A paint spraying device for tower tube anticorrosion with paint spraying amount easy to control

Abstract

The utility model relates to tower drum anticorrosive technical field discloses a kind of paint spraying devices for tower drum anticorrosion with paint spraying amount is easy to control, including spraying material pipe, material pipe is communicated with spraying material pipe, and filter mechanism is arranged on the spraying material pipe, and atomizing nozzle is arranged on the filter mechanism;The filter mechanism includes filter cartridge, filter cover is arranged in the filter cartridge, adjusting sleeve is rotatably arranged on the filter cartridge, cleaning brush is arranged on the filter cover inner wall, and the cleaning brush is connected with the adjusting sleeve inner wall;Discharge groove is opened on the filter cover along its extension direction, and the bristle of the cleaning brush is located in the discharge groove in initial state, and its brush plate is located at the discharge groove and is sealed;The utility model can filter paint, improve the stability and reliability of paint spraying process;Periodically, the filter mechanism can also be cleaned, to ensure filtering efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tower corrosion protection technology, and in particular to a painting device for tower corrosion protection that facilitates control of the amount of paint sprayed. Background Technology

[0002] In the field of tower manufacturing, wind turbine towers, as key supporting components for wind power generation, require crucial anti-corrosion painting treatment on their outer layer. Currently, tower painting technology has made significant progress. For example, Chinese Patent CN201720459906.9 describes an automatic painting device for the inner wall of wind turbine towers, capable of automatically painting the inner wall of large-diameter cylinders. By controlling the speed of the nozzle's circumferential rotation and forward movement, the amount and thickness of paint can be easily adjusted, resulting in a uniform paint layer. This technology improves painting efficiency and quality to a certain extent, effectively reducing paint waste. However, after long-term practical application, this technology has revealed some problems that cannot be ignored. Although the paint volume can be automatically and conveniently controlled, when the pneumatic atomizing nozzle becomes clogged, it is difficult to guarantee the consistency and stability of the paint volume, paint thickness, and paint effect for the same tower. If the pneumatic atomizing nozzle becomes clogged multiple times during the processing of the same tower, it is undoubtedly a huge challenge for operations that pursue controllable painting.

[0003] Based on this utility model patent with publication number CN220658057U, a painting device for tower corrosion protection that facilitates control of paint spraying volume is disclosed. This device, featuring a filtration mechanism, reduces the frequency of tower blockage. The device includes a movable base with a motor connected to a control box mounted on it. The motor is driven by a reducer, which in turn is driven by a central shaft. This utility model, by installing a filtration mechanism between the atomizing nozzle and the spray tube, allows the material from the spray tube to be forced into the filter cylinder under pressure. The material passes through a third, second, and first filtration layer. This filtration system minimizes the impact on paint delivery pressure and filters impurities before spraying, significantly reducing the frequency of atomizing nozzle blockage and enabling better control of the paint spraying volume in corrosion protection painting.

[0004] The aforementioned patents have solved the problem of atomizing nozzle clogging to some extent, but in practical applications, the following problems exist. First, the multi-layered structure of the filter layer is relatively complex, and there is a large overlap between adjacent filter layers, which increases the resistance during paint spraying. Second, the dirt on the filter layer is not easy to clean and remove online. Although there is a scraper on the filter cylinder, it can only be used after the machine is stopped and disassembled. When used online, the dirt scraped off from the upper filter layer is easy to fall onto the lower filter layer, and the scraped dirt is easy to fall to the bottom of the filter cylinder and block the spray pipe, causing the spray pipe to be obstructed.

[0005] Therefore, there is an urgent need for a painting device that can both filter paint and clean the filtration mechanism online to ensure continuous operation, and is easy to control the amount of paint sprayed for tower corrosion protection. Utility Model Content

[0006] The purpose of this invention is to provide a painting device for tower corrosion protection that facilitates control of paint application. This device can filter the paint to prevent impurities in the paint from clogging the atomizing nozzles, thus avoiding differences in paint thickness and effect, thereby improving the stability and reliability of the painting process. It can also regularly clean the filtration mechanism to ensure filtration efficiency.

