Multi-mode and solvent gradient combined regenerated fiber material sorting system and method
By combining multimodal and solvent gradient sorting systems, the problem of insufficient pretreatment in traditional recycled fiber material sorting has been solved, achieving efficient and uniform fiber raw material processing and high-value application, and improving dissolution efficiency and sorting accuracy.
Patent Information
- Application Number
- CN202510883111.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-28
- Publication Date
- 2025-10-31
Smart Images
Figure CN120861433A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of regenerated fiber materials with multimodal and solvent gradient integration, and particularly to a sorting system and method for regenerated fiber materials with multimodal and solvent gradient integration. Background Technology
[0002] In traditional fiber regeneration processes, the simplistic nature of solvent systems often leads to low dissolution efficiency and uneven fiber performance, limiting the high-value applications of regenerated fibers. In recent years, multimodal solvent technology has significantly improved the dissolution capacity of biomass raw materials such as cellulose and chitin through the synergistic effect of composite solvents (e.g., ionic liquids / organic solvents / water systems). However, phase separation and molecular weight degradation during dynamic dissolution still require optimization. Solvent gradient strategies (e.g., gradually adjusting solvent polarity or pH) can directionally regulate the swelling-dissolution behavior of cellulose and reduce damage to crystalline regions, but single gradient modes are difficult to adapt to complex raw materials. Existing research attempts to combine multimodal and gradient methods, such as using binary solvent gradient switching (DMAC / LiCl→NaOH / urea), which has initially demonstrated its advantages in maintaining fiber polymerization degree. However, the gradient control precision is insufficient, and there is a lack of precise design for the multi-level structure (porosity, orientation) of regenerated fibers. How to achieve efficient deconstruction and performance reconstruction of fiber materials through the gradient dynamic control of multimodal solvents has become a key technological breakthrough.
[0003] The system consists of a multimodal solvent supply unit, a gradient control module, a fiber sorting bin, and a regeneration and recovery device. The solvent supply unit forms a multimodal system by dynamically mixing ionic liquids and organic solvents. The gradient control module adjusts the solvent ratio, temperature, and flow rate according to a preset program to create a spatiotemporal gradient field. In the sorting bin, the fiber material undergoes selective dissolution by the gradient solvent. Undissolved components (such as lignin and impurities) are mechanically sieved out, and the dissolved cellulose is precipitated out through antisolvent in the regeneration device, achieving high-purity fiber regeneration. The system monitors the dissolution status in real time using online sensors and optimizes gradient parameters in a closed-loop manner to ensure sorting efficiency and fiber performance.
[0004] Traditional recycled fiber material sorting systems suffer from low efficiency and insufficient sorting accuracy in practical applications. The main reason is the lack of an effective pretreatment process. Untreated fiber raw materials often contain impurities or have uneven structures, resulting in insufficient dissolution by multimodal solvents. To address this issue, a recycled fiber material sorting system and method combining multimodal and solvent gradient methods are proposed. Summary of the Invention
[0005] The purpose of this invention is to provide a multimodal and solvent gradient combined recycled fiber material sorting system and method, which aims to improve the problem that the existing technology lacks an effective pretreatment step and that untreated fiber raw materials often contain impurities or have uneven structures.
[0006] To achieve the above objectives, the present invention provides the following technical solution: A multimodal and solvent gradient combined recycled fiber material sorting system includes a base, a pretreatment mechanism installed on the top of the base, an elastic mechanism on one side of the pretreatment mechanism, a conveying and sorting mechanism on the top of the base, a cleaning mechanism on one side of the pretreatment mechanism, a fusion mechanism installed on the top of the base, and a cooling and heating mechanism on one side of the fusion mechanism. The pretreatment mechanism includes a treatment box, the top of which is fixedly connected to the top of the base. A screen one is rotatably connected to the inner wall of the treatment box. A screen two is installed on the top of the screen one. Limiting blocks are fixedly connected to both sides of the bottom of the screen two. Grooves are provided on the outside of both the treatment box and the screen two. Fasteners are installed on the inner wall of the grooves. A drive assembly is fixedly connected to one side of the treatment box. A collection box is slidably connected to one side of the treatment box. Preferably, the drive assembly includes a motor, one side of which is fixedly connected to one side of the processing box. A transmission rod is fixedly connected to the drive end of the motor. Multiple elliptical disks are fixedly connected to the outside of the transmission rod. A rotating disk is fixedly connected to one side of the transmission rod. The outside of the elliptical disks is in contact with one side of the screen. Preferably, grooves are provided on both inner walls of the screen one, and the outer side of the limiting block is slidably connected to the inner wall of the groove; Preferably, the elastic mechanism includes a fixed plate, one side of which is fixedly connected to one side of the processing box, and a shell is rotatably connected to both sides of the top of the fixed plate. A sliding block is slidably connected to the inner wall of the shell, and an extension column is fixedly connected to the top of the sliding block. A spring is sleeved on the outside of the extension column, and the top of the extension column is rotatably