Recycling method of fan blade

Abstract

The invention relates to the technical field of fan blade recycling, and provides a fan blade recycling method which comprises the following steps: S1, marking a cutting line on a fan blade, and placing the fan blade on a cutting table; s2, a plurality of buffering grooves are formed in the cutting line on the blade tip, every two adjacent buffering grooves are formed in a spaced mode, and the projections of the multiple buffering grooves on the horizontal plane are continuously arranged; s3, a circular saw blade is made to move along the cutting line, and the fan blade is cut into a plurality of plates; s4, the plate is crushed and screened through a crusher and a screening machine, and blade chippings are prepared; and S5, the blade chippings and concrete are mixed and stirred evenly, and the building bricks are prepared. According to the fan blade, the buffer groove is formed in the blade tip, the position of the buffer groove is limited, the circular saw blade cannot make contact with the two layers of blade plates at the same time, the recovery efficiency of the fan blade is improved, the circular saw blade can be protected, and the service life of the circular saw blade is prolonged.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade recycling technology, and in particular to a method for recycling wind turbine blades. Background Technology

[0002] As one of the core forms of clean and renewable energy, wind power has experienced explosive growth. However, the service life of wind turbine blades is 20-25 years, and the issue of resource recycling of a large number of retired wind turbine blades is becoming increasingly prominent, which has also become a key bottleneck for the sustainable development of the wind power industry.

[0003] Patent CN118950671A discloses a method for recycling retired wind turbine blades, comprising the following steps: S1, supporting and fixing the wind turbine blades; S2, cutting the wind turbine blades along the dividing lines; S3, dividing the first and second parts into multiple flattened segments; S4, placing each flattened segment into a crusher and crushing it into blade fragments; S5, vibrating the blade fragments to recover the glass fibers within them. This invention, by setting a first, second, and third dividing line, with the first and second dividing lines positioned opposite each other on either side of the web, and the third dividing line spanning the web, and ensuring that each flattened segment contains at least one third dividing line, not only avoids the formation of closed cavities during blade cutting, ensuring the safety of the wind turbine blade recycling process, but also reduces the width of the flattened segments, making them adaptable to different cutting devices.

[0004] The above technical solution uses a circular saw blade to cut the wind turbine blades. However, the structure of the tip of the wind turbine blade is flat. When using a circular saw blade to cut the tip of the wind turbine blade, the circular saw blade will contact two layers of blade plates at the same time, resulting in greater resistance of the circular saw blade. This not only reduces the cutting efficiency, but also easily damages the circular saw blade. Summary of the Invention

[0005] In view of this, the present invention proposes a method for recycling wind turbine blades, which can improve the cutting convenience of the circular saw blade for wind turbine blades and increase the recycling efficiency of wind turbine blades.

[0006] The technical solution of this invention is implemented as follows: This invention provides a method for recycling wind turbine blades, comprising the following steps: S1, marking cutting lines on the wind turbine blades, placing the wind turbine blades on a cutting table, making the blade tip parallel to the horizontal plane, wherein the projections of the cutting lines on the top side and the bottom side of the blade tip on the horizontal plane coincide; S2, opening multiple buffer grooves on the cutting lines on the blade tip, wherein adjacent buffer grooves are spaced apart, the projections of the multiple buffer grooves on the horizontal plane are continuously arranged, and the projections of the multiple buffer grooves on the horizontal plane coincide with the projections of the cutting lines on the blade tip on the horizontal plane; S3, moving a circular saw blade along the cutting lines to cut the wind turbine blades into multiple plates; S4, crushing and screening the plates using a crusher and a screening machine to obtain blade fragments; S5, mixing the blade fragments with concrete and preparing building bricks.

[0007] Based on the above technical solutions, preferably, in step S4, after the blade fragments are obtained, an electrostatic separator is used to remove the metal particles from the blade fragments.

[0008] Based on the above technical solutions, preferably, the blade debris is 200-400 mesh powder with an aspect ratio ≥10:1.

[0009] Based on the above technical solutions, preferably, the crusher includes a crushing box, two crushing rollers, and a conveyor, wherein the crushing box has an inlet and an outlet opposite to each other on its periphery; the crushing rollers are rotatably arranged inside the crushing box, and the two crushing rollers are arranged parallel and spaced apart in the vertical direction; the conveyor is arranged on one side of the crushing box and corresponds to the position of the inlet.

