Waste photovoltaic panel recovery device

Abstract

The utility model relates to the technical field of waste photovoltaic panel recycling, in particular to a waste photovoltaic panel recycling device which comprises an automatic feeding device, and the output end of the automatic feeding device is sequentially provided with a 3D vision device, a glue removing box device, a frame removing device, a back plate removing device and a back glue processing device through a feeding device. The automatic feeding device adopts a mechanical arm feeding device, the back glue processing device comprises a feeding device arranged at the output end of the back plate removing device, the output end of the feeding device is provided with a conveying device used for flatly conveying photovoltaic panels, a combustion device is arranged above the conveying device, and the back glue processing device is arranged above the combustion device. The combustion device comprises a plurality of combustors which are arranged along the conveying direction of the conveying device and are used for spraying flames, the working part of the conveying device is provided with a smoke dust collecting device, the tail end of the conveying device is provided with a collecting device, and the recovery purity and the recovery value of the glass are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste photovoltaic panel recycling, and particularly relates to a waste photovoltaic panel recycling device. Background Technique

[0002] With the continuous reduction of the average power generation cost of photovoltaic and the increasing pressure of energy conservation and emission reduction in China, the installed capacity of components in China will surely increase year by year. The domestic solar energy application has formed an agglomeration scale effect. As the early-invested photovoltaic components have reached their service life, a large number of photovoltaic components are facing retirement, and more and more waste components will be generated.

[0003] Most of the existing photovoltaic panel processing equipment adopts physical crushing treatment devices. During the physical crushing process, the photovoltaic panel needs to undergo large external forces such as extrusion, twisting, vibration, and tearing, resulting in the internal silicon wafers of the board being broken due to the external forces. However, the products after physical crushing have the problems that silicon is in a granular or powdery state, with low purity and difficult to separate. Especially after removing the backplane, due to the large viscosity of the back glue, the treatment is incomplete, affecting the recycling effect. Therefore, this technical solution is specifically proposed for improvement. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiency of low purity and poor recycling effect in the process of recycling waste photovoltaic panels in the prior art, and provide a waste photovoltaic panel recycling device.

[0005] In order to achieve the above purpose, the embodiment of the utility model specifically adopts the following technical solutions: A waste photovoltaic panel recycling device includes an automatic feeding device. The output end of the automatic feeding device is sequentially provided with a 3D vision device, a glue removing box device, a frame removing device, a backplane removing device, and a back glue treatment device through a feeding device. The automatic feeding device adopts a robotic arm feeding device. The back glue treatment device includes a feeding device arranged at the output end of the backplane removing device. The output end of the feeding device is provided with a conveying device for flatly conveying the photovoltaic panel. A combustion device is arranged above the conveying device. The combustion device includes a plurality of burners for spraying flames arranged along the conveying direction of the conveying device. A dust collection device is arranged at the working part of the conveying device, and a collection device is arranged at the end of the conveying device.

[0006] Further, the 3D vision device adopts a 3D vision camera positioning device, and the glue removing box device adopts a scraper removing device.

[0007] Further, the conveying device is two parallel conveyor belts, and heat-resistant protection plates are arranged on the sides of the conveyor belts.

[0008] Further, the combustion device includes a fuel pipe arranged along the length direction of the conveyor belt, and a plurality of branch pipes are arranged on the side of the fuel pipe and connected to the burners.

[0009] Further, electric valves for controlling the flame combustion amount are arranged on the branch pipes.

[0010] Further, the soot collection device includes a lower collection pipe arranged between the two conveyor belts, an upper collection pipe is arranged above the conveyor belt, a collection hood is arranged at the input end of the upper collection pipe, and the upper collection pipe and the lower collection pipe are communicated with a soot combustion chamber and a cooling tower through pipelines.

[0011] Further, the collection device includes a cooling fan arranged at the tail of the conveying device for cooling.

[0012] The beneficial effects of the embodiments of the present utility model are as follows: After removing the glue box, frame and backplane from the waste photovoltaic panel, the combustion device is used to burn the back glue, so that the photovoltaic panel is intact. A main fuel pipe is arranged along the length direction of the conveyor belt in the combustion device, and natural gas is used as the fuel, meeting the environmental protection requirements after combustion, with fewer by-products, convenient control. The fuel pipe is connected to the uniformly distributed burners through a plurality of branch pipes. The temperature of the photovoltaic panel is raised to about 500 degrees by flame combustion, ensuring that the back glue on the back side of the photovoltaic panel is quickly decomposed at high temperature. After combustion, the back glue on the back of the photovoltaic panel has been completely burned out. After cooling, the material only remains glass, silicon wafers and solder strips, and then it can enter the next sorting process. Compared with the traditional physical crushing method, such as peeling, extrusion, milling of glass, the obtained glass and silicon wafers are relatively complete and pure, and the original size of the silicon wafers is maintained as much as possible, improving the recovery purity and value of the glass, and at the same time providing convenience for the subsequent silver extraction process. Description of the Drawings

