drive the drive gear to rotate, which drives the internal gear ring meshed with it to rotate, and then drives the driven gear meshed with the internal gear ring to rotate, realizing the rotation of the feeding shaft, thereby driving the feeding blade to work and realizing the discharge of materials.

[0015] Optionally, the two ends of the feeding blades rotate in opposite directions.

[0016] By adopting the above technical solution, expandable polystyrene granules can be conveyed in different directions by the two ends of the feeding blades with different rotation directions. This helps to improve the mixing uniformity of expandable polystyrene granules and coating material in the mixing cylinder, allowing the expandable polystyrene granules to complete the coating better, preventing adhesion during transportation, and allowing the polystyrene granules in the mixing cylinder to be conveyed to the discharge pipe in the middle position for discharge.

[0017] Optionally, a number of driving cylinders are fixedly provided at one end of the ring, evenly distributed along its circumference. The cylinder bodies of the driving cylinders are located outside the mixing cylinder and are fixedly connected to the frame. A number of baffles are fixedly provided at one end of the fixed frame. The two ends of the internal gear ring, the driven gear and the ring along the main shaft axis are respectively in contact with the fixed frame and the baffles.

[0018] By adopting the above technical solution, the driving cylinder can push the ring to slide along the axial direction of the inner wall of the mixing cylinder, and then the baffle can make the internal gear ring, driven gear and fixed frame move synchronously, so as to adjust the position of the fixed frame and make the fixed frame disengage from the protrusion, thus realizing the feeding function of the feeding blade.

[0019] Optionally, the opening and closing device includes an opening and closing cylinder, an opening and closing shaft, and an arc-shaped cover. The cylinder body of the opening and closing cylinder is rotatably connected to the outer wall of the discharge pipe. The opening and closing shaft is rotatably connected to the discharge pipe along its own axis. One end of the opening and closing shaft extends out of the discharge pipe and is fixedly connected to a support rod. The end of the support rod away from the opening and closing shaft is rotatably connected to the telescopic end of the opening and closing cylinder. Several connecting brackets are fixedly connected between the opening and closing shaft and the arc-shaped cover. The inner wall of the arc-shaped cover abuts against the outer wall of the mixing cylinder.

[0020] By adopting the above technical solution, the opening and closing device, consisting of an opening and closing cylinder, an opening and closing shaft, and an arc-shaped cover, controls the opening and closing of the discharge pipe. The extension and retraction of the opening and closing cylinder drives the support rod to rotate the opening and closing shaft, which in turn drives the arc-shaped cover to open and close the discharge pipe, making it easier to control the material discharge process.

[0021] Optionally, the outer wall of the mixing cylinder is fitted with a jacket, the outer side of the jacket is fitted with a heat insulation layer, the upper side of the jacket is fitted with a cooling pipe, and a temperature measuring device is inserted into the side wall of the jacket.

[0022] By adopting the above technical solution, a jacket is installed on the outer wall of the mixing cylinder, an insulation layer is installed on the outside of the jacket, and a cooling pipe is installed on the upper side of the jacket. This can achieve cooling of the material inside the mixing cylinder, ensure the cooling effect, and improve the coating quality of expandable polystyrene particles.

[0023] Optionally, the outer wall of the mixing cylinder is provided with an inspection port, and an inspection cover is abutted against the outer wall of the mixing cylinder. A handle is fixedly provided on the outer wall of the inspection cover. One end of the handle near the lower end face of the inspection port is rotatably connected to the mixing cylinder. A pressure block is fixedly provided at the end of the inspection cover away from its own rotation axis. An abutment block that mates with the pressure block is fixedly provided on the outer wall of the mixing cylinder. A threaded rod passes through the pressure block. The threaded rod is used for threaded connection with the abutment block. The threaded rod is rotatably connected to the pressure block. A knob is coaxially fixedly connected at the end of the threaded rod away from the abutment block. A limit ring is coaxially fixedly connected between the knob and the threaded rod of the pressure block. A sensor is fixedly provided on the outer wall of the mixing cylinder.

[0024] By adopting the above technical solution, an inspection port and inspection cover are opened on the outer wall of the mixing cylinder to facilitate inspection and maintenance inside the mixing cylinder; a handle is provided on the inspection cover for easy operation to open or close the inspection cover; the cooperation of pressure block, abutment block, threaded rod, knob and limit ring can stably and reliably fix the inspection cover to ensure normal operation of the equipment, while facilitating the disassembly of the inspection cover for internal inspection and maintenance work; and a sensor is used to sense the opening and closing of the inspection cover.

[0025] Optionally, a second coating tube is also provided on the upper side of the mixing cylinder, and the main feed tube is located between the first coating tube and the second coating tube.

[0026] By adopting the above technical solution, the main feed pipe is located between the first coating material pipe and the second coating material pipe, which facilitates the feeding and mixing of materials and coating materials.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. It can achieve coating treatment of expandable polystyrene granules to prevent them from sticking together during transportation; the main feed pipe is located between the two first coating material pipes to facilitate the feeding and mixing of materials and coating materials; the spiral belt and feeding blades rotate with the main shaft to stir and mix the materials; the feeding motor drives the feeding shaft to rotate, which makes the feeding blades work, which can further improve the mixing effect of materials and drive the coated polystyrene granules to be discharged from the discharge pipe; the opening and closing device on the discharge pipe can control the discharge of materials;

[0029] 2. The driving shaft of the gearbox is driven by the stirring motor. The driven shaft of the gearbox is coaxially and fixedly connected to the main shaft, which can stably drive the main shaft to rotate, realize the stirring of expandable polystyrene and coating material. The speed can also be adjusted by using the gearbox to make the stirring process more in line with the requirements.

[0030] 3. The combined use of the convex strip and the groove allows the main shaft to drive the fixed frame to rotate synchronously, thereby causing the feeding blades to rotate with the main shaft, which helps to better mix expandable polystyrene granules and coating material; at the same time, when the fixed frame slides away from the convex strip, the fixed frame does not rotate with the main shaft, thus enabling the feeding blades to deliver the coated polystyrene granules to the discharge pipe. Attached Figure Description

[0031] Figure 1 is a schematic diagram of the overall structure of a mixing coating machine for expandable polystyrene.

[0032] Figure 2 is a schematic diagram of the mixing cylinder and the opening and closing device.

[0033] Figure 3 is an enlarged schematic diagram of part A in Figure 2.

[0034] Figure 4 is a schematic diagram of the stirring assembly.

[0035] Figure 5 is a schematic diagram of the main shaft and the spiral band.

[0036] Figure 6 is a structural schematic diagram of the fixed frame, the feeding shaft, and the drive mechanism that drives the feeding shaft.

[0037] Explanation of reference numerals in the attached drawings: 1. Mixing cylinder; 11. Main feed pipe; 12. First coating material pipe; 13. Discharge pipe; 14. Drive cylinder; 15. Jacket; 151. Insulation layer; 152. Cooling pipe; 153. Temperature measuring device; 16. Inspection port; 17. Abutment block; 18. Exhaust pipe; 19. Second coating material pipe; 2. Mixing assembly; 21. Main shaft; 211. Protruding strip; 22. Spiral belt; 23. Feeding blade; 24. Fixing frame; 241. Groove; 242. Baffle; 25. Feeding shaft; 251. Feeding motor; 252. Drive gear; 26. Ring; 27. Internal gear ring; 28. Driven gear; 3. Drive assembly; 31. Mixing motor; 32. Gearbox; 4. Frame; 5. Opening and closing device; 51. Opening and closing cylinder; 52. Opening and closing shaft; 53. Arc-shaped cover; 54. Support rod; 6. Sensor; 7. Inspection cover; 71. Handle; 72. Pressure block; 73. Threaded rod; 74. Knob; 75. Limit ring. Detailed Implementation

[0038] The present application will be further described in detail below with reference to all the accompanying drawings.

[0039] This application discloses a mixing coating machine for expandable polystyrene.

[0040] Referring to Figure 1, a mixing and coating machine for expandable polystyrene includes a mixing cylinder 1, a stirring assembly 2, a drive assembly 3, and a frame 4.

[0041] Referring to Figure 1, the mixing cylinder 1 is horizontally oriented, and its two ends are fixedly connected to the frame 4. The upper side of the mixing cylinder 1 is equipped with a main feed pipe 11, a first coating material pipe 12, a second coating material pipe 19, and an exhaust pipe 18. The main feed pipe 11 is located between the first coating material pipe 12 and the second coating material pipe 19, allowing the coating material to mix with polystyrene from different positions, thus improving the uniformity of the mixture. Since the coating material is a powder, when it is injected under positive pressure from the first coating material pipe 12 and the second coating material pipe 19, dust may overflow, requiring the exhaust pipe 18 to release the pressure.

