Energy-saving engineering plastic recycling, granulating and melting device

Abstract

This invention relates to the field of engineering plastics recycling technology, specifically disclosing an energy-saving engineering plastics recycling granulation and melting device. The device includes a base ring, a support frame fixedly mounted on the top of the base ring, a water ring cooler fixedly mounted on one side of the top of the base ring, a hot-melt mechanism fixedly mounted on the inner side of the support frame, and a granulation and forming mechanism located at the output end of the hot-melt mechanism, directly above the water ring cooler. The hot-melt mechanism includes a main mounting frame. This technical solution, through the cooperation of the drive module, the hot-melt mechanism, and the granulation and forming mechanism, enables integrated hot-melt granulation operations during use, reducing the need for additional equipment. The coordinated operation of these mechanisms reduces the overall energy consumption of the equipment, improves the efficiency of granulation operations, reduces production interruptions, and lowers the overall cost of engineering plastics recycling granulation.

Description

Technical Field

[0001] This invention relates to the field of engineering plastics recycling technology, and in particular to an energy-saving engineering plastics recycling granulation and melting device. Background Technology

[0002] Engineering plastic recycling granulation and melting equipment is the core equipment for melting and remanufacturing waste engineering plastic scraps and waste products. It is widely used in the plastic waste treatment process in the fields of automotive parts, electronics, building materials and other industries. Its operating efficiency and energy consumption level directly determine the production cost and resource utilization rate of the plastic recycling industry. With the large-scale development of the domestic plastic recycling industry, the market has put forward higher requirements for the granulation efficiency, integration and energy-saving performance of melting equipment. Melting equipment that can achieve integrated rapid granulation and lower energy consumption has become a product that the industry urgently needs to develop.

[0003] Chinese Patent No. CN205438947U discloses a melting device for recycling and granulating foamed plastics. It includes a primary melting device, a filter screen, and a secondary melting device. The discharge end of the primary melting device is detachably connected to the filter screen, and the filter screen is detachably connected to the feed end of the secondary melting device. The axis of the primary melting device is perpendicular to the axis of the secondary melting device. Both the primary and secondary melting devices are equipped with heating devices. The discharge end of the secondary melting device is equipped with an extrusion die.

[0004] The device exhibits poor granulation performance and fails to achieve efficient and continuous integrated granulation during actual production. Its parallel extrusion die head results in a small extrusion area, and the lack of an integrated cutting structure on the outer surface of the die head necessitates the addition of a separate cutting assembly and a matching electric drive system. The external cutting blade is difficult to precisely match with the extrusion rhythm, leading to uneven pellet length, excessive fragments, and poor pellet uniformity. Furthermore, the device lacks an effective mixing structure, resulting in uneven heating of the upper and lower layers of material during the hot-melt process. The molten plastic pellets at the bottom cannot fully mix with the incompletely melted material at the top, causing a large amount of unmelted material to continuously clog the filter screen, resulting in extrusion pressure fluctuations and material flow interruptions. This leads to uneven pellet thickness and even breakage, further deteriorating granulation quality. To alleviate these problems, production often requires increasing the heating temperature, extending the hot-melt time, or frequently stopping the machine to clean the filter screen. This not only renders the original energy-saving design of the device completely ineffective but also significantly reduces production efficiency. Ultimately, the overall granulation effect and production continuity fail to meet the actual needs of large-scale engineering plastic recycling. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving engineering plastic recycling granulation and melting device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides an energy-saving engineering plastic recycling granulation and melting device, including a base ring, a support frame fixedly installed on the top of the base ring, a water ring cooler fixedly installed on one side of the top of the base ring, a hot-melting mechanism fixedly installed on the inner side of the support frame, and a granulation and forming mechanism provided at the output end of the hot-melting mechanism, the granulation and forming mechanism being located directly above the water ring cooler. The hot-melting mechanism includes a main mounting frame, which is fixedly mounted in the middle of a support frame. A hot-melting tank is fixedly mounted in the middle of the main mounting frame. A drive module is provided on the top of the hot-melting tank. An agitation module is fixedly mounted on the output end of the drive module. The agitation module rotates inside the hot-melting tank. A granulation and forming mechanism is fixedly mounted on the bottom output end of the hot-melting tank. A transmission module is provided on one side of the hot-melting tank. The drive module is connected to the granulation and forming mechanism through the transmission module. An electric heating module is provided on the outer surface of the hot-melting tank.

[0007] Furthermore, the granulation molding mechanism includes a connecting pipe body, a discharge hopper is fixedly installed on the top of the connecting pipe body, the top of the discharge hopper is connected to the bottom output end of the hot melt tank, a bent pipe is fixedly installed on the bottom output end of the discharge hopper, a granulation module is fixedly installed on the outside of the bent pipe, and a cutting module is provided on the outside of the granulation module, the cutting module is covered on the outer surface of the granulation module.

[0008] Furthermore, the granulation module includes a granulation main pipe, which is located at the output end of the bent pipe. A switch valve is provided at the input end of the bent pipe. After the material is completely melted, opening the switch valve allows the molten plastic to be discharged downwards. A groove is provided at the bottom of the granulation main pipe, and an arc-shaped granulation mold is fixedly installed on the inner side of the groove. Extrusion molding granulation holes are provided on the outer surface of the granulation module in an arc-shaped arrangement at equal intervals. The extrusion molding granulation holes are connected to the granulation main pipe.

[0009] Furthermore, the cutting module includes an annular track, which is fixedly installed at the outer end of the granulation main pipe. A sliding ring is rotatably mounted on the outer side of the annular track, and a transmission component is fixedly installed on the outer side of the sliding ring. The transmission component and the transmission module are connected in a transmission connection. The cutting blade assembly is fixedly installed in a ring at equal intervals on the side of the sliding ring near the bent pipe.

