Backsheet waste collection device for photovoltaic module recycling and photovoltaic module recycling apparatus

Abstract

The application discloses a backboard waste collecting device for photovoltaic module recycling and photovoltaic module recycling equipment. The backboard waste collecting device comprises a negative pressure adsorption unit and a leakage receiving unit. The negative pressure adsorption unit is located above the discharge port of a backboard removing mechanism. The leakage receiving unit is used for receiving the waste generated by grinding and / or roll grinding of the backboard removing mechanism. The negative pressure adsorption unit comprises an adsorption hopper and a separator. In one aspect, a lateral negative pressure adsorption port is opened at the hopper nozzle to form a transverse negative pressure suction force, an adsorption area is added on the module transmission path, and the dust collection effect is significantly improved and the air quality is improved. In another aspect, the photovoltaic module surface residual waste is collected by cooperation of the spade cutting edge and the negative pressure. The waste residual rate is greatly reduced, manual intervention for secondary cleaning and collection is not needed, the recycling efficiency is effectively improved, the spade cutting stress can effectively assist the smooth cutting and horizontal transmission of the photovoltaic module, and the damage rate of the battery piece is reduced.

Description

Technical Field

[0001] This invention belongs to the field of environmental protection technology, specifically relating to a backsheet waste collection device for photovoltaic module recycling, and also to a photovoltaic module recycling equipment. Background Technology

[0002] A photovoltaic (PV) module is a power generation device that generates direct current (DC) electricity when exposed to sunlight. It consists of thin, solid-state photovoltaic cells made almost entirely of semiconductor materials (such as silicon). More than 90% of these materials can be recycled and reused. As their lifespan is limited, retired PV modules generally require solid waste recycling to achieve resource recycling. This not only alleviates the shortage of raw materials for PV equipment to some extent but also effectively reduces environmental pollution (i.e., recycling the solar cells from solid waste into useful raw materials to achieve resource recycling, while also effectively carrying out environmental governance and protecting the environment).

[0003] The backsheet layer of a photovoltaic module mainly consists of a PET base film, an outer fluorine film formed on the front and back of the PET base film by adhesives, and an inner and outer fluorine film. Removal and recycling of the backsheet layer in a photovoltaic module primarily relies on wet or dry physical cutting methods (such as grinding, rolling, and cutting). For dry removal, the photovoltaic module is typically transported horizontally with the backsheet layer facing upwards into the backsheet removal station. A rolling cutter mechanism positioned above this station continuously cuts and peels off the backsheet layer. The resulting backsheet debris falls under gravity into a waste collection tank below the station for centralized collection. Simultaneously, to suppress backsheet dust generated during cutting and improve backsheet recovery rate, a negative pressure suction device and a dust collector are usually arranged above the discharge port near the backsheet removal station. The suction port of the negative pressure suction device faces downwards and directly towards the cut surface of the photovoltaic module, simultaneously sucking up the dust-laden airflow generated during cutting and filtering it through the dust collector before discharge.

[0004] However, in actual recycling processes, the negative pressure suction devices used in existing technologies create a negative pressure adsorption force perpendicular to the surface of the photovoltaic modules. This not only easily causes the cut parts of the photovoltaic modules to warp upwards, interfering with the movement of the uncut parts, affecting the backsheet cutting accuracy, and even damaging the cells; but also, under the vertical negative pressure adsorption force, the adsorption range is limited, and the dust generated during cutting easily spreads outwards, affecting the workshop environment. At the same time, the large strips or blocks of debris generated during cutting easily fall onto the surface of the cells and adhere, making it difficult to detach from the cell surface under the negative pressure adsorption force. This requires manual intervention for secondary cleaning and collection, which not only increases the difficulty and cost of waste collection but also results in low module recycling efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an improved backsheet waste collection device for photovoltaic module recycling.

[0006] In addition, a photovoltaic module recycling device is also provided.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A backsheet waste collection device for photovoltaic module recycling includes a negative pressure adsorption unit and a leakage collection unit. The negative pressure adsorption unit is located above the discharge port of the backsheet removal mechanism, and the leakage collection unit is used to collect the waste generated by the backsheet removal mechanism. The negative pressure adsorption unit includes an adsorption hopper and a separator connected to the adsorption hopper. The adsorption hopper includes a hopper body and a nozzle. The nozzle extends along the width direction of the photovoltaic module, and a shoveling part with a shoveling blade is formed at the bottom of the nozzle facing the discharge port of the backsheet removal mechanism. A negative pressure adsorption port extending along the length direction of the nozzle is opened above the side where the shoveling part is located. The negative pressure adsorption port is oriented parallel to or obliquely downward with the surface of the photovoltaic module. The shoveling blade is located inside the negative pressure adsorption port, and the residual waste on the surface of the photovoltaic module is shoveled and collected based on the negative pressure inside the hopper body and the cooperation of the shoveling blade.

