Circulating assembly line for pyrolyzing waste photovoltaic panels

Abstract

The invention discloses a circulating assembly line for pyrolyzing waste photovoltaic panels. The device comprises a feeding section, a pyrolysis section, a discharging section and a recovery section, a material conveying tray is arranged on the feeding section, the feeding section comprises a linear material conveying section and a rotary material conveying section, the tail end of the linear feeding section is connected with the head end of the rotary section, the linear feeding section comprises a feeding device, and the feeding device is used for placing waste photovoltaic panels on the rotary tray; the head end of the pyrolysis section is connected with the tail end of the rotary feeding section, and the pyrolysis section comprises a pyrolysis furnace for heating the waste photovoltaic panel; the discharging section comprises a linear discharging section and a rotary discharging section; the head end of the recycling section is connected with the tail end of the rotary discharging section, the tail end of the recycling section is connected with the tail end of the discharging section, the recycling section comprises a collecting device, and the collecting device is used for collecting waste photovoltaic panels after pyrolysis. In the process of crushing and recycling the waste photovoltaic panels, the links of feeding, decomposing, recycling and conveying do not need manpower participation, and the recycling efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of waste photovoltaic recycling, and in particular to a circulating production line for pyrolyzing waste photovoltaic panels. Background Art

[0002] As core components of photovoltaic power generation systems, the performance and lifespan of photovoltaic modules directly impact the overall system's power generation efficiency and economic benefits. Double-glass photovoltaic modules, due to their high photoelectric conversion efficiency and excellent mechanical properties, have gradually become the mainstream in the market. However, as photovoltaic modules age, a large number of retired modules urgently need to be disposed of.

[0003] PV panels consist of a frame, a silicon layer, and two layers of encapsulating glass on either side of the silicon layer. Recycling requires first removing the frame, then crushing the silicon layer and the two layers of encapsulating glass on either side of the silicon layer. The silicon and glass fragments are then recycled separately. Crushing and recycling involves multiple steps. Existing technology generally doesn't have a high degree of automation, requiring manual intervention at some stages, resulting in low efficiency. Summary of the Invention

[0004] The present invention solves the problem that the existing photovoltaic component recycling equipment has a low degree of automation, which affects the recycling efficiency. It provides a circulating production line for pyrolysis of waste photovoltaic panels, which realizes automatic operation, automatic loading, automatic crushing and automatic recycling, reduces the participation of manpower, reduces the safety hazards of production, reduces the secondary pollution that is common in the waste photovoltaic recycling process, and achieves the purpose of reducing the harm of workers to pollutants; and improves the recycling efficiency of waste photovoltaics.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A circulating production line for pyrolyzing waste photovoltaic panels, comprising:

[0007] A feeding section is provided with a transport tray, the feeding section includes a straight transport section and a return transport section, the tail end of the straight feeding section is connected to the head end of the return section, the straight feeding section includes a loading device, and the loading device is used to place waste photovoltaic panels on the running tray;

[0008] A pyrolysis section, wherein the head end of the pyrolysis section is connected to the tail end of the rotary feeding section, and the pyrolysis section includes a pyrolysis furnace, which is used to pyrolyze the waste photovoltaic panels in the transport tray;

[0009] A discharging section, comprising a straight discharging section and a rotary discharging section, wherein the head end of the straight discharging section is connected to the tail end of the pyrolysis section;

[0010] The recovery section has its head end connected to the tail end of the rotary discharge section, and its tail section is connected to the head end of the linear transport section. The recovery section includes a collecting device, which is used to collect the waste photovoltaic panels after pyrolysis. The feeding section, pyrolysis section, discharge section and recovery section are connected in sequence to form a closed circulation production line.

