Method for regenerating and recycling glass fibers from waste fan blades

Abstract

The invention discloses a method for regenerating and recycling glass fibers from waste fan blades, which belongs to the technical field of resource recycling, and comprises the following steps of: pretreating waste materials, cutting the waste fan blades into cut materials with the size convenient for transportation on site by using a hydraulic shearing machine; further crushing the sheared materials transported to a factory into palm-sized blocky materials, performing heat treatment in the furnace, continuously feeding the blocky materials into an anaerobic rotary furnace at the temperature of 500 DEG C to decompose plastics into synthetic gas, and using the gas for power generation, heat supply or heating of the rotary furnace; according to the method, the waste fan blades can be treated through physical step-by-step decomposition and pyrolysis, the pyrolysis efficiency is improved through the stirring blades, uneven local heating and material damage are avoided, gas and heat replacement can be achieved through continuous injection of hot gas and regulation and control of rotation of the inner converter body, secondary pollution is avoided, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of resource recycling, and in particular to a method for regenerating and recycling glass fibers from waste fan blades. Background Art

[0002] As the global demand for clean energy continues to grow, wind power generation has been widely used and rapidly developed as a renewable energy technology. In recent years, the global wind power installed capacity has continued to rise, and a large number of wind turbines have been put into operation;

[0003] However, the service life of a wind turbine is usually 20-25 years. As the wind turbines installed earlier gradually reach the end of their service life, the problem of handling used wind turbine blades has become increasingly prominent. According to relevant statistics, a large number of wind turbine blades are facing retirement every year around the world, and this number is expected to continue to increase in the next few years, which poses a huge challenge to environmental protection and resource utilization.

[0004] In conjunction with the above content, it should be explained that: Chinese patent with announcement number CN115716716B discloses a method for pyrolyzing and recovering high-quality glass fibers from retired fan blades. The activator and the carbon remover are used to effectively achieve the in-situ removal of pyrolytic carbon on the fiber surface after pyrolysis of retired fan blades. However, the blade blocks are in a static state in the blade recovery reactor, which can easily cause prolonged heating time, uneven heat conduction and differentiation of reaction levels, causing some blade materials to be excessively exposed to high temperature load.

[0005] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a method for regenerating and recycling glass fiber from waste fan blades, which can achieve rapid and stable material processing from blade cutting and crushing to rotary kiln treatment and secondary purification. In terms of product quality and resource utilization, the conditions are precisely controlled, the pyrolysis process is optimized, and effective purification methods are used to ensure the quality of the recycled products, improve the resource recovery rate, and reduce pollutant emissions while meeting environmental protection standards. The scientific design of the equipment and precise parameter control ensure operational stability and reliability. The overall process provides an efficient, environmentally friendly and reliable solution for the recycling of waste fan blades to solve the technical problems raised by the background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a method for regenerating and recycling glass fiber from waste fan blades, comprising the following steps:

[0008] Waste pretreatment: Use hydraulic shears to cut the used fan blades into shear fragments of a size that is convenient for transportation on site. The shear fragments transported to the factory are further crushed into palm-sized blocks.

[0009] Heat treatment in the furnace, the block material is continuously fed into an oxygen-free rotary furnace at 500°C to decompose the plastic into synthetic gas, which can be used for power generation, heat supply or heating the rotary furnace.

[0010] The secondary purification treatment purifies the glass fiber material in the presence of air through a secondary rotary kiln, removes and recovers metals using magnets, removes dust from the remaining glass fiber material, and obtains a relatively pure glass fiber material.

[0011] Waste flue gas treatment: the waste flue gas generated by incineration is treated by a dust collector and then discharged into the atmosphere.

[0012] The present invention also proposes a device for regenerating and recycling glass fiber from waste fan blades. The oxygen-free rotary furnace includes an oxygen-free furnace body, an inner rotary furnace body is arranged inside the oxygen-free furnace body, and a ventilation rack and a drive assembly are arranged on the outer wall of the oxygen-free furnace body, a stirring blade is arranged on the inner wall of the inner rotary furnace body, and a feed end cover and a discharge end cover are respectively arranged at both ends of the inner rotary furnace body.