[0008] According to a specific embodiment and preferred aspect of the present invention, the nozzle includes a bottom plate, an end plate and a side plate, wherein a shovel portion is formed on the side of the bottom plate near the discharge port of the back plate removal mechanism, and a negative pressure adsorption port is formed at the lower end of the side plate near the discharge port of the back plate removal mechanism and spaced apart from the bottom plate.

[0009] Preferably, the base plate extends horizontally, and during scraping, the base plate remains attached to and presses down on the scraped surface of the photovoltaic module from the bottom surface. Here, based on the flattening effect of the base plate, the photovoltaic module is prevented from warping upward due to the force of the scraping blade.

[0010] According to another specific embodiment and preferred aspect of the present invention, the adsorption bucket further includes a combing tool, wherein the combing tool comprises a plurality of combing blades spaced apart along the length direction of the negative pressure adsorption port inside the shoveling section. Each combing blade has a combing cutting edge facing the negative pressure adsorption port, and each combing cutting edge extends from bottom to top. Based on the negative pressure formed inside the bucket body, the shoveling section and the combing blades cooperate to shovel and comb the residual waste on the surface of the photovoltaic module. Here, considering that the residual waste on the module surface is prone to entanglement and aggregation under shoveling stress and negative pressure, causing blockage and creating biased stress on the adsorption bucket in the opposite direction, the cooperation between the shoveling section and the combing blades to shovel and comb the residual waste on the module surface not only breaks down the shoveled waste to avoid the formation of large-volume, large-mass aggregates, facilitating absorption and aggregation, reducing the probability of blockage, and improving the reliability and stability of the adsorption bucket, but also, combined with the shoveling and combing stress, can further effectively assist in the smooth cutting and horizontal transmission of the photovoltaic module, reducing the damage rate of the cells.

[0011] Preferably, each combing blade is inclined vertically and intersects with the shoveling section from its lower end; and / or, the shoveling section has an upper cutting surface extending obliquely upward from the shoveling blade, and each combing blade extends upward along the upper cutting surface of the shoveling section. Here, based on the fact that the combing blades extend along the upper cutting surface of the shoveling section, the continuity of shoveling and combing is improved, and the waste material can be combed in time when it is shoveled up, which can greatly reduce the probability of waste material entanglement and agglomeration, thereby reducing the difficulty of combing and making it more conducive to negative pressure adsorption.

[0012] Preferably, the horizontal cross-section of each combing blade is an isosceles triangle with the combing blade edge as the apex; and / or, each combing blade extends obliquely from bottom to top and away from the negative pressure adsorption port; and / or, in the orthographic projection on the horizontal plane, each combing blade edge is perpendicular to the scraping blade edge. This not only facilitates the uniform combing of waste material to both sides, but also enables the uniform distribution of the airflow generated by the negative pressure, ensuring that waste material between adjacent combing blades is absorbed and collected, avoiding adsorption dead zones.

[0013] Preferably, the top edge of the negative pressure adsorption port is lower than the upper end of each combing blade. Here, after the waste material is sucked into the negative pressure adsorption port, it is precisely combed by the combing blade to ensure the breaking rate.

[0014] According to another specific embodiment and preferred aspect of the invention, the bottom of the bucket body forms a lower open opening communicating with the nozzle, and the top forms an upper open opening communicating with the separator, and the volume of the inner cavity formed by the bucket body gradually decreases from top to bottom. Here, based on the change in the inner cavity volume, the airflow velocity inside the nozzle is increased, thereby increasing the impact force between the waste material and the combing blades, and improving the combing effect of the combing blades.

[0015] Preferably, the lower opening is a square opening extending along the length of the spout; the upper opening is a circular opening, wherein the center of the square opening and the center of the circular opening are aligned vertically, and the diameter of the circular opening is greater than the width of the square opening and less than the length of the square opening.

