Steel structure long-acting composite anti-corrosion coating spraying device for marine high-humidity climate

By improving the structural design of the spraying device and using a combination of drive motor and servo motor, multi-directional adjustment of the nozzle and uniform spraying of the coating are achieved, solving the problem of uneven spraying in marine high-humidity climates caused by traditional spraying devices and improving the corrosion resistance of steel structures.

CN121649065APending Publication Date: 2026-03-13CHINA RAILWAY 18TH BUREAU GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-05
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

Traditional spraying equipment uses fixed nozzles, which leads to uneven spraying of steel structures in the high humidity of the marine climate, resulting in localized areas that are too thick or too thin, thus reducing the spraying effect.

Method used

The device design, which includes a drive motor, rotating shaft, turntable, sliding rod and lifting assembly, enables the nozzle to swing left and right and adjust its height. The nozzle pitch angle is adjusted by a servo motor, and the combination of stirring blades and spiral blades ensures the uniformity and flowability of the coating.

Benefits of technology

It achieves uniform coating coverage on steel structure surfaces, improves spraying effect, adapts to the spraying needs of different parts, ensures stable coating quality, and is suitable for large-area uniform anti-corrosion coating spraying.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of steel structure spraying, and discloses a steel structure long-acting composite anti-corrosion coating spraying device for marine high-humidity climate, which comprises a driving motor, the output end of the driving motor is fixedly connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a rotating disc, and the eccentric position of the rotating disc is slidably connected with a sliding rod. A mounting ring is fixedly connected to one end of the sliding rod, a rotating rod is rotatably connected between the two sides of one end of the fixing frame, connecting plates are symmetrically and fixedly connected to the outer wall of the rotating rod, connecting rods are fixedly connected to the opposite sides of the connecting plates, and the inner wall of the mounting ring is slidably connected to the outer walls of the connecting rods. The driving motor drives the rotating shaft and the rotating disc to rotate, the sliding rod slides in the rotating disc, then the mounting ring is driven to slide on the outer wall of the connecting rod, the connecting plate drives the rotating rod to rotate, the lifting assembly and the nozzle are synchronously driven to swing left and right, and the coating can more evenly cover the surface of the steel structure.
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Description

Technical Field

[0001] This invention relates to the field of steel structure spraying technology, specifically to a long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates. Background Technology

[0002] Steel structure refers to a building structure system composed of steel as the main load-bearing component, connected by welding, bolting, or riveting. With the large-scale development of the global air transport industry, large aircraft maintenance service stations have put forward rigid requirements for the spatial adaptability, load-bearing capacity, and construction efficiency of core infrastructure maintenance hangars. Steel structures are usually selected for the construction of large aircraft hangars. However, in some marine high-humidity climate environments, steel structures are threatened by corrosion, reducing the safety of the overall structure. Therefore, it is necessary to spray anti-corrosion coatings on steel structures.

[0003] Traditional spraying equipment often uses fixed nozzles, which can only spray in a single direction. This can result in areas where the coating is too thick or too thin, and it cannot perform uniform spraying on steel structures, thus reducing the overall coating effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates. This solves the problem that traditional spraying devices often use fixed nozzles, which can only spray in a single direction, resulting in localized areas of excessively thick or thin coatings. This prevents uniform spraying of the steel structure and reduces the overall coating effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates, comprising a movable base and a mounting frame. A drive motor is mounted on one side of the mounting frame, and a rotating shaft is fixedly connected to the output end of the drive motor. A mounting bracket is fixedly connected to the top of the movable base, and a fixed frame is fixedly connected to the top of the mounting bracket. The outer wall of the rotating shaft is rotatably connected to the fixed frame. A turntable is fixedly connected to one end of the rotating shaft, and a sliding rod is slidably connected to the eccentric position of the turntable. A mounting ring is fixedly connected to one end of the sliding rod. A rotating rod is rotatably connected between the two sides of one end of the fixed frame. A connecting plate is symmetrically fixedly connected to the outer wall of the rotating rod, and a connecting rod is fixedly connected to the opposite side of the connecting plate. The inner wall of the mounting ring is slidably connected to the outer wall of the connecting rod. A lifting assembly is mounted on the other side of the connecting plate.

