Wind power blade crushing and recycling device

Abstract

The utility model relates to the field of wind power blade recycling, and discloses a wind power blade crushing and recycling device which comprises a four-shaft shredding unit, a crushing unit, a negative pressure feeding unit, an air gravity sorting unit, a grinding unit, a screening unit, a powder collecting unit, a cloth bag dust removing unit and a conveying assembly. The negative pressure feeding unit is connected with the crushing unit and the air gravity sorting unit; the screening unit is connected with the grinding unit and the powder collecting unit; a dust removal pipeline is fixedly arranged on the cloth bag dust removal unit and is connected with the four-shaft shredding unit, the crushing unit, the negative pressure feeding unit and the screening unit. The utility model has the following advantages and effects: by designing the special complete equipment for crushing, crushing, sorting, grinding and dedusting the retired wind power blade, the retired wind power blade can be automatically crushed, crushed, sorted, ground and dedusted, and the purposes of high efficiency, energy conservation and environmental protection are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine blade recovery, in particular to a wind turbine blade crushing and recovery device. Background Art

[0002] The design service life of wind turbine blades is generally 25 to 30 years. Retired wind turbine blades contain a large amount of fiber-reinforced composite materials, such as glass fiber and carbon fiber reinforced epoxy resin composite materials. They have high structural strength and are difficult to degrade. If they are treated by stacking and landfilling, they will occupy land for a long time and pollute the water and soil. The resource utilization of retired wind turbine blades is an important issue facing the development of renewable energy. Its disassembly and crushing are the key prerequisites and difficulties in realizing resource utilization. Direct crushing consumes extremely high energy and has strict requirements on crushing equipment. At present, there is still a lack of reliable and efficient crushing and recycling equipment and methods.

[0003] At present, there is no complete set of specialized equipment for the crushing, pulverizing, sorting, grinding and dust removal of retired wind turbine blades. Therefore, we have specially developed a comprehensive environmentally friendly recycling and processing line suitable for retired wind turbine blades to achieve the goals of high efficiency, energy saving and environmental protection.

[0004] At present, the main method for processing retired wind turbine blades is manual cutting with a rock saw, which is time-consuming, uneven in size, low in production efficiency, and poor in production conditions. It causes serious harm to the human body. The volume of the broken materials is large, and the processing efficiency is low. Due to the large size of manual cutting, they can only be landfilled, and the processing cost is high. Incineration technology is also used, but the glass fiber has basically no recycling value.

[0005] Therefore, it is necessary to design a wind turbine blade crushing recovery device to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a wind turbine blade crushing recovery device to solve the above problems.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: a wind turbine blade crushing and recovery device, comprising:

[0008] Four-axis shredder unit, crusher unit, negative pressure feeding unit, air gravity sorting unit, grinding unit, screening unit, powder collection unit, bag dust removal unit and conveying components;

[0009] The negative pressure feeding unit is connected to the pulverizing unit and the air gravity sorting unit, and the screening unit is connected to the grinding unit and the powder collecting unit;

[0010] A dust removal pipeline is fixedly arranged on the bag dust removal unit, and the dust removal pipeline is connected with the four-axis shredder unit, the pulverizer unit, the negative pressure feeding unit and the screening unit.

[0011] The utility model is further configured as follows: the conveying assembly includes a belt conveyor 1, a belt conveyor 2 and a belt conveyor 3, the belt conveyor 2 is installed between the four-axis shredder unit and the crushing unit, and the belt conveyor 3 is installed between the air gravity sorting unit and the grinding unit.

[0012] The utility model is further configured as follows: four crushing shafts are rotatably installed in the four-shaft shredder unit, and double-edged movable knives are fixedly installed on the crushing shafts.

[0013] By adopting the above technical solution, the crushing shafts on both sides can bring the materials to the middle position, and the middle crushing shaft shreds the materials.

[0014] The utility model is further configured as follows: a screen is fixedly arranged at the bottom of the pulverizing unit.

[0015] The utility model is further configured as follows: a glass fiber reinforced plastic powder discharge pipe is fixedly arranged at the bottom of the powder collecting unit.