[0042] Referring to Figure 2, a discharge pipe 13 is provided in the lower middle part of the mixing cylinder 1, and an opening and closing device 5 is provided on the discharge pipe 13. The opening and closing device 5 is used to control the opening and closing of the discharge pipe 13, thereby controlling the discharge of materials. The opening and closing device 5 includes an opening and closing cylinder 51, an opening and closing shaft 52, and an arc-shaped cover 53. The cylinder body of the opening and closing cylinder 51 is rotatably connected to the outer wall of the discharge pipe 13. The opening and closing shaft 52 is rotatably connected to the discharge pipe 13 along its own axis. One end of the opening and closing shaft 52 extends out of the discharge pipe 13 and is fixedly connected to a support rod 54. The end of the support rod 54 away from the opening and closing shaft 52 is rotatably connected to the telescopic end of the opening and closing cylinder 51. Several connecting brackets are fixedly connected between the opening and closing shaft 52 and the arc-shaped cover 53. The inner wall of the arc-shaped cover 53 abuts against the outer wall of the mixing cylinder 1. The opening and closing cylinder 51 is also a pneumatic cylinder. Its extension and retraction drive the support rod 54 to rotate the opening and closing shaft 52, which in turn drives the arc-shaped cover 53 to open and close the discharge pipe 13, making it easier to control the material discharge process. The arc-shaped cover 53 is generally made of stainless steel plate with an arc-shaped structure, which fits tightly against the outer wall of the mixing cylinder 1 to ensure sealing.

[0043] Referring to Figures 1 and 2, an inspection port 16 is provided on the outer wall of the mixing cylinder 1. The inspection port 16 is a rectangular opening on the mixing cylinder 1, facilitating inspection and maintenance of the interior of the mixing cylinder 1. An inspection cover 7, adapted to the inspection port 16, is abutted against the outer wall of the mixing cylinder 1, and the inspection cover 7 can completely cover the inspection port 16. A handle 71 is fixedly provided on the outer wall of the inspection cover 7. One end of the handle 71 near the lower end face of the inspection port 16 is rotatably connected to the mixing cylinder 1, and the inspection cover 7 is rotated by gripping the handle 71.

[0044] Referring to Figures 1 and 3, a pressure block 72 is fixedly installed at the end of the inspection cover 7 away from its own axis of rotation. An abutment block 17, which mates with the pressure block 72, is fixedly installed on the outer wall of the mixing cylinder 1. A threaded rod 73 passes through the pressure block 72 and is threadedly connected to the abutment block 17. The threaded rod 73 is rotatably connected to the pressure block 72. A knob 74 is coaxially fixedly connected to the end of the threaded rod 73 away from the abutment block 17. A limit ring 75 is coaxially fixedly connected between the knob 74 and the threaded rod 73 of the pressure block 72. By rotating the knob 74, the threaded rod 73 moves inward into the abutment block 17. Under the action of the limit ring 75, the pressure block 72 and the abutment block 17 are pressed against each other, thus closing the inspection cover 7. A sensor 6 is used to sense the opening and closing of the inspection cover 7. When the inspection cover 7 is opened, the sensor 6 receives a signal and transmits it to the stirring motor 31, causing the stirring motor 31 to stop working, improving safety during maintenance. A sealing ring is wrapped around the side wall of the inspection cover 7 to enhance the sealing between the inspection cover 7 and the mixing cylinder 1.

[0045] Referring to Figure 1, a jacket 15 is fitted around the outer wall of the mixing cylinder 1, and a cooling pipe 152 is provided on the upper side of the jacket 15. Frictional heat is generated during the mixing of polystyrene particles and coating material, requiring cooling. Cold water, cold oil, or other cooling media are injected into the jacket 15 through the cooling pipe 152 to reduce the heat of the material inside the mixing cylinder 1, thereby improving the coating quality of expandable polystyrene particles. An insulation layer 151 is fitted around the outer side of the jacket 15. The insulation layer 151 typically has a low thermal conductivity, effectively hindering heat conduction and preventing heat from the external environment from entering the jacket 15. This maintains the temperature stability of the low-temperature medium inside the jacket 15, improves cooling efficiency, reduces energy consumption, and saves operating costs. The jacket 15 is an annular cavity structure surrounding the outer wall of the mixing cylinder 1. The jacket 15 provides operating space at both the inspection port 16 and the discharge pipe 13. A temperature measuring device 153 is also inserted into the jacket 15 to detect the temperature inside the jacket 15 and maintain the operating temperature for the mixing and coating process.

