Recycling device for carbon fiber material processing

Abstract

The invention relates to the technical field of carbon fiber recycling, in particular to a recycling device for carbon fiber material processing, which comprises a mounting table, supporting legs are fixedly mounted on the bottom surface of the mounting table, a stripping mechanism is mounted at one end of the mounting table, and a feeding mechanism is mounted on the top surface of the mounting table; the feeding mechanism comprises a material guide barrel obliquely arranged above the mounting table, a feeding funnel is fixedly mounted at the position, close to the higher end, of the periphery of the material guide barrel in a through mode, a guide conveying assembly is mounted in the material guide barrel, and a low-temperature embrittlement assembly is arranged in the material guide barrel; the stripping mechanism comprises a stripping box fixedly mounted at the end of the mounting table, a stripping assembly is arranged in the stripping box, and a driving assembly used for driving the stripping assembly is arranged on one side of the stripping box; through the design of embrittlement and stripping, the carbon fiber composite material waste is separated into high-purity long fibers and resin powder, the length and performance of the fibers can be remarkably improved, efficient recovery of the resin is achieved, and an industrial feasible scheme is provided for closed-loop circulation of a thermosetting composite material.

Description

Technical Field

[0001] The invention relates to the manufacture of special equipment for environmental protection, in particular to the technical field of carbon fiber recovery in the comprehensive utilization of solid waste, and specifically to a recovery device for processing carbon fiber materials. Background Art

[0002] Carbon fiber is a high-performance fiber material characterized by lightweight, high specific strength, and high specific modulus. Carbon fiber-reinforced composites (CFRP), which combine carbon fiber with thermosetting resins (such as epoxy) or thermoplastic resins (such as PEEK), are widely used in aerospace, automotive lightweighting, and high-end sports equipment. However, the widespread use of CFRP has led to a surge in waste. Its non-biodegradability and the environmental risks of landfill and incineration have created an urgent need for recycling.

[0003] Among traditional recycling methods, mechanical recycling is a common method that achieves CFRP recycling through physical crushing. Specifically, the waste is cut into fragments <100mm; then a hammer mill or blade crusher is used to crush the fragments into particles <10mm; then ball milling or air jet milling is used to further process the particles into powder <1mm; finally, the fiber and resin powder are separated by vibration screening or air flow sorting.

[0004] However, in traditional mechanical methods, mechanical impact causes fiber breakage, reducing average fiber length to 2-3mm (virgin continuous fiber length >50mm), and tensile strength retention to less than 50%. This also causes interfacial damage, reducing the bond between the fiber and the matrix, limiting its application in high-performance composites. Furthermore, thermosetting resins (such as epoxy) possess high toughness and impact resistance at room temperature. Mechanical comminution requires a significant amount of energy to overcome the resin's plastic deformation, resulting in high energy consumption. Summary of the Invention

[0005] The object of the present invention is to provide a recovery device for carbon fiber material processing to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A recycling device for processing carbon fiber materials, comprising a mounting platform, wherein the bottom surface of the mounting platform is fixedly mounted with supporting legs at four corner positions, a stripping mechanism is fixedly mounted at one end of the mounting platform, and an inclined feeding mechanism is fixedly mounted on the top surface of the mounting platform, the feeding mechanism is used to guide the material into the stripping mechanism; a vibrating screen is installed below the stripping mechanism between two of the supporting legs close to the stripping mechanism; The feeding mechanism includes a material guide cylinder obliquely placed above the mounting platform, a feeding funnel is fixedly installed through the outer periphery of the material guide cylinder near the higher end, a guiding component is installed in the material guide cylinder, and a low-temperature embrittlement component is provided in the material guide cylinder; The stripping mechanism comprises a stripping box fixedly mounted on the end of the mounting platform, a stripping assembly is arranged in the stripping box, and a driving assembly for driving the stripping assembly is arranged on one side of the stripping box.

[0007] Furthermore, the higher end of the material guide barrel is a closed structure, a circular hole with a rotating bearing installed is provided at its center, and a plurality of support rods are fixedly connected between the periphery of the material guide barrel and the top surface of the mounting platform.

