Separation equipment for carbon fiber waste recovery

Abstract

The utility model relates to carbon fiber waste recovery technical field, concretely relates to a kind of separating equipment for carbon fiber waste recovery, including base, further include reaction kettle, supercharging mechanism heating mechanism and crushing structure, reaction kettle includes inner tank and outer tank, supercharging mechanism includes electric back pressure valve and conveying assembly, heating mechanism includes several electric heating rods and several support components, chopping mechanism includes processing box, drive assembly and several diamond abrasive saws, and several diamond abrasive saws are interlaced, the utility model relates to carbon fiber waste recovery technical field, concretely relates to a kind of separating equipment for carbon fiber waste recovery, can keep inner tank inside high temperature and high pressure, to polymer matrix chemical decomposition into small molecule monomer or oligomer, to be dissolved or stripped from carbon fiber, to remove polymer matrix on carbon fiber waste, obtain pure, can be reused carbon fiber, further improve the separation efficiency of polymer matrix and carbon fiber.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber waste recycling technology, specifically to a separation device for carbon fiber waste recycling. Background Technology

[0002] The core task of separation equipment used for carbon fiber waste recycling is to "liberate" carbon fiber materials from their composites. Specifically, this mainly involves separating the polymer matrix from the carbon fibers to obtain pure, reusable carbon fibers.

[0003] The existing technology has the following shortcomings: 1. Carbon fiber materials have a specific strength and specific modulus that far exceed those of most metals, making them difficult to cut with ordinary metal saw blades, which is not conducive to subsequent recycling.

[0004] 2. The lack of a reactor designed to maintain high temperature and high pressure resulted in the inability to effectively and completely separate the polymer matrix from the carbon fiber waste, thus reducing the separation efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a separation device for recycling carbon fiber waste.

[0006] To achieve this objective, the present invention adopts the following technical solution: A separation device for recycling carbon fiber waste is provided, including a base; It also includes a reaction vessel, a pressurization mechanism, a heating mechanism, and a crushing structure; The reactor is located on top of the base. The reactor includes an inner tank and an outer tank. The outer tank is vertically set by four supporting legs. The inner tank is fixed inside the outer tank and has a hollow cylindrical structure. The pressurization mechanism is located between the base and the reactor. The pressurization mechanism includes an electric back pressure valve and a conveying assembly. The conveying assembly is located on the top of the base, and the electric back pressure valve is fixedly mounted on the conveying assembly. The heating mechanism is located inside the reactor. The heating mechanism includes several electric heating rods and several support components. There is a sandwich between the inner tank and the outer tank. Several support components are equally spaced inside the sandwich. Each electric heating rod is mounted on a support component. The shredding mechanism is mounted on the top of the base via a top plate. The shredding mechanism includes a processing box, a drive assembly, and several diamond wheel saws. The processing box is fixed to the top of the top plate via four legs. The drive assembly is inserted into the outer wall of the processing box. The several diamond wheel saws are all mounted on the drive assembly and are staggered with each other.

[0007] Preferably, the drive assembly includes a motor, two gears, and two rotating shafts. Each rotating shaft is rotatably mounted on the processing box, and each gear is fixedly mounted on one rotating shaft. The motor is fixedly mounted on the outer wall of the processing box via an L-shaped plate, and its output end is fixedly connected to one end of the rotating shaft. The two gears are meshed together, and several diamond abrasive wheel saws are fixedly connected to the outer walls of the two rotating shafts respectively.

[0008] Preferably, the delivery assembly includes a steel cylinder and a high-pressure conduit. The steel cylinder is located on the top of the base, and the high-pressure conduit is fixedly located on the outlet end of the steel cylinder. The end of the high-pressure conduit away from the steel cylinder passes through the outer tank and communicates with the inner tank. An electric back pressure valve is fixedly connected to the high-pressure conduit.

[0009] Preferably, each support component includes two mounting blocks, both of which are fixedly mounted on the inner wall of the outer tank, and each electric heating rod is inserted into the two mounting blocks.

