Multi-stage crushing device for fan blades

Abstract

The invention provides a fan blade multi-stage crushing device which comprises a first-stage belt conveyor, a first-stage shredding machine, a second-stage belt conveyor, a second-stage shredding machine, a third-stage belt conveyor and a crusher which are sequentially arranged, and the first-stage belt conveyor, the second-stage belt conveyor and the third-stage belt conveyor are all obliquely arranged; the shredding machine comprises a feeding hopper, a shredding bin and a discharging hopper, two cutting rollers meshed with each other are connected into the shredding bin, the discharging granularity of the second-stage shredding machine is smaller than that of the first-stage shredding machine, and the smashing machine is arranged below the discharging end of the third-stage belt conveyor. By arranging the multi-stage belt conveyors and the shredding machine, the fineness of particles crushed by the fan blades can be improved, the subsequent separation operation of light materials and heavy materials is facilitated, the working efficiency is improved, and the crusher cannot be damaged.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade recycling and processing technology, and in particular to a multi-stage crushing device for wind turbine blades. Background Technology

[0002] The lifespan of wind turbine generators is generally 20-25 years. Abandoned wind turbine generators can be recycled and reused. Recyclable parts include the base, tower, generator components, and turbine blades. However, when recycling turbine blades, due to their large size, they need to be crushed. Typically, they are first sheared into blocks or flakes, and then crushed using a shredder. However, it is often difficult to crush them into fine particles, making subsequent separation of light and heavy materials difficult. Even extending the crushing time can easily damage the shredder and results in low efficiency. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art. To this end, embodiments of the present invention provide a multi-stage crushing device for wind turbine blades, which can improve the fineness of the crushed particles and increase working efficiency.

[0004] This invention provides a multi-stage crushing device for wind turbine blades, comprising: a belt conveyor, a shredder, and a crusher. The belt conveyor has a feed end and a discharge end, with the discharge end of the belt conveyor being higher than the feed end of the belt conveyor. The belt conveyor includes a primary belt conveyor, a secondary belt conveyor, and a tertiary belt conveyor.

[0005] The shredder includes a feed hopper, a shredding chamber, and a discharge hopper. The shredding chamber has a feed inlet and a discharge outlet. Two interlocking cutting rollers are connected inside the shredding chamber. The feed hopper is located above the shredding chamber and connected to the feed inlet of the shredding chamber. The discharge hopper is located below the shredding chamber and connected to the discharge outlet of the shredding chamber. The shredder includes a primary shredder and a secondary shredder. The primary shredder is located between the primary belt conveyor and the secondary belt conveyor. The discharge end of the primary belt conveyor is located above the feed hopper of the primary shredder, and the feed end of the secondary belt conveyor is located below the discharge hopper of the primary shredder. The secondary shredder is located between the secondary belt conveyor and the tertiary belt conveyor. The discharge end of the secondary belt conveyor is located above the feed hopper of the secondary shredder, and the feed end of the tertiary belt conveyor is located below the discharge hopper of the secondary shredder. The discharge particle size of the secondary shredder is smaller than that of the primary shredder.

[0006] The crusher is located below the discharge end of the three-stage belt conveyor.

[0007] In some embodiments, the belt conveyor includes a support frame, a frame, a belt, an upper idler roller assembly, and a lower idler roller assembly. The frame is inclined, and a drive roller and a driven roller are rotatably connected to both ends of the frame. The drive roller is driven by a reducer. The support frame is supported below the frame, the upper idler roller assembly is connected above the frame, and the lower idler roller assembly is connected below the frame. The belt is wound around the drive roller, the upper idler roller assembly, the lower idler roller assembly, and the driven roller. Several partitions are equidistantly connected on the belt.

[0008] In some embodiments, guard plates are fixedly connected to both sides of the upper end of the frame, and the height of the guard plates is higher than that of the partition plates to prevent materials from falling off the side of the belt.

[0009] In some embodiments, a dust cover is connected to the upper end of the feed hopper, and a feed inlet is provided at the lower part of the dust cover. A portion of the discharge end of the belt conveyor extends into the feed inlet of the dust cover, and the feed inlet of the dust cover is located above the feed hopper.

[0010] In some embodiments, the surface of the cutting roller has multiple cutting teeth, the cutting teeth of the two cutting rollers in each shredder mesh with each other, and the width of the cutting teeth of the primary shredder is greater than the width of the cutting teeth of the secondary shredder.

