An anti-corrosion nut spraying device for subsea operations

Abstract

The utility model belongs to nut spraying technical field, concretely relates to an anticorrosive nut spraying device for subsea operation, including spraying box, the upper end of spraying box is assembled with first electric push rod, the output of first electric push rod extends to the inside of spraying box, the output of first electric push rod is assembled with moving mechanism, both sides of moving mechanism one end are all assembled with rotating mechanism, the upper end of spraying box is fixed with coating tank, the upper end of spraying box and located coating tank one end are fixed with delivery pump, the inside of two angle adjusting mechanisms is equipped with nozzle. This utility model can adjust nozzle overall position, angle adjusting mechanism adjusts nozzle spraying angle through first electric push rod and moving mechanism cooperation, has realized the accurate, even spraying of nut, has promoted the adaptability of device to different specifications nut, has avoided the dead angle of spraying, has effectively guaranteed the anticorrosive effect of nut and has improved the spraying operation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of nut spraying technology, specifically relating to a corrosion-resistant nut spraying device for seabed operations. Background Technology

[0002] In the field of subsea operations, nuts, as crucial connecting components, are subjected to harsh environmental conditions such as seawater corrosion and salt spray erosion for extended periods. Their corrosion resistance directly determines the operational stability and service life of subsea equipment, making high-quality anti-corrosion spraying treatment of nuts particularly critical. However, current anti-corrosion spraying devices for nuts used in subsea operations generally suffer from several technical shortcomings: Firstly, existing devices struggle to flexibly adjust the overall nozzle position and spraying angle. When dealing with nuts of different specifications, frequent adjustments to the equipment structure are often necessary, leading to cumbersome operation, significantly reduced adaptability to different nut sizes, and increased operating costs and time. Secondly, due to limitations in nozzle position and angle adjustment, spraying dead zones are easily created during the spraying process, resulting in uneven coating thickness on the nut surface. Some areas fail to form an effective anti-corrosion protective layer, making it difficult to meet the stringent anti-corrosion requirements of subsea operations. Based on these issues, this application proposes an anti-corrosion nut spraying device for subsea operations to address these problems. Utility Model Content

[0003] The purpose of this invention is to provide a corrosion-resistant nut spraying device for seabed operations. It can adjust the overall position of the nozzle and the spraying angle of the nozzle through the cooperation of the first electric push rod and the moving mechanism. This achieves precise and uniform spraying of the nuts, which not only improves the adaptability of the device to nuts of different specifications, but also avoids spraying dead corners, effectively ensures the corrosion protection effect of the nuts and improves the efficiency of spraying operations.

[0004] The specific technical solution adopted in this utility model is as follows: A corrosion-resistant nut spraying device for seabed operations includes a spraying box. A first electric push rod is mounted on the upper end of the spraying box, with its output end extending into the interior of the spraying box. A moving mechanism is mounted on the output end of the first electric push rod, and rotating mechanisms are mounted on both sides of one end of the moving mechanism. A paint tank is fixed to the upper end of the spraying box, and a delivery pump is fixed to the upper end of the spraying box and at one end of the paint tank. Two nozzles are fitted inside the two angle adjustment mechanisms, and the two nozzles and the delivery pump are fixedly connected via spraying pipes. The device also includes: A rotating mechanism is installed inside the spray box.

[0005] In a preferred embodiment, the moving mechanism includes a support plate, a first motor, a threaded rod, and two moving plates. The support plate is fixed to the lower end of the first electric push rod, the first motor is fixed to one side of the support plate, the threaded rod is rotatably connected to the inside of the support plate, and the output end of the first motor is fixedly connected to one side of the threaded rod. The threaded rod has two external threads on its outer side, and the two external threads have opposite directions of rotation. The two moving plates are threadedly connected to both sides of the outer side of the threaded rod.

[0006] In a preferred embodiment, a base is fixed to the lower end of the support plate, and the base is located at the lower end of the first motor.

