A crushing device for resource utilization of decommissioned wind power blades

Abstract

This utility model discloses a crushing device for the resource utilization of decommissioned wind turbine blades, comprising a support frame, a dual-shaft crushing assembly, a feed bin, and a discharge bin. The crushing bin is mounted on the support frame, with the feed bin and discharge bin located at the upper and lower openings, respectively. The crushing device also includes a pressing assembly, which comprises a pressing rod support, a pushing cylinder, and a pressing plate. The pressing rod support is fixed to the upper inner side of the feed bin, the pushing cylinder is mounted on the pressing rod support, and the pressing plate is connected to the lower part of the pressing rod support. This utility model employs a dual-shaft crushing device and a multi-tearing toothed crushing disc. Furthermore, the tearing teeth are arranged spirally on the crushing disc, effectively reducing the load on the cutter shaft. During the crushing operation, the pressing assembly presses the blades in the feed bin, ensuring they enter the crushing disc quickly and smoothly, and preventing them from falling outside the crushing equipment.

Description

Technical Field

[0001] This utility model relates to the field of recycling technology for decommissioned wind turbine blades, specifically a crushing device for the resource utilization of decommissioned wind turbine blades. Background Technology

[0002] The resource utilization of retired wind turbine blades is a crucial step in achieving a green circular economy. Through processes such as mechanical crushing and pyrolysis, the glass fiber, carbon fiber, and resin matrix in the blades can be separated and transformed. The glass fiber recovery rate can reach over 90%, and the recycled fibers can be used to manufacture high-value products such as building templates and automotive parts. Furthermore, complete resource utilization of the blades can reduce landfill volume by 90%, and the processing of a single wind turbine blade can achieve a carbon emission reduction of over 20 tons. This approach offers significant economic and environmental benefits.

[0003] Mechanical crushing is a crucial process in the resource utilization of decommissioned wind turbine blades. During the crushing process, because the blades are mainly composed of glass fiber / carbon fiber reinforced resin and contain balsa wood interlayers, they have extremely high tensile strength. This places high demands on the power of the shredder in the crushing equipment, and the cutter shaft is also subjected to heavy loads, which can easily cause wear on the crushing cutter head. In addition, decommissioned wind turbine blades are relatively large and are generally cut into smaller pieces before crushing. During the crushing process, these small pieces of blade are prone to breaking off outside the crushing equipment or causing feeding difficulties, resulting in reduced crushing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a crushing device for the resource utilization of decommissioned wind turbine blades, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides a crushing device for the resource utilization of decommissioned wind turbine blades, comprising a support frame, a dual-shaft crushing assembly, a feed bin, and a discharge bin; the dual-shaft crushing assembly includes a crushing box, a first crushing shaft, a second crushing shaft, several crushing discs, several spacer discs, a drive motor, and a reduction gear assembly; the crushing box is a cavity structure with openings at the top and bottom; the crushing box is mounted on the support frame, with a feed bin and a discharge bin respectively located at the top and bottom openings; an auxiliary plate is provided on the inner side wall of the crushing box along its length; the auxiliary plate is positioned opposite to the spacer discs on the first and second crushing shafts, and the auxiliary plate is in the shape of an isosceles trapezoid, with a groove on the side near the spacer disc that mates with the spacer disc, and a gap is provided between the groove and the spacer disc.

[0006] Furthermore, along the length of the crushing box, a first crushing shaft and a second crushing shaft are arranged in parallel. The two ends of the first crushing shaft and the second crushing shaft extend out of the crushing box and are connected to the drive motor and the reduction assembly. The crushing discs and spacer discs are arranged on the first crushing shaft and the second crushing shaft in a "crushing disc-spacer disc-crushing disc" pattern. The diameter of the spacer disc is smaller than that of the crushing disc. The crushing discs on the first crushing shaft and the second crushing shaft are arranged alternately. The distance between the first crushing shaft and the second crushing shaft is smaller than that of the crushing disc.

[0007] Furthermore, the grinding disc is provided with at least one tearing tooth, and the tearing teeth on several grinding discs are arranged alternately in a spiral shape.

[0008] Furthermore, the crushing device also includes a pressing assembly; the pressing assembly includes a pressing rod bracket, a pushing pressing cylinder, and a pressing plate; the pressing rod bracket is fixed to the upper part of the inner side of the feed hopper, the pushing pressing cylinder is set on the pressing rod bracket, and the pressing plate is connected to the lower part of the pressing rod bracket.

[0009] Furthermore, the push cylinder is a hydraulic cylinder.

[0010] Furthermore, the pressing assembly includes two slide rails, a slide block unit, and two connecting angle plates; the slide rails are installed on the inner walls of the feeding hopper on both sides of the pressing rod support, and the slide block unit cooperates with the slide rails; the slide block unit includes a multi-fold vertical plate and several slide blocks, the bottom of the multi-fold vertical plate is fixed to the pressing plate, the pushing cylinder is located between the multi-fold vertical plate and the inner wall of the feeding hopper, and connecting angle plates are provided at both ends of the multi-fold vertical plate, with the lower part of the connecting angle plates fixedly connected to the pressing plate.