[0010] Furthermore, the transmission assembly includes a bevel gear ring and a fixed side base plate. The fixed side base plate is fixedly installed on the outer middle of the granulation main tube. A bottom shaft is rotatably connected to the top of the fixed side base plate. A bevel gear is fixedly installed on the top of the bottom shaft. The top of the bevel gear is connected to the transmission module. The bevel gear and the bevel gear ring are meshed. The bevel gear ring is fixedly connected to the outer side of the sliding ring.

[0011] Furthermore, the cutter assembly includes a connecting plate, which is arranged in a ring at equal intervals and fixedly connected to the side of the sliding ring near the granulation main tube. A fixing rod is fixedly installed on the side of the connecting plate near the hot melt tank, and a granulation cutter is fixedly installed on the inner side of the fixing rod.

[0012] Furthermore, the drive module includes a heat-insulating sealing cover, which is installed on the top of the hot melt tank by screws. A fixed top frame is fixedly installed on one side of the top of the heat-insulating sealing cover, and a drive motor is fixedly installed on the top of the fixed top frame. The bottom output end of the drive motor is connected to the transmission module, and the output end of the transmission module is connected to the top of the agitation module through a coupling. A feeding valve is provided on one side of the top of the heat-insulating sealing cover, and a feeding hopper is fixedly installed at the top input end of the feeding valve. The bottom of the feeding valve is connected to the inside of the hot melt tank.

[0013] Furthermore, the transmission module includes a first synchronous pulley, a fourth synchronous pulley, and a side plate. The side plate is fixedly installed on the side of the heat-insulating sealing cover near the granulation main pipe. A second synchronous pulley is rotatably connected to the top outer end of the side plate. The first synchronous pulley is fixedly installed at the bottom output end of the drive motor. The bottom of the first synchronous pulley is connected to the top of the agitation module via a coupling. The first and second synchronous pulleys are connected by a synchronous belt drive. A connecting shaft is rotatably connected to the bottom outer end of the side plate. A third synchronous pulley is fixedly installed at the bottom of the connecting shaft. The fourth synchronous pulley is rotatably connected to the top of the mounting frame near the bottom shaft. The fourth and third synchronous pulleys are connected by a synchronous belt drive. A top shaft is fixedly connected to the bottom of the fourth synchronous pulley. The bottom of the top shaft is connected to the top of the bottom shaft via a one-way clutch.

[0014] Furthermore, the electric heating module includes an upper heat-insulating ring and a lower heat-insulating ring. The upper heat-insulating ring is fixedly connected to the outer surface of the hot melt tank, and the lower heat-insulating ring is fixedly connected to the outer surface of the connecting pipe. An upper electric heating coil is fixedly connected to the inner side of the upper heat-insulating ring, and a lower electric heating coil is fixedly connected to the inner side of the lower heat-insulating ring. The upper electric heating coil is attached to the outer wall of the hot melt tank for heating its interior, and the lower electric heating coil is attached to the inner wall of the connecting pipe for heating its interior. The portion of the outer surface of the hot melt tank outside the upper heat-insulating ring is provided with a heat-insulating layer. The surfaces of the hot melt tank, the upper electric heating coil, the connecting pipe, and the lower electric heating coil are all made of metal with good thermal conductivity, such as carbon steel, chromium zirconium copper, copper, tungsten copper alloy, austenitic stainless steel, aluminum alloy, etc., which can be selected according to requirements.

[0015] Furthermore, the agitation module includes a rotating shaft rotatably connected to the bottom of the heat-insulating sealing cover. The top of the rotating shaft is connected to the bottom of the first synchronous wheel via a coupling. Agitating plates are fixedly installed in a ring at equal intervals on the outer surface of the rotating shaft. An extrusion auger is fixedly installed at the bottom of the rotating shaft and rotatably disposed at the bottom of the hot melt tank. A support frame is rotatably connected to the lower end of the outer surface of the rotating shaft. The outer end of the support frame is connected to the interior of the hot melt tank. The rotating shaft is driven by a drive motor to rotate the extrusion auger in the opposite direction, which can cause the material to roll upwards. This, combined with the agitating plates, achieves a uniform heating and melting effect. By driving the extrusion auger to rotate in the forward direction, pressure is applied to discharge the hot melt plastic downwards, thereby promoting granulation.

[0016] Compared with the prior art, the beneficial effects of the present invention are: In this invention, through the coordinated operation of the drive module, the hot-melting mechanism and the granulation molding mechanism, a single drive motor can synchronously drive the stirring module and the cutting module, eliminating the need for a separate cutting drive system and electric components, directly reducing the overall energy consumption of the equipment. By setting up a reversible extrusion auger and stirring plate, the material at the bottom of the tank can be pushed upward during the hot-melting stage. Combined with circumferential stirring, the upper and lower layers of plastic material can be fully contacted, ensuring that the material is heated in a consistent state, reducing the formation of unmelted material, and avoiding operation interruptions caused by material blockage. By setting up an electric heating module and a multi-layer heat insulation structure, the heat radiation to the outside during the heating process is reduced. Combined with a sealing structure and a feeding valve, the heat loss of the tank is reduced. By setting up an independent heating structure for the conveying section, the molten plastic is prevented from cooling and solidifying during the conveying process, ensuring stable material conveying. By matching the speed of the cutter rotation and the running speed of the plastic extrusion with the transmission module, and combining the integrated granulation and cutter structure, the granules are cut directly at the extrusion position, so that the size of the formed granules remains uniform and the generation of broken material is reduced. By optimizing the granulation mold structure to increase the extrusion area, the granulation output per unit time is increased. The air pressure inside the tank is balanced by the exhaust structure matched with the sealing cover, ensuring the stable operation of hot melt. The whole process realizes the integrated operation of hot melt mixing, material conveying, extrusion granulation, and cooling and shaping. The simplified equipment configuration can achieve a certain energy saving effect and reduce the overall investment in engineering plastic recycling granulation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure in this invention; Figure 3 This is a schematic diagram of the structure viewed from below in this invention; Figure 4 This is a schematic diagram of the disassembled structure of the electrothermal module in this invention; Figure 5 This is a schematic diagram of the internal structure of the hot melt tank in this invention; Figure 6 This is a schematic diagram of the drive module and agitation module structure in this invention; Figure 7 This is a top view of the structure in this invention; Figure 8 This is a schematic diagram of the cutter module near the granulation main tube in this invention.

