Water-based coating device for photovoltaic glass production

Abstract

The invention provides a water-based film coating device for photovoltaic glass production, and relates to the technical field of photovoltaic glass production, the water-based film coating device comprises a feeding frame, a film coating box, a film coating liquid storage tank and a drying box, a spraying assembly is fixedly installed in the film coating box, and the spraying assembly comprises a driving bearing seat, a tilting support and an atomizing nozzle; detection assemblies are fixedly installed in the tilting supports, each detection assembly comprises an image module, a transmission line, a lens and a flow blocking cover, the flow blocking covers are designed in an inclined external expansion mode, and water-based coating liquid is sprayed to the surface of photovoltaic glass through a plurality of atomization nozzles at the bottom ends of the tilting supports; the water-based coating liquid can form a uniform and transparent film on the surface of the photovoltaic glass, can effectively reduce reflection of light on the surface of the glass and increase the transmittance of the light, is simple in production process, is favorable for ensuring the quality consistency of the photovoltaic glass, and can reduce the defective rate and the production cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic glass production, and more specifically, particularly relates to a water-based coating device for photovoltaic glass production. Background Art

[0002] Coating is an important process in the production of photovoltaic glass. By coating a porous silicon oxide film on the surface of the glass, the effective refractive index of the film is adjusted by using the volume ratio of the voids, thereby achieving the purpose of anti-reflection and anti-transmission. At present, there are many kinds of coating materials in the market. Different coating materials have different effects on the gain of photovoltaic glass. In practical applications, the equipment usually requires the following technologies:

[0003] 1. The coating box provides a relatively closed space;

[0004] 2. The conveyor roller set allows the glass to move continuously during the coating process;

[0005] 3. Spraying mechanism, spraying the coating liquid onto the surface of photovoltaic glass in the form of atomization or droplets;

[0006] Photovoltaic glass production coating provides protection for the glass, blocks the erosion of the glass by ultraviolet rays, water vapor, acid and alkali substances in the external environment, prevents aging and corrosion of the glass surface, and prolongs the service life of the photovoltaic glass. In the coating process, there are the following deficiencies:

[0007] 1. For glass coating of different sizes, when the nozzle is in a fixed position, the spray range cannot be flexibly adjusted, which affects the coating effect. The amount of spray from the nozzle on the edge of the glass will be reduced, which may easily lead to uneven edge coating thickness and incomplete film layer.

[0008] 2. Improper control of parameters such as the concentration, temperature, and flow rate of the chemical solution, or blockage of the nozzle of the coating equipment or uneven movement speed, may cause uneven distribution of the solution on the glass surface, resulting in inconsistent film thickness, affecting the optical properties and appearance quality of the photovoltaic glass, and leading to problems such as uneven transmittance, reflection, or color differences.

[0009] 3. Photovoltaic glass production and coating use chemical solutions, many of which are toxic, irritating or corrosive, such as fluoride solutions, heavy metal salt solutions, etc. During the coating process, the solution may volatilize and produce harmful gases, which will affect environmental safety and cause harm to the health of operators. Summary of the invention

[0010] In order to solve the above technical problems, the present invention provides an aqueous coating device for photovoltaic glass production to solve the above problems.

[0011] A water-based coating device for photovoltaic glass production includes a loading rack, a coating box, a coating liquid storage tank and a drying box. A spray assembly is fixedly installed inside the coating box, and the spray assembly includes a drive support seat, a tiltable bracket and an atomizing nozzle. A detection assembly is fixedly installed inside the tiltable bracket, and the detection assembly includes an image module, a transmission line, a lens and a flow shield, and the flow shield is an oblique outward expansion design.