[0010] Preferably, two guide plates are fixedly provided on the top inner side of the processing box, a discharge port is provided on the bottom inner side of the processing box, a feeding slide is fixedly provided at the bottom of the discharge port, a feed port is provided on the top of the outer tank, a baffle is slidably provided on the top of the feed port, a support plate is fixedly provided on the top of the outer tank, and a first electric push rod is inserted into the support plate, the output end of which is fixedly connected to the baffle.

[0011] Preferably, a pressure sensor is inserted into the top of the outer tank, an inlet pipe is fixedly installed at the top of the outer tank, an outlet pipe is fixedly installed at the bottom of the outer tank, a solenoid valve is fixedly installed on the outer wall of both the inlet and outlet pipes, and a filter plate is fixedly installed inside the inner tank.

[0012] Preferably, the outer wall of the inner tank in the circumferential direction is provided with a material inlet, and a pull plate is slidably provided inside the material inlet.

[0013] Preferably, a material picking window is provided on the outer wall of the outer tank in the circumferential direction, and two slide rails are fixedly provided on both sides of the material picking window. A slider is slidably provided on the outer wall of each slide rail, and a sealing plate is fixedly provided between the two sliders. A second electric push rod is fixedly provided on the outer wall of the outer tank, and its output end is fixedly connected to the sealing plate.

[0014] The beneficial effects of this utility model are: 1. This utility model designs a shredding mechanism, namely a processing box, a drive assembly, and several diamond grinding wheel saws. Diamond is currently the hardest known material, and the grinding wheel saws made of diamond can effectively grind carbon fiber. At the same time, the interlaced design of several diamond grinding wheel saws can cut large carbon fiber waste into small pieces, which can be fed into the reactor through the feeding chute, thus improving the shredding efficiency and facilitating subsequent recycling.

[0015] 2. This utility model, through the design of an inlet pipe, a pressurizing mechanism, and a heating mechanism, delivers ionic liquid into the inner tank through the inlet pipe, uniformly heats the ionic liquid inside the inner tank through the heating mechanism, and delivers high-pressure gas into the inner tank through the pressurizing mechanism. This maintains a high temperature and high pressure inside the inner tank, thereby chemically decomposing the polymer matrix into small molecule monomers or oligomers, thus dissolving or peeling them off from the carbon fiber. This removes the polymer matrix from the carbon fiber waste, obtaining pure, reusable carbon fiber, and further improving the separation efficiency between the polymer matrix and the carbon fiber.

[0016] 3. This utility model, through the design of the filter plate and the liquid outlet pipe, allows the used ionic liquid to be discharged from the liquid outlet pipe. After the separation operation, the liquid can generate recoverable monomers or chemicals with high recycling value. The surface of the remaining carbon fiber is very clean with minimal fiber damage, further improving the separation effect.

[0017] 4. By designing a material inlet and a material window, this utility model allows the remaining pure carbon fiber to remain on the top of the filter plate after the used ionic liquid is discharged. The pure carbon fiber can be removed through the material inlet and the material window, making the recycling work convenient and quick, thereby improving the practicality of this equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the image; Figure 3 This is a schematic diagram of the planar structure of the present invention; Figure 4 This is a cross-sectional structural diagram of the processing box of this utility model; Figure 5 for Figure 4 Enlarged view of point B in the image; Figure 6 This is a schematic diagram of the cross-sectional structure of the reaction vessel of this utility model; Figure 7 for Figure 6 Enlarged view of point B in the image; In the diagram: 1. Reactor; 2. Inner tank; 3. Outer tank; 4. Electric back pressure valve; 5. Electric heating rod; 6. Jacket; 7. Processing box; 8. Diamond wheel saw; 9. Motor; 10. Gear; 11. Rotating shaft; 12. Gas cylinder; 13. High-pressure conduit; 14. Mounting block; 15. Guide plate; 16. Discharge port; 17. Feed chute; 18. Inlet; 19. Baffle; 20. First electric push rod; 21. Pressure sensor; 22. Liquid inlet pipe; 23. Liquid outlet pipe; 24. Solenoid valve; 25. Filter plate; 26. Pull plate; 27. Slide rail; 28. Sealing plate; 29. ​​Second electric push rod; 30. Receiving tank. Detailed Implementation

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0022] Reference Figures 1 to 7 The shown is a separation device for recycling carbon fiber waste, including a base; It also includes reactor 1, pressurization mechanism, heating mechanism and crushing structure; The reactor 1 is located on the top of the base. The reactor 1 includes an inner tank 2 and an outer tank 3. The outer tank 3 is vertically arranged by four supporting legs. The inner tank 2 is fixed inside the outer tank 3. The inner tank 2 is a hollow circular tube structure. The pressurization mechanism is located between the base and the reactor 1. The pressurization mechanism includes an electric back pressure valve 4 and a conveying assembly. The conveying assembly is located on the top of the base, and the electric back pressure valve 4 is fixedly mounted on the conveying assembly. The heating mechanism is located inside the reactor 1. The heating mechanism includes several electric heating rods 5 and several support components. There is a sandwich 6 between the inner tank 2 and the outer tank 3. Several support components are equally spaced inside the sandwich 6. Each electric heating rod 5 is mounted on a support component. The shredding mechanism is mounted on the top of the base via a top plate. The shredding mechanism includes a processing box 7, a drive assembly, and several diamond wheel saws 8. The processing box 7 is fixed to the top of the top plate via four support legs. The drive assembly is inserted into the outer wall of the processing box 7. The several diamond wheel saws 8 are all mounted on the drive assembly and are staggered with each other.

[0023] Reference Figures 1 to 7As shown, the drive assembly includes a motor 9, two gears 10, and two rotating shafts 11. Each rotating shaft 11 is rotatably mounted on the processing box 7, and each gear 10 is fixedly mounted on one rotating shaft 11. The motor 9 is fixedly mounted on the outer wall of the processing box 7 via an L-shaped plate, and its output end is fixedly connected to one end of the rotating shaft 11. The two gears 10 are meshed together. Several diamond abrasive wheel saws 8 are fixedly connected to the outer walls of the two rotating shafts 11 respectively. This equipment is equipped with a controller, and all electrical devices on the equipment are electrically connected to the controller. When performing the separation work for carbon fiber waste recycling, the motor 9 is first started by the controller, thereby driving one of the rotating shafts 11 fixedly connected to its output end to rotate at high speed. Since each rotating shaft 11 is rotatably connected to the processing box 7, and each gear 10 is fixedly connected to the rotating shaft 11, the two gears 10 are meshed together, and several diamond abrasive wheel saws 8 are fixedly connected to the outer walls of the two rotating shafts 11 respectively, thereby driving several diamond abrasive wheel saws 8 to rotate at high speed from the outside to the inside.

[0024] Reference Figures 1 to 7 As shown, the conveying assembly includes a steel cylinder 12 and a high-pressure conduit 13. The steel cylinder 12 is located on the top of the base, and the high-pressure conduit 13 is fixedly installed on the gas outlet of the steel cylinder 12. The end of the high-pressure conduit 13 away from the steel cylinder 12 passes through the outer tank 3 and connects to the inner tank 2. An electric back pressure valve 4 is fixedly connected to the high-pressure conduit 13. When the inner tank 2 is sealed, the electric back pressure valve 4 is activated by the controller, thereby opening the high-pressure conduit 13. Since both ends of the high-pressure conduit 13 are connected to the gas outlet of the steel cylinder 12 and the inner tank 2 respectively, the high-pressure gas in the steel cylinder 12 enters the interior of the inner tank 2 through the high-pressure conduit 13. The detection end of the pressure sensor 21 extends into the interior of the inner tank 2 and can detect the real-time pressure inside the inner tank 2. When the detected real-time pressure value inside the inner tank 2 meets the high-pressure standard value for separation of carbon fiber waste recycling, a signal is sent to the controller, thereby closing the electric back pressure valve 4 through the controller and stopping the delivery of high-pressure gas. Preferably, the high-pressure gas can be nitrogen, hydrogen, or carbon dioxide.

