Automatic pneumatic lacquering equipment for wind power blade and lacquering method of automatic pneumatic lacquering equipment

Abstract

The invention relates to the technical field of wind power blade processing, in particular to wind power blade automatic pneumatic painting equipment which comprises a main box body and a paint container located at the upper end of the main box body, a pneumatic diaphragm pump is arranged in the main box body, and a feeding port of the pneumatic diaphragm pump is connected with the paint container; the outer end of the main box body is provided with an air inlet and a paint outlet which are communicated with the pneumatic diaphragm pump, the air inlet is connected with a barometer, the paint outlet is connected with a paint outlet assembly located on the outer side of the main box body, the paint outlet end of the paint outlet assembly is provided with a paint brush roller, the paint outlet assembly comprises a rubber pipe, the rubber pipe is sleeved with a telescopic rod, and the rubber pipe is connected with a porous connecting pipe. And the paint brush roller is connected to the porous connecting pipe. According to the roller coating device, the paint dripping phenomenon caused by manual roller coating is avoided, the climbing frequency of personnel can be reduced, and one-time roller coating of the blade from the highest point to the lowest point is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine blade processing, and specifically provides an automated pneumatic painting device for wind turbine blades and a painting method thereof. Background Art

[0002] As a pollution-free, renewable green energy source, wind energy has huge development potential. It is particularly important as a reliable way to solve production and living energy problems in coastal islands, remote mountainous areas, grasslands and pastures, as well as rural and border areas that are far away from the power grid or difficult for the power grid to reach in the short term. Wind energy has the advantages of low energy consumption, environmental protection and large reserves.

[0003] Wind energy is usually used to convert wind energy into electrical energy through wind turbines, so as to generate electricity through wind power. Wind turbine blades are one of the core components of wind turbines. Wind power generation needs to be achieved through wind turbine blades. When wind turbine blades are made, they need to be painted. With the rapid development of the wind turbine blade industry, the length of wind turbine blades is getting longer and longer. In the past, the traditional method of painting with manual paint rollers had the following problems: 1. During the operation, the paint is often dipped in with a handheld telescopic rod. The paint is easily dripped when the rod is lifted. In addition to generating hazardous waste, there is also the risk of a large amount of paint solidifying and accumulating at the painting station, which will have a serious adverse effect on the painting station; 2. As the blade size gradually increases, the height of the highest point of the blade also increases. During the operation, workers often need to use a climbing vehicle to complete the paint roller coating at the highest point, which is difficult to operate; 3. The existing wind turbine blade paint roller coating method is to put the prepared paint into a paint bucket, distribute each paint bucket to the roller coating personnel, and after the roller coating personnel have rolled for 3-5m, they will replace the paint bucket to the next position and start the next section of blade coating. During the operation, the staff needs to walk back and forth to continuously place the paint bucket forward as the operation progresses. The operation is highly complicated, the labor intensity is high, and the work efficiency is low.

[0004] In order to solve the above problems, an automatic painting device is urgently needed. In the prior art, the following patents are related to automatic painting devices: 1. The utility model patent with the patent number of "202121353302.9" and the patent name of "A portable automatic paint roller" includes a roller brush, a paint bucket, a bucket cover, a paint hose, an extension assembly, a bracket, etc. The automatic paint roller is convenient for adjusting the height of the roller brush by setting an extension assembly, which is convenient for painting walls of different heights, and can paint automatically. In addition, a paint receiving box is provided to hold dripping paint, which can improve safety and avoid waste of paint.

[0005] 2. The utility model patent with the patent number "202021522731.X" and the patent name "A handheld roller brush for automatic painting" includes a handheld rod, a first screw hole, a paint box, an adjusting rod, a booster pump, a support frame, a roller, a discharge plate, a second connecting pipe, etc. This solution can automatically paint when painting the wall, saving the time of dipping paint back and forth, saving paint materials, and the length of the roller brush can be adjusted by the adjusting rod, which is suitable for painting walls of different heights.

[0006] The above-mentioned existing technology can realize automatic painting, but the structure is complex, there is a certain degree of operating difficulty, and the work efficiency is limited. Therefore, how to develop an automatic painting equipment for wind turbine blades with simple structure, convenient operation and high work efficiency to realize automatic pumping of paint and further reduce pollution is a problem that needs to be solved urgently. Summary of the invention

[0007] In order to solve the above problems, the present invention provides an automatic pneumatic painting equipment and a painting method for wind turbine blades, which has a simple structure and is easy to operate. It can avoid the problems of low efficiency and paint dripping caused by manual roller coating, and can realize automatic pumping of paint to reduce pollution.

