A recycling device for carbon fiber material processing

Abstract

The present application 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, the bottom surface of the mounting table is fixedly provided with a supporting leg, one end of the mounting table is provided with a peeling mechanism, and the top surface of the mounting table is provided with a feeding mechanism; the feeding mechanism comprises a guide cylinder obliquely arranged above the mounting table, an inlet hopper is fixedly arranged on the periphery of the guide cylinder at the position close to the higher end, a guide assembly is arranged in the guide cylinder, and a low-temperature embrittlement assembly is arranged in the guide cylinder; the peeling mechanism comprises a peeling box fixedly arranged at the end of the mounting table, a peeling assembly is arranged in the peeling box, and a driving assembly for driving the peeling assembly is arranged on one side of the peeling box; through the design of embrittlement and peeling, the carbon fiber composite material waste is separated into high-purity long fibers and resin powder, the fiber length and performance can be significantly improved, the efficient recycling of resin is realized, and an industrialized feasible scheme for the closed-loop circulation of thermosetting composite materials is provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of manufacturing special equipment for environmental protection, in particular to the field of carbon fiber recycling technology in solid waste comprehensive utilization, and specifically relates to a recycling device for carbon fiber material processing. BACKGROUND

[0002] Carbon fiber is a high-performance fiber material with characteristics such as light weight, high specific strength, and high specific modulus. Carbon fiber reinforced composite materials (CFRP) are widely used in aerospace, automotive lightweighting, and high-end sports equipment by combining carbon fiber with thermosetting resin (such as epoxy resin) or thermoplastic resin (such as PEEK). However, the widespread use of CFRP has led to an increase in waste, and its non-biodegradability and environmental pollution risks of landfill and incineration have prompted urgent recycling needs.

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

[0004] However, in traditional mechanical methods, mechanical impact causes fiber breakage, with an average length of 2-3 mm (original fiber continuous length >50 mm), and a tensile strength retention rate of less than 50%. It also causes interface damage, reducing the bonding force of the fiber and the matrix, limiting its application in high-performance composites. And thermosetting resin (such as epoxy) has high toughness and impact resistance at room temperature, so a large amount of energy needs to be applied to overcome the plastic deformation of the resin during mechanical crushing, resulting in high energy consumption. SUMMARY

[0005] The present application aims to provide a recycling device for carbon fiber material processing to solve the problems raised in the background.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] A recycling device for carbon fiber material processing, comprising a mounting table, the bottom surface of the mounting table is fixedly installed with a supporting leg at four corner positions, one end of the mounting table is fixedly installed with a peeling mechanism, and the top surface of the mounting table is fixedly installed with an inclined feeding mechanism, the feeding mechanism is used to guide material into the peeling mechanism; two supporting legs near the peeling mechanism are installed with a vibrating screen below the peeling mechanism;

[0008] The feeding mechanism comprises a guide cylinder obliquely arranged above the mounting table, an inlet hopper is fixedly arranged on the periphery of the guide cylinder near the higher end, a guide assembly is arranged in the guide cylinder, and a low-temperature embrittlement assembly is arranged in the guide cylinder;

[0009] The stripping mechanism comprises a stripping box fixedly arranged at the end of the mounting table, 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.

[0010] Further, the higher end of the guide cylinder is a closed structure, a circular hole with a rotating bearing arranged therein is arranged at the center of the higher end, and a plurality of support rods are fixedly connected between the periphery of the guide cylinder and the top surface of the mounting table.

[0011] Further, the guide assembly comprises a mounting plate I and a hollow shaft coaxially arranged in the guide cylinder, the higher end of the hollow shaft is rotatably penetrated through the end of the guide cylinder through the rotating bearing, auger blades are fixedly arranged on the periphery of the hollow shaft in the guide cylinder, the outer edge of the auger blades is in sliding contact with the inner wall of the guide cylinder, and a driven pulley I is fixedly arranged on the periphery of the hollow shaft outside the guide cylinder.