[0011] In some embodiments, the dust cover has an exhaust port connected to a dust removal device.

[0012] In some embodiments, the support frame of each belt conveyor includes a front support, a middle support and a rear support. The front support is supported at the front of the frame, the middle support is supported at the middle of the frame and the rear support is supported at the rear of the support. The heights of the front support, the middle support and the rear support decrease sequentially. The bottom of the front support, the middle support and the rear support are respectively connected to a lifting mechanism to adjust the tilt angle of the frame.

[0013] In some embodiments, the bottom of the discharge hopper is located near the partition.

[0014] In some embodiments, the bottom of the shredding chamber is connected to four support legs, which are enclosed by four protective plates to form a closed chamber. The closed chamber has a conveyor opening through which a belt conveyor passes, and the discharge hopper is located inside the closed chamber.

[0015] In some embodiments, the bottom of the enclosed compartment is provided with a receiving plate, which can be pulled out and connected to one side of the enclosed compartment, and a handle is connected to the outward side of the receiving plate. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings.

[0017] in:

[0018] Figure 1This is a schematic diagram of the structure of the multi-stage pulverizing device for wind turbine blades according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the primary belt conveyor in the diagram;

[0020] Figure 3 for Figure 1 A schematic diagram of the internal structure of the primary shredder in the middle;

[0021] Figure 4 for Figure 1 A schematic diagram of the external structure of the primary shredder in the diagram;

[0022] Figure label:

[0023] 1. Primary belt conveyor; 2. Dust removal device; 3. Exhaust system; 4. Primary shredder; 5. Secondary belt conveyor; 6. Secondary shredder; 7. Tertiary belt conveyor; 8. Crusher;

[0024] 101. Guard plate; 102. Upper idler roller assembly; 103. Frame; 104. Belt; 105. Rear support; 106. Lower idler roller assembly; 107. Middle support; 108. Front support;

[0025] 401. Dust cover; 402. Feed hopper; 403. Cutting roller; 404. Discharge hopper; 405. Support leg; 406. Shredder bin; 407. Receiving tray; 408. Handle; 409. Protective plate. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] The multi-stage crushing device for wind turbine blades according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0028] like Figure 1-4 As shown in the figure, an embodiment of the present invention proposes a multi-stage crushing device for wind turbine blades, including: a belt conveyor, a shredder and a crusher 8. The belt conveyor has a feed end and a discharge end, and the discharge end of the belt conveyor is higher than the feed end of the belt conveyor. The belt conveyor includes a primary belt conveyor 1, a secondary belt conveyor 5 and a tertiary belt conveyor 7.

[0029] The shredder includes a feed hopper 402, a shredding chamber 406, and a discharge hopper 404. The shredding chamber 406 has a feed inlet and a discharge outlet. Two interlocking cutting rollers 403 are connected inside the shredding chamber 406. The feed hopper 402 is located above the shredding chamber 406 and connected to the feed inlet of the shredding chamber 406. The discharge hopper 404 is located below the shredding chamber 406 and connected to the discharge outlet of the shredding chamber 406. The shredder includes a primary shredder 4 and a secondary shredder 6. The primary shredder 4 is located between the primary belt conveyor 1 and the secondary belt conveyor 5. The discharge end of the primary belt conveyor 1 is located above the feed hopper 402 of the primary shredder 4, and the feed end of the secondary belt conveyor 5 is located below the discharge hopper 404 of the primary shredder 4. The secondary shredder 6 is located between the secondary belt conveyor 5 and the tertiary belt conveyor 7. The discharge end of the secondary belt conveyor 5 is located above the feed hopper 402 of the secondary shredder 6, and the feed end of the tertiary belt conveyor 7 is located below the discharge hopper 404 of the secondary shredder 6. The discharge particle size of the secondary shredder 6 is smaller than that of the primary shredder 4.

[0030] The crusher 8 is located below the discharge end of the three-stage belt conveyor 7.

[0031] The embodiments of the present invention, by setting up multi-stage belt conveyors and shredders, can improve the fineness of the particles crushed from the fan blades, facilitate the subsequent separation of light and heavy materials, improve work efficiency, and will not damage the crusher 8.

[0032] Furthermore, the primary belt conveyor 1, the secondary belt conveyor 5, and the tertiary belt conveyor 7 have the same structure. The primary shredder 4 and the secondary shredder 6 have the same structure.