[0016] Furthermore, the leakage receiving unit includes a receiving section that is vertically inclined and positioned directly below the backsheet removal mechanism, a guiding section that slopes downwards from the lower side of the receiving section, and a discharge section that connects to the lower side of the guiding section. The guiding section and / or the discharge section are located directly below the negative pressure adsorption unit to receive the waste material dropped by the scraping mechanism. This system can receive not only the backsheet fragments cut off by the backsheet removal mechanism but also large particles of waste material dropped from the surface of the photovoltaic modules after the scraping section has removed residual waste, thus preventing some waste particles from being too large or heavy to be successfully absorbed.

[0017] Another technical solution of the present invention is a photovoltaic module recycling device, which includes the aforementioned backsheet waste collection device.

[0018] Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art: The negative pressure suction device used in existing technologies creates a negative pressure adsorption force perpendicular to the surface of the photovoltaic module. This not only easily causes the cut parts of the photovoltaic module to warp upwards, interfering with the movement of the uncut parts, affecting the cutting accuracy of the backsheet, and even damaging the cells; but also, the adsorption range formed under the vertical negative pressure adsorption force is limited, and the dust generated during cutting easily spreads outward, affecting the workshop environment. At the same time, the large strips or blocks of debris generated during cutting easily fall onto the surface of the cells and adhere, making it difficult to detach from the surface of the cells under the negative pressure adsorption force. This requires manual intervention for secondary cleaning and collection, which not only increases the difficulty and cost of waste collection, but also results in low recycling efficiency of the modules. This application provides an overall structural design for a backsheet waste collection device for photovoltaic module recycling, cleverly addressing the shortcomings and defects of existing technologies. With this backsheet waste collection device, the photovoltaic module enters the backsheet removal mechanism for grinding and / or rolling removal of the backsheet. The backsheet waste that falls off is collected by a leakage collection unit. As the photovoltaic module is conveyed to the discharge port of the backsheet removal mechanism, a negative pressure is created inside the hopper. This creates a lateral suction negative pressure at the negative pressure adsorption port located above the shovel section on the side of the hopper facing the discharge port. The shovel section formed at the bottom of the hopper facing the discharge port, in cooperation with the negative pressure inside the hopper, scrapes and collects the residual waste from the surface of the photovoltaic module. Therefore, compared with the prior art, the present invention has three main advantages. First, it utilizes a lateral negative pressure adsorption port created by the nozzle to form a lateral negative pressure suction force, increasing the adsorption area along the component transport path, significantly improving dust collection efficiency and air quality. Second, it uses the cooperation of the shovel blade and negative pressure to shovel and collect residual waste from the photovoltaic module surface, which not only significantly reduces the waste residue rate and eliminates the need for secondary cleaning and collection, effectively improving recycling efficiency, but also, combined with the shovel stress, effectively assists in the smooth cutting and horizontal transport of the photovoltaic module, reducing the damage rate of the cells. Third, the cooperation between the shovel and the combing blade to shovel and comb residual waste from the module surface not only breaks down the shoveled waste to avoid forming large-volume, high-mass aggregates, facilitating suction and collection, reducing the probability of blockage, and improving efficiency. The adsorption bucket ensures reliability and stability, and the combined scraping and combing stress further assists in the smooth cutting and horizontal transmission of photovoltaic modules, reducing cell damage rate. Fourthly, the combing blades extend along the upper surface of the scraping section, improving the continuity of scraping and combing. When scraping up waste, the combing blades can comb it in time, greatly reducing the probability of waste entanglement and clumping, thus reducing the difficulty of combing and facilitating negative pressure adsorption. Fifthly, the structural design of the combing blades not only facilitates the uniform combing of waste to both sides, but also uniformly distributes the airflow generated by negative pressure, ensuring that the waste between adjacent combing blades is absorbed and collected, avoiding adsorption dead zones. Sixthly, the flattening and bonding of the base plate prevents the photovoltaic modules from warping upwards due to the force of the scraping blades.Seventhly, based on the change in the internal volume of the bucket, the airflow velocity inside the bucket mouth is increased, thereby increasing the impact force between the waste and the combing blades and improving the combing effect of the combing blades; Eighthly, it can not only receive the backsheet fragments cut off by the backsheet removal mechanism, but also receive the large particles of waste dropped by the scraping part from the residual waste on the surface of the photovoltaic module, so as to avoid some waste particles being too large and heavy to be successfully collected. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of the backsheet waste collection device for photovoltaic module recycling according to the present invention; Figure 2 This is a partial three-dimensional structural diagram of the backsheet waste collection device for photovoltaic module recycling according to the present invention. Figure 3 for Figure 1 Enlarged right-view schematic diagram of a local structure in the middle; Figure 4 for Figure 3 Enlarged cross-sectional view along the central AA direction; Figure 5 This is an enlarged schematic diagram of the three-dimensional structure of the adsorption container; Figure 6 for Figure 5 A left-view diagram; Figure 7 for Figure 6 Enlarged cross-sectional view of the middle BB direction; Figure 8 for Figure 5 Enlarged schematic diagram of the structure at point C; Wherein: 1. Negative pressure adsorption unit; 10. Adsorption bucket; 100. Bucket body; k1. Lower open opening; k2. Upper open opening; g. Pressure roller; 101. Bucket nozzle; a0. Base plate; a1. End plate; a2. Side plate; b. Shaving part; r1. Shaving blade; k0. Negative pressure adsorption port; 102. Combing knife; d. Combing knife; r2. Combing blade; 11. Separator; 12. Dust collector; 2. Leakage receiving unit; 20. Material receiving section; 21. Material guiding section; 22. Material unloading section; G. Backsheet removal mechanism; J. Photovoltaic module; Z. Transfer roller assembly. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] 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.