[0012] The mounting plate I is fixedly arranged on the periphery of the guide cylinder, a motor I is fixedly arranged on the mounting plate I, a driving pulley I is fixedly arranged on the output shaft of the motor I, and a belt I is arranged between the driving pulley I and the driven pulley I.

[0013] Further, the low-temperature embrittlement assembly comprises an agitating rod and a rotating pipe connector rotatably connected to the higher end of the hollow shaft, the rotating pipe connector is penetrated through between the hollow shaft, a connecting rod is fixedly connected between the periphery of the rotating pipe connector and the end face of the higher end of the guide cylinder, a guide pipe is fixedly connected to the end of the rotating pipe connector away from the hollow shaft, and the end of the guide pipe away from the rotating pipe connector is connected to an external liquid nitrogen supply device.

[0014] The periphery of the hollow shaft is penetrated and fixedly arranged with a plurality of agitating rods, and the plurality of agitating rods are arrayed along the spiral track of the auger blades.

[0015] A plurality of uniformly distributed spray holes are arranged on the periphery of the agitating rod.

[0016] Further, the bottom of the stripping box is an open structure, and a discharge port is fixedly connected to the lower end of the guide cylinder at the center of the top surface of the stripping box.

[0017] Two inclined guide plates are fixedly arranged on the two lengthwise inner walls of the stripping box, the two guide plates are symmetrically arranged, and a discharge interval is arranged between the two guide plates.

[0018] Two width inner walls of the stripping box are provided with sliding grooves, an inner side surface of one of the sliding grooves is provided with a movable groove which is in communication with the outside of the stripping box, and a mounting assembly is arranged between the two sliding grooves.

[0019] Further, the mounting assembly comprises sliding plates, the sliding plates are slidingly clamped in the two sliding grooves, a connecting plate is fixedly connected between the ends of the two sliding plates away from the middle position of the stripping box, and a pressure adjusting assembly is rotatably connected to the side surface of the connecting plate away from the middle position of the stripping box.

[0020] Further, the pressure adjusting assembly comprises a screw rod rotatably connected to the connecting plate, and a knob is fixedly installed at the end of the screw rod away from the connecting plate and externally threaded through the stripping box.

[0021] Further, the stripping assembly comprises a driven roller rotatably installed between the two sliding plates and a driving roller rotatably installed between the two ends of the stripping box, and the driving roller and the driven roller are both provided with flexible stripping layers.

[0022] The end of the driven roller near the movable groove is rotatably threaded through the corresponding sliding plate and then extended to the outside of the stripping box through the movable groove, and a driven pulley is fixedly installed at the end of the driven roller located outside the stripping box.

[0023] The end of the driving roller near the driven pulley is rotatably threaded through the stripping box to the outside of the stripping box and then fixedly installed with a driving gear.

[0024] Further, the driving assembly comprises a second mounting plate, a first mounting shaft, and a tensioning assembly.

[0025] The second mounting plate is fixedly installed on the outer end surface of the stripping box, and a second motor is fixedly installed on the second mounting plate, and the output shaft of the second motor is fixedly connected to the end of the driving roller located outside the stripping box.

[0026] The first mounting shaft is rotatably installed on the outer end surface of the stripping box, and a second driving pulley and a driven gear meshing with the driving gear are fixedly installed on the first mounting shaft.

[0027] The tensioning assembly is fixedly installed on the outer end surface of the stripping box, and the tensioning assembly comprises a tensioning wheel, the tensioning wheel, the second driving pulley, and the driven pulley are arranged in a triangular shape, and a second belt is installed between the tensioning wheel, the second driving pulley, and the driven pulley.

[0028] Further, the tensioning assembly comprises two convex plates fixedly installed on the outer end surface of the stripping box, two vertically arranged slide rods are fixedly connected between the two convex plates, a slide seat in sliding connection with the two slide rods is arranged between the two convex plates, the slide seat is fixedly connected with a mounting shaft two away from the side surface of the stripping box, and the mounting shaft two is rotatably installed with the tensioning wheel away from the slide seat.

[0029] The bottom surface of the slide seat is fixedly connected with two springs respectively sleeved on the outer periphery of the two slide rods.