[0013] Furthermore, a ring frame is arranged in the middle of the inner wall of the oxygen-free furnace body, and spiral guide vanes are symmetrically arranged at both ends of the ring frame.

[0014] Furthermore, intake valves are symmetrically arranged at both ends of the outer wall of the ventilation frame, and the interior of the intake valve extends to the spiral guide vane installation area. Multiple groups of exhaust valves are symmetrically arranged in the middle of the outer wall of the ventilation frame, and the interior of the exhaust valve extends to both ends of the ring frame.

[0015] Furthermore, sealing rings are symmetrically arranged at both ends of the inner converter body, a convex ring is arranged on the inner wall of the sealing ring, and the stirring blades are staggered and arranged on the inner wall of the inner converter body.

[0016] Furthermore, a ring partition plate 1 is arranged at one end of the feed end cover close to the inner converter body, an air intake pipe penetrating the ring partition plate 1 is arranged in the middle of the feed end cover, and a feed pipe penetrating the ring partition plate 1 is arranged obliquely at the top of the feed end cover.

[0017] Furthermore, a second annular partition plate is provided at one end of the discharge end cover close to the inner converter body, an exhaust mesh port is penetrated through the top of the second annular partition plate, and an exhaust pipe connected to the exhaust mesh port is penetrated through the middle of the outer wall of the discharge end cover.

[0018] Furthermore, a sealing plate is hinged on the bottom plate of the second annular partition, a telescopic cylinder connected to the inner wall of the top of the discharge end cover is arranged on the outer wall of the sealing plate, and a discharge pipe close to the bottom of the discharge end cover is arranged at the bottom of the discharge end cover.

[0019] Furthermore, the driving assembly includes a main ring sleeve and a secondary ring sleeve, the main ring sleeve and the secondary ring sleeve are symmetrically sleeved on both ends of the oxygen-free furnace body and the inner converter body, and a support body is arranged on the inner sleeve wall of the main ring sleeve.

[0020] Furthermore, one end of the support body is provided with a slide groove 1 connected to the oxygen-free furnace body, the other end of the support body is provided with a slide groove 2 connected to the inner converter body and the discharge end cover, a traction chain connected to the inner converter body is provided inside the support body, and a driving motor connected to the traction chain is provided at the bottom of the main ring sleeve.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention physically decomposes waste fan blades step by step and performs pyrolysis treatment on them. A stirring blade is used to drive the block materials to rotate and roll along the inner converter body, so as to achieve uniform mixing and heating of the block materials and improve the pyrolysis efficiency. Under the regulation of the rotation direction of the inner converter body, the block materials are guided to roll and gather, so as to improve the rapid and uniform pyrolysis treatment of a single batch of block materials, and effectively avoid the accumulation of local block materials, uneven heating and high-temperature damage of local materials.

[0023] 2. The present invention continuously injects hot gas into the inner converter body through an air inlet pipe, so as to promote the gas retained and generated by pyrolysis to continuously flow into the discharge end cover, thereby realizing the continuous replacement of gas and heat inside the inner converter body, avoiding the secondary pollution of block materials after pyrolysis, and improving the energy utilization efficiency. After the pyrolysis is completed, the block materials after pyrolysis are cleaned to the discharge area by adjusting the rotation direction of the inner converter body, and the sealing plate is driven to rotate by the telescopic cylinder to realize the centralized discharge of the block materials, which are collected by external equipment and sent to the secondary rotary kiln for subsequent processing. The whole operation process has a high degree of automation and reduces manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 paying creative work.

[0025] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0026] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the oxygen-free furnace body of the present invention;

[0028] Figure 4 It is a schematic structural diagram of the feed end cover of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the inner converter body of the present invention;

[0030] Figure 6 It is a schematic diagram of the connection structure between the converter body and the driving assembly in the present invention;

[0031] Figure 7 It is a structural schematic diagram of the discharge end cover of the present invention;

[0032] Figure 8 It is a process flow chart of the present invention.

[0033] Figure numerals: 1. oxygen-free furnace body; 101. spiral guide vane; 102. ring frame; 2. feed end cover; 201. air inlet pipe; 202. feed pipe; 203. ring baffle one; 3. ventilation frame; 4. discharge end cover; 401. air outlet pipe; 402. discharge pipe; 403. ring baffle two; 404. exhaust mesh port; 405. sealing plate; 406. telescopic cylinder; 5. drive assembly; 501. main ring sleeve; 502. secondary ring sleeve; 503. slide slot one; 504. traction chain; 505. slide slot two; 506. drive motor; 6. inner rotary furnace body; 601. sealing ring; 602. stirring blade. DETAILED DESCRIPTION

[0034] 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.

[0035] Example 1: Please refer to Figure 1 - Figure 8 As shown, this embodiment is a method for regenerating and recycling glass fibers from waste fan blades, comprising the following steps:

[0036] Waste pretreatment: Use a hydraulic shear to cut the waste fan blades into pieces of a size that is easy to transport on site. The shear force of the hydraulic shear needs to be selected according to the material and thickness of the fan blades. Use equipment with a shear force of 63t-400t or more to ensure that the blades can be cut smoothly to a size that is easy to transport. Cut the blades into pieces with a length not exceeding 3-5 meters and a width not exceeding 1-2 meters. It should be noted that the specific size can be adjusted according to the actual specifications of the transport vehicle and road transport restrictions.

[0037] The sheared scraps transported to the factory are further crushed into palm-sized blocks. The cut waste is sent to the factory and crushed into palm-sized blocks by a crusher. The crusher rotates from several hundred to several thousand revolutions per minute. The blocks are palm-sized and can be adjusted according to demand. The energy consumption generated by the crusher is marked as crushing energy consumption W. The original material particle size and finished product particle size generated by the processing of the block material are marked as F and P respectively.

[0038] When the raw material particle size is infinite and the finished product diameter is P, the expression of energy consumption W is

[0039] When the raw material particle size is F and the finished product particle size is P, the expression of energy consumption W is: Where K is a correction factor that depends on the type and efficiency of the pulverizer.

[0040] Heat treatment in the furnace, the block material is continuously fed into an oxygen-free rotary furnace at 500°C to decompose the plastic into synthetic gas. The gas can be used for power generation, heat supply or heating the rotary furnace. The crushed block material is continuously fed into an oxygen-free rotary furnace at 500°C to decompose the plastic into synthetic gas. The temperature needs to be controlled by an external temperature control system.

[0041] Furnace temperature: The temperature fluctuation range should be controlled within ±10-20℃ to ensure the efficiency and stability of plastic decomposition.

[0042] Environment: oxygen-free environment, inert gas such as nitrogen can be used for injection protection along with the material.

[0043] Pyrolysis time: According to the feeding amount of block material, the feeding formula is: Wherein, S represents the pyrolysis time, Tw represents the feeding quantity range, and a is the correction coefficient of the block material affected by the particle size.

[0044] Secondary purification treatment, through the secondary rotary kiln to purify the glass fiber material under the condition of the presence of atmosphere, use magnets to remove and recover metals, remove dust from the remaining glass fiber material, and obtain a relatively pure glass fiber material. During the anaerobic pyrolysis process, the amount of NOx released can be calculated based on the unit coal consumption NO x The precipitation amount and coal consumption during pyrolysis are calculated, as shown in the formula QNO x = k × CNO x / coal×Mcoal, where QNO x Represents NO in the anaerobic pyrolysis process x The total precipitation amount; k is a correction factor, which is the influence of other substances in the block material and pyrolysis conditions on the NOx precipitation amount; CNO x / coal represents NO per unit coal consumption xThe amount of NO released is the amount of NO produced by consuming a certain amount of coal. x Amount; Mcoal represents the coal consumption in the pyrolysis process, that is, the amount of coal actually consumed in the anaerobic pyrolysis process.

[0045] After receiving the glass fiber material in bulk after pyrolysis, the secondary rotary kiln purification injects an appropriate amount of air to maintain the condition of atmospheric existence in the furnace. The air intake can be adjusted according to the processing volume and purification effect of the glass fiber material; the temperature in the furnace is controlled between 400-600℃, and the material stays in the furnace for 3 hours; a magnet device with a magnetic strength of Gauss is selected to ensure effective adsorption of metal impurities in the glass fiber material. The installation position and quantity of the magnet device should be designed and assembled according to the material transportation situation and metal content.

