A multi-stage crushing and sorting device for decommissioned wind turbine blades

Abstract

This invention relates to the field of waste recycling technology and discloses a multi-stage crushing and sorting device for decommissioned wind turbine blades. The device includes a single-shaft fine crusher with a hopper fixedly connected to its top. The hopper holds the coarsely crushed wind turbine blades. An arch-breaking mechanism is located at the bottom of the hopper to prevent material bridging. A feeding control mechanism is located below the arch-breaking mechanism at the bottom of the hopper, controlling the rate at which material falls into the single-shaft fine crusher to prevent excessive material buildup and damage. A material equalization mechanism is located at the top of the hopper. The arch-breaking mechanism utilizes the power of the single-shaft fine crusher to operate, thus preventing material accumulation and bridging, achieving continuous and uniform feeding, avoiding one-sided pile-up, and preventing equipment damage due to idling, thereby extending the equipment's service life.

Description

Technical Field

[0001] This invention relates to the field of waste recycling technology, specifically to a multi-stage crushing and sorting device for decommissioned wind turbine blades. Background Technology

[0002] Multi-stage crushing and sorting devices for decommissioned wind turbine blades typically employ a mechanical processing route of "coarse crushing, fine crushing, and sorting." The device first uses a twin-shaft shredder to coarsely crush the cut blade fragments into 100-300mm blocks, then a single-shaft fine crusher further pulverizes them to 30-50mm. Subsequently, magnetic separation and eddy current separation equipment separate iron and non-ferrous metals, while vibrating screens and air separators separate glass fiber, resin, and wood impurities. The entire system is interconnected and conveyed to achieve graded crushing and effective separation of the blade materials.

[0003] In existing multi-stage crushing and sorting devices for decommissioned wind turbine blades, the coarsely crushed material is conveyed to the hopper of the fine crushing device via a conveyor belt during the fine crushing process. However, the hopper of the current fine crusher only serves to hold the material. As the material accumulates, it bridges and arches in the hopper, causing the material to be suspended and unable to be discharged. This results in discontinuous material discharge, one-sided accumulation, and material jamming, which can easily damage the equipment and reduce the service life of the equipment components. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multi-stage crushing and sorting device for decommissioned wind turbine blades. This device solves the problem that existing multi-stage crushing and sorting devices are prone to bridging and arching in the hopper, leading to discontinuous material feeding, which in turn can easily damage the equipment and reduce its service life.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage crushing and sorting device for decommissioned wind turbine blades, comprising a single-shaft fine crusher, a hopper fixedly connected to the top of the single-shaft fine crusher, the hopper being used to hold the coarsely crushed wind turbine blades, an arch-breaking mechanism being provided at the bottom of the hopper to prevent material bridging and arching, and a feeding control mechanism being provided at the bottom of the hopper below the arch-breaking mechanism to control the rate at which material falls into the single-shaft fine crusher, preventing material from over-crushing. This can lead to jamming and damage to the single-shaft fine crusher. A material equalization mechanism is installed at the top of the hopper to agitate accumulated material and prevent it from overflowing. A magnetic separator is installed on one side of the single-shaft fine crusher to separate materials. A dual-shaft coarse crusher is installed on the other side of the single-shaft fine crusher to coarsely crush wind turbine blades. Conveyor belts are installed between the single-shaft fine crusher, the dual-shaft coarse crusher, and the magnetic separator to transport materials.

[0006] Preferably, the arch-breaking mechanism includes a crankshaft, with rotating connecting shafts fixedly connected to both ends of the crankshaft. Multiple movable rods are rotatably connected to the outside of the crankshaft, and rotating rods are slidably connected to the outside of the movable rods. A limit plate is fixedly connected to the end of the movable rod away from the crankshaft, and the end of the rotating rod away from the movable rod is rotatably connected to the bottom of the inner side of the hopper.