[0030] The beneficial effects of the present application are:

[0031] 1. In the present application, the resin is cooled below its glass transition temperature by liquid nitrogen spraying, so that the resin changes from a ductile state to a brittle state, 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 recycling.

[0032] 2. In the stripping assembly of the present application, the flexible stripping layer is arranged to absorb impact energy through elastic deformation and reduce stress peaks; the shear force generated by the speed difference of the rollers is used to separate the resin and the fiber in the form of peeling instead of cutting, the carbon fiber recovered in this way can maintain a relatively long length, and the mechanical properties are also close to the original fiber, realizing high-purity recovery of long fibers and significantly improving the recycling value of the fibers.

[0033] 3. In the tensioning assembly of the present application, the spring is in a compressed state, and its elastic restoring force provides tension to the second belt, and during the gap adjustment between the driving roller and the driven roller, the stress of the tensioning wheel changes, and the slide seat adaptively rises and falls on the slide rod, so that the tensioning state of the second belt can be maintained at all times, and the stability of the transmission is improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, and obviously, other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings;

[0035] Figure 1 is a structural schematic diagram of the present application as a whole;

[0036] Figure 2 is a three-dimensional schematic diagram of the connection relationship between the feeding mechanism and the stripping mechanism in the present application;

[0037] Figure 3 is Figure 2 is a three-dimensional schematic diagram from another angle;

[0038] Figure 4 is Figure 3 is an enlarged view of part A in the figure;

[0039] Figure 5 is a schematic view of the structure inside the material guiding cylinder in the present application;

[0040] Figure 6 is a three-dimensional schematic view of the peeling mechanism in the present application;

[0041] Figure 7 is a three-dimensional schematic view of the inner wall structure of the peeling box in the present application;

[0042] Figure 8 is Figure 6 is an enlarged view of part B in the figure;

[0043] Figure 9 is a three-dimensional schematic view of the connection relationship between the driven roller, the driving roller and the peeling box;

[0044] Figure 10 is Figure 9 is an enlarged view of part D in the figure;

[0045] Figure 11 is Figure 9 is an enlarged view of part C in the figure;

[0046] Figure 12 is a three-dimensional schematic view of the connection relationship between the driving assembly, the driven roller, the driving roller and the peeling box in the present application;

[0047] Figure 13 is Figure 12 is an enlarged view of part E in the figure;

[0048] Figure 14 is Figure 12 is an enlarged view of part F in the figure;

[0049] The reference signs in the figure are as follows:

[0050] 1-mounting table, 2-leg, 3-feeding mechanism, 4-stripping mechanism, 5-vibrating screen, 6-stripping box, 7-feeding cylinder, 8-feeding hopper, 9-supporting rod, 10-mounting plate I, 11-motor I, 12-driving pulley I, 13-belt I, 14-hollow shaft, 15-driven pulley I, 16-rotating tube connecting piece, 17-connecting rod, 18-conduit, 19-discharging port, 20-driving roller, 21-driven roller, 22-connecting plate, 23-sliding plate, 24-slotted guide, 25-mounting plate II, 26-motor II, 27-driving gear, 28-driven gear, 29-mounting shaft I, 30-driving pulley II, 31-belt II, 32-driven pulley II, 33-tension pulley, 34-mounting shaft II, 35-protruding plate, 36-sliding rod, 37-sliding seat, 38-spring, 39-movable slot, 40-screw, 41-knob, 42-agitating rod, 43-vacuum insulation cavity, 44-auger blade, 45-injection hole, 46-feeding plate. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0052] Embodiment 1

[0053] Please refer to Figures 1-14 In the embodiments of the present application, a recycling device for carbon fiber material processing includes a mounting table 1, legs 2 are fixedly installed on the bottom surface of the mounting table 1 at four corner positions, a stripping mechanism 4 is fixedly installed at one end of the mounting table 1, an inclined feeding mechanism 3 is fixedly installed on the top surface of the mounting table 1, and the feeding mechanism 3 is used for guiding material to the stripping mechanism 4; a vibrating screen 5 is installed between the two legs 2 close to the stripping mechanism 4 and located below the stripping mechanism 4.