[0007] In a preferred embodiment, the angle adjustment mechanism includes a housing, a second electric push rod, a connecting plate, a rack, a first rotating rod, a gear, and a fixing block. The housing is fixed to one end of a movable plate, the second electric push rod is fixed to the upper end of the housing, the connecting plate is fixed to the output end of the second electric push rod and is located inside the housing, the rack is fixed to the lower end of the connecting plate, the first rotating rod is rotatably connected to the inside of the housing and is located on one side of the rack, the gear is fixed to the outside of the first rotating rod and the rack and gear are meshed together, one end of the first rotating rod extends to the outside of the housing, the fixing block is fixed to one end of the first rotating rod and is located on the outside of the housing, and the nozzle is sleeved inside the fixing block.

[0008] In a preferred embodiment, the rotating mechanism includes a load-bearing plate, a second motor, a second rotating rod, and a rotating plate. The load-bearing plate is fixed to the lower end of the spray box, the second motor is mounted on the upper end of the load-bearing plate, the output end of the second motor extends into the interior of the spray box, the second rotating rod is fixed to the upper end of the second motor, and the rotating plate is fixed to the upper end of the second rotating rod.

[0009] In a preferred embodiment, a placement opening is provided on one side of the spray box, and a sliding plate is slidably connected inside the placement opening.

[0010] In a preferred embodiment, a discharge port is fixed to one end of the outer side of the spray box, and a filter plate is fixed inside the discharge port.

[0011] The technical effects achieved by this utility model are as follows: This utility model uses a first electric push rod and a moving mechanism to adjust the overall position of the nozzle and an angle adjustment mechanism to adjust the nozzle spraying angle, achieving precise and uniform spraying of nuts. This not only improves the device's adaptability to nuts of different specifications but also avoids spraying dead angles, effectively ensuring the corrosion resistance of the nuts and improving the efficiency of spraying operations. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the spray box of this utility model; Figure 3 This is a schematic diagram of the angle adjustment mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the support plate and the movable plate of this utility model.

[0013] The attached diagram lists the components represented by each number as follows: 10. Spraying box; 11. First electric push rod; 12. Moving mechanism; 13. Support plate; 14. First motor; 15. Threaded rod; 16. Moving plate; 17. Base; 20. Angle adjustment mechanism; 21. Outer shell; 22. Second electric push rod; 23. Connecting plate; 24. Rack; 25. First rotating rod; 26. Gear; 27. Fixing block; 30. Paint tank; 31. Delivery pump; 32. Nozzle; 33. Spraying pipe; 40. Rotating mechanism; 41. Load-bearing plate; 42. Second motor; 43. Second rotating rod; 44. Rotating plate; 45. Sliding plate; 46. Discharge port; 47. Filter plate. Detailed Implementation

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0017] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0018] Please see the appendix Figures 1 to 3As shown, this utility model provides a corrosion-resistant nut spraying device for seabed operations, including a spraying box 10. A first electric push rod 11 is mounted on the upper end of the spraying box 10. The output end of the first electric push rod 11 extends into the interior of the spraying box 10. A moving mechanism 12 is mounted on the output end of the first electric push rod 11. Angle adjustment mechanisms 20 are mounted on both sides of one end of the moving mechanism 12. A paint tank 30 is fixed to the upper end of the spraying box 10. A delivery pump 31 is fixed to the upper end of the spraying box 10 and at one end of the paint tank 30. Nozzles 32 are fitted inside the two angle adjustment mechanisms 20. The two nozzles 32 and the delivery pump 31 are fixedly connected via spraying pipes 33. The device also includes: Rotating mechanism 40 is assembled inside the spray box 10.