[0012] Preferably, two interfaces are installed at the top of the coating liquid storage tank, the coating liquid storage tank stores aqueous coating liquid, and two delivery pipes are installed at the side end of the coating liquid storage tank to connect with the coating box;

[0013] The two side ends of each driving support seat are fixedly mounted with driving gears that are rotatably connected to the tiltable bracket, and the interior of each driving gear is provided with a metal pipe for conveying the aqueous coating liquid, and the interior of each tiltable bracket is provided with a sleeve gear ring that is connected to the driving gear for rotation;

[0014] Two multi-channel spray pipes for conveying water-based coating liquid are fixedly installed on the top of the tiltable bracket, and two pipe sleeves connected with atomizing nozzles are rotatably installed on the bottom of each multi-channel spray pipe.

[0015] Preferably, two displacement adjustment slides for driving the pipe cover to rotate are slidably mounted on the top of the tiltable bracket, and two multi-stage telescopic pneumatic telescopic rods are fixedly mounted on the side ends of each displacement adjustment slide;

[0016] Two rotary push connecting rods are rotatably mounted inside each displacement adjustment slide, and the side end of each rotary push connecting rod is rotatably connected to the pipeline sleeve, and one of the rotary push connecting rods is a compressible multi-section design;

[0017] An inner lining page plate aligned with the multi-channel spray pipes is fixedly installed inside each of the pipeline envelopes, and a nylon filter membrane rotating synchronously with the pipeline envelope is fixedly installed on the top of each of the inner lining page plates.

[0018] Preferably, two synchronization rods are fixedly installed inside each of the multi-channel spray pipes, and a mounting hole for docking with the nylon filter membrane is opened inside each of the synchronization rods, and each of the synchronization rods is aligned with the inside of the pipeline cover;

[0019] The two inner side walls of the coating box are provided with synchronously rotating driving screws, and the surface of each driving screw is rotatably mounted with a horizontally sliding sliding adjustment block;

[0020] The side ends of the two sliding adjustment blocks are both provided with scraper assemblies, and the scraper assemblies include multi-section compression rods, a connecting frame and a coating scraper strip.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, when the displacement adjustment slide is driven by the pneumatic telescopic rod to slide horizontally, the displacement adjustment slide first squeezes one of the compressible push-rotation connecting rods without pushing the pipe cover to rotate. At the same time, the other pipe cover is directly connected to the displacement adjustment slide through the push-rotation connecting rod. The movement of the displacement adjustment slide directly pushes the pipe cover to rotate, and the pipe cover away from the two sides of the image module is rotated and closed to block the atomizing nozzle corresponding to the bottom end. In conjunction with the angle deflection of the tiltable bracket, photovoltaic glass of different sizes is sprayed and coated.

[0023] In the present invention, the aqueous coating liquid is sprayed onto the surface of the photovoltaic glass through multiple atomizing nozzles at the bottom of the tiltable bracket. The aqueous coating liquid can form a uniform, transparent film on the surface of the photovoltaic glass, which can effectively reduce the reflection of light on the glass surface and increase the transmittance of light. The production process is simple, which is conducive to ensuring the quality consistency of the photovoltaic glass.

[0024] In the present invention, the use of organic solvents is reduced by using an aqueous coating liquid, thereby significantly reducing the emission of VOCs and reducing the damage to the environment during the production process. At the same time, compared with a solvent-based coating liquid, the aqueous coating liquid is more easily rinsed away by water when cleaning equipment, and does not require the use of a large amount of organic solvents for cleaning, thereby reducing the pollutant content of the cleaning wastewater.

[0025] In the present invention, the aqueous coating liquid transported inside the multi-channel spray pipe is filtered by the synchronization rod to ensure the quality of the spray coating, and the pipe cover is rotated to drive the nylon filter membrane to rotate on the surface of the synchronization rod, and the bottom end of the nylon filter membrane is rubbed against the surface of the synchronization rod to allow the nylon filter membrane to scrape the attachments on the surface of the synchronization rod to prevent the synchronization rod from being blocked and the spraying amount of the atomizing nozzle from being affected.

[0026] In the present invention, the photovoltaic glass is spray-coated by means of a plurality of nozzles installed at the bottom of the tiltable bracket. Meanwhile, an image module and a lens are installed at the bottom of the tiltable bracket. The photovoltaic glass after coating is photographed through the lens to detect the coating quality of the photovoltaic glass. Defective coatings can be quickly detected and located. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the loading rack of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the coating box of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the driving support seat of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the tiltable support of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the displacement adjustment slide of the present invention;

[0032] Figure 6 It is a schematic diagram of the pipeline envelope structure of the present invention;

[0033] Figure 7 The present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0034] Figure 8 The present invention Figure 5 Schematic diagram of the enlarged structure at B.

[0035] In the figure, 11, loading rack; 12, coating box; 13, coating liquid storage tank; 14, drying box; 15, driving support seat; 16, tilting bracket; 17, driving gear; 18, metal pipe; 19, sleeve gear ring; 21, image module; 22, transmission line; 23, lens; 24, baffle cover; 25, atomizing nozzle; 26, multi-way spray pipe; 27, displacement adjustment slide; 28, pneumatic telescopic rod; 29, rotary push connecting rod; 31, pipeline cover; 32, lining page plate; 33, synchronization rod; 34, nylon filter membrane; 35, driving screw; 36, sliding adjustment block; 37, multi-section compression rod; 38, connecting frame; 39, coating scraper. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0037] See also Figure 1 - Figure 8The present invention provides a water-based coating device for photovoltaic glass production, comprising a loading rack 11, a coating box 12, a coating liquid storage tank 13 and a drying box 14. A spray assembly is fixedly installed inside the coating box 12. The spray assembly includes a driving support seat 15, a tiltable bracket 16 and an atomizing nozzle 25. A detection assembly is fixedly installed inside the tiltable bracket 16. The detection assembly includes an image module 21, a transmission line 22, a lens 23 and a baffle 24. The baffle 24 is an oblique outward expansion design. A plurality of nozzles are installed at the bottom of the frame 16 to spray and coat the photovoltaic glass. At the same time, an image module 21 and a lens 23 are installed at the bottom of the tiltable frame 16. The photovoltaic glass after coating is photographed through the lens 23 to detect the coating quality of the photovoltaic glass. For defective coating, the location can be quickly detected. At the same time, a baffle 24 is installed on the outside of the lens 23 to shield the coating solution splashed by the atomizing nozzle 25 to prevent the coating solution from adhering to the surface of the lens 23.

[0038] Two interfaces are installed at the top of the coating liquid storage tank 13. The coating liquid storage tank 13 stores aqueous coating liquid inside. Two delivery pipes are installed at the side end of the coating liquid storage tank 13 to connect with the coating box 12. The aqueous coating liquid is transported to the inside of the coating box 12 through the delivery pipes. At the same time, the tiltable bracket 16 is connected to the coating box 12 through a pipeline. The aqueous coating liquid is sprayed onto the surface of the photovoltaic glass through multiple atomizing nozzles 25 at the bottom of the tiltable bracket 16. The aqueous coating liquid can form a uniform and transparent film on the surface of the photovoltaic glass, which can effectively reduce the reflection of light on the glass surface and increase the transmittance of light. The production process is simple, which is conducive to ensuring the quality consistency of the photovoltaic glass.

[0039] The water-based coating liquid uses water as the main solvent, which greatly reduces the use of organic solvents, thereby significantly reducing the emission of VOCs and reducing the damage to the environment during the production process. At the same time, compared with the solvent-based coating liquid, the water-based coating liquid is easier to be washed away by water when cleaning the equipment, and does not require a large amount of organic solvents for cleaning, thereby reducing the pollutant content of the cleaning wastewater;

[0040] The two side ends of each driving support seat 15 are fixedly mounted with driving gears 17 that are rotatably connected to the tiltable bracket 16. A metal tube 18 for conveying water-based coating liquid is provided inside each driving gear 17. A sleeve gear ring 19 that is connected and rotated with the driving gear 17 is provided inside each tiltable bracket 16. The end of the driving gear 17 is connected to the output shaft of the motor to drive the two driving gears 17 to rotate at the side ends of the driving support seat 15. The surface of the driving gear 17 is connected to the sleeve gear ring 19. The driving gear 17 now pushes the sleeve gear ring 19 in the opposite direction, so that the sleeve gear ring 19 is deflected at the side end of the driving support seat 15, thereby adjusting the spray angle of the atomizing nozzle 25, so that the equipment can adjust the spray range according to the size of the photovoltaic glass;

