High-uniformity spraying device and spraying method for solar photovoltaic quartz diffusion tube

Abstract

The invention discloses a high-uniformity spraying device and method for a solar photovoltaic quartz diffusion tube, and relates to the technical field of spraying of photovoltaic quartz diffusion tubes. The device comprises a conveying mechanism and a spraying and drying mechanism. The conveying mechanism comprises a first input belt, two first output belts, a second input belt and two second output belts; and the spraying and drying mechanism comprises a cross, a shaft rod, an insertion rotating assembly, an insertion driven assembly and a spraying and drying module. The method comprises the following steps: taking the quartz diffusion tube, carrying out surrounding spraying and drying by using the spraying and drying unit, rotating the quartz diffusion tube during spraying, and outputting the quartz diffusion tube after spraying and drying are completed. According to the spraying device, the quartz diffusion tube which is not sprayed is input through the input belt, then the spraying and drying mechanism is used for spraying the quartz diffusion tube back and forth around the quartz diffusion tube and drying the quartz diffusion tube, and then the sprayed quartz diffusion tube is output, so that the problems of non-uniform spraying, paint sagging, low automation degree and the like in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of quartz diffusion tube spraying for photovoltaics, in particular to a high-uniformity spraying device and method for quartz diffusion tubes for solar photovoltaics. BACKGROUND

[0002] In the production process of silicon solar cell pieces, single and polycrystalline silicon pieces need to be treated by diffusion process, and the diffusion process mainly uses quartz furnace tubes and quartz boats and other quartz devices as carriers to meet the characteristics of high purity, high temperature resistance and acid and alkali resistance of silicon pieces.

[0003] However, in the existing technology, the spraying device usually clamps and rotates the pipe during processing, and the wet coating easily flows along the arc surface when rotating, causing uneven local spraying, and the clamping force is difficult to control, which can easily scratch the surface of the pipe. Due to the inability to dry quickly during the spraying process, it is not possible to efficiently spray multiple thin layers to achieve uniform spraying. It is not possible to automatically clamp and spray quartz diffusion tubes and dry them together, and then automatically unload and output.

[0004] Therefore, we provide a high-uniformity spraying device and method for quartz diffusion tubes for solar photovoltaics to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a high-uniformity spraying device and method for quartz diffusion tubes for solar photovoltaics, which inputs an un-sprayed quartz diffusion tube, sprays and dries it around the quartz diffusion tube with a spraying and drying mechanism, and then outputs the sprayed quartz diffusion tube, solving the problems of uneven spraying, coating sagging, and low automation.

[0006] To solve the above technical problems, the present application is realized by the following technical scheme: A high-uniformity spraying device for quartz diffusion tubes for solar photovoltaics, comprising a conveying mechanism and a spraying and drying mechanism. The conveying mechanism comprises input belts symmetrically arranged on the left and right sides of the spraying and drying mechanism, and output belts arranged on the upper and lower sides of each input belt. The spraying and drying mechanism comprises a cross, a shaft, a plug-in rotating assembly, a plug-in driven assembly and a spraying and drying module, the cross is symmetrically arranged at both ends of the shaft, each support of the cross is an electrically controlled telescopic rod, the plug-in rotating assembly and the plug-in driven assembly are respectively arranged at the outermost position of each set of symmetrically arranged electrically controlled telescopic rods on the inside of the cross at both ends of the shaft and are oppositely arranged on the same straight line. The spraying and drying module comprises a displacement groove rod, a driving structure and a spraying and drying unit, the displacement groove rod is fixed at the innermost end of the inner side of each of the two electrically-controlled telescopic rods symmetrically arranged on each group of the two electrically-controlled telescopic rods at two ends, the spraying and drying unit can be sleeved outside the plug-in rotating assembly and the plug-in driven assembly during movement, and the driving structure is arranged on the displacement groove rod to drive the spraying and drying unit to move.

[0007] The application is further provided that the input belt is provided with two, including a first input belt and a second input belt, the output belt is provided with four, including two first output belts and two second output belts, the first input belt and the second input belt are symmetrically arranged at the middle height positions on the left and right sides of the spraying and drying mechanism, the two first output belts are arranged above and below the first input belt, and the two second output belts are arranged above and below the second input belt.

[0008] The application is further provided that one spraying and drying unit is respectively installed on the four groups of corresponding electrically-controlled telescopic rods on each of the two crossbars, each of the spraying and drying units is numbered, two adjacent spraying and drying units correspond to the first input belt and the two first output belts on the left side, and the other two adjacent spraying and drying units correspond to the second input belt and the two second output belts on the right side. Each of the spraying and drying units outputs the quartz diffusion tube dried by spraying and drying from a fixed output belt.