[0011] In this solution, the transport tray is initially positioned on the linear feed section and directly below the loading device. The loading device then adds waste photovoltaic panels to the transport tray on the linear feed section. The linear feed section activates and transports the tray to the return transport section. The return transport section then transports the tray to the pyrolysis section. The pyrolysis section pyrolyzes the waste photovoltaic panels in the tray. After the pyrolysis is complete (the waste photovoltaic panels in the tray are broken down into fragments), the tray enters the discharge section. From the discharge section, it enters the recycling section. When the tray reaches the end of the recycling section, a collection device collects the fragments in the tray. After collection is complete, the tray reenters the linear feed section. When the tray stops directly below the loading device, the loading device loads the tray with waste photovoltaic panels again. This cycle repeats until the waste photovoltaic panels are recycled. Throughout the recycling process, loading, decomposition, recycling, and transporting steps all require no human intervention, significantly improving recycling efficiency.

[0012] Preferably, the transport tray includes a bottom plate having a rectangular cross-section and enclosures provided at the rear, left, and right edges of the bottom plate. The bottom plate and the three enclosures form a storage space, and an opening communicating with the storage space is formed at the front of the bottom plate. The size of the tray is adapted to the size of the discarded photovoltaic panels. A loading device places the discarded photovoltaic panels into the storage space from the top of the transport tray, and the opening at the front of the tray facilitates the dumping of the discarded photovoltaic panels.

[0013] Preferably, the loading device includes a frame, a material picking mechanism and a material storage mechanism, the material picking mechanism transfers the waste photovoltaic panels stored in the material storage mechanism to the transport tray of the feeding section, and the frame is provided with a guide rail structure along the left and right directions; the material picking mechanism includes a base plate, a first lifting structure arranged on the bottom surface of the base plate and a suction cup structure, the first lifting structure is used to drive the suction cup structure to move in the up and down directions, the substrate is slidably arranged on the guide rail structure, the suction cup structure is located above the assembly line, and the suction cup structure includes a plurality of suction heads for adsorbing waste photovoltaic panels; the material storage mechanism includes a table plate and a second lifting structure for driving the table plate to rise and fall, the second lifting structure is located below the table plate, and a plurality of waste photovoltaic panels are stacked above the table plate, and the suction cup structure can be moved directly above the table plate. During actual operation, the material-picking mechanism first moves to the top of the table, and the first lifting structure drives the material-picking mechanism to descend until the suction cup structure sucks the discarded photovoltaic panel, and then the first lifting structure drives the material-picking mechanism to rise, and then the material-picking mechanism moves to the top of the transport tray, and the first lifting structure drives the material-picking mechanism to descend and then place the sucked discarded photovoltaic panel in the transport tray, and finally the first lifting structure drives the material-picking mechanism to rise again to avoid the transport tray.

[0014] Preferably, the guide rail structure includes a first driving structure and two guide rails arranged in parallel, the substrate is located between the two guide rails and is slidably arranged on the two guide rails, and the first driving structure is used to drive the substrate to slide on the two guide rails.

[0015] Preferably, the first lifting structure comprises a first cylinder and a mounting bracket slidably connected to the telescopic end of the first cylinder, with the suction cup structure located at the lower end of the mounting bracket. The second lifting structure comprises a scissor assembly and a screw assembly for driving the deformation of the scissor assembly, with the table connected to the top of the scissor assembly. During operation, multiple discarded photovoltaic panels are stacked on the table, and the second lifting structure drives the table to ensure that the discarded photovoltaic panel at the top of the table is at the optimal material removal height, at which point the first lifting structure's operating distance is minimized.

[0016] Preferably, the collection device includes a waste hopper, a turning mechanism, and a blocking mechanism, wherein the waste hopper is located below the tail section of the recovery section; the turning mechanism includes a turning frame and a second drive structure, wherein the turning frame is rotatably connected to the edge of the tail section of the recovery section, and the second drive structure is used to drive the turning frame to tilt toward the waste hopper; the blocking mechanism is provided on the front end surface of the frame body, and is used to prevent the transport tray in a tilted state from moving out of the turning frame. When the turning frame is in an initial position, the top surface of the turning frame is horizontal; when dumping the waste photovoltaic panel fragments in the transport tray, the blocking mechanism is first activated, and then the second drive structure drives the turning frame to tilt toward the waste hopper to a dumping angle until the waste photovoltaic panel fragments in the transport tray flow into the waste hopper from the opening of the transport tray, and the blocking mechanism restricts the transport tray to the tilted turning frame; then the second drive structure drives the turning frame to return to a horizontal position, closes the blocking mechanism, and the recovery section continues to transport the transport tray to the feed section.