[0008] Furthermore, the guide assembly includes a mounting plate and a hollow shaft coaxially arranged in the guide barrel, the higher end of the hollow shaft rotatably passes through the end of the guide barrel through the rotary bearing, an auger blade located in the guide barrel is fixedly mounted on the periphery of the hollow shaft, the outer edge of the auger blade is in sliding contact with the inner wall of the guide barrel, and a driven pulley located outside the guide barrel is fixedly mounted on the periphery of the hollow shaft; The mounting plate 1 is fixedly mounted on the periphery of the material guide barrel, a motor 1 is fixedly mounted on the mounting plate 1, a driving pulley 1 is fixedly mounted on the output shaft end of the motor 1, and a belt 1 is installed between the driving pulley 1 and the driven pulley 1.

[0009] Furthermore, the low-temperature embrittlement component includes a stirring rod and a rotating tube connector rotatably connected to the upper end of the hollow shaft, the rotating tube connector and the hollow shaft are connected, a connecting rod is fixedly connected between the outer periphery of the rotating tube connector and the end surface of the upper end of the material guide cylinder, the end of the rotating tube connector away from the hollow shaft is fixedly connected to a conduit, and the end of the conduit away from the rotating tube connector is connected to an external liquid nitrogen supply device; A plurality of stirring rods are fixedly installed on the periphery of the hollow shaft, and the plurality of stirring rods are distributed in an array along the spiral trajectory of the auger blade; The outer periphery of the stirring rod is provided with a plurality of evenly distributed spray holes.

[0010] Furthermore, the bottom of the stripping box is an open structure, and a feeding port fixedly connected to the lower end of the material guide cylinder is provided at the center of the top surface of the stripping box; Inclined material guide plates are fixedly mounted on the two inner walls of the stripping box, the two material guide plates are symmetrically arranged, and there is a material unloading gap between the two material guide plates; Slide grooves are provided on both width inner walls of the stripping box, a movable groove communicating with the outside of the stripping box is provided on the inner side surface of one of the slide grooves, and a mounting assembly is provided between the two slide grooves.

[0011] Furthermore, the installation assembly includes a slide, and the slide is slidably clamped in the two slide grooves. A connecting plate is fixedly connected between the ends of the two slides away from the middle position of the stripping box, and the side of the connecting plate away from the middle position of the stripping box is rotatably connected to a pressure regulating assembly.

[0012] Furthermore, the pressure regulating assembly includes a screw rod rotatably connected to the connecting plate, and one end of the screw rod away from the connecting plate is threadedly passed through the stripping box to the outside of the stripping box and a knob is fixedly installed thereon.

[0013] Furthermore, the stripping assembly includes a driven roller rotatably mounted between the two slides and a driving roller rotatably mounted between the two ends of the stripping box, and the outer peripheries of the driving roller and the driven roller are both provided with a flexible stripping layer; The driven roller is close to the movable groove and rotates to pass through the corresponding slide and then extends to the outside of the stripping box through the movable groove. The driven roller is fixedly mounted with a driven pulley on the end outside the stripping box. One end of the active roller close to the driven pulley rotates through the stripping box to the outside of the stripping box and is then fixedly mounted with a active gear.

[0014] Furthermore, the driving assembly includes a second mounting plate, a first mounting shaft, and a tensioning assembly; The second mounting plate is fixedly mounted on the outer end surface of the stripping box, and the second motor is fixedly mounted on the second mounting plate, and the output shaft end of the second motor is fixedly connected to the end of the active roller located outside the stripping box; The first mounting shaft is rotatably mounted on the outer end surface of the stripping box, and the first mounting shaft is fixedly mounted with a second driving pulley and a driven gear meshing with the driving gear; The tensioning assembly is fixedly mounted on the outer end surface of the stripping box, and the tensioning assembly includes a tensioning wheel, which is distributed in a triangle with the second driving pulley and the driven pulley, and a second belt is installed between the tensioning wheel, the second driving pulley and the driven pulley.

[0015] Furthermore, the tensioning assembly includes two convex plates fixedly mounted on the outer end surface of the stripping box, two vertically arranged sliding rods fixedly connected between the two convex plates, a sliding seat slidably connected to the two sliding rods is provided between the two convex plates, the side of the sliding seat away from the stripping box is fixedly connected to the second mounting shaft, and the tensioning wheel is rotatably mounted on the end of the second mounting shaft away from the sliding seat; Two springs are fixedly connected between the bottom surface of the sliding seat and the convex plate below and are respectively sleeved on the peripheries of the two sliding rods.