[0019] In this embodiment, regarding the working principle, the device uses the spray box 10 as the main working space. When anti-corrosion spraying is required on the nut, the nut is placed on the upper end of the rotating mechanism 40 inside the spray box 10. The first electric push rod 11 mounted on the upper end of the spray box 10 is activated, and its output end drives the moving mechanism 12 inside the spray box 10 to adjust its position in the up and down direction. The angle adjustment mechanism 20 mounted on both sides of one end of the moving mechanism 12 will drive the nozzle 32 sleeved inside it to adjust its angle, so that the nozzle 32 can accurately align with the part of the nut to be sprayed. Subsequently, the delivery pump 31 fixed on the upper end of the spray box 10 starts to work, and delivers the anti-corrosion coating stored in the coating tank 30 to the two nozzles 32 through the spray pipe 33. Finally, the nozzles 32 evenly spray the coating onto the surface of the rotating nut, completing the entire spraying process. Through the cooperation of the first electric push rod 11 and the moving mechanism 12, the overall position of the nozzle 32 can be flexibly adjusted to adapt to the spraying requirements of nuts of different specifications, thus improving the versatility of the device. At the same time, the angle adjustment mechanism 20 can adjust the spraying angle of the nozzle 32, and together with the rotating mechanism 40, it drives the nut to rotate, effectively avoiding spraying dead angles, ensuring uniform coating thickness on the nut surface, and guaranteeing anti-corrosion effect. In addition, the paint tank 30 and the delivery pump 31 form a stable paint supply system, which can continuously and stably deliver paint to the nozzle 32, avoiding spraying interruptions or coating defects caused by unstable paint supply, and improving spraying efficiency. It should be noted that the first electric push rod 11, the first motor 14, the second electric push rod 22, the delivery pump 31, and the second motor 42 are all remotely connected by wires and external points, and each actuator is controlled by a controller (not shown in the figure) located outside the spraying tank 10. The specific working principle will not be elaborated here. In the prior art, when the nozzle 32 rotates or moves, the spraying pipe 33 located inside the spraying tank 10 has sufficient length to facilitate the rotation or movement of the nozzle 32.

[0020] In a preferred embodiment, please refer to Figure 3The moving mechanism 12 includes a support plate 13, a first motor 14, a threaded rod 15, and two moving plates 16. The support plate 13 is fixed to the lower end of the first electric push rod 11. The first motor 14 is fixed to one side of the support plate 13. The threaded rod 15 is rotatably connected to the inside of the support plate 13, and the output end of the first motor 14 is fixedly connected to one side of the threaded rod 15. Two external threads are provided on the outer side of the threaded rod 15, and the two external threads have opposite directions of rotation. The two moving plates 16 are threaded to both sides of the outer side of the threaded rod 15. A base 17 is fixed to the lower end of the support plate 13, and the base 17 is located at the lower end of the first motor 14.

[0021] In this embodiment, the support plate 13 is fixed to the lower end of the first electric push rod 11, providing stable support for the entire mechanism; the first motor 14 is fixed to one side of the support plate 13, and after starting, its output end drives the threaded rod 15 fixedly connected to it to rotate inside the support plate 13; since the threaded rod 15 has two external threads with opposite directions on its outer side, and the two moving plates 16 are respectively threaded to both sides of the outer side of the threaded rod 15, the rotation of the threaded rod 15 will drive the two moving plates 16 to move synchronously in opposite directions, realizing the action of moving closer or further away from each other; at the same time, the base 17 fixed at the lower end of the support plate 13 is located at the lower end of the first motor 14, providing additional support for the first motor 14 and enhancing the operational stability. The movement of the two moving plates 16 is controlled by the rotation of the threaded rod 15 driven by the first motor 14, ensuring the synchronicity and consistency of the movement of the two moving plates 16 and improving the accuracy of position adjustment. The design of two external threads with opposite directions of rotation allows the two moving plates 16 to move in opposite directions at the same time, which greatly improves the adjustment efficiency and can quickly adapt to the spraying requirements of nuts of different sizes. The base 17 further stabilizes the installation of the first motor 14, reduces the vibration of the motor during operation, and ensures the stability of the entire moving mechanism 12. The combination of the support plate 13 and the first electric push rod 11 allows the moving mechanism 12 to move up and down as a whole with the first electric push rod 11. Combined with the horizontal adjustment of the two moving plates 16, the relevant components installed on the moving plates 16 (such as the angle adjustment mechanism 20 and the nozzle 32) can be adjusted in a larger space, thereby adapting to the spraying of more specifications of nuts and significantly improving the versatility and applicability of the device.