[0010] Based on the above technical solutions, preferably, the conveyor includes a body, two drive rollers and a conveyor belt, wherein the drive rollers are rotatably mounted on the body, and the two drive rollers are spaced apart in the horizontal direction; the conveyor belt is fitted onto the two drive rollers.

[0011] Based on the above technical solutions, preferably, the conveyor further includes a rotating block, a first positioning rod, and a second positioning rod. A rotating groove is formed on the conveyor belt, and the rotating block is rotatably disposed within the rotating groove. Both the first positioning rod and the second positioning rod are fixedly disposed on the rotating block. When the rotating block is above the conveyor belt, the first positioning rod abuts against the inner side of the conveyor belt, and the rotating block forms a clamping groove with the top side of the conveyor belt. The upper end of the rotating block is pointed, and the height of the clamping groove gradually decreases in the direction away from the crushing box. When the rotating block is below the conveyor belt, the second positioning rod abuts against the inner side of the conveyor belt, and the rotating block does not extend beyond the bottom side of the conveyor belt.

[0012] Based on the above technical solutions, preferably, multiple rotating slots, rotating blocks, first positioning rods and second positioning rods are provided, and they correspond one-to-one, and the multiple rotating slots are arranged in a matrix.

[0013] Based on the above technical solutions, preferably, both ends of the plate along the width direction of the conveyor belt abut against the rotating block.

[0014] Based on the above technical solutions, preferably, the conveyor further includes an adjusting sleeve, which is detachably fixed on the second positioning rod and abuts against the inner wall of the conveyor belt.

[0015] Based on the above technical solutions, preferably, the top side of the conveyor belt is located below the bottom side of the feed inlet; the crusher also includes a connecting plate, which is fixedly disposed between the crushing box and the machine body. The top side of the connecting plate near the crushing box is flush with the bottom side of the feed inlet, and the top side of the connecting plate near the conveyor belt is flush with the top side of the conveyor belt. The top side of the connecting plate is provided with multiple protrusions.

[0016] The wind turbine blade recycling method of the present invention has the following advantages over the prior art: 1. By setting a buffer groove on the blade tip and limiting the position of the buffer groove, the circular saw blade will not contact two layers of blades at the same time. This not only improves the recovery efficiency of the wind turbine blades, but also protects the circular saw blade and extends its service life.

[0017] 2. By mixing the debris with concrete, not only can building bricks with better tensile properties be produced, but the wind turbine blades can also be fully utilized, allowing the solid waste from the wind turbine blades to be fully recycled.

[0018] 3. By setting a rotating block on the conveyor, not only can the plate be fixed and allowed to enter the crushing box smoothly, but the plate can also be limited to avoid deviation during conveying or crushing, thereby improving the crushing effect of the plate. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional view of the blade tip in a method for recycling wind turbine blades according to the present invention.

[0021] Figure 2 This is a perspective view of the crusher used in a method for recycling wind turbine blades according to the present invention.

[0022] Figure 3 This is a cross-sectional view of the crusher in a method for recycling wind turbine blades according to the present invention.

[0023] Figure 4 This is a top view of the conveyor in a method for recycling wind turbine blades according to the present invention.

[0024] Figure 5 This is a cross-sectional view of the rotating block end abutting the plate end in a wind turbine blade recycling method of the present invention.

[0025] Figure 6 This is a cross-sectional view of the rotating block when the plate is located in the clamping groove in a method for recycling wind turbine blades according to the present invention.

[0026] Figure 7 This is a perspective view of the rotating block located above the conveyor belt in a method for recycling wind turbine blades according to the present invention.

[0027] Figure 8 This is a cross-sectional view of the rotating block when the plate abuts against the top side of the conveyor belt in a method for recycling wind turbine blades according to the present invention.

[0028] Figure 9 This is a cross-sectional view of the rotating block when the plate is abutted against the top side of the rotating block in a method for recycling wind turbine blades according to the present invention.

[0029] Figure 10 This is a cross-sectional view of the rotating block located below the conveyor belt in a method for recycling wind turbine blades according to the present invention.

[0030] Figure 11 This is a perspective view of the rotating block located below the conveyor belt in a method for recycling wind turbine blades according to the present invention.