[0046] Waste flue gas treatment: the waste flue gas generated by incineration is treated by a dust collector and then discharged into the atmosphere. According to the nature of the waste flue gas and the emission standard, a suitable dust collector, such as an electrostatic dust collector or a bag dust collector, is selected. When the waste flue gas has a high dust concentration, a bag dust collector with a higher dust removal efficiency is selected, and its filtration wind speed is 0.8-1.2 m / min. After the waste flue gas is treated, the particle emission concentration should be lower than the relevant national environmental protection standards, and the sulfur dioxide and nitrogen oxide emission concentrations must also meet the corresponding emission standards.

[0047] Embodiment 2: This embodiment is a device for regenerating and recycling glass fiber from waste fan blades, comprising an oxygen-free rotary furnace including an oxygen-free furnace body 1, an inner rotary furnace body 6 is arranged inside the oxygen-free furnace body 1, and a ventilation rack 3 and a drive assembly 5 are arranged on the outer wall of the oxygen-free furnace body 1, a stirring blade 602 is arranged on the inner wall of the inner rotary furnace body 6, and a feed end cover 2 and a discharge end cover 4 are respectively arranged at both ends of the inner rotary furnace body 6.

[0048] A ring frame 102 is arranged in the middle of the inner wall of the oxygen-free furnace body 1, and spiral guide vanes 101 are symmetrically arranged at both ends of the ring frame 102. After the hot gas discharged after pyrolysis is purified, part of the high-temperature hot gas is guided by pipes and connected to the air intake valve. The high-temperature airflow is injected into the cavity between the spiral guide vanes 101 close to the oxygen-free furnace body 1 and the end surface area of ​​the inner converter body 6 along the air intake valve. The spiral guide vanes 101 divide the cavity into a spiral shape, and the high-temperature airflow flows along the cavity toward the ring frame 102, and is discharged along the air outlet valve in the area of ​​the ring frame 102, and is then guided to the waste flue gas treatment equipment through pipes.

[0049] Inlet valves are symmetrically arranged at both ends of the outer wall of the ventilation rack 3, and the interior of the air intake valve extends to the installation area of ​​the spiral guide vane 101. Multiple sets of exhaust valves are symmetrically arranged in the middle of the outer wall of the ventilation rack 3, and the interior of the exhaust valve extends to both ends of the ring frame 102. When the block material is fed into the oxygen-free rotary furnace, the block material is first transported to the feed pipe 202 through an external conveying device, and the opening and closing of the feed pipe 202 close to the oxygen-free furnace body 1 is controlled by the valve to inject a certain amount of block material into the inner rotary furnace body 6. The outside of the air intake pipe 201 is connected to the heating system through a valve to guide the heat source airflow into the inner rotary furnace body 6.

[0050] Sealing rings 601 are symmetrically arranged at both ends of the inner converter body 6 , a convex ring is arranged on the inner wall of the sealing ring 601 , and stirring blades 602 are staggeredly arranged on the inner wall of the inner converter body 6 .

[0051] Embodiment 3: This embodiment is a device for regenerating and recycling glass fiber from waste fan blades, including a feed end cover 2 with an annular baffle 203 provided at one end close to the inner converter body 6, an air intake duct 201 penetrating the annular baffle 203 is provided in the middle of the feed end cover 2, and a feed duct 202 penetrating the annular baffle 203 is provided at an angle on the top of the feed end cover 2.

[0052] The end of the discharge end cover 4 close to the inner converter body 6 is provided with a second annular baffle plate 403, the top of the second annular baffle plate 403 is penetrated with an exhaust mesh port 404, and the middle of the outer wall of the discharge end cover 4 is penetrated with an exhaust pipe 401 connected to the exhaust mesh port 404. During the period when the block material is continuously pyrolyzed at high temperature inside the inner converter body 6, the gas generated by the pyrolysis of the block material overflows along the exhaust mesh port 404 and is collected inside the discharge end cover 4;

[0053] In this state, the air inlet pipe 201 continuously injects hot air into the inner converter body 6, causing the gases retained in the inner converter body 6 and generated by pyrolysis to continuously flow into the discharge end cover 4, thereby achieving continuous replacement of the gas and heat inside the inner converter body 6 and avoiding interference with the block material after pyrolysis. The feed pipe 202 and the discharge pipe 402 are both in a closed state, causing the exhaust gas flow to be discharged along the outlet pipe 401.

