Multi-stage wind sorting device for recovering materials from wind turbine blades

Abstract

This utility model discloses a multi-stage wind power sorting device for recovering materials from wind turbine blades. It includes a sorting housing with a movably retractable screening frame on the lower side wall. The bottom of the sorting housing is connected to a discharge port. It also includes a secondary processing unit, which includes a screw conveyor housing connected to the discharge port. A discharge housing is located on one side of the screw conveyor housing, and a secondary sorting box is connected to the lower part of the discharge housing. A motor passes through the discharge housing, and screw feeding blades, arranged inside the screw conveyor housing, are fixed to the output shaft of the motor. This utility model belongs to the field of wind turbine blade recycling technology and effectively solves the problems of a single wind power sorting process, the tendency of crushed materials to agglomerate, affecting the sorting effect, and insufficient pretreatment affecting subsequent processing.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine blade recycling technology, specifically referring to a multi-stage wind-powered sorting device for recycled materials from wind turbine blades. Background Technology

[0002] Wind turbine blades are primarily composed of thermosetting composite materials such as glass fiber, carbon fiber, and epoxy resin, which are lightweight and high-strength, but difficult to decompose using traditional methods. Current technologies often use crushed blade material directly as filler, failing to effectively separate fibers and resins, resulting in low recycling value. Mechanical crushing and single-stage sorting are inefficient; traditional processes, involving only simple crushing and screening, cannot effectively separate materials with similar densities. Wind power sorting, based on differences in material density and shape, separates lightweight and heavy components through airflow, offering advantages such as low energy consumption and no chemical pollution.

[0003] In existing technologies, wind-powered sorting devices mostly adopt a fixed wind speed segmented design, which is difficult to adapt to changes in material characteristics, and single-stage sorting affects the material recovery effect.

[0004] Furthermore, existing crushers generally suffer from problems such as a single crushing process and poor particle uniformity. For example, thermosetting resins and fibers are tightly bound, making it difficult for traditional single-stage crushing to completely separate them. This results in the resin residue particles and fibers forming a mixture during subsequent wind separation, reducing the separation purity. Utility Model Content

[0005] The technical problem this invention aims to solve is that the wind-powered sorting process is too simple, the crushed material is prone to agglomeration, which affects the sorting effect, and the insufficient pretreatment affects subsequent processing.

[0006] The technical solution adopted by this utility model is as follows:

[0007] The multi-stage wind power sorting device for recovering materials from wind turbine blades proposed in this utility model includes a sorting box, a screening frame that can be movably pulled out from the lower part of the side wall of the sorting box, a discharge port connected to the bottom of the sorting box, and a secondary processing unit. The secondary processing unit includes a screw conveyor housing connected to the discharge port, a feeding housing on one side of the screw conveyor housing, a secondary sorting box connected to the lower part of the feeding housing, a motor passing through the feeding housing, and a screw feeding blade fixedly connected to the output shaft of the motor inside the screw conveyor housing.

[0008] Furthermore, a blower unit is connected to one side of the sorting box, an impurity separation cylinder is connected to the other side of the sorting box, a blower unit is connected to one side of the secondary sorting box, and a sorting and collecting casing is provided at the bottom of the secondary sorting box.

[0009] Furthermore, a support base is mounted on the upper part of the screw conveyor housing, an electrostatic treatment chamber is fixedly connected to the support base, an air pump is connected to the upper part of the support base, and an air outlet is provided at the lower part of the electrostatic treatment chamber.

[0010] Furthermore, the upper part of the sorting machine box is provided with an addition port, and the upper part of the addition port is connected to a pre-processing housing one and a pre-processing housing two, which are vertically connected.

[0011] Furthermore, two sets of crushing rollers are rotatably provided on the inner walls of both the pretreatment housing one and the treatment housing two, and the two sets of crushing rollers rotate in opposite directions and are driven by motor two, with the roller diameter of the upper set of crushing rollers being larger than that of the lower set of crushing rollers.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] 1. A two-stage processing unit is set up to improve the separation effect of materials through multi-stage air separation, and electrostatic treatment is adopted to solve the problem of incomplete separation in traditional sorting operations;

[0014] 2. Before performing air separation, a pretreatment stage is set up to crush the material in multiple stages to avoid the formation of a mixture of resin residue particles and fibers in the subsequent air separation, which would reduce the separation purity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the screw conveyor casing.

[0018] Figure 4 This is a schematic diagram of the electrostatic treatment cavity.

[0019] The components include: 1. Sorting machine casing; 11. Screening frame; 12. Discharge port; 2. Screw conveyor casing; 21. Feeding casing; 22. Secondary sorting box; 23. Motor 1; 24. Screw feed blades; 3. Fan unit 1; 31. Impurity separation cylinder; 32. Fan unit 2; 33. Sorting and collecting casing; 4. Support base; 41. Electrostatic treatment chamber; 42. Air pump; 43. Air outlet; 5. Addition port; 51. Pre-treatment casing 1; 52. Processing casing 2; 6. Crushing roller; 61. Motor 2. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0022] Example 1:

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, the multi-stage wind-powered sorting device for recovering materials from wind turbine blades proposed in this utility model includes a sorting box 1, a screening frame 11 that can be movably pulled out from the lower side wall of the sorting box 1, a discharge port 12 connected to the bottom of the sorting box 1, and a secondary processing unit. The secondary processing unit includes a screw conveyor housing 2 connected to the discharge port 12. A feeding housing 21 is provided on one side of the screw conveyor housing 2. A secondary sorting box 22 is connected to the lower part of the feeding housing 21. A motor 23 passes through the feeding housing 21. A screw feeding blade 24 disposed inside the screw conveyor housing 2 is fixed to the output shaft of the motor 23. A fan unit 3 is connected to one side of the sorting box 1, and an impurity separation cylinder 31 is connected to the other side of the sorting box 1. A fan unit 32 is connected to one side of the secondary sorting box 22, and a sorting and collecting housing 33 is provided at the bottom of the secondary sorting box 22.

[0024] In use, materials are processed sequentially in the sorting box 1 and the secondary sorting box 22, achieving multi-stage air separation and improving the thoroughness of material separation. The air force of the first fan unit 3 is greater than that of the second fan unit 32 to separate materials with different characteristics. The materials are transferred and transported through the screw conveyor shell 2. When the first motor 23 is working, it drives the screw feeding blades 24 to rotate, realizing the screw conveying of materials and avoiding material blockage that affects processing efficiency. The discharge port 12 can be pulled out for easy cleaning of the filtered materials. Air-separated impurities are discharged from the impurity separation cylinder 31.

[0025] like Figure 4 As shown, a support base 4 is mounted on the upper part of the screw conveyor housing 2, an electrostatic treatment chamber 41 is fixedly connected to the support base 4, an air pump 42 is connected to the upper part of the support base 4, and an air outlet 43 is provided at the lower part of the electrostatic treatment chamber 41.

[0026] It should be noted that the support base 4 adopts a coaxial cylindrical electrode structure. A high DC voltage is applied to the inner electrode, while the outer electrode is grounded, forming a non-uniform electric field. Airflow generated by the air pump 42 is connected to the top of the electrostatic treatment chamber 41 and exits through the air outlet 43, acting on the material inside the screw conveyor housing 2. This assists in material dispersion and prevents fiber entanglement. The core logic of electrostatic treatment is to imbue different materials with differentiated charges, driving the charged materials to move, ultimately achieving spatial separation and improving the sorting effect.

[0027] Example 2:

[0028] like Figure 2 As shown, the upper part of the sorting machine box 1 is provided with an inlet 5, and the upper part of the inlet 5 is connected to a pre-processing housing 1 51 and a pre-processing housing 2 52, which are vertically connected; two sets of crushing rollers 6 are rotatably provided on the inner wall of both the pre-processing housing 1 51 and the pre-processing housing 2 52, and the two sets of crushing rollers 6 rotate in opposite directions and are driven by a motor 2 61, and the roller diameter of the upper set of crushing rollers 6 is smaller than that of the lower set of crushing rollers 6.

[0029] In practical use, the raw material is added from the second processing chamber 52 and crushed for the first time by the crushing roller 6. After the crushed raw material enters the first pre-processing chamber 51, it is crushed for the second time. Due to the increase in roller diameter and the same installation position of the crushing roller 6, the multi-stage crushing makes the material crushed more thoroughly and improves the efficiency of subsequent processing and sorting.

[0030] The above is the usage process of the multi-stage wind power sorting device for recovering materials from wind turbine blades.

[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

[0032] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A multi-stage wind power sorting device for recovering materials from wind turbine blades, comprising a sorting box (1), wherein a screening frame (11) is movably pulled out from the lower part of the side wall of the sorting box (1), and a discharge port (12) is connected to the bottom of the sorting box (1), characterized in that: It also includes a secondary processing unit, which includes a screw conveyor housing (2) connected to the discharge port (12). A discharge housing (21) is provided on one side of the screw conveyor housing (2). A secondary sorting box (22) is connected to the lower part of the discharge housing (21). A motor (23) runs through the discharge housing (21). A screw feeding blade (24) is fixedly connected to the output shaft of the motor (23) and is installed inside the screw conveyor housing (2).

2. The multi-stage wind power sorting device for recovering materials from wind turbine blades according to claim 1, characterized in that: The sorting box (1) is connected to a fan unit (3) on one side and to an impurity separation cylinder (31) on the other side. The secondary sorting box (22) is connected to a fan unit (32) on one side and to a sorting collection casing (33) at the bottom.

3. The multi-stage wind power sorting device for recovering materials from wind turbine blades according to claim 1, characterized in that: The upper part of the screw conveyor housing (2) is provided with a support base (4), and an electrostatic treatment chamber (41) is fixedly connected to the support base (4). An air pump (42) is connected to the upper part of the support base (4), and an air outlet (43) is provided at the lower part of the electrostatic treatment chamber (41).

4. The multi-stage wind power sorting device for recovering materials from wind turbine blades according to claim 1, characterized in that: The sorting machine box (1) is provided with an addition port (5) at the top. The addition port (5) is connected to a pre-processing housing one (51) and a pre-processing housing two (52) at the top. The pre-processing housing one (51) and the pre-processing housing two (52) are vertically connected.

5. The multi-stage wind power sorting device for recovering materials from wind turbine blades according to claim 4, characterized in that: Two sets of crushing rollers (6) are rotatably mounted on the inner walls of the pretreatment housing 1 (51) and the treatment housing 2 (52), and the two sets of crushing rollers (6) rotate in opposite directions and are driven by motor 2 (61). The roller diameter of the upper set of crushing rollers (6) is larger than that of the lower set of crushing rollers (6).

Images