[0018] In the diagram: 1. Base ring; 2. Support frame; 3. Water ring cooler; 4. Hot melt mechanism; 41. Electric heating module; 411. Upper heat insulation ring; 412. Lower heat insulation ring; 413. Upper electric heating coil; 414. Lower electric heating coil; 42. Hot melt tank; 43. Transmission module; 431. First synchronous pulley; 432. Fourth synchronous pulley; 433. Side plate; 434. Second synchronous pulley; 435. Connecting shaft; 436. Third synchronous pulley; 437. Top shaft; 44. Agitation module; 441. Rotating shaft; 442. Agitation plate; 443. Extrusion auger; 444. Support frame; 45. Drive module; 451. Heat insulation sealing cover; 45 2. Fixed top frame; 453. Drive motor; 454. Feeding valve; 455. Feeding hopper; 46. Mounting main frame; 5. Granulation mechanism; 51. Connecting pipe; 52. Discharge hopper; 53. Bending pipe; 54. Granulation module; 541. Granulation main pipe; 542. Tank; 543. Arc-shaped granulation mold; 544. Extrusion granulation hole; 55. Cutting module; 551. Circular track; 552. Sliding ring; 553. Transmission assembly; 5531. Bevel gear ring; 5532. Fixed side base plate; 5533. Bottom shaft; 5534. Bevel gear; 56. Cutting assembly; 561. Connecting plate; 562. Fixing rod; 563. Granulation cutter. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 8 In this embodiment of the invention, an energy-saving engineering plastic recycling granulation and melting device includes a base ring 1, a support frame 2 fixedly installed on the top of the base ring 1, a water ring cooler 3 fixedly installed on one side of the top of the base ring 1, a hot melt mechanism 4 fixedly installed on the inner side of the support frame 2, and a granulation and forming mechanism 5 provided at the output end of the hot melt mechanism 4, which is located directly above the water ring cooler 3. The hot-melting mechanism 4 includes a mounting frame 46, which is fixedly mounted in the middle of the support frame 2. A hot-melting tank 42 is fixedly mounted in the middle of the mounting frame 46. A drive module 45 is provided on the top of the hot-melting tank 42. An agitation module 44 is fixedly mounted on the output end of the drive module 45 and rotates inside the hot-melting tank 42. A granulation and forming mechanism 5 is fixedly mounted on the bottom output end of the hot-melting tank 42. A transmission module 43 is provided on one side of the hot-melting tank 42. The drive module 45 is connected to the granulation and forming mechanism 5 via the transmission module 43. The transmission connection of the type mechanism 5, the outer surface of the hot melt tank 42 is provided with an electric heating module 41, and the overall equipment is supported by the base ring 1 and the support frame 2, which can provide stable placement and operation conditions for the hot melt mechanism 4, the granulation and molding mechanism 5 and the water ring cooler 3. By mounting the hot melt mechanism 4 inside the support frame 2, the equipment can centrally complete the heating and melting of waste engineering plastics. The hot melt mechanism 4 is fixed to the hot melt tank 42 by the mounting main frame 46, which can keep the core area of ​​the hot melt operation fixed. The hot melt tank 42 is equipped with an external electric heating module 41, which continuously provides the required heat source to the inside of the tank, thereby heating and melting the engineering plastic material. A drive module 45 is set on the top of the hot melt tank 42 to drive the internal stirring module 44, which can stir the material during the hot melting process, making the material more evenly heated. A transmission module 43 is arranged on the side of the hot melt tank 42, which can synchronously link the drive module 45 with the granulation and forming mechanism 5 to work. After the material is hot melted, it can directly cooperate with the granulation and forming mechanism 5 to carry out granulation processing. By setting the granulation and forming mechanism 5 directly above the water ring cooler 3, the formed plastic granules can fall directly into the water ring cooler 3 for cooling. The entire structure works together to connect the processes of plastic melting, forming and cooling, reduce the excess energy consumption of individual processes, simplify the operation process of plastic recycling and granulation, reduce the number of equipment components, and effectively reduce the overall energy consumption and operating cost of engineering plastic recycling and granulation.

[0021] Please see Figures 1-5 and Figure 8The granulation molding mechanism 5 includes a connecting pipe body 51. A discharge hopper 52 is fixedly installed on the top of the connecting pipe body 51. The top of the discharge hopper 52 is connected to the bottom output end of the hot melt tank 42. A bent pipe 53 is fixedly installed on the bottom output end of the discharge hopper 52. A granulation module 54 is fixedly installed on the outside of the bent pipe 53. A cutter module 55 is provided on the outside of the granulation module 54. The cutter module 55 covers the outer surface of the granulation module 54. By setting the discharge hopper 52 to receive the molten plastic discharged from the hot melt tank 42, the material output from the tank can be smoothly received, allowing the molten plastic to be smoothly introduced into the connecting pipe body 51. By connecting the bent pipe 53 to the lower end of the discharge hopper 52, it is possible to... By changing the material conveying direction, the molten plastic can be accurately conveyed to the subsequent processing position. By assembling a granulation module 54 on the outside of the bent pipe 53, the conveyed molten plastic can be extruded and molded. By covering the outside of the granulation module 54 with a cutting module 55, the cutting process can be completed at the same time as the molten plastic is extruded and molded. There is no need to add an external cutting device and a corresponding drive structure, which can reduce the overall supporting components of the equipment and reduce the energy consumption during the operation of the equipment. The entire granulation and molding mechanism has 5 layers working together to complete the continuous operation of material conveying, extrusion molding, and granule cutting in a closed pipe structure, avoiding the exposure and loss of molten plastic during the conveying and molding process.

[0022] Please see Figures 1-5 and Figure 8 The granulation module 54 includes a granulation main pipe 541, which is located at the output end of the bent pipe 53. A groove 542 is formed at the bottom of the granulation main pipe 541, and an arc-shaped granulation mold 543 is fixedly installed inside the groove 542. Extrusion molding granulation holes 544 are evenly spaced and arranged in an arc shape on the outer surface of the granulation module 54. The extrusion molding granulation holes 544 are internally connected to the granulation main pipe 541. By setting the granulation main pipe 541 at the output end of the bent pipe 53 to receive molten plastic, it can centrally collect and transport the molten material, allowing the molten plastic to stably accumulate and store extrusion pressure within a closed space. The groove 542 at the bottom of the granulation main pipe 541 further enhances the granulation module's performance. It also incorporates an arc-shaped granulation mold 543, which can fix the installation position of the molding component, allowing the mold to fit the material output channel stably. By arranging the extrusion molding granulation holes 544 at equal intervals on the surface of the arc-shaped granulation mold 543, the effective channels for material extrusion can be increased, allowing more strip-shaped molten material to be extruded per unit time, thereby increasing the volume of material extrusion. The arc-shaped array of openings can make reasonable use of the mold surface space, preventing local material accumulation during the material extrusion process, and allowing the molten plastic to be evenly extruded from each molding hole, continuously providing regular strip-shaped material for subsequent cutting operations, ensuring the continuous operation of granulation processing.

[0023] Please see Figures 1-5 and Figure 8 The cutter module 55 includes an annular track 551, which is fixedly installed at the outer end of the granulation main pipe 541. A sliding ring 552 is rotatably mounted on the outer side of the annular track 551. A transmission assembly 553 is fixedly installed on the outer side of the sliding ring 552, and the transmission assembly 553 is connected to the transmission module 43. Cutter sets 56 are fixedly installed in a ring at equal intervals on the side of the sliding ring 552 near the bent pipe 53. By setting the annular track 551 at the outer end of the granulation main pipe 541, the running path of the sliding ring 552 can be defined, allowing the sliding ring 552 to rotate smoothly along a predetermined trajectory. The transmission assembly is mounted on the outer side of the sliding ring 552. The component 553 is connected to the transmission module 43, which can drive the sliding ring 552 to rotate with the power source of the whole set of equipment, without the need to add a separate power component. By arranging the cutter group 56 in a ring on one side of the sliding ring 552, the cutter group 56 can move in a circular motion synchronously with the sliding ring 552, so that the cutter group 56 can continuously sweep across the mold discharge position and complete the cutting operation with the extruded strip material. Relying on a unified power system to drive the component to rotate can reduce the number of power equipment used. At the same time, the cooperation between the track and the sliding ring 552 can reduce the resistance during operation, allowing the cutting action to continue and continuously cooperate with the granulation module 54 to complete the granulation.

[0024] Please see Figures 2-7 The transmission assembly 553 includes a bevel gear ring 5531 and a fixed side base plate 5532. The fixed side base plate 5532 is fixedly installed on the outer middle of the granulation main pipe 541. A bottom shaft 5533 is rotatably connected to the top of the fixed side base plate 5532. A bevel gear 5534 is fixedly installed on the top of the bottom shaft 5533. The top of the bevel gear 5534 is connected to the transmission module 43. The bevel gear 5534 and the bevel gear ring 5531 are meshed. The bevel gear ring 5531 is fixedly connected to the outer side of the sliding ring 552. By setting the fixed side base plate 5532 on the outer middle of the granulation main pipe 541, support can be provided for the bottom shaft 5533. The positioning allows the bottom shaft 5533 to remain in place and rotate normally. By adding a bevel gear 5534 to the top of the bottom shaft 5533 and connecting it to the transmission module 43, the power transmitted by the transmission module 43 can be delivered to the bevel gear 5534. Through the meshing of the bevel gear 5534 and the bevel gear ring 5531, the direction of power transmission can be changed, so that the power can be smoothly delivered to the sliding ring 552. The entire transmission component relies on the existing power link to complete the power transfer, without the need to add an additional power device. This simplifies the equipment components and allows the power to be smoothly transmitted to the cutting structure, ensuring the continuous operation of the cutting process.