[0016] By adopting the above technical solution, it is convenient to discharge the fiberglass reinforced plastic powder.

[0017] The utility model is further configured as follows: an air inlet pipe is fixedly arranged on the bag dust removal unit, a centrifugal dust exhaust fan is fixedly arranged on the end of the air inlet pipe, and an air outlet pipe is fixedly arranged on the centrifugal dust exhaust fan.

[0018] By adopting the above technical solution, it is convenient to carry out dust removal treatment on the entire device.

[0019] The beneficial effects of the utility model are:

[0020] The utility model is designed to be a special complete set of equipment for the crushing, pulverizing, sorting, grinding and dust removal of retired wind turbine blades, which can automatically crush, pulverize, sort, grind and dust remove retired wind turbine blades to achieve the goals of high efficiency, energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 The utility model is a structural schematic diagram of a wind turbine blade crushing and recovery device.

[0023] Figure 2 yes Figure 1 Schematic diagram of the structure of part A in .

[0024] In the figure, 1. Four-axis shredder unit; 2. Crushing unit; 3. Negative pressure feeding unit; 4. Air gravity sorting unit; 5. Grinding unit; 6. Screening unit; 7. Powder collecting unit; 8. Bag dust removal unit; 9. Dust removal pipeline; 10. Centrifugal dust exhaust fan; 11. Air inlet pipe; 12. Air outlet pipe; 13. Belt conveyor one; 14. Belt conveyor two; 15. Belt conveyor three; 16. FRP powder discharge pipe; 17. Crushing shaft. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1 and Figure 2 The utility model provides a wind turbine blade crushing and recovery device, comprising:

[0028] Four-axis shredder unit 1, crusher unit 2, negative pressure feeder unit 3, air gravity sorter unit 4, grinding unit 5, screening unit 6, powder collection unit 7, bag dust removal unit 8 and conveying components;

[0029] The negative pressure feeding unit 3 is connected to the crushing unit 2 and the air gravity sorting unit 4, and the screening unit 6 is connected to the grinding unit 5 and the powder collecting unit 7. It should be noted that the grinding unit 5 adopts a horizontal shaft end feeding grinder, and the grinder adopts a meshless structure, which has good effect and no over-grinding phenomenon. The grinding chamber is equipped with a circulating water cooling device to effectively control the working temperature of the grinding chamber and prevent the material from being thermally sensitive and plasticized;

[0030] It should also be noted that the pulverizing unit 2 pulverizes the material into toothpick-sized fibers, and the pulverizing process is fully sealed. The upper part of the feed port is connected to the dust removal pipe 9, and the material is extracted by high negative pressure. The entire feeding process is transported by a fully sealed pipeline, which effectively prevents dust from spilling out and improves the on-site working environment.

[0031] A dust removal pipeline 9 is fixedly arranged on the bag dust removal unit 8 , and the dust removal pipeline 9 is connected with the four-axis shredder unit 1 , the pulverizer unit 2 , the negative pressure feeding unit 3 and the screening unit 6 .

[0032] It should be noted that the four-axis shredder unit 1 is used to shred the wind turbine blades, the crushing unit 2 is used to crush the shredded wind turbine blades, the negative pressure feeding unit 3 uses a high negative pressure method to extract the material, and the air gravity sorting unit 4 is set up to use reverse airflow and the material's own gravity to sort the light material. The reverse airflow and the heavy material fall down by their own weight. The grinding unit 5 is used to grind the material, the screening unit 6 is used to screen the material, the powder collection unit 7 is used to collect powder, and the bag dust removal unit 8 is used to remove dust from the entire device.

[0033] Specifically, the conveying assembly includes a belt conveyor 1 13, a belt conveyor 2 14 and a belt conveyor 3 15. The belt conveyor 2 14 is installed between the four-axis shredder unit 1 and the crusher unit 2, and the belt conveyor 3 15 is installed between the air gravity sorting unit 4 and the grinding unit 5.