connected to the bottom of the screen. Preferably, one end of the spring is fixedly connected to one side of the housing, and the other end of the spring is fixedly connected to one side of the sliding block; Preferably, the conveying and sorting mechanism includes a first conveyor belt, the bottom of which is located on the top of the base, a second conveyor belt at the top left end of the base, a support frame fixedly connected to the outside of the first conveyor belt, a detector fixedly connected to the bottom of the support frame, a robotic arm at the top of the base, and a box on one side of the first conveyor belt. Preferably, the cleaning mechanism includes a connecting rod, one side of which is rotatably connected to one side of the rotating disk, and the other side of which is rotatably connected to a connecting plate. Slide rails are fixedly connected to the inner walls of both sides of the conveyor belt, and sliders are slidably connected to one side of the slide rails. A cleaning plate is fixedly connected to the adjacent side of the two sliders, and the top of the cleaning plate is in contact with one side of the conveyor belt. Preferably, the fusion mechanism includes a fusion box, the bottom of which is fixedly connected to the top of the base. A second motor is installed on the top of the fusion box, a rotating rod is fixedly connected to the drive end of the second motor, scraper plates are fixedly connected to both sides of the rotating rod, a rotating plate is fixedly connected to the bottom of the rotating rod, a plurality of protruding balls are fixedly connected to the top of the rotating plate, and a feed plate is fixedly connected to the top of the fusion box. Preferably, the cooling and heating mechanism includes a cooling box, the bottom of which is fixedly connected to the top of the base. A pump is fixedly connected to one side of the cooling box, and a cooling pipe is fixedly connected to the output end of the pump. The other end of the cooling pipe is fixedly connected to one side of the cooling box. A protective shell is fixedly connected to the top of the base. A heater is installed on the top of the cooling box, and a heating rod is fixedly connected to the bottom of the heater. A conveying pump is fixedly connected to one side of the protective shell. A conveying pipe is fixedly connected to one end of the conveying pump, and an eddy current separator is fixedly connected to the other end of the conveying pipe. The outside of the cooling pipe is in contact with the outside of the fusion box and the inner wall of the protective shell.
[0007] A multimodal sorting method combining solvent gradient and regenerated fiber materials is used as follows: S1. The raw material enters the processing box through the second conveyor belt and falls on the top of the second screen. The first motor is started, which drives the transmission rod and the elliptical disc to rotate, hitting the first screen to make it vibrate, so that the raw material is evenly distributed and impurities are screened out. The impurities fall into the collection box. The fasteners are loosened and the second screen is slid to make it intersect with the holes of the first screen, changing the hole diameter to accommodate different impurity sizes. The extension column and spring assist in stabilizing the vibration and improving the screening efficiency. S2. The screened raw materials are conveyed to conveyor belt one by vibration. The detector performs quality inspection on the raw materials. The robotic arm transfers unqualified materials to the feed plate, qualified materials are sent into the box, and unqualified materials enter the fusion box for further processing. S3. When the transmission rod rotates, it drives the rotating disk and the connecting rod to move the connecting plate. The connecting plate drives the cleaning plate to slide along the slide rail to remove residual raw materials on the surface of the conveyor belt and prevent them from adhering. S4. The raw materials entering the melting box are heated by the heater and heating rod. The second motor drives the rotating rod to rotate, which in turn drives the scraper and rotating plate to turn the materials. The convex ball further stirs the bottom material to prevent accumulation and improve the dissolution efficiency. S5. Start the extraction pump to pump the coolant from the cooling tank into the cooling pipe to cool the material in the fusion tank. The conveying pump then sends the processed material through the conveying pipe into the eddy current separator for final sorting and recycling.
[0008] In summary, the present invention has at least one of the following beneficial technical effects: 1. In this invention, the high-frequency vibration of the screen driven by the elliptical disk, combined with the adjustable double-layer screen structure, significantly improves the screening efficiency and uniformity of the recycled fiber raw materials. The elastic buffer mechanism effectively stabilizes the vibration amplitude and reduces mechanical wear. The modular screen design allows for quick adjustment of the aperture through fasteners, flexibly adapting to different impurity sizes and achieving precise sorting. The overall structure enhances the impurity removal rate while ensuring uniform dispersion of fiber materials, providing ideal pretreatment conditions for subsequent multimodal solvent treatment.
[0009] 2. In this invention, when the transmission rod rotates, it drives the rotating disk to rotate. At this time, the rotation of the rotating disk drives the connecting rod to swing. The swing of the connecting rod can drive the connecting plate to move, so that the connecting plate drives the cleaning plate to slide stably on the slide rail. This linkage mechanism realizes automatic cleaning of the conveyor belt through mechanical transmission, effectively preventing raw materials from adhering and ensuring the continuous and efficient operation of the conveyor belt. The cooperative design of the slide rail and the slider ensures the stability of the cleaning process and avoids jamming. The overall structure is simple and reliable, which reduces the need for manual maintenance, improves the continuous operation efficiency of the pretreatment system, and extends the service life of the conveyor belt.
