Large-diameter steel pipe pile inner wall spraying equipment

Abstract

This invention relates to the field of pipeline spraying technology, and more particularly to a spraying device for the inner wall of large-diameter steel pipe piles, comprising: a mobile trolley, which is magnetically attached to the inner wall of the steel pipe pile and is equipped with a paint tank; a drive assembly, which drives the mobile trolley to move along the axial direction of the steel pipe pile; a spraying assembly, which includes a rotating mechanism, a lifting mechanism, a delivery pipe, an extension pipe, a paint nozzle, and a pumping mechanism; an anti-splash assembly, which includes an airflow delivery mechanism and an air curtain mechanism; and a cleaning assembly, which includes a switching mechanism and a mixing mechanism. This invention integrates spraying and cleaning functions in the delivery pipe, and, in conjunction with the pumping system, stably delivers paint (or cleaning agent), significantly improving the efficiency, continuity of operation, and ease of maintenance of spraying the inner wall of ultra-large diameter steel pipe piles.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pipeline spraying technology, in particular to a large-diameter steel pipe pile inner side wall spraying equipment. BACKGROUND

[0002] With the development of the wind power industry, the demand for super large diameter steel pipe piles in the offshore wind power industry is increasing, and the corrosion and spraying requirements are improving. At present, there is no application case of intelligent spraying equipment for super large diameter steel pipe piles, and manual spraying is used in the industry.

[0003] However, the following obvious defects exist when manually spraying the inner wall of the large-diameter pipe pile: first, the manual spraying method cannot effectively cover the inner wall of the super large diameter steel pipe pile, resulting in uneven coating and affecting the coating quality and corrosion effect; secondly, during the spraying process, the coating is easy to splash to the completed area, causing surface pollution, uneven coating and material waste; finally, the residual coating in the equipment after spraying is difficult to clean efficiently, which is easy to solidify and block the conveying pipeline, increasing the maintenance cost. SUMMARY

[0004] The purpose of the present application is to provide a large-diameter steel pipe pile inner side wall spraying equipment to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: A large-diameter steel pipe pile inner side wall spraying equipment, comprising: A moving trolley is attached to the inner wall of the steel pipe pile by a magnetic attraction assembly, and the moving trolley is provided with a coating tank; A drive assembly is used to drive the moving trolley to move along the axial direction of the steel pipe pile; A spraying assembly includes a rotating mechanism, a lifting mechanism, a conveying pipe, an extension pipe, a coating spray head and a pumping mechanism, the rotating mechanism is used to drive the conveying pipe to rotate, the lifting mechanism is used to adjust the height of the conveying pipe, the extension pipe is connected to the conveying pipe on both sides, the extension pipe is connected to the coating spray head, and the pumping mechanism is used to convey the liquid in the coating tank to the conveying pipe; A splash-proof assembly includes an air flow conveying mechanism and an air curtain mechanism, the air flow conveying mechanism is used to convey air to the air curtain mechanism, and the air curtain mechanism is used to form an air curtain on one side of the moving trolley to prevent the coating from flying onto the inner wall of the steel pipe pile that has been sprayed; The cleaning assembly includes a switching mechanism and a mixing mechanism. During cleaning, the paint tank is filled with cleaning fluid. The switching mechanism is used to connect the airflow delivery mechanism and the mixing mechanism when cleaning is required. The mixing mechanism is used to atomize the cleaning fluid inside the delivery pipe.

[0006] Preferably, the mobile trolley is equipped with wheels, and the drive assembly includes a drive motor for driving the wheels on one side of the mobile trolley to rotate.

[0007] Preferably, the magnetic suction assembly includes a magnetic block, which is coaxially connected to the movable wheel.

[0008] Preferably, the lifting mechanism includes a hydraulic lifting platform, which is disposed on the mobile trolley; the rotating mechanism includes a rotary motor and a rotary gear, which is disposed on the hydraulic lifting platform; the output end of the rotary motor is connected to the rotary gear; the conveying pipe is fixedly connected to a transmission gear; and the rotary gear and the transmission gear mesh with each other.

[0009] Preferably, the input end of the delivery pipe is connected to a quick connector, the pumping mechanism includes a piston pump, the output end of the piston pump is connected to the delivery pipe via a quick connector, and the piston pump is used to deliver liquid from the paint tank to the delivery pipe.

