A hand-held coating device for photovoltaic panels that is easy to assemble

Abstract

A hand-held coating device for photovoltaic panels is easy to assemble, comprising a middle plate, a connecting strip fixed on the middle plate, a flow divider installed on one side of the connecting strip, a plurality of pump outlets radially formed on the flow divider, an independent adjusting valve arranged for each pump outlet, a flexible hose connecting the adjusting valve to a spray pipe, a plurality of spray pipes arranged in a linear array and fixed in the middle plate, and the lower ends of the spray pipes extending below the middle plate, a coating sponge detachably installed below the middle plate, the lower end of the spray pipe embedded in a receiving groove of the coating sponge and fixed by interference fit, pump inlets arranged at both ends of the flow divider, a handle connecting mechanism arranged above the middle section of the connecting strip, a handle detachably connected to the handle connecting mechanism, and the angle between the handle and the coating device being adjusted by a gear engagement structure. The device can be quickly assembled, adjusted and disassembled, and the angle can be quickly adjusted on this basis, thereby greatly improving the coating construction efficiency of photovoltaic panels.

Description

Technical Field

[0001] This utility model relates to the field of coating device technology, specifically a handheld coating device for photovoltaic panels that is easy to assemble. Background Technology

[0002] As the core energy conversion component of a solar power generation system, the surface cleanliness of photovoltaic panels directly affects their photoelectric conversion efficiency. Studies have shown that:

[0003] (1) The deposition of dust particles on the panel surface will create an optical blocking effect, resulting in a significant reduction in incident light flux. In arid and dusty areas, the average annual power generation efficiency loss can reach 25%-35%;

[0004] (2) Organic pollutants (such as bird droppings, resins, etc.) not only cause a decrease in light absorption, but the acidic components in them can also corrode the anti-reflective coating on the surface.

[0005] (3) The uneven distribution of stains formed after precipitation will produce a "hot spot effect", and the local temperature rise may cause permanent damage to the battery cells.

[0006] To address this issue, the current cutting-edge technology involves coating the surface of photovoltaic panels with self-cleaning materials (such as hydrophobic coatings and photocatalytic coatings) to enhance their anti-pollution capabilities and self-cleaning performance. This technology has gradually gained market recognition and has a promising future.

[0007] As a result, the demand for self-cleaning coating maintenance for photovoltaic systems is constantly increasing. Existing self-cleaning coating equipment is mainly divided into two categories. One is large-scale automated equipment. Although this type of equipment has a high degree of intelligence and high efficiency, its transportation and deployment costs are high, and it has poor adaptability to mountainous / rooftop scenarios. Small power plants cannot afford the costs of equipment purchase and leasing, and it requires high professional skills from operators. The other type is handheld coating devices. This type of equipment has the advantages of low operating costs and strong adaptability. However, existing handheld coating devices have the following drawbacks: First, the modularity is low, and the assembly and adjustment time is long (the average assembly and adjustment time is more than 15 minutes), which greatly affects the construction efficiency. In the actual working environment, in order to save assembly time, workers will choose to assemble and carry the equipment for transportation, which indirectly causes the problem of inconvenient equipment transportation. Second, it lacks an angle adjustment mechanism, making it difficult to adapt to different angles of inclination, which affects efficiency.

[0008] Therefore, there is a need for a photovoltaic panel coating device that is easy to assemble, adjust, and disassemble, and also allows for rapid angle adjustment, thereby greatly improving the efficiency of photovoltaic panel coating and enhancing portability. Utility Model Content

[0009] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a handheld coating device for photovoltaic panels that is easy to assemble. In order to solve the above-mentioned technical problem, this utility model provides the following technical solution:

[0010] A handheld coating device for photovoltaic panels that is easy to assemble includes an intermediate plate, a connecting strip fixed on the intermediate plate, a distributor installed on one side of the connecting strip, and multiple pump outlets radially opened on the distributor. Each pump outlet is equipped with an independent regulating valve, which is connected to a spray nozzle via a flexible hose. The multiple spray nozzles are linearly arrayed and fixed through the intermediate plate, with their lower ends extending below the intermediate plate. A coating sponge is detachably installed below the intermediate plate, and the lower ends of the spray nozzles are embedded in the receiving groove of the coating sponge and fixed by interference fit. Pump inlets are provided at both ends of the distributor, and the pump inlets are connected to an adjustable flow water pump via a main pipe. A handle connection mechanism is provided above the middle section of the connecting strip. The handle connection mechanism is detachably connected to a handle, and the angle between the handle and the coating device can be adjusted through a gear meshing structure.