[0054] The feeding mechanism 3 includes an inclined feeding cylinder 7 located above the mounting table 1, a feeding hopper 8 is fixedly installed on the periphery of the feeding cylinder 7 at a position close to the higher end in a through manner, a guiding assembly is installed in the feeding cylinder 7, and a low-temperature embrittlement assembly is arranged in the feeding cylinder 7.

[0055] The stripping mechanism 4 includes a stripping box 6 fixedly installed at the end of the mounting table 1, a stripping assembly is arranged in the stripping box 6, and a driving assembly for driving the stripping assembly is arranged on one side of the stripping box 6.

[0056] In the traditional mechanical method of recycling carbon fibers, mechanical impact causes fiber breakage, the average length is reduced to 2-3mm (the continuous length of virgin fibers is greater than 50mm), and the tensile strength retention rate is less than 50%; and it can cause interface damage, reduce the bonding force of the fiber and the matrix, and limit its application in high-performance composites. And the thermosetting resin (such as epoxy) has high toughness and impact resistance at room temperature, and a large amount of energy needs to be applied to overcome the plastic deformation of the resin during mechanical crushing, resulting in high energy consumption.

[0057] However, when the present application is used:

[0058] First, the carbon fiber waste is crushed to a suitable size (usually 50mm) by a crusher, then the carbon fiber waste is sent into the guide cylinder 7 through the feed hopper 8, the guide assembly sends the carbon fiber waste to the stripping box 6, and the low-temperature embrittlement assembly embrittles the carbon fiber waste during the guide process;

[0059] In the stripping box 6, the driving assembly drives the stripping assembly to operate, and the carbon fiber waste after embrittlement is stripped, specifically the resin on the surface of the carbon fiber waste is stripped, and after stripping, carbon fiber bundles and resin powder are formed and fall into the vibrating screen 5, and the resin powder and the carbon fiber bundles are screened and separated, and the vibrating screen is provided below and on the lower side. Collecting box to collect resin powder and carbon fiber.

[0060] Therefore, compared with the traditional mechanical method, the present application separates the carbon fiber composite (CFRP) waste into high-purity long fibers and resin powder through the design of embrittlement and stripping, which can significantly improve the fiber length and performance, and also realizes the efficient recovery of resin, providing an industrialized and feasible solution for the closed-loop cycle of thermosetting composites.

[0061] Wherein, the higher end of the guide cylinder 7 is a closed structure, a circular hole with a rotating bearing installed in the center is provided, and a plurality of support rods 9 are fixedly connected between the outer periphery of the guide cylinder 7 and the top surface of the mounting table 1.

[0062] Wherein, the guide assembly includes a mounting plate one 10 and a hollow shaft 14 coaxially arranged in the guide cylinder 7, the higher end of the hollow shaft 14 penetrates the end of the guide cylinder 7 through the rotating bearing, the outer periphery of the hollow shaft 14 is fixedly installed with an auger blade 44 located in the guide cylinder 7, the outer edge of the auger blade 44 is in sliding contact with the inner wall of the guide cylinder 7, and the outer periphery of the hollow shaft 14 is fixedly installed with a driven pulley one 15 located outside the guide cylinder 7.

[0063] The mounting plate one 10 is fixedly installed on the outer periphery of the guide cylinder 7, and the motor one 11 is fixedly installed on the mounting plate one 10, the output shaft end of the motor one 11 is fixedly installed with the driving pulley one 12, and the driving pulley one 12 and the driven pulley one 15 are installed with the belt one 13.

[0064] The low-temperature embrittlement assembly comprises the stirring rod 42 and the rotating pipe connector 16 rotatably connected to the higher end of the hollow shaft 14, the rotating pipe connector 16 is penetrated between the hollow shaft 14, and the periphery of the rotating pipe connector 16 is fixedly connected with the connecting rod 17 between the end face of the higher end of the guide cylinder 7.

