Fan blade crushing system

Abstract

The invention discloses a fan blade crushing system which comprises a first shredding machine, a second shredding machine, a hammer crusher and a conveying assembly, and the discharging granularity of the first shredding machine, the discharging granularity of the second shredding machine and the discharging granularity of the hammer crusher are sequentially reduced. The conveying assembly is used for conveying the leaf fragments to the first shredding machine, conveying the leaf fragments shredded by the first shredding machine to the second shredding machine and conveying the leaf fragments shredded by the second shredding machine to the hammer crusher. The fan blade crushing system provided by the invention has the advantages that the retired fan blade is crushed into fine particles for secondary utilization, and the resource utilization rate and the high-value utilization rate of the retired fan blade are high.

Description

Technical Field

[0001] The present invention relates to the technical field of fan blade processing equipment, and particularly relates to a fan blade crushing system. Background Art

[0002] Fan blades are large composite structures, mainly including fiberglass (reinforcement material), epoxy resin (matrix), core material (rigidity), etc. Since composites are irreversible during the chemical cross-linking process, the product cannot be remelted, reshaped or naturally degraded after curing and forming, making it difficult to recycle. Moreover, the blade structure is relatively complex, with different components made of different materials, and depending on the manufacturer and application scenario, the structures and materials involved in the blades are also different, resulting in high difficulty in recycling and reuse.

[0003] In related technologies, landfilling and incineration of retired fan blades are the most traditional and commonly used treatment methods. However, due to the difficulty of degrading their materials, landfilling not only occupies land resources but also releases harmful substances, seriously polluting the soil and water resources, thus affecting food and drinking water safety. During the incineration process, a large amount of greenhouse gases and toxic gases are emitted, and the generated incineration residues are difficult to handle, causing serious pollution to the air and land. Landfilling and incineration treatments not only pollute the environment but also cause serious waste of resources. Therefore, how to resourcefully and highly value-added utilize retired fan blades has become a research hotspot highly concerned by the country. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the related technologies to some extent.

[0005] Therefore, an embodiment of the present invention provides a fan blade crushing system, which has the advantages of crushing retired fan blades into small particles for easy secondary utilization and high resource utilization rate and high value-added utilization rate of retired fan blades.

[0006] The fan blade crushing system according to the embodiment of the present invention includes a first shredder, a second shredder, a hammer mill, and a conveying assembly. The discharge particle size of the first shredder, the discharge particle size of the second shredder, and the discharge particle size of the hammer mill decrease in sequence. The conveying assembly is used to convey blade fragments to the first shredder, convey the blade fragments shredded by the first shredder to the second shredder, and convey the blade fragments shredded by the second shredder to the hammer mill.

[0007] According to the fan blade crushing system of the embodiments of the present invention, the conveying assembly conveys blade fragments smaller than a set size into the first shredder for preliminary shredding, and then conveys the preliminarily shredded fragments into the second shredder through the conveying assembly for further shredding to obtain fragments with a smaller particle size. Finally, the fragments after secondary treatment are conveyed into a hammer mill through the conveying assembly to finally obtain fragments suitable for secondary utilization, facilitating the use of the fragments at this particle size as additives for building materials or other materials to enhance the material properties. Thus, the resource utilization and high-value utilization rate of retired fan blades are effectively improved.

[0008] In some embodiments, the discharge particle size of the first shredder is less than or equal to 100 mm, the discharge particle size of the second shredder is less than or equal to 50 mm, and the discharge particle size of the hammer crusher is less than or equal to 5 mesh.

[0009] In some embodiments, both the first shredder and the second shredder include a six-stage motor, a hard tooth surface reducer, and a shredding body. The motor shaft of the six-stage motor is coaxially connected to the input shaft of the hard tooth surface reducer, and the output shaft of the hard tooth surface reducer is coaxially connected to the input shaft of the shredding body.

[0010] In some embodiments, both the first shredder and the second shredder are double-shaft shear type shredders.

[0011] In some embodiments, the hammer mill is a single-rotor hammer crusher.

[0012] In some embodiments, the conveying assembly includes:

[0013] A first belt conveyor, which is connected to the feed inlet of the first shredder;

[0014] A second belt conveyor, which is connected between the discharge outlet of the first shredder and the feed inlet of the second shredder;

[0015] A third belt conveyor, which is connected between the discharge outlet of the second shredder and the feed inlet of the hammer mill.

[0016] In some embodiments, the second belt conveyor extends upwardly from the first shredder towards the second shredder, and the third belt conveyor extends upwardly from the second shredder towards the hammer mill.