[0011] Furthermore, at least one ultrasonic generator is provided on the pressure plate.

[0012] This utility model proposes a crushing device for the resource utilization of decommissioned wind turbine blades. It employs a dual-shaft crushing system and, considering the high tensile strength of decommissioned wind turbine blades, utilizes a multi-tear-tooth crushing disc. Furthermore, the tear-tooths are arranged spirally on the crushing disc, effectively reducing the load on the cutter shaft. A vertically movable pressing component is installed in the feed hopper to press the blades within the hopper during the crushing process, ensuring rapid and smooth entry into the crushing disc and preventing them from falling outside the crushing equipment. Simultaneously, an ultrasonic vibration device is installed on the pressing plate, transmitting vibration to the blades during the pressing process, further improving crushing efficiency. Additionally, this application provides a crushing disc with replaceable tear-tooths, allowing for convenient replacement of worn tear-tooths. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall scheme of one embodiment of the present utility model.

[0014] Figure 2This is an enlarged schematic diagram of a partial embodiment of the present invention.

[0015] Figure 3 This is an enlarged schematic diagram of the pressing assembly according to one embodiment of the present invention.

[0016] Figure 4 This is a magnified schematic diagram of the pressing assembly of one embodiment of the present invention from another angle.

[0017] Figure 5 This is a schematic diagram of the second embodiment of the pulverizing disc of this utility model.

[0018] Figure 6 This is a schematic diagram of the third embodiment of the pulverizing disc of this utility model.

[0019] Figure 7 This is a schematic diagram of the fourth embodiment of the pulverizing disc of this utility model. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] As attached Figure 1-5 As shown, the crushing device for the resource utilization of retired wind turbine blades involved in this utility model includes a support 1, a dual-shaft crushing assembly 2, a feeding bin 3, a discharging bin 4, and a pressing assembly 5.

[0022] The dual-shaft crushing assembly 2 includes a crushing box 21, a first crushing shaft 22, a second crushing shaft 23, several crushing discs 24, several spacer discs 26, a drive motor, and a reduction gear assembly 25.

[0023] The crushing chamber 21 is a cavity structure with openings at the top and bottom. Along its length, a first crushing shaft 22 and a second crushing shaft 23 are arranged in parallel. Both ends of the first crushing shaft 22 and the second crushing shaft 23 extend out of the crushing chamber 21 and are connected to a drive motor and a reduction gear assembly 25. The drive motor and reduction gear assembly 25 include a drive motor and a reducer, and are existing products. Their specific structure and connection structure with the first crushing shaft 22 and the second crushing shaft 23 are existing technologies in the field.

[0024] The crushing disc 24 and the spacer disc 26 are arranged on the first crushing shaft 22 and the second crushing shaft 23 in the pattern of "crushing disc 24-spacer disc 26-crushing disc 24". The diameter of the spacer disc 26 is smaller than that of the crushing disc 24. The thickness of the spacer disc 26 is slightly greater than that of the crushing disc 24.

[0025] The crushing discs 24 on the first crushing shaft 22 and the second crushing shaft 23 are arranged alternately. That is, the crushing disc 24 on the second crushing shaft 23 is opposite to the spacer disc 26 on the first crushing shaft 22. The distance between the first crushing shaft 22 and the second crushing shaft 23 is smaller than the diameter of the crushing disc 24.

[0026] Furthermore, an auxiliary plate 27 is provided on the inner side wall of the crushing box 21 along its length. The auxiliary plate 27 is positioned opposite to the spacer discs 26 on the first crushing shaft 22 and the second crushing shaft 23. The auxiliary plate 27 is in the shape of an isosceles trapezoid, and a groove that mates with the spacer disc 26 is provided on the side of the auxiliary plate 27 closest to the spacer disc 26, with a gap between the groove and the spacer disc 26. The thickness of the auxiliary plate 27 is equal to the thickness of the spacer disc 26.

[0027] At least one tearing tooth 241 is provided on the crushing disc 24. When the teeth 241 on the crushing disc 24 are arranged in a regular manner on the first crushing shaft 22 and the second crushing shaft 23, the tearing teeth 241 on the crushing disc 24 are arranged in an alternating spiral pattern.

[0028] Appendix Figure 2 The shredding disc 24 in the first embodiment of this application is provided with three tearing teeth 241. Figure 5 The pulverizing disc 24 in this embodiment is provided with multiple tearing teeth 241, which is selected in combination with different blade conditions (thickness, tensile strength, etc.). The crushing box 21 is mounted on the support 1, with a feed bin 3 and a discharge bin 4 at the upper and lower openings, respectively.

[0029] A pressing assembly 5 is installed inside the feeding hopper 3. The pressing assembly 5 includes a pressing rod bracket 51, a pushing pressing cylinder 52, and a pressing plate 53.

[0030] The pressure rod bracket 51 is fixed on the upper part of the inner side of the feed hopper 3. The push cylinder 52 is set on the pressure rod bracket 51. The lower part of the pressure rod bracket 51 is connected to the pressure plate 53, which can drive the pressure plate 53 to move up and down.

[0031] The push cylinder 52 is a hydraulic cylinder.