[0007] The present invention adopts the following technical solution: A painting device for tower corrosion protection with easily controllable paint application includes a movable base. A motor connected to a control box is mounted on the movable base. The motor is connected to a central shaft via a reducer. A feed pipe and a conveying pipe are connected to opposite ends of the central shaft. A spray pipe is connected to the extended end of the central shaft, and the conveying pipe communicates with the spray pipe. A filter mechanism with atomizing nozzles is provided on the spray pipe. The filter mechanism includes a filter cylinder containing a filter cover extending towards the atomizing nozzles. An adjusting sleeve is rotatably mounted on the filter cylinder. A cleaning brush is provided on the inner wall of the filter cover, and the cleaning brush is connected to the inner wall of the adjusting sleeve. A drain trough is formed on the filter cover along its extension direction. Initially, the bristles of the cleaning brush are located within the drain trough, and the brush plate is positioned at the drain trough to block it.

[0008] Preferably, the filter cover is conical, with a sealing ring at its bottom, and the sealing ring is fixedly connected to the inner wall of the filter cylinder.

[0009] Preferably, the filter cover includes a sealing section at the bottom, on which a mesh filter section is provided.

[0010] Preferably, a storage cavity is formed between the outer wall of the sealing section and the inner wall of the filter cartridge.

[0011] Preferably, the filter cartridge is provided with a cleaning port, and a sealing plate is detachably provided at the cleaning port.

[0012] Preferably, the adjusting sleeve is provided with a positioning element, and the filter cylinder is provided with a positioning hole.

[0013] Preferably, the positioning element includes a positioning rod, on which a positioning block is elastically disposed; in the initial state, the positioning block is located inside the positioning hole.

[0014] Preferably, the bottom of the positioning block is provided with a ball bearing.

[0015] Preferably, the outer side of the adjusting sleeve is provided with anti-slip stripes.

[0016] Preferably, the cross-section of the drain trough along the radial direction of the filter cylinder is an isosceles trapezoid, and the end with the smaller side length is located close to the inner wall of the filter cylinder.

[0017] Compared with existing technologies, the advantages of this invention are as follows: This invention uses a filtration mechanism composed of a filter cylinder and a filter cover to effectively intercept impurities in the paint, eliminating the need for a multi-layer filter structure and simplifying the overall structure of the filtration mechanism. The design of the filter cover extending towards the atomizing nozzle ensures the filtration area while reducing the contact resistance between the filter components and the paint, avoiding the increased spraying resistance caused by overlapping multiple filter layers. This ensures that the paint can be smoothly delivered to the atomizing nozzle under a certain pressure, meeting the pneumatic pressure requirements of the nozzle while efficiently filtering impurities and significantly reducing the frequency of atomizing nozzle clogging.

[0018] The cleaning brush installed on the inner wall of the filter cover is connected to the adjusting sleeve on the filter cylinder. When it is necessary to clean the dirt on the filter cover, simply rotate the adjusting sleeve to move the cleaning brush along the inner wall of the filter cover and sweep off the attached dirt. At the same time, the drain groove opened along the extension direction on the filter cover can discharge the swept-off dirt in time during the cleaning process, preventing dirt accumulation. In the initial state, the brush plate of the cleaning brush blocks the drain groove to ensure that paint does not leak from the drain groove during normal painting. During cleaning, as the cleaning brush moves, the dirt can be smoothly discharged through the drain groove without stopping the machine to disassemble the filter mechanism. This solves the problem in the prior art that the filter layer dirt needs to be cleaned by stopping the machine, and that dirt can easily contaminate the lower filter layer or block the spray pipe during cleaning. This ensures continuous painting operation and improves work efficiency. Attached Figure Description

[0019] Figure 1 This is a front view of an embodiment of this application; Figure 2 This is a cross-sectional view of the filter cartridge according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the filter cover according to an embodiment of this application; Figure 4 for Figure 2 A magnified view of A in the middle. Detailed Implementation

[0020] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments: like Figures 1 to 4As shown, the present invention discloses a painting device for tower corrosion protection that facilitates control of paint application. The device includes a movable base 1, on which a motor 3 connected to a control box 2 is mounted. The motor 3 is connected to a central shaft cylinder 5 via a reducer 4. The two ends of the central shaft cylinder 5 are connected to a feed pipe 6 and a conveying pipe 7, respectively. An extension end of the central shaft cylinder 5 is connected to a spray pipe 8, which communicates with the spray pipe 8. A filter mechanism is provided on the spray pipe 8, and an atomizing nozzle 9 is provided on the filter mechanism. The filter mechanism is detachably located between the spray pipe 8 and the atomizing nozzle 9 for disassembly and maintenance. This application only optimizes and improves the filter mechanism; all other features are existing technologies. For details, please refer to the content disclosed in the utility model patent with publication number CN220658057U.