[0017] In some embodiments, the fan blade crushing system further includes a dust removal device. The air inlet of the dust removal device has at least three inlets, and three of the inlets respectively extend to the feed inlet of each of the first shredder, the second shredder, and the hammer mill.

[0018] In some embodiments, the dust removal device includes a pulse dust collector.

[0019] In some embodiments, the fan blade crushing system further includes:

[0020] a camera for monitoring the working conditions of the first shredder, the second shredder, the hammer crusher, and the conveying assembly;

[0021] a control system electrically connected to each of the camera, the first shredder, the second shredder, the hammer crusher, and the conveying assembly. Description of the Drawings

[0022] Figure 1 is a schematic diagram of a fan blade crushing system according to an embodiment of the present invention.

[0023] Figure 2 is a schematic diagram of the first shredder and the second shredder in the fan blade crushing system according to an embodiment of the present invention.

[0024] Figure 3 is an operation process diagram of the fan blade crushing system according to an embodiment of the present invention.

[0025] Reference Signs:

[0026] 1, first shredder; 2, second shredder; 3, hammer mill; 4, first belt conveyor; 5, second belt conveyor; 6, third belt conveyor. Detailed Embodiments

[0027] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0028] The following will be combined with Figures 1-3 Describe a fan blade crushing system according to an embodiment of the present invention.

[0029] The fan blade crushing system according to the embodiment of the present invention includes a first shredder 1, a second shredder 2, a hammer mill 3, and a conveying assembly. The particle size of the discharged material of the first shredder 1, the particle size of the discharged material of the second shredder 2, and the particle size of the discharged material of the hammer mill 3 decrease in sequence. The conveying assembly is used to convey blade fragments to the first shredder 1, convey the blade fragments shredded by the first shredder 1 to the second shredder 2, and convey the blade fragments shredded by the second shredder 2 to the hammer mill 3.

[0030] According to the fan blade crushing system of the embodiments of the present invention, the conveying component conveys the blade fragments smaller than the set size into the first shredder 1 for preliminary shredding, and then conveys the preliminarily shredded fragments into the second shredder 2 through the conveying component for further shredding to obtain smaller-sized fragments. Finally, the fragments that have undergone secondary treatment are conveyed into the hammer mill 3 through the conveying component to finally obtain fragments that meet the requirements for secondary utilization, which are convenient for the fragments of this particle size to be used as additives for building materials or other materials to enhance the material properties. Thus, the resource utilization rate and high-value utilization rate of retired fan blades are effectively improved.

[0031] It should be noted that the first shredder 1 and the second shredder 2 are set for secondary tearing of the fan blades. On the one hand, it ensures that the fragments of the fan blades sent to the first shredder 1 can have a relatively large size, and also reduces the cutting cost of cutting the fan blades into fragments of the above size. On the other hand, it also ensures that the particle size of the fragments finally conveyed to the hammer mill 3 is smaller, so that the hammer mill 3 can more efficiently crush the fragments into fragments that meet the usage requirements. Among them, the size of the fragments of the fan blades sent to the first shredder 1 is less than or equal to 1000 mm in length × 1000 mm in width × 80 mm in thickness.

[0032] In some embodiments, the discharge particle size of the first shredder 1 is less than or equal to 100 mm, the discharge particle size of the second shredder 2 is less than or equal to 50 mm, and the discharge particle size of the hammer mill 3 is less than or equal to 5 mesh.

[0033] That is, the maximum size of the discharge port of the first shredder 1 is approximately 100 mm, the maximum size of the discharge port of the second shredder 2 is approximately 50 mm, and the diameter of the sieve holes of the arc-shaped sieve in the hammer mill 3 is approximately 5 mesh. The above settings effectively ensure that the first shredder 1, the second shredder 2, and the hammer mill 3 generally have consistent working efficiencies, so as to ensure that the three can work continuously without interruption, and avoid the accumulation of some materials in one of the machines, which affects the working efficiency of other machines.

[0034] Specifically, the cut fan blades are fed into the first shredder 1 for primary crushing, and are crushed into long-strip primary crushed materials with a length and width less than or equal to 100 mm. Then, the primary crushed materials are conveyed to the second shredder 2 through the conveying component and shredded into long strips with a length and width less than or equal to 50 mm. Finally, under the control of the conveying component, the hammer mill 3 is fed quantitatively, and the hammer mill 3 crushes the materials into a state within 5 mesh. Among them, it is preferably set that the crushing capacities of the first shredder 1, the second shredder 2, and the hammer mill 3 are generally equal and greater than or equal to 1 t / h.