[0011] Preferably, the handle connecting mechanism includes a cylindrical base fixed to a connecting bar, a first planar gear vertically fixed on the cylindrical base, a pin passing through the central axis of the first planar gear, one end of the pin being threaded to a nut, and the other end being rotatably connected to a cam handle; a second planar gear is fixed to the end of the handle, the second planar gear being rotatably sleeved on the pin and meshing with the first planar gear; rotating the cam handle can lock the meshing state of the first planar gear and the second planar gear by applying pressure, thereby achieving a fixed angle connection between the handle and the coating device.

[0012] Preferably, right-angle fixing pieces are symmetrically fixed on both sides of the connecting strip, and the cylindrical base is fastened between the two right-angle fixing pieces by horn bolts to achieve quick assembly and disassembly.

[0013] Preferably, the outer surface of the coating sponge is fitted with a replaceable coating sleeve, and the coating sleeve has hanging holes on both sides; hooks are correspondingly provided on both sides of the middle plate, and the coating sponge is wrapped and fixed after the hanging holes and hooks are fastened together.

[0014] Preferably, a quick-release interface is provided at the connection between the nozzle and the flexible hose, and the end of the flexible hose is equipped with a quick-release connector that matches the quick-release interface, so as to realize the quick separation of the nozzle and the hose.

[0015] Preferably, the adjustable flow water pump is integrated into a backpack mobile water tank, and the main pipe is symmetrically connected to the pump inlets at both ends of the splitter via a Y-shaped splitter.

[0016] Preferably, the inner wall of the receiving groove of the coating sponge is made of an elastic material, which forms an interference fit with the nozzle through radial friction, and the thickness of the coating sponge is adapted to the curvature of the photovoltaic panel surface.

[0017] Preferably, the intermediate plate is made of rigid engineering plastic, and the connecting strip is fixed to the intermediate plate by bolts, with the end of the bolt embedded in the cylindrical groove of the coating sponge to avoid interfering with the coating operation.

[0018] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0019] In this invention, the modular design of the main functional components, such as the intermediate plate, connecting strip, distributor, and coating sponge, enables rapid assembly and replacement, greatly improving assembly efficiency. If a module malfunctions, it can be quickly replaced.

[0020] In this invention, the nozzle and the coating sponge are interference-fitted, meaning the coating sponge is fixed to the underside of the intermediate plate through radial friction with the nozzle. This allows for quick and easy installation and removal, enabling rapid replacement of vulnerable parts and quick adaptation to coating needs in different scenarios (different types and sizes of coating sponges can be quickly replaced according to requirements such as photovoltaic panel size, material, and surface smoothness).

[0021] In this invention, the coating angle is adjusted by the cooperation of planar gear one, planar gear two, pin, and cam handle. Specifically, the pressure of the cam handle on planar gear one is released, so that planar gear one and planar gear two are no longer meshed. Then, the angle of this device relative to the handle is adjusted so that planar gear one and planar gear two rotate axially relative to each other. Finally, the cam handle is rotated to restore the meshing pressure between planar gear one and planar gear two. The operation is convenient, portable, and efficient. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the handle connection mechanism of this utility model;

[0025] Figure 3 This is a schematic diagram of the handle structure of this utility model.

[0026] Figure 4 This is a schematic diagram of the shunt structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the coated sponge structure of this utility model.

[0028] In the diagram: 1. Connecting strip; 2. Diverter; 3. Intermediate plate; 4. Regulating valve; 5. Coating sponge; 6. Nozzle; 7. Cam handle; 8. Pin; 9. Nut; 10. Claw bolt; 11. Receiving groove; 12. Planar gear one; 13. Planar gear two; 14. Right-angle fixing plate; 15. Columnar base; 16. Pump inlet; 17. Columnar groove; 18. Fixing bolt; 19. Handle. Detailed Implementation

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0030] Example 1: Basic Structure and Assembly Process

[0031] like Figures 1 to 5 As shown, this embodiment provides a handheld coating device for photovoltaic panels that is easy to assemble, including the following core components:

[0032] 1. Intermediate plate (3) and connecting strip (1)

[0033] The intermediate plate (3) is made of rigid engineering plastic and has multiple bolt holes on its surface. The connecting strip (1) is made of metal and is vertically fixed to the upper surface of the intermediate plate (3) by fixing bolts (18). The end of the bolt (18) extends to the bottom of the intermediate plate (3) and is embedded in the cylindrical groove (17) of the coating sponge (5) to avoid the bolt protruding and causing scratches on the surface of the photovoltaic panel during the coating process.

[0034] 2. Flow divider (2) and flow control module

[0035] The distributor (2) is fixed to one side of the connecting strip (1), and its main body has multiple pump outlets along the radial direction. Each pump outlet is equipped with an independent regulating valve (4). The regulating valve (4) is connected to the nozzle (6) through a flexible hose. The nozzle (6) is arranged in a linear array and passes through the intermediate plate (3). The nozzle (6) is fixed in the intermediate plate (6) with waterproof adhesive, and its lower end extends to the bottom of the intermediate plate (3). The nozzle (6) and the flexible hose are connected by a snap-fit ​​quick-release interface for easy replacement or maintenance.