[0065] The periphery of the hollow shaft 14 is fixedly installed with the plurality of stirring rods 42 in a penetrating manner, and the plurality of stirring rods 42 are arrayed along the helical track of the auger blade 44.

[0066] The periphery of the stirring rod 42 is provided with the plurality of uniformly distributed spray holes 45.

[0067] In the guiding 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, so that the carbon fiber waste entering the feeding hopper 8 can be guided and conveyed.

[0068] In the process, the external nitrogen supply device supplies liquid nitrogen into the hollow shaft 14 through the guide pipe 18 and the rotating pipe connector 16, the liquid nitrogen in the hollow shaft 14 enters the plurality of stirring rods 42, and finally is sprayed to the carbon fiber waste in the guiding process through the spray holes 45, so as to achieve the purpose of low-temperature embrittlement of the carbon fiber waste.

[0069] Meanwhile, the rotation of the hollow shaft 14 drives the plurality of stirring rods 42 to rotate, so that the carbon fiber waste can be stirred in the process of guiding and conveying, which is beneficial to the uniformity of low-temperature embrittlement and improves the subsequent stripping effect.

[0070] The bottom of the stripping box 6 is of an open structure, and the top surface of the stripping box 6 is provided with the discharge port 19 fixedly connected with the lower end of the guide cylinder 7 at the central position.

[0071] The two length inner walls of the stripping box 6 are fixedly installed with the inclined guide plates 46, the two guide plates 46 are symmetrically arranged, and there is a discharging interval between the two guide plates 46.

[0072] The two width inner walls of the stripping box 6 are provided with the sliding grooves 24, the inner side surface of one sliding groove 24 is provided with the movable slot 39 penetrating the outside of the stripping box 6, and the two sliding grooves 24 are provided with the mounting assembly.

[0073] The mounting assembly comprises the sliding plates 23, the two sliding grooves 24 are slidably clamped with the sliding plates 23, the two sliding plates 23 are fixedly connected with the connecting plate 22 between the ends away from the middle position of the stripping box 6, and the side surface of the connecting plate 22 away from the middle position of the stripping box 6 is rotatably connected with the pressure adjusting assembly.

[0074] The peeling assembly comprises a driven roller 21 rotatably installed between the two sliding plates 23 and a driving roller 20 rotatably installed between the two ends of the peeling box 6, and the periphery of the driving roller 20 and the periphery of the driven roller 21 are provided with flexible peeling layers;

[0075] The driven roller 21 is rotatably installed through the corresponding sliding plate 23 near one end of the movable groove 39, extends to the outside of the peeling box 6 through the movable groove 39, and the end of the driven roller 21 located outside the peeling box 6 is fixedly installed with a driven pulley 32.

[0076] The driving roller 20 is rotatably installed through the peeling box 6 near one end of the driven pulley 32, and is fixedly installed with a driving gear 27 after extending to the outside of the peeling box 6.

[0077] The driving assembly comprises a second mounting plate 25, a first mounting shaft 29 and a tensioning assembly.

[0078] The second mounting plate 25 is fixedly installed on the outer end face of the peeling box 6, and the second mounting plate 25 is fixedly installed with a motor 26, and the output shaft end of the motor 26 is fixedly connected with one end of the driving roller 20 located outside the peeling box 6.

[0079] The first mounting shaft 29 is rotatably installed on the outer end face of the peeling box 6, and the first mounting shaft 29 is fixedly installed with a second driving pulley 30 and a driven gear 28 engaged with the driving gear 27.

[0080] The tensioning assembly is fixedly installed on the outer end face of the peeling box 6, and the tensioning assembly comprises a tensioning wheel 33, the tensioning wheel 33 is triangularly distributed with the second driving pulley 30 and the driven pulley 32, and the tensioning wheel 33, the second driving pulley 30 and the driven pulley 32 are installed with a second belt 31.