[0022] 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.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 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.

[0024] 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.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Example 1, as Figures 1 to 8 As shown, the backsheet waste collection device for photovoltaic module recycling involved in this embodiment includes a negative pressure adsorption unit 1 and a leakage connection unit 2.

[0027] Specifically, in this embodiment, the backsheet removal mechanism G uses a conventional conveyor roller group Z to horizontally transport the photovoltaic module J forward. The negative pressure adsorption unit 1 is located above the discharge port of the backsheet removal mechanism G, and the negative pressure adsorption unit 1 includes an adsorption hopper 10 and a separator 11.

[0028] The adsorption hopper 10 includes a hopper body 100, a nozzle 101, and a combing cutter 102. The nozzle 101 extends along the width direction of the photovoltaic module J, and a shoveling part b with a shoveling blade r1 is formed on the bottom side of the nozzle 101 facing the discharge port of the backplate removal mechanism G. A negative pressure adsorption port k0 extending along the length direction of the nozzle 101 is opened above the side where the shoveling part b is located. The negative pressure adsorption port k0 is oriented parallel to or obliquely downward with the surface of the photovoltaic module. The shoveling blade r1 is located inside the negative pressure adsorption port. The combing cutter 102 includes a plurality of combing blades d arranged at intervals along the length direction of the negative pressure adsorption port k0 inside the shoveling part b. Each combing blade d forms a combing blade r2 facing the negative pressure adsorption port k0, and each combing blade r2 extends from bottom to top. Based on the negative pressure formed inside the hopper body 100, the shoveling part b and the combing blades d cooperate to shovel and comb the residual waste on the surface of the photovoltaic module J. It should be noted that in this embodiment, pressure rollers g are provided on both the front and rear sides of the adsorption bucket 10 to ensure that the photovoltaic module J maintains the forward transmission power, and at the same time, the pressure of the pressure rollers g keeps the photovoltaic module J output flat.

[0029] In this example, the bottom of the bucket body 100 forms a lower open opening k1 that communicates with the nozzle 101, and the top forms an upper open opening k2 that communicates with the separator 11 through a negative pressure pipe. The volume of the inner cavity formed by the bucket body 100 gradually decreases from top to bottom. Here, based on the change in the inner cavity volume, the airflow velocity inside the nozzle is increased, thereby increasing the impact force between the waste and the combing blades and improving the combing effect of the combing blades.

[0030] In some specific embodiments, the lower opening k1 is a square opening extending along the length of the spout 101; the upper opening k2 is a circular opening, wherein the center of the square opening and the center of the circular opening are aligned vertically, and the diameter of the circular opening is greater than the width of the square opening and less than the length of the square opening.

[0031] In this example, the nozzle 101 includes a base plate a0, an end plate a1, and a side plate a2. The base plate a0 has a shoveling section b on the side near the discharge port of the back plate removal mechanism G, and the lower end of the side plate a2 near the discharge port of the back plate removal mechanism G forms a negative pressure suction port k0 at a distance from the base plate a0. This design is simple and easy to manufacture and implement.