[0036] 3. Coating sponge (5) and replaceable coating sleeve

[0037] The coating sponge (5) has a dense porous structure and is installed with the nozzle (6) by an interference fit through multiple receiving grooves (11) on its surface. The inner wall of the receiving groove (11) is made of elastic silicone material, and the nozzle (6) is fixed by radial friction. A rectangular coating sleeve is fitted on the outer surface of the coating sponge (5). The coating sleeve has hanging holes on both sides, and hooks are set on both sides of the middle plate (3). The coating sleeve can be quickly wrapped and fixed by fastening the hanging holes and hooks. The thickness of the coating sponge (5) is designed to be 5-10mm, which can adapt to the slight curvature of the photovoltaic panel surface.

[0038] 4. Handle connection mechanism and angle adjustment

[0039] The handle connection mechanism includes a cylindrical base (15) fixed on the connecting bar (1), on which a first planar gear (12) is vertically mounted. A pin (8) passes through the central shaft of the first planar gear (12), with one end fixed by a nut (9) and the other end connected to a cam handle (7). A second planar gear (13) is fixed to the end of the handle (19), and engages with the first planar gear (12) by slidingly sleeved on the pin (8).

[0040] Angle adjustment operation: Loosen the nut (9) and turn the cam handle (7) to release the pressure, manually adjust the angle between the handle (19) and the coating device (0°-90° adjustable), then tighten the nut and turn the cam handle to apply pressure and lock the gear engagement state.

[0041] 5. Pumping system and mobile water tank

[0042] The main body of the distributor (2) has eight pump outlets evenly distributed radially, with the outlet axis perpendicular to the middle plate, ensuring that the nozzles (6) are arranged in a linear array perpendicular to the photovoltaic panel surface. The pump inlets (16) at both ends of the distributor (2) are connected to the main pipe via Y-type distributors, and the other end of the main pipe is connected to an adjustable flow water pump. The water pump is integrated into a backpack-style portable water tank with a capacity of 20L, allowing for portable operation via a shoulder strap. The water pump flow rate can be adjusted via a knob, ranging from 50-500mL / min.

[0043] Example 2: Quick Disassembly and Maintenance

[0044] 1. Replacement of coating sponge

[0045] Pull the coating sponge (5) upwards gently to overcome the interference fit friction between the nozzle (6) and the receiving groove (11), and the old sponge can be removed. Align the receiving groove (11) of the new coating sponge (5) with the nozzle (6) and press it down until it is fully embedded, which takes about 5 seconds. The coating sponge (5) has a dense porous structure and is very lightweight. In actual measurements, the mass of various coating sponges (5) used in this invention is between 150-300g, and the interference fit friction between the receiving groove (11) and the nozzle (6) is designed to be between 5-8N (the material difference of the coating sponge leads to a difference in interference fit friction), which is sufficient to offset the influence of gravity. Therefore, the coating sponge (5) will not fall off on its own when suspended in the air. In the coating construction environment, the coating sponge (5) is pressed against the flat surface of the photovoltaic panel and will not be pulled. Therefore, the coating sponge (5) will not fall off under the influence of external force in the normal construction environment.

[0046] 2. Handle disassembly and angle reset

[0047] Unscrew the screws (10) and remove the cylindrical base (15) from between the right-angle fixing pieces (14) to replace or repair the handle. If the angle needs to be reset, follow the steps in Example 1.

[0048] 3. Separate the nozzle and hose

[0049] Press the quick-release connector clip to separate the nozzle (6) from the hose. Replace the clogged nozzle and reconnect it. No tools are required throughout the process.

[0050] 4. Adjustment of coating liquid distribution

[0051] During the pre-construction debugging process, if uneven application of the coating liquid occurs during the test, adjusting the corresponding regulating valve can balance the liquid output of each nozzle (the coating liquid used in this invention is a low-viscosity coating liquid with hydrophobic agents as the main component, which has little impact on the regulating valve and hose and will not cause blockage).

[0052] Example 3: Construction Operation Process

[0053] 1. Equipment assembly

[0054] Fix the distributor (2) and nozzle (6) to the connecting strip (1) with bolts, install the coating sponge (5) and fasten the coating sleeve, connect the handle (19) and adjust it to the required angle.

[0055] 2. Coating liquid supply

[0056] Carrying a mobile water tank, start the water pump and adjust the flow rate. The coating liquid is distributed to each nozzle (6) through the distributor (2) and evenly penetrates into the coating sponge (5).