[0031] Figure 12 This is a partial cross-sectional view of the connecting plate in a method for recycling wind turbine blades according to the present invention.

[0032] Figure 13 This is a side view of the crushing box and crushing roller in a method for recycling wind turbine blades according to the present invention.

[0033] The components are as follows: 101, buffer trough; 2, crushing box; 201, feed inlet; 202, discharge outlet; 3, crushing roller; 4, conveyor; 41, machine body; 42, drive roller; 43, conveyor belt; 44, rotating block; 45, first positioning rod; 46, second positioning rod; 47, adjusting sleeve; 401, rotating groove; 402, clamping groove; 5, connecting plate; 501, protruding rib. Detailed Implementation

[0034] The technical solutions of this invention will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0035] The wind turbine blade is formed by two arc-shaped plate structures that are fastened together, creating a blade structure with an internal cavity. The wind turbine blade includes a blade root, a main beam, and a blade tip. The blade root is the end of the wind turbine blade closest to the column, and it is roughly cylindrical. The blade tip is the end of the wind turbine blade furthest from the column, and it is flat. The main beam is located between the blade root and the blade tip, and its cross-section is roughly elliptical.

[0036] The sidewalls of the wind turbine blades are blades, which are made of composite materials such as glass fiber, carbon fiber, plastic and metal.

[0037] A method for recycling wind turbine blades according to the present invention includes the following steps: S1. Mark the cutting lines on the fan blades according to the required cutting specifications. Place the fan blades on the cutting table, ensuring the blade tips are parallel to the horizontal plane. The cutting lines on the blade tips should be symmetrical, so that the projections of the cutting lines on the top and bottom sides of the blade tips onto the horizontal plane coincide.

[0038] S2, multiple buffer grooves 101 are opened on the cutting line on the blade tip. The multiple buffer grooves 101 are not continuous and are spaced apart from each other. The projections of the buffer grooves 101 located on the bottom side of the blade tip and the buffer grooves 101 located on the top side of the blade tip on the horizontal plane are alternately arranged. That is, the projections of the multiple buffer grooves 101 on the horizontal plane are continuous, and the projections of the multiple buffer grooves 101 on the horizontal plane coincide with the projections of the cutting line on the blade tip on the horizontal plane.

[0039] S3, move the circular saw blade along the cutting line to cut the wind turbine blade into multiple plates; because the cross-section of the cavity at the blade root and main beam is larger, when the circular saw blade cuts the blade root and main beam, it only contacts the blade plate at the cutting position, while the cross-section of the cavity at the blade tip is smaller, such as... Figure 1 As shown, when the circular saw blade cuts the blade tip from top to bottom or from left to right, although the circular saw blade will pass through the entire blade tip, it will only contact one layer of blade. This avoids the circular saw blade from contacting another layer of blade after penetrating one layer. This not only improves the cutting efficiency of the blade, but also protects the circular saw blade and extends its service life.

[0040] S4 involves repeatedly crushing the sheet metal using a crusher, and then screening the crushed sheet metal using a screening machine to obtain blade fragments that meet the required specifications. Typically, the crusher needs to crush the sheet metal three times, with each stage of the process breaking the sheet metal to the required specifications. The crusher used in each stage has a different specification.

[0041] S5 involves mixing blade fragments with concrete and preparing building bricks. The glass fibers and composite materials within the blade fragments enhance the tensile strength of the building bricks to adapt to different operating conditions.

[0042] The finished blade fragments are in powder form, preferably with a mesh size of 200-400, so as to be able to mix thoroughly with concrete. The aspect ratio of the blade fragments is preferably not less than 10:1, so as to improve the adhesion between concrete and blade fragments and the axial tensile strength of building bricks.

[0043] Metal particles may also be present in the blade debris. The density of metal particles is relatively high, and the coefficient of thermal expansion of metal particles does not match that of concrete. When the two are mixed, not only will the building bricks be heavy, but they will also be prone to cracking in high-temperature environments. Therefore, in step S4, after the blade debris is obtained, an electrostatic separator can be used to remove the metal particles from the blade debris.

[0044] In existing technologies, jaw crushers with upward-opening jaws are typically used to crush plates in a vertical direction. During the crushing process, the plates fall due to gravity, which reduces the crushing efficiency of the crusher. This application also provides a crusher to solve this problem.