[0006] By adopting the above technical solution, the drive motor drives the rotating shaft to rotate, which in turn drives the turntable to rotate. During the rotation of the turntable, the sliding rod slides inside the turntable, simultaneously causing the mounting ring to slide on the connecting rod. The sliding of the mounting ring causes the connecting plate to rotate around the rotating rod, which in turn causes the rotating rod and the lifting assembly to swing. This allows the nozzle to swing left and right during the spraying process, expanding the spraying range and enabling the coating to cover the steel structure surface more evenly. This avoids the problem of localized over- or under-coating, significantly improving the spraying effect on the steel structure. It is especially suitable for the need for large-area and uniform anti-corrosion coating spraying on steel structures in marine high-humidity climates.

[0007] Preferably, the lifting assembly includes a fixed frame, one side of which is fixedly connected to one side of a connecting plate. A first motor is mounted on the top of the fixed frame, and a threaded rod is fixedly connected to the output end of the first motor. One end of the threaded rod is rotatably connected to the bottom of the fixed frame. A moving block is threadedly connected to the outer wall of the threaded rod, and a guide rod is slidably connected inside the moving block. The two ends of the guide rod are fixedly connected to the top and bottom of the fixed frame, respectively.

[0008] Preferably, a mounting base is fixedly connected to one side of the movable block, a servo motor is mounted on one side of the mounting base, a rotating shaft is fixedly connected to the output end of the servo motor, one end of the rotating shaft is rotatably connected to the other side of the mounting base, and a movable block is mounted on the outer wall of the rotating shaft.

[0009] Preferably, a connecting pipe is fixedly connected to one side of the movable block, and nozzles are uniformly fixedly connected to the outer wall of the connecting pipe.

[0010] Preferably, the other side of the mounting base is evenly provided with scale lines, and a pointer is fixedly connected to one side of the rotating shaft.

[0011] Preferably, a storage cylinder is fixedly connected to the top of the movable base, and the bottom of the mounting frame is fixedly connected to the top of the storage cylinder.

[0012] Preferably, a driving bevel gear is installed on the outer wall of the rotating shaft, the tooth end of the driving bevel gear is meshed with a driven bevel gear, the inner wall of the driven bevel gear is fixedly connected to a stirring shaft, and the outer wall of the stirring shaft is rotatably connected to a storage cylinder.

[0013] Preferably, stirring blades are uniformly fixedly connected to the top of the stirring shaft, spiral blades are fixedly connected to the bottom of the stirring shaft, scrapers are symmetrically fixedly connected to the top of the stirring shaft, and the outer wall of the scraper is attached to the inner wall of the storage cylinder.

[0014] Preferably, a feed pipe is fixedly connected to the top of the storage cylinder, a discharge pipe is fixedly connected to the bottom of the storage cylinder, a pump is fixedly connected to one end of the discharge pipe, the outer wall of the pump is installed on the top of the movable base, a conveying pipe is fixedly connected to the output end of the pump, and one end of the conveying pipe is fixedly connected to the bottom of the connecting pipe.

[0015] Preferably, a battery is installed on the top of the movable base, and a control panel is installed on the outer wall of the storage cylinder.

[0016] Working principle: The battery provides independent power to the electrical components inside the device. The operator operates through the control panel. First, start the drive motor. Its output end drives the rotating shaft to rotate. The rotating shaft drives the turntable to rotate, causing the sliding rod to slide inside the turntable. This in turn drives the mounting ring to slide on the outer wall of the connecting rod, causing the connecting plate to drive the rotating rod to rotate. Simultaneously, it drives the lifting assembly and the nozzle to swing left and right. Restart the first motor, its output end drives the threaded rod to rotate. Under the guidance of the guide rod, the moving block moves up and down along the guide rod to adjust the nozzle height. When the nozzle pitch angle needs to be adjusted, start the servo motor, its output end drives the rotating shaft to rotate. The rotating shaft drives the moving block, connecting pipe and nozzle to rotate, and the angle is accurately positioned by combining the pointer and scale line. The rotating shaft simultaneously drives the active bevel gear to rotate, meshing with the driven bevel gear, which in turn drives the stirring shaft to rotate, causing the stirring blades, spiral blades, and scraper to rotate and stir the coating in the storage cylinder; finally, the pump is started, and the pump draws the coating through the discharge pipe, and delivers it to the nozzle through the conveying pipe and connecting pipe, from which the coating is sprayed out.

[0017] This invention provides a long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates. It has the following beneficial effects: 1. This invention drives a rotating shaft to rotate via a drive motor, causing a sliding rod to slide within a turntable. The sliding of the sliding rod causes the mounting ring to slide on the outer wall of the connecting rod. When the mounting ring slides, it causes the connecting plate to rotate the rotating rod. When the connecting plate rotates the rotating rod, it also causes the lifting assembly to swing, allowing the nozzle to swing left and right during the spraying process, expanding the spraying range, making the paint more evenly cover the steel structure surface, avoiding localized over- or under-coating, and improving the spraying effect.

[0018] 2. This invention uses a servo motor to drive the rotating shaft, which in turn causes the movable block to rotate, thereby changing the pitch angle of the connecting pipe and the nozzle. At the same time, the pointer will rotate with the rotating shaft. The operator can use the scale line to accurately adjust the nozzle to the appropriate pitch position. Through the precise angle adjustment function, the device can adapt to the spraying needs of different parts such as the inclined surface or corner of the steel structure, ensuring that the paint covers the steel structure surface in all directions without dead angles.

[0019] 3. When the rotating shaft of this invention rotates, the active bevel gear drives the driven bevel gear meshing with its tooth end to rotate. The driven bevel gear drives the stirring shaft to rotate, so that the stirring blades stir the liquid coating inside the storage cylinder, avoiding sedimentation and stratification. The spiral blades can promote the flow of coating at the bottom of the storage cylinder and prevent coating from accumulating at the bottom. The outer wall of the scraper is attached to the inner wall of the storage cylinder and can scrape off the coating adhering to the inner wall, ensuring the quality stability of the coating in the storage cylinder. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the fixing frame of the present invention; Figure 3 This is a partial structural diagram of the mounting frame of the present invention; Figure 4 This is a partial structural diagram of the fixed frame of the present invention; Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a partial structural diagram of the storage cylinder of the present invention.

[0021] The components include: 1. Movable base; 2. Mounting frame; 201. Drive motor; 202. Rotating shaft; 203. Mounting bracket; 204. Fixed bracket; 205. Turntable; 206. Sliding rod; 207. Mounting ring; 208. Rotating rod; 209. Connecting plate; 210. Connecting rod; 3. Fixed frame; 301. First motor; 302. Threaded rod; 303. Movable block; 304. Guide rod; 4. Mounting base; 401. Servo motor. 402. Machine; 403. Rotating shaft; 404. Moving block; 405. Connecting pipe; 406. Nozzle; 5. Scale line; 501. Pointer; 6. Driving bevel gear; 601. Storage cylinder; 602. Driven bevel gear; 603. Stirring shaft; 7. Stirring blade; 701. Spiral blade; 702. Scraper; 8. Feed pipe; 801. Discharge pipe; 802. Pump; 803. Conveying pipe; 9. Battery; 901. Control panel. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described 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.

[0023] Please see the appendix Figure 1 -Appendix Figure 3This invention provides a long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates, including a movable base 1 and a mounting frame 2. A drive motor 201 is mounted on one side of the mounting frame 2, and a rotating shaft 202 is fixedly connected to the output end of the drive motor 201. A mounting frame 203 is fixedly connected to the top of the movable base 1, and a fixing frame 204 is fixedly connected to the top of the mounting frame 203. The outer wall of the rotating shaft 202 is rotatably connected to the fixing frame 204. A turntable 205 is fixedly connected to one end of the rotating shaft 202. A sliding rod 206 is slidably connected to the eccentric position of the turntable 205. A mounting ring 207 is fixedly connected to one end of the sliding rod 206. A rotating rod 208 is rotatably connected between the two sides of one end of the fixing frame 204. A connecting plate 209 is symmetrically fixedly connected to the outer wall of the rotating rod 208. A connecting rod 210 is fixedly connected to the opposite side of the connecting plate 209. The inner wall of the mounting ring 207 is slidably connected to the outer wall of the connecting rod 210. A lifting assembly is mounted on the other side of the connecting plate 209.

[0024] Specifically, during the spraying operation, the drive motor 201 is started, and its output end drives the rotating shaft 202 to rotate. The rotating shaft 202 drives the turntable 205 to start rotating. During the rotation of the turntable 205, the sliding rod 206 slides within the turntable 205. The sliding of the sliding rod 206 causes the mounting ring 207 to slide on the outer wall of the connecting rod 210. When the mounting ring 207 slides, it causes the connecting plate 209 to drive the rotating rod 208 to rotate. When the connecting plate 209 drives the rotating rod 208 to rotate, it also causes the lifting component to swing, so that the nozzle 405 can swing left and right during the spraying process, expanding the spraying range and making the paint more evenly cover the steel structure surface. This avoids local spraying that is too thick or too thin, improves the spraying effect, and meets the requirements for large-area uniform anti-corrosion coating spraying of steel structures in marine high-humidity climates. Through the coordinated operation of the lifting component, the nozzle 405 can be adjusted to the optimal spraying position, further improving the spraying effect.

[0025] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 4 The lifting assembly includes a fixed frame 3, one side of which is fixedly connected to one side of a connecting plate 209. A first motor 301 is installed on the top of the fixed frame 3. A threaded rod 302 is fixedly connected to the output end of the first motor 301. One end of the threaded rod 302 is rotatably connected to the bottom of the fixed frame 3. A moving block 303 is threadedly connected to the outer wall of the threaded rod 302. A guide rod 304 is slidably connected inside the moving block 303. The two ends of the guide rod 304 are fixedly connected to the top and bottom of the fixed frame 3, respectively.

[0026] Specifically, the operator starts the first motor 301 through the control panel 901. Its output end drives the threaded rod 302 to rotate. Under the guidance of the guide rod 304, the moving block 303 can only move up and down along the direction of the guide rod 304. By moving the moving block 303 up and down, the height of the nozzle 405 can be flexibly adjusted. According to the different heights and shapes of the steel structure, the nozzle 405 can be adjusted to the optimal spraying position to ensure that the paint is accurately and evenly sprayed on the surface of the steel structure, further improving the spraying accuracy and effect, and meeting the anti-corrosion spraying requirements of steel structures of different specifications in marine high-humidity climates.

[0027] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 4 Appendix Figure 5 A mounting base 4 is fixedly connected to one side of the movable block 303. A servo motor 401 is mounted on one side of the mounting base 4. A rotating shaft 402 is fixedly connected to the output end of the servo motor 401. One end of the rotating shaft 402 is rotatably connected to the other side of the mounting base 4. A movable block 403 is mounted on the outer wall of the rotating shaft 402. A connecting pipe 404 is fixedly connected to one side of the movable block 403. Nozzles 405 are evenly fixedly connected to the outer wall of the connecting pipe 404. Scale lines 5 are evenly arranged on the other side of the mounting base 4. A pointer 501 is fixedly connected to one side of the rotating shaft 402.

[0028] Specifically, when the pitch angle of nozzle 405 needs to be adjusted, the operator starts the servo motor 401 through the control panel 901. Its output drives the rotating shaft 402 to rotate. The rotation of the rotating shaft 402 causes the movable block 403 to rotate accordingly. The rotation of the movable block 403 drives the connecting pipe 404 and nozzle 405 to change the pitch angle. At the same time, the pointer 501 will rotate with the rotating shaft 402. With the help of the scale line 5, the operator can accurately adjust the nozzle 405 to the appropriate pitch position. Through the precise angle adjustment function, the device can adapt to the spraying needs of different parts such as the inclined surface or corner of the steel structure, ensuring that the paint covers the steel structure surface in all directions without dead angles, improving the spraying effect of the steel structure, and enhancing the corrosion resistance of the steel structure in the high humidity of the marine climate. With the cooperation of the movable base 1, the steel structure can be sprayed comprehensively.