[0009] The application is further provided that the first input belt, the first output belt, the second input belt and the second output belt are all the same in structure, the first input belt is provided with limit placing strips at equal intervals on the outer surface, and the upper surface of the limit placing strip is provided with an arc-shaped groove. The first input belt and the second input belt are provided with a correcting device on the two sides of the input end, and the correcting device is used for correcting the quartz diffusion tube placed on the arc-shaped groove to the central position.

[0010] The application is further provided that the plug-in rotating assembly comprises a first square sleeve, a first square telescopic rod, a first servo motor, a first screw rod, a second servo motor and a first adaptive plug, the first servo motor is inlaid and fixed on the inner bottom of the first square sleeve, the first screw rod is connected to the rotating shaft of the first servo motor, the first square telescopic rod is movably inserted into the front end of the first square sleeve from the tail end, and the first screw rod is screwed into the tail end of the first square telescopic rod, the second servo motor is inlaid in the front end of the first square telescopic rod, the rotating shaft of the second servo motor is sleeved with a bearing and the bearing is fixed, the rotating shaft of the second servo motor is connected with the first adaptive plug, and the front end of the first square sleeve is provided with a jacking rod near the edge position of the four side walls.

[0011] The present invention is further configured such that the plug-in driven component includes a second square sleeve, a second square telescopic rod, a third servo motor, a second lead screw, a driven shaft, and a second adaptive plug. The structure and installation method of the second square sleeve, the second square telescopic rod, the third servo motor, and the second lead screw are the same as those of the first square sleeve, the first square telescopic rod, the first servo motor, and the first lead screw. Two bearings are fitted on the driven shaft, and both bearings are installed inside the front end of the second square telescopic rod. The front end of the driven shaft is connected to a second adaptive plug, and the second adaptive plug has the same structure as the first adaptive plug.

[0012] The present invention is further configured such that the first adaptive plug includes a plug rod, a large V-shaped spring piece and a magnetic piece, the outer wall of the plug rod is evenly provided with four mounting grooves, the large V-shaped spring piece is provided with a rotating shaft on both sides of the middle position and the rotating shaft is rotatably mounted on the two side walls of the middle position in the mounting groove, and a magnetic piece is embedded in the bottom of the mounting groove near the front end position. The large V-shaped spring sheet has a sponge block on the upper surface of the front end and a row of small rollers on the upper surface of the rear end.

[0013] The present invention is further configured such that the spraying and drying unit includes a spraying sleeve and two drying conical cylinders symmetrically arranged on both sides of the spraying sleeve. Four sets of atomizing paint nozzles are evenly distributed on the circumference of the spraying sleeve on the spraying sleeve. The large-diameter ends of the drying conical cylinders on the drying conical cylinders are all facing the spraying sleeve. The inner diameter of the large-diameter end of the drying conical cylinder is larger than the outer diameter of the spraying sleeve. A heating wire is wound around the outer wall of the drying conical cylinder. The axes of the spraying sleeve and the two drying conical cylinders are on the same straight line. A first slider and a second slider are respectively provided on the same side of the spraying sleeve and the two drying conical cylinders. The first slider and the second slider are attached and fixed together. The driving structure includes two limiting slide rods and a driving screw. The outer ends of the first and second sliders are inserted into the grooves of the displacement groove rod. The two limiting slide rods move through the first and second sliders, while the driving screw spirally passes through the middle position of the first and second sliders. The driving screw is driven by a servo motor.

[0014] A high-uniformity spraying method for quartz diffuser tubes used in solar photovoltaic systems is employed using the aforementioned high-uniformity spraying device for quartz diffuser tubes used in solar photovoltaic systems. The specific steps are as follows: S1: The uncoated quartz diffuser tube is placed into the input end of the first input belt and the second input belt for transport. The cross is driven to rotate by the rotating shaft. The plug-in rotating assembly 7 and the corresponding plug-in driven assembly that have not picked up the quartz diffuser tube will rotate to the output end position of the first input belt 1 or the second input belt to pick up the uncoated quartz diffuser tube. The drive structure drives the spraying and drying unit to move back and forth between the plug-in rotating assembly and the plug-in driven assembly and spray and dry the quartz diffuser tube. S2: In step S1, the spraying and drying process is carried out. The inserted rotating component rotates the quartz diffuser tube. The spraying and drying structure sprays back and forth outside the quartz diffuser tube 3-10 times. After the spraying is completed, the spraying and drying structure continues to move back and forth, but at this time only the drying function is activated and the spraying function is canceled. S3: During the spraying and drying process, the electrically controlled telescopic rod is in its shortest retracted state. After the spraying and drying are completed, the plug-in rotating component and the corresponding plug-in driven component are moved to the top of the input end of the first output belt or the second output belt to lower the sprayed and dried quartz diffuser tube, and output it from the first output belt or the second output belt. S4: In step S3, after the quartz diffuser tube is lowered, the empty plug-in rotating assembly and the corresponding plug-in driven assembly will move again to the output end position of the first input band and the second input band, take the uncoated quartz diffuser tube, and perform the next round of coating.