[0046] Referring to Figure 4, the stirring assembly 2 includes a main shaft 21, several spiral ribbons 22, and several feeding blades 23. The several spiral ribbons 22 are evenly arranged around the main shaft 21 and fixedly connected to the main shaft 21. The spiral ribbons 22 and the main shaft 21 are fixed together by welding or bolting connecting rods.

[0047] Referring to Figures 4 and 5, two fixed frames 24 are fitted on the outer wall of the main shaft 21, and the spiral belt 22 and the feeding blades 23 are located between the two fixed frames 24. Several feeding blades 23 are evenly distributed around the circumference of the main shaft 21. The feeding blades 23 are coaxially fixedly connected to a feeding shaft 25. The feeding shaft 25 passes through the two fixed frames 24 in sequence along its own axis. The two ends of the feeding shaft 25 move synchronously with the fixed frames 24. The fixed frames 24 are used to install the feeding shaft 25. The feeding shaft 25 is rotatably connected to the fixed frames 24 along its own axis. The spiral belt 22 and the feeding blades 23 can stir and mix the material as the main shaft 21 rotates.

[0048] Referring to Figure 5, a protrusion 211 is fixedly provided on the side wall of the main shaft 21, and a groove 241 corresponding to the protrusion 211 is provided on the fixing frame 24. The fixing frame 24 is slidably connected to both the main shaft 21 and the feeding shaft 25 along the axial direction of the main shaft 21. The cooperation of the protrusion 211 and the groove 241 allows the main shaft 21 to drive the fixing frame 24 to rotate synchronously, thereby driving the feeding blade 23 to rotate with the main shaft 21, which helps to better achieve the mixing of expandable polystyrene particles and coating material; at the same time, when the fixing frame 24 slides away from the protrusion 211, the main shaft 21 rotates while the fixing frame 24 does not rotate with it, thereby enabling the feeding blade 23 to deliver the coated polystyrene particles to the discharge pipe 13.

[0049] Referring to Figures 4 and 6, a feeding motor 251 for driving the feeding shaft 25 to rotate is fixed on the frame 4. The feeding motor 251 can be a common three-phase asynchronous motor, connected to the feeding shaft 25 via a coupling, providing power for the rotation of the feeding shaft 25. A driven gear 28 is coaxially fixedly connected to the feeding shaft 25. A ring 26 is slidably connected to the inner wall of the mixing cylinder 1 along its own axis. An internal gear ring 27 that meshes with the driven gear 28 is coaxially rotatably connected to the inner wall of the ring 26. A driving gear 252 is coaxially fixedly connected to the output end of the feeding motor 251 through the mixing cylinder 1. The driving gear 252 drives the internal gear ring 27 to rotate. The fixed frame 24 and the driven gear 28 slide synchronously in the same direction. The feeding motor 251 drives the feeding shaft 25 to rotate, causing the feeding blades 23 to work, which can further improve the material mixing effect and drive the coated polystyrene particles to be discharged from the discharge pipe 13. The feeding motor 251 drives the drive gear 252 to rotate, which in turn drives the internal gear ring 27 that meshes with it to rotate, thereby causing the driven gear 28 that meshes with the internal gear ring 27 to rotate, realizing the rotation of the feeding shaft 25, which in turn drives the feeding blade 23 to work and realize the discharge of materials.

[0050] Referring to Figure 4, the two ends of the feeding blade 23 have opposite rotation directions. The feeding blade 23 can be a spiral blade structure, and the different rotation directions at its two ends allow expandable polystyrene particles to be conveyed in different directions, which helps to improve the uniformity of mixing of expandable polystyrene particles and coating material in the mixing cylinder 1, so that the expandable polystyrene particles can better complete the coating, prevent adhesion during transportation, and can convey the polystyrene particles in the mixing cylinder 1 to the discharge pipe 13 located in the middle for discharge.

[0051] Referring to Figures 4 and 6, a plurality of drive cylinders 14 are fixedly mounted at one end of the ring 26, evenly distributed along its circumference. The cylinder bodies of the drive cylinders 14 are located outside the mixing cylinder 1 and fixedly connected to the frame 4. A plurality of baffles 242 are fixedly mounted at one end of the fixed frame 24. The two ends of the internal gear ring 27, the driven gear 28, and the ring 26 along the axis of the main shaft 21 abut against the fixed frame 24 and the baffles 242, respectively. The drive cylinders 14 are generally pneumatic cylinders, providing power for the sliding of the ring 26. The baffles 242 are used to ensure that the ring 26, the internal gear ring 27, the driven gear 28, and the fixed frame 24 move synchronously. The drive cylinder 14 can push the ring 26 to slide along the axial direction of the inner wall of the mixing cylinder 1, and then the baffle 242 can make the internal gear ring 27, the driven gear 28 and the fixed frame 24 move synchronously, so as to adjust the position of the fixed frame 24 and make the fixed frame 24 disengage from the protrusion 211. At the same time, the internal gear ring 27 meshes with the drive gear 252 to realize the feeding function of the feeding blade 23.