[0034] Through the above structure, the wind turbine blade mixed material is conveyed to the four-axis shredder unit 1 through the belt conveyor 13 for shredding processing, the shredded material falls on the belt conveyor 2 14, and is conveyed to the crushing unit 2 through the belt conveyor 2 14 for crushing processing, the pure fiberglass material dropped from the air gravity sorting unit 4 falls on the belt conveyor 3 15, and the belt conveyor 3 15 conveys the pure fiberglass material to the grinding unit 5 for grinding processing.

[0035] Specifically, four crushing shafts 17 are rotatably installed in the four-axis shredder unit 1, and double-edged movable knives are fixedly installed on the crushing shafts 17. It should be noted that the crushing shafts 17 on both sides can bring the material to the middle position, and the middle crushing shaft 17 shreds the material. The drive of the four-axis shredder unit 1 is controlled by PLC. When the current is overloaded, the crushing shafts 17 reverse to protect the machine from damage.

[0036] Specifically, a screen is fixedly arranged at the bottom of the pulverizing unit 2. It should be noted that when the size of the pulverized material is smaller than the screen hole, it is extracted through high negative pressure.

[0037] Specifically, a FRP powder discharge pipe 16 is fixedly provided at the bottom of the powder collecting unit 7, which is convenient for discharging the FRP powder.

[0038] Specifically, the bag-type dust removal unit 8 is fixedly provided with an air inlet pipe 11, a centrifugal dust exhaust fan 10 is fixedly provided at the end of the air inlet pipe 11, and an air outlet pipe 12 is fixedly provided on the centrifugal dust exhaust fan 10. It should be noted that the bag-type dust removal unit 8 adopts a cartridge-type explosion-proof dust collector, and the dust collector is equipped with a spark arrester, an explosion-proof membrane and an explosion-proof valve, etc., which can effectively collect the dust generated in the production process, prevent explosion caused by high dust concentration, and reduce the safety risk of operation.

[0039] The above is a detailed introduction to a wind turbine blade crushing and recovery device provided by the utility model. This article uses specific embodiments to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A wind turbine blade crushing and recovery device, characterized in that: include: A four-axis shredder unit (1), a crushing unit (2), a negative pressure feeding unit (3), an air gravity sorting unit (4), a grinding unit (5), a screening unit (6), a powder collecting unit (7), a bag dust removal unit (8) and a conveying component; The negative pressure feeding unit (3) is connected to the pulverizing unit (2) and the air gravity sorting unit (4), and the screening unit (6) is connected to the grinding unit (5) and the powder collecting unit (7); The bag dust removal unit (8) is fixedly provided with a dust removal pipeline (9), and the dust removal pipeline (9) is connected to the four-axis shredder unit (1), the pulverizer unit (2), the negative pressure feeding unit (3) and the screening unit (6).

2. A wind turbine blade crushing and recovery device according to claim 1, characterized in that: The conveying assembly comprises a belt conveyor 1 (13), a belt conveyor 2 (14) and a belt conveyor 3 (15); the belt conveyor 2 (14) is installed between the four-axis shredder unit (1) and the crusher unit (2); and the belt conveyor 3 (15) is installed between the air gravity sorting unit (4) and the grinding unit (5).

3. The wind turbine blade crushing and recovery device according to claim 1, characterized in that: Four crushing shafts (17) are rotatably mounted inside the four-shaft shredder unit (1), and a double-edged movable knife is fixedly mounted on the crushing shaft (17).

4. The wind turbine blade crushing and recovery device according to claim 1, characterized in that: A screen is fixedly arranged at the bottom of the pulverizer group (2).

5. The wind turbine blade crushing and recovery device according to claim 1, characterized in that: A glass fiber reinforced plastic powder discharge pipe (16) is fixedly arranged at the bottom of the powder collecting unit (7).

6. The wind turbine blade crushing and recovery device according to claim 1, characterized in that: An air inlet pipe (11) is fixedly arranged on the bag dust removal unit (8), a centrifugal dust exhaust fan (10) is fixedly arranged at the end of the air inlet pipe (11), and an air outlet pipe (12) is fixedly arranged on the centrifugal dust exhaust fan (10).

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