[0010] 3. In this invention, uniform heating and efficient turning of materials are achieved, effectively preventing material accumulation and significantly improving dissolution efficiency. The linkage design of the cooling pipe and the eddy current separation equipment realizes continuous processing of heating-cooling-separation, ensuring stable material performance. The convex ball structure enhances the mixing effect of the bottom material, avoiding local overheating or agglomeration. The whole system has a high degree of automation, greatly improving the processing efficiency of recycled fibers, while ensuring the consistency of product quality and providing ideal conditions for subsequent recycling. Attached Figure Description
[0011] Figure 1 This is a three-dimensional schematic diagram of the regenerated fiber material sorting system and method combining multimodal and solvent gradient proposed in this invention; Figure 2 This is a schematic diagram of the support frame of the multimodal and solvent gradient combined recycled fiber material sorting system and method proposed in this invention; Figure 3 This is a schematic diagram of the structure of screen one in the multimodal and solvent gradient combined recycled fiber material sorting system and method proposed in this invention. Figure 4 This is a schematic diagram of the connecting plate of the multimodal and solvent gradient combined recycled fiber material sorting system and method proposed in this invention. Figure 5 This is a schematic diagram of the limiting block of the multimodal and solvent gradient combined recycled fiber material sorting system and method proposed in this invention. Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 This is a schematic diagram of the cooling box structure of the multimodal and solvent gradient combined recycled fiber material sorting system and method proposed in this invention; Figure 8 This is a schematic diagram of the convex sphere structure of the multimodal and solvent gradient combined recycled fiber material sorting system and method proposed in this invention.
[0012] The components include: 1. Base; 2. Pre-treatment mechanism; 21. Processing box; 22. Screen one; 23. Screen two; 24. Restricting block; 25. Restricting groove; 26. Groove; 27. Fastener; 28. Drive assembly; 281. Motor one; 282. Transmission rod; 283. Elliptical disk; 284. Rotating disk; 29. Collection box; 3. Elastic mechanism; 31. Fixing plate; 32. Shell; 33. Sliding block; 34. Extension column; 35. Spring; 4. Conveying and sorting mechanism; 41. Conveyor belt one; 42. Conveyor belt two; 43. Support frame; 44. 45. Detector; 46. Robotic arm; 57. Box body; 68. Cleaning mechanism; 59. Connecting rod; 50. Connecting plate; 51. Slide rail; 52. Slider; 53. Cleaning plate; 60. Fusion mechanism; 61. Fusion box; 62. Motor II; 63. Rotating rod; 64. Scraper; 65. Rotating plate; 66. Convex ball; 67. Feed plate; 78. Cooling and heating mechanism; 79. Cooling box; 70. Extraction pump; 71. Cooling pipe; 72. Protective shell; 73. Heater; 74. Heating rod; 75. Conveying pump; 76. Conveying pipe; 77. Eddy current separator. Detailed Implementation
[0013] The following is in conjunction with the appendix Figure 1 -Appendix Figure 8 The present invention will be further described in detail below.
[0014] Reference Figures 2 to 4 The multimodal and solvent gradient combined recycled fiber material sorting system provided by this invention includes a base 1, which provides a stable support platform for the entire system, ensuring the structural stability of each mechanism during operation. A pretreatment mechanism 2 is installed on the top of the base 1. The pretreatment mechanism 2 achieves primary sorting of raw materials through vibrating screening, laying the foundation for subsequent precise sorting. An elastic mechanism 3 is provided on one side of the pretreatment mechanism 2 to improve the impurity separation effect. A conveying and sorting mechanism 4 is provided on the top of the base 1. The conveying and sorting mechanism 4 achieves material diversion through a double conveyor belt design. A cleaning mechanism 5 is provided on one side of the pretreatment mechanism 2. The cleaning mechanism 5 achieves automatic cleaning through linkage transmission to prevent conveyor belt residue from affecting sorting accuracy. A fusion mechanism 6 is installed on the top of the base 1. The fusion mechanism 6 promotes material fusion through mechanical stirring and thermal action, improving the homogeneity of recycled materials. A cooling and heating mechanism 7 is provided on one side of the fusion mechanism 6. The cooling and heating mechanism 7 adopts a gradient temperature control system to achieve precise control of the material phase change process. Specifically, the pretreatment unit 2 vibrates and screens the raw materials, the elastic unit 3 enhances the separation of impurities, the conveying and sorting unit 4 diverts materials through a double belt, the cleaning unit 5 automatically removes residues, the fusion unit 6 combines mechanical stirring and thermal action to improve the homogeneity of the materials, and the cooling and heating unit 7 uses gradient temperature control to precisely regulate the phase change process. All modules work together to achieve fully automated processing from raw material sorting and impurity removal to material fusion, ultimately outputting high-purity recycled fibers.
[0015] The pretreatment mechanism 2 includes a treatment box 21, which is used to process materials. The top of the treatment box 21 is fixedly connected to the top of the base 1. A screen 22 is rotatably connected to the inner wall of the treatment box 21. The screen 22 vibrates due to the periodic impact of the elliptical disc 283. A screen 23 is installed on the top of the screen 22. The screen 23 can be adjusted laterally, and the screen size can be infinitely adjusted by the staggered holes. Limiting blocks 24 are fixedly connected to both sides of the bottom of the screen 23. The limiting blocks 24 cooperate with the grooves 26 to form a sliding pair to ensure linear adjustment of the screen. For high-precision motion, both the processing box 21 and the second screen 23 have grooves 26 on their exteriors. The grooves 26 are designed as T-shaped grooves, which serve both guiding and limiting functions. Fasteners 27 are installed on the inner walls of the grooves 26. The fasteners 27 are quick-release bolts, which facilitate adjustment of the screen hole size between the two screens. A drive assembly 28 is fixedly connected to one side of the processing box 21. The drive assembly 28 converts the rotational motion into directional vibration of the screen through an eccentric wheel mechanism. A collection box 29 is slidably connected to one side of the processing box 21. The collection box 29 adopts a drawer-type design, which facilitates centralized cleaning of the separated impurities. Specifically, the drive component 28 drives the eccentric wheel mechanism, causing the first screen 22 to be periodically struck by the elliptical disk 283, generating high-frequency vibration and initially separating materials of different particle sizes. The second screen 23 can change the degree of interlacing of the holes with the first screen 22 by lateral adjustment, realizing stepless adjustment of the screen holes to adapt to diverse sorting needs. The limiting block 24 and the T-shaped groove 26 cooperate to ensure adjustment accuracy. The fastener 27 facilitates quick replacement of the screen. Impurities after vibration screening fall into the drawer-type collection box 29, while qualified materials enter the next process, achieving efficient pretreatment.
[0016] The drive assembly 28 includes a motor 281, which is a variable frequency motor that can adjust the vibration frequency according to the material characteristics. One side of the motor 281 is fixedly connected to one side of the processing box 21. A transmission rod 282 is fixedly connected to the drive end of the motor 281. The transmission rod 282 is dynamically balanced to ensure stability during high-speed rotation. Multiple elliptical disks 283 are fixedly connected to the outside of the transmission rod 282. The eccentricity of the elliptical disks 283 is optimized to generate the best vibration acceleration. A rotating disk 284 is fixedly connected to one side of the transmission rod 282. The rotating disk 284 converts part of the rotational kinetic energy into the reciprocating motion power of the cleaning mechanism 5. The outside of the elliptical disks 283 is in contact with one side of the screen 22. The contact surface is made of wear-resistant alloy to extend the service life. Specifically, the drive assembly 28 drives the transmission rod 282 to rotate via the motor 281, which in turn drives the elliptical disk 283 to perform eccentric motion. The elliptical disk 283 periodically strikes the bottom of the screen 22, generating high-frequency micro-amplitude vibrations, which promotes efficient material screening. The variable frequency motor can adjust the speed according to the material characteristics and optimize the vibration frequency. The wear-resistant alloy contact surface reduces wear and extends service life. At the same time, the rotating disk 284 converts some of the rotational kinetic energy into the reciprocating motion power of the cleaning mechanism 5 to achieve synchronous cleaning. This design ensures that the screening process is stable and efficient, and adapts to the pretreatment needs of different materials.
[0017] refer to Figure 4 and Figure 5 The elastic mechanism 3 includes a fixed plate 31, which serves as the mounting base for the elastic system, ensuring effective transmission of vibration energy to the screen. One side of the fixed plate 31 is fixedly connected to one side of the processing box 21. Both sides of the top of the fixed plate 31 are rotatably connected to a housing 32. The housing 32 is made of wear-resistant bearing steel to reduce friction loss and extend service life. A sliding block 33 is slidably connected to the inner wall of the housing 32. The surface of the sliding block 33 is coated with a lubricating coating to ensure smooth sliding within the housing 32. An extension column 34 is fixedly connected to the top of the sliding block 33. 4. High-strength alloy is used to withstand the impact load when the screen vibrates. The extension column 34 is fitted with a spring 35. The spring 35 is made of high carbon steel and the elastic coefficient has been optimized to ensure stable vibration frequency. The top of the extension column 34 is rotatably connected to the bottom of the screen 22. The rotatable connection design allows the screen to swing slightly during vibration to avoid rigid impact. One end of the spring 35 is fixedly connected to one side of the housing 32, and the other end of the spring 35 is fixedly connected to one side of the sliding block 33. The pre-compression of the spring 35 is adjustable to adapt to the vibration requirements of different materials. Specifically, the elastic mechanism 3 provides elastic vibration support for the screen 22 through the coordinated action of the spring 35 and the sliding block 33. When the screen is struck by the elliptical disk 283, the extension column 34 drives the sliding block 33 to slide inside the shell 32, and the spring 35 extends and retracts accordingly, buffering the impact force and enhancing the vibration effect. The optimized elastic coefficient of the high carbon steel spring 35 ensures vibration stability, while the adjustable pre-compression amount adapts to the screening requirements of different materials. The wear-resistant shell 32 and the lubricated sliding block 33 reduce friction loss and extend service life. This mechanism effectively transmits vibration energy, improves impurity separation efficiency, and avoids rigid impact damage to the screen.