[0025] Please see Figure 8The cutter assembly 56 includes connecting plates 561. The connecting plates 561 are arranged in a ring at equal intervals and fixedly connected to the sliding ring 552 near the granulation main pipe 541. A fixing rod 562 is fixedly installed on the side of the connecting plates 561 near the hot melt tank 42. A granulation cutter 563 is fixedly installed on the inner side of the fixing rod 562. By arranging the connecting plates 561 at equal intervals in a ring on the inner side of the sliding ring 552, regular installation points can be provided for subsequent cutting components, allowing multiple cutting structures to be evenly distributed on the outer side of the granulation main pipe 541. 1. The inner side is equipped with a fixing rod 562 to connect the granulation cutter 563, which can stably limit the working position of the granulation cutter 563, so that the granulation cutter 563 can rotate synchronously with the sliding ring 552. Multiple sets of granulation cutters 563 circulate through the mold discharge position, which can continuously cut the extruded molten plastic strip. The evenly arranged cutter structure can complete the cutting operation in turn, which can increase the frequency of the overall cutting operation. At the same time, the working posture of the cutter is maintained by the integrated fixing structure, and it continuously cooperates with the granulation module 54 to complete the continuous granulation process.

[0026] Please see Figures 1-6 The drive module 45 includes a heat-insulating sealing cover 451, which is installed on the top of the hot melt tank 42 by screws. A fixed top bracket 452 is fixedly installed on one side of the top of the heat-insulating sealing cover 451, and a drive motor 453 is fixedly installed on the top of the fixed top bracket 452. The bottom output end of the drive motor 453 is connected to the transmission module 43, and the output end of the transmission module 43 is connected to the top of the agitation module 44 through a coupling. A feeding valve 454 is provided on one side of the top of the heat-insulating sealing cover 451, and a feeding hopper 455 is fixedly installed at the top input end of the feeding valve 454. The bottom of the feeding valve 454 is connected to the inside of the hot melt tank 42. By setting the heat-insulating sealing cover 451 on the top of the hot melt tank 42 for closed installation, the top opening of the hot melt tank 42 can be sealed, reducing the loss of heat from the inside of the tank. The fixed top frame 452 is equipped with a drive motor 453, which can stably fix the working position of the drive motor 453, so that the drive motor 453 can continuously output power. By connecting the output end of the drive motor 453 to the transmission module 43 and the stirring module 44 respectively, a single power source can be used to provide operating power for the stirring and melting and transmission granulation structures simultaneously. By installing a feeding valve 454 and a feeding hopper 455 on the top of the heat-insulating sealing cover 451, a controllable material feeding channel can be formed, so that the material can be smoothly fed into the hot melt tank 42 through the feeding hopper 455 and the feeding valve 454. The feeding valve 454 can be adjusted to open and close according to the working status, and can close the feeding position during the hot melt operation to further reduce heat leakage. The overall structure can centrally integrate the related functions of feeding, sealing and power output, simplify the equipment structure layout and reduce equipment energy consumption.

[0027] Please see Figures 1-6 The transmission module 43 includes a first synchronous pulley 431, a fourth synchronous pulley 432, and a side plate 433. The side plate 433 is fixedly installed on the side of the heat-insulating sealing cover 451 near the granulation main pipe 541. A second synchronous pulley 434 is rotatably connected to the top outer end of the side plate 433. The first synchronous pulley 431 is fixedly installed at the bottom output end of the drive motor 453. The bottom of the first synchronous pulley 431 is connected to the top of the agitation module 44 via a coupling. The first synchronous pulley 431 and the second synchronous pulley 434 are connected by a synchronous belt drive. A connecting shaft 435 is rotatably connected to the bottom outer end of the side plate 433. A third synchronous pulley 436 is fixedly mounted on the bottom of the main frame 46. A fourth synchronous pulley 432 is rotatably connected to the top of the main frame 46 near the bottom shaft 5533. The fourth synchronous pulley 432 and the third synchronous pulley 436 are connected by a synchronous belt drive. A top shaft 437 is fixedly connected to the bottom of the fourth synchronous pulley 432. The bottom of the top shaft 437 is connected to the top of the bottom shaft 5533 via a one-way clutch. By setting a one-way clutch, when the drive motor 453 rotates in reverse for stirring, the power is cut off at the one-way clutch, and the cutter module 55 remains stationary, preventing the cutter from reversing and interfering with the mold; .... When the motor 453 rotates forward for extrusion, the one-way clutch engages, driving the cutting module 55 to operate synchronously for cutting. By providing side plates 433 on the side of the heat-insulating sealing cover 451 to provide rotation mounting points for each synchronous pulley component, the overall layout of the power transmission structure can be standardized. By setting the first synchronous pulley 431 at the output end of the drive motor 453, the drive motor 453 can directly drive the agitation module 44 to work. At the same time, the first synchronous pulley 431 is linked to the second synchronous pulley 434 by a synchronous belt, which can transmit power downwards. The second synchronous pulley 434 is supported by the connecting shaft 435. The power source, combined with the third synchronous pulley 436, can continuously transmit power to the fourth synchronous pulley 432. The fourth synchronous pulley 432 then transmits power to the bottom shaft 5533 through the top shaft 437, which can completely realize the multi-stage transfer and transmission of power. The entire transmission module 43 relies on the cooperation of multiple sets of synchronous pulleys and synchronous belts to complete the power transmission. It can divert the power of a single drive motor 453 to the stirring module 44 and the cutting module 55, without the need to add independent power equipment. This simplifies the equipment configuration and allows the stirring, melting, cutting, and granulation processes to operate synchronously, continuously ensuring the orderly progress of the overall equipment operation process.

[0028] Please see Figures 1-4The electric heating module 41 includes an upper heat-insulating ring 411 and a lower heat-insulating ring 412. The upper heat-insulating ring 411 is fixedly connected to the outer surface of the hot melt tank 42, and the lower heat-insulating ring 412 is fixedly connected to the outer surface of the connecting pipe 51. An upper electric heating coil 413 is fixedly connected to the inner side of the upper heat-insulating ring 411, and a lower electric heating coil 414 is fixedly connected to the inner side of the lower heat-insulating ring 412. The upper electric heating coil 413 is fitted to the outer wall of the hot melt tank 42 for heating its interior, and the lower electric heating coil 414 is fitted to the inner wall of the connecting pipe 51 for heating its interior. By installing the upper electric heating coil 413 inside the upper heat-insulating ring 411, heat can be continuously supplied to the hot melt tank 42, so that the engineering plastic inside the tank can be heated. The material can be kept at a suitable temperature to complete the melting process. The upper heat insulation ring 411 wraps around the outside of the upper electric heating coil 413, which can prevent heat from dissipating outward and reduce energy loss during the heating process. By installing the lower electric heating coil 414 inside the lower heat insulation ring 412, the connecting pipe 51 can be continuously heated, so that the molten plastic flowing in the pipe will not cool down and solidify. The lower heat insulation ring 412 can retain the heat around the pipe and maintain the flow state of the material inside the pipe. The two sets of heating components correspond to different working areas to carry out heating work. Together with the external insulation components, they can maintain the temperature of the material's environment in different zones, reduce the workload of the heating equipment, and allow the melting and conveying processes to be carried out stably.

[0029] Please see Figure 6The agitation module 44 includes a rotating shaft 441, which is rotatably connected to the bottom of the heat-insulating sealing cover 451. The top of the rotating shaft 441 is connected to the bottom of the first synchronous pulley 431 via a coupling. Agitating plates 442 are fixedly installed in a ring at equal intervals on the outer surface of the rotating shaft 441. An extrusion auger 443 is fixedly installed on the bottom of the rotating shaft 441 and is rotatably disposed inside the bottom of the hot melt tank 42. A support frame 444 is rotatably connected to the lower end of the outer surface of the rotating shaft 441. The outer end of the support frame 444 is connected to the inside of the hot melt tank 42. The rotating shaft 441 is connected to the first synchronous pulley 431 via a coupling, which can receive the power output by the drive motor 453, allowing the rotating shaft 441 to rotate continuously inside the hot melt tank 42. Multiple sets of agitator plates 442 are installed on the outside of the rotating shaft 441, which can agitate the material in the tank during rotation, allowing the material to fully contact the heat source. By setting an extrusion auger 443 at the bottom of the rotating shaft 441, the flow direction of the material can be changed, allowing the material at the bottom to be turned upwards. Together with the agitator plates 442, the overall material is mixed. By attaching a support frame 444 at the lower end of the rotating shaft 441, the force generated when the rotating shaft 441 is running can be distributed, allowing the rotating shaft 441 to maintain a normal rotation posture. The entire set of components operates synchronously with the power, which can make the material heated more evenly and reduce the situation of the material not being completely melted. The extrusion auger 443 can also push the material outward after the material is melted, connecting to the subsequent granulation process, so that the hot melting and feeding actions are carried out in a continuous manner.

[0030] The working principle of this invention is as follows: During application, the electric heating module 41 is activated, the upper electric heating coil 413 heats the hot melt tank 42, and the lower electric heating coil 414 heats the connecting pipe 51. The upper heat insulation ring 411 is wrapped around the outside of the upper electric heating coil 413, and the lower heat insulation ring 412 is wrapped around the outside of the lower electric heating coil 414. The part of the outer surface of the hot melt tank 42 that is not wrapped by the upper heat insulation ring 411 is provided with a heat insulation layer to reduce heat loss during the heating process. During this period, the overall temperature of the equipment gradually increases, completing the preheating preparation of all parts in contact with the material.

[0031] After preheating, open the feeding valve 454 and feed the engineering plastic waste to be processed into the hot melt tank 42 through the feeding hopper 455. After feeding, close the feeding valve 454 to prevent heat loss and material overflow during the hot melt process. The heat-insulating sealing cover 451 is installed on the top of the hot melt tank 42. The top of the heat-insulating sealing cover 451 can be equipped with an exhaust and smoke extraction structure according to actual production needs. This structure can promptly discharge the smoke and accumulated gas generated by the heating and melting of the material inside the hot melt tank 42 during the plastic hot melt operation, keeping the internal air pressure of the tank stable and preventing excessively high internal air pressure from affecting the material hot melt progress. Start the drive motor 453. The output of the drive motor 453 drives the first synchronous pulley 431 to rotate. The first synchronous pulley 431 drives the rotating shaft 441 to rotate through the coupling. The rotating shaft 441 drives the stirring plate 442 and the extrusion auger 443 to rotate in the opposite direction. The extrusion auger 443 pushes the material at the bottom of the hot melt tank 42 upward. The stirring plate 442 drives the material in the tank to mix circumferentially, so that the upper and lower layers of material are in full contact. The support frame 444 supports the lower end of the rotating shaft 441, improves the coaxiality of the rotating shaft 441 during rotation, and avoids the shaking of the rotating shaft 441 from affecting the stirring and conveying effect. The material gradually completes the melting process under the continuous stirring and heating action.