[0007] Preferably, the feeding control mechanism includes a fixed rod, which is fixedly connected to the inner side of the hopper. Multiple rotating control plates are rotatably connected to the outside of the fixed rod. A connecting column is fixedly connected between the bottoms of the multiple rotating control plates. A column is fixedly connected to the top of the connecting column. An elliptical block is fixedly connected to the top of the column. A cam is fixedly connected to the middle of the crankshaft. Multiple fixed cylinders are fixedly connected to the outside of the fixed rod. A return spring is provided inside each fixed cylinder. A limit block is slidably connected inside each fixed cylinder. A moving rod is fixedly connected to the end of the limit block away from the return spring. A push rod is fixedly connected between the multiple moving rods. A limit plate is fixedly connected to the bottom inner side of the hopper. Two limit slide rails are fixedly connected to the inner side of the hopper. The two ends of the push rod are slidably connected to the inside of the two limit slide rails.

[0008] Preferably, the material distribution mechanism includes a movable column, two limiting grooves are formed on the inner top of the hopper, the two ends of the movable column are slidably connected to the interior of the two limiting grooves, and mounting blocks are fixedly connected to both ends of the movable column. Limiting grooves are formed inside the mounting blocks, and a rotating column is arranged between the interiors of the two limiting grooves. A rotating roller is rotatably connected to the outside of the rotating column, and multiple material feeding plates are fixedly connected to the outside of the rotating roller. An eccentric wheel is fixedly connected to the outside of one of the rotating connecting shafts, a rotating ring is rotatably connected to the outside of the eccentric wheel, and a driving arm is fixedly connected to the outside of the rotating ring. The other end of the driving arm is rotatably connected to one end of the movable column, and a gear plate is fixedly connected to one end of the rotating roller.

[0009] Preferably, one end of the return spring is fixedly connected to the inside of the fixed cylinder, and the other end of the return spring is fixedly connected to the end of the limiting block away from the moving rod.

[0010] Preferably, the movable rod passes through one end of the fixed cylinder, and the rotating control plate is rotatably connected in the groove of the limiting plate.

[0011] Preferably, a movable sleeve is slidably connected to one side of one of the mounting blocks, and a fixed post is fixedly connected to the outside of the movable sleeve.

[0012] Preferably, a mounting rod is rotatably connected to the middle of the fixing column, and a torsion spring is provided inside the fixing column.

[0013] Preferably, one end of the mounting rod is fixedly connected to a pawl, one end of the torsion spring is fixedly connected to the inside of the fixing post, and the other end of the torsion spring is fixedly connected to the outside of the mounting rod.

[0014] Preferably, a limiting plate is fixedly connected to the outer side of the mounting block, and two sliding grooves are formed on the inner side of the top of the hopper, with the limiting plate slidably connected inside the sliding grooves.

[0015] This invention provides a multi-stage crushing and sorting device for decommissioned wind turbine blades. It has the following beneficial effects: 1. This invention utilizes the power of a single-shaft fine crusher to operate the arch-breaking mechanism, thereby preventing material accumulation and bridging, achieving continuous and uniform material feeding, avoiding one-sided pile-up, and preventing equipment damage due to idling, thus improving the service life of the equipment.

[0016] 2. This invention, through the coordinated operation of the arch-breaking mechanism and the material leveling mechanism, enables the material piled up on one side to be moved and flattened, thereby preventing excessive material accumulation on the feeding side from overflowing from the inside of the hopper and avoiding material waste. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the hopper of the present invention; Figure 3 This is a schematic diagram of the eccentric wheel of the present invention; Figure 4 This is a schematic diagram of the material limiting plate of the present invention; Figure 5 This is a schematic diagram of the rotating rod of the present invention; Figure 6 This is a schematic diagram of the connecting column of the present invention; Figure 7 This is a schematic diagram of the elliptical block structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the fixing cylinder of the present invention; Figure 9 This is a schematic diagram of the material equalization mechanism of the present invention; Figure 10 This is a schematic diagram of the structure of the movable sleeve of the present invention; Figure 11 This is a schematic diagram of the toothed disc of the present invention; Figure 12 This is a schematic diagram of the internal structure of the fixing column of the present invention.