[0033] In some embodiments, such as Figure 2 As shown, the belt conveyor includes a support frame, a frame 103, a belt 104, an upper idler roller group 102, and a lower idler roller group 106. The frame 103 is inclined, and a drive roller and a driven roller are rotatably connected to both ends of the frame 103, respectively. The drive roller is connected to a reducer for transmission. The support frame is supported below the frame 103. The upper idler roller group 102 is connected above the frame 103, and the lower idler roller group 106 is connected below the frame 103. The belt 104 is wound around the drive roller, the upper idler roller group 102, the lower idler roller group 106, and the driven roller. Several partitions are equidistantly connected on the belt 104.

[0034] In this embodiment of the invention, by setting a partition on the belt 104 of the belt conveyor, the material can be prevented from slipping during the upward conveying process.

[0035] In some embodiments, such as Figure 2 As shown, guard plates 101 are fixedly connected to both sides of the upper end of the frame 103. The height of the guard plates 101 is higher than that of the partition to prevent materials from falling from the side of the belt 104.

[0036] In some embodiments, such as Figure 3 As shown, a dust cover 401 is connected to the upper end of the feed hopper 402. The lower part of the dust cover 401 has a feed inlet. A portion of the discharge end of the belt conveyor extends into the feed inlet of the dust cover 401. The feed inlet of the dust cover 401 is located above the feed hopper 402.

[0037] In this embodiment of the invention, by setting up a dust cover 401, the dust generated during the process of the belt conveyor feeding material into the feed hopper 402 can be prevented from polluting the outside air.

[0038] In some embodiments, such as Figure 3 As shown, the surface of the cutting roller 403 has multiple cutting teeth, and the cutting teeth of the two cutting rollers 403 in each shredder mesh with each other. The width of the cutting teeth of the primary shredder 4 is greater than the width of the cutting teeth of the secondary shredder 6.

[0039] It is understandable that the smaller the width of the cutting teeth, the smaller the particle size of the resulting particles.

[0040] In some embodiments, such as Figure 1 As shown, the dust cover 401 has an exhaust port, which is connected to the dust removal device 2.

[0041] Furthermore, the exhaust port is connected to an exhaust pipe, and the exhaust pipe is sequentially connected to an exhaust fan 3 and a dust removal device 2. This allows the dust inside the dust cover 401 to be transported to the dust removal device 2 by the exhaust fan 3, and the dust-collected gas is then discharged outwards. The air speed of the exhaust fan 3 is adjustable, and it is usually adjusted to a low speed to prevent material particles from being discharged along with it.

[0042] Understandably, as materials are continuously fed into the dust cover 401, the air pressure inside the dust cover 401 gradually increases, requiring periodic release of some air pressure to ensure normal equipment operation. Therefore, the dust cover 401 cannot be completely sealed. By installing an exhaust port and ventilation device 3 in the dust cover 401, it is also prevented that the generated dust will diffuse outward through the feed inlet of the dust cover 401.

[0043] It should be noted that the crusher 8 is also equipped with a dust cover, an exhaust device and a dust removal device, which will not be described in detail here.

[0044] In some embodiments, such as Figure 2As shown, the support frame of each belt conveyor includes a front support 108, a middle support 107 and a rear support 105. The front support 108 is supported at the front of the frame 103, the middle support 107 is supported at the middle of the frame 103 and the rear support 105 is supported at the rear of the support. The heights of the front support 108, the middle support 107 and the rear support 105 decrease sequentially. The bottom of the front support 108, the middle support 107 and the rear support 105 are respectively connected to a lifting mechanism to adjust the tilt angle of the frame 103.

[0045] In some embodiments, such as Figure 1 As shown, the bottom of the discharge hopper 404 is located near the baffle plate. This reduces the dust generated by the discharge hopper 404 during the discharge process.

[0046] In some embodiments, such as Figure 3 , 4 As shown, the bottom of the shredding chamber 406 is connected to four support legs 405. The four support legs 405 are surrounded by four protective plates 409 to form a closed chamber. The closed chamber has a conveyor opening through which a belt conveyor passes, and the discharge hopper 404 is located inside the closed chamber. This prevents dust generated during the discharge process from the discharge hopper 404 from spreading outward.

[0047] In some embodiments, such as Figure 3 , 4 As shown, the bottom of the enclosed bin is equipped with a receiving plate 407, which can be pulled out and connected to one side of the enclosed bin. A handle 408 is connected to the outward-facing side of the receiving plate 407. This handle can collect materials that have scattered outside the belt conveyor 104 during the discharge process from the discharge hopper 404. The collected materials can be periodically removed and placed on the next-stage belt conveyor.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-stage crushing device for wind turbine blades, characterized in that, include: A belt conveyor having an inlet end and an outlet end, wherein the outlet end of the belt conveyor is higher than the inlet end of the belt conveyor, and the belt conveyor includes a primary belt conveyor, a secondary belt conveyor and a tertiary belt conveyor; A shredder, comprising a feed hopper, a shredding chamber, and a discharge hopper, wherein the shredding chamber has a feed inlet and a discharge outlet, and two interlocking cutting rollers are connected inside the shredding chamber; the feed hopper is located above the shredding chamber and connected to the feed inlet of the shredding chamber, and the discharge hopper is located below the shredding chamber and connected to the discharge outlet of the shredding chamber; the shredder includes a primary shredder and a secondary shredder, wherein the primary shredder is located between the primary belt conveyor and the secondary belt conveyor; the primary belt conveyor... The discharge end of the primary shredder is located above the feed hopper of the primary shredder, and the feed end of the secondary belt conveyor is located below the discharge hopper of the primary shredder. The secondary shredder is located between the secondary belt conveyor and the tertiary belt conveyor. The discharge end of the secondary belt conveyor is located above the feed hopper of the secondary shredder, and the feed end of the tertiary belt conveyor is located below the discharge hopper of the secondary shredder. The discharge particle size of the secondary shredder is smaller than that of the primary shredder. A crusher is located below the discharge end of the three-stage belt conveyor.

2. The multi-stage pulverizing device for wind turbine blades according to claim 1, characterized in that, The belt conveyor includes a support frame, a frame, a belt, an upper idler roller assembly, and a lower idler roller assembly. The frame is inclined, and a drive roller and a driven roller are rotatably connected to both ends of the frame. The drive roller is driven by a reducer. The support frame is supported below the frame. The upper idler roller assembly is connected above the frame, and the lower idler roller assembly is connected below the frame. The belt is wound around the drive roller, the upper idler roller assembly, the lower idler roller assembly, and the driven roller. Several partitions are equidistantly connected to the belt.

3. The multi-stage pulverizing device for wind turbine blades according to claim 2, characterized in that, The upper end of the frame is fixedly connected to two guard plates on both sides. The height of the guard plates is higher than that of the partition plate to prevent materials from falling off the side of the belt.

4. The multi-stage pulverizing device for wind turbine blades according to claim 1, characterized in that, The upper end of the feed hopper is connected to a dust cover, and the lower part of the dust cover has a feed inlet. A portion of the discharge end of the belt conveyor extends into the feed inlet of the dust cover, and the feed inlet of the dust cover is located above the feed hopper.

5. The multi-stage pulverizing device for wind turbine blades according to claim 1, characterized in that, The surface of the cutting roller has multiple cutting teeth, and the cutting teeth of the two cutting rollers in each shredder mesh with each other. The width of the cutting teeth of the first-stage shredder is greater than the width of the cutting teeth of the second-stage shredder.

6. The multi-stage pulverizing device for wind turbine blades according to claim 4, characterized in that, The dust cover has an exhaust port, which is connected to a dust removal device.

7. The multi-stage pulverizing device for wind turbine blades according to claim 2, characterized in that, Each of the belt conveyors has a support frame including a front support, a middle support, and a rear support. The front support is supported at the front of the frame, the middle support is supported at the middle of the frame, and the rear support is supported at the rear of the support frame. The heights of the front support, the middle support, and the rear support decrease sequentially. The bottom of the front support, the middle support, and the rear support are respectively connected to a lifting mechanism to adjust the tilt angle of the frame.

8. The multi-stage pulverizing device for wind turbine blades according to claim 2, characterized in that, The bottom of the discharge hopper is located near the partition.

9. The multi-stage pulverizing device for wind turbine blades according to claim 1, characterized in that, The bottom of the shredding chamber is connected to four support legs, which are enclosed by four protective plates to form a closed chamber. The closed chamber has a transmission port through which the belt conveyor passes, and the discharge hopper is located inside the closed chamber.

10. The multi-stage pulverizing device for wind turbine blades according to claim 9, characterized in that, The bottom of the enclosed compartment is provided with a receiving plate, which can be pulled out and connected to one side of the enclosed compartment. A handle is connected to the outward side of the receiving plate.

Images