[0021] In this embodiment, the filtration mechanism includes a filter cylinder 10, with both ends of the filter cylinder 10 detachably connected to the atomizing nozzle 9 and the spray pipe 8, preferably by threaded connection. A filter cover 11 is provided inside the filter cylinder 10, extending towards the atomizing nozzle 9 to effectively increase the filtration area and reduce the resistance of the paint. An adjusting sleeve 12 is rotatably mounted on the filter cylinder 10, with both ends of the adjusting sleeve 12 rotatably connected to the filter cylinder 10 via bearings. Anti-slip stripes are provided on the outer side of the adjusting sleeve 12 to prevent slippage during rotation adjustment. A cleaning brush 13 is provided on the inner wall of the filter cover 11, connected to the inner wall of the adjusting sleeve 12. As the adjusting sleeve 12 rotates, it drives the cleaning brush 13 to clean the inner wall of the filter cover 11, ensuring the filter cover 11 is unobstructed and thus ensuring filtration efficiency. A drain groove 14 is provided on the filter cover 11 along its extension direction. In the initial state, the bristles of the cleaning brush 13 are located in the drain groove 14, and its brush plate is located at the drain groove 14 to block it. During cleaning, simply adjust the spray pipe 8 to a horizontal position, then rotate the adjusting sleeve 12 to move the cleaning brush bristles, thus completing the cleaning operation on the inner wall of the filter cover 11. The horizontal placement of the spray pipe helps to discharge the swept-off dirt from the drain trough 14, allowing the dirt to enter the cavity between the filter cover 11 and the filter cylinder 10, preventing it from falling below the filter cylinder 10 and clogging the spray pipe 8. It also prevents the paint from carrying dirt and being sprayed out again as the spray pipe 8 sprays, ensuring filtration efficiency. In addition, in this embodiment, the drain trough 14 has an isosceles trapezoidal cross section along the radial direction of the filter cylinder 10, with the end with the smaller side length located close to the inner wall of the filter cylinder 10. This arrangement creates inclined surfaces on both sides of the drain trough 14, reducing the resistance of the cleaning brush bristles 13 moving in and out of the drain trough 14 during rotation.

[0022] Furthermore, in this embodiment, the filter cover 11 is preferably cone-shaped, and a sealing ring 15 is provided at the bottom of the filter cover 11. The diameter of the sealing ring 15 is larger than the diameter of the bottom of the filter cover 11, and the sealing ring 15 is fixedly connected to the inner wall of the filter cylinder 10. Since the top tip of the filter cover 11 is set towards the atomizing nozzle 9, a cavity structure is formed between the filter cover 11 and the filter cylinder 10 above the sealing ring 15. This helps the paint to be sprayed evenly along the periphery of the filter cover 11, and also helps to temporarily store the dirt cleaned from the inner wall of the filter cover 11. In this embodiment, the cone-shaped structure gradually narrows from the inlet end to the outlet end (near the atomizing nozzle 9). This design conforms to the flow characteristics of the paint, can guide the paint to converge smoothly towards the atomizing nozzle 9, reduce the flow resistance of the paint in the filter cover 11, avoid pressure loss due to local turbulence, and ensure that the paint is delivered to the atomizing nozzle 9 at a stable pressure, meeting the pressure requirements of pneumatic atomization. Furthermore, the conical filter cover 11 has a larger unfolded filtration area, allowing for more thorough contact with the paint compared to other shapes. This enables more comprehensive interception of impurities in the paint, further reducing the possibility of impurities entering the atomizing nozzle 9 and causing blockage. Simultaneously, the tapered angle of the cone creates a guiding effect as the paint flows through the filter cover 11, ensuring more uniform contact between the paint and the surface of the filter cover 11, preventing localized impurity accumulation, and guaranteeing the stability of the filtration effect.