[0013] Figure 1 is the overall structural schematic diagram of the present utility model;

[0014] Figure 2 is the overall structural schematic diagram of the back glue removing device of the present utility model;

[0015] Figure 3 is the top view structural schematic diagram of the back glue removing device of the present utility model;

[0016] Figure 4 is the enlarged structural schematic diagram at A of the present utility model;

[0017] In the figure: 1. Loading device; 2. Conveyor belt; 201. Protective plate; 3. Burner; 301. Fuel pipe; 302. Branch pipe; 303. Electric valve; 4. Upper collection pipe; 401. Smoke combustion chamber; 402. Cooling tower; 5. Collection device; 6. Backplate removing device; 7. Frame removing device; 8. Glue box removing device; 9. 3D vision device; 10. Automatic feeding device. Specific embodiments

[0018] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0019] See Figures 1 to 4 , an embodiment of the present invention discloses a waste photovoltaic panel recycling device, which mainly includes an automatic feeding device 10. The output end of the automatic feeding device 10 is sequentially provided with a 3D vision device 9, a glue box removing device 8, a frame removing device 7, a backplate removing device 6 and a back glue treatment device through a feeding device. The automatic feeding device 10 uses a robotic arm for feeding. During use, workers use a forklift to stack waste photovoltaic panels at a designated grasping point. The robotic arm can grasp them one by one and place the waste photovoltaic panels on the front conveyor belt in sequence. Then the photovoltaic panel flows through the 3D vision device 9, and the external dimensions are identified and the position of the glue box is judged through a vision camera. Then this information is applied to all devices on the whole line. After the dimensions of the photovoltaic panel are identified, it will successively undergo the processes of removing the glue box and the frame, and then the backplate removing process. The main purpose of removing the backplate is to physically remove the fluorine-containing backplate to prevent harmful substances from being generated by the backplate of the photovoltaic panel at high temperature and polluting the environment. The glue box removing device 8 adopts the publication number CN220461701U (a photovoltaic panel grasping and glue box removing mechanism), the frame removing device 7 adopts the publication number CN219882373U (a photovoltaic panel edge removing device), and the backplate removing device 6 adopts the publication number CN219648158U. The above documents are all published documents and are cited here.

[0020] After the backplate is removed, there will be residual back glue on the back side of the photovoltaic panel, and a back glue treatment device is used to process it. The back glue treatment device mainly consists of a loading device 1, a conveying device, a combustion device, a smoke and dust collection device 5 and a collection device 5.

[0021] First, the waste photovoltaic panels are fed into the system by the feeding device 1 after removing the backplane. The feeding device 1 uses automated devices such as robotic arms or conveyor belts to ensure that the photovoltaic panels after removing the glue box, aluminum frame, and backplane enter the conveying device smoothly and continuously with the back side facing up. The conveying device uses two parallel high-temperature resistant conveyor belts 2, which can be chain conveyor belts 2 or plate conveyor belts 2. Each conveyor belt 2 has a moderate width to stably carry the photovoltaic panels and prevent them from slipping. During use, while ensuring the conveying effect, it also prevents the high temperature from burning the conveyor belt 2, ensuring the use effect. Protective plates 201 for preventing high-temperature overflow are installed on both sides of the conveyor belt 2, which not only protects the conveyor belt 2 from direct flame burning but also prevents heat dissipation from affecting the surrounding environment.

[0022] The combustion device is provided with a main fuel pipe 301 along the length direction of the conveyor belt 2. The fuel used is natural gas, which meets the environmental protection requirements after combustion, has fewer by-products, and is convenient to control. The fuel pipe 301 is connected to evenly distributed burners 3 through multiple branch pipes 302. These burners 3 can precisely control the spraying direction and intensity of the flame, raising the temperature of the photovoltaic panels to about 500 degrees to ensure that the back glue on the back side of the photovoltaic panels decomposes rapidly at high temperature. To further improve the treatment effect, electric valves 303 are installed on each branch pipe 302. By remotely adjusting the opening degree of the electric valves 303, the flame combustion amount of each burner 3 can be flexibly controlled, realizing precise adjustment of the flame intensity. In this way, it can not only ensure the full combustion of the back glue but also avoid damage to other parts of the photovoltaic panels caused by overheating.