[0010] Preferably, the airflow conveying mechanism includes an air pump, an air pipe, a slider, and an electromagnetic opening valve. The air pump is disposed on the conveying pipe, the output end of the air pump is connected to the air pipe, the air pipe is connected to the electromagnetic opening valve, and the electromagnetic opening valve is connected to the slider.

[0011] Preferably, the air curtain mechanism includes a connector, a pressure opening valve, and an air nozzle. The pressure opening valve and the air nozzle are respectively connected to both sides of the connector. When the slider and the connector are connected to each other, the electromagnetic opening valve will block the pressure opening valve, and at this time the air nozzle and the air pipe are connected to each other.

[0012] Preferably, the mixing mechanism includes a mixing block, a connecting valve, and a pressure relief valve; the switching mechanism includes a switching push rod, a docking opening valve one, and a docking opening valve two. The mixing block is disposed on the delivery pipe, and the mixing block has a mixing chamber and an airflow inlet. The mixing chamber has two outlets, which are respectively connected to the connecting valve and the pressure relief valve. When in the spraying state, the connecting valve is open; when in the cleaning state, the connecting valve is closed. The airflow inlet is connected to the docking opening valve one, and the slider is connected to the docking opening valve two. The switching push rod is used to drive the slider to move. When the docking opening valve one and the docking opening valve two are docked together, the airflow inlet and the air pipe are interconnected.

[0013] Preferably, there are two extension tubes, which are symmetrically arranged on both sides of the conveying pipe.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention, through the coordinated action of a magnetically attached mobile trolley, drive assembly, rotating mechanism, and lifting mechanism, enables the equipment to autonomously move, precisely position, and uniformly cover large areas of the steel pipe pile, significantly improving construction efficiency and quality. Simultaneously, the air curtain-type anti-splash assembly effectively isolates the sprayed area from the completed area, greatly reducing paint rebound contamination, ensuring coating surface quality, and saving paint. The integrated cleaning assembly (combining a switching mechanism and a mixing mechanism) can quickly switch the pipeline cleaning mode to atomized cleaning fluid flushing, thoroughly removing residues from the pipeline and nozzle, preventing blockages, ensuring long-term reliable equipment operation, and simplifying maintenance. This invention integrates spraying and cleaning functions in the delivery pipe, working in conjunction with a pumping system to stably deliver paint (or cleaning agent), significantly improving the efficiency, continuity of operation, and ease of maintenance of spraying inside ultra-large diameter steel pipe piles. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention. Figure One ; Figure 2 This is a three-dimensional structural diagram of the present invention. Figure Two ; Figure 3 This is a three-dimensional structural diagram of the present invention. Figure Three ; Figure 4 This is a three-dimensional structural diagram of the present invention; Figure 5 This is a schematic diagram of the connection structure between the conveying pipe and the rotary motor of the present invention; Figure 6 This is a schematic diagram of the connection structure between the rotating gear and the conveying pipe of the present invention; Figure 7 This is a schematic diagram showing the positions and structures of the slider, air pump, and connector of the present invention; Figure 8 This is a three-dimensional structural diagram of the connector of the present invention; Figure 9 This is a schematic diagram of the internal structure of the delivery pipe of the present invention (the delivery pipe is shown in cross-section). Figure 10 This is a schematic diagram of the three-dimensional structure of the slider of the present invention; Figure 11 This is a schematic diagram of the three-dimensional structure of the hybrid block of the present invention; Figure 12 This is a schematic diagram of the internal structure of the hybrid block of the present invention.

[0016] In the diagram: 1. Moving trolley, 2. Paint tank, 3. Delivery pipe, 4. Extension pipe, 5. Paint nozzle, 6. Moving wheel, 7. Drive motor, 8. Magnetic block, 9. Hydraulic lifting platform, 10. Rotary motor, 11. Rotary gear, 12. Quick connector, 13. Piston pump, 14. Air pump, 15. Air pipe, 16. Slider, 17. Electromagnetic opening valve, 18. Connector, 19. Pressure opening valve, 20. Air nozzle, 21. Mixing block, 22. Connecting valve, 23. Pressure relief valve, 24. Switching push rod, 25. Docking opening valve one, 26. Docking opening valve two, 2101. Mixing chamber, 2102. Airflow inlet. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.