[0052] Referring to Figure 1, the drive assembly 3 includes a stirring motor 31 and a reduction gearbox 32. Both the stirring motor 31 and the reduction gearbox 32 are fixedly connected to the frame 4. The driven shaft of the reduction gearbox 32 is coaxially and fixedly connected to the main shaft 21. The stirring motor 31 drives the drive shaft of the reduction gearbox 32 to rotate. The reduction gearbox 32 is a gear reducer, and its function is to convert the high-speed rotation of the stirring motor 31 into the appropriate speed required by the main shaft 21, making the stirring process more suitable for the requirements. The stirring motor 31 and the reduction gearbox 32 are fixedly connected to the frame 4 with bolts to ensure the stability of the connection. The driven shaft of the reduction gearbox 32 is coaxially and fixedly connected to the main shaft 21 through a coupling, which can stably drive the main shaft 21 to rotate. The stirring motor 31 and the drive shaft of the reduction gearbox 32 achieve synchronous rotation through a synchronous pulley and synchronous belt structure.

[0053] The specific working process of this application is as follows: the stirring motor 31 drives the main shaft 21 to rotate through the reduction gearbox 32. The protrusion 211 is embedded in the fixed frame 24, so the main shaft 21 drives the spiral belt 22 and the feeding blade 23 to rotate along the axis of the main shaft 21. After the coating is completed, one of the feeding blades 23 abuts against the lower side wall of the mixing cylinder 1, and the driving cylinder 14 pushes the ring 26 to move. The ring 26 drives the fixed frame 24 and the baffle 242 to move, thereby driving the driven gear 28 and the internal gear ring 27 to move, so that the internal gear ring 27 meshes with the driving gear 252. The feeding motor 251 drives the driving gear 252 to rotate, driving the feeding shaft 25 and the feeding blade 23 to rotate, and discharging the coated polystyrene particles from the discharge pipe 13.

[0054] The implementation principle of a mixing and coating machine for expandable polystyrene according to an embodiment of this application is as follows: Through a reasonable structural design, expandable polystyrene granules and coating material are fed into the mixing cylinder through corresponding feed pipes. A drive assembly drives a stirring assembly to mix the materials, ensuring a uniform coating of the granules and preventing adhesion during transport. Simultaneously, efficient mixing and discharge control are achieved using feeding blades and related transmission structures. Furthermore, cooling and insulation structures improve coating quality, and the maintenance structure facilitates equipment upkeep. Compared to traditional anti-adhesion methods, this reduces costs and improves production efficiency and product quality.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mixing and coating machine for expandable polystyrene, characterized in that: The system includes a mixing cylinder (1), a stirring assembly (2), a drive assembly (3), and a frame (4). The mixing cylinder (1) has its own axis arranged horizontally and its two ends are fixedly connected to the frame (4). The upper side of the mixing cylinder (1) is provided with a main feed pipe (11), a first coating material pipe (12), and an exhaust pipe (18). The middle part of the lower side of the mixing cylinder (1) is provided with a discharge pipe (13), and the discharge pipe (13) is provided with an opening and closing device (5). The stirring assembly (2) includes a main shaft (21), several spiral belts (22), and several feeding blades (23). The drive assembly (3) is connected to the frame (4). The main shaft (21) is fixedly connected and used to drive the main shaft (21) to rotate. Several spiral belts (22) are evenly arranged around the main shaft (21) and fixedly connected to the main shaft (21). Two fixed frames (24) are sleeved on the outer wall of the main shaft (21). Several feeding blades (23) are evenly distributed around the main shaft (21) and located between the two fixed frames (24). The feeding blades (23) are coaxially fixedly connected to the feeding shaft (25). The feeding shaft (25) passes through the two fixed frames (24) in sequence along its own axis. The frame (4) is fixedly equipped with a feeding motor (251) for driving the feeding shaft (25) to rotate.