[0008] The present invention provides an automated pneumatic painting device for wind turbine blades, which specifically includes a main box body and a paint container located at the upper end of the main box body, wherein a pneumatic diaphragm pump is provided inside the main box body and the feed port of the pneumatic diaphragm pump is connected to the paint container; an air inlet and a paint outlet respectively connected to the pneumatic diaphragm pump are provided at the outer end of the main box body, the air inlet is connected to a barometer, the paint outlet is connected to a paint outlet assembly located outside the main box body, and a paint roller is provided at the paint outlet end of the paint outlet assembly.

[0009] Furthermore, the paint outlet assembly includes a hose connected to the paint outlet, a telescopic rod is sleeved on the hose, a paint outlet end of the hose away from the paint outlet is connected to a porous connecting pipe, and a paint roller is connected to the porous connecting pipe.

[0010] Furthermore, the end of the air inlet is connected to the pneumatic diaphragm pump, the front end of the air inlet is connected to the end of the barometer, and a temporary switch valve is provided on one side of the hose close to the paint outlet.

[0011] Further, the front end of the barometer is connected to the external air supply port.

[0012] Furthermore, the bottom of the paint container includes a circumferential cone wall section and a middle horizontal section located in the middle of the circumferential cone wall section. A discharge pipe is provided on the middle horizontal section, and a feed port of the pneumatic diaphragm pump is connected to the discharge pipe.

[0013] Furthermore, the axial conical wall section is a reduced diameter inclined wall structure with an inner diameter gradually decreasing from top to bottom.

[0014] Furthermore, a flow regulating valve for regulating the paint flow rate in the pneumatic diaphragm pump is provided on the paint container.

[0015] A painting method of a wind turbine blade automatic pneumatic painting device, using the above-mentioned painting device to perform a painting operation, comprises the following steps: S1: Open the flow regulating valve and temporary switch valve, introduce clean water into the paint container, connect the porous connecting pipe to the sewage bucket, and wait until no water is pumped out of the porous connecting pipe after the equipment is cleaned; S2: Pour paint into the paint container and place the porous connecting tube in the paint container to allow the paint to circulate; S3: After the paint circulates for the required time, drain the accumulated water and close the flow regulating valve and temporary switch valve; S4: After the porous connecting tube stops discharging paint, connect the paint roller to the porous connecting tube; S5: Open the flow regulating valve and temporary switch valve, pump the paint out to the porous connecting pipe and penetrate onto the paint roller, and start the paint roller coating operation.

[0016] Furthermore, in step S5, during the paint roller coating operation, when it is necessary to replace parts midway or to pause the paint roller coating, the temporary switch valve is closed, and after the paint is no longer pumped out, the parts are replaced or the matters of suspending the paint roller coating are processed. After the processing is completed, the temporary switch valve is opened to continue the operation.

[0017] Furthermore, in step S5, when the painting operation is completed, first remove the paint roller, then pour clean water into the paint container for cleaning, and connect the porous connecting pipe to a sewage bucket. When no obvious paint is pumped out of the porous connecting pipe, end the cleaning, close the flow regulating valve and the temporary switch valve, disassemble the components for reuse, and at the same time recycle the hazardous waste to the designated treatment point for treatment.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects: The similarity between the present invention and the patent is that both use a retractable rod and a pump to achieve roller coating of paint at different heights. The difference is that the present invention has a separate paint container that can accommodate a large amount of paint, reduce the number of paint refills, and improve efficiency.

[0019] First, the patent of the present invention is similar to it in that both use an adjustable component to adjust the height of the roller brush. The difference is that the present invention uses a common paint telescopic rod on the market, through which the paint hose passes, and the end of the paint hose of the present invention is connected to a porous connecting pipe (steel pipe), and then the porous connecting pipe is connected to the paint roller to achieve paint seepage. The second point is that the paint container of the present invention is only used for storage, and does not need to be sealed. Paint can be added at any time during the process, and the paint container is connected to the pneumatic pump through a paint pipe to ensure that the paint with high viscosity can be pumped out to the specified height smoothly, so as to realize the automatic pumping of the paint, replacing the original manual trial of using a paint roller to directly take paint from the paint bucket, effectively reducing paint waste and pollution caused by paint dripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of a painting device provided according to an embodiment of the present invention; Figure 2 Schematic diagram of the structure of a paint container provided according to an embodiment of the present invention.