[0018] The components include: 1. Single-shaft fine crusher; 2. Twin-shaft coarse crusher; 3. Hopper; 4. Arch breaking mechanism; 401. Crankshaft; 402. Rotating connecting shaft; 403. Movable rod; 404. Rotating rod; 405. Limiting plate; 5. Feed control mechanism; 501. Fixed rod; 502. Rotating control plate; 503. Connecting column; 504. Vertical column; 505. Elliptical block; 506. Cam; 507. Fixed cylinder; 508. Return spring; 509. Limiting block; 510. Moving rod; 511. Push rod; 512. 513. Limiting plate; 6. Limiting slide rail; 7. Material distribution mechanism; 8. Moving column; 9. Limiting slide groove; 10. Mounting block; 11. Rotating column; 12. Rotating roller; 13. Material feeding plate; 14. Eccentric wheel; 15. Rotating ring; 16. Driving arm; 17. Limiting groove; 18. Gear plate; 19. Moving sleeve; 20. Fixed column; 20. Mounting rod; 21. Torsion spring; 22. Pawl; 33. Limiting disc; 44. Sliding groove; 55. Magnetic separator; 66. Conveyor belt. Detailed Implementation

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

[0020] Please see the appendix Figure 1 -Appendix Figure 12 This invention provides a multi-stage crushing and sorting device for decommissioned wind turbine blades, including a single-shaft fine crusher 1. A hopper 3 is fixedly connected to the top of the single-shaft fine crusher 1. The hopper 3 is used to hold the coarsely crushed wind turbine blades. An arch-breaking mechanism 4 is provided at the bottom of the hopper 3 to prevent material bridging and arching. A feeding control mechanism 5 is provided at the bottom of the hopper 3 below the arch-breaking mechanism 4. The feeding control mechanism 5 controls the rate at which material falls into the single-shaft fine crusher 1 to prevent excessive material from causing the single-shaft fine crusher to break apart. To prevent the crusher 1 from jamming or being damaged, a material equalization mechanism 6 is installed at the top of the hopper 3. The material equalization mechanism 6 is used to move the accumulated material to prevent the material from accumulating on one side and overflowing into the hopper 3. A magnetic separator 7 is installed on one side of the single-shaft fine crusher 1. The magnetic separator 7 is used to separate the material. A double-shaft coarse crusher 2 is installed on the other side of the single-shaft fine crusher 1. The double-shaft coarse crusher 2 is used to coarsely crush the wind turbine blades. A conveyor belt 8 is installed between the single-shaft fine crusher 1, the double-shaft coarse crusher 2, and the magnetic separator 7. The conveyor belt 8 is used to transport the material.

[0021] The arch-breaking mechanism 4 includes a crankshaft 401, which provides an installation position and transmits rotational force. Rotary connecting shafts 402 are fixedly connected to both ends of the crankshaft 401, allowing the crankshaft 401 to be installed inside the hopper 3. Multiple movable rods 403 are rotatably connected to the outside of the crankshaft 401, and one of the rotating connecting shafts 402 is connected to the crushing shaft of the single-shaft fine crusher 1 via a belt. A rotating rod 404 is slidably connected to the outside of each movable rod 403, providing an installation position. When the crankshaft 401 rotates, it drives the movable rod 403 to slide on the rotating rod 404, causing the rotating rod 404 to rotate up and down. The end of the moving rod 403 away from the crankshaft 401 is fixedly connected to a limiting plate 405, which has a limiting function. The end of the rotating rod 404 away from the moving rod 403 is rotatably connected to the bottom of the inner side of the hopper 3. When the crushing shaft of the single-shaft fine crusher 1 rotates, it can drive the rotating connecting shaft 402 to rotate via a belt. After the rotating connecting shaft 402 rotates, it can drive the crankshaft 401 to rotate. After the crankshaft 401 rotates, it can drive one end of the moving rod 403 to rotate with the crankshaft 401. Then, the moving rod 403 can slide on the rotating rod 404 and drive the rotating rod 404 to rotate up and down. Then, when the material in the hopper 3 accumulates, it can play a role in breaking the arch.

[0022] The feeding control mechanism 5 includes a fixed rod 501, which provides an installation position. The fixed rod 501 is fixedly connected to the inner side of the hopper 3. Multiple rotating control plates 502 are rotatably connected to the outside of the fixed rod 501. A connecting column 503 is fixedly connected between the bottoms of the multiple rotating control plates 502. The connecting column 503 can connect the multiple rotating control plates 502 and provide an installation position. A column 504 is fixedly connected to the top of the connecting column 503. An elliptical block 505 is fixedly connected to the top of the column 504. The column 504 can connect the elliptical block 505 and the connecting column 503. A cam 506 is fixedly connected to the middle of the crankshaft 401. When the cam 506 rotates with the crankshaft 401, it can push the elliptical block 505 and the column 504 to rotate downwards. Multiple fixed cylinders 507 are fixedly connected to the outside of the fixed rod 501. The fixed cylinders 507 provide installation positions. A return spring 508 is installed inside the fixed cylinder 507. A limit block 509 is slidably connected inside the fixed cylinder 507, and the limit block 509 has a limiting function. A moving rod 510 is fixedly connected to the end of the limit block 509 away from the return spring 508. The moving rod 510 has a connecting function. Push rods 511 are fixedly connected between the multiple moving rods 510. A limiting plate 512 is fixedly connected to the bottom inner side of the hopper 3. When the reaction force of the return spring 508 pushes the limit block 509 and the moving rod 510 to move away from the fixed rod 501, the push rod 511 pushes the rotating control plate 502 to rotate upward, so that... The rotating control plate 502 blocks the groove of the limiting plate 512, thereby limiting the amount of material falling. Two limiting slide rails 513 are fixedly connected to the inner side of the hopper 3. The limiting slide rails 513 can limit both ends of the push rod 511, thereby limiting the movement trajectory of the push rod 511. Both ends of the push rod 511 are slidably connected inside the two limiting slide rails 513. One end of the return spring 508 is fixedly connected inside the fixed cylinder 507, and the other end of the return spring 508 is fixedly connected to the end of the limiting block 509 away from the moving rod 510. The moving rod 510 passes through one end of the fixed cylinder 507. The rotating control plate 502 is rotatably connected to the groove of the limiting plate 512. When the crankshaft 401 rotates, it can drive the cam 506 to rotate. When the protrusion 506 rotates downwards, it pushes the elliptical block 505 downwards, which in turn drives the column 504 and connecting column 503 downwards. This causes multiple rotating control plates 502 to rotate downwards and pushes the push rod 511 towards the fixed rod 501. This, in turn, pushes the moving rod 510 and the limiting block 509 towards the interior of the fixed cylinder 507, compressing the return spring 508. When the protrusion of the cam 506 moves upwards, the reaction force of the return spring 508 pushes the limiting block 509 and the moving rod 510 away from the fixed rod 501. This, in turn, pushes the push rod 511 away from the fixed rod 501, and finally, the push rod 511 lifts the rotating control plate 502.The rotating control plate 502 rotates into the groove of the limiting plate 512. When the rotating control plate 502 moves out of the groove of the limiting plate 512, the amount of material falling from the hopper 3 to the crushing shaft of the single-shaft fine crusher 1 increases. When the rotating control plate 502 rotates upward and blocks the groove of the limiting plate 512, part of the material passing through the groove is blocked, thereby reducing the amount of material entering the crushing shaft of the single-shaft fine crusher 1. Therefore, the amount of material falling into the single-shaft fine crusher 1 can be controlled, avoiding excessive material entering.