[0016] Beneficial effects of the present invention: 1. In the present invention, the resin is cooled to below its glass transition temperature by spraying liquid nitrogen, so that the resin is transformed from a tough state to a brittle state, and the fracture toughness is significantly reduced. The brittle resin is easier to break, and the energy required for crushing is greatly reduced, thereby reducing the energy consumption of mechanical recovery.

[0017] 2. In the stripping assembly of the present invention, the setting of the flexible stripping layer can utilize elastic deformation to absorb impact energy and reduce stress peaks; the shear force generated by the roller speed difference realizes the separation of resin and fiber by stripping instead of cutting. The carbon fiber recycled in this way can maintain a longer length and the mechanical properties are also close to those of the original fiber, realizing high-purity recovery of long fibers and significantly improving the recovery value of the fibers.

[0018] 3. In the tensioning assembly of the present invention, the spring is in a compressed state, and its elastic restoring force provides tensioning force to the second belt. In the process of adjusting the gap between the active roller and the driven roller, the force on the tensioning wheel changes, and the slide seat is adaptively raised and lowered on the slide rod, which can always maintain the tensioning state of the second belt and improve the stability of the transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort. Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a three-dimensional schematic diagram of the connection relationship between the feeding mechanism and the stripping mechanism in the present invention; Figure 3 yes Figure 2 A three-dimensional diagram from another angle; Figure 4 yes Figure 3 Enlarged view of part A; Figure 5 It is a schematic diagram of the structure inside the guide barrel of the present invention; Figure 6 is a three-dimensional schematic diagram of the peeling mechanism of the present invention; Figure 7 It is a three-dimensional schematic diagram of the inner wall structure of the stripping box in the present invention; Figure 8 yes Figure 6 Enlarged view of part B; Figure 9 It is a three-dimensional schematic diagram of the connection relationship between the driven roller, the active roller and the stripping box; Figure 10 yes Figure 9Enlarged view of part D in the middle; Figure 11 yes Figure 9 Enlarged view of part C; Figure 12 It is a three-dimensional schematic diagram of the connection relationship between the driving assembly and the driven roller, the driving roller and the stripping box in the present invention; Figure 13 yes Figure 12 Enlarged view of part E in the middle; Figure 14 yes Figure 12 Enlarged view of part F; The reference numerals in the figures are as follows: 1-mounting table, 2-supporting feet, 3-feeding mechanism, 4-stripping mechanism, 5-vibrating screen, 6-stripping box, 7-material guide cylinder, 8-feeding funnel, 9-support rod, 10-mounting plate 1, 11-motor 1, 12-driving pulley 1, 13-belt 1, 14-hollow shaft, 15-driven pulley 1, 16-rotating pipe connector, 17-connecting rod, 18-conduit, 19-feeding port, 20-driving roller, 21-driven roller, 22-connecting plate, 23-slide plate, 24 - slide, 25- mounting plate 2, 26- motor 2, 27- driving gear, 28- driven gear, 29- mounting shaft 1, 30- driving pulley 2, 31- belt 2, 32- driven pulley 2, 33- tensioning pulley, 34- mounting shaft 2, 35- convex plate, 36- slide rod, 37- slide seat, 38- spring, 39- movable groove, 40- screw, 41- knob, 42- stirring rod, 43- vacuum insulation chamber, 44- auger blade, 45- spray hole, 46- guide plate. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] Example 1:

[0022] See also Figures 1 to 14 In an embodiment of the present invention, a recycling device for processing carbon fiber materials includes a mounting platform 1, wherein support legs 2 are fixedly mounted at four corners of the bottom surface of the mounting platform 1, a stripping mechanism 4 is fixedly mounted at one end of the mounting platform 1, and an inclined feeding mechanism 3 is fixedly mounted on the top surface of the mounting platform 1, and the feeding mechanism 3 is used to guide the material into the stripping mechanism 4; a vibrating screen 5 is installed below the stripping mechanism 4 and between the two support legs 2 near the stripping mechanism 4; The feeding mechanism 3 includes a guide barrel 7 placed obliquely above the mounting platform 1. A feeding funnel 8 is fixedly installed through the outer periphery of the guide barrel 7 near the higher end. A guide component is installed in the guide barrel 7, and a low-temperature embrittlement component is set in the guide barrel 7. The stripping mechanism 4 includes a stripping box 6 fixedly mounted on the end of the mounting platform 1 . A stripping assembly is disposed in the stripping box 6 . A driving assembly for driving the stripping assembly is disposed on one side of the stripping box 6 .