[0018] Please see Figures 1-12 The present invention provides a technical solution: A spraying device for the inner wall of large-diameter steel pipe piles, as shown in the instruction manual. Figure 1 As shown, it includes: The mobile trolley 1 is attached to the inner wall of the steel pipe pile by a magnetic attachment component. The mobile trolley 1 is used to drive other components of the large-diameter steel pipe pile inner wall spraying equipment to move along the axial direction of the steel pipe pile. The mobile trolley 1 is equipped with a paint tank 2, which is used to store the paint (or cleaning agent) for spraying. The drive assembly is used to drive the mobile trolley 1 to move along the axial direction of the steel pipe pile; The spraying assembly includes a rotating mechanism, a lifting mechanism, a conveying pipe 3, an extension pipe 4, a paint nozzle 5, and a pumping mechanism. The rotating mechanism drives the conveying pipe 3 to rotate. In this embodiment, the conveying pipe 3 is located on the rear side of the moving trolley 1 (i.e., the side opposite to the moving direction of the moving trolley 1). The lifting mechanism is used to adjust the height of the conveying pipe 3. The conveying pipe 3 is used to convey liquid. Extension pipes 4 are connected to both sides of the conveying pipe 3. The length of the extension pipe 4 can be adjusted according to the inner diameter of the steel pipe pile to ensure that steel pipe piles of different diameters can be sprayed. The extension pipe 4 is connected to the paint nozzle 5, which is a high-pressure atomizing nozzle. The pumping mechanism is used to convey the liquid in the paint tank 2 to the conveying pipe 3. The anti-splash assembly includes an airflow delivery mechanism and an air curtain mechanism. The airflow delivery mechanism is used to deliver air to the air curtain mechanism, and the air curtain mechanism is used to form an air curtain on one side of the moving trolley 1, thereby preventing paint from splashing onto the inner wall of the already sprayed steel pipe pile. The cleaning component includes a switching mechanism and a mixing mechanism. During cleaning, the paint tank 2 is filled with cleaning fluid. The switching mechanism is used to connect the air delivery mechanism and the mixing mechanism when cleaning is required. The mixing mechanism is used to atomize the cleaning fluid inside the delivery pipe 3.

[0019] The mobile trolley 1 is equipped with moving wheels 6, which are used to drive the mobile trolley 1 to move. The driving component includes a drive motor 7, which is a servo motor. The drive motor 7 is used to drive the moving wheels 6 on one side of the mobile trolley 1 to rotate. The magnetic attraction component includes a magnetic block 8, which is coaxially connected to the moving wheels 6. In this embodiment, the magnetic block 8 is an electromagnet, and the attraction force can be adjusted by adjusting the magnitude of the current.

[0020] The lifting mechanism includes a hydraulic lifting platform 9, which drives a rotary motor 10 and a rotary gear 11 to lift and lower. A rubber sleeve is provided on the outside of the hydraulic lifting platform 9 to protect it. The hydraulic lifting platform 9 is mounted on the moving trolley 1. The rotating mechanism includes a rotary motor 10 and a rotary gear 11. The rotary motor 10 is mounted on the hydraulic lifting platform 9 and drives the rotary gear 11 to rotate. The rotary motor 10 is a servo motor, which can precisely control its rotation speed and rotation angle. The output end of the rotary motor 10 is connected to the rotary gear 11. A transmission gear is fixedly connected to the conveying pipe 3. The transmission gear meshes with the rotary gear 11.

[0021] The input end of the delivery pipe 3 is connected to a quick connector 12. The quick connector 12 is connected to the quick connector 12 through a retractable pipe. The pumping mechanism includes a piston pump 13. The output end of the piston pump 13 is connected to the delivery pipe 3 through the quick connector 12. The piston pump 13 is used to deliver the liquid in the paint tank 2 to the delivery pipe 3.