[0025] Reference Figures 1 to 7 As shown, each support component includes two mounting blocks 14, which are fixedly installed on the inner wall of the outer tank 3. Each electric heating rod 5 is inserted into the two mounting blocks 14. When the inner tank 2 maintains a suitable high pressure value, several electric heating rods 5 are activated by the controller. Since several electric heating rods 5 are evenly installed in the interlayer 6, the ionic liquid inside the inner tank 2 can be evenly heated. Under high temperature and high pressure, the polymer matrix is ​​chemically decomposed into small molecule monomers or oligomers, thereby dissolving or peeling them off from the carbon fiber, thus removing the polymer matrix from the carbon fiber waste and obtaining pure, reusable carbon fiber.

[0026] Reference Figures 1 to 7As shown, two guide plates 15 are fixedly installed on the top inner side of the processing box 7, a discharge port 16 is provided on the bottom inner side of the processing box 7, a feeding slide 17 is fixedly installed at the bottom of the discharge port 16, a feed port 18 is provided on the top of the outer tank 3, a baffle 19 is slidably installed on the top of the feed port 18, a support plate is fixedly installed on the top of the outer tank 3, and a first electric push rod 20 is inserted into the support plate, the output end of which is fixedly connected to the baffle 19. When several diamond grinding wheel saws 8 rotate at high speed from the outside to the inside, carbon fiber waste is put into the interior of the processing box 7. Under the guidance of the two inclined guide plates 15, the carbon fiber waste entering the processing box 7 automatically slides into the space between several high-speed rotating diamond grinding wheel saws 8 and is shredded. The shredded carbon fiber waste slides into the interior of the feed port 18 through the discharge port 16 and the feeding slide 17, and then falls from the feed port 18 onto the filter plate 25 inside the inner tank 2.

[0027] Reference Figures 1 to 7 As shown, a pressure sensor 21 is inserted into the top of the outer tank 3, an inlet pipe 22 is fixedly installed on the top of the outer tank 3, and an outlet pipe 23 is fixedly installed at the bottom of the outer tank 3. Solenoid valves 24 are fixedly installed on the outer walls of both the inlet pipe 22 and the outlet pipe 23. A filter plate 25 is fixedly installed inside the inner tank 2. When the carbon fiber waste falls onto the filter plate 25 inside the inner tank 2, the solenoid valve 24 on the inlet pipe 22 is activated by the controller, thereby opening the inlet pipe 22 and supplying ionic liquid into the inner tank 2 through the inlet pipe 22. The liquid level of the ionic liquid is kept consistent with the height of the electric heating rod 5 to ensure the heating effect. Then, the solenoid valve 24 on the inlet pipe 22 is closed by the controller, thereby closing the inlet pipe 22. Then, the first electric push rod 20 is activated by the controller, thereby driving the baffle 19 to extend away from the support plate through its output end until the baffle 19 blocks the feed port 18, thereby sealing the inner tank 2.

[0028] Reference Figures 1 to 7 As shown, the inner tank 2 has a material inlet on its outer wall in the circumferential direction. A pull plate 26 is slidably installed inside the material inlet. When the material inlet is opened, the pull plate 26 is manually slid upward. The inner wall of the inner tank 2 has a receiving groove 30 for the pull plate 26 to slide into. The carbon fiber with the polymer matrix removed is then taken out through the material inlet.

[0029] Reference Figures 1 to 7As shown, a material-receiving window is provided on the outer wall of the outer tank 3 in the circumferential direction. Two slide rails 27 are fixed on both sides of the material-receiving window. A slider is slidably provided on the outer wall of each slide rail 27. A sealing plate 28 is fixed between the two sliders. A second electric push rod 29 is fixed on the outer wall of the outer tank 3. Its output end is fixedly connected to the sealing plate 28. When the polymer matrix on the carbon fiber waste separates from the carbon fiber, the solenoid valve 24 on the liquid outlet pipe 23 is activated by the controller, thereby opening the liquid outlet pipe 23 and discharging the used ionic liquid. Then, the second electric push rod 29 is activated by the controller, thereby causing its output end to drive the sealing plate 28 to slide upward, thereby opening the material-receiving window.