[0023] Traditional mechanical carbon fiber recycling methods suffer from mechanical impact, causing fiber breakage, reducing average fiber length to 2-3mm (virgin continuous fiber length >50mm), and tensile strength retention to less than 50%. This also causes interfacial damage, reducing the bond between the fiber and the matrix, limiting its application in high-performance composites. Furthermore, thermosetting resins (such as epoxy) possess high toughness and impact resistance at room temperature. Mechanical comminution requires significant energy to overcome the resin's plastic deformation, resulting in high energy consumption.

[0024] When the present invention is used: First, the carbon fiber waste is crushed into a suitable size (usually 50mm) by a crusher, and then the carbon fiber waste is fed into the guide cylinder 7 through the feeding funnel 8. The guide component sends the carbon fiber waste to the stripping box 6. During the guiding process, the low-temperature embrittlement component embrittles the carbon fiber waste. In the stripping box 6, the driving component drives the stripping component to operate and strip the brittle carbon fiber waste, specifically, stripping the resin on the surface of the carbon fiber waste. After stripping, carbon fiber bundles and resin powder are formed and fall onto the vibrating screen 5. The resin powder and carbon fiber bundles are screened and separated. Collection boxes are respectively set directly below and on the lower side of the vibrating screen to collect the resin powder and carbon fiber.

[0025] Therefore, compared with traditional mechanical methods, the present invention separates carbon fiber composite material (CFRP) waste into high-purity long fibers and resin powder through embrittlement and peeling designs, which can significantly improve fiber length and performance, and also achieve efficient resin recovery, providing an industrially feasible solution for the closed-loop circulation of thermosetting composite materials.

[0026] The higher end of the guide barrel 7 is a closed structure, and a circular hole with a rotating bearing is provided at its center. A plurality of support rods 9 are fixedly connected between the periphery of the guide barrel 7 and the top surface of the mounting platform 1 .

[0027] The guide assembly includes a mounting plate 10 and a hollow shaft 14 coaxially arranged in the guide barrel 7. The higher end of the hollow shaft 14 rotatably penetrates the end of the guide barrel 7 through a rotating bearing. An auger blade 44 located in the guide barrel 7 is fixedly installed on the periphery of the hollow shaft 14. The outer edge of the auger blade 44 is in sliding contact with the inner wall of the guide barrel 7. A driven pulley 15 located outside the guide barrel 7 is fixedly installed on the periphery of the hollow shaft 14. The mounting plate 10 is fixedly mounted on the periphery of the guide barrel 7, and a motor 11 is fixedly mounted on the mounting plate 10. A driving pulley 12 is fixedly mounted on the output shaft end of the motor 11, and a belt 13 is installed between the driving pulley 12 and the driven pulley 15.

[0028] The low-temperature embrittlement assembly includes a stirring rod 42 and a rotating tube connector 16 rotatably connected to the upper end of the hollow shaft 14. The rotating tube connector 16 and the hollow shaft 14 are connected. A connecting rod 17 is fixedly connected between the outer periphery of the rotating tube connector 16 and the end surface of the upper end of the guide cylinder 7. The end of the rotating tube connector 16 away from the hollow shaft 14 is fixedly connected to a conduit 18. The end of the conduit 18 away from the rotating tube connector 16 is connected to an external liquid nitrogen supply device. A plurality of stirring rods 42 are fixedly installed on the periphery of the hollow shaft 14, and the plurality of stirring rods 42 are distributed in an array along the spiral trajectory of the auger blade 44; A plurality of evenly distributed spray holes 45 are formed on the periphery of the stirring rod 42 .

