Uniformly sprayable anticorrosive spray device for spiral steel pipe

Abstract

The utility model relates to spiral steel pipe anticorrosion technical field especially uniform anticorrosion spraying device of spiral steel pipe of spraying, including support frame, still including annular mounting bracket and infrared drying lamp, support frame front side swing joint has the liquid storage tank, the liquid storage tank front side fixed connection has the support pipeline, support pipeline both sides install high pressure atomizing nozzle, and high pressure atomizing nozzle embeds the pump machine, and support pipeline outside installs annular mounting bracket, and annular mounting bracket installs infrared drying lamp on, the utility model discloses install the annular mounting bracket according to the spiral pipeline inner wall customization in support frame front, and install annular mounting bracket in annular mounting bracket and arrange the infrared drying lamp of annular arrangement full annular mounting bracket, and high pressure atomizing nozzle moves and sprays, and the infrared drying lamp located in the front will move to the spraying area, and infrared drying lamp produces a large amount of heat, and the moisture in anticorrosion spraying evaporates fast, makes it dry fast, avoids its because gravity reason drop or slide, and guarantees the uniformity of coating.

Description

Technical Field

[0001] This utility model belongs to the field of spiral steel pipe anti-corrosion technology, specifically relating to a spiral steel pipe anti-corrosion spraying device that can uniformly spray coating. Background Technology

[0002] Spiral steel pipes, due to their high strength and load-bearing capacity, good toughness and seismic performance, and superior corrosion resistance, are often used as transportation pipelines in the oil and gas industry, water supply and drainage projects, agricultural irrigation, and municipal engineering. They can also serve as an important component of steel structures, providing stable support for large buildings such as high-rises, bridges, and stadiums. When used as transportation pipelines, to extend their service life and improve their corrosion resistance, thus ensuring the safe and stable operation of the pipeline system, anti-corrosion coatings are often applied to the inner wall of the spiral steel pipe.

[0003] Currently, during the spraying of anti-corrosion coatings on the inner wall of spiral steel pipes, the coating cannot be guaranteed to dry quickly after application. The anti-corrosion coating containing moisture that has not completely dried is easily dropped from the top of the inner wall to the bottom due to gravity, resulting in inconsistent coating thickness on the inner wall of the spiral steel pipe, reduced local protective performance, and further reduced service life of the spiral steel pipe.

[0004] Therefore, in response to the problems mentioned above, such as the inability of existing spraying methods to quickly dry the anti-corrosion coating and the uneven coating thickness on the inner wall of the spiral steel pipe due to the downward slippage of the anti-corrosion coating caused by gravity, a spiral steel pipe anti-corrosion spraying device that can uniformly spray coating can be designed. Utility Model Content

[0005] To overcome the problem that existing spraying methods cannot quickly dry the anti-corrosion coating, and that the anti-corrosion coating slides down due to gravity, resulting in inconsistent coating thickness on the inner wall of the spiral steel pipe.

[0006] The technical solution of this utility model is as follows: a spiral steel pipe anti-corrosion spraying device capable of uniform spraying, including a support frame; it also includes an annular mounting frame and an infrared drying lamp. A liquid storage tank is movably connected to the front side of the support frame, and a support pipe communicating with the liquid storