Recovery production line and recovery method for retired wind power blades

Abstract

The invention relates to the field of wind power blade recovery, in particular to an ex-service wind power blade recovery production line which comprises a first-stage crusher, a second-stage crusher and a third-stage crusher and further comprises a dust removal system and a chain scraper conveyor, the chain scraper conveyor conveys fan blades into the first-stage crusher for first-stage crushing treatment, and the second-stage crusher conveys the fan blades into the third-stage crusher for second-stage crushing treatment; a first belt conveyor is arranged between the first-stage crusher and the second-stage crusher, a self-discharging type automatic iron remover is arranged on the first belt conveyor, and the second-stage crusher comprises a crushing mechanism, a screening mechanism and a material returning mechanism. Materials discharged from the discharging end of the screening mechanism are conveyed into a third-stage crusher through a second belt conveyor and a first spiral conveyor to be ground, and obtained materials are conveyed into a storage bin through a sixth spiral conveyor for standby application. According to the retired wind power blade recycling production line and method, the recycled fan blades are smashed in a three-stage sectional mode, efficient recycling of the fan blades is achieved, the resource recycling degree is improved, and the environmental influence pressure is reduced.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade recycling, specifically to a production line and method for recycling decommissioned wind turbine blades. Background Technology

[0002] Recycling retired wind turbine blades presents a significant challenge. The lightweight, high-strength, and corrosion-resistant properties of the blade's main material increase the difficulty of recycling and reuse. The epoxy resin matrix, once cured, cannot be reused, while the glass fiber, solidified within the fiber body, is extremely difficult to recycle. Typically, recycling wind turbine blades requires crushing and grinding. Therefore, we propose a production line and method for recycling retired wind turbine blades. Summary of the Invention

[0003] The purpose of this invention is to provide a production line and method for recycling decommissioned wind turbine blades, in order to solve the problems mentioned in the background art. To achieve the above objectives, the present invention provides the following technical solution: a decommissioned wind turbine blade recycling production line, comprising a primary crusher, a secondary crusher, and a tertiary crusher, and further comprising: a dust removal system and a chain conveyor. The chain conveyor transports the wind turbine blades to the primary crusher for primary crushing. A belt conveyor is provided between the primary and secondary crushers, and a self-unloading automatic iron remover is provided on the belt conveyor. The secondary crusher includes a crushing mechanism, a screening mechanism, and a return mechanism. The material discharged from the discharge end of the screening mechanism is transported to the tertiary crusher for grinding via a belt conveyor and a screw conveyor. The obtained material is transported to a vibrating screen for screening via screw conveyors and a vibrating screen. The material output from one discharge end of the vibrating screen is returned to the tertiary crusher for further grinding via screw conveyors and a screw conveyor. The material output from the other discharge end is transported to a storage silo via a screw conveyor. The air inlet of the dust removal system is connected to the working parts of the primary crusher, the secondary crusher, the tertiary crusher, and the vibrating screen via ash collection pipes.

[0004] Preferably, the crushing mechanism includes a crushing cylinder, and multiple crushing rods are evenly distributed on the inner wall of the crushing cylinder. The crushing cylinder is horizontally placed and fixed on the base. The upper middle part of the crushing cylinder is fixed and connected to the feed hopper, and the feed hopper is located below the discharge end of the belt conveyor. Discharge ports are opened at both ends of the lower end of the crushing cylinder. A rotating shaft is coaxially arranged inside the crushing cylinder, and both ends of the rotating shaft pass through and are slidably connected to the two end walls of the crushing cylinder. The rotating shaft rotates on the fixed axis on the end walls. A crushing roller is coaxially arranged inside the crushing cylinder, and crushing rods are evenly distributed on the outer peripheral wall of the crushing roller. The rotating shaft passes through and is fixedly connected to the inside of the crushing roller.

[0005] Preferably, a motor and a gearbox are fixed on the base. A worm gear is rotatably connected to the gearbox on a fixed axis. The output shaft of the motor is connected to the worm gear through a transmission mechanism inside the gearbox. A multi-faceted rod is coaxially inserted into the middle of the worm gear, and the multi-faceted rod is coaxially and fixedly connected to the rotating shaft.

[0006] Preferably, two worm gears are rotatably connected to the outer wall of the gearbox, and the two worm gears are symmetrically arranged on both sides of the worm. The worm is simultaneously engaged with both worm gears. A collar is sleeved on one end of the shaft connected to the polygonal rod and rotatably connected to the shaft. The outer wall of the collar is hinged to the two worm gear discs at positions away from the center by two connecting rods, and the two connecting rods are symmetrically arranged on both sides of the polygonal rod.

[0007] Preferably, the screening mechanism includes a screening box fixed on the base, the screening box being located below the crushing cylinder, the upper end of the screening box being fixed and connected to the lower end of the Y-shaped tube, and the two upper ends of the Y-shaped tube being connected to two discharge ports respectively.

[0008] Preferably, a guide plate is fixed on the inner wall of the screening box, and a bushing is fixedly inserted through and fixed in the middle of the guide plate. A shaft is inserted into and rotatably connected to the bushing. A gear is coaxially fixedly connected to the lower end of the shaft. A slide is fixed on the inner bottom surface of the screening box, and a rack is slidably connected to the slide. The rack meshes with the gear. The rack passes through and slidably connects to the side wall of the screening box. The end of the rack located outside the screening box is fixedly connected to a collar through a connecting rod. A conical screen is coaxially fixedly connected to the upper end of the shaft. The center of the outer convex surface of the conical screen is located below the lower end of the Y-shaped tube. A ring plate is fixed on the inner wall of the screening box. The ring plate is coaxially arranged with the conical screen. The outer edge of the conical screen is rotatably connected to the inner side wall of the ring plate. A through hole is opened on the ring plate. A scraper is fixed at the edge of the upper surface of the conical screen.

[0009] Preferably, the return mechanism includes a return cylinder fixed on a bracket, and the bracket is fixed on a base. The return cylinder is rotatably connected to a helical blade shaft, and the upper end of the helical blade shaft is coaxially fixed to the center of the inner ring of a ratchet. The lower end of the side wall of the return cylinder is connected to the lower end of the through hole through a first conduit, and the upper end of the side wall of the return cylinder is connected to the lower end of the side wall of the Y-shaped tube through a second conduit.

[0010] Preferably, a pump cylinder is fixed on one end wall of the crushing cylinder, and a piston plate is slidably connected inside the pump cylinder. The end of the rotating shaft away from the polygonal rod passes through the end wall of the pump cylinder and is rotatably connected to the piston plate. The side wall of the pump cylinder near the crushing cylinder is fixed and connected to a one-way valve and a one-way valve. The one-way valve is connected to an air pipe. The conduction direction of the one-way valve is towards the inside of the pump cylinder, and the conduction direction of the one-way valve is towards the air pipe. The end of the pump cylinder away from the crushing cylinder is connected to a slide cylinder through a liquid pipe, and the slide cylinder is fixed on a bracket. The piston plate is slidably connected inside the slide cylinder. A rack is fixed on the piston plate, and the rack is meshed with the teeth of the outer ring of the ratchet.

[0011] Preferably, a support rod is fixed on the inner wall of the screening box, and a diversion pipe is fixed on the support rod. Multiple nozzles are fixed and connected to the diversion pipe. The spray direction of the nozzles points to the bottom surface of the conical screen, and the air pipe is connected to the diversion pipe.

[0012] A recycling method for decommissioned wind turbine blades, comprising the following steps:

[0013] Step 1: The fan blades are conveyed to the primary crusher by the chain conveyor for primary crushing. The crushed material is then discharged onto the belt conveyor and conveyed to the secondary crusher for further crushing. During the movement of the material by the belt conveyor, it passes through a self-unloading automatic iron remover for iron removal.

[0014] Step 2: The iron-removed material enters the secondary crusher, where it undergoes compound crushing by the crushing mechanism and is then discharged to the screening mechanism for screening. Material with a fineness of less than or equal to 15mm is discharged onto the second belt conveyor, while material with a fineness greater than 15mm is returned to the crushing mechanism for further crushing through the return material mechanism.

[0015] Step 3: Belt conveyor 2 transports the material to screw conveyor 1, which then transports it to the tertiary crusher for grinding.

[0016] Step 4: The material discharged from the tertiary crusher is conveyed to the vibrating screen by screw conveyor 2 and screw conveyor 3 for screening. The material with a discharge particle size greater than 80 mesh is returned to the tertiary crusher by screw conveyor 4 and screw conveyor 5 for further grinding. The material with a discharge particle size less than or equal to 80 mesh is conveyed to the storage silo by screw conveyor 6 for later use.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] In this invention, the three-stage segmented crushing process for the recycled wind turbine blades greatly improves work efficiency, reduces the workload on single-stage equipment, achieves efficient recycling of wind turbine blades, increases resource reuse, and reduces environmental impact. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall assembly structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the secondary crusher in this invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the AA section structure;

[0022] Figure 4 This is a magnified structural diagram of point B in Figure 2;

[0023] Figure 5 This is a top view of the conical screen and ring plate structure in this invention;

[0024] Figure 6 This is a schematic diagram of the unfolded structure of the inner wall of the crushing cylinder in this invention.

[0025] In the diagram: 1. Chain conveyor; 2. Primary crusher; 3. Belt conveyor I; 4. Self-unloading automatic iron remover; 5. Secondary crusher; 6. Belt conveyor II; 7. Base; 8. Crushing cylinder; 9. Screening box; 10. Dust removal system; 11. Screw conveyor I; 12. Screw conveyor II; 13. Screw conveyor III; 14. Tertiary crusher; 15. Vibrating screen; 16. Screw conveyor IV; 17. Screw conveyor V; 18. Screw conveyor VI; 19. Storage silo; 20. Support frame; 21. Feed hopper; 22. Crushing roller; 23. Shaft; 24. Worm gear; 25. Motor; 26. Gearbox; 27. Connecting rod I; 28. 1. Discharge port; 29. ​​Y-shaped pipe; 30. Conical screen; 31. Scraper; 32. Shaft; 33. Guide plate; 34. Bushing; 35. Support rod; 36. Connecting rod II; 37. Rack I; 38. Gear; 39. Slide; 40. Return cylinder; 41. Guide tube I; 42. Guide tube II; 43. Spiral blade shaft; 44. Ratchet; 45. Pump cylinder; 46. Piston plate I; 47. Check valve I; 48. Check valve II; 49. Air pipe; 50. Liquid pipe; 51. Slide cylinder; 52. Piston plate II; 53. Rack II; 54. Worm gear; 55. Collar; 56. Multi-faceted rod; 57. Ring plate; 58. Through hole; 59. Diverter pipe; 60. Nozzle. Detailed Implementation

[0026] The technical solutions of 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.

[0027] Please see Figures 1 to 6 This invention provides a technical solution: a decommissioned wind turbine blade recycling production line, including a primary crusher 2, a secondary crusher 5, and a tertiary crusher 14, and further including: a dust removal system 10 and a chain conveyor 1. The chain conveyor 1 transports the wind turbine blades to the primary crusher 2 for primary crushing. A belt conveyor 3 is installed between the primary crusher 2 and the secondary crusher 5, and a self-unloading automatic iron remover 4 is installed on the belt conveyor 3. The secondary crusher 5 includes a crushing mechanism, a screening mechanism, and a return mechanism. The material discharged from the discharge end of the screening mechanism is transported by a belt conveyor 6 and a screw conveyor 1. The material is fed to the three-stage crusher 14 for grinding. The resulting material is then conveyed to the vibrating screen 15 for screening via screw conveyor 2 12 and screw conveyor 3 13. The material output from one of the discharge ends of the vibrating screen 15 is returned to the three-stage crusher 14 for further grinding via screw conveyor 4 16 and screw conveyor 5 17. The material output from the other discharge end is conveyed to the storage bin 19 via screw conveyor 6 18 for later use. The air inlet of the dust removal system 10 is connected to the working parts of the first-stage crusher 2, the second-stage crusher 5, the third-stage crusher 14 and the vibrating screen 15 via dust collection pipes.

[0028] In this embodiment, the crushing mechanism includes a crushing cylinder 8, and multiple crushing rods are evenly distributed on the inner wall of the crushing cylinder 8. The crushing cylinder 8 is horizontally placed and fixed on the base 7. The upper middle part of the crushing cylinder 8 is fixed and connected to the feed hopper 21, and the feed hopper 21 is located below the discharge end of the belt conveyor 3. Discharge ports 28 are opened at both ends of the lower end of the crushing cylinder 8. A rotating shaft 23 is coaxially arranged inside the crushing cylinder 8, and both ends of the rotating shaft 23 pass through and are slidably connected to the two end walls of the crushing cylinder 8. The rotating shaft 23 rotates on the fixed axis on the end walls. A crushing roller 22 is coaxially arranged inside the crushing cylinder 8, and crushing rods are evenly distributed on the outer peripheral wall of the crushing roller 22. The rotating shaft 23 passes through and is fixedly connected to the inside of the crushing roller 22. A motor 25 and a reduction gearbox 26 are fixed on the base 7. A worm gear 24 is rotatably connected to a fixed axis on a gearbox 26, and the output shaft of the motor 25 is connected to the worm gear 24 via a transmission mechanism inside the gearbox 26. A multi-faceted rod 56 is coaxially inserted into the middle of the worm gear 24, and the multi-faceted rod 56 is coaxially fixedly connected to a rotating shaft 23. Two worm wheels 54 are rotatably connected to a fixed axis on the outer wall of the gearbox 26. The two worm wheels 54 are symmetrically arranged on both sides of the worm gear 24, and the worm gear 24 is simultaneously engaged with both worm wheels 54. A collar 55 is sleeved and rotatably connected to one end of the rotating shaft 23 connected to the multi-faceted rod 56. The outer wall of the collar 55 is hinged to the positions on the disks of the two worm wheels 54 away from the center by two connecting rods 27, and the two connecting rods 27 are symmetrically arranged on both sides of the multi-faceted rod 56.

[0029] In this embodiment, the screening mechanism includes a screening box 9 fixed on the base 7. The screening box 9 is located below the crushing cylinder 8. The upper end of the screening box 9 is fixed and connected to the lower end of the Y-shaped tube 29. The two upper ends of the Y-shaped tube 29 are respectively connected to two discharge ports 28. A guide plate 33 is fixed on the inner wall of the screening box 9, and a bushing 34 is fixedly inserted through and fixed in the middle of the guide plate 33. A shaft 32 is inserted into and rotatably connected to the bushing 34. A gear 38 is coaxially fixedly connected to the lower end of the shaft 32. A slide 39 is fixed on the inner bottom surface of the screening box 9, and a rack 37 is slidably connected to the slide 39. The rack 37 and the gear 38 meshing connection, rack 37 passes through and slides on the side wall of screening box 9, and the end of rack 37 located outside screening box 9 is fixedly connected to collar 55 through connecting rod 36. The upper end of shaft 32 is coaxially fixedly connected to conical screen 30, and the center of the outer convex surface of conical screen 30 is located below the lower end of Y-shaped tube 29. A ring plate 57 is fixed on the inner wall of screening box 9, and the ring plate 57 is coaxially arranged with conical screen 30. The outer edge of conical screen 30 is rotatably connected to the inner side wall of ring plate 57. A through hole 58 is opened on ring plate 57. A scraper 31 is fixed at the edge of the upper surface of conical screen 30.

[0030] In this embodiment, the return mechanism includes a return cylinder 40 fixed on a bracket 20, and the bracket 20 is fixed on a base 7. A spiral blade shaft 43 is rotatably connected to the inside of the return cylinder 40, and the upper end of the spiral blade shaft 43 is coaxially fixed to the center of the inner ring of a ratchet 44. The lower end of the side wall of the return cylinder 40 is connected to the lower end of the through hole 58 through a first conduit 41, and the upper end of the side wall of the return cylinder 40 is connected to the lower end of the side wall of the Y-shaped tube 29 through a second conduit 42. A pump cylinder 45 is fixed on one end wall of the crushing cylinder 8, and a piston plate 46 is slidably connected inside the pump cylinder 45. The end of the rotating shaft 23 away from the polygonal rod 56 passes through the pump cylinder 45. The end wall of pump cylinder 45 is rotatably connected to piston plate 46. The side wall of pump cylinder 45 is fixed and connected to one-way valve 47 and one-way valve 48 at the end near crushing cylinder 8. One-way valve 48 is connected to air pipe 49. The conduction direction of one-way valve 47 is towards the inside of pump cylinder 45, and the conduction direction of one-way valve 48 is towards air pipe 49. The end of pump cylinder 45 away from crushing cylinder 8 is connected to slide cylinder 51 through liquid pipe 50, and slide cylinder 51 is fixed on bracket 20. Piston plate 52 is slidably connected inside slide cylinder 51. Rack 53 is fixed on piston plate 52, and rack 53 is meshed with the teeth of the outer ring of ratchet 44.

[0031] In this embodiment, a support rod 35 is fixed on the inner wall of the screening box 9, and a diversion pipe 59 is fixed on the support rod 35. Multiple nozzles 60 are fixed and connected to the diversion pipe 59. The spray direction of the nozzles 60 is directed towards the bottom surface of the conical screen 30. The air pipe 49 is connected to the diversion pipe 59.