[0054] A sealing plate 405 is hinged on the bottom plate of the annular partition plate 403. A telescopic cylinder 406 connected to the inner wall of the top of the discharge end cover 4 is arranged on the outer wall of the sealing plate 405. A discharge pipe 402 close to the bottom of the sealing plate 405 is arranged at the bottom of the discharge end cover 4. When the pyrolysis of the batch of block materials is completed, the air inlet pipe 201 is closed, and the rotation direction of the inner converter body 6 is adjusted by the driving component 5, so that the inner converter body 6 cleans the block materials after pyrolysis near the annular partition plate 403 by rotation. The telescopic cylinder 406 contracts and drives the sealing plate 405 to rotate along the hinge point, so that the accumulated block materials flow into the bottom of the discharge end cover 4 under continuous pushing, and are discharged along the discharge pipe 402. After being collected by external equipment, they are sent to the secondary rotary kiln for subsequent processing.

[0055] The driving assembly 5 includes a main ring sleeve 501 and a secondary ring sleeve 502, which are symmetrically sleeved on both ends of the oxygen-free furnace body 1 and the inner converter body 6. A support body is provided on the inner sleeve wall of the main ring sleeve 501, and a chute 1 503 connected to the oxygen-free furnace body 1 is provided at one end of the support body, and a chute 2 505 connected to the inner converter body 6 and the discharge end cover 4 is provided at the other end of the support body. A traction chain 504 connected to the inner converter body 6 is provided inside the support body, and a driving motor 506 connected to the traction chain 504 is provided at the bottom of the main ring sleeve 501;

[0056] The driving motor 506 is started, and the driving motor 506 is connected to the traction chain 504 through a coupling, a reducer and related accessories. The traction chain 504 rotates along the inside of the support body, and the bottom of the traction chain 504 is connected to the part of the inner converter body 6 that is sleeved on the inner wall of the support body, and is rotated by its rotation. When the inner converter body 6 rotates inside the oxygen-free furnace body 1, the stirring blade 602 is used to drive the block material to rotate and roll along the inside of the inner converter body 6, and is affected by the bending angle of the stirring blade 602, so that the block material is rotated according to the inner converter body 6. At the same time, the rotating block material is affected by the rotation direction of the inner converter body 6, so that the block material rolls and gathers step by step in different directions in the inner converter body 6, so as to achieve uniform mixing, heating and rotating discharge of the block material.

[0057] During the rotation of the inner converter body 6, the main ring sleeve 501 and the auxiliary ring sleeve 502 are connected to the outer walls of the oxygen-free furnace body 1 at both ends through the slide groove 1 503, the bottom of the slide groove 2 505 is rotatably connected to the sealing ring 601, and the top of the slide groove 2 505 is connected to the discharge end cover 4 and the feed end cover 2.

[0058] In combination with Example 1, Example 2 and Example 3, the waste fan blades can be treated by physical step-by-step decomposition and pyrolysis, and the pyrolysis efficiency can be improved by using the stirring blades 602 to avoid local uneven heating and material damage; and by continuously injecting hot air and regulating the rotation of the inner converter body 6, gas and heat replacement can be achieved to avoid secondary pollution and improve energy utilization efficiency. The operation process has a high degree of automation and reduces manual intervention.

[0059] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for regenerating and recovering glass fiber from waste fan blades, characterized in that: The following steps are involved: Waste pretreatment: Use hydraulic shears to cut the used fan blades into small pieces for transportation on site. The small pieces transported to the factory are further crushed into palm-sized pieces. Heat treatment in the furnace, the block material is continuously fed into an oxygen-free rotary furnace at 500°C to decompose the plastic into synthetic gas, which can be used for power generation, heat supply or heating the rotary furnace; Secondary purification treatment: purifying the glass fiber material in the presence of air through a secondary rotary kiln, removing and recovering metals using magnets, removing dust from the remaining glass fiber material, and obtaining a relatively pure glass fiber material; Waste flue gas treatment: the waste flue gas generated by incineration is treated by a dust collector and then discharged into the atmosphere.