[0023] The material distribution mechanism 6 includes a movable column 601, which provides an installation position. Two limiting grooves 602 are formed on the inner top of the hopper 3, allowing the movable column 601 to be installed. Both ends of the movable column 601 are slidably connected to the interior of the two limiting grooves 602. Mounting blocks 603 are fixedly connected to both ends of the movable column 601, providing an installation position. Limiting grooves 610 are formed inside the mounting blocks 603. A rotating column 604 is positioned between the two limiting grooves 610, providing an installation position for the rotating column 604 and allowing it to move up and down within the limiting grooves 610. A rotating roller 605 is rotatably connected to the outside of the rotating column 604. Multiple material-pushing plates 606 are externally fixedly connected to 605. These plates can move accumulated materials. An eccentric wheel 607 is externally fixedly connected to one of the rotating connecting shafts 402. A rotating ring 608 is rotatably connected to the outside of the eccentric wheel 607. A driving arm 609 is externally fixedly connected to the outside of the rotating ring 608. Rotation of the eccentric wheel 607 drives the rotating ring 608 to rotate up and down, thereby moving the driving arm 609. The other end of the driving arm 609 is rotatably connected to one end of a moving column 601. A geared disc 611 is fixedly connected to one end of a rotating roller 605. A moving sleeve 612 is slidably connected to one side of one of the mounting blocks 603. The moving sleeve 612 provides the mounting position. A fixing column 613 is externally fixedly connected to the moving sleeve 612. The column 613 provides an installation position. A mounting rod 614 is rotatably connected to the middle of the column 613. A torsion spring 615 is installed inside the column 613. A pawl 616 is fixedly connected to one end of the mounting rod 614. The mounting rod 614 can accommodate the pawl 616 and can rotate back to its original position under the reaction force of the torsion spring 615. One end of the torsion spring 615 is fixedly connected to the inside of the column 613, and the other end is fixedly connected to the outside of the mounting rod 614. A limiting disc 617 is fixedly connected to the outer side of the mounting block 603. Two sliding grooves 618 are opened on the inner side of the top of the hopper 3. The limiting disc 617 is slidably connected inside the sliding grooves 618. After sliding inside the sliding grooves 618, the limiting disc 617 can limit... Mounting block 603 is designed to prevent wobbling. When the crushing shaft of the single-shaft fine crusher 1 rotates, the rotating connecting shaft 402 drives the eccentric wheel 607 to rotate. After the eccentric wheel 607 rotates, it drives the rotating ring 608 to rotate up and down, which in turn drives the driving arm 609 to move. The driving arm 609 drives the moving column 601 to reciprocate inside the hopper 3. When the moving column 601 moves, it drives the mounting block 603 to move, which in turn drives the rotating column 604, the rotating roller 605, and the material-pushing plate 606 to reciprocate. When the rotating column 604 moves towards the material accumulation area in the hopper 3, it causes the rotating roller 605 and the material-pushing plate 606 to rotate to the material accumulation area. Due to the setting of the limiting groove 610,The rotating roller 605 can rotate and move to a higher position of the material accumulation. When the moving column 601 drives the mounting block 603, rotating column 604, rotating roller 605 and material-pushing plate 606 away from the material accumulation position, the rotating roller 605 is locked and cannot rotate. Therefore, the material-pushing plate 606 can be used to push and flatten the pushed material, thereby preventing the material from accumulating on one side of the hopper 3 and thus preventing the material from overflowing from one side of the hopper 3. When the rotating roller 605 rotates towards the material accumulation position, the tooth surface of the toothed disc 611 and the pawl 606... The contact surface of plate 616 is inclined, so the teeth of the toothed disc 611 can push the pawl 616 open, thus not restricting the rotation of the rotating roller 605. When the rotating roller 605 moves away from the material accumulation area, the toothed surface of the pawl 616 contacting the toothed disc 611 becomes straight, allowing the pawl 616 to hold the toothed disc 611 in place, preventing its rotation and consequently preventing the rotating roller 605 from rotating. Therefore, when the rotating roller 605 and the material-pushing plate 606 move away from the material accumulation area, the material-pushing plate 606 can be used to move and flatten the accumulated material.