[0032] The method of use and advantages of this invention: The working process of this retired wind turbine blade recycling production line is as follows:

[0033] Step 1: The fan blades are conveyed to the primary crusher 2 by the chain conveyor 1 for primary crushing. The crushed material is discharged onto the belt conveyor 3 and then conveyed to the secondary crusher 5 for further crushing. During the movement of the material by the belt conveyor 3, it passes through the self-unloading automatic iron remover 4 for iron removal.

[0034] Step Two: After iron removal, the material enters the feed hopper 21. The motor 25 drives the worm 24 to rotate through the reduction mechanism in the gearbox 26. This causes the worm 24 to drive the rotating shaft 23 to rotate via the multi-faceted rod 56. The rotating shaft 23 then drives the crushing roller 22 to rotate, causing the crushing rods on the crushing roller 22 and the crushing rods on the inner wall of the crushing cylinder 8 to crush the material. Simultaneously, the rotation of the worm 24 drives the two worm wheels 54 to rotate synchronously in opposite directions. The two worm wheels 54, through the two connecting rods 27, reciprocate with a pushing or pulling force on the collar 55. This causes the collar 55 to drive the rotating shaft 23 and the crushing roller 22 to reciprocate within the crushing cylinder 8, thereby improving the crushing efficiency of the material. Furthermore, the crushing roller 2... 2. While reciprocating, the crushed material is pushed to the two discharge ports 28 and discharged from the discharge ports 28. It then passes through the Y-shaped pipe 29 into the screening box 9, where it falls onto the conical screen 30 for screening. Material with a fineness of less than or equal to 15mm falls onto the guide plate 33 and is discharged onto the belt conveyor 6. Material with a fineness greater than 15mm rolls along the slope of the upper surface of the conical screen 30. Simultaneously, the collar 55 reciprocates, driving the rack 37 to reciprocate via the connecting rod 36. This causes the rack 37 to drive the gear 38 and shaft 32 to reciprocate, which in turn causes the shaft 32 to drive the conical screen 30 to reciprocate, thus causing the conical screen 30 to rotate. This causes the material on the conical screen 30 to move back and forth. The material rolls downwards to avoid accumulation and spreads evenly, improving screening efficiency. Material that does not meet the discharge particle size requirements rolls onto the ring plate 57. Simultaneously, the conical screen 30 rotates, and the scraper 31 pushes the material to the through hole 58. The material then enters the lower end of the return cylinder 40 through the first guide pipe 41. The reciprocating movement of the rotating shaft 23 drives the first piston plate 46 to reciprocate within the pump cylinder 45, causing the first piston plate 46 to alternately apply suction and compression forces to the space to its left. This causes the oil in the space to be drawn out from or transported into the slide cylinder 51 through the liquid pipe 50, further causing the second piston plate 52 to reciprocate within the slide cylinder 51. The slide cylinder 51 simultaneously drives the second rack 53 to reciprocate. This causes the rack 2 53 to drive the spiral blade shaft 43 to rotate intermittently in one direction via the ratchet 44, thereby causing the spiral blade shaft 43 to convey the material at the lower end upward and re-enter the feed hopper 21 through the guide tube 2 42, and then return to the crushing cylinder 8 for further crushing until it meets the discharge particle size requirements. While the piston plate 1 46 reciprocates, it also applies compression and suction forces to the space on its right side, causing the space to draw in external air through the one-way valve 1 47 and convey it to the air pipe 49 through the one-way valve 2 48. The air pipe 49 then conveys the air to the diversion pipe 59, and then sprays it out from the bottom of the conical screen 30 through each nozzle 60, thereby clearing the conical screen 30 and improving the screening efficiency.

[0035] Step 3: Belt conveyor 26 transports the material to screw conveyor 11, and screw conveyor 11 then transports it to the three-stage crusher 14 for grinding.