[0045] like Figure 2 and Figure 3 As shown, the crusher includes a crushing box 2, two crushing rollers 3, a conveyor 4, and a connecting plate 5. The crushing box 2 has a feed inlet 201 and a discharge outlet 202 on its periphery. The crushing rollers 3 are rotatably arranged inside the crushing box 2. The two crushing rollers 3 are arranged parallel to each other in the vertical direction and spaced apart. The conveyor 4 is arranged on one side of the crushing box 2 and corresponds to the position of the feed inlet 201. The connecting plate 5 is fixedly arranged between the crushing box 2 and the conveyor 4 to fill the gap between the crushing box 2 and the conveyor 4 and prevent the plate from falling off during transportation.

[0046] like Figure 3 As shown, after the cut plate is placed on the conveyor 4, the conveyor 4 drives the plate to move horizontally to the left, feeding the plate into the feed inlet 201, so that the plate is crushed by the two crushing rollers 3, and the crushed blade fragments are discharged through the discharge outlet 202 on the left.

[0047] like Figure 13 As shown, one crushing roller 3 is connected to the output end of the motor via a sprocket, and the two crushing rollers 3 are connected by gears. When the motor is started, it drives the two crushing rollers 3 to rotate synchronously in opposite directions. Both crushing rollers 3 are equipped with crushing teeth, which squeeze the plate material, thereby crushing the plate material.

[0048] When the crushing teeth compress the sheet metal, the sheet metal is subjected to complex forces and may warp in various directions, potentially damaging equipment and operators. To address this issue, this application proposes two improvements. The first improvement is as follows: Figure 3 As shown, a cone is installed at the feed inlet 201 to reduce the range of motion of the sheet metal; the second improvement is as follows. Figures 4-11 As shown, the conveyor 4 has been improved to enable the conveyor 4 to limit and fix the plate.

[0049] Specifically, the conveyor 4 includes a body 41, two drive rollers 42, a conveyor belt 43, a rotating block 44, a first positioning rod 45, and a second positioning rod 46, as shown below. Figure 4 As shown, the drive roller 42 is rotatably mounted on the machine body 41. The two drive rollers 42 are spaced apart in the horizontal direction. The conveyor belt 43 is sleeved on the two drive rollers 42. When the reducer drives the drive roller 42 to rotate, the conveyor belt 43 can be driven to perform transmission by the rolling cooperation between the conveyor belt 43 and the drive roller 42, so as to realize the conveying of materials on the conveyor belt 43.

[0050] A rotating groove 401 is provided on the conveyor belt 43, and a rotating block 44 is rotatably disposed within the rotating groove 401. A first positioning rod 45 is fixedly disposed on the rotating block 44. Figure 5As shown, when the conveyor belt 43 drives the rotating block 44 to move to the position above the conveyor belt 43, the weight on the lower right side of the rotating block 44 is greater, causing the rotating block 44 to rotate to the position where the first positioning rod 45 abuts against the inner side of the conveyor belt 43. At this time, the rotating block 44 and the top side of the conveyor belt 43 form a clamping groove 402, as shown. Figure 4 and Figure 6 As shown, when the plate is placed on the conveyor belt 43, the end of the plate away from the crushing box 2 is inserted into the clamping groove 402 and fixed by the rotating block 44 and the conveyor belt 43, thereby preventing the plate from fluctuating when it comes into contact with the crushing roller 3 and improving the safety of the plate during the crushing process.

[0051] like Figure 6 As shown, the height of the clamping groove 402 gradually decreases in the direction away from the crushing box 2. Preferably, the side wall of the rotating block 44 is arc-shaped, so that plates of different thicknesses can be clamped and fixed, thereby improving the adaptability of the clamping effect of the rotating block 44.

[0052] To improve the clamping stability of the rotating block 44 on the plate, it is preferable to provide multiple rotating slots 401, rotating blocks 44, first positioning rods 45 and second positioning rods 46, so that multiple rotating slots 401, multiple rotating blocks 44, multiple first positioning rods 45 and multiple second positioning rods 46 correspond one-to-one, and multiple rotating slots 401 are arranged in a matrix.

[0053] like Figure 5 As shown, the upper end of the rotating block 44 is preferably pointed. When conveying a plate with a large thickness, the plate can also be fixed by the abutment between the upper end of the rotating block 44 and the end of the plate.