[0017] Preferably, the blocking mechanism includes at least two electric push rods, each comprising a housing, a push rod motor located within the housing, and a push rod connected to the push rod motor. The plurality of electric push rods are spaced apart on the front end of the tilting frame, with the top of the housing not extending beyond the top of the tilting frame. When the blocking mechanism is activated, the push rods of the electric push rods extend, blocking the front edge of the opening of the transport tray, thereby confining the transport tray to the tilted tilting frame. Waste photovoltaic panel debris within the transport tray is discharged into a waste hopper through the gaps between the push rods.

[0018] Preferably, the waste hopper has a feed opening at the top, and the width of the feed opening is greater than the width of the transport tray. By setting the feed opening greater than the width of the transport tray, the waste hopper can easily receive photovoltaic waste fragments dumped from the transport tray.

[0019] Preferably, the straight material transport section includes a conveyor belt structure, the return material transport section includes a first transmission structure, the first transmission structure includes a first straight roller transmission assembly and two first pushing assemblies, the two first pushing assemblies are used to push the material transport pallet to change direction to the pyrolysis section on the return material transport section, the pyrolysis section includes a second straight roller transmission assembly, the second straight roller transmission assembly is used to transfer the material transport pallet from the head end to the tail end of the pyrolysis section, the straight material discharge section is provided with a third straight roller transmission assembly, the rotary material discharge section is provided with a fourth straight roller transmission assembly and two second pushing assemblies, the second pushing assembly is used to push the material transport pallet to change direction to the recovery section on the rotary material discharge section, and the recovery section includes an inclined roller conveying assembly.

[0020] Preferably, the pyrolysis furnace is a gas-fired pyrolysis furnace.

[0021] The principles and beneficial effects of the present invention using the above technical solution are:

[0022] 1. From the perspective of improving efficiency, in the process of crushing and recycling waste photovoltaic panels, the loading, decomposition, recycling and transmission links do not require human participation; and the circulating assembly line mentioned in this application can realize circular processing, which greatly improves the recycling efficiency.

[0023] 2. From the perspective of the space occupied, the circulating assembly line mentioned in this application has a high degree of integration, among which the loading, decomposition and recycling links are basically attached to the assembly line itself or become part of the assembly line. Compared with the existing technology, under the same processing capacity, the assembly line mentioned in this application occupies less space. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a top view of the recycling line for discarded photovoltaic panels;

[0025] Figure 2 It is a schematic diagram of the linear feeding section and part of the loading device;

[0026] Figure 3 It is a schematic diagram of the feeding device;

[0027] Figure 4 It is a side view of the loading device;

[0028] Figure 5 is a schematic diagram of part of the collection device;

[0029] Figure 6 is a side view of a portion of the collection device;

[0030] Figure 7 is a schematic diagram of the collection device and part of the recovery section;

[0031] Figure 8 It is a schematic diagram of the return material section;

[0032] Figure 9 It is a schematic diagram of the rotary discharging section;

[0033] Figure 10 Schematic diagram of shipping pallets and discarded photovoltaic panels.

[0034] The reference numerals in the figures are:

[0035] 1. Circular assembly line; 2. Feeding section; 3. Transport tray; 4. Linear transport section; 5. Return transport section; 6. Loading device; 7. Pyrolysis section; 9. Discharge section; 10. Linear discharge section; 11. Rotary discharge section; 12. Recovery section; 13. Collection device; 14. Bottom plate; 15. Enclosure; 16. Frame; 18. Retrieving mechanism; 19. Storage mechanism; 20. Base plate; 21. First lifting mechanism; 23. Guide rail structure; 24. Suction head; 25. Second lifting mechanism; 26. Guide rail; 27. First cylinder; 28 , mounting frame; 29, scissor assembly; 30, waste hopper; 31, flip frame; 32, blocking mechanism; 33, second cylinder; 34, electric push rod, 35, shell; 36, push rod; 37, feed port; 38, conveyor belt structure; 39, first straight roller transmission assembly; 41, third straight roller transmission assembly; 42, fourth straight roller transmission assembly; 43, first pushing assembly; 44, belt; 45, belt motor; 46, table; 47, second pushing assembly; 48, pushing block; 49, horizontal push rod; 100, discarded photovoltaic panels. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0038] The discarded photovoltaic panel 100 mentioned in this embodiment refers to the discarded photovoltaic panel 100 with only the silicon layer and two encapsulation glass layers remaining after the frame is removed. Figure 1 As shown, the feeding section 2 is the starting point of the circulating assembly line 1, the recovery section 12 is the end point of the circulating assembly line 1, the head end of each transmission part refers to the end where the transport pallet 3 enters, and the tail end refers to the end where the transport pallet 3 moves out.

[0039] The specific implementation of the present invention is as follows:

[0040] like Figures 1 to 10As shown, the present invention provides a circulating production line for pyrolysis of waste photovoltaic panels, including a feeding section 2, a pyrolysis section 7, a discharging section 9 and a recovery section 12; a transport tray 3 is provided on the feeding section 2, the feeding section 2 includes a straight transport section 4 and a return transport section 5, the tail end of the straight feeding section 2 is connected to the head end of the rotary section, the straight feeding section 2 includes a loading device 6, the loading device 6 is used to place waste photovoltaic panels 100 on the running tray; the head end of the pyrolysis section 7 is connected to the tail end of the rotary feeding section 2, the pyrolysis section 7 includes a pyrolysis furnace, and the pyrolysis furnace is A gas-fired pyrolysis furnace is provided with a heating portion for heating the waste photovoltaic panels 100 in the transport tray 3; the discharge section 9 includes a straight discharge section 10 and a rotary discharge section 11; the head end of the recovery section 12 is connected to the tail end of the rotary discharge section 11, and the tail end of the recovery section 12 is connected to the head end of the straight transport section 4; the recovery section 12 includes a collecting device 13, which is used to collect the waste photovoltaic panels 100 after pyrolysis. The feeding section 2, the pyrolysis section 7, the discharge section 9 and the recovery section 12 are connected in sequence to form a closed circulation production line.

