Wind turbine blade recycling production line

Abstract

This patent relates to the technical field of wind turbine blade recycling and reuse, specifically a wind turbine blade recycling and reuse production line, including a shredding module, a PVC particle screening module, a crushing module, a fiber making module, a powder making module and a conveying module; the shredding module is used to shred the blade blocks; the PVC particle screening module is used to screen out PVC blocks and glass fiber reinforced plastics with PVC whose PVC volume accounts for more than 70% and crush them, and then screen out the PVC particles; the crushing module is used to crush the mixture into glass fiber bundles and glass fiber reinforced plastic fiber powder; the fiber making module is used to classify and screen the glass fiber reinforced plastic fiber bundles according to their lengths; the powder making module is used to crush the unqualified glass fiber reinforced plastic fiber bundles screened out by the fiber making module into powder. This solution processes the wind turbine blades into PVC particles, glass fiber reinforced plastic fiber bundles and fiber powder, which are economically valuable production raw materials, through multi-stage crushing and crushing, and recycles all materials in the wind turbine blades except for structural adhesives, balsa wood and other materials, with a high recycling rate.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine blade recycling and reuse, and in particular to a wind turbine blade recycling and reuse production line. Background Art

[0002] Wind turbine blades are mainly made of thermosetting materials and fiber materials, and are generally bulky. When wind turbine blades reach the end of their service life, they need to be processed. Currently, most companies only use manual cutting to cut them into relatively small blade pieces for reuse or disposal. There is no complete and mature process and production line for wind turbine blade recycling and reuse. Summary of the invention

[0003] The present invention aims to provide a wind turbine blade recycling and reuse production line, which can recycle waste wind turbine blades to form final raw materials for production.

[0004] In order to achieve the above-mentioned object, the basic scheme of the present invention is as follows: a wind turbine blade recycling and reuse production line includes a shredding module, a PVC particle screening module, a crushing module, a fiber making module, a powder making module and a conveying module;

[0005] The shredding module is used to shred the blade blocks to form a mixture of 5-8 cm flake glass fiber reinforced plastics, PVC blocks, glass fiber reinforced plastics with PVC, glass fiber bundles and glass fiber reinforced plastic fiber powder;

[0006] The PVC particle screening module is used to screen out PVC blocks and glass fiber reinforced plastics with PVC whose volume accounts for more than 70%, and crush the PVC blocks and glass fiber reinforced plastics with PVC whose volume accounts for more than 70% to form PVC particles, sheet glass fiber reinforced plastics, glass fiber reinforced plastic fiber bundles and glass fiber reinforced plastic fiber powder, and then screen out the PVC particles;

[0007] The crushing module is used to crush the mixture of flaky FRP, FRP fiber bundles and FRP fiber powder screened out by the PVC particle screening module into glass fiber bundles and FRP fiber powder;

[0008] The fiber making module is used to classify and screen the FRP fiber bundles according to their lengths, and divide them into anti-cracking FRP fiber bundles, anti-bending and anti-impact FRP fiber bundles, and unqualified FRP fiber bundles;

[0009] The powder making module is used to crush the unqualified glass fiber bundles screened out by the fiber making module into powder;

[0010] The conveying module is used for material transmission among the shredding module, the PVC particle screening module, the crushing module, the fiber making module and the powder making module.

[0011] Furthermore, the shredding module includes a shredder, and the crushing module includes two hammer crushers connected in parallel.

[0012] Furthermore, the PVC particle screening module includes a drum screen, a crusher and a specific gravity separator. The drum screen screens out PVC blocks and glass fiber reinforced plastics with PVC that account for more than 70% of the PVC volume. The crusher crushes the PVC blocks and glass fiber reinforced plastics with PVC that account for more than 70% of the PVC volume to form PVC particles, flaky glass fiber reinforced plastics, glass fiber reinforced plastic fiber bundles and glass fiber reinforced plastic fiber powder. The specific gravity separator screens out PVC particles.

[0013] Furthermore, the fiber making module includes a cleaning machine, a dewatering machine, a drying machine, a color sorter and a flat rotary screen. The cleaning machine, the dewatering machine and the drying machine clean, dewater and dry the FRP fiber bundles, and are used to remove powder, PVC particles and balsa wood particles in the material and on the surface of the FRP fiber bundles. The color sorter is used to remove structural adhesive impurities in the dried FRP fiber bundles. The flat rotary screen classifies and screens the FRP fiber bundles according to their lengths, and divides the FRP fiber bundles into anti-cracking FRP fiber bundles, flexural and impact-resistant FRP fiber bundles and unqualified FRP fiber bundles.