[0029] In the guide assembly, the motor 11 drives the hollow shaft 14 to rotate through the driving pulley 12, the belt 13 and the driven pulley 15, and the hollow shaft 14 drives the auger blade 44 to rotate, thereby guiding the carbon fiber waste entering from the feed funnel 8; During the process, an external nitrogen supply device supplies liquid nitrogen to the hollow shaft 14 through the conduit 18 and the rotating pipe connector 16. The liquid nitrogen in the hollow shaft 14 enters the multiple stirring rods 42 and is finally sprayed through the spray holes 45 onto the carbon fiber waste in the conveying process, thereby achieving the purpose of low-temperature embrittlement of the carbon fiber waste. At the same time, the rotation of the hollow shaft 14 drives the multiple stirring rods 42 to rotate, which can stir the carbon fiber waste during the guiding process, which is beneficial to the uniformity of low-temperature embrittlement and improves the subsequent stripping effect.

[0030] The bottom of the stripping box 6 is an open structure, and a feeding port 19 fixedly connected to the lower end of the guide cylinder 7 is provided at the center of the top surface of the stripping box 6; Inclined guide plates 46 are fixedly mounted on the two longitudinal inner walls of the stripping box 6. The two guide plates 46 are symmetrically arranged, and there is a material unloading gap between the two guide plates 46. Slide grooves 24 are provided on both width inner walls of the stripping box 6 , and a movable groove 39 communicating with the outside of the stripping box 6 is provided on the inner side surface of one slide groove 24 . A mounting assembly is provided between the two slide grooves 24 .

[0031] Among them, the installation component includes a slide 23, and a slide 23 is slidably provided in the two slide grooves 24. A connecting plate 22 is fixedly connected between the ends of the two slides 23 away from the middle position of the stripping box 6, and the side of the connecting plate 22 away from the middle position of the stripping box 6 is rotatably connected to a pressure regulating component.

[0032] The peeling assembly includes a driven roller 21 rotatably mounted between two slides 23 and an active roller 20 rotatably mounted between the two ends of the peeling box 6. The outer peripheries of the active roller 20 and the driven roller 21 are both provided with a flexible peeling layer. The end of the driven roller 21 close to the movable groove 39 rotates through the corresponding slide 23 and then extends to the outside of the stripping box 6 through the movable groove 39. The end of the driven roller 21 located outside the stripping box 6 is fixedly mounted with a driven pulley 32. One end of the driving roller 20 close to the driven pulley 32 rotates through the stripping box 6 to the outside of the stripping box 6 and then is fixedly mounted with a driving gear 27 .

[0033] The drive assembly includes a second mounting plate 25, a first mounting shaft 29, and a tensioning assembly; The second mounting plate 25 is fixedly mounted on the outer end surface of the stripping box 6, and the second motor 26 is fixedly mounted on the second mounting plate 25. The output shaft end of the second motor 26 is fixedly connected to the end of the active roller 20 located outside the stripping box 6; The mounting shaft 1 29 is rotatably mounted on the outer end surface of the stripping box 6, and the mounting shaft 1 29 is fixedly mounted with a driving pulley 2 30 and a driven gear 28 that meshes with the driving gear 27; The tensioning assembly is fixedly mounted on the outer end surface of the stripping box 6, and the tensioning assembly includes a tensioning pulley 33, which is distributed in a triangle with the driving pulley 2 30 and the driven pulley 32, and a belt 2 31 is installed between the tensioning pulley 33, the driving pulley 2 30 and the driven pulley 32.

[0034] In the drive assembly, motor 26 drives the active roller 20 to rotate, and the active roller 20 drives the installation shaft 1 29 to rotate through the engagement of the active gear 27 and the driven gear 28. The installation shaft 1 29 drives the driven roller 21 to rotate through the belt 2 31 and the driven pulley 32, thereby realizing the reverse rotation of the driven roller 21 and the active roller 20. By selecting the driven pulley 2 32 of different diameters, the speed ratio between the active roller 20 and the driven roller 21 can be achieved. Usually, the rotational differential between the active roller 20 and the driven roller 21 is about 15%, so that the carbon fiber waste between the active roller 20 and the driven roller 21 is squeezed and significantly sheared, thereby achieving the purpose of stripping the resin into powder and keeping the fibers in long bundles.