2. A device for regenerating and recovering glass fiber from waste fan blades, used in the method for regenerating and recovering glass fiber from waste fan blades as claimed in claim 1, characterized in that: The oxygen-free rotary furnace comprises an oxygen-free furnace body (1), an inner rotary furnace body (6) is arranged inside the oxygen-free furnace body (1), a ventilation frame (3) and a drive assembly (5) are arranged on the outer wall of the oxygen-free furnace body (1), a stirring blade (602) is arranged on the inner wall of the inner rotary furnace body (6), and a feed end cover (2) and a discharge end cover (4) are respectively arranged at both ends of the inner rotary furnace body (6).

3. The method for regenerating and recovering glass fiber from waste fan blades according to claim 2, characterized in that: A ring frame (102) is arranged in the middle of the inner wall of the oxygen-free furnace body (1), and spiral guide vanes (101) are symmetrically arranged at both ends of the ring frame (102).

4. The method for regenerating and recovering glass fiber from waste fan blades according to claim 3, characterized in that: Intake valves are symmetrically arranged at both ends of the outer wall of the ventilation frame (3), and the interior of the intake valves extends to the installation area of ​​the spiral guide vane (101); multiple groups of exhaust valves are symmetrically arranged in the middle of the outer wall of the ventilation frame (3), and the interior of the exhaust valves extends to both ends of the ring frame (102).

5. The method for regenerating and recovering glass fiber from waste fan blades according to claim 4, characterized in that: Sealing rings (601) are symmetrically arranged at both ends of the inner converter body (6), a convex ring is arranged on the inner wall of the sealing ring (601), and the stirring blades (602) are staggeredly arranged on the inner wall of the inner converter body (6).

6. The method for regenerating and recovering glass fiber from waste fan blades according to claim 2, characterized in that: An annular baffle plate 1 (203) is arranged at one end of the feed end cover (2) close to the inner converter body (6), an air intake pipe (201) penetrating the annular baffle plate 1 (203) is arranged in the middle of the feed end cover (2), and a feed pipe (202) penetrating the annular baffle plate 1 (203) is arranged obliquely at the top of the feed end cover (2).

7. The method for regenerating and recovering glass fiber from waste fan blades according to claim 2, characterized in that: A second annular baffle plate (403) is provided at one end of the discharge end cover (4) close to the inner converter body (6), an exhaust mesh port (404) is provided through the top of the second annular baffle plate (403), and an exhaust pipe (401) connected to the exhaust mesh port (404) is provided through the middle of the outer wall of the discharge end cover (4).

8. The method for regenerating and recovering glass fiber from waste fan blades according to claim 7, characterized in that: A sealing plate (405) is hingedly connected to the bottom plate of the annular partition plate 2 (403), a telescopic cylinder (406) connected to the inner wall of the top of the discharge end cover (4) is arranged on the outer wall of the sealing plate (405), and a discharge pipe (402) close to the bottom of the sealing plate (405) is arranged at the bottom of the discharge end cover (4).

9. The method for regenerating and recovering glass fiber from waste fan blades according to claim 2, characterized in that: The driving assembly (5) comprises a main ring sleeve (501) and a secondary ring sleeve (502), wherein the main ring sleeve (501) and the secondary ring sleeve (502) are symmetrically sleeved on two ends of the oxygen-free furnace body (1) and the inner converter body (6), and a support body is arranged on the inner sleeve wall of the main ring sleeve (501).

10. The method for regenerating and recovering glass fiber from waste fan blades according to claim 9, characterized in that: One end of the support body is provided with a slide groove 1 (503) connected to the oxygen-free furnace body (1), and the other end of the support body is provided with a slide groove 2 (505) connected to the inner converter body (6) and the discharge end cover (4). A traction chain (504) connected to the inner converter body (6) is provided inside the support body, and a driving motor (506) connected to the traction chain (504) is provided at the bottom of the main ring sleeve (501).

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