[0018] refer to Figure 1 The conveying and sorting mechanism 4 includes a first conveyor belt 41, which is made of anti-static rubber to prevent fiber materials from adsorbing and remaining. The bottom of the first conveyor belt 41 is set on the top of the base 1. A second conveyor belt 42 is set on the top left end of the base 1. The second conveyor belt 42 is used to recycle unqualified materials to form a closed-loop sorting process. A support frame 43 is fixedly connected to the outside of the first conveyor belt 41. The support frame 43 is made of lightweight aluminum alloy to ensure structural strength while reducing the impact of inertia. A detector 44 is fixedly connected to the bottom of the support frame 43. The detector 44 uses multispectral imaging technology to identify fiber composition, color and impurity content. A robotic arm 45 is set on the top of the base 1. The robotic arm 45 is equipped with flexible grippers to avoid damaging fragile fiber materials. A box 46 is set on one side of the first conveyor belt 41. The box 46 has a buffer layer inside to prevent qualified materials from being damaged again during collection. Specifically, the conveying and sorting mechanism 4 uses a multispectral detector 44 to scan the material on conveyor belt 41 in real time, identifying the fiber composition, color, and impurity content. Qualified materials continue to be conveyed to the box 46 for buffer collection, while unqualified products are flexibly grasped by the robotic arm 45 and transferred to the second conveyor belt 42 for return to the feeding end. The anti-static conveyor belt prevents fiber adhesion, and the lightweight support frame 43 ensures operational stability. This mechanism combines optical detection and intelligent sorting to achieve high-precision automated sorting of fiber materials, forming a closed-loop recycling process. At the same time, the buffer design reduces material damage and improves the quality of recycled fibers.
[0019] refer to Figure 3The cleaning mechanism 5 includes a connecting rod 51, which is made of stainless steel, making it corrosion-resistant and not easily deformed. One side of the connecting rod 51 is rotatably connected to one side of the rotating disk 284, and the other side of the connecting rod 51 is rotatably connected to a connecting plate 52. The connecting plate 52 is connected by a ball joint to adapt to reciprocating motion at different angles. The inner walls of both sides of the conveyor belt 41 are fixedly connected to slide rails 53, which are linear guide rails to ensure that the cleaning plate 55 moves smoothly without jamming. A slider 54 is slidably connected to one side of the slide rail 53. The slider 54 has a built-in ball bearing to reduce frictional resistance. The cleaning plate 55 is fixedly connected to the adjacent side of the two sliders 54. The cleaning plate 55 is made of polyurethane scraper, which can effectively clean without scratching the conveyor belt. The top of the cleaning plate 55 contacts one side of the conveyor belt 41, and the contact pressure is adjustable to ensure the cleaning effect while avoiding excessive wear. Specifically, the cleaning mechanism 5 drives the connecting rod 51 via the rotating disk 284, which in turn drives the connecting plate 52 and the slider 54 to reciprocate along the slide rail 53. This allows the cleaning plate 55 to continuously scrape and clean the bottom of the conveyor belt 41. The polyurethane scraper flexibly contacts the conveyor belt, effectively removing residual fibers without damaging the surface. The ball hinge design adapts to changes in the motion angle, the ball bearing slider 54 ensures smooth operation, the stainless steel connecting rod 51 is corrosion-resistant, and the linear guide rail ensures accurate cleaning trajectory. This mechanism operates automatically, and the adjustable contact pressure balances the cleaning effect and the life of the conveyor belt, maintaining the continuous and efficient operation of the sorting system.
[0020] refer to Figure 7 The fusion mechanism 6 includes a fusion box 61, which is lined with high-temperature resistant ceramic to withstand chemical corrosion during solvent gradient treatment. The bottom of the fusion box 61 is fixedly connected to the top of the base 1. A second motor 62 is installed on the top of the fusion box 61. The second motor 62 is a servo motor that can precisely control the stirring speed. A rotating rod 63 is fixedly connected to the drive end of the second motor 62. The surface of the rotating rod 63 is plated with hard chrome to improve wear resistance and corrosion resistance. Scraper plates 64 are fixedly connected to both sides of the rotating rod 63. The scraper plates 64 are arranged in a spiral pattern to enhance the uniformity of material mixing. A rotating plate 65 is fixedly connected to the bottom of the rotating rod 63. The rotating plate 65 is designed with a fan-shaped structure to enhance the turning effect of the bottom material. Multiple convex balls 66 are fixedly connected to the top of the rotating plate 65. The distribution of the convex balls 66 is optimized by fluid dynamics to reduce the stirring dead zone. A feed plate 67 is fixedly connected to the top of the fusion box 61. The feed plate 67 is designed with an inclination to guide the material to fall evenly into the fusion box 61. Specifically, the fusion mechanism 6 drives the rotating rod 63 to rotate via motor 62, which in turn drives the spiral scraper 64 and the fan-shaped rotating plate 65 to perform three-dimensional stirring of the material. The spiral arrangement of the scraper 64 enhances radial mixing, and the fan-shaped structure of the rotating plate 65 combined with the convex ball 66 optimizes fluid motion and eliminates the stirring dead zone. The servo motor precisely controls the rotation speed to adapt to the fusion requirements of different solvents. The high-temperature resistant ceramic lining resists chemical corrosion, the hard chrome plated rotating rod 63 ensures durability, and the inclined feed plate 67 ensures uniform material distribution. Combined with gradient temperature control, it achieves full fusion of fiber and solvent, improving the homogeneity and strength of the recycled material.