[0032] Furthermore, the pressing assembly 5 includes two slide rails 54, a slide block unit 55, and two connecting corner plates 56.

[0033] The slide rail 54 is installed on the inner wall of the feed hopper 3 on both sides of the pressure rod bracket 51, and the slide unit 55 cooperates with the slide rail 54. The slide unit 55 includes a multi-fold vertical plate 551 and several slides 552. The bottom of the multi-fold vertical plate 551 is fixed to the pressure plate 53, and the push cylinder 52 is located between the multi-fold vertical plate 551 and the inner wall of the feed hopper 3, which provides a certain degree of protection for the push cylinder 52. Connecting angle plates 56 are provided at both ends of the multi-fold vertical plate 551. The lower part of the connecting angle plate 56 is fixedly connected to the pressure plate 53.

[0034] The pressure plate 53 covers more than 60%-90% of the minimum cross-sectional area of ​​the feed hopper 3.

[0035] At least one ultrasonic generator 57 is provided on the pressure plate 53. The ultrasonic generator 57 is an existing product.

[0036] Attached Figure Figure 6 , 7 These are the third and fourth embodiments of the shredder of this utility model, featuring a replaceable tearing tooth design, and are attached. Figure 6 The tearing tooth 241 is detachably fixed to the crushing disc 24 by two bolts. Figure 7 The technical solution is for the appendix Figure 6 The optimized design incorporates a raised limiting block 242 on the pulverizing disc 24 at the connection of the tearing teeth 241 to achieve better impact resistance. A stepped bolt hole 2411 is provided on the tearing teeth 241, with the top of the bolt located within the stepped bolt hole 2411, reducing wear on the bolt during the tearing process.

[0037] As attached Figure 7 As shown, chamfers 2412 are provided on both sides of the end of the tearing tooth 241 to improve the tearing ability of the blade and have a certain self-sharpening ability.

[0038] It should be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A crushing device for the resource utilization of decommissioned wind turbine blades, characterized in that, The system includes a support frame, a dual-shaft crushing assembly, a feed hopper, and a discharge hopper. The dual-shaft crushing assembly includes a crushing box, a first crushing shaft, a second crushing shaft, several crushing discs, several spacer discs, a drive motor, and a reduction gear assembly. The crushing box is a cavity structure with openings at the top and bottom. The crushing box is mounted on the support frame, with a feed hopper and a discharge hopper located at the top and bottom openings, respectively. An auxiliary plate is provided on the inner side wall of the crushing box along its length. The auxiliary plate is positioned opposite to the spacer discs on the first and second crushing shafts. The auxiliary plate is in the shape of an isosceles trapezoid, and a groove that mates with the spacer disc is provided on the side of the auxiliary plate closest to the spacer disc, with a gap between the groove and the spacer disc.

2. The crushing device for the resource utilization of decommissioned wind turbine blades according to claim 1, characterized in that, Along the length of the crushing box, a first crushing shaft and a second crushing shaft are arranged in parallel. The two ends of the first crushing shaft and the second crushing shaft extend out of the crushing box and are connected to a drive motor and a reduction gear assembly. The crushing discs and spacer discs are arranged on the first crushing shaft and the second crushing shaft in a "crushing disc-spacer disc-crushing disc" pattern. The diameter of the spacer disc is smaller than that of the crushing disc. The crushing discs on the first crushing shaft and the second crushing shaft are arranged alternately. The distance between the first crushing shaft and the second crushing shaft is smaller than that of the crushing disc.

3. The crushing device for the resource utilization of decommissioned wind turbine blades according to claim 2, characterized in that, The grinding disc is provided with at least one tearing tooth, and the tearing teeth on several grinding discs are arranged alternately in a spiral shape.

4. The crushing device for the resource utilization of decommissioned wind turbine blades according to claim 1, characterized in that, The crushing device also includes a pressing assembly; the pressing assembly includes a pressing rod bracket, a pushing pressing cylinder, and a pressing plate; the pressing rod bracket is fixed to the upper part of the inner side of the feed hopper, the pushing pressing cylinder is set on the pressing rod bracket, and the pressing plate is connected to the lower part of the pressing rod bracket.

5. The crushing device for the resource utilization of decommissioned wind turbine blades according to claim 4, characterized in that, The push cylinder is a hydraulic cylinder.

6. The crushing device for the resource utilization of decommissioned wind turbine blades according to claim 4, characterized in that, The pressing assembly includes two slide rails, a slide block unit, and two connecting angle plates. The slide rails are installed on the inner walls of the feed hopper on both sides of the pressing rod support, and the slide block unit cooperates with the slide rails. The slide block unit includes a multi-fold vertical plate and several slide blocks. The bottom of the multi-fold vertical plate is fixed to the pressing plate, and the pushing cylinder is located between the multi-fold vertical plate and the inner wall of the feed hopper. Connecting angle plates are provided at both ends of the multi-fold vertical plate, and the lower part of the connecting angle plates is fixedly connected to the pressing plate.

7. The crushing device for the resource utilization of decommissioned wind turbine blades according to claim 6, characterized in that, At least one ultrasonic generator is provided on the pressure plate.

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