[0022] The airflow delivery mechanism includes an air pump 14, an air pipe 15, a slider 16, and an electromagnetic opening valve 17. The air pump 14 is a vane pump that can provide continuous and stable airflow and can quickly form an umbrella-shaped air curtain during use. The air pump 14 is installed in the delivery pipe 3, and the output end of the air pump 14 is connected to the air pipe 15. The air pipe 15 is a flexible hose that can be bent to adapt to adjustment. The air pipe 15 is connected to the electromagnetic opening valve 17, which is connected to the slider 16. During use, the air pump 14 delivers airflow to the air nozzle 20. The air nozzle 20 sprays airflow around and forms an umbrella-shaped air curtain inside the steel pipe pile, thereby preventing paint from splashing onto the already sprayed area during spraying and ensuring the quality of spraying.

[0023] The air curtain mechanism includes a connector 18, a pressure opening valve 19, and an air nozzle 20. One side of the connector 18 is fixedly connected to the delivery pipe 3, and the pressure opening valve 19 and the air nozzle 20 are respectively connected to both sides of the connector 18. The pressure opening valve 19 and the air nozzle 20 are connected to each other through a pipe. When the slider 16 and the connector 18 are docked, the electromagnetic opening valve 17 will press against the pressure opening valve 19 and open it. At this time, the air nozzle 20 and the air pipe 15 are connected to each other.

[0024] The mixing mechanism includes a mixing block 21, a connecting valve 22, and a pressure relief valve 23. The switching mechanism includes a switching push rod 24, a docking opening valve one 25, and a docking opening valve two 26. The mixing block 21 is disposed inside the conveying pipe 3 and is fixedly connected to the inner wall of the conveying pipe 3. The mixing block 21 is provided with a mixing chamber 2101 and an airflow inlet 2102. The mixing chamber 2101 has two outlets, which are respectively connected to the connecting valve 22 and the pressure relief valve 23. The airflow inlet 2102 is connected to the docking opening valve one 25. A slider 16... Connected to the second docking valve 26, the switching push rod 24 is used to drive the slider 16 to move. When the first docking valve 25 and the second docking valve 26 are docked together, the air inlet 2102 and the air pipe 15 are connected to each other. The valve that can be opened by docking is existing technology. The specific model can be purchased according to the actual situation. For the sake of demonstration, the connecting threads of valves such as the connecting valve 22, the pressure relief valve 23, the first docking valve 25 and the second docking valve 26 are not shown in the attached drawings of the instruction manual. This is hereby noted.

[0025] There are two extension pipes 4, which are symmetrically arranged on both sides of the conveying pipe 3.

[0026] Working principle: Before use, the height of the conveying pipe 3 is adjusted by the hydraulic lifting platform 9 according to the height of the pipe pile. Then, the extension pipe 4 is reasonably selected according to the inner diameter of the pipe pile. During spraying, the moving trolley 1 is controlled to move along the axial direction of the steel pipe pile. While moving, the rotary motor 10 drives the delivery pipe 3 to rotate (thereby driving the paint nozzle 5 to move in a circle). At the same time as rotating, the piston pump 13 pumps the paint into the delivery pipe 3. At this time, since it is in the spraying state, the connecting valve 22 is opened, and the paint can directly pass through the mixing chamber 2101 and enter the extension pipe 4, and spray the inner wall of the pipe pile through the paint spraying.

[0027] When in cleaning mode, cleaning fluid is poured into paint tank 2, and connecting valve 22 is closed. Switching push rod 24 is activated, which drives slider 16 to move along the axial direction of delivery pipe 3, causing docking opening valve one 25 and docking opening valve two 26 to dock with each other. When docking opening valve one 25 and docking opening valve two 26 are docked, air inlet 2102 and air pipe 15 are connected to each other. Then, cleaning agent is delivered into delivery pipe 3 through piston pump 13. The cleaning agent and the input air will mix in mixing chamber 2101 and form a large amount of foam. When the pressure in mixing chamber 2101 reaches the set value of pressure relief valve 23, pressure relief valve 23 will open. At this time, the foamed cleaning agent will clean the inner wall of extension pipe 4 and paint nozzle 5.