[0024] Working principle: When the crushing shaft of the single-shaft fine crusher 1 rotates, it can drive the rotating connecting shaft 402 to rotate via the belt. After the rotating connecting shaft 402 rotates, it can drive the crankshaft 401 to rotate. After the crankshaft 401 rotates, it can drive one end of the movable rod 403 to rotate with the crankshaft 401. Then, the movable rod 403 can slide on the rotating rod 404 and drive the rotating rod 404 to rotate up and down. Then, when the material in the hopper 3 accumulates, it can play a role in breaking the arch. When the crankshaft 401 rotates, it drives the cam 506 to rotate. When the protrusion of the cam 506 rotates downward, it pushes the elliptical block 505 downward, which in turn drives the column 504 and the connecting column 503 downward. This causes multiple rotating control plates 502 to rotate downward and pushes the push rod 511 towards the fixed rod 501, thereby pushing the moving rod 510 and the limiting block 509 into the fixed cylinder 507 and compressing the return spring 508. When the protrusion of the cam 506 moves upward, it pushes the limiting block 509 and the moving rod 510 away from the fixed rod 501 under the reaction force of the return spring 508. The movement of the push rod 501 in the direction of the fixed rod 501 can then push the push rod 511 away from the fixed rod 501. The push rod 511 can then lift the rotating control plate 502, causing the rotating control plate 502 to rotate into the groove of the limiting plate 512. When the rotating control plate 502 moves out of the groove of the limiting plate 512, the amount of material falling from the hopper 3 to the crushing shaft of the single-shaft fine crusher 1 increases. When the rotating control plate 502 rotates upward and blocks the groove of the limiting plate 512, part of the material passing through the groove is blocked, thereby reducing the amount of material entering the crushing shaft of the single-shaft fine crusher 1. Therefore, the amount of material falling into the single-shaft fine crusher 1 can be controlled to avoid excessive material entering. When the crushing shaft of the single-shaft fine crusher 1 rotates, it drives the eccentric wheel 607 to rotate via the rotating connecting shaft 402. The rotation of the eccentric wheel 607 drives the rotating ring 608 to rotate up and down, which in turn drives the driving arm 609 to move. The driving arm 609 then drives the moving column 601 to reciprocate inside the hopper 3. When the moving column 601 moves, it drives the mounting block 603 to move, which in turn drives the rotating column 604, rotating roller 605, and material-pushing plate 606 to reciprocate. When the rotating column 604 moves towards the material accumulation area in the hopper 3, it causes the rotating roller 605 and material-pushing plate 606 to rotate towards the material accumulation area. Due to the setting of the limiting groove 610, the rotating roller 605 can rotate and move towards the higher part of the material accumulation area. When the moving column 601 drives the mounting block 603, rotating column 604, rotating roller 605, and material-pushing plate 606 away from the material accumulation area... When the rotating roller 605 is locked and cannot rotate, the pushing material can be moved and flattened by the material-pushing plate 606, thus preventing the material from accumulating on one side of the hopper 3 and overflowing from the side of the hopper 3. When the rotating roller 605 rotates towards the material accumulation area, since the contact surface between the toothed disc 611 and the pawl 616 is inclined, the toothed disc 611 can push the pawl 616 open, thus not restricting the rotation of the rotating roller 605. When the rotating roller 605 moves away from the material accumulation area, the toothed disc 616 contacts the toothed disc 611 with a straight surface, so the pawl 616 can hold the toothed disc 611, thus preventing the toothed disc 611 from rotating, and thus preventing the rotating roller 605 from rotating. Therefore, when the rotating roller 605 and the material-pushing plate 606 move away from the material accumulation area, the material-pushing plate 606 can be used to move and flatten the accumulated material.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage crushing and sorting device for decommissioned wind turbine blades, comprising a single-shaft fine crusher (1), characterized in that, The top of the single-shaft fine crusher (1) is fixedly connected to a hopper (3), which is used to hold the coarsely crushed wind turbine blades. An arch-breaking mechanism (4) is provided at the bottom of the hopper (3) to prevent material bridging and arching. A feeding control mechanism (5) is provided below the arch-breaking mechanism (4) at the bottom of the hopper (3). The feeding control mechanism (5) controls the rate at which material falls into the single-shaft fine crusher (1) to prevent excessive material from causing jamming and damage to the single-shaft fine crusher (1). The top of the hopper (3) is provided with... The material equalization mechanism (6) is used to move the accumulated material to prevent the material from accumulating on one side and overflowing into the hopper (3). A magnetic separator (7) is provided on one side of the single-shaft fine crusher (1) and is used to separate the material. A double-shaft coarse crusher (2) is provided on the other side of the single-shaft fine crusher (1) and is used to coarsely crush wind turbine blades. A conveyor belt (8) is provided between the single-shaft fine crusher (1), the double-shaft coarse crusher (2), and the magnetic separator (7) and is used to convey the material.

2. The multi-stage crushing and sorting device for decommissioned wind turbine blades according to claim 1, characterized in that, The arch-breaking mechanism (4) includes a crankshaft (401), both ends of which are fixedly connected to a rotating connecting shaft (402). Multiple movable rods (403) are rotatably connected to the outside of the crankshaft (401). A rotating rod (404) is slidably connected to the outside of the movable rods (403). A limiting plate (405) is fixedly connected to one end of the movable rod (403) away from the crankshaft (401). The end of the rotating rod (404) away from the movable rod (403) is rotatably connected to the bottom of the inner side of the hopper (3).