[0021] refer to Figure 1 and Figure 6 The cooling and heating mechanism 7 includes a cooling box 71, which adopts a double-layer vacuum insulation structure to reduce energy loss. The bottom of the cooling box 71 is fixedly connected to the top of the base 1. A pump 72 is fixedly connected to one side of the cooling box 71. The pump 72 is magnetically driven to avoid leakage risks. A cooling pipe 73 is fixedly connected to the output end of the pump 72. The cooling pipe 73 is made of copper-aluminum composite material to improve heat exchange efficiency. The other end of the cooling pipe 73 is fixedly connected to one side of the cooling box 71, forming a closed-loop cooling cycle to improve energy utilization. A protective shell 74 is fixedly connected to the top of the base 1. The protective shell 74 is made of flame-retardant material to ensure safety in high-temperature working environments. A heater 75 is installed on the top of the cooling box 71 to heat... The heater 75 uses PID temperature control to achieve precise temperature regulation. A heating rod 76 is fixedly connected to the bottom of the heater 75. The heating rod 76 is made of stainless steel, which is resistant to high temperature and oxidation. A conveying pump 77 is fixedly connected to one side of the protective shell 74. The conveying pump 77 uses frequency conversion control to adjust the material conveying rate. A conveying pipe 78 is fixedly connected to one end of the conveying pump 77. The conveying pipe 78 is lined with PTFE coating to prevent material adhesion. An eddy current separator 79 is fixedly connected to the other end of the conveying pipe 78. The eddy current separator 79 uses the principle of electromagnetic induction to achieve efficient separation of metals and non-metals. The outside of the cooling pipe 73 is in contact with the outside of the fusion box 61 and the inner wall of the protective shell 74 to optimize the heat conduction path and improve cooling / heating efficiency. Specifically, the cooling and heating mechanism 7 achieves precise control of material phase change through a gradient temperature control system. During the heating stage, the PID temperature-controlled heater 75 drives the stainless steel heating rod 76 to uniformly heat the fusion box 61, promoting the molecular bonding of fibers and solvents. During the cooling stage, the extraction pump 72 pushes the coolant to circulate in the copper-aluminum composite cooling pipe 73, rapidly absorbing heat. The vacuum insulated cooling box 71 reduces energy loss. The variable frequency delivery pump 77 delivers the processed material to the eddy current separator 79 through the PTFE-lined delivery pipe 78, using electromagnetic induction to separate metallic impurities. The flame-retardant design of the protective shell 74 ensures safe operation at high temperatures. The closed-loop thermal management system significantly improves energy utilization and ensures that the recycled material completes the phase change process under optimal temperature conditions.
[0022] A multimodal sorting method combining solvent gradient and regenerated fiber materials is used as follows: S1. The raw material enters the processing box 21 via the second conveyor belt 42 and falls on the top of the second screen 23. The first motor 281 is started, which drives the transmission rod 282 and the elliptical disk 283 to rotate, hitting the first screen 22 to make it vibrate, so that the raw material is evenly distributed and impurities are screened out. The impurities fall into the collection box 29. The fasteners 27 are loosened, and the second screen 23 is slid to make it intersect with the holes of the first screen 22, changing the hole diameter to adapt to different impurity sizes. The extension column 34 and spring 35 assist in stabilizing the vibration and improving the screening efficiency. S2. The screened raw materials are conveyed to conveyor belt 41 by vibration. The detector 44 performs quality inspection on the raw materials. The robotic arm 45 transfers the unqualified materials to the feed plate 67, the qualified materials are sent into the box 46, and the unqualified materials enter the fusion box 61 for further processing. S3. When the transmission rod 282 rotates, it drives the rotating disk 284 and the connecting rod 51, which in turn drives the connecting plate 52 to move. The connecting plate 52 drives the cleaning plate 55 to slide along the slide rail 53 to remove residual raw materials from the surface of the conveyor belt 41 and prevent them from adhering. S4. The raw materials entering the melting box 61 are heated by the heater 75 and the heating rod 76. The motor 62 is started to drive the rotating rod 63 to rotate, which drives the scraper plate 64 and the rotating plate 65 to turn the material. The convex ball 66 further stirs the bottom material to prevent accumulation and improve the dissolution efficiency. S5. Start the extraction pump 72 to pump the coolant from the cooling tank 71 into the cooling pipe 73 to cool the material in the fusion tank. The delivery pump 77 sends the processed material through the delivery pipe 78 into the eddy current separator 79 for final sorting and recycling.