Claims

1. A separation device for recycling carbon fiber waste, comprising a base, characterized in that: It also includes a reaction vessel (1), a pressurization mechanism, a heating mechanism, and a crushing structure; The reactor (1) is located on the top of the base. The reactor (1) includes an inner tank (2) and an outer tank (3). The outer tank (3) is vertically set by four support legs. The inner tank (2) is fixed inside the outer tank (3). The inner tank (2) is a hollow circular tube structure. The pressurization mechanism is located between the base and the reactor (1). The pressurization mechanism includes an electric back pressure valve (4) and a conveying assembly. The conveying assembly is located on the top of the base, and the electric back pressure valve (4) is fixed on the conveying assembly. The heating mechanism is located inside the reactor (1). The heating mechanism includes several electric heating rods (5) and several support components. There is a sandwich layer (6) between the inner tank (2) and the outer tank (3). Several support components are equally spaced inside the sandwich layer (6). Each electric heating rod (5) is mounted on a support component. The shredding mechanism is mounted on the top of the base via a top plate. The shredding mechanism includes a processing box (7), a drive assembly, and several diamond wheel saws (8). The processing box (7) is fixed to the top of the top plate via four legs. The drive assembly is inserted into the outer wall of the processing box (7). Several diamond wheel saws (8) are mounted on the drive assembly and are interleaved with each other.

2. The separation equipment for recycling carbon fiber waste according to claim 1, characterized in that: The drive assembly includes a motor (9), two gears (10) and two rotating shafts (11). Each rotating shaft (11) is rotatably mounted on the processing box (7). Each gear (10) is fixedly mounted on a rotating shaft (11). The motor (9) is fixedly mounted on the outer wall of the processing box (7) via an L-shaped plate. Its output end is fixedly connected to one end of the rotating shaft (11). The two gears (10) are meshed together. Several diamond abrasive wheel saws (8) are fixedly connected to the outer walls of the two rotating shafts (11) respectively.

3. The separation equipment for recycling carbon fiber waste according to claim 2, characterized in that: The delivery assembly includes a steel cylinder (12) and a high-pressure conduit (13). The steel cylinder (12) is located on the top of the base, and the high-pressure conduit (13) is fixedly located on the outlet end of the steel cylinder (12). The end of the high-pressure conduit (13) away from the steel cylinder (12) passes through the outer tank (3) and communicates with the inner tank (2). The electric back pressure valve (4) is fixedly connected to the high-pressure conduit (13).

4. The separation equipment for recycling carbon fiber waste according to claim 3, characterized in that: Each support assembly includes two mounting blocks (14), both of which are fixed on the inner wall of the outer tank (3), and each electric heating rod (5) is inserted into the two mounting blocks (14).

5. The separation equipment for recycling carbon fiber waste according to claim 4, characterized in that: Two guide plates (15) are fixedly provided on the top inner side of the processing box (7). A discharge port (16) is provided on the bottom inner side of the processing box (7). A feeding slide (17) is fixedly provided at the bottom of the discharge port (16). A feed port (18) is provided on the top of the outer tank (3). A baffle (19) is slidably provided on the top of the feed port (18). A support plate is fixedly provided on the top of the outer tank (3). A first electric push rod (20) is inserted on the support plate, and its output end is fixedly connected to the baffle (19).

6. The separation equipment for recycling carbon fiber waste according to claim 5, characterized in that: A pressure sensor (21) is inserted into the top of the outer tank (3), an inlet pipe (22) is fixedly installed on the top of the outer tank (3), an outlet pipe (23) is fixedly installed at the bottom of the outer tank (3), a solenoid valve (24) is fixedly installed on the outer wall of both the inlet pipe (22) and the outlet pipe (23), and a filter plate (25) is fixedly installed inside the inner tank (2).

7. The separation equipment for recycling carbon fiber waste according to claim 6, characterized in that: The inner tank (2) has a material inlet on its outer wall in the circumferential direction, and a pull plate (26) is slidably provided inside the material inlet.

8. The separation equipment for recycling carbon fiber waste according to claim 7, characterized in that: The outer wall of the outer tank (3) is provided with a material picking window in the circumferential direction. Two slide rails (27) are fixed on both sides of the material picking window. A slider is slidably provided on the outer wall of each slide rail (27). A sealing plate (28) is fixed between the two sliders. A second electric push rod (29) is fixed on the outer wall of the outer tank (3). Its output end is fixedly connected to the sealing plate (28).

Images