[0032] In some specific embodiments, the base plate a0 extends horizontally. During the scraping process, the base plate a0 remains attached to and presses down on the scraped surface of the photovoltaic module J from the bottom surface. Here, the flattening effect of the base plate prevents the photovoltaic module from warping upwards due to the force of the scraping blade.

[0033] In some other specific embodiments, the base plate a0 can also be configured to extend obliquely upward from the scraping part b toward the discharge port of the back plate mechanism G, so that the residual waste on the surface of the scraping component and the part to be cut of the auxiliary component can be smoothly transported based on the stress formed by the scraping blade r1 contacting the already cut surface of the component.

[0034] For ease of implementation, each combing blade r2 is inclined vertically and intersects with the shoveling section b from its lower end. The shoveling section b has an upper cutting surface extending obliquely upward from the shoveling blade r1, and each combing blade r2 extends upward along the upper cutting surface of the shoveling section b. Here, based on the fact that the combing blades extend along the upper cutting surface of the shoveling section, the continuity of shoveling and combing is improved. When the waste material is shoveled up, it can be combed by the combing blades in a timely manner, which can greatly reduce the probability of waste material entanglement and agglomeration, thereby reducing the difficulty of combing and making it more conducive to negative pressure adsorption.

[0035] In some specific embodiments, in the orthographic projection on the horizontal plane, each combing blade r2 is perpendicular to the scraping blade r1; the horizontal cross-section of each combing blade d is an isosceles triangle with the combing blade r2 as its vertex. In other words, each combing blade d is a triangular pyramid shape that slopes upwards and away from the negative pressure adsorption port k0, and the two sides of the combing blade d intersect to form the combing blade r2. In the orthographic projection in the vertical and front-back directions, both sides forming the combing blade r2 are triangular. This not only facilitates the uniform combing of waste to both sides, but also enables the uniform distribution of the airflow generated by the negative pressure, ensuring that the waste between adjacent combing blades is absorbed and collected, avoiding adsorption dead zones.

[0036] Meanwhile, the top edge of the negative pressure adsorption port k0 (or the lower end of the side plate a2 near the discharge port of the back plate mechanism G) is lower than the upper end of each combing blade r2. This ensures that the waste material is accurately combed by the combing blades after being sucked into the negative pressure adsorption port.

[0037] In this example, separator 11 uses any conventional cyclone separator to separate and collect solid waste particles from the airflow. Meanwhile, for ease of implementation, the negative pressure adsorption unit 1 also includes a dust collector 12 connected to separator 11 via a negative pressure pipeline. The dust collector filters and purifies the airflow separated and discharged from separator 11 before it is released.

[0038] Furthermore, the leakage receiving unit 2 includes a receiving section 20 located directly below the backsheet removal mechanism G and inclined vertically, a guiding section 21 inclined downward from the lower side of the receiving section 20, and a discharge section 22 connected to the lower side of the guiding section 21. The guiding section 21 and / or the discharge section 22 are located directly below the negative pressure adsorption unit 1 to receive waste material dropped during grinding and / or rolling. Both the receiving section 20 and the guiding section 21 use guide plates to guide the waste material downwards at an angle, and the discharge section 22 uses a ring conveyor belt to output the received waste material. Here, it can not only receive backsheet fragments dropped during grinding and / or rolling by the backsheet removal mechanism, but also large particles of waste material dropped by the scraping section from the surface of the photovoltaic module, thus preventing some waste particles from being too large or heavy to be successfully absorbed and collected.

[0039] In summary, after adopting this backsheet waste collection device, the photovoltaic module enters the backsheet removal mechanism to physically cut (e.g., grind, roll) the backsheet to remove it. The backsheet waste that is cut off is collected by the leakage collection unit. As the photovoltaic module is conveyed to the discharge port of the backsheet removal mechanism, a negative pressure is formed inside the bucket. This causes the negative pressure suction port above the shovel section on the side of the bucket facing the discharge port to form a lateral suction negative pressure. The shovel section formed at the bottom of the bucket facing the discharge port cooperates with the negative pressure inside the bucket to shovel and collect the residual waste on the surface of the photovoltaic module.

[0040] Example 2: The photovoltaic module recycling equipment involved in this example includes the backsheet waste collection device involved in Example 1.

[0041] The present invention has been described in detail above, with the aim of enabling those skilled in the art to understand and implement the invention. However, this description should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be included within the scope of protection of the invention.