[0014] Furthermore, the powder making module comprises an impact mill and a vibrating screen, wherein the impact mill is used to crush unqualified glass fiber bundles screened out by the fiber making module into powder, and the vibrating screen is used to screen out finished powder products with qualified mesh size.

[0015] Furthermore, the conveying module includes a plurality of skirt belt conveyors, mesh belt conveyors and screw conveyors.

[0016] Furthermore, the crushing module also includes two dust collectors and dust removal pipes, the two dust collectors are respectively connected to the two hammer crushers, and the dust removal pipes are connected to the dust collectors.

[0017] Furthermore, it also includes three balers, which are respectively installed at the finished product outlets of the specific gravity separator, the flat rotary screen and the vibrating screen.

[0018] The beneficial effects of this scheme are as follows: (1) This scheme processes wind turbine blades into economically valuable production raw materials such as PVC particles, glass fiber bundles and fiber powder through multi-stage crushing and pulverization, and recycles all materials in the wind turbine blades except structural adhesive, balsa wood and other materials, with a high recycling rate.

[0019] (2) The flat rotary screen divides the FRP fiber bundles into anti-cracking FRP fiber bundles and flexural and impact-resistant FRP fiber bundles. Classifying the FRP fiber bundles can more accurately meet the specific requirements of the raw material demanders.

[0020] (3) The vibrating screen can screen out powder products with qualified mesh size. According to the fiber powder mesh size requirements of the raw material purchasing customer, the fiber powder can be screened during production to broaden the application range of the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The reference numerals in the drawings of the specification include: shredder 1, drum screen 2, crusher 3, specific gravity separator 4, hammer crusher 5, cyclone separator 6, dust collector 7, dust removal pipeline 8, cleaning machine 9, dewatering machine 10, dryer 11, color sorter 12, flat rotary screen 13, impact mill 14, vibrating screen 15, skirt belt conveyor 16, screw conveyor 17, mesh belt conveyor 18, baler 19.

[0024] Example

[0025] Basically as attached Figure 1 As shown: Wind turbine blade recycling and reuse production line, including shredding module, PVC particle screening module, crushing module, fiber making module, powder making module, conveying module and packaging module;

[0026] The shredding module comprises a shredder 1, which shreds the blade blocks to form a mixture of 5-8 cm flake FRP, PVC blocks, FRP with PVC, glass fiber bundles and FRP fiber powder;

[0027] The PVC particle screening module includes a drum screen 2, a crusher 3 and a specific gravity separator 4. The drum screen 2 screens out PVC blocks and glass fiber reinforced plastics with PVC that account for more than 70% of the PVC volume. The crusher 3 crushes the PVC blocks and glass fiber reinforced plastics with PVC that account for more than 70% of the PVC volume to form PVC particles, sheet glass fiber reinforced plastics, glass fiber reinforced plastic fiber bundles and glass fiber reinforced plastic fiber powder. The specific gravity separator 4 screens out the PVC particles.

[0028] The crushing module includes two parallel hammer crushers 5, two cyclone separators 6, two dust collectors 7 and a dust removal pipeline 8. The two parallel hammer crushers 5 crush the mixture of flaky FRP, FRP fiber bundles and FRP fiber powder screened by the PVC particle screening module into glass fiber bundles and FRP fiber powder. The cyclone separator 6 separates the FRP fiber powder from the FRP fiber bundle. The two dust collectors 7 are respectively connected to the two hammer crushers 5, and the dust removal pipeline 8 is connected to the dust collector 7.

[0029] The fiber making module includes a cleaning machine 9, a dehydrating machine 10, a drying machine 11, a color sorting machine 12 and a flat rotary screen 13. The cleaning machine 9, the dehydrating machine 10 and the drying machine 11 clean, dehydrate and dry the FRP fiber bundles, and are used to remove powder, PVC particles and balsa wood particles in the material and on the surface of the FRP fiber bundles. The color sorting machine 12 is used to remove structural adhesive impurities in the dried FRP fiber bundles. The flat rotary screen 13 classifies and screens the FRP fiber bundles according to their lengths, and divides the FRP fiber bundles into anti-cracking FRP fiber bundles, anti-bending and anti-impact FRP fiber bundles and unqualified FRP fiber bundles.

[0030] The powder making module includes an impact mill 14 and a vibrating screen 15. The impact mill 14 is used to crush the unqualified glass fiber bundles screened out by the fiber making module and the glass fiber powder separated by the crushing module into powders of a specified mesh size. The vibrating screen 15 is used to screen out finished powders of a qualified mesh size.