[0015] The present invention is further configured such that a spraying and drying unit is installed on each of the four sets of corresponding electrically controlled telescopic rods on the two crosses, and each set of spraying and drying units is numbered, wherein two adjacent spraying and drying units correspond to the first input belt and two first output belts on the left, and the other two adjacent spraying and drying units correspond to the second input belt and two second output belts on the right. Each spraying and drying unit has only one first output belt or second output belt corresponding to it. When the spraying and drying unit is spraying and drying, the electrically controlled telescopic rod is in the shortest extension state.

[0016] The present invention has the following beneficial effects: 1. This invention transports an uncoated quartz diffuser tube via first and second input belts. After being centered by a calibration device, the cross-shaped mechanism rotates, causing the empty insertion rotating assembly and insertion driven assembly to rotate above the output ends of the first and second input belts and insert into the inner cavities at both ends of the quartz diffuser tube. An adaptive plug tightens the tube wall, and a servo motor drives the quartz diffuser tube to rotate. The spraying and drying unit reciprocates along the displacement groove rod to spray and dry the exterior of the quartz diffuser tube. After spraying, it continues to reciprocate for further drying. The simultaneous rotation of the quartz diffuser tube and the multiple reciprocating spraying by the spraying and drying unit achieves multi-layer thin spraying on the exterior of the quartz diffuser tube, forming an interlaced spiral coating. This method ensures uniform spraying and prevents paint dripping. Continuous drying during and after spraying improves spraying efficiency while accelerating drying speed.

[0017] 2. During the spraying process, there will be scattered atomized paint. Since the drying cone has the effect of gathering paint, it can effectively prevent the paint from sticking to the inner wall of the drying cone. Specifically, the inner diameter of the large-diameter end of the drying cone is larger than the outer diameter of the spraying sleeve. External gas will enter from the edge of the large-diameter end of the drying cone and flow along the inner wall to reduce the degree of atomized paint adhering to the inner wall of the drying cone. This allows the floating paint to further adhere to the surface of the quartz diffuser tube, reducing paint loss and improving spraying efficiency.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a high-uniformity spraying device for quartz diffuser tubes used in solar photovoltaic applications.

[0021] Figure 2 This is a schematic diagram of the spray drying mechanism.

[0022] Figure 3 This is an exploded structural diagram of the plug-in rotating assembly and plug-in driven assembly of the spray drying mechanism.

[0023] Figure 4 This is an exploded structural diagram of the spraying and drying unit of the spraying and drying mechanism.

[0024] Figure 5 This is a schematic diagram of the structure of the first adaptive plug.

[0025] Figure 6 This is a schematic diagram of the insert rod.

[0026] Figure 7 This is a schematic diagram of the structure of the drying conical cylinder.

[0027] Figure 8 This is a schematic diagram of the structure of the spray-painted sleeve.

[0028] The attached diagram lists the components represented by each number as follows: 1. First input belt; 2. First output belt; 3. Second input belt; 4. Second output belt; 5. Spraying and drying mechanism; 6. Cross; 61. Electrically controlled telescopic rod; 62. Shaft; 7. Plug-in rotating assembly; 71. First square sleeve; 711. Top rod; 72. First servo motor; 721. First lead screw; 73. First square telescopic rod; 74. Second servo motor; 75. First adaptive plug; 751. Insert rod; 752. Mounting slot; 753. Large V-shaped spring; 754. Sponge block; 755. Small roller; 756 8. Magnet sheet; 8. Spraying and drying unit; 81. Drying conical cylinder; 811. Drying conical cylinder; 812. Heating wire; 813. Second slider; 82. Spraying sleeve; 821. Spraying sleeve; 822. Atomizing paint nozzle; 823. First slider; 9. Insertion driven assembly; 91. Second square sleeve; 92. Second servo motor; 921. Second lead screw; 93. Second square telescopic rod; 94. Driven shaft; 95. Second adaptive plug; 10. Displacement groove rod; 101. Limiting slide rod; 102. Drive lead screw. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-8 The present invention is a high uniformity spraying device for quartz diffuser tubes for solar photovoltaic applications, comprising a conveying mechanism and a spraying and drying mechanism 5; The conveying mechanism includes a first input belt 1, two first output belts 2, a second input belt 3, and two second output belts 4. The first input belt 1 is located at the middle height position on the left side of the spraying and drying mechanism 5, and there is one first output belt 2 above and below the first input belt 1. The second input belt 3 is located at the middle height position on the right side of the spraying and drying mechanism 5, and there is one second output belt 4 above and below the second input belt 3. Since the spraying and drying mechanism 5 cannot rotate too much, it is set to about 90 degrees here. A first input band 1 and two first output bands 2 and a second input band 3 and two second output bands 4 are set symmetrically to achieve close-range acquisition of the quartz diffuser tube and output of the sprayed quartz diffuser tube.