[0081] In the driving assembly, the motor 26 drives the driving roller 20 to rotate, the driving roller 20 drives the first mounting shaft 29 to rotate through the engagement of the driving gear 27 and the driven gear 28, the first mounting shaft 29 drives the driven roller 21 to rotate through the second belt 31 and the driven pulley 32, so as to realize the reverse rotation of the driven roller 21 and the driving roller 20, and the speed ratio between the driving roller 20 and the driven roller 21 can be realized by selecting different diameters of the driven pulley 32, and the rotation differential between the driving roller 20 and the driven roller 21 is usually about 15%, so that the carbon fiber waste between the driving roller 20 and the driven roller 21 is subjected to extrusion and significant shearing action, so as to realize the purpose of peeling the resin into powder and keeping the fiber long.

[0082] Through the setting of the movable groove 39, the sliding groove 24 and the sliding plate 23, the driven roller 21 is adjustable within a certain range relative to the peeling box 6, that is, the gap between the driving roller 20 and the driven roller 21 is adjustable, so as to realize flexible adjustment of the peeling pressure in cooperation with the pressure adjusting assembly, and improve the practicability of the present application.

[0083] The thermosetting resin (such as epoxy) has high toughness and impact resistance at room temperature, and in traditional mechanical crushing, the high-speed rotating blade directly impacts the fiber-resin composite, resulting in high stress concentration, and additional energy is required to overcome the tensile and shear strength of the fiber, and the fiber breakage rate is high, and multiple crushing cycles are required to separate the resin, which increases the cumulative energy consumption, and a large amount of energy is required to overcome the plastic deformation of the resin. In the present application, the resin is cooled below its glass transition temperature by spraying liquid nitrogen, which changes the resin from a tough state to a brittle state, significantly reducing the fracture toughness, and the brittle resin is easier to break, greatly reducing the energy required for crushing, thereby reducing the energy consumption of mechanical recycling.

[0084] In the peeling assembly, the flexible peeling layer is provided to absorb impact energy by elastic deformation and reduce stress peaks; the shear force generated by the speed difference of the rollers realizes the separation of the resin and the fiber in the form of peeling instead of cutting, and the carbon fiber recovered in this way can maintain a relatively long length and has mechanical properties close to the original fiber, realizing high-purity recovery of long fibers and significantly improving the recycling value of the fibers.

[0085] Example 2:

[0086] Please refer to Figure 8 , Figure 12 and Figure 14 , on the basis of example 1, the tensioning assembly includes two convex plates 35 fixedly installed on the outer end face of the peeling box 6, two vertically arranged slide rods 36 are fixedly connected between the two convex plates 35, a sliding seat 37 is arranged between the two convex plates 35 and is in through sliding connection with the two slide rods 36, the sliding seat 37 is fixedly connected with a second mounting shaft 34 away from the peeling box 6, and the second mounting shaft 34 is rotatably installed with a tensioning wheel 33 away from the sliding seat 37.

[0087] The bottom surface of the sliding seat 37 and the lower convex plate 35 are fixedly connected with two springs 38 respectively sleeved around the outer periphery of the two slide rods 36.

[0088] In the tensioning assembly, the spring 38 is in a compressed state, and the elastic restoring force of the spring 38 provides tension to the belt 31, and during the gap adjustment process between the driving roller 20 and the driven roller 21, the force on the tensioning wheel 33 changes, and the sliding seat 37 is adaptively raised and lowered on the slide rod 36, which can always maintain the tensioning state of the belt 31, improving the stability of the transmission.

[0089] Example 3:

[0090] On the basis of embodiment 1, the flexible stripping layer outside the driving roller 20 and the driven roller 21 is a polyurethane elastomer, which has comprehensive advantages in elastic buffering, wear resistance and durability, low temperature performance, and perfectly meets the harsh requirements of low temperature embrittlement and stripping in carbon fiber recycling. Its characteristics significantly reduce the fiber breakage rate, prolong the service life of the equipment, and avoid the problem of rigid damage of metal rollers.

[0091] Embodiment 4:

[0092] Please refer to Figure 9 , Figure 11 and Figure 12 , on the basis of embodiment 1, the pressure adjusting assembly includes a screw rod 40 rotationally connected with the connecting plate 22, and a knob 41 fixedly installed outside the stripping box 6 at the end of the screw rod 40 away from the connecting plate 22.