[0041] Two multi-channel spray pipes 26 for conveying aqueous coating liquid are fixedly installed at the top of the tiltable bracket 16, and two pipe sleeves 31 connected to the atomizing nozzle 25 are rotatably installed at the bottom of each multi-channel spray pipe 26;

[0042] Two displacement adjustment slides 27 for pushing the pipe cover 31 to rotate are slidably installed at the top of the tiltable bracket 16. Two multi-stage telescopic pneumatic telescopic rods 28 are fixedly installed on the side ends of each displacement adjustment slide 27. Two rotary push connecting rods 29 are rotatably installed inside each displacement adjustment slide 27. The side ends of each rotary push connecting rod 29 are rotatably connected to the pipe cover 31. One of the rotary push connecting rods 29 is a compressible multi-stage design. The pipe cover 31 is connected through two rotary push connecting rods 29, and a multi-stage compressed rotary push connecting rod 29 is connected on the pipe cover 31 on the side close to the image module 21. When the displacement adjustment slide 27 is driven by the pneumatic telescopic rod 28 to slide horizontally, the displacement adjustment slide 27 first squeezes one of the compressible push-rotation connecting rods 29 without pushing the pipe cover 31 to rotate. At the same time, the other pipe cover 31 is directly connected to the displacement adjustment slide 27 through the push-rotation connecting rod 29. The movement of the displacement adjustment slide 27 directly pushes the pipe cover 31 to rotate, and the pipe cover 31 away from the two sides of the image module 21 is rotated and closed, blocking the corresponding atomizing nozzle 25 at the bottom, and cooperating with the angle deflection of the tiltable bracket 16 to spray and coat photovoltaic glass of different sizes;

[0043] Each pipe sleeve 31 is fixedly installed with an inner lining leaf plate 32 aligned with the multi-channel spray pipe 26, and a nylon filter membrane 34 that rotates synchronously with the pipe sleeve 31 is fixedly installed on the top of each inner lining leaf plate 32. Two synchronization rods 33 are fixedly installed inside each multi-channel spray pipe 26, and a mounting hole for docking with the nylon filter membrane 34 is opened inside each synchronization rod 33. At the same time, each synchronization rod 33 is aligned with the inside of the pipe sleeve 31, and the synchronization rod 33 is installed at the position docking with the pipe sleeve 31. The aqueous coating liquid transported inside the multi-channel spray pipe 26 is filtered by the synchronization rod 33 to ensure the quality of spray coating. The pipe sleeve 31 is rotated to drive the pipe sleeve 31 to drive the nylon filter membrane 34 to rotate on the surface of the synchronization rod 33, and the bottom end of the nylon filter membrane 34 rubs against the surface of the synchronization rod 33, so that the nylon filter membrane 34 scrapes the attachments on the surface of the synchronization rod 33 to prevent the synchronization rod 33 from being blocked and affecting the spraying amount of the atomizing nozzle 25.

[0044] The two inner walls of the coating box 12 are both provided with synchronously rotating driving screws 35, and the surface of each driving screw 35 is rotatably installed with a horizontally sliding sliding adjustment block 36. The side ends of the two sliding adjustment blocks 36 are provided with scraper assemblies, which include a multi-section compression rod 37, a connecting frame 38 and a coating scraper strip 39. By rotating the driving screw 35, the multi-channel spray pipe 26 is pushed to slide horizontally on the inner wall of the coating box 12. At the same time, the two multi-section compression rods 37 push the connecting frame 38 to slide vertically on the side ends of the sliding adjustment block 36, driving the coating scraper strip 39 to align with the surface of the photovoltaic glass. When the image module 21 detects the location of the defect, the coating scraper strip 39 is moved to spread the coating solution evenly on the glass surface to ensure the quality of the coating.

[0045] Working principle:

[0046] The first step is to assemble the coating device according to the design requirements to ensure that all components are firmly connected and the pipelines are well sealed. The photovoltaic glass to be coated is placed on the conveying roller group of the loading rack 11. The glass enters the coating box 12 under the drive of the conveying roller group. Before entering the coating area, a cleaning brush is used to clean the surface of the glass to remove dust and impurities on the surface. A coating liquid storage tank 13 is installed on the top of the coating box 12. Two interfaces are installed on the top of the coating liquid storage tank 13. The aqueous coating solution is added into the coating liquid storage tank 13 for storage, and the coating box 12 is fed into the coating box 12 through the coating liquid storage tank 13. At the same time, a drying box 14 is fixedly installed on the side end of the coating box 12. After the aqueous coating is completed, a plurality of heating components are installed inside the drying box 14 to heat up the surface of the glass for rapid drying.

[0047] The end of the driving gear 17 is connected to the output shaft of the motor to drive the two driving gears 17 to rotate at the side end of the driving support seat 15. The surface of the driving gear 17 is connected to the sleeve gear ring 19. The current driving gear 17 pushes the sleeve gear ring 19 in the opposite direction, so that the sleeve gear ring 19 is deflected at the side end of the driving support seat 15, thereby adjusting the spray angle of the atomizing nozzle 25, allowing the equipment to adjust the spray range according to the size of the photovoltaic glass. When the displacement adjustment slide 27 is driven by the pneumatic telescopic rod 28 to slide horizontally, the position The displacement adjustment slide 27 first squeezes one of the compressible push-rotate links 29 without pushing the pipe sleeve 31 to rotate. At the same time, the other pipe sleeve 31 is directly connected to the displacement adjustment slide 27 through the push-rotate link 29. The movement of the displacement adjustment slide 27 directly pushes the pipe sleeve 31 to rotate, and the pipe sleeves 31 away from both sides of the image module 21 are rotated and closed to block the atomizing nozzle 25 corresponding to the bottom end. In conjunction with the angle deflection of the tiltable bracket 16, photovoltaic glasses of different sizes are sprayed and coated.

[0048] In the second step, the aqueous coating liquid is sprayed onto the surface of the photovoltaic glass through the multiple atomizing nozzles 25 at the bottom of the tiltable bracket 16. The aqueous coating liquid can form a uniform and transparent film on the surface of the photovoltaic glass, which can effectively reduce the reflection of light on the glass surface and increase the transmittance of light. The production process is simple, which is conducive to ensuring the quality consistency of the photovoltaic glass.

[0049] The water-based coating liquid uses water as the main solvent, which greatly reduces the use of organic solvents, thereby significantly reducing the emission of VOCs and reducing the damage to the environment during the production process. At the same time, compared with the solvent-based coating liquid, the water-based coating liquid is more easily rinsed away by water when cleaning the equipment, and does not require the use of a large amount of organic solvents for cleaning, thereby reducing the pollutant content of the cleaning wastewater.

[0050] By installing the synchronization rod 33 at the position where the pipeline cover 31 is connected, the aqueous coating liquid transported inside the multi-channel spray pipe 26 is filtered by the synchronization rod 33 to ensure the quality of the spray coating. By rotating the pipeline cover 31, the pipeline cover 31 drives the nylon filter membrane 34 to rotate on the surface of the synchronization rod 33. The bottom end of the nylon filter membrane 34 rubs against the surface of the synchronization rod 33 to scrape the attachments on the surface of the synchronization rod 33 to prevent the synchronization rod 33 from being blocked and affecting the spraying amount of the atomizing nozzle 25. By driving the rotation of the screw rod 35, the multi-channel spray pipe 26 is pushed to slide horizontally on the inner wall of the coating box 12. At the same time, the two multi-section compression rods 37 push the connecting frame 38 to slide vertically on the side end of the sliding adjustment block 36, driving the coating scraper 39 to align with the surface of the photovoltaic glass. When the image module 21 detects the position of the defect, the coating scraper 39 is moved to evenly spread the coating solution on the glass surface to ensure the quality of the coating.

[0051] The examples of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A water-based coating device for photovoltaic glass production, comprising a loading rack (11), a coating box (12), a coating liquid storage tank (13) and a drying box (14), characterized in that: A spray assembly is fixedly installed inside the coating box (12), and the spray assembly includes a driving support seat (15), a tiltable bracket (16) and an atomizing nozzle (25). A detection assembly is fixedly installed inside the tiltable bracket (16), and the detection assembly includes an image module (21), a transmission line (22), a lens (23) and a flow shield (24). The flow shield (24) is an oblique outward expansion design.

2. A water-based coating device for photovoltaic glass production as claimed in claim 1, characterized in that: The top of the coating liquid storage tank (13) is equipped with two interfaces, the interior of the coating liquid storage tank (13) stores aqueous coating liquid, and the side end of the coating liquid storage tank (13) is equipped with two delivery pipes connected to the coating box (12).

3. A water-based coating device for photovoltaic glass production as claimed in claim 1, characterized in that: A driving gear (17) rotatably connected to the tiltable bracket (16) is fixedly mounted on the two side ends of each driving support seat (15); a metal pipe (18) for conveying water-based coating liquid is arranged inside each driving gear (17); and a sleeve gear ring (19) rotatably connected to the driving gear (17) is arranged inside each tiltable bracket (16).

4. A water-based coating device for photovoltaic glass production as claimed in claim 1, characterized in that: Two multi-channel spray pipes (26) for conveying aqueous coating liquid are fixedly mounted on the top of the tiltable support (16), and two pipe sleeves (31) connected to the atomizing nozzle (25) are rotatably mounted on the bottom of each multi-channel spray pipe (26).

5. The aqueous coating device for photovoltaic glass production according to claim 1, characterized in that: Two displacement adjustment slides (27) for pushing the pipe cover (31) to rotate are slidably mounted on the top of the tiltable bracket (16), and two multi-stage telescopic pneumatic telescopic rods (28) are fixedly mounted on the side end of each displacement adjustment slide (27).

6. A water-based coating device for photovoltaic glass production as claimed in claim 5, characterized in that: Two rotary push connecting rods (29) are rotatably mounted inside each displacement adjustment slide (27), and the side end of each rotary push connecting rod (29) is rotatably connected to the pipeline sleeve (31), and one of the rotary push connecting rods (29) is a compressible multi-section design.

7. A water-based coating device for photovoltaic glass production as claimed in claim 4, characterized in that: An inner lining plate (32) aligned with the multi-channel spray pipe (26) is fixedly installed inside each of the pipeline envelopes (31), and a nylon filter membrane (34) rotating synchronously with the pipeline envelope (31) is fixedly installed on the top of each of the inner lining plates (32).

8. The aqueous coating device for photovoltaic glass production as claimed in claim 4, characterized in that: Two synchronization rods (33) are fixedly installed inside each of the multi-channel spray pipes (26), and a mounting hole for docking with the nylon filter membrane (34) is opened inside each of the synchronization rods (33). At the same time, each of the synchronization rods (33) is aligned with the inside of the pipeline sleeve (31).

9. The aqueous coating device for photovoltaic glass production according to claim 1, characterized in that: Both inner side walls of the coating box (12) are provided with synchronously rotating driving screws (35), and a horizontally sliding sliding adjustment block (36) is rotatably mounted on the surface of each driving screw (35).

10. The aqueous coating device for photovoltaic glass production as claimed in claim 9, characterized in that: The side ends of the two sliding adjustment blocks (36) are each provided with a scraper assembly, and the scraper assembly comprises a multi-section compression rod (37), a connecting frame (38) and a coating scraper strip (39).

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