[0029] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 6A storage cylinder 601 is fixedly connected to the top of the movable base 1, and the bottom of the mounting frame 2 is fixedly connected to the top of the storage cylinder 601. A driving bevel gear 6 is installed on the outer wall of the rotating shaft 202, and the tooth ends of the driving bevel gear 6 are meshed with the driven bevel gear 602. A stirring shaft 603 is fixedly connected to the inner wall of the driven bevel gear 602, and the outer wall of the stirring shaft 603 is rotatably connected inside the storage cylinder 601. Stirring blades 7 are evenly fixedly connected to the top of the stirring shaft 603, and a spiral blade is fixedly connected to the bottom of the stirring shaft 603. Scrapers 702 are symmetrically fixedly connected to the top of the stirring shaft 603 and the outer wall of the scrapers 702 is attached to the inner wall of the storage cylinder 601. The top of the storage cylinder 601 is fixedly connected to the feed pipe 8, and the bottom of the storage cylinder 601 is fixedly connected to the discharge pipe 801. One end of the discharge pipe 801 is fixedly connected to the pump 802. The outer wall of the pump 802 is installed on the top of the movable base 1. The output end of the pump 802 is fixedly connected to the conveying pipe 803. One end of the conveying pipe 803 is fixedly connected to the bottom of the connecting pipe 404.

[0030] Specifically, when the rotating shaft 202 rotates, the driving bevel gear 6 drives the driven bevel gear 602, which meshes with its tooth end, to rotate. The driven bevel gear 602 drives the stirring shaft 603 to rotate. During the rotation of the stirring shaft 603, the stirring blade 7, the spiral blade 701, and the scraper 702 will rotate. The stirring blade 7 stirs the liquid coating inside the storage cylinder 601, making the coating evenly mixed and avoiding sedimentation and stratification. The spiral blade 701 can promote the flow of coating at the bottom of the storage cylinder 601 and prevent the coating from accumulating at the bottom. The outer wall of the scraper 702 is attached to the inner wall of the storage cylinder 601 and can scrape off the coating adhering to the inner wall, preventing the coating from drying and affecting the spraying quality and normal use of the storage cylinder 601. This ensures the stability of the coating quality in the storage cylinder 601 and provides a reliable coating guarantee for high-quality spraying operations. Before spraying, liquid anti-corrosion coating is injected into the storage cylinder 601 through the feed pipe 8. During spraying, the operator starts the pump 802 through the control panel 901. The pump 802 draws the coating from the storage cylinder 601 through the discharge pipe 801, and then delivers the coating to the delivery pipe 803 through the output end of the pump 802. The delivery pipe 803 then delivers the coating to the connecting pipe 404, and finally sprays it evenly through multiple nozzles 405. This ensures a stable and continuous supply of coating to the nozzles 405, ensuring the continuity and uniformity of the spraying operation, improving spraying efficiency, and reducing spraying quality problems caused by unstable coating supply.

[0031] Please see the appendix Figure 1 A battery 9 is installed on the top of the mobile base 1, and a control panel 901 is installed on the outer wall of the storage cylinder 601.