[0023] During the combustion process, a certain amount of soot and harmful gases are generated. To protect the environment, a soot collection device 5 is also installed on the conveying part of the conveyor belt 2, including a lower collection pipe arranged between the two conveyor belts 2 and an upper collection pipe 4 located above the conveyor belt 2. The lower collection pipe is arranged below the conveyor belt 2, and the soot sinking during the burning of the photovoltaic panels is collected through the lower collection pipe. The input end of the upper collection pipe 4 is equipped with a collection hood, which can effectively capture the rising soot, greatly reducing the soot overflow during the combustion process. The upper collection pipe 4 and the lower collection pipe are connected to the soot combustion chamber 401 and the cooling tower 402 through pipelines to form a closed-loop treatment process. The soot first enters the soot combustion chamber 401 for secondary combustion treatment to further reduce the content of harmful substances. Subsequently, the treated flue gas enters the cooling tower 402 for cooling, temperature reduction, and purification treatment, and finally discharges the tail gas meeting the environmental protection standards.

[0024] The photovoltaic panels after combustion treatment enter the collection device 5. The collection device 5 is equipped with a cooling fan, which quickly cools the photovoltaic panels by blowing cold air to ensure that they reach a safe temperature before entering the subsequent recycling process. During use, through the combustion and collection technology on the back side of waste photovoltaic panels, efficient and clean treatment of the back glue on the back side of waste photovoltaic panels is achieved. This not only improves the recycling efficiency of silicon materials but also reduces the environmental pollution risk during the treatment process. After combustion, the back glue on the back of the photovoltaic panel has been completely burned out. After cooling, the materials only remain glass, silicon wafers, and solder tapes, and then they can enter the next sorting process. Compared with the methods of peeling, extruding, and milling glass in the traditional physical crushing method, the obtained glass and silicon wafers are relatively complete and pure, improving the recycling purity and value of the glass, maintaining the original size of the silicon wafers as much as possible, and also providing convenience for the subsequent silver extraction process.

[0025] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, article, or device / equipment including a series of elements not only includes those elements but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, articles, or devices / equipment.

[0028] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. A waste photovoltaic panel recycling device, characterized in that: The invention comprises an automatic feeding device (10), wherein the output end of the automatic feeding device (10) is provided with a 3D vision device (9), a glue box removal device (8), a frame removal device (7), a backboard removal device (6) and a back glue processing device in sequence through the feeding device, wherein the automatic feeding device (10) adopts a mechanical arm loading device (1), wherein the back glue processing device comprises a loading device (1) arranged at the output end of the backboard removal device (6), wherein the output end of the loading device (1) is provided with a conveying device for flatly conveying photovoltaic panels, wherein a combustion device is arranged above the conveying device, wherein the combustion device comprises a plurality of burners (3) for spraying flames arranged along the conveying direction of the conveying device, wherein a smoke collecting device (5) is arranged at the working part of the conveying device, and wherein a collecting device (5) is arranged at the end of the conveying device.

2. The waste photovoltaic panel recycling device according to claim 1 is characterized in that: The 3D vision device (9) adopts a 3D vision camera positioning device, and the degumming box device (8) adopts a scraper removal device.

3. The waste photovoltaic panel recycling device according to claim 1 is characterized in that: The conveying device is two parallel conveyor belts (2), and the sides of the conveyor belts (2) are provided with protective plates (201) for preventing high temperatures.

4. The waste photovoltaic panel recycling device according to claim 3 is characterized in that: The combustion device comprises a fuel pipe (301) arranged along the length direction of the conveyor belt (2), and a plurality of branch pipes (302) are arranged on the side of the fuel pipe (301) and connected to the burner (3).

5. The waste photovoltaic panel recycling device according to claim 4 is characterized in that: The branch pipes (302) are each provided with an electric valve (303) for controlling the amount of flame combustion.

6. The waste photovoltaic panel recycling device according to claim 3 is characterized in that: The smoke collecting device (5) comprises a lower collecting pipe arranged between two conveyor belts (2), an upper collecting pipe (4) is arranged above the conveyor belt (2), a collecting hood is arranged at the input end of the upper collecting pipe (4), and the upper collecting pipe (4) and the lower collecting pipe are connected to a smoke combustion chamber (401) and a cooling tower (402) through a pipeline.

7. The waste photovoltaic panel recycling device according to claim 1, characterized in that: The collecting device (5) comprises a cooling fan arranged at the rear of the conveying device for cooling.

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