Claims

1. A backsheet waste collection device for photovoltaic module recycling, comprising a negative pressure adsorption unit and a leakage collection unit, wherein the negative pressure adsorption unit is located above the discharge port of the backsheet removal mechanism, and the leakage collection unit is used to collect waste generated by the grinding and / or rolling of the backsheet removal mechanism, characterized in that, The negative pressure adsorption unit includes an adsorption hopper and a separator connected to the adsorption hopper. The adsorption hopper includes a hopper body and a nozzle. The nozzle extends along the width of the photovoltaic module, and a shoveling part with a shoveling blade is formed at the bottom of the nozzle on the side facing the discharge port of the backsheet removal mechanism. A negative pressure adsorption port extending along the length of the nozzle is opened above the side where the shoveling part is located. The negative pressure adsorption port is oriented parallel to or obliquely downward with the surface of the photovoltaic module. The shoveling blade is located inside the negative pressure adsorption port, and the residual waste material on the surface of the photovoltaic module is shoveled and collected based on the negative pressure inside the hopper body and the cooperation of the shoveling blade.

2. The backsheet waste collection device for photovoltaic module recycling according to claim 1, characterized in that, The nozzle includes a bottom plate, an end plate, and a side plate. The bottom plate near the discharge port of the back plate removal mechanism forms the shovel section, and the lower end of the side plate near the discharge port of the back plate removal mechanism forms the negative pressure adsorption port at a distance from the bottom plate.

3. The backsheet waste collection device for photovoltaic module recycling according to claim 2, characterized in that, The base plate extends horizontally, and during the scraping process, the base plate remains attached to and presses down on the scraped surface of the photovoltaic module from the bottom.

4. The backsheet waste collection device for photovoltaic module recycling according to claim 1, characterized in that, The adsorption bucket also includes a combing knife, wherein the combing knife includes a plurality of combing knives arranged at intervals along the length direction of the negative pressure adsorption port on the inner side of the shoveling section. Each combing knife has a combing blade facing the negative pressure adsorption port and each combing blade extends from bottom to top. Based on the negative pressure formed inside the bucket, the shoveling section and the combing knife cooperate to shovel and comb the residual waste on the surface of the photovoltaic module.

5. The backsheet waste collection device for photovoltaic module recycling according to claim 4, characterized in that, Each of the combing blades is inclined vertically and intersects with the shaving portion from its lower end; and / or, the shaving portion has an upper cutting surface extending obliquely upward from the shaving blade, and each of the combing blades extends from bottom to top along the upper cutting surface of the shaving portion.

6. The backsheet waste collection device for photovoltaic module recycling according to claim 4 or 5, characterized in that, The horizontal cross-section of each of the combing blades is an isosceles triangle with the combing blade edge as the apex angle; and / or, each of the combing blades extends obliquely from bottom to top and away from the negative pressure adsorption port; and / or, in the orthogonal projection on the horizontal plane, each of the combing blade edges is arranged perpendicular to the scraping blade edge.

7. The backsheet waste collection device for photovoltaic module recycling according to claim 4, characterized in that, The top edge of the negative pressure adsorption port is lower than the upper end of each of the combing blades.

8. The backsheet waste collection device for photovoltaic module recycling according to claim 1, characterized in that, The bottom of the bucket body forms a lower open opening that communicates with the nozzle, and the top forms an upper open opening that communicates with the separator. The volume of the inner cavity formed by the bucket body gradually decreases from top to bottom.

9. The backsheet waste collection device for photovoltaic module recycling according to claim 8, characterized in that, The lower opening is a square opening extending along the length of the spout; the upper opening is a circular opening, wherein the center of the square opening is vertically aligned with the center of the circular opening, and the diameter of the circular opening is greater than the width of the square opening but less than the length of the square opening.

10. The backsheet waste collection device for photovoltaic module recycling according to claim 1, characterized in that, The leakage receiving unit includes a receiving section that is located directly below the back plate removal mechanism and is inclined vertically, a guiding section that is inclined downward from the lower side of the receiving section, and a discharge section that is connected to the lower side of the guiding section. The guiding section and / or the discharge section are located directly below the negative pressure adsorption unit to receive the waste material dropped by the shovel.

11. A photovoltaic module recycling device, characterized in that, It includes the backplate waste collection device according to any one of claims 1-10.

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