[0093] 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, so as to change the gap between the driving roller 20 and the driven roller 21, and realize the adjustment of the stripping pressure.

[0094] Embodiment 5:

[0095] On the basis of embodiment 1, the pressure adjusting assembly includes a control module and an electric push rod fixedly installed outside the stripping box 6, the telescopic end of the electric push rod is slidingly penetrated into the stripping box 6 and fixedly connected between the connecting plate 22, and a pressure sensor for sensing pressure is arranged between the electric push rod and the connecting plate 22, and the pressure sensor is electrically connected with the control module;

[0096] The electric push rod and the control module are electrically connected, and the pressure sensor can real-time sense the pressure between the driving roller 20 and the driven roller 21 during the stripping process of the embrittled carbon fiber waste by the driving roller 20 and the driven roller 21.

[0097] The control module can be PLC, and a pressure threshold range is set, when the pressure between the driving roller 20 and the driven roller 21 is less than the set pressure threshold, the electric push rod is extended until the threshold range is reached; when the pressure between the driving roller 20 and the driven roller 21 is greater than the set pressure threshold, the electric push rod is retracted by a distance until the threshold range is reached.

[0098] Among them, the contraction and start-stop of the electric push rod controlled by the PLC and the pressure sensor are common prior art.

[0099] Through the setting, the pressure between the driving roller 20 and the driven roller 21 can be automatically adjusted in real time, which can effectively ensure the stability of the stripping pressure condition and is beneficial to improve the recycling quality of the carbon fiber waste.

[0100] Embodiment 6:

[0101] Referring to Figure 5 On the basis of Embodiment 1, the material guiding cylinder 7 is of double-wall structure, forming a vacuum heat-insulating cavity 43.

[0102] Through the setting of the vacuum heat-insulating cavity 43, the temperature loss rate can be reduced, thereby reducing resource consumption.

[0103] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

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 equipped with legs (2) at four corner positions, characterized in that, A peeling mechanism (4) is fixedly installed at one end of the mounting platform (1), and an inclined feeding mechanism (3) is fixedly installed on the top surface of the mounting platform (1). The feeding mechanism (3) is used to guide material into the peeling mechanism (4); a vibrating screen (5) located below the peeling mechanism (4) is installed between the two legs (2) near the peeling mechanism (4). The feeding mechanism (3) includes a guide cylinder (7) that is inclined above the mounting platform (1). A feeding funnel (8) is fixedly installed in a through manner on the periphery of the guide cylinder (7) near the higher end. A conveying component is installed in the guide cylinder (7), and a low-temperature embrittlement component is provided in the guide cylinder (7). The peeling mechanism (4) includes a peeling box (6) fixedly installed at the end of the mounting platform (1), a peeling assembly is provided in the peeling box (6), and a driving assembly for driving the peeling assembly is provided on one side of the peeling box (6). The conveying assembly includes a mounting plate (10) and a hollow shaft (14) coaxially disposed in the guide cylinder (7). The higher end of the hollow shaft (14) is rotatably inserted through the end of the guide cylinder (7) via a rotating bearing. An auger blade (44) located in the guide cylinder (7) is fixedly installed on the periphery of the hollow shaft (14). The outer edge of the auger blade (44) slides in contact with the inner wall of the guide cylinder (7). A driven pulley (15) located outside the guide cylinder (7) is fixedly installed on the periphery of the hollow shaft (14). The mounting plate (10) is fixedly installed on the periphery of the guide cylinder (7). A motor (11) is fixedly installed on the mounting plate (10). A drive pulley (12) is fixedly installed on the output shaft end of the motor (11). A belt (13) is installed between the drive pulley (12) and the driven pulley (15). The low-temperature embrittlement component includes a stirring rod (42) and a rotating tube connector (16) rotatably connected to the higher end of the hollow shaft (14). The rotating tube connector (16) is connected to the hollow shaft (14). A connecting rod (17) is fixedly connected between the periphery of the rotating tube connector (16) and the end face of the higher end of the guide cylinder (7). A conduit (18) is fixedly connected to the end of the rotating tube connector (16) away from the hollow shaft (14). The end of the conduit (18) away from the rotating tube connector (16) is connected to an external liquid nitrogen supply device. Multiple agitator rods (42) are fixedly installed in a through-type manner on the periphery of the hollow shaft (14), and the multiple agitator rods (42) are distributed in an array along the spiral trajectory of the auger blade (44); The agitator (42) has a plurality of evenly distributed nozzles (45) on its periphery. The peeling assembly includes a driven roller (21) and an active roller (20) rotatably disposed in the peeling box. Both the active roller (20) and the driven roller (21) are provided with a flexible peeling layer on their periphery. The driven roller (21) is fixedly mounted with a driven pulley (32) at one end outside the stripping box (6); The active roller (20) rotates through the stripping box (6) to the outside of the stripping box (6) and is then fixedly mounted with an active gear (27). 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 installed on the outer end face of the stripping box (6). The second motor (26) is fixedly installed 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 (29) is rotatably mounted on the outer end face of the stripping box (6). The mounting shaft (29) is fixedly mounted with the drive pulley (30) and the driven gear (28) meshing with the drive gear (27). The tensioning assembly is fixedly installed on the outer end face of the stripping box (6). The tensioning assembly includes a tensioning wheel (33). The tensioning wheel (33), the second driving pulley (30), and the driven pulley (32) are arranged in a triangle. A belt (31) is installed between the tensioning wheel (33), the second driving pulley (30), and the driven pulley (32).