[0023] Working Principle: When the equipment is needed, the raw material is conveyed to the inside of the processing box 21 via conveyor belt 42, located at the top of screen 23. Upon entering the processing box 21, motor 281 is started, driving transmission rod 282 to rotate. This rotation of transmission rod 282 drives elliptical disc 283 to rotate, which in turn strikes the bottom of screen 22, causing it to vibrate. This vibration of screen 22 then vibrates the limiting groove 25, further agitating the raw material and making it more uniform. Impurities in the material fall into the collection box 29. Before processing the material, the fastener 27 can be unscrewed to allow the second screen 23 to slide on top of the first screen 22, so that the holes of the second screen 23 and the first screen 22 are interlaced, making the holes smaller and adjusting the holes to screen impurities of different sizes. When the first screen 22 vibrates, it will drive the extension column 34 to make the sliding block 33 slide on the inner wall of the shell 32. At this time, the movement of the sliding block 33 will compress the spring 35, causing the spring 35 to deform and generate elastic potential energy, thereby achieving efficient vibration, improving the screening effect and making the material more uniform. The continuous vibration of the screen 22 makes the material evenly transported to the top of the conveyor belt 41. At this time, the raw material is detected by the detector 44, and the unsuitable material is transferred to the feed plate 67 by the start of the robotic arm 45, so that the material enters the fusion box 61, and the suitable material enters the box 46. When the transmission rod 282 rotates, it will drive the rotating disk 284 to rotate. At this time, the rotation of the rotating disk 284 will drive the connecting rod 51 to swing. The swing of the connecting rod 51 can drive the connecting plate 52 to move. The movement of the connecting plate 52 will cause the cleaning plate 55 to move. At this time, the cleaning plate 55 controls the slider 54 to slide on one side of the slide rail 53, so that the cleaning plate 55 slides stably, and finally achieves the cleaning of the conveyor belt 41 by the cleaning plate 55, preventing raw materials from adhering to the surface of the conveyor belt 41. When a portion of the raw material enters the melting box 61, the heating rod 76 is heated by activating the heater 75. During this process, the rotating rod 63 is driven by the starting motor 62, which in turn drives the scraper plate 64 to rotate. The rotation of the scraper plate 64 agitates the material, and the rotation of the rotating rod 63 controls the rotating plate 65 to rotate the convex ball 66. The rotation of the convex ball 66 agitates the material at the bottom of the melting box 61, preventing material accumulation and effectively improving the dissolution efficiency. Finally, the extraction pump 72 is activated to draw coolant from the cooling box 71 into the cooling pipe 73, which cools the material inside the melting box 61. Afterward, the material is extracted by the conveying pump 77 and conveyed through the conveying pipe 78 into the eddy current separator 79. Finally, the material is processed by the eddy current separator 79 to achieve recycling.
[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multimodal and solvent gradient combined recycled fiber material sorting system, comprising a base (1), characterized in that: The base (1) is equipped with a pre-treatment mechanism (2) on top, and a conveying and sorting mechanism (4) is provided on top of the base (1). A cleaning mechanism (5) is provided on one side of the pre-treatment mechanism (2). A fusion mechanism (6) is installed on top of the base (1). A cooling and heating mechanism (7) is provided on one side of the fusion mechanism (6). The pretreatment mechanism (2) includes a treatment box (21), which is fixed on the top of the base (1). A screen (22) is rotatably connected to the inner wall of the treatment box (21), and a screen (23) is installed on the top of the screen (22). A drive assembly (28) is fixedly connected to one side of the treatment box (21), and a collection box (29) is slidably connected to one side of the treatment box (21). A spring mechanism (3) is provided on one side of the pretreatment mechanism (2).
2. The multimodal and solvent gradient combined recycled fiber material sorting system according to claim 1, characterized in that: The drive assembly (28) includes a motor (281), one side of which is fixedly connected to one side of the processing box (21). A transmission rod (282) is fixedly connected to the drive end of the motor (281). Multiple elliptical disks (283) are fixedly connected to the outside of the transmission rod (282). A rotating disk (284) is fixedly connected to one side of the transmission rod (282). The outside of the elliptical disks (283) is in contact with one side of the screen (22).
3. The multimodal and solvent gradient combined recycled fiber material sorting system according to claim 1, characterized in that: The inner walls of both sides of the screen (22) are provided with grooves (26), and the outer side of the limiting block (24) is slidably connected to the inner wall of the groove (26).
4. The multimodal and solvent gradient combined recycled fiber material sorting system according to claim 1, characterized in that: The elastic mechanism (3) includes a fixed plate (31), one side of which is fixedly connected to one side of the processing box (21). Both sides of the top of the fixed plate (31) are rotatably connected to a shell (32). A sliding block (33) is slidably connected to the inner wall of the shell (32). An extension column (34) is fixedly connected to the top of the sliding block (33). A spring (35) is sleeved on the outside of the extension column (34). The top of the extension column (34) is rotatably connected to the bottom of the screen (22). One end of the spring (35) is fixedly connected to one side of the shell (32), and the other end of the spring (35) is fixedly connected to one side of the sliding block (33).