[0035] By setting the movable groove 39, the slide groove 24 and the slide plate 23, the driven roller 21 is adjustable within a certain range relative to the stripping box 6, that is, the gap between the active roller 20 and the driven roller 21 is adjustable, thereby cooperating with the pressure adjustment component to achieve flexible adjustment of the stripping pressure, thereby improving the practicality of the present invention.

[0036] Thermosetting resins (such as epoxy) possess high toughness and impact resistance at room temperature. During traditional mechanical pulverization, high-speed rotating blades directly impact the fiber-resin composite, generating high stress concentrations. This requires additional energy to overcome the tensile and shear strengths of the fibers, resulting in a high fiber breakage rate. Multiple pulverization cycles are required to separate the resin, increasing cumulative energy consumption and requiring significant energy to overcome plastic deformation. In the present invention, liquid nitrogen spraying cools the resin to below its glass transition temperature, transforming it from a tough to a brittle state. This significantly reduces fracture toughness, making the brittle resin more easily breakable and significantly reducing the energy required for pulverization, thereby reducing the energy consumption of mechanical recycling.

[0037] In the stripping component, the setting of the flexible stripping layer can utilize elastic deformation to absorb impact energy and reduce stress peaks; the shear force generated by the roller speed difference separates the resin and fiber by stripping instead of cutting. The carbon fiber recycled in this way can maintain a longer length and its mechanical properties are also close to those of the original fiber, realizing high-purity recovery of long fibers and significantly improving the recovery value of the fibers.

[0038] Example 2:

[0039] See also Figure 8 、 Figure 12 and Figure 14 On the basis of Example 1, the tensioning assembly includes two convex plates 35 fixedly mounted on the outer end surface of the stripping box 6, two vertically arranged slide bars 36 are fixedly connected between the two convex plates 35, a slide seat 37 is provided between the two convex plates 35 and is slidably connected to the two slide bars 36, a side of the slide seat 37 away from the stripping box 6 is fixedly connected to the second mounting shaft 34, and a tensioning wheel 33 is rotatably mounted on the end of the second mounting shaft 34 away from the slide seat 37; Two springs 38 are fixedly connected between the bottom surface of the slide seat 37 and the lower protruding plate 35 and are respectively sleeved on the outer periphery of the two slide rods 36.

[0040] In the tensioning assembly, the spring 38 is in a compressed state, and its elastic restoring force provides tensioning force to the belt 2 31. In the process of adjusting the gap between the active roller 20 and the driven roller 21, the force on the tensioning wheel 33 changes, and the slide 37 is adaptively raised and lowered on the slide rod 36, which can always maintain the tensioning state of the belt 2 31, thereby improving the stability of the transmission.

[0041] Example 3:

[0042] Building on Example 1, the flexible peeling layer around the active roller 20 and the driven roller 21 is made of polyurethane elastomer. Its combined advantages in elastic cushioning, wear resistance, durability, and low-temperature performance perfectly meet the stringent requirements of low-temperature embrittlement stripping in carbon fiber recycling. These properties significantly reduce fiber breakage rates, extend equipment life, and avoid the rigidity damage associated with metal rollers.

[0043] Example 4:

[0044] See also Figure 9 、 Figure 11 and Figure 12 On the basis of Example 1, the pressure regulating assembly includes a screw 40 rotatably connected to the connecting plate 22, and the end of the screw 40 away from the connecting plate 22 is threaded through the stripping box 6 to the outside of the stripping box 6 and a knob 41 is fixedly installed thereon.

[0045] By rotating the screw rod 40 through the knob 41 , the distance between the connecting plate 22 and the inner wall of the stripping box can be adjusted, thereby changing the gap between the active roller 20 and the driven roller 21 and adjusting the stripping pressure.

[0046] Example 5:

[0047] On the basis of Example 1, the pressure regulating assembly includes a control module and an electric push rod fixedly mounted on the outer side of the stripping box 6. The telescopic end of the electric push rod slides through the stripping box 6 and is fixedly connected to the connecting plate 22 after entering the stripping box 6. A pressure sensor for sensing pressure is provided between the electric push rod and the connecting plate 22. The pressure sensor is electrically connected to the control module. The electric push rod is electrically connected to the control module. When the active roller 20 and the driven roller 21 are peeling the embrittled carbon fiber waste, the pressure sensor senses the pressure between the active roller 20 and the driven roller 21 in real time. The control module can select PLC to set the pressure threshold range. When the pressure between the active roller 20 and the driven roller 21 is less than the set pressure threshold, the electric push rod extends until it reaches the threshold range; when the pressure between the active roller 20 and the driven roller 21 is greater than the set pressure threshold, the electric push rod retracts a little distance until it reaches the threshold range.