[0031] The spraying and drying mechanism 5 includes a cross 6, a shaft 62, a plug-in rotating assembly 7, a plug-in driven assembly 9, and a spraying and drying module. Each shaft 62 has a cross 6 fitted near both ends. Each support of the cross 6 is an electrically controlled telescopic rod 61. The two electrically controlled telescopic rods 61 of the two crosses 6 are corresponding to each other and lie in the same plane. The outermost inner ends of the telescopic rods of the corresponding two electrically controlled telescopic rods 61 are respectively provided with a plug-in rotating assembly 7 and a plug-in driven assembly 9 on the same straight line. The spray drying module includes a displacement groove rod 10, a drive structure, and a spray drying unit 8. The two ends of the displacement groove rod 10 are respectively fixed to the innermost positions of the telescopic rods of the corresponding two electrically controlled telescopic rods 61. The drive structure is installed on the displacement groove rod 10 and drives the spray drying unit 8 to move. The spray drying unit 8 is sleeved on the plug-in rotating assembly 7 or the plug-in driven assembly 9. The spray drying unit 8 can move from the plug-in rotating assembly 7 to the plug-in driven assembly 9 and spray dry the quartz diffuser tube fixed between the two.

[0032] When picking up the quartz diffuser tube, move the insertion rotating assembly 7 and the insertion driven assembly 9 (which are in the same group) to the top of the output end of the first input belt 1 or the second input belt 3, and start picking up the quartz diffuser tube (at this time, the electrically controlled telescopic rod 61 is in the extended state). After the insertion is positioned on the quartz diffuser tube, the electrically controlled telescopic rod 61 can be retracted (to its most retracted state), so that the quartz diffuser tube is detached from the input belt. No matter how the cross 6 is rotated, the quartz diffuser tube will not touch the input belt or the output belt. At this time, the spraying and drying process is started. The spraying and drying unit 8 moves back and forth on the quartz diffuser tube (without contact) to achieve circumferential spraying. The quartz diffuser tube rotates during the spraying process, making the spraying more uniform. During spraying, it can also be dried immediately to improve the adhesion of each sprayed layer, and multiple layers of spraying are performed back and forth.

[0033] A spraying and drying unit 8 is installed on each of the four sets of corresponding electrically controlled telescopic rods 61 on the two crosses 6. Each set of spraying and drying units 8 is numbered. Two adjacent spraying and drying units 8 correspond to the first input band 1 and two first output bands 2 on the left side, and the other two adjacent spraying and drying units 8 correspond to the second input band 3 and two second output bands 4 on the right side. Each of the spraying and drying units 8 outputs the sprayed and dried quartz diffuser tube from a fixed output band.

[0034] The numbering system assigns each spraying and drying unit 8 a specific input belt to pick up the quartz diffuser tube, and then removes the sprayed quartz diffuser tube from a corresponding output belt. This ensures that the rotation angle of the cross 6 is small, so the upper pipes (paint pipes) and wires are not affected by the rotation. Due to the small rotation angle, as long as the design allows for back-and-forth movement, the pipeline can still process paint and supply power. The discharge pipe uses a special thin pipe for spraying, which is easy to bend but will not fold and affect the discharge.

[0035] The first input band 1, the first output band 2, the second input band 3, and the second output band 4 have the same structure. The outer surface of the first input band 1 is provided with limit placement strips at equal intervals, and the upper surface of the limit placement strips is provided with arc-shaped grooves. The first input band 1 and the second input band 3 are provided with correction devices on both sides of the input end. The correction devices are used to correct the quartz diffuser tube placed on the arc-shaped groove to the center position.

[0036] The quartz diffuser tube is placed in the arc-shaped groove. Since both the input and output belts are horizontally positioned, they will not flip out. The correction device is like having two symmetrically arranged push cylinders on both sides of the input belt, which positions the middle of the quartz diffuser tube in the middle of the arc-shaped groove so that the insertion rotating component 7 and the insertion driven component 9 can be accurately placed next to both ends of the quartz diffuser tube later.