[0032] Specifically, battery 9 provides an independent power supply to the electrical components inside the device, enabling the device to work normally without an external power source, thus increasing the device's flexibility and applicability. Through the control panel 901, operators can centrally operate and control the electrical components inside the device, simplifying the operation process and improving the convenience and accuracy of operation.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates, comprising a movable base (1) and a mounting frame (2), characterized in that: A drive motor (201) is installed on one side of the mounting frame (2). A rotating shaft (202) is fixedly connected to the output end of the drive motor (201). A mounting bracket (203) is fixedly connected to the top of the movable base (1). A fixing bracket (204) is fixedly connected to the top of the mounting bracket (203). The outer wall of the rotating shaft (202) is rotatably connected to the fixing bracket (204). A turntable (205) is fixedly connected to one end of the rotating shaft (202). The turntable (205) is slidably connected to the eccentric position of the turntable (205). There is a sliding rod (206), one end of which is fixedly connected to an installation ring (207). A rotating rod (208) is rotatably connected between the two sides of one end of the fixing frame (204). A connecting plate (209) is symmetrically fixedly connected to the outer wall of the rotating rod (208). A connecting rod (210) is fixedly connected to the opposite side of the connecting plate (209). The inner wall of the installation ring (207) is slidably connected to the outer wall of the connecting rod (210). A lifting assembly is installed on the other side of the connecting plate (209).

2. The long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates according to claim 1, characterized in that: The lifting assembly includes a fixed frame (3), one side of which is fixedly connected to one side of a connecting plate (209). A first motor (301) is installed on the top of the fixed frame (3). A threaded rod (302) is fixedly connected to the output end of the first motor (301). One end of the threaded rod (302) is rotatably connected to the bottom of the fixed frame (3). A moving block (303) is threadedly connected to the outer wall of the threaded rod (302). A guide rod (304) is slidably connected inside the moving block (303). The two ends of the guide rod (304) are fixedly connected to the top and bottom of the fixed frame (3), respectively.

3. The long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates according to claim 2, characterized in that: A mounting base (4) is fixedly connected to one side of the movable block (303), a servo motor (401) is mounted on one side of the mounting base (4), a rotating shaft (402) is fixedly connected to the output end of the servo motor (401), one end of the rotating shaft (402) is rotatably connected to the other side of the mounting base (4), and a movable block (403) is mounted on the outer wall of the rotating shaft (402).

4. The long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates according to claim 3, characterized in that: A connecting pipe (404) is fixedly connected to one side of the movable block (403), and nozzles (405) are uniformly fixedly connected to the outer wall of the connecting pipe (404).

5. The long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates according to claim 3, characterized in that: The other side of the mounting base (4) is evenly provided with scale lines (5), and a pointer (501) is fixedly connected to one side of the rotating shaft (402).

6. The long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates according to claim 1, characterized in that: The top of the movable base (1) is fixedly connected to the storage cylinder (601), and the bottom of the mounting frame (2) is fixedly connected to the top of the storage cylinder (601).

7. The long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates according to claim 1, characterized in that: The outer wall of the rotating shaft (202) is equipped with an active bevel gear (6), the tooth end of the active bevel gear (6) is meshed with a driven bevel gear (602), the inner wall of the driven bevel gear (602) is fixedly connected with a stirring shaft (603), and the outer wall of the stirring shaft (603) is rotatably connected to the storage cylinder (601).

8. The long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates according to claim 7, characterized in that: The top of the stirring shaft (603) is uniformly fixedly connected with stirring blades (7), the bottom of the stirring shaft (603) is fixedly connected with spiral blades (701), and the top of the stirring shaft (603) is symmetrically fixedly connected with scrapers (702). The outer wall of the scraper (702) is attached to the inner wall of the storage cylinder (601).

9. The long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates according to claim 6, characterized in that: The top of the storage cylinder (601) is fixedly connected to the feed pipe (8), the bottom of the storage cylinder (601) is fixedly connected to the discharge pipe (801), one end of the discharge pipe (801) is fixedly connected to the pump (802), the outer wall of the pump (802) is installed on the top of the movable base (1), the output end of the pump (802) is fixedly connected to the conveying pipe (803), and one end of the conveying pipe (803) is fixedly connected to the bottom of the connecting pipe (404).

10. The long-lasting composite anti-corrosion coating spraying device for steel structures in marine high-humidity climates according to claim 6, characterized in that: A battery (9) is installed on the top of the mobile base (1), and a control panel (901) is installed on the outer wall of the storage cylinder (601).