[0041] Furthermore, the straight transport section 4 includes a conveyor belt structure 38, the return transport section 5 includes a first transmission structure, the first transmission structure includes a first straight roller transmission component 39 and two first pushing components 43, the two first pushing components 43 are used to push the transport pallet 3 to change direction to the pyrolysis section 7 on the return transport section 5, the pyrolysis section 7 includes a second straight roller transmission component (not shown in the figure), the second straight roller transmission component (not shown in the figure) is used to transfer the transport pallet 3 from the head end to the tail end of the pyrolysis section 7, the straight discharge section 10 is provided with a third straight roller transmission component 41, the rotary discharge section 11 is provided with a fourth straight roller transmission component 42 and two second pushing components 47, the second pushing component 47 is used to push the transport pallet 3 to change direction to the recovery section 12 on the rotary discharge section 11, and the recovery section 12 includes an inclined roller conveying component. In this embodiment, the straight material transport section 4 and the recovery section 12 are located on the same side, the pyrolysis section 7 is located on the other side and is arranged parallel to the straight material transport section 4 and the recovery section 12. The return material transport section 5 connects the straight material transport section 4 and the pyrolysis section 7, and the rotary discharge section 11 connects the pyrolysis section 7 and the recovery section 12. Specifically, the total length of the straight material transport section 4 and the recovery section 12 after connection is 70 to 80 meters, the length of the pyrolysis section 7 is 70 to 80 meters, the length of the return material transport section 5 is 30 to 40 meters, and the length of the rotary discharge section 11 is 30 to 40 meters. The return material transport section 5 and the rotary discharge section 11 connect the straight material transport section 4, the recovery section 12, and the pyrolysis section 7 into a closed rectangular production line. The production line mentioned in this solution is provided with 50 to 60 material transport trays 3 at intervals. The first pusher assembly 43 and the second pusher assembly 47 have the same structure and function. Here, the first pusher assembly 43 is used as an example for description. The first pusher assembly 43 includes two pusher blocks 48 spaced apart, a horizontal pusher 49 for connecting the two pusher blocks 48, and a pushing structure (not shown) for driving the pushing blocks. The first pusher assembly 43 and the second pusher assembly are used to change the direction of the transport tray 3 on the circular assembly line 1. The two sets of first pusher assemblies 43 enable the transport tray 3 to change direction twice, thereby realizing the transmission of the transport tray 3 at the corner of the rectangular circular assembly line 1. It can be understood that the height of the horizontal pusher 49 is less than the height of the enclosure 15, so that the horizontal pusher 49 can push the transport tray 3. The pushing structure is arranged below the return transport section 5. In this embodiment, it includes a chain and a chain motor for driving the chain. The chain is connected to the pusher blocks 48. When the chain motor drives the chain, the chain drives the pusher blocks 48 and the horizontal pusher 49 to move.It should be noted that, since the material pallet 3 reaches a high temperature (over 300 degrees Celsius) after passing through the pyrolysis furnace, the bottom of the material pallet 3 will deform. When using straight rollers to transport the material pallet 3 over a long distance, the material pallet 3 will deflect in the straight roller section. Since the recovery section 12 is long, an inclined roller conveyor assembly is used to transport the material pallet 3. When the inclined rollers transport the material pallet 3, the lateral friction of the inclined rollers will cause the material pallet 3 to return to the center of the inclined roller section, thereby preventing the material pallet 3 from deviating in the recovery section 12. The discharge section 9 is short, so straight rollers can be used for transport. Even if the material pallet 3 deflects, it will not affect its entry into the recovery section 12. In addition, the first straight roller transmission assembly 39, the second straight roller transmission assembly (not shown), the third straight roller transmission assembly 41, and the third straight roller transmission assembly 41 are all multiple straight rollers arranged at intervals, transmission members, and a power source that drives the multiple straight rollers through the transmission members. Straight roller transmission is a common method in the transmission field and will not be described in detail here.

[0042] like Figure 1 As shown, in this embodiment, taking one of the transport trays 3 as an example, the initial position of the transport tray 3 is located on the straight feed section 2 and directly below the loading device 6, and then the loading device 6 adds the waste photovoltaic panels 100 to the transport tray 3 on the straight feed section 2, and the straight feed section 2 starts to transfer the transport tray 3 to the return transport section 5, and then the return transport section 5 transfers the transport tray 3 to the pyrolysis section 7; the pyrolysis section 7 pyrolyzes the waste photovoltaics in the transport tray 3, and after the pyrolysis is completed (the waste photovoltaic panels 100 in the transport tray 3 00 is broken down into fragments), and the transport tray 3 enters the discharge section 9; then, from the discharge section 9, it enters the recovery section 12. When the transport tray 3 is transported to the end of the recovery section 12, the collection device 13 collects the fragments of the discarded photovoltaic panels 100 in the transport tray 3. After collection is completed, the transport tray 3 enters the linear feed section 2 again. When it passes directly below the loading device 6, the transport tray 3 stops, and the loading device 6 loads the transport tray 3 with more discarded photovoltaic panels 100. This cycle repeats, and the discarded photovoltaic panels 100 are recycled. Throughout the recycling process, the loading, decomposition, recovery, and transportation steps all require no human intervention, significantly improving recycling efficiency. It should be noted that the combined length of the linear transport section 4 and the recovery section 12, after being connected, is approximately the same as the length of the pyrolysis section 7. The loading process and the dumping of the fragments of the discarded photovoltaic panels 100 occur in these sections. Both the loading and dumping processes require the transport trays 3 to remain in place. When multiple transport trays 3 are operated at a constant speed on the circulating assembly line 1, accumulation and congestion can occur. In this embodiment, the aforementioned problem is addressed by setting the transport speeds of the linear transport section 4 and the recovery section 12 higher than the transport speed of the pyrolysis section 7.