[0022] Secondly, please refer to the following as well. Figure 3The angle adjustment mechanism 20 includes a housing 21, a second electric push rod 22, a connecting plate 23, a rack 24, a first rotating rod 25, a gear 26, and a fixing block 27. The housing 21 is fixed to one end of the moving plate 16, the second electric push rod 22 is fixed to the upper end of the housing 21, the connecting plate 23 is fixed to the output end of the second electric push rod 22 and is located inside the housing 21, the rack 24 is fixed to the lower end of the connecting plate 23, the first rotating rod 25 is rotatably connected to the inside of the housing 21 and is located on one side of the rack 24, the gear 26 is fixed to the outside of the first rotating rod 25 and the rack 24 and the gear 26 are meshed together, one end of the first rotating rod 25 extends to the outside of the housing 21, the fixing block 27 is fixed to one end of the first rotating rod 25 and is located on the outside of the housing 21, and the nozzle 32 is sleeved inside the fixing block 27.

[0023] In this embodiment, the outer shell 21 is fixed to one end of the movable plate 16, and the second electric push rod 22 is fixed to the upper end of the outer shell 21. After the second electric push rod 22 is started, its output end drives the connecting plate 23 located inside the outer shell 21 to move up and down, thereby driving the rack 24 fixed to the lower end of the connecting plate 23 to move synchronously. Since the rack 24 is meshed with the gear 26 fixed outside the first rotating rod 25, and the first rotating rod 25 is rotatably connected inside the outer shell 21 and located on one side of the rack 24, the up and down movement of the rack 24 will drive the gear 26 to rotate, thereby driving the first rotating rod 25 to rotate synchronously. One end of the first rotating rod 25 extends to the outside of the outer shell 21, and the fixing block 27 fixed at its end rotates accordingly. The nozzle 32 sleeved inside the fixing block 27 will adjust its angle with the fixing block 27. The second electric push rod 22 drives the meshing transmission of the rack 24 and gear 26, converting linear motion into rotational motion. This allows for precise control of the rotation angle of the first rotating rod 25, thereby achieving accurate adjustment of the spraying angle of the nozzle 32 and ensuring that the paint accurately covers the surface of the nut. The outer shell 21 provides protection for the internal components such as the second electric push rod 22, rack 24, and gear 26, preventing paint adhesion or impurities from affecting the operation of the mechanism during spraying and extending its service life. The fixed block 27 firmly clamps the nozzle 32, preventing it from loosening or shifting during angle adjustment or spraying, ensuring the stability of the spraying position. The entire mechanism is connected to the moving mechanism 12 via the moving plate 16, allowing for position adjustment of the moving mechanism 12. This enables the nozzle 32 to both change angle and move position, improving its adaptability to nuts of different specifications and shapes, and further enhancing the uniformity and integrity of the anti-corrosion coating. It should be noted that the inner ends of the outer shell 21 are provided with sliding grooves, and the connecting plate 23 is slidably connected between the two sliding grooves. The two sliding grooves can limit and constrain the connecting plate 23 from both ends, so as to prevent the connecting plate 23 from shifting or tilting due to uneven force or external vibration.

[0024] To further understand and explain, Figure 2 For example, the rotating mechanism 40 includes a load-bearing plate 41, a second motor 42, a second rotating rod 43, and a rotating plate 44. The load-bearing plate 41 is fixed to the lower end of the spray box 10, the second motor 42 is mounted on the upper end of the load-bearing plate 41, the output end of the second motor 42 extends into the interior of the spray box 10, the second rotating rod 43 is fixed to the upper end of the second motor 42, and the rotating plate 44 is fixed to the upper end of the second rotating rod 43.

[0025] In this embodiment, the load-bearing plate 41 is fixed at the lower end of the spray box 10, providing stable support for the entire mechanism; the second motor 42 is mounted on the upper end of the load-bearing plate 41, and its output end extends into the interior of the spray box 10 and is fixedly connected to the lower end of the second rotating rod 43. After starting, it can directly drive the second rotating rod 43 to rotate; the rotating plate 44 fixed on the upper end of the second rotating rod 43 rotates synchronously with the second rotating rod 43, and the nut placed on the upper end of the rotating plate 44 will rotate accordingly, realizing all-round spraying operation.