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

3. The recycling device for carbon fiber material processing according to claim 1, characterized in that, The bottom of the stripping box (6) is an open structure, and a discharge port (19) is provided at the center of the top surface of the stripping box (6) and is fixedly connected to the lower end of the guide cylinder (7). Inclined guide plates (46) are fixedly installed on the two inner walls of the stripping box (6). The two guide plates (46) are symmetrically arranged and there is a feeding interval between the two guide plates (46). The stripping box (6) has two inner walls with grooves (24) on each side. One of the grooves (24) has an inner side with a movable groove (39) that communicates with the outside of the stripping box (6). An installation assembly is provided between the two grooves (24).

4. A recycling device for carbon fiber material processing according to claim 3, characterized in that, The installation assembly includes a sliding plate (23), and the sliding plate (23) is slidably mounted in both of the two sliding grooves (24). A connecting plate (22) is fixedly connected between the ends of the two sliding plates (23) away from the middle position of the peeling box (6). A pressure regulating assembly is rotatably connected to the side of the connecting plate (22) away from the middle position of the peeling box (6).

5. A recycling device for carbon fiber material processing according to claim 4, characterized in that, The pressure regulating assembly includes a screw (40) rotatably connected to the connecting plate (22), and a knob (41) is fixedly installed at the end of the screw (40) away from the connecting plate (22) after it is threaded through the stripping box (6) to the outside of the stripping box (6).

6. A recycling device for carbon fiber material processing according to claim 4, characterized in that, The driven roller (21) is rotatably mounted between the two slide plates (23); The driven roller (21) rotates through the corresponding slide plate (23) near the end of the movable groove (39) and extends to the outside of the stripping box (6) through the movable groove (39). The driven pulley (32) is fixedly installed at the end of the driven roller (21) located outside the stripping box (6).

7. A recycling device for carbon fiber material processing according to claim 1, characterized in that, The tensioning assembly includes two protruding plates (35) fixedly installed on the outer end face of the stripping box (6). Two vertically arranged sliding rods (36) are fixedly connected between the two protruding plates (35). A sliding seat (37) is provided between the two protruding plates (35) and is slidably connected through the two sliding rods (36). A second mounting shaft (34) is fixedly connected to the side of the sliding seat (37) away from the stripping box (6). The tensioning wheel (33) is rotatably installed at the end of the second mounting shaft (34) away from the sliding seat (37). The bottom surface of the slide block (37) is fixedly connected to the lower convex plate (35) by two springs (38) respectively sleeved on the periphery of the two slide rods (36).

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