[0031] The conveying module is used for material transmission between the shredding module, the PVC particle screening module, the crushing module, the fiber making module and the powder making module. The conveying module includes a plurality of skirt belt conveyors 16, mesh belt conveyors 18 and screw conveyors 17. The skirt belt conveyor 16 is used for material transportation between the shredding module and the PVC particle screening module, the skirt belt conveyor 16 and the screw screw conveyor 17 are used for material transportation between the fiber making module and the PVC particle screening module, and the mesh belt conveyor 18 is used for material transportation between the powder making modules;

[0032] The packaging module includes three packaging machines 19 , which are respectively installed at the finished product outlets of the specific gravity separator 4 , the flat rotary screen 13 and the vibrating screen 15 .

[0033] The specific implementation process is as follows: In this embodiment, wind turbine blades are processed into economically valuable production raw materials such as PVC particles, glass fiber bundles and fiber powder through multi-stage crushing and pulverization, and all materials in the wind turbine blades except structural adhesive, balsa wood and other materials are recycled, with a high recycling rate.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Wind turbine blade recycling and reuse production line, characterized by: It includes shredding module, PVC particle screening module, crushing module, fiber making module, powder making module and conveying module; The shredding module is used to shred the blade blocks to form a mixture of 5-8 cm flake glass fiber reinforced plastics, PVC blocks, glass fiber bundles and glass fiber reinforced plastic fiber powder; The PVC particle screening module is used to screen out PVC blocks and sheet glass steel with a PVC volume ratio of more than 70%, and crush the PVC blocks and sheet glass steel with a PVC volume ratio of more than 70% to form PVC particles, sheet glass steel, glass steel fiber bundles and glass steel fiber powder, and then screen out the PVC particles. The PVC particle screening module includes a drum screen, a crusher and a specific gravity separator. The drum screen screens out PVC blocks and glass steel with PVC with a PVC volume ratio of more than 70%. The crusher crushes PVC blocks and glass steel with PVC with a PVC volume ratio of more than 70% to form PVC particles, sheet glass steel, glass steel fiber bundles and glass steel fiber powder. The specific gravity separator screens out the PVC particles. The crushing module is used to crush the mixture of flaky FRP, FRP fiber bundles and FRP fiber powder screened by the PVC particle screening module into glass fiber bundles and FRP fiber powder; The fiber making module is used to classify and screen the FRP fiber bundles according to their lengths, into anti-cracking FRP fiber bundles, anti-bending and anti-impact FRP fiber bundles, and unqualified FRP fiber bundles; The powder making module is used to crush the unqualified FRP fiber bundles screened out by the fiber making module into powder. The fiber making module includes a cleaning machine, a dehydrating machine, a drying machine, a color sorter and a flat rotary screen. The cleaning machine, the dehydrating machine and the drying machine clean, dehydrate and dry the FRP fiber bundles, and are used to remove powder, PVC particles and balsa wood particles in the material and on the surface of the FRP fiber bundles. The color sorter is used to remove structural adhesive impurities in the dried FRP fiber bundles. The flat rotary screen classifies and screens the FRP fiber bundles according to their lengths, and divides the FRP fiber bundles into anti-cracking FRP fiber bundles, anti-bending and anti-impact FRP fiber bundles and unqualified FRP fiber bundles. The conveying module is used for material transmission among the shredding module, the PVC particle screening module, the crushing module, the fiber making module and the powder making module.

2. The wind turbine blade recycling production line according to claim 1 is characterized by: The shredding module comprises a shredder, and the crushing module comprises two hammer crushers connected in parallel.

3. The wind turbine blade recycling production line according to claim 1 is characterized by: The powder making module comprises an impact mill and a vibrating screen, wherein the impact mill is used to crush unqualified glass fiber bundles screened out by the fiber making module into powder, and the vibrating screen is used to screen out finished powder products with qualified mesh size.

4. The wind turbine blade recycling production line according to claim 1 is characterized by: The conveying module includes several skirt belt conveyors, mesh belt conveyors and screw conveyors.

5. The wind turbine blade recycling production line according to claim 4 is characterized in that: The crushing module also includes two dust collectors and dust removal pipelines. The two dust collectors are respectively connected to two hammer crushers, and the dust removal pipeline is connected to the dust collectors.

6. The wind turbine blade recycling production line according to any one of claims 1 to 5, characterized in that: It also includes three balers, which are respectively installed at the finished product outlets of the specific gravity sorter, the flat rotary screen and the vibrating screen.

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