[0021] The reference numerals therein include: paint container 1, pneumatic diaphragm pump 2, air inlet 3, paint outlet 4, barometer 5, flow regulating valve 6, temporary switch valve 7, telescopic rod 8, porous connecting pipe 9, paint roller 10, main box body 11, hose 12, circumferential cone wall section 13, middle horizontal section 14, and discharge pipe 15. DETAILED DESCRIPTION

[0022] In the following, reference will be made to the Figure 1 , 2 Embodiments of the present invention are described. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the following Figure 1 , 2 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0024] An automated pneumatic painting device for wind turbine blades comprises a main housing 11 and a paint container 1 located at the upper end of the main housing 11, the paint container 1 being used to hold paint or clean water, the bottom of the paint container 1 comprising a circumferential cone wall section 13 and a middle horizontal section 14 located in the middle of the circumferential cone wall section 13, a discharge pipe 15 being provided on the middle horizontal section 14, and the axial cone wall section being a reduced diameter inclined wall structure with an inner diameter gradually decreasing from top to bottom, so as to facilitate the paint and clean water to converge downward and flow into the discharge pipe 15.

[0025] The main box 11 is provided with a pneumatic diaphragm pump 2, and the feed port of the pneumatic diaphragm pump 2 is connected to the paint container 1, and specifically, the feed port of the pneumatic diaphragm pump 2 is connected to the discharge pipe 15. The outer end of the main box 11 is provided with an air inlet 3 and a paint outlet 4 respectively connected to the pneumatic diaphragm pump 2, and the air inlet 3 is connected to a barometer 5, the end of the air inlet 3 is connected to the pneumatic diaphragm pump 2, the front end of the air inlet 3 is connected to the end of the barometer 5, and the front end of the barometer 5 is connected to the external air supply port.

[0026] The paint outlet 4 is connected to a paint outlet assembly located outside the main box 11, and a paint roller 10 is provided at the paint outlet end of the paint outlet assembly. The paint outlet assembly includes a hose 12 connected to the paint outlet 4, and a temporary switch valve 7 is provided on the side of the hose 12 close to the paint outlet 4. A telescopic rod 8 is sleeved on the hose 12, and a porous connecting pipe 9 is connected to the paint outlet end of the hose 12 away from the paint outlet 4, and the paint roller 10 is connected to the porous connecting pipe 9. The paint container 1 is also provided with a flow regulating valve 6 for regulating the paint outlet flow in the pneumatic diaphragm pump 2. The pneumatic assembly is used to realize automatic paint feeding in the paint room, reduce the phenomenon of paint dripping during manual roller coating, and make the paint amount of the wind turbine blade paint roller coating quantitatively controlled, improve the paint roller coating effect, improve the work efficiency of employees, avoid the use of electrical equipment in the paint room, and prevent safety hazards.

[0027] A painting method of a wind turbine blade automatic pneumatic painting device, using the above-mentioned painting device to perform a painting operation, comprises the following steps: S1: Connect all components in place, connect the air inlet 3 to the external air supply port, open the flow regulating valve 6 and the temporary switch valve 7, introduce clean water into the paint container 1, connect the porous connecting pipe 9 to the sewage bucket, and wait until no water is pumped out of the porous connecting pipe 9 after the equipment is cleaned; S2: Pour paint into the paint container 1, and place the porous connecting tube 9 in the paint container 1 to allow the paint to circulate; S3: After the paint circulates for a certain period of time, the accumulated water is removed and the flow regulating valve 6 and the temporary switch valve 7 are closed; S4: After the porous connecting tube 9 stops discharging paint, the paint roller 10 is connected to the porous connecting tube 9; S5: Open the flow regulating valve 6 and the temporary switch valve 7, the paint is pumped out to the porous connecting pipe 9 and penetrates onto the paint roller 10, and the paint roller coating operation begins.

[0028] When the painting operation is completed, first remove the paint roller 10, then pour clean water into the paint container 1 for cleaning, and connect the porous connecting pipe 9 to the sewage bucket. When there is no obvious paint pumping out from the porous connecting pipe 9, the cleaning is completed, the flow regulating valve 6 and the temporary switch valve 7 are closed, and the components are disassembled for reuse. At the same time, the hazardous waste is recycled to the designated treatment point for treatment.

[0029] During the paint roller coating operation, when it is necessary to replace parts or suspend the paint roller coating, close the temporary switch valve 7, wait until the paint is no longer pumped out, replace the parts or handle the suspension of the paint roller coating, and after the handling is completed, open the temporary switch valve 7 to continue the operation.