3. The multi-stage crushing and sorting device for decommissioned wind turbine blades according to claim 2, characterized in that, The feeding control mechanism (5) includes a fixed rod (501), which is fixedly connected to the inner side of the hopper (3). Multiple rotating control plates (502) are rotatably connected to the outside of the fixed rod (501). A connecting column (503) is fixedly connected between the bottoms of the multiple rotating control plates (502). A column (504) is fixedly connected to the top of the connecting column (503). An elliptical block (505) is fixedly connected to the top of the column (504). A cam (506) is fixedly connected to the middle of the crankshaft (401). Multiple fixed cylinders are fixedly connected to the outside of the fixed rod (501). (507), a reset spring (508) is provided inside the fixed cylinder (507), a limit block (509) is slidably connected inside the fixed cylinder (507), a moving rod (510) is fixedly connected to one end of the limit block (509) away from the reset spring (508), a push rod (511) is fixedly connected between multiple moving rods (510), a limiting plate (512) is fixedly connected to the bottom inner side of the hopper (3), two limiting slide rails (513) are fixedly connected to the inner side of the hopper (3), and the two ends of the push rod (511) are slidably connected inside the two limiting slide rails (513).

4. The multi-stage crushing and sorting device for decommissioned wind turbine blades according to claim 2, characterized in that, The material distribution mechanism (6) includes a movable column (601). Two limiting grooves (602) are provided on the inner top of the hopper (3). The two ends of the movable column (601) are slidably connected to the interiors of the two limiting grooves (602). Mounting blocks (603) are fixedly connected to both ends of the movable column (601). Limiting grooves (610) are provided inside the mounting blocks (603). A rotating column (604) is provided between the interiors of the two limiting grooves (610). The rotating column (604) is rotatably connected to the exterior of a rotating component. A rotating roller (605) is externally fixedly connected to a plurality of feeding plates (606). An eccentric wheel (607) is externally fixedly connected to one of the rotating connecting shafts (402). A rotating ring (608) is rotatably connected to the outside of the eccentric wheel (607). A driving arm (609) is externally fixedly connected to the outside of the rotating ring (608). The other end of the driving arm (609) is rotatably connected to one end of the moving column (601). A toothed disc (611) is fixedly connected to one end of the rotating roller (605).

5. A multi-stage crushing and sorting device for decommissioned wind turbine blades according to claim 3, characterized in that, One end of the return spring (508) is fixedly connected to the inside of the fixed cylinder (507), and the other end of the return spring (508) is fixedly connected to the end of the limiting block (509) away from the moving rod (510).

6. A multi-stage crushing and sorting device for decommissioned wind turbine blades according to claim 3, characterized in that, The moving rod (510) passes through one end of the fixed cylinder (507), and the rotating control plate (502) is rotatably connected in the groove of the limiting plate (512).

7. A multi-stage crushing and sorting device for decommissioned wind turbine blades according to claim 4, characterized in that, One of the mounting blocks (603) is slidably connected to a movable sleeve (612) on one side, and a fixed post (613) is fixedly connected to the outside of the movable sleeve (612).

8. A multi-stage crushing and sorting device for decommissioned wind turbine blades according to claim 7, characterized in that, The fixing post (613) is rotatably connected to the middle of the mounting rod (614), and a torsion spring (615) is provided inside the fixing post (613).

9. A multi-stage crushing and sorting device for decommissioned wind turbine blades according to claim 8, characterized in that, One end of the mounting rod (614) is fixedly connected to a pawl (616), one end of the torsion spring (615) is fixedly connected to the inside of the fixing post (613), and the other end of the torsion spring (615) is fixedly connected to the outside of the mounting rod (614).

10. A multi-stage crushing and sorting device for decommissioned wind turbine blades according to claim 4, characterized in that, The mounting block (603) is fixedly connected to a limiting plate (617) on the outside. Two sliding grooves (618) are opened on the top inner side of the hopper (3). The limiting plate (617) is slidably connected inside the sliding groove (618).

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