[0048] Among them, controlling the contraction and start and stop of the electric push rod through PLC and pressure sensor is a common existing technology.

[0049] This arrangement enables the pressure between the active roller 20 and the driven roller 21 to be adjusted intelligently and automatically in real time, which can effectively ensure the stability of the stripping pressure conditions and is conducive to improving the recycling quality of carbon fiber waste.

[0050] Example 6:

[0051] See also Figure 5 On the basis of Example 1, the material guide cylinder 7 is a double-wall structure, forming a vacuum insulation chamber 43.

[0052] By providing the vacuum insulation chamber 43 , the temperature loss rate can be reduced, thereby reducing resource consumption.

[0053] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A recycling device for processing carbon fiber materials, comprising a mounting platform (1), wherein the bottom surface of the mounting platform (1) is fixedly mounted with supporting legs (2) at four corner positions, characterized in that: A stripping mechanism (4) is fixedly mounted on one end of the mounting platform (1), and an inclined feeding mechanism (3) is fixedly mounted on the top surface of the mounting platform (1), the feeding mechanism (3) being used to guide materials into the stripping mechanism (4); a vibrating screen (5) is mounted below the stripping mechanism (4) between the two legs (2) close to the stripping mechanism (4); The feeding mechanism (3) comprises a material guide cylinder (7) obliquely placed above the mounting platform (1), a feeding funnel (8) is fixedly installed through the periphery of the material guide cylinder (7) near a higher end, a guide assembly is installed in the material guide cylinder (7), and a low-temperature embrittlement assembly is provided in the material guide cylinder (7); The stripping mechanism (4) comprises a stripping box (6) fixedly mounted on the end of the mounting platform (1), a stripping assembly being provided in the stripping box (6), and a driving assembly for driving the stripping assembly being provided on one side of the stripping box (6).

2. A recycling device for carbon fiber material processing according to claim 1, characterized in that: The higher end of the guide barrel (7) is a closed structure, and a circular hole for mounting a rotating bearing is provided at its center. A plurality of support rods (9) are fixedly connected between the periphery of the guide barrel (7) and the top surface of the mounting platform (1).

3. A recycling device for carbon fiber material processing according to claim 2, characterized in that: The guide assembly includes a mounting plate (10) and a hollow shaft (14) coaxially arranged in the guide barrel (7), the higher end of the hollow shaft (14) rotatably passes through the end of the guide barrel (7) through the rotating bearing, the outer periphery of the hollow shaft (14) is fixedly mounted with an auger blade (44) located in the guide barrel (7), the outer edge of the auger blade (44) is in sliding contact with the inner wall of the guide barrel (7), and the outer periphery of the hollow shaft (14) is fixedly mounted with a driven pulley (15) located outside the guide barrel (7); The mounting plate 1 (10) is fixedly mounted on the periphery of the guide barrel (7), and a motor 1 (11) is fixedly mounted on the mounting plate 1 (10). A driving pulley 1 (12) is fixedly mounted on the output shaft end of the motor 1 (11), and a belt 1 (13) is installed between the driving pulley 1 (12) and the driven pulley 1 (15).

4. A recycling device for carbon fiber material processing according to claim 3, characterized in that: The low-temperature embrittlement component comprises a stirring rod (42) and a rotating tube connector (16) rotatably connected to the upper end of the hollow shaft (14); the rotating tube connector (16) and the hollow shaft (14) are connected; a connecting rod (17) is fixedly connected between the outer periphery of the rotating tube connector (16) and the end surface of the upper end of the guide cylinder (7); a guide tube (18) is fixedly connected to the end of the rotating tube connector (16) away from the hollow shaft (14); and the end of the guide tube (18) away from the rotating tube connector (16) is connected to an external liquid nitrogen supply device; A plurality of stirring rods (42) are fixedly mounted on the periphery of the hollow shaft (14), and the plurality of stirring rods (42) are distributed in an array along the spiral trajectory of the auger blade (44); The outer periphery of the stirring rod (42) is provided with a plurality of evenly distributed spray holes (45).