[0032] Once the material is completely melted, the switch valve at the input end of the bent pipe 53 is opened. The drive motor 453 drives the rotating shaft 441 to rotate the extrusion auger 443 in the forward direction. The extrusion auger 443 applies downward pressure to the molten plastic, discharging the molten plastic through the bottom output end of the hot melt tank 42 into the discharge hopper 52. The discharge hopper 52 guides the molten plastic into the bent pipe 53, which then transports the molten plastic into the granulation main pipe 541. The lower electric heating coil 414 continuously heats the connecting pipe 51 to prevent the molten plastic from cooling and solidifying during transport. Simultaneously, the first synchronous pulley 431 drives the second synchronous pulley 441 through the synchronous belt. The second synchronous pulley 434 rotates, driving the connecting shaft 435 to rotate. The connecting shaft 435 drives the third synchronous pulley 436 to rotate. The third synchronous pulley 436 drives the fourth synchronous pulley 432 to rotate via a synchronous belt. The fourth synchronous pulley 432 drives the top shaft 437 to rotate. The top shaft 437 drives the bottom shaft 5533 to rotate via a coupling. The bottom shaft 5533 drives the bevel gear 5534 to rotate. The bevel gear 5534 meshes with the bevel gear ring 5531, driving the bevel gear ring 5531 to rotate. The bevel gear ring 5531 drives the sliding ring 552 to rotate along the annular track 551. The sliding ring 552 drives the connecting plate 561. The connecting plate 561 rotates, causing the fixing rod 562 to rotate, which in turn drives the granulating cutter 563 to rotate. The transmission module 43, through the transmission ratio settings of multiple sets of synchronous pulleys, ensures that the cutter's rotation speed matches the molten plastic extrusion speed. After the molten plastic enters the granulation main tube 541, it is extruded through the extrusion forming granulation holes 544 on the surface of the arc-shaped granulation mold 543 under the continuous pressure of the extrusion auger 443. The granulating cutter 563 continuously rotates along the outer surface of the arc-shaped granulation mold 543. The arc-shaped structure of the arc-shaped granulation mold 543 keeps the granulating cutter 563 in contact with the mold surface, thus extruding the strip-shaped molten plastic... Plastic is cut into granules, and the cut granules fall into the water ring cooler 3 under gravity. The water ring cooler 3 cools and shapes the granules. During use, the base ring 1 provides the mounting base for the support frame 2 and the water ring cooler 3. The support frame 2 provides support for the main mounting frame 46. The main mounting frame 46 provides fixed support for the hot melt tank 42. The fixed side base plate 5532 provides rotational support for the bottom shaft 5533. The fixed top frame 452 provides mounting support for the drive motor 453. The heat insulation sealing cover 451 seals the top of the hot melt tank 42. In conjunction with the closed state of the feeding valve 454, heat loss is further reduced.

[0033] This device simultaneously drives the stirring module 44 and the cutting module 55 via the same drive motor 453, eliminating the need for a separate cutting drive system and reducing overall energy consumption. The hot melt tank 42 is equipped with a reversible extrusion auger 443 and a stirring plate 442. Reverse rotation mixes the upper and lower layers of material, preventing uneven heating and reducing the generation of unmelted material. This avoids clogging the filter structure due to unmelted material. The cutting module 55 is integrated outside the granulation module 54 and driven by the same system. The cutting speed matches the extrusion speed of the molten plastic, ensuring uniform particle size and reducing fragmentation. The arc-shaped granulation mold 543 uses arc-shaped extrusion forming holes 544 to increase the extrusion area and improve the yield per unit time. The extrusion auger 443 provides conveying pressure to the molten plastic when rotating in the forward direction, ensuring the continuous extrusion process and avoiding material flow interruption. The electric heating module 41 is equipped with a heat insulation structure on the outside to reduce heat radiation and lower energy consumption during the heating process. The connecting pipe 51 is equipped with an independent heating and insulation structure on the outside to prevent the molten plastic from cooling and solidifying during the conveying process, ensuring the normal operation of the granulation process. The feeding valve 454 and the feeding hopper 455 enable controllable feeding. At the same time, the feeding valve 454 is closed during the hot melting process to reduce heat loss and improve the energy-saving performance of the equipment. An exhaust and smoke exhaust structure can be added to the top of the heat-insulated sealing cover 451 to promptly discharge the smoke generated by the hot melting operation, balance the internal air pressure of the tank, and allow the material hot melting operation to be carried out stably and continuously.

Claims

1. An energy-saving engineering plastic recycling granulation and melting device, characterized in that, Includes a base ring (1), a support frame (2) is fixedly installed on the top of the base ring (1), a water ring cooler (3) is fixedly installed on one side of the top of the base ring (1), a hot melt mechanism (4) is fixedly installed on the inner side of the support frame (2), and a granulation molding mechanism (5) is provided at the output end of the hot melt mechanism (4), and the granulation molding mechanism (5) is located directly above the water ring cooler (3); The hot melt mechanism (4) includes a mounting frame (46), which is fixedly mounted in the middle of the support frame (2). A hot melt tank (42) is fixedly mounted in the middle of the mounting frame (46). A drive module (45) is provided on the top of the hot melt tank (42). A stirring module (44) is fixedly mounted on the output end of the drive module (45). The stirring module (44) rotates inside the hot melt tank (42). A granulation and forming mechanism (5) is fixedly mounted on the bottom output end of the hot melt tank (42). A transmission module (43) is provided on one side of the hot melt tank (42). The drive module (45) is connected to the granulation and forming mechanism (5) through the transmission module (43). An electric heating module (41) is provided on the outer surface of the hot melt tank (42).

2. The energy-saving engineering plastic recycling granulation and melting device according to claim 1, characterized in that, The granulation molding mechanism (5) includes a connecting pipe (51), a discharge hopper (52) is fixedly installed on the top of the connecting pipe (51), the top of the discharge hopper (52) is connected to the bottom output end of the hot melt tank (42), a bent pipe (53) is fixedly installed on the bottom output end of the discharge hopper (52), a granulation module (54) is fixedly installed on the outside of the bent pipe (53), a cutter module (55) is provided on the outside of the granulation module (54), and the cutter module (55) is covered on the outer surface of the granulation module (54).