[0028] 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 spraying device for the inner wall of a large-diameter steel pipe pile, characterized in that, include: A mobile trolley is attached to the inner wall of a steel pipe pile via a magnetic attachment assembly, and the mobile trolley is equipped with a paint tank. A drive assembly for driving the mobile trolley to move along the axial direction of the steel pipe pile; A spraying assembly includes a rotating mechanism, a lifting mechanism, a conveying pipe, an extension pipe, a paint nozzle, and a pumping mechanism. The rotating mechanism drives the conveying pipe to rotate, the lifting mechanism adjusts the height of the conveying pipe, the extension pipe is connected to both sides of the conveying pipe, the extension pipe is connected to the paint nozzle, and the pumping mechanism delivers liquid from the paint tank to the conveying pipe. The anti-splash assembly includes an airflow delivery mechanism and an air curtain mechanism. The airflow delivery mechanism is used to deliver air to the air curtain mechanism, and the air curtain mechanism is used to form an air curtain on one side of the mobile trolley, thereby preventing paint from splashing onto the inner wall of the already sprayed steel pipe pile. The cleaning assembly includes a switching mechanism and a mixing mechanism. During cleaning, the paint tank is filled with cleaning fluid. The switching mechanism is used to connect the airflow delivery mechanism and the mixing mechanism when cleaning is required. The mixing mechanism is used to atomize the cleaning fluid inside the delivery pipe.

2. The spraying equipment for the inner wall of a large-diameter steel pipe pile according to claim 1, characterized in that: The mobile trolley is equipped with wheels, and the drive assembly includes a drive motor, which drives the wheels on one side of the mobile trolley to rotate.

3. The spraying equipment for the inner wall of a large-diameter steel pipe pile according to claim 2, characterized in that: The magnetic suction assembly includes a magnetic block, which is coaxially connected to the movable wheel.

4. The spraying equipment for the inner wall of a large-diameter steel pipe pile according to claim 1, characterized in that: The lifting mechanism includes a hydraulic lifting platform, which is mounted on the mobile trolley. The rotating mechanism includes a rotary motor and a rotary gear, which is mounted on the hydraulic lifting platform. The output end of the rotary motor is connected to the rotary gear. The conveying pipe is fixedly connected to a transmission gear, and the rotary gear and the transmission gear mesh with each other.

5. The spraying equipment for the inner wall of a large-diameter steel pipe pile according to claim 4, characterized in that: The input end of the delivery pipe is connected to a quick connector, and the pumping mechanism includes a piston pump. The output end of the piston pump is connected to the delivery pipe via a quick connector. The piston pump is used to deliver liquid from the paint tank to the delivery pipe.

6. The spraying equipment for the inner wall of a large-diameter steel pipe pile according to claim 4, characterized in that: The airflow delivery mechanism includes an air pump, an air pipe, a slider, and an electromagnetic opening valve. The air pump is installed in the delivery pipe, the output end of the air pump is connected to the air pipe, the air pipe is connected to the electromagnetic opening valve, and the electromagnetic opening valve is connected to the slider.

7. The spraying equipment for the inner wall of a large-diameter steel pipe pile according to claim 6, characterized in that: The air curtain mechanism includes a connector, a pressure opening valve, and an air nozzle. The pressure opening valve and the air nozzle are respectively connected to both sides of the connector. When the slider and the connector are connected to each other, the electromagnetic opening valve will block the pressure opening valve, and at this time the air nozzle and the air pipe are connected to each other.

8. The spraying equipment for the inner wall of a large-diameter steel pipe pile according to claim 7, characterized in that: The mixing mechanism includes a mixing block, a connecting valve, and a pressure relief valve. The switching mechanism includes a switching push rod, a docking opening valve one, and a docking opening valve two. The mixing block is disposed on the delivery pipe. The mixing block has a mixing chamber and an airflow inlet. The mixing chamber has two outlets, which are respectively connected to the connecting valve and the pressure relief valve. When in the spraying state, the connecting valve is open; when in the cleaning state, the connecting valve is closed. The airflow inlet is connected to the docking opening valve one, and the slider is connected to the docking opening valve two. The switching push rod is used to drive the slider to move. When the docking opening valve one and the docking opening valve two are docked together, the airflow inlet and the air pipe are interconnected.

9. The spraying equipment for the inner wall of a large-diameter steel pipe pile according to claim 1, characterized in that: Two extension tubes are provided, and the two extension tubes are symmetrically arranged on both sides of the conveying pipe.

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