[0036] Step 4: The material discharged from the tertiary crusher 14 is conveyed to the vibrating screen 15 by screw conveyor 2 12 and screw conveyor 3 13 for screening. The material with a discharge particle size greater than 80 mesh is returned to the tertiary crusher 14 by screw conveyor 4 16 and screw conveyor 5 17 for further grinding. The material with a discharge particle size less than or equal to 80 mesh is conveyed to the storage silo by screw conveyor 6 18 for later use.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A production line for recycling decommissioned wind turbine blades, comprising a primary crusher (2), a secondary crusher (5), and a tertiary crusher (14), characterized in that: Also includes: The dust removal system (10) and chain conveyor (1) are used to transport the fan blades to the primary crusher (2) for primary crushing. A belt conveyor (3) is installed between the primary crusher (2) and the secondary crusher (5), and a self-unloading automatic iron remover (4) is installed on the belt conveyor (3). The secondary crusher (5) includes a crushing mechanism, a screening mechanism and a return mechanism. The material discharged from the discharge end of the screening mechanism is transported to the tertiary crusher (14) for grinding through a belt conveyor (6) and a screw conveyor (11). The obtained material is then processed by the screw conveyor. The material is conveyed by the second screw conveyor (12) and the third screw conveyor (13) to the vibrating screen (15) for screening. The material output from one of the discharge ends of the vibrating screen (15) is returned to the third-stage crusher (14) for further grinding by the fourth screw conveyor (16) and the fifth screw conveyor (17). The material output from the other discharge end is conveyed to the storage bin (19) for later use by the sixth screw conveyor (18). The air inlet of the dust removal system (10) is connected to the working parts of the first-stage crusher (2), the second-stage crusher (5), the third-stage crusher (14) and the vibrating screen (15) through the dust collection pipe.

2. The decommissioned wind turbine blade recycling production line according to claim 1, characterized in that: The crushing mechanism includes a crushing cylinder (8), and multiple crushing rods are evenly distributed on the inner wall of the crushing cylinder (8). The crushing cylinder (8) is horizontally placed and fixed on the base (7). The upper middle part of the crushing cylinder (8) is fixed and connected to the feed hopper (21), and the feed hopper (21) is located below the discharge end of the belt conveyor (3). The lower ends of the crushing cylinder (8) are provided with discharge ports (28). The crushing cylinder (8) is coaxially provided with a rotating shaft (23) inside, and the two ends of the rotating shaft (23) are slidably connected to the two end walls of the crushing cylinder (8). The rotating shaft (23) rotates on the end walls. The crushing cylinder (8) is coaxially provided with a crushing roller (22), and crushing rods are evenly distributed on the outer peripheral wall of the crushing roller (22). The rotating shaft (23) is slidably connected to the inside of the crushing roller (22).

3. The decommissioned wind turbine blade recycling production line according to claim 2, characterized in that: A motor (25) and a gearbox (26) are fixed on the base (7). A worm gear (24) is rotatably connected to the gearbox (26) on a fixed axis. The output shaft of the motor (25) is connected to the worm gear (24) through a transmission mechanism inside the gearbox (26). A multi-faceted rod (56) is coaxially inserted into the middle of the worm gear (24), and the multi-faceted rod (56) is coaxially fixedly connected to the rotating shaft (23).

4. The decommissioned wind turbine blade recycling production line according to claim 3, characterized in that: Two worm gears (54) are rotatably connected to the outer wall of the gearbox (26) on a fixed axis. The two worm gears (54) are symmetrically arranged on both sides of the worm (24), and the worm (24) is simultaneously engaged with the two worm gears (54). A collar (55) is sleeved on one end of the shaft (23) connected to the polygonal rod (56) and rotatably connected to it on a fixed axis. The outer wall of the collar (55) is hinged to the two worm gears (54) at positions away from the center by two connecting rods (27), and the two connecting rods (27) are symmetrically arranged on both sides of the polygonal rod (56).

5. The decommissioned wind turbine blade recycling production line according to claim 4, characterized in that: The screening mechanism includes a screening box (9) fixed on a base (7). The screening box (9) is located below the crushing cylinder (8). The upper end of the screening box (9) is fixed and connected to the lower end of a Y-shaped tube (29). The two upper ends of the Y-shaped tube (29) are respectively connected to two discharge ports (28).