3. The energy-saving engineering plastic recycling granulation and melting device according to claim 2, characterized in that, The granulation module (54) includes a granulation main pipe (541), which is located at the output end of the bent pipe (53). A groove (542) is provided at the bottom of the granulation main pipe (541), and an arc-shaped granulation mold (543) is fixedly installed on the inner side of the groove (542). Extrusion molding granulation holes (544) are provided on the outer surface of the granulation module (54) in an arc shape at equal intervals. The extrusion molding granulation holes (544) are connected to the granulation main pipe (541).

4. The energy-saving engineering plastic recycling granulation and melting device according to claim 3, characterized in that, The cutter module (55) includes an annular track (551), which is fixedly installed at the outer end of the granulation main pipe (541). A sliding ring (552) is rotatably mounted on the outer side of the annular track (551). A transmission assembly (553) is fixedly installed on the outer side of the sliding ring (552). The transmission assembly (553) and the transmission module (43) are connected in a transmission connection. The cutter assembly (56) is fixedly installed on the side of the sliding ring (552) near the bent pipe (53) with equal spacing in a ring.

5. The energy-saving engineering plastic recycling granulation and melting device according to claim 4, characterized in that, The transmission assembly (553) includes a bevel gear ring (5531) and a fixed side base plate (5532). The fixed side base plate (5532) is fixedly installed on the outer middle of the granulation main tube (541). The top of the fixed side base plate (5532) is rotatably connected to a bottom shaft (5533). The top of the bottom shaft (5533) is fixedly installed with a bevel gear (5534). The top of the bevel gear (5534) is connected to the transmission module (43). The bevel gear (5534) and the bevel gear ring (5531) are meshed. The bevel gear ring (5531) is fixedly connected to the outer side of the sliding ring (552).

6. The energy-saving engineering plastic recycling granulation and melting device according to claim 5, characterized in that, The cutter assembly (56) includes a connecting plate (561), which is arranged in a ring at equal intervals and fixedly connected to the sliding ring (552) on the side near the granulation main pipe (541). A fixing rod (562) is fixedly installed on the side of the connecting plate (561) near the hot melt tank (42), and a granulation cutter (563) is fixedly installed on the inner side of the fixing rod (562).

7. The energy-saving engineering plastic recycling granulation and melting device according to claim 1, characterized in that, The drive module (45) includes a heat-insulating sealing cover (451), which is installed on the top of the hot melt tank (42) by screws. A fixed top frame (452) is fixedly installed on one side of the top of the heat-insulating sealing cover (451). A drive motor (453) is fixedly installed on the top of the fixed top frame (452). The bottom output end of the drive motor (453) is connected to the transmission module (43). The output end of the transmission module (43) is connected to the top of the stirring module (44) through a coupling. A feeding valve (454) is provided on one side of the top of the heat-insulating sealing cover (451). A feeding hopper (455) is fixedly installed at the top input end of the feeding valve (454). The bottom of the feeding valve (454) is connected to the inside of the hot melt tank (42).

8. The energy-saving engineering plastic recycling granulation and melting device according to claim 7, characterized in that, The transmission module (43) includes a first synchronous pulley (431), a fourth synchronous pulley (432), and a side plate (433). The side plate (433) is fixedly installed on the side of the heat-insulating sealing cover (451) near the granulation main pipe (541). A second synchronous pulley (434) is rotatably connected to the top outer end of the side plate (433). The first synchronous pulley (431) is fixedly installed at the bottom output end of the drive motor (453). The bottom of the first synchronous pulley (431) is connected to the top of the agitation module (44) through a coupling. The first synchronous pulley (431) and the second synchronous pulley (434) are connected by a synchronous belt drive. The bottom outer end of the side plate (433) is rotatably connected to a connecting shaft (435). The bottom of the connecting shaft (435) is fixedly installed with a third synchronous pulley (436). The fourth synchronous pulley (432) is rotatably connected to the top of the mounting frame (46) near the bottom shaft (5533). The fourth synchronous pulley (432) and the third synchronous pulley (436) are connected by a synchronous belt drive. The bottom of the fourth synchronous pulley (432) is fixedly connected to a top shaft (437). The bottom of the top shaft (437) is connected to the top of the bottom shaft (5533) through a one-way clutch.

9. The energy-saving engineering plastic recycling granulation and melting device according to claim 8, characterized in that, The electric heating module (41) includes an upper heat insulation ring (411) and a lower heat insulation ring (412). The upper heat insulation ring (411) is fixedly connected to the outer surface of the hot melt tank (42), and the lower heat insulation ring (412) is fixedly connected to the outer surface of the connecting pipe (51). An upper electric heating coil (413) is fixedly connected to the inner side of the upper heat insulation ring (411), and a lower electric heating coil (414) is fixedly connected to the inner side of the lower heat insulation ring (412). The upper electric heating coil (413) is attached to the outer wall of the hot melt tank (42) for heating its interior, and the lower electric heating coil (414) is attached to the inner wall of the connecting pipe (51) for heating its interior.

10. An energy-saving engineering plastic recycling granulation and melting device according to claim 9, characterized in that, The stirring module (44) includes a rotating shaft (441), which is rotatably connected to the bottom of the heat-insulating sealing cover (451). The top of the rotating shaft (441) is connected to the bottom of the first synchronous wheel (431) through a coupling. Stirring plates (442) are fixedly installed on the outer surface of the rotating shaft (441) in a ring at equal intervals. An extrusion auger (443) is fixedly installed on the bottom of the rotating shaft (441). The extrusion auger (443) is rotatably disposed at the bottom of the hot melt tank (42). A support frame (444) is rotatably connected to the lower end of the outer surface of the rotating shaft (441). The outer end of the support frame (444) is connected to the interior of the hot melt tank (42).

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