[0037] The plug-in rotating assembly 7 includes a first square sleeve 71, a first square telescopic rod 73, a first servo motor 72, a first lead screw 721, a second servo motor 74, and a first adaptive plug 75. The first servo motor 72 is embedded and fixed in the bottom of the first square sleeve 71. The first lead screw 721 is connected to the shaft of the first servo motor 72. The tail end of the first square telescopic rod 73 is movably inserted from the front end of the first square sleeve 71, and the first lead screw 721 is screwed into the tail end of the first square telescopic rod 73. The second servo motor 74 is embedded in the front end of the first square telescopic rod 73. A bearing is sleeved on the shaft of the second servo motor 74 and fixed to the bearing. The first adaptive plug 75 is connected to the shaft of the second servo motor 74. A top rod 711 is provided at the front end of the first square sleeve 71 near the edges of the four side walls.

[0038] During the picking process, the first servo motor 72 drives the first lead screw 721 to rotate, pushing the first square telescopic rod 73 outward. This causes the first adaptive plug 75 to move outward and insert into the inner cavity of the quartz diffuser end, thus locking it in place. Similarly, the driven assembly 9 is inserted into the inner cavity of the other end of the quartz diffuser in the same manner. The second servo motor 74 drives the first adaptive plug 75 to rotate, thus rotating the quartz diffuser during spraying.

[0039] The plug-in driven assembly 9 includes a second square sleeve 91, a second square telescopic rod 93, a third servo motor 92, a second lead screw 921, a driven shaft 94, and a second adaptive plug 95. The structure and installation method of the second square sleeve 91, the second square telescopic rod 93, the third servo motor 92, and the second lead screw 921 are the same as those of the first square sleeve 71, the first square telescopic rod 73, the first servo motor 72, and the first lead screw 721. Two bearings are fitted on the driven shaft 94, and both bearings are installed inside the front end of the second square telescopic rod 93. The front end of the driven shaft 94 is connected to the second adaptive plug 95, which has the same structure as the first adaptive plug 75.

[0040] The third servo motor 92 inside the second square sleeve 91 drives the second lead screw 921 to rotate, so as to extend the second square telescopic rod 93. The second adaptive plug 95 is installed on the driven shaft 94 and will rotate with the quartz diffuser tube, thereby driving the second adaptive plug 95 to rotate.

[0041] The first adaptive plug 75 includes a plug rod 751, a large V-shaped spring 753, and a magnetic piece 756. The plug rod 751 has four mounting slots 752 evenly distributed around its outer wall. The large V-shaped spring 753 has two rotating shafts on both sides of its middle position, and the rotating shafts are rotatably mounted on the two side walls of the middle position in the mounting slot 752. The magnetic piece 756 is embedded in the bottom of the mounting slot 752 near the front end. The large V-shaped spring sheet 753 has a sponge block 754 on its front upper surface and a row of small rollers 755 on its rear upper surface.

[0042] Because of the presence of magnet 756, even when not inserted into the quartz diffuser tube, as Figure 5 As shown, after insertion, the rear end of the large V-shaped spring 753 is squeezed downwards, while the front end of the large V-shaped spring 753 moves upwards and abuts against the inner wall of the quartz diffuser tube. With continued insertion, the large V-shaped spring 753 forms a large angle. Because the four large V-shaped springs 753 form a circumference, they are effectively supported inside the quartz diffuser tube, thus providing fixation without affecting external spraying. The front sponge block 754 provides friction, and the small roller 755 at the rear facilitates complete insertion of the rear end.

[0043] After the coating and drying process is complete, when unplugging the adaptive plug, to prevent excessive pulling force on one end of the adaptive plug, pull the quartz diffuser tube to one end. The push rod 711 is positioned at both ends of the quartz diffuser tube to limit its lateral displacement. After the adaptive plug is fully pulled out, the quartz diffuser tube will automatically fall and be transported away.

[0044] The spraying and drying unit 8 includes a spraying sleeve 82 and two drying conical cylinders 81 symmetrically arranged on both sides of the spraying sleeve 82. Four sets of atomizing paint nozzles 822 are evenly distributed on the circumference of the spraying sleeve 821 on the spraying sleeve 82. The large-diameter ends of the drying conical cylinders 811 on the drying conical cylinders 81 face the spraying sleeve 821. The inner diameter of the large-diameter end of the drying conical cylinder 811 is larger than the outer diameter of the spraying sleeve 821. A heating wire 812 is wound around the outer wall of the drying conical cylinder 811. The axes of the spraying sleeve 821 and the two drying conical cylinders 811 are on the same straight line. A first slider 823 and a second slider 813 are respectively provided on the same side of the spraying sleeve 821 and the two drying conical cylinders 811. The first slider 823 and the second slider 813 are attached and fixed together. The driving structure includes two limiting slide rods 101 and a driving screw 102. The outer ends of the first slider 823 and the second slider 813 are inserted into the groove of the displacement groove rod 10. The two limiting slide rods 101 move through the first slider 823 and the second slider 813, while the driving screw 102 spirally passes through the middle position of the first slider 823 and the second slider 813. The driving screw 102 is driven by a driving servo motor.

[0045] Four sets of atomizing paint nozzles 822 are evenly distributed around the circumference of the spray sleeve 821, equivalent to four sets of double-line circumferential spraying (the quartz diffuser tube rotates), forming a twisted-wire-like spraying pattern with no gaps between them. Then, the quartz diffuser tube rotates in the opposite direction to perform reverse double-line circumferential spraying, resulting in more uniform layering. In addition, the symmetrical drying cones 811 on both sides of the spraying process heat the unsprayed areas in front and the areas that have just been sprayed behind, heating the air to improve drying, resulting in immediate drying (no flowing paint). After spraying, the process is repeated several times to ensure thorough drying. The servo motor drives the drive screw 102 to move the first slider 823 and the second slider 813 back and forth, achieving uniform speed movement.

[0046] A high-uniformity spraying method for quartz diffuser tubes used in solar photovoltaic systems is employed using the aforementioned high-uniformity spraying device for quartz diffuser tubes used in solar photovoltaic systems. The specific steps are as follows: S1: The uncoated quartz diffuser tube is placed into the input end of the first input belt 1 and the second input belt 3 for transport. The cross 6 is driven to rotate by the rotating shaft 62. The plug-in rotating assembly 7 and the corresponding plug-in driven assembly 9 that do not have quartz diffuser tubes are rotated to the output end position of the first input belt 1 or the second input belt 3 to pick up the uncoated quartz diffuser tube. The drive structure drives the spraying and drying unit 8 to move back and forth between the plug-in rotating assembly 7 and the plug-in driven assembly 9 to spray and dry the quartz diffuser tube. S2: In step S1, the spraying and drying process is carried out. The inserted rotating component 7 rotates the quartz diffuser tube. The spraying and drying structure sprays back and forth outside the quartz diffuser tube 3-10 times. After the spraying is completed, the spraying and drying structure continues to move back and forth, but at this time only the drying function is activated and the spraying function is canceled. S3: During the spraying and drying process, the electrically controlled telescopic rod 61 is in its shortest retracted state. After the spraying and drying are completed, the plug-in rotating component 7 and the corresponding plug-in driven component 9 are moved above the input end of the first output belt 2 or the second output belt 4 to lower the sprayed and dried quartz diffuser tube and output it from the first output belt 2 or the second output belt 4. S4: In step S3, after the quartz diffuser tube is lowered, the empty insertion rotating component 7 and the corresponding insertion driven component 9 will move again to the output end position of the first input band 1 and the second input band 3, take the uncoated quartz diffuser tube, and perform the next round of coating.

[0047] Spraying involves placing a horizontally positioned quartz diffuser tube and rotating it. The airflow on the surface of the diffuser tube helps to even out the uneven paint, resulting in higher spraying efficiency. Since there is no external clamping, there are no clamping marks on the external wall during spraying.

[0048] On each of the four sets of corresponding electrically controlled telescopic rods 61 on the two crosses 6, a spraying and drying unit 8 is installed. Each set of spraying and drying units is numbered. Two adjacent spraying and drying units correspond to the first input band 1 and two first output bands 2 on the left side, and the other two adjacent spraying and drying units 8 correspond to the second input band 3 and two second output bands 4 on the right side. Each spraying and drying unit 8 has only one first output band 2 or second output band 4 corresponding to it. When spraying and drying, the electrically controlled telescopic rod 61 of the spraying and drying unit 8 is in the shortest extension state.

[0049] The numbering system facilitates the management of quartz diffuser tubes during retrieval and output after spraying and drying. Precise control of spraying speed and time, as well as heating during and after spraying, effectively controls spraying quality and drying results.

[0050] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high uniformity spray coating device for quartz diffusion tubes for solar photovoltaics, characterized by: The conveying mechanism and the spraying and drying mechanism (5) are included; The conveying mechanism includes input belts symmetrically arranged on the left and right sides of the spraying and drying mechanism (5) and output belts symmetrically arranged on the upper and lower sides of each input belt; The spraying and drying mechanism (5) includes crossbars (6), shaft rods (62), plug-in rotating assemblies (7), plug-in driven assemblies (9) and spraying and drying modules, the crossbars (6) are symmetrically arranged at the two ends of the shaft rods (62), each support of the crossbar (6) is an electrically-controlled telescopic rod (61), the plug-in rotating assemblies (7) and the plug-in driven assemblies (9) are respectively arranged at the outermost positions on the inner sides of each set of symmetrically arranged electrically-controlled telescopic rods (61) on the crossbars (6) at the two ends of the shaft rods (62) and are oppositely arranged on the same straight line; The spraying and drying module includes displacement slot rods (10), a driving structure and spraying and drying units (8), the displacement slot rods (10) are fixed at the innermost positions on the inner sides of the telescopic rods of each set of symmetrically arranged electrically-controlled telescopic rods (61) at the two ends, the spraying and drying units (8) can be sleeved on the outer sides of the plug-in rotating assemblies (7) and the plug-in driven assemblies (9) during movement, and the driving structure is arranged on the displacement slot rod (10) to drive the spraying and drying unit (8) to move.

2. The high uniformity spray coating apparatus for quartz diffusion tubes for solar photovoltaic applications as claimed in claim 1, wherein, The input belts are provided with two first input belts (1) and two second input belts (3), the output belts are provided with four output belts, including two first output belts (2) and two second output belts (4), the first input belts (1) and the second input belts (3) are symmetrically arranged at the middle height positions on the left and right sides of the spraying and drying mechanism (5), the two first output belts (2) are arranged above and below the first input belts (1), and the two second output belts (4) are arranged above and below the second input belts (3).

3. The high uniformity spray coating apparatus for quartz diffusion tubes for solar photovoltaics of claim 2, wherein, Four sets of corresponding electrically-controlled telescopic rods (61) on the two crossbars (6) are respectively provided with one spraying and drying unit (8), each set of the spraying and drying units (8) is numbered, two adjacent spraying and drying units (8) correspond to the first input belt (1) and the two first output belts (2) on the left side, and the other two adjacent spraying and drying units (8) correspond to the second input belt (3) and the two second output belts (4) on the right side; Each spraying and drying unit (8) outputs the quartz diffusion tube dried by spraying and drying from a fixed output belt.

4. The high uniformity spray coating apparatus for quartz diffusion tubes for solar photovoltaic applications as claimed in claim 2, wherein, The first input belt (1), the first output belt (2), the second input belt (3) and the second output belt (4) are the same in structure, limit placement strips are equidistantly arranged on the outer surface of the first input belt (1), and an arc-shaped groove is arranged on the upper surface of each limit placement strip; The first input belt (1) and the second input belt (3) are provided with a correcting device on the two sides of the input end, and the correcting device is used for correcting the quartz diffusion tube placed on the arc-shaped groove to the central position.

5. The high uniformity spray coating apparatus for quartz diffusion tubes for solar photovoltaic applications as claimed in claim 1, wherein, The plug-in rotating component (7) comprises a first square sleeve (71), a first square telescopic rod (73), a first servo motor (72), a first screw rod (721), a second servo motor (74) and a first adaptive plug (75), the first servo motor (72) is inlaid and fixed in the bottom of the first square sleeve (71), the first screw rod (721) is connected to the rotating shaft of the first servo motor (72), the first square telescopic rod (73) is movably inserted into the front end of the first square sleeve (71) and the first screw rod (721) is spirally inserted into the tail end of the first square telescopic rod (73), the second servo motor (74) is inlaid in the front end of the first square telescopic rod (73), the rotating shaft of the second servo motor (74) is sleeved with a bearing and the bearing is fixed, the first adaptive plug (75) is connected to the rotating shaft of the second servo motor (74), and the front end of the first square sleeve (71) is provided with a jacking rod (711) near the position of the four side wall edges.

6. The high uniformity spray coating apparatus for quartz diffusion tubes for solar photovoltaics of claim 5, wherein, The plug-in driven component (9) comprises a second square sleeve (91), a second square telescopic rod (93), a third servo motor (92), a second screw rod (921), a driven shaft rod (94) and a second adaptive plug (95), the structures and installation modes of the second square sleeve (91), the second square telescopic rod (93), the third servo motor (92) and the second screw rod (921) are the same as those of the first square sleeve (71), the first square telescopic rod (73), the first servo motor (72) and the first screw rod (721), the driven shaft rod (94) is sleeved with two bearings, and the two bearings are installed in the front end of the second square telescopic rod (93), the front end of the driven shaft rod (94) is connected with the second adaptive plug (95), and the second adaptive plug (95) has the same structure as the first adaptive plug (75).

7. The high uniformity spray coating apparatus for quartz diffusion tubes for solar photovoltaics of claim 6, wherein, The first adaptive plug (75) comprises a plug rod (751), a large V-shaped elastic sheet (753) and a magnet sheet (756), four installation grooves (752) are uniformly arranged on the outer wall of the plug rod (751), rotating shafts are arranged on the two sides of the middle position of the large V-shaped elastic sheet (753) and are rotatably installed on the two side walls of the middle position of the installation grooves (752), and the magnet sheet (756) is inlaid on the bottom of the position close to the front end of the installation groove (752). The large V-shaped elastic sheet (753) is provided with a sponge block (754) on the upper surface of the front end and a row of small rollers (755) on the upper surface of the rear end.

8. The high uniformity spray coating apparatus for quartz diffusion tubes for solar photovoltaic applications as claimed in claim 1, wherein, The spraying and drying unit (8) comprises a spraying sleeve (82) and two drying conical sleeves (81) symmetrically arranged on both sides of the spraying sleeve (82), four groups of atomized coating nozzles (822) are evenly arranged on the wall of the spraying sleeve (821) of the spraying sleeve (82), the large-diameter end of the drying conical sleeve (811) on the drying conical sleeve (81) faces the spraying sleeve (821), the inner diameter of the large-diameter end of the drying conical sleeve (811) is larger than the outer diameter of the spraying sleeve (821), heating wires (812) are wound on the outer wall of the drying conical sleeve (811), the axes of the spraying sleeve (821) and the two drying conical sleeves (811) are on the same line, the first sliding block (823) and the second sliding block (813) are arranged on the same side of the spraying sleeve (821) and the two drying conical sleeves (811) respectively, and the first sliding block (823) and the second sliding block (813) are attached and fixed together. The driving structure comprises two limiting sliding rods (101) and a driving screw rod (102), the outer side ends of the first sliding block (823) and the second sliding block (813) are inserted into the slots of the displacement slot rod (10), the two limiting sliding rods (101) movably penetrate the first sliding block (823) and the second sliding block (813), and the driving screw rod (102) spirally penetrates the middle positions of the first sliding block (823) and the second sliding block (813), and the driving screw rod (102) is driven by a driving servo motor.

9. A high uniformity spray coating method for solar photovoltaic quartz diffusion tubes, characterized by, The quartz diffusion tube with high uniformity for solar photovoltaic is sprayed by using the spraying device of any one of claims 2-8, and the specific steps are as follows: S1: the quartz diffusion tube without spraying is placed into the first input belt (1) and the second input belt (3) from the input end for conveying, the cross (6) is driven to rotate by the rotating shaft (62), the plug-in rotating assembly (7) is rotated to the output end position of the first input belt (1) or the second input belt (3) on the corresponding plug-in driven assembly (9) without taking the quartz diffusion tube, the quartz diffusion tube without spraying is taken, and the driving structure drives the spraying and drying unit (8) to move back and forth between the plug-in rotating assembly (7) and the plug-in driven assembly (9) and spray and dry the quartz diffusion tube; S2: during the spraying and drying process in step S1, the plug-in rotating assembly (7) rotates the quartz diffusion tube, the spraying and drying structure sprays 3-10 times back and forth outside the quartz diffusion tube, after the spraying is completed, the spraying and drying structure continues to move back and forth, but only the drying function is started and the spraying function is cancelled; S3: during the spraying and drying process, the electric control telescopic rod (61) is in the shortest retracted state, after the spraying and drying are completed, the plug-in rotating assembly (7) and the corresponding plug-in driven assembly (9) are moved to the top of the first output belt (2) or the second output belt (4) input end to place the sprayed and dried quartz diffusion tube, and the quartz diffusion tube is output from the first output belt (2) or the second output belt (4). S4: After the quartz diffusion tube is put down in step S3, the empty plug-in rotating assembly (7) and the corresponding plug-in driven assembly (9) will be moved to the output end position of the first input belt (1) and the second input belt (3) again, the unsprayed quartz diffusion tube is taken, and the next round of spraying is performed.

10. The method of claim 9, wherein the method is used for solar photovoltaic quartz diffusion tube high uniformity spray coating. Four groups of corresponding electric control telescopic rods (61) are installed on two crossbars (6), and one spraying and drying unit (8) is installed on each group of electric control telescopic rods (61), and each group of spraying and drying units is numbered, wherein two adjacent spraying and drying units correspond to the left first input belt (1) and the two first output belts (2), and the other two adjacent spraying and drying units (8) correspond to the right second input belt (3) and the two second output belts (4). Each spraying and drying unit (8) corresponds to only one first output belt (2) or second output belt (4), and the electric control telescopic rod (61) is in the shortest telescopic state during spraying and drying of the spraying and drying unit (8).

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