[0026] In a preferred embodiment, please refer to Figure 1 The spray box 10 has a placement opening on one side, and a sliding plate 45 is slidably connected inside the placement opening.

[0027] In this embodiment, when it is necessary to place or remove the nut, the sliding plate 45 is slid to open the placement port. After the operation is completed, the sliding plate 45 is slid to close the placement port, forming a closed spraying space. The sliding connection between the sliding plate 45 and the placement port makes the switch action flexible and effortless, and facilitates quick operation by the operator.

[0028] Secondly, please refer to it again. Figure 2 A discharge port 46 is fixed at one end of the outer side of the spray box 10, and a filter plate 47 is fixed inside the discharge port 46.

[0029] In this embodiment, the exhaust port 46 fixed at one end of the outer side of the spray box 10 is the discharge channel for excess paint mist, volatile gases and a small amount of impurities generated during the spraying operation inside the spray box 10. The filter plate 47 fixed inside the exhaust port 46 filters the discharged substances. The filter plate 47 can effectively intercept excess paint particles, preventing them from being directly discharged into the external environment with the gas and causing pollution, thus reducing the impact on the surrounding air, equipment and operators.

[0030] The working principle of this utility is as follows: During operation, the operator slides the sliding plate 45 inside the placement opening on one side of the spray box 10 to open the placement opening. The nut to be sprayed is then placed on the upper end of the rotating plate 44 of the rotating mechanism 40 inside the spray box 10. The sliding plate 45 is then closed, creating a closed working space within the spray box 10. Next, the first electric push rod 11 mounted on the upper end of the spray box 10 is activated. Its output end drives the lower fixed moving mechanism 12 to move up and down. In the moving mechanism 12, the support plate 13 provides support for the entire mechanism. The first motor 14 on one side of the support plate 13 is activated. The output end of the first motor 14 drives the threaded rod 15 inside the support plate 13 to rotate. The threaded rod 15 has two external threads with opposite directions on its outer side, which are threaded to two moving plates 16 respectively. Therefore, the rotation of the threaded rod 15 drives the two moving plates 16 to move horizontally in opposite directions in sync, thereby adjusting the horizontal position of the angle adjustment mechanism 20 and the nozzle 32 assembled at one end of the moving plate 16. At the same time, the base 17 at the lower end of the support plate 13 enhances the operational stability of the first motor 14. Afterward, the second electric push rod 22 at the upper end of the outer shell 21 in the angle adjustment mechanism 20 is activated. Its output end drives the connecting plate 23 inside the outer shell 21 to move up and down. The rack 24 at the lower end of the connecting plate 23 moves synchronously. The rack 24 and the outer side of the first rotating rod 25 The gear 26 meshes, thereby driving the first rotating rod 25 to rotate inside the outer shell 21. A fixing block 27 is fixed to one end of the first rotating rod 25 extending to the outside of the outer shell 21. The nozzle 32, which is fitted inside the fixing block 27, rotates with the fixing block 27 to adjust the spraying angle until the nozzle 32 is precisely aligned with the part of the nut to be sprayed. Then, the delivery pump 31 located at one end of the paint tank 30 on the upper end of the spraying box 10 is started. The delivery pump 31 delivers the anti-corrosion paint in the paint tank 30 to the two nozzles 32 through the spraying pipe 33. At the same time, the second motor 42 on the upper end of the load-bearing plate 41 in the rotating mechanism 40 is started. The output end of the second motor 42 drives the extension The second rotating rod 43 inside the spray box 10 rotates, and the rotating plate 44 at the upper end of the second rotating rod 43 rotates accordingly. The nut placed on the rotating plate 44 rotates synchronously, and the nozzle 32 sprays the paint evenly onto the surface of the rotating nut. During the spraying process, excess paint mist, volatile gases, and a small amount of impurities generated inside the spray box 10 flow to the discharge port 46 fixed at one end of the spray box 10 under the action of internal air pressure. After being filtered by the filter plate 47 fixed inside the discharge port 46, liquid paint particles and solid impurity particles are intercepted, and the gas that meets the emission standards is discharged through the discharge port 46, finally completing the anti-corrosion spraying operation of the nut. Throughout the process, the first electric push rod 11, the first motor 14, the second electric push rod 22, the delivery pump 31, and the second motor 42 are all electrically connected to an external power supply through wires and are controlled by a controller on the outside of the spray box 10.