[0043] like Figure 10As shown, in this embodiment, the transport tray 3 includes a bottom plate 14 having a rectangular cross-section. Enclosures 15 are provided on the rear, left, and right edges of the bottom plate 14. The bottom plate 14 and the three enclosures 15 form a storage space. The front side of the bottom plate 14 forms an opening connected to the storage space. The size of the transport tray 3 is adapted to the size of the discarded photovoltaic panels 100. The loading device 6 places the discarded photovoltaic panels 100 into the storage space from the top of the transport tray 3. The opening at the front side of the transport tray 3 facilitates the dumping of the discarded photovoltaic panels 100 after processing. The provision of the enclosures 15 prevents the fragments of the discarded photovoltaic panels 100 from being splashed due to thermal splitting. During actual operation, the discarded photovoltaic panels 100 are placed in the storage space and away from the opening. This placement ensures that the fragments of the discarded photovoltaic panels 100 that are thermally split remain in the transport tray 3 as much as possible.

[0044] like Figure 2 and Figure 3As shown, the loading device 6 includes a frame 16, a material picking mechanism 18 and a material storage mechanism 19, and a guide rail structure 23 is provided on the frame 16 in the left and right directions; the material picking mechanism 18 includes a base plate 20, a first lifting structure 21 arranged on the bottom surface of the base plate 20 and a suction cup structure, the first lifting structure 21 is used to drive the suction cup structure to move in the up and down directions, the base plate 20 is slidably set on the guide rail structure 23, the suction cup structure is located above the assembly line, and the suction cup structure includes a plurality of suction heads 24 for adsorbing waste photovoltaic panels 100; the material storage mechanism 19 includes a table and a second lifting structure 25 for driving the table to lift and lower, the second lifting structure 25 is located below the table, and a plurality of waste photovoltaic panels 100 are stacked and placed above the table, and the suction cup structure can be moved directly above the table. During actual operation, the material picking mechanism 18 first moves to the top of the table, and the first lifting structure 21 drives the material picking mechanism 18 to descend until the suction cup structure sucks the discarded photovoltaic panel 100, and then the first lifting structure 21 drives the material picking mechanism 18 to rise, and then the material picking mechanism 18 moves to the top of the material transport tray 3, and the first lifting structure 21 drives the material picking mechanism 18 to descend and then places the sucked discarded photovoltaic panel 100 on the material transport tray 3, and finally the first lifting structure 21 drives the material picking mechanism 18 to rise again to avoid the material transport tray 3, and the guide rail structure 23 includes a first driving structure and two parallel guide rails 26, the substrate 20 is located between the two guide rails 26 and is slidably arranged on the two guide rails 26, and the first driving structure is used to drive the substrate 20 to slide on the two guide rails 26. In this embodiment, the first driving structure includes a driving belt 44 and a belt motor 45 for driving the belt 44, the belt motor 45 is arranged at the top of the frame 16, and the belt 44 is connected to the top of the substrate 20 through a connecting block (not shown). A belt motor 45 drives the belt 44, which in turn drives the base plate 20 to slide on the guide rails. The first lifting structure 21 comprises a first cylinder 27, a mounting frame 28 slidably connected to the telescopic end of the first cylinder, and a suction cup structure located at the lower end of the mounting frame. The second lifting structure 25 comprises a scissor assembly 29 and a screw assembly (not shown) for driving the scissor assembly 29. A table 46 is connected to the top of the scissor assembly 29. During operation, multiple discarded photovoltaic panels 100 are stacked on the table 46. The second lifting structure 25 drives the table 46 so that the top discarded photovoltaic panel 100 is at the optimal height for removal, minimizing the travel distance of the first lifting structure 21. In this embodiment, the optimal height for the top discarded photovoltaic panel 100 on the table 46 coincides with the height of the feed section 2. In this embodiment, the suction head 24 is made of rubber, which can absorb vibration and shock, making it suitable for adsorbing fragile panels such as glass. Furthermore, in this application, there are 16 suction heads 24. In actual operation, eight suction heads 24 can meet the adsorption demand. The redundant design of the number of suction heads 24 ensures the stable operation of the material taking mechanism 18.

[0045] like Figure 6and Figure 7 As shown, the collecting device 13 includes a waste hopper 30, a flipping mechanism and a blocking mechanism 32. The waste hopper 30 is located below the tail section of the recovery section 12; the flipping mechanism includes a flipping frame 31 and a second driving structure. The flipping frame 31 is rotatably connected to the edge of the tail end of the recovery section 12, and the second driving structure is used to drive the flipping frame 31 to tilt toward the waste hopper 30; the blocking mechanism 32 is arranged on the front end face of the frame body 16, and is used to prevent the transport tray 3 in a tilted state from moving out of the flipping frame 31. When the turning frame 31 is in the initial position, the top surface of the turning frame 31 is horizontal; when dumping the fragments of the discarded photovoltaic panels 100 in the transport tray 3, the blocking mechanism 32 is first activated, and then the second driving structure drives the turning frame 31 to tilt toward the waste hopper 30 to a dumping angle until the fragments of the discarded photovoltaic panels 100 inside the transport tray 3 flow into the waste hopper 30 from the opening of the transport tray 3, and the blocking mechanism 32 restricts the transport tray 3 to the tilted turning frame 31; then the second driving structure drives the turning frame 31 to reset to a horizontal position, closes the blocking mechanism 32, and the recovery section 12 continues to transport the transport tray 3 to the feed section 2. In this embodiment, the second drive structure includes a second cylinder 33, the telescopic end of which is hingedly connected to the rear portion of the bottom of the tilting frame 31. The blocking mechanism 32 includes at least two electric push rods 34, each comprising a housing 35, a push rod motor located within the housing 35, and a push rod 36 connected to the push rod motor. Multiple electric push rods 34 are spaced apart on the front end of the tilting frame 31, with the top of the housing 35 not extending beyond the top of the tilting frame 31. When the blocking mechanism 32 is activated, push rods 36 of the electric push rods 34 extend and block the front edge of the opening of the transport tray 3, thereby confining the transport tray 3 on the tilted tilting frame 31. The discarded photovoltaic panel 100 fragments within the transport tray 3 are discharged into the waste hopper 30 through the gap between the push rods 36. It should be noted that the number of electric push rods 34 in the blocking mechanism 32 is not limited. In this embodiment, two electric push rods 34 are provided, one on each side of the front edge of the tilting frame 31.

[0046] like Figure 7 As shown, the top of the waste hopper 30 has a feed opening 37, the width of which is greater than the width of the transport tray 3. By setting the feed opening 37 larger than the width of the transport tray 3, the waste hopper 30 can more easily receive the photovoltaic waste fragments dumped from the transport tray 3. It will be appreciated that the waste hopper 30 is movable. When the waste hopper 30 is full of discarded photovoltaic panel 100 fragments, the waste hopper 30 can be replaced to ensure uninterrupted operation of the assembly line.

[0047] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A circulating production line for pyrolysis of waste photovoltaic panels, characterized in that: include: A feeding section is provided with a transport tray, the feeding section includes a straight transport section and a return transport section, the tail end of the straight feeding section is connected to the head end of the return section, the straight feeding section includes a loading device, and the loading device is used to place waste photovoltaic panels on the running tray; A pyrolysis section, wherein the head end of the pyrolysis section is connected to the tail end of the rotary feeding section, and the pyrolysis section includes a pyrolysis furnace, which is used to pyrolyze the waste photovoltaic panels in the transport tray; A discharging section, comprising a straight discharging section and a rotary discharging section, wherein the head end of the straight discharging section is connected to the tail end of the pyrolysis section; The recovery section has its head end connected to the tail end of the rotary discharge section, and its tail section is connected to the head end of the linear transport section. The recovery section includes a collecting device, which is used to collect the waste photovoltaic panels after pyrolysis. The feeding section, pyrolysis section, discharge section and recovery section are connected in sequence to form a closed circulation production line.

2. A circulating flow line for pyrolysis of waste photovoltaic panels according to claim 1, characterized in that: The material transport pallet includes a base plate, the cross-section of which is rectangular, and enclosures are provided at the rear, left and right edges of the base plate. The base plate and the three enclosures form a storage space, and the front side of the base plate forms an opening connected to the storage space. The size of the pallet is adapted to the size of the discarded photovoltaic panels.

3. A circulating flow line for pyrolysis of waste photovoltaic panels according to claim 1, characterized in that: The loading device includes a frame, a material picking mechanism and a material storage mechanism. The material picking mechanism transfers the waste photovoltaic panels stored in the material storage mechanism to the material transport tray of the feeding section. The frame is provided with a guide rail structure along the left and right directions; the material picking mechanism includes a base plate, a first lifting structure arranged on the bottom surface of the base plate and a suction cup structure. The first lifting structure is used to drive the suction cup structure to move in the up and down directions. The substrate is slidably arranged on the guide rail structure. The suction cup structure is located above the assembly line. The suction cup structure includes a plurality of suction heads for adsorbing waste photovoltaic panels; the material storage mechanism includes a table plate and a second lifting structure for driving the table plate to rise and fall. The second lifting structure is located below the table plate. A plurality of waste photovoltaic panels are stacked above the table plate. The suction cup structure can move directly above the table plate.

4. A circulating flow line for pyrolysis of waste photovoltaic panels according to claim 3, characterized in that: The guide rail structure includes a first driving structure and two guide rails arranged in parallel. The substrate is located between the two guide rails and is slidably arranged on the two guide rails. The first driving structure is used to drive the substrate to slide on the two guide rails.

5. The circulating flow line for pyrolysis of waste photovoltaic panels according to claim 3, characterized in that: The first lifting structure includes a first cylinder and a mounting frame slidably connected to the telescopic end of the first cylinder, and the suction cup structure is located at the lower end of the mounting frame; the second lifting structure includes a scissors-type assembly and a screw rod assembly for driving the scissors-type assembly to deform, and the platform is connected to the top of the scissors-type assembly.

6. The circulating flow line for pyrolysis of waste photovoltaic panels according to claim 1, characterized in that: The collecting device includes a waste hopper, a turning mechanism and a blocking mechanism, the waste hopper is located below the tail section of the recovery section; the turning mechanism includes a turning frame and a second driving structure, the turning frame is rotatably connected to the edge of the tail section of the recovery section, and the second driving structure is used to drive the turning frame to tilt toward the waste hopper; the blocking mechanism is arranged on the front end face of the frame body, and the blocking mechanism is used to prevent the material transport pallet in a tilted state from moving out of the turning frame.

7. The circulating flow line for pyrolysis of waste photovoltaic panels according to claim 3, characterized in that: The blocking mechanism includes at least two electric push rods, which include a shell, a push rod motor located in the shell, and a push rod connected to the push rod motor. Multiple electric push rods are arranged at intervals on the front end surface of the flip frame, and the top of the shell does not exceed the top of the flip frame.

8. The circulating flow line for pyrolysis of waste photovoltaic panels according to claim 6, characterized in that: The top of the waste hopper is provided with a feed opening, and the width of the feed opening is greater than the width of the transport tray.

9. The circulating flow line for pyrolysis of waste photovoltaic panels according to claim 1, characterized in that: The straight material transport section includes a conveyor belt structure, the return material transport section includes a first transmission structure, the first transmission structure includes a first straight roller transmission assembly and two first pushing assemblies, the two first pushing assemblies are used to push the material transport pallet to change direction to the pyrolysis section on the return material transport section, the pyrolysis section includes a second straight roller transmission assembly, the second straight roller transmission assembly is used to transfer the material transport pallet from the head end to the tail end of the pyrolysis section, the straight material discharge section is provided with a third straight roller transmission assembly, the rotary material discharge section is provided with a fourth straight roller transmission assembly and two second pushing assemblies, the second pushing assembly is used to push the material transport pallet to change direction to the recovery section on the rotary material discharge section, and the recovery section includes an inclined roller conveying assembly.

10. The circulating flow line for pyrolysis of waste photovoltaic panels according to claim 1, characterized in that: The pyrolysis furnace is a gas-fired pyrolysis furnace.

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