[0035] In some embodiments, both the first shredder 1 and the second shredder 2 include a six-stage motor, a hard tooth surface speed reducer, and a shredding body. The motor shaft of the six-stage motor is coaxially connected to the input shaft of the hard tooth surface speed reducer, and the output shaft of the hard tooth surface speed reducer is coaxially connected to the input shaft of the shredding body.

[0036] The six-stage motor has a smaller rotational speed and a larger torque. Combined with the hard tooth surface speed reducer, it further reduces the speed and increases the torque to meet the crushing requirements for high-strength fan blades. At the same time, it also makes the first shredder 1 and the second shredder 2 more adaptable to environments with large loads and harsh working conditions, with high service life and high reliability.

[0037] Specifically, two rotating shafts are provided on the shredding body. Each of the two rotating shafts is coaxially connected to a gear, and the two gears mesh with each other so that the two rotating shafts rotate in opposite directions. One of the rotating shafts is the input shaft of the shredding body connected to the output shaft of the hard tooth surface speed reducer.

[0038] In some embodiments, as Figure 3 shown, both the first shredder 1 and the second shredder 2 are double-shaft shear shredders.

[0039] This setting makes the above-mentioned shredders more stable and reliable when processing the fragments of fan blades, with low noise, capable of continuous operation for a long time, and having a high shearing and tearing efficiency for the fragments of fan blades.

[0040] Among them, when the fragments of the fan blade enter the double-shaft shear shredder, they will pass through the space between the two rotating shafts and be impacted and sheared by the high-speed rotating blades to be torn into small pieces. Specifically, staggered blades are installed on both of the two knife shafts. During the opposite rotation of the two knife shafts, the crushing is achieved through the shearing of the blade edges and the tearing of the knife teeth. The main shearing method is the shearing action of the adjacent moving blade edges, and the secondary shearing method is the tearing action of the moving blade teeth.

[0041] In some embodiments, the hammer mill 3 is a single-rotor hammer crusher. Its working principle is mainly based on the impact and shear of the high-speed rotating hammer heads on the fragments of the fan blades. Specifically, the fragments are fed from the upper hopper and are broken by the impact force of the high-speed rotating hammer knives in a suspended state. The fine particles smaller than the diameter of the sieve holes of the arc-shaped sieve surface are gradually screened by the sieve surface and fall into the discharge port. The particles larger than the sieve hole diameter, after being impacted by the hammer knives, scatter at high speed due to the inertial force, some of them collide into small pieces, the small ones are gradually screened, the slightly larger particles bounce up again and are impacted by the lower row of high-speed rotating hammer knives, gradually making the large particles smaller. The particles that are not impacted will also encounter the impact of the rear row of hammer knives. This process is repeated until the large pieces of material are broken into fine particles and fall through the sieve holes into the discharge port. In addition, the fragments are also subjected to extrusion and grinding effects in the machine.

[0042] The single-rotor hammer crusher has a relatively high crushing degree and can quickly break large materials into fine particles. It impacts and shears the materials through the high-speed rotating hammers, and the energy consumption is relatively low.

[0043] In some embodiments, the conveying assembly includes a first belt conveyor 4, a second belt conveyor 5, and a third belt conveyor 6. The first belt conveyor 4 is connected to the feeding port of the first shredder 1, and the second belt conveyor 5 is connected between the discharging port of the first shredder 1 and the feeding port of the second shredder 2, and the second belt conveyor 5 is connected between the discharging port of the second shredder 2 and the feeding port of the hammer crusher 3.

[0044] The arrangement of the first belt conveyor 4 to the third belt conveyor 6 makes the shearing and crushing of the fan blades more continuous. By controlling the conveying speeds of the first belt conveyor 4 to the second belt conveyor 5, the automated crushing operation of the fan blades can be completed, and thus the demand for human labor is smaller, and the crushing cost of the fan blade crushing system is lower.

[0045] Specifically, as Figure 1 shown, the second belt conveyor 5 extends upwardly and obliquely from the first shredder 1 towards the second shredder 2, and the third belt conveyor 6 extends upwardly and obliquely from the second shredder 2 towards the hammer crusher 3.

[0046] At this time, the first shredder 1, the second shredder 2, and the hammer crusher 3 can all be installed at the same height, that is, all installed on the horizontal ground, so as to reduce the installation and fixing costs of the three.