6. The decommissioned wind turbine blade recycling production line according to claim 5, characterized in that: A guide plate (33) is fixed on the inner wall of the screening box (9), and a bushing (34) is fixedly inserted through and fixed in the middle of the guide plate (33). A shaft (32) is inserted into and rotatably connected to the bushing (34). A gear (38) is coaxially fixedly connected to the lower end of the shaft (32). A slide (39) is fixed on the inner bottom surface of the screening box (9), and a rack (37) is slidably connected on the slide (39). The rack (37) meshes with the gear (38). The rack (37) passes through and is slidably connected to the side wall of the screening box (9). The rack (37) is located in the screening box. (9) One end of the outer part is fixedly connected to the collar (55) via the connecting rod (36). The upper end of the shaft (32) is coaxially fixedly connected to the conical screen (30), and the center of the outer convex surface of the conical screen (30) is located below the lower end of the Y-shaped tube (29). A ring plate (57) is fixed on the inner wall of the screening box (9), and the ring plate (57) is coaxially arranged with the conical screen (30). The outer edge of the conical screen (30) is rotatably connected to the inner side wall of the ring plate (57). A through hole (58) is opened on the ring plate (57). A scraper (31) is fixed at the edge of the upper surface of the conical screen (30).

7. The decommissioned wind turbine blade recycling production line according to claim 6, characterized in that: The material return mechanism includes a material return cylinder (40) fixed on a bracket (20), and the bracket (20) is fixed on a base (7). The material return cylinder (40) is rotatably connected to a helical blade shaft (43) with its internal fixed axis. The upper end of the helical blade shaft (43) is coaxially fixed to the center of the inner ring of a ratchet (44). The lower end of the side wall of the material return cylinder (40) is connected to the lower end of the through hole (58) through a first conduit (41). The upper end of the side wall of the material return cylinder (40) is connected to the lower end of the side wall of the Y-shaped tube (29) through a second conduit (42).

8. The decommissioned wind turbine blade recycling production line according to claim 7, characterized in that: A pump cylinder (45) is fixed on one end wall of the crushing cylinder (8), and a piston plate (46) is slidably connected inside the pump cylinder (45). The end of the rotating shaft (23) away from the polygonal rod (56) passes through the end wall of the pump cylinder (45) and is rotatably connected to the piston plate (46) on a fixed axis. The side wall of the pump cylinder (45) is fixed and connected to a one-way valve (47) and a one-way valve (48) at the end near the crushing cylinder (8). The one-way valve (48) is connected to an air pipe (49). The one-way valve (47) is connected to a gas pipe (49). The conduction direction of the valve (45) is directed towards the inside of the pump cylinder (45), and the conduction direction of the one-way valve (48) is directed towards the air pipe (49). The end of the pump cylinder (45) away from the crushing cylinder (8) is connected to the slide cylinder (51) through the liquid pipe (50), and the slide cylinder (51) is fixed on the bracket (20). The inside of the slide cylinder (51) is slidably connected to the piston plate (52), and the piston plate (52) is fixed with the rack (53), which is engaged with the teeth of the outer ring of the ratchet (44).

9. A decommissioned wind turbine blade recycling production line according to claim 8, characterized in that: A support rod (35) is fixed on the inner wall of the screening box (9), and a diversion pipe (59) is fixed on the support rod (35). Multiple nozzles (60) are fixed and connected on the diversion pipe (59). The spray direction of the nozzles (60) is directed towards the bottom surface of the conical screen (30). The air pipe (49) is connected to the diversion pipe (59).

10. The method of using a decommissioned wind turbine blade recycling production line according to any one of claims 1-9, characterized in that: Step 1: The fan blades are conveyed to the primary crusher (2) by the chain conveyor (1) for primary crushing. The crushed material is discharged onto the belt conveyor (3) and conveyed to the secondary crusher (5) for further crushing. During the movement of the material by the belt conveyor (3), it passes through the self-unloading automatic iron remover (4) for iron removal. Step 2: The iron-removed material enters the secondary crusher (5), and the material is subjected to compound crushing treatment by the crushing mechanism and discharged to the screening mechanism for screening. The material with a fineness of less than or equal to 15mm is discharged onto the belt conveyor (6), and the material with a fineness greater than 15mm is returned to the crushing mechanism for further crushing through the return material mechanism. Step 3: Belt conveyor 2 (6) transports the material to screw conveyor 1 (11), and screw conveyor 1 (11) transports it to the three-stage crusher (14) for grinding. Step 4: The material discharged from the three-stage crusher (14) is conveyed to the vibrating screen (15) by screw conveyor two (12) and screw conveyor three (13) for screening. The material with a discharge particle size greater than 80 mesh is returned to the three-stage crusher (14) by screw conveyor four (16) and screw conveyor five (17) for further grinding. The material with a discharge particle size less than or equal to 80 mesh is conveyed to the storage silo by screw conveyor six (18) for later use.

Images