5. The recycling device for carbon fiber material processing according to claim 3, characterized in that: The bottom of the stripping box (6) is an open structure, and a feeding port (19) fixedly connected to the lower end of the material guide cylinder (7) is provided at the center of the top surface of the stripping box (6); Inclined material guide plates (46) are fixedly mounted on the two longitudinal inner walls of the stripping box (6), the two material guide plates (46) are symmetrically arranged, and a material unloading gap exists between the two material guide plates (46); Slide grooves (24) are provided on both width inner walls of the stripping box (6), a movable groove (39) communicating with the outside of the stripping box (6) is provided on the inner side surface of one of the slide grooves (24), and a mounting assembly is provided between the two slide grooves (24).

6. The recycling device for carbon fiber material processing according to claim 5, characterized in that: The mounting assembly includes a slide plate (23), the slide plates (23) are slidably mounted in the two slide grooves (24), a connecting plate (22) is fixedly connected between the ends of the two slide plates (23) away from the middle position of the stripping box (6), and a pressure regulating assembly is rotatably connected to the side of the connecting plate (22) away from the middle position of the stripping box (6).

7. The recycling device for carbon fiber material processing according to claim 6, characterized in that: The pressure regulating assembly comprises a screw (40) rotatably connected to the connecting plate (22), and one end of the screw (40) away from the connecting plate (22) is threadedly passed through the stripping box (6) and fixedly mounted with a knob (41) outside the stripping box (6).

8. The recycling device for carbon fiber material processing according to claim 6, characterized in that: The stripping assembly comprises a driven roller (21) rotatably mounted between the two slides (23) and a driving roller (20) rotatably mounted between the two ends of the stripping box (6), wherein the outer peripheries of the driving roller (20) and the driven roller (21) are both provided with a flexible stripping layer; The driven roller (21) rotates at one end close to the movable groove (39) to pass through the corresponding slide plate (23) and then extends to the outside of the stripping box (6) through the movable groove (39), and a driven pulley (32) is fixedly mounted at one end of the driven roller (21) located outside the stripping box (6); One end of the active roller (20) close to the driven pulley (32) rotates through the stripping box (6) to the outside of the stripping box (6) and is then fixedly mounted with a driving gear (27).

9. The recycling device for carbon fiber material processing according to claim 8, characterized in that: The driving assembly includes a second mounting plate (25), a first mounting shaft (29) and a tensioning assembly; The second mounting plate (25) is fixedly mounted on the outer end surface of the stripping box (6), and the second motor (26) is fixedly mounted on the second mounting plate (25), and the output shaft end of the second motor (26) is fixedly connected to one end of the active roller (20) located outside the stripping box (6); The mounting shaft 1 (29) is rotatably mounted on the outer end surface of the stripping box (6), and the mounting shaft 1 (29) is fixedly mounted with a driving pulley 2 (30) and a driven gear (28) meshing with the driving gear (27); The tensioning assembly is fixedly mounted on the outer end surface of the stripping box (6), and the tensioning assembly includes a tensioning wheel (33). The tensioning wheel (33) and the second driving pulley (30) and the second driven pulley (32) are arranged in a triangle, and a second belt (31) is installed between the tensioning wheel (33), the second driving pulley (30) and the second driven pulley (32).

10. The recycling device for carbon fiber material processing according to claim 9, characterized in that: The tensioning assembly includes two convex plates (35) fixedly mounted on the outer end surface of the stripping box (6), two vertically arranged slide bars (36) are fixedly connected between the two convex plates (35), a slide seat (37) is provided between the two convex plates (35) and is slidably connected to the two slide bars (36), a side of the slide seat (37) away from the stripping box (6) is fixedly connected to the second mounting shaft (34), and the tensioning wheel (33) is rotatably mounted on one end of the second mounting shaft (34) away from the slide seat (37); Two springs (38) are fixedly connected between the bottom surface of the slide seat (37) and the convex plate (35) below, and are respectively sleeved on the periphery of the two slide rods (36).

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