[0030] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0031] The above specific implementations of the present invention do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An automatic pneumatic painting device for wind turbine blades, characterized in that: The invention comprises a main box (11) and a paint container (1) located at the upper end of the main box (11); a pneumatic diaphragm pump (2) is arranged in the main box (11), and a feed port of the pneumatic diaphragm pump (2) is connected to the paint container (1); an air inlet (3) and a paint outlet (4) which are respectively connected to the pneumatic diaphragm pump (2) are arranged at the outer end of the main box (11); the air inlet (3) is connected to a barometer (5); the paint outlet (4) is connected to a paint outlet assembly located outside the main box (11); and a paint roller (10) is arranged at the paint outlet end of the paint outlet assembly.

2. The automatic pneumatic painting equipment for wind turbine blades according to claim 1 is characterized in that: The paint outlet assembly comprises a rubber hose (12) connected to the paint outlet (4), a telescopic rod (8) is sleeved on the rubber hose (12), a paint outlet end of the rubber hose (12) away from the paint outlet (4) is connected to a porous connecting pipe (9), and a paint roller (10) is connected to the porous connecting pipe (9).

3. The automatic pneumatic painting equipment for wind turbine blades according to claim 2 is characterized in that: The end of the air inlet (3) is connected to the pneumatic diaphragm pump (2), the front end of the air inlet (3) is connected to the end of the barometer (5), and a temporary switch valve (7) is provided on one side of the rubber hose (12) close to the paint outlet (4).

4. The automatic pneumatic painting equipment for wind turbine blades according to claim 3 is characterized in that: The front end of the air pressure gauge (5) is connected to the external air supply port.

5. The automatic pneumatic painting equipment for wind turbine blades according to claim 4 is characterized in that: The bottom of the paint container (1) comprises a circumferential cone wall section (13) and a middle horizontal section (14) located in the middle of the circumferential cone wall section (13). A discharge pipe (15) is provided on the middle horizontal section (14), and a feed port of the pneumatic diaphragm pump (2) is connected to the discharge pipe (15).

6. The automatic pneumatic painting equipment for wind turbine blades according to claim 5 is characterized in that: The axial cone wall section is a reduced diameter inclined wall structure with an inner diameter gradually decreasing from top to bottom.

7. The automatic pneumatic painting equipment for wind turbine blades according to claim 6 is characterized in that: The paint container (1) is provided with a flow regulating valve (6) for regulating the flow rate of paint discharged from the pneumatic diaphragm pump (2).

8. A painting method for wind turbine blades using an automated pneumatic painting device, using the painting device of claim 7 for painting, characterized in that: The steps include: S1: Open the flow regulating valve (6) and the temporary switch valve (7), introduce clean water into the paint container (1), connect the porous connecting pipe (9) to the sewage bucket, and wait until no water is pumped out of the porous connecting pipe (9) after the equipment is cleaned; S2: Pour paint into the paint container (1), and place the porous connecting tube (9) in the paint container (1) to allow the paint to circulate; S3: After the paint circulates for a certain period of time, the accumulated water is removed and the flow regulating valve (6) and the temporary switch valve (7) are closed; S4: After the porous connecting tube (9) no longer discharges paint, the paint roller (10) is connected to the porous connecting tube (9); S5: Open the flow regulating valve (6) and the temporary switch valve (7), the paint is pumped out to the porous connecting pipe (9) and penetrates onto the paint roller (10), and the paint roller coating operation begins.

9. The automatic pneumatic painting equipment for wind turbine blades according to claim 8, characterized in that: In step S5, during the paint roller coating operation, when it is necessary to replace parts or suspend the paint roller coating, the temporary switch valve (7) is closed, and after the paint is no longer pumped out, the parts are replaced or the matters of suspending the paint roller coating are processed. After the processing is completed, the temporary switch valve (7) is opened to continue the operation.

10. The automatic pneumatic painting equipment for wind turbine blades according to claim 9, characterized in that: In step S5, when the painting operation is completed, the paint roller (10) is first removed, and then clean water is poured into the paint container (1) for cleaning. The porous connecting pipe (9) is connected to a sewage bucket. When no obvious paint is pumped out of the porous connecting pipe (9), the cleaning is completed, the flow regulating valve (6) and the temporary switch valve (7) are closed, and the various components are disassembled for reuse. At the same time, the hazardous waste is recycled to a designated treatment point for treatment.

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