[0031] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model shall be implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A corrosion-resistant nut spraying device for seabed operations, comprising a spraying box (10), characterized in that: The upper end of the spray box (10) is equipped with a first electric push rod (11), the output end of the first electric push rod (11) extends into the interior of the spray box (10), the output end of the first electric push rod (11) is equipped with a moving mechanism (12), and both sides of one end of the moving mechanism (12) are equipped with angle adjustment mechanisms (20). The upper end of the spray box (10) is fixed with a paint tank (30), and the upper end of the spray box (10) and one end of the paint tank (30) is fixed with a delivery pump (31). The two angle adjustment mechanisms (20) are fitted with nozzles (32), and the two nozzles (32) and the delivery pump (31) are fixedly connected by a spray pipe (33). The spray box (10) also includes: Rotating mechanism (40) is installed inside the spray box (10).

2. The anti-corrosion nut spraying device for seabed operations according to claim 1, characterized in that: The moving mechanism (12) includes a support plate (13), a first motor (14), a threaded rod (15), and two moving plates (16). The support plate (13) is fixed to the lower end of the first electric push rod (11). The first motor (14) is fixed to one side of the support plate (13). The threaded rod (15) is rotatably connected to the inside of the support plate (13), and the output end of the first motor (14) is fixedly connected to one side of the threaded rod (15). Two external threads are provided on the outer side of the threaded rod (15), and the two external threads have opposite directions of rotation. The two moving plates (16) are threadedly connected to the two sides of the outer side of the threaded rod (15).

3. The anti-corrosion nut spraying device for seabed operations according to claim 2, characterized in that: The lower end of the support plate (13) is fixed with a base (17), and the base (17) is located at the lower end of the first motor (14).

4. The anti-corrosion nut spraying device for seabed operations according to claim 1, characterized in that: The angle adjustment mechanism (20) includes a housing (21), a second electric push rod (22), a connecting plate (23), a rack (24), a first rotating rod (25), a gear (26), and a fixing block (27). The housing (21) is fixed to one end of the moving plate (16), the second electric push rod (22) is fixed to the upper end of the housing (21), the connecting plate (23) is fixed to the output end of the second electric push rod (22), and the connecting plate (23) is located inside the housing (21). The rack (24) is fixed to the lower end of the connecting plate (23). The first rotating rod (25) is rotatably connected to the inside of the outer shell (21), and the first rotating rod (25) is located on one side of the rack (24). The gear (26) is fixed to the outside of the first rotating rod (25), and the rack (24) and the gear (26) are meshed. One end of the first rotating rod (25) extends to the outside of the outer shell (21). The fixing block (27) is fixed to one end of the first rotating rod (25), and the fixing block (27) is located on the outside of the outer shell (21). The nozzle (32) is sleeved inside the fixing block (27).

5. The anti-corrosion nut spraying device for seabed operations according to claim 1, characterized in that: The rotating mechanism (40) includes a load-bearing plate (41), a second motor (42), a second rotating rod (43), and a rotating plate (44). The load-bearing plate (41) is fixed to the lower end of the spray box (10). The second motor (42) is mounted on the upper end of the load-bearing plate (41). The output end of the second motor (42) extends into the interior of the spray box (10). The second rotating rod (43) is fixed to the upper end of the second motor (42). The rotating plate (44) is fixed to the upper end of the second rotating rod (43).

6. The anti-corrosion nut spraying device for seabed operations according to claim 1, characterized in that: The spray box (10) has a placement opening on one side, and a sliding plate (45) is slidably connected inside the placement opening.

7. The anti-corrosion nut spraying device for seabed operations according to claim 1, characterized in that: A discharge port (46) is fixed at one end of the outer side of the spray box (10), and a filter plate (47) is fixed inside the discharge port (46).

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