[0047] It should be noted that, as Figure 1 shown, the first belt conveyor 4 also extends upwardly and obliquely in the direction towards the first shredder 1, thereby effectively reducing the difficulty of conveying the fragments of the fan blades to the first shredder 1.

[0048] In some embodiments, the fan blade crushing system further includes a dust removal device. The air inlet of the dust removal device has at least three, and three of the air inlets respectively extend to the feeding port of each of the first shredder 1, the second shredder 2, and the hammer crusher 3.

[0049] The setting of the dust removal device effectively reduces the dust pollution generated during the crushing of the fan blades, which conforms to the current green and environmental protection production concept.

[0050] In some embodiments, the dust removal device includes a pulse dust collector.

[0051] The pulse dust collector can more effectively remove the dust particles in the air, especially the fine dust generated during the production process. It can not only effectively improve the working environment, but also has little interference with the first shredder 1, the second shredder 2, and the hammer crusher 3, and the three have a high crushing efficiency for the fan blades.

[0052] In some embodiments, the fan blade crushing system further includes a camera and a control system. The camera is used to monitor the working conditions of the first shredder 1, the second shredder 2, the hammer mill 3, and the conveying assembly; the control system is electrically connected to each of the camera, the first shredder 1, the second shredder 2, the hammer mill 3, and the conveying assembly.

[0053] The camera can observe the traveling situation from multiple angles. It can change with the change of the angle of the working equipment and can always observe the working position. The controller can realize the overall linkage control of the fan blade crushing system, is designed with a built-in protection function, automatically reverses when overloaded, and simultaneously monitors the temperature of the high-speed bearings in real time and has functions such as abnormal alarm.

[0054] It should be noted that the camera should be protected by measures such as a dust cover. The resolution of all cameras should clearly observe the surrounding environment. The controller can be a touch screen, making parameter adjustment convenient. Or, the controller has an independent operation cabinet and uses an operation method of touch screen + buttons.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0056] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0059] In the present invention, the terms "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0060] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present invention.

Claims

1. A fan blade crushing system, characterized in that: include: A first shredder, a second shredder and a hammer mill, wherein the particle size of the first shredder, the particle size of the second shredder and the particle size of the hammer mill decrease in sequence; A conveying assembly is used to convey the blade fragments to the first shredder, convey the blade fragments shredded by the first shredder to the second shredder, and convey the blade fragments shredded by the second shredder to the hammer mill.

2. The fan blade crushing system according to claim 1, characterized in that: The discharge particle size of the first shredder is less than or equal to 100 mm, the discharge particle size of the second shredder is less than or equal to 50 mm, and the discharge particle size of the hammer crusher is less than or equal to 5 meshes.

3. The fan blade crushing system according to claim 1, characterized in that: The first shredder and the second shredder both include a six-stage motor, a hard-toothed surface reducer and a shredder body, the motor shaft of the six-stage motor is coaxially connected to the input shaft of the hard-toothed surface reducer, and the output shaft of the hard-toothed surface reducer is coaxially connected to the input shaft of the shredder body.

4. The fan blade crushing system according to claim 1, characterized in that: The first shredder and the second shredder are both double-shaft shearing shredders.

5. The fan blade crushing system according to claim 1, characterized in that: The hammer mill is a single-rotor hammer crusher.

6. The fan blade crushing system according to claim 1, characterized in that: The conveying assembly comprises: A first belt conveyor, wherein the first belt conveyor is connected to a feed port of the first shredder; a second belt conveyor, wherein the second belt conveyor is connected between a discharge port of the first shredder and a feed port of the second shredder; The third belt conveyor, the second belt conveyor is connected between the discharge port of the second shredder and the feed port of the hammer mill.

7. The fan blade crushing system according to claim 6, characterized in that: The second belt conveyor extends upwardly and obliquely from the first shredder toward the second shredder, and the third belt conveyor extends upwardly and obliquely from the second shredder toward the hammer crusher.

8. The fan blade crushing system according to claim 1, characterized in that: The fan blade crushing system also includes a dust removal device, which has at least three air inlets, wherein the three air inlets extend to the feed inlet of each of the first shredder, the second shredder and the hammer mill respectively.

9. The fan blade crushing system according to claim 8, characterized in that: Dust removal equipment includes pulse dust collectors.

10. The fan blade crushing system according to any one of claims 1 to 9, characterized in that: The fan blade crushing system also includes: A camera, wherein the camera is used to monitor the working conditions of the first shredder, the second shredder, the hammer crusher and the conveying assembly; A control system is electrically connected to each of the camera, the first shredder, the second shredder, the hammer crusher, and the conveying assembly.

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