2. The mixing and coating machine for expandable polystyrene according to claim 1, characterized in that: The drive assembly (3) includes a stirring motor (31) and a gearbox (32). Both the stirring motor (31) and the gearbox (32) are fixedly connected to the frame (4). The driven shaft of the gearbox (32) is coaxially fixedly connected to the main shaft (21). The stirring motor (31) drives the drive shaft of the gearbox (32) to rotate.

3. A mixing and coating machine for expandable polystyrene according to claim 1, characterized in that: The main shaft (21) has a protrusion (211) fixed on its side wall, and the fixing frame (24) has a groove (241) corresponding to the protrusion (211). The fixing frame (24) is slidably connected to both the main shaft (21) and the feeding shaft (25) along the axis of the main shaft (21).

4. A mixing and coating machine for expandable polystyrene according to claim 1, characterized in that: The feeding shaft (25) is coaxially fixedly connected to a driven gear (28). The inner wall of the mixing cylinder (1) is slidably connected to a ring (26) along its own axis. The inner wall of the ring (26) is coaxially rotatably connected to an internal gear ring (27) that meshes with the driven gear (28). The output end of the feeding motor (251) passes through the mixing cylinder (1) and is coaxially fixedly connected to a driving gear (252). The driving gear (252) is used to drive the internal gear ring (27) to rotate. The fixed frame (24) and the driven gear (28) slide synchronously in the same direction.

5. A mixing and coating machine for expandable polystyrene according to claim 1, characterized in that: The two ends of the feeding blade (23) rotate in opposite directions.

6. A mixing and coating machine for expandable polystyrene according to claim 4, characterized in that: One end of the ring (26) is fixed with several driving cylinders (14) evenly distributed along its circumference. The cylinder body of the driving cylinder (14) is located outside the mixing cylinder (1) and is fixedly connected to the frame (4). One end of the fixed frame (24) is fixed with several baffles (242). The two ends of the internal gear ring (27), the driven gear (28) and the ring (26) along the axis of the main shaft (21) respectively abut against the fixed frame (24) and the baffles (242).

7. A mixing and coating machine for expandable polystyrene according to claim 1, characterized in that: The opening and closing device (5) includes an opening and closing cylinder (51), an opening and closing shaft (52), and an arc-shaped cover (53). The cylinder body of the opening and closing cylinder (51) is rotatably connected to the outer wall of the discharge pipe (13). The opening and closing shaft (52) is rotatably connected to the discharge pipe (13) along its own axis. One end of the opening and closing shaft (52) extends out of the discharge pipe (13) and is fixedly connected to a support rod (54). The end of the support rod (54) away from the opening and closing shaft (52) is rotatably connected to the telescopic end of the opening and closing cylinder (51). Several connecting frames are fixedly connected between the opening and closing shaft (52) and the arc-shaped cover (53). The inner wall of the arc-shaped cover (53) abuts against the outer wall of the mixing cylinder (1).

8. A mixing and coating machine for expandable polystyrene according to claim 1, characterized in that: The outer wall of the mixing cylinder (1) is fitted with a jacket (15), the outer side of the jacket (15) is fitted with a heat insulation layer (151), the upper side of the jacket (15) is fitted with a cooling pipe (152), and the side wall of the jacket (15) is fitted with a temperature measuring device (153).

9. A mixing and coating machine for expandable polystyrene according to claim 1, characterized in that: The mixing cylinder (1) has an inspection port (16) on its outer side wall. An inspection cover (7) is abutted against the outer side wall of the mixing cylinder (1). A handle (71) is fixedly provided on the outer side wall of the inspection cover (7). One end of the handle (71) near the lower end face of the inspection port (16) is rotatably connected to the mixing cylinder (1). A pressure block (72) is fixedly provided on the end of the inspection cover (7) away from its own rotation axis. An abutting block (17) is fixedly provided on the outer wall of the mixing cylinder (1) to cooperate with the pressure block (72). A threaded rod (73) is passed through the pressure block (72). The threaded rod (73) is used for threaded connection with the abutting block (17). The threaded rod (73) is rotatably connected to the pressure block (72). A knob (74) is coaxially fixedly connected on the end of the threaded rod (73) away from the abutting block (17). A limit ring (75) is coaxially fixedly connected between the threaded rod (73) between the knob (74) and the pressure block (72). A sensor (6) is fixedly provided on the outer wall of the mixing cylinder (1).

10. A mixing and coating machine for expandable polystyrene according to claim 1, characterized in that: The mixing cylinder (1) is also provided with a second coating material pipe on its upper side, and the main feed pipe (11) is located between the first coating material pipe (12) and the second coating material pipe (19).

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