5. The multimodal and solvent gradient combined recycled fiber material sorting system according to claim 1, characterized in that: Both sides of the bottom of the second screen (23) are fixedly connected with limiting blocks (24). The processing box (21) and the outside of the second screen (23) are both provided with grooves (26). Fasteners (27) are installed on the inner wall of the grooves (26).
6. The multimodal and solvent gradient combined recycled fiber material sorting system according to claim 2, characterized in that: The conveying and sorting mechanism (4) includes a first conveyor belt (41), the bottom of the first conveyor belt (41) is located on the top of the base (1), a second conveyor belt (42) is located on the top left end of the base (1), a support frame (43) is fixedly connected to the outside of the first conveyor belt (41), a detector (44) is fixedly connected to the bottom of the support frame (43), a robotic arm (45) is located on the top of the base (1), and a box (46) is located on one side of the first conveyor belt (41).
7. The multimodal and solvent gradient combined recycled fiber material sorting system according to claim 6, characterized in that: The cleaning mechanism (5) includes a connecting rod (51), one side of which is rotatably connected to one side of the rotating disk (284), and the other side of which is rotatably connected to a connecting plate (52). The inner walls of both sides of the first conveyor belt (41) are fixedly connected to slide rails (53), and one side of the slide rail (53) is slidably connected to a slider (54). The two sliders (54) are fixedly connected to a cleaning plate (55) on their adjacent sides, and the top of the cleaning plate (55) is in contact with one side of the first conveyor belt (41).
8. The multimodal and solvent gradient combined recycled fiber material sorting system according to claim 1, characterized in that: The fusion mechanism (6) includes a fusion box (61), the bottom of which is fixedly connected to the top of the base (1). A second motor (62) is installed on the top of the fusion box (61). A rotating rod (63) is fixedly connected to the drive end of the second motor (62). Scraper plates (64) are fixedly connected to both sides of the rotating rod (63). A rotating plate (65) is fixedly connected to the bottom of the rotating rod (63). A plurality of convex balls (66) are fixedly connected to the top of the rotating plate (65). A feed plate (67) is fixedly connected to the top of the fusion box (61).
9. The multimodal and solvent gradient combined recycled fiber material sorting system according to claim 8, characterized in that: The cooling and heating mechanism (7) includes a cooling box (71), the bottom of which is fixedly connected to the top of the base (1). A pump (72) is fixedly connected to one side of the cooling box (71), and a cooling pipe (73) is fixedly connected to the output end of the pump (72). The other end of the cooling pipe (73) is fixedly connected to one side of the cooling box (71). A protective shell (74) is fixedly connected to the top of the base (1). A heater (75) is installed on the top of the cooling box (71). A heating rod (76) is fixedly connected to the bottom of the heater (75). A conveying pump (77) is fixedly connected to one side of the protective shell (74). A conveying pipe (78) is fixedly connected to one end of the conveying pump (77). An eddy current separator (79) is fixedly connected to the other end of the conveying pipe (78). The outside of the cooling pipe (73) is in contact with the outside of the fusion box (61) and the inner wall of the protective shell (74).
10. A method for sorting regenerated fiber materials combining multimodal processing and solvent gradients, using the methods described in claims 1-9 above, characterized in that: S1. The raw material enters the processing box (21) through the second conveyor belt (42) and falls on the top of the second screen (23). The first motor (281) is started, which drives the transmission rod (282) and the elliptical disk (283) to rotate, hitting the first screen (22) to make it vibrate, so that the raw material is evenly distributed and impurities are screened out. The impurities fall into the collection box (29). The fasteners (27) are loosened, and the second screen (23) is slid so that it is interlaced with the holes of the first screen (22) to change the hole diameter to adapt to different impurity sizes. The extension column (34) and the spring (35) assist in stabilizing the vibration and improving the screening efficiency. S2. The screened raw materials are conveyed to conveyor belt 1 (41) by vibration. The detector (44) performs quality inspection on the raw materials. The robotic arm (45) transfers the unqualified materials to the feed plate (67), the qualified materials are sent into the box (46), and the unqualified materials enter the fusion box (61) for subsequent processing. S3. When the transmission rod (282) rotates, it drives the rotating disk (284) and the connecting rod (51) to move the connecting plate (52). The connecting plate (52) drives the cleaning plate (55) to slide along the slide rail (53) to remove residual raw materials on the surface of the conveyor belt (41) and prevent them from adhering. S4. The raw materials entering the melting box (61) are heated by the heater (75) and the heating rod (76). The second motor (62) is started to drive the rotating rod (63) to rotate, which drives the scraper plate (64) and the rotating plate (65) to turn the material. The convex ball (66) further stirs the bottom material to prevent accumulation and improve the dissolution efficiency. S5. Start the extraction pump (72) to pump the coolant from the cooling tank (71) into the cooling pipe (73) to cool the material in the fusion tank. The delivery pump (77) sends the processed material through the delivery pipe (78) into the eddy current separator (79) for final sorting and recycling.