[0057] 3. Coating application

[0058] The handheld device is used to attach the coating sponge (5) to the surface of the photovoltaic panel and move it in a straight line at a uniform speed. The coating liquid is dispersed into micron-sized droplets through the sponge and uniformly coated on the surface of the photovoltaic panel through the coating sleeve.

[0059] Technical effect verification

[0060] Testing showed that this device has an assembly time of ≤2 minutes, an angle adjustment time of ≤10 seconds, and a coating efficiency improvement of over 40%. The coating sleeve thickness deviation is <5μm, making it suitable for various photovoltaic panels, including monocrystalline / polycrystalline silicon and thin-film photovoltaic panels.

[0061] Precautions

[0062] Regularly check the wear and deformation of the intermediate plate and replace it if necessary;

[0063] A coating uniformity test must be performed before coating operations;

[0064] Hose 8 is recommended to be replaced every 6 months;

[0065] It is recommended to replace the coating sleeve every 150 square meters of work.

[0066] It is recommended to replace the coating sponge every 400 square meters.

[0067] It should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A handheld coating device for photovoltaic panels that is easy to assemble, comprising an intermediate plate (3), characterized in that: A connecting strip (1) is fixed on the intermediate plate (3). A flow divider (2) is installed on one side of the connecting strip (1). The flow divider (2) has multiple pump outlets in the radial direction. Each pump outlet is equipped with an independent regulating valve (4). The regulating valve (4) is connected to the nozzle (6) through a flexible hose. Multiple nozzles (6) are arranged in a linear array and pass through the intermediate plate (3), with their lower ends extending to the bottom of the intermediate plate (3). A coating sponge (5) is detachably installed below the intermediate plate (3). The lower end of the nozzle (6) is embedded in the receiving groove (11) of the coating sponge (5) and fixed by interference fit. Pump inlets (16) are provided at both ends of the flow divider (2). The pump inlets (16) are connected to an adjustable flow water pump through a main pipe. A handle connection mechanism is provided above the middle section of the connecting strip (1). The handle connection mechanism is detachably connected to a handle (19), and the angle between the handle (19) and the coating device can be adjusted through a gear meshing structure.

2. The coating apparatus as described in claim 1, characterized in that: The handle connecting mechanism includes a cylindrical base (15) fixed on the connecting bar (1), a first planar gear (12) is vertically fixed on the cylindrical base (15), a pin (8) passes through the central axis of the first planar gear (12), one end of the pin (8) is connected to a nut (9) by a thread, and the other end is rotatably connected to a cam handle (7); a second planar gear (13) is fixed to the end of the handle (19), the second planar gear (13) is rotatably sleeved on the pin (8) and meshes with the first planar gear (12); Rotating the cam handle (7) can lock the meshing state of the first planar gear (12) and the second planar gear (13) by applying pressure, thereby achieving a fixed angle connection between the handle (19) and the coating device.

3. The coating apparatus as described in claim 2, characterized in that: Right-angle fixing pieces (14) are symmetrically fixed on both sides of the connecting strip (1), and the cylindrical base (15) is fastened between the two right-angle fixing pieces (14) by horn bolts (10) to achieve quick assembly and disassembly.

4. The coating apparatus as described in claim 1, characterized in that: The outer surface of the coating sponge (5) is fitted with a replaceable coating sleeve, and the coating sleeve has hanging holes on both sides; the middle plate (3) has hooks on both sides, and the coating sponge (5) is wrapped and fixed after the hanging holes and hooks are fastened together.

5. The coating apparatus as described in claim 1, characterized in that: The nozzle (6) is provided with a quick-release interface at the connection between it and the flexible hose. The end of the flexible hose is provided with a quick-release connector that matches the quick-release interface, so as to realize the quick separation of the nozzle (6) and the hose.

6. The coating apparatus as described in claim 1, characterized in that: The adjustable flow water pump is integrated into a backpack mobile water tank, and the main pipe is symmetrically connected to the pump inlets (16) at both ends of the two pump inlets via a Y-type splitter.

7. The coating apparatus as claimed in claim 1, characterized in that: The inner wall of the receiving groove (11) of the coated sponge (5) is made of elastic material, which forms an interference fit with the nozzle (6) through radial friction, and the thickness of the coated sponge (5) is adapted to the curvature of the photovoltaic panel surface.

8. The coating apparatus as claimed in claim 1, characterized in that: The intermediate plate (3) is made of rigid engineering plastic. The connecting strip (1) is fixed to the intermediate plate (3) by bolts (18), and the end of the bolt (18) is embedded in the cylindrical groove (17) of the coating sponge (5) to avoid interfering with the coating operation.

9. The coating apparatus as claimed in claim 1, characterized in that: The nozzle is fixed to the intermediate plate (3) with waterproof glue.

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