[0054] like Figure 8 As shown, when the plate is placed on the top side of the rotating block 44, the rotating block 44 is rotated under pressure, causing the first positioning rod 45 to separate from the conveyor belt 43. At this time, the top side of the rotating block 44 is not located above the top side of the conveyor belt 43, so that the plate can be pressed against the conveyor belt 43.

[0055] like Figure 10 As shown, the second positioning rod 46 is fixedly mounted on the rotating block 44. When the conveyor belt 43 drives the rotating block 44 to move to the position below the conveyor belt 43, the rotating block 44 rotates under gravity, causing the second positioning rod 46 to abut against the inner wall of the conveyor belt 43. At this time, the rotating block 44 does not extend out of the bottom side of the conveyor belt 43, thereby avoiding interference between the rotating block 44 and other components.

[0056] When the second positioning rod 46 abuts against the inner wall of the conveyor belt 43, it is preferable that the side wall of the rotating block 44 is flush with the outer side of the conveyor belt 43, such as... Figure 8 As shown, when the plate is placed on the rotating block 44, the second positioning rod 46 is positioned to abut against the conveyor belt 43.

[0057] When conveying thinner sheets, the height of the sheet may be slightly lower than the midpoint between the two crushing rollers 3, resulting in a reduced crushing effect. Therefore, an adjusting sleeve 47 is also installed in the conveyor 4. Figure 9 As shown, the adjusting sleeve 47 is fixed on the second positioning rod 46. When the plate is placed on the rotating block 44, the rotating block 44 is pressed and rotated, so that the adjusting sleeve 47 abuts against the inner wall of the conveyor belt 43. At this time, the top side of the rotating block 44 is above the top side of the conveyor belt 43, so that the plate can be lifted a certain distance so that the height of the plate is aligned with the middle position of the two crushing rollers 3.

[0058] In order to adjust the distance between the plate and the conveyor belt 43, it is preferable to make the adjusting sleeve 47 detachably fixed to the second positioning rod 46. When conveying plates of different thicknesses, the adjusting sleeve 47 with different outer diameters can be replaced.

[0059] The rotating block 44 rotates on the conveyor belt 43. In order to avoid interference between the rotating block 44 and the drive roller 42, an annular groove should be opened on the drive roller 42 to avoid the rotating block 44, the first positioning rod 45, the second positioning rod 46 and the adjusting sleeve 47.

[0060] Both the second positioning rod 46 and the adjusting sleeve 47 can serve as counterweight structures for the rotating block 44, affecting the magnitude of the force experienced by the rotating block 44 when it rotates. Therefore, the second positioning rod 46 can also be detachably and fixedly connected to the rotating block 44 to adjust the force required for the rotating block 44 to rotate.

[0061] The end of the plate cut from the blade tip is provided with a buffer groove 101. After the plate is placed on the conveyor belt 43, the rotating block 44 is locked in the buffer groove 101, which can realize secondary positioning of the plate and improve the stability of the plate during conveying and crushing.

[0062] The cutting specifications of the sheet metal should take into account the spacing of the rotating blocks 44 on the conveyor belt 43, such as... Figure 4 Preferably, both ends of the plate along the width direction of the conveyor belt 43 are in contact with the rotating block 44, so that the rotating block 44 can fully limit the plate.

[0063] like Figure 3 and Figure 12 As shown, the top side of the conveyor belt 43 is located below the bottom side of the feed inlet 201. The connecting plate 5 is inclined. The top side of the connecting plate 5 near the crushing box 2 is flush with the bottom side of the feed inlet 201. The top side of the connecting plate 5 near the conveyor belt 43 is flush with the top side of the conveyor belt 43. The top side of the connecting plate 5 is provided with multiple protrusions 501.