[0023] Furthermore, in this embodiment, the filter cover 11 includes a bottom sealing section 11-1, on which a mesh filter section 11-2 is provided. This optimized arrangement is to form a storage cavity for temporarily storing dirt between the filter cylinder 10, the filter cover 11, and the sealing ring 15. When the spray pipe is in a vertical position, the dirt is blocked by the sealing section 11-1, and the paint will be sprayed out from the upper filter section 11-2, avoiding the situation where the filtered paint is sprayed out carrying dirt, thus ensuring the filtration effect. In addition, the filter cylinder 10 is provided with a cleaning port, and a sealing plate 16 is detachably provided at the cleaning port by bolts. The cross-section of the cleaning port and the sealing plate 16 is preferably set as a T-shaped structure to ensure the tightness of the connection between the two.

[0024] Furthermore, in this embodiment, the adjusting sleeve 12 is provided with a positioning element, and the filter cylinder 10 is provided with a positioning hole 17. By placing the positioning element in the positioning hole 17, the adjusting sleeve 12 can be positioned, preventing the adjusting sleeve 12 from rotating under external force or due to careless operation during operation, which would cause the cleaning brush 13 to move out of the drain hole. Specifically, the positioning element includes a positioning rod 18, which has a receiving hole 19. A positioning block 21 is elastically disposed in the receiving hole 19 by a spring 20. In the initial state, the positioning block 21 is located in the positioning hole 17. When it is necessary to clean the inner wall of the filter cover 11, the adjusting sleeve 12 is rotated, and the positioning block 21 will move out of the positioning hole 17. As the adjusting sleeve 12 rotates, the cleaning of the inner wall of the filter cover 11 is completed. Preferably, a ball bearing 22 is movably provided at the bottom of the positioning block 21. In the initial state, the ball bearing 22 is located in the positioning hole 17. The setting of the ball bearing 22 helps to reduce the friction between the positioning block 21 and the filter cylinder 10 when the adjusting sleeve 12 moves, and improves the convenience of the adjusting sleeve 12 rotation.

Claims

1. A painting device for tower corrosion protection that facilitates control of paint application, comprising a movable base, a motor connected to a control box mounted on the movable base, the motor being connected to a central shaft via a reducer, a feed pipe and a conveying pipe connected to both ends of the central shaft, a spray pipe connected to the extended end of the central shaft, the conveying pipe communicating with the spray pipe, a filter mechanism provided on the spray pipe, and an atomizing nozzle provided on the filter mechanism; characterized in that: The filtration mechanism includes a filter cylinder, a filter cover inside the filter cylinder, the filter cover extending toward the atomizing nozzle, an adjusting sleeve rotatably mounted on the filter cylinder, a cleaning brush on the inner wall of the filter cover, and the cleaning brush connected to the inner wall of the adjusting sleeve; a drain groove is formed on the filter cover along its extending direction, and in the initial state, the bristles of the cleaning brush are located in the drain groove, and its brush plate is located at the drain groove to block it.

2. The painting device for tower corrosion protection that facilitates control of paint application according to claim 1, characterized in that: The filter cover is conical in shape, with a sealing ring at its bottom, which is fixedly connected to the inner wall of the filter cylinder.

3. The painting device for tower corrosion protection that facilitates control of paint application according to claim 2, characterized in that: The filter cover includes a sealing section at the bottom, on which a mesh filter section is provided.

4. The painting device for tower corrosion protection that facilitates control of paint application according to claim 3, characterized in that: A storage cavity is formed between the outer wall of the sealing section and the inner wall of the filter cylinder.

5. The painting device for tower corrosion protection that facilitates control of paint application according to claim 4, characterized in that: The filter cartridge is provided with a cleaning port, and a sealing plate is detachably provided at the cleaning port.

6. The painting device for tower corrosion protection that facilitates control of paint application according to claim 5, characterized in that: The adjusting sleeve is provided with a positioning element, and the filter cylinder is provided with a positioning hole.

7. The painting device for tower corrosion protection that facilitates control of paint application according to claim 6, characterized in that: The positioning element includes a positioning rod, on which a positioning block is elastically disposed; in the initial state, the positioning block is located inside the positioning hole.

8. The painting device for tower corrosion protection that facilitates control of paint application according to claim 7, characterized in that: The bottom of the positioning block is equipped with a ball bearing.

9. The painting device for tower corrosion protection that facilitates control of paint application according to claim 1, characterized in that: The outer side of the adjustment sleeve is provided with anti-slip stripes.

10. The painting device for tower corrosion protection that facilitates control of paint application according to claim 1, characterized in that: The sewage trough has an isosceles trapezoidal cross section along the radial direction of the filter cylinder, with the end with the smaller side length located close to the inner wall of the filter cylinder.

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