[0064] After the plate is placed on the conveyor belt 43, the conveyor belt 43 drives the plate to move. When the end of the plate near the crushing box 2 moves to the connecting plate 5, the inclined design of the connecting plate 5 and the protrusion 501 will apply a force to the plate in the opposite direction of its movement. This allows the end of the connecting plate away from the crushing box 2 to be inserted into the clamping groove 402, or the end of the connecting plate away from the crushing box 2 to abut against the tip of the rotating block 44. This achieves automatic clamping of the plate by the rotating block 44, eliminating the need for manual adjustment of the plate position on the conveyor belt 43.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for recycling wind turbine blades, characterized in that, Includes the following steps: S1, mark cutting lines on the fan blades, place the fan blades on the cutting table, and make the blade tips of the fan blades parallel to the horizontal plane, wherein the projections of the cutting lines on the top side of the blade tip and the cutting lines on the bottom side of the blade tip on the horizontal plane coincide. S2, a plurality of buffer grooves (101) are formed on the cutting line on the blade tip, wherein two adjacent buffer grooves (101) are spaced apart, the projections of the plurality of buffer grooves (101) on the horizontal plane are continuously arranged, and the projections of the plurality of buffer grooves (101) on the horizontal plane coincide with the projections of the cutting line on the blade tip on the horizontal plane. S3, move the circular saw blade along the cutting line to cut the fan blade into multiple plates; S4, the plate is crushed and screened using a crusher and a screening machine to obtain blade fragments; S5, the blade fragments are mixed with concrete and then used to prepare building bricks.

2. The method for recycling wind turbine blades as described in claim 1, characterized in that: In step S4, after the blade fragments are obtained, an electrostatic separator is used to remove the metal particles from the blade fragments.

3. The method for recycling wind turbine blades as described in claim 2, characterized in that: The blade fragments are 200-400 mesh powder with an aspect ratio ≥10:

1.

4. The method for recycling wind turbine blades as described in claim 1, characterized in that: The crusher includes a crushing box (2), two crushing rollers (3) and a conveyor (4), wherein, The crushing box (2) has an inlet (201) and an outlet (202) opposite to each other on its periphery. The crushing roller (3) is rotatably disposed inside the crushing box (2), and the two crushing rollers (3) are parallel and spaced apart in the vertical direction; The conveyor (4) is located on one side of the crushing box (2) and corresponds to the position of the feed inlet (201).

5. The method for recycling wind turbine blades as described in claim 4, characterized in that: The conveyor (4) includes a body (41), two drive rollers (42) and a conveyor belt (43), wherein, The drive roller (42) is rotatably mounted on the machine body (41), and the two drive rollers (42) are spaced apart in the horizontal direction; The conveyor belt (43) is fitted onto the two drive rollers (42).

6. The method for recycling wind turbine blades as described in claim 5, characterized in that: The conveyor (4) further includes a rotating block (44), a first positioning rod (45), and a second positioning rod (46), wherein, The conveyor belt (43) is provided with a rotating groove (401), and the rotating block (44) is rotatably disposed in the rotating groove (401); The first positioning rod (45) and the second positioning rod (46) are both fixedly mounted on the rotating block (44); When the rotating block (44) is above the conveyor belt (43), the first positioning rod (45) abuts against the inner side of the conveyor belt (43), and the rotating block (44) and the top side of the conveyor belt (43) form a clamping groove (402), and the upper end of the rotating block (44) is pointed, and the height of the clamping groove (402) gradually decreases in the direction away from the crushing box (2); when the rotating block (44) is below the conveyor belt (43), the second positioning rod (46) abuts against the inner side of the conveyor belt (43), and the rotating block (44) does not extend beyond the bottom side of the conveyor belt (43).

7. A method for recycling wind turbine blades as described in claim 6, characterized in that: Multiple rotating slots (401), rotating blocks (44), first positioning rods (45) and second positioning rods (46) are provided, and they correspond one-to-one. The multiple rotating slots (401) are arranged in a matrix.

8. The method for recycling wind turbine blades as described in claim 7, characterized in that: Both ends of the plate along the width direction of the conveyor belt (43) abut against the rotating block (44).

9. A method for recycling wind turbine blades as described in claim 7, characterized in that: The conveyor (4) also includes an adjusting sleeve (47), which is detachably fixed on the second positioning rod (46) and abuts against the inner wall of the conveyor belt (43).

10. A method for recycling wind turbine blades as described in claim 6, characterized in that: The top side of the conveyor belt (43) is located below the bottom side of the feed inlet (201); The crusher also includes a connecting plate (5), which is fixedly disposed between the crushing box (2) and the machine body (41). The top side of the connecting plate (5) near the crushing box (2) is flush with the bottom side inside the feed inlet (201). The top side of the connecting plate (5) near the conveyor belt (43) is flush with the top side of the conveyor belt (43). The top side of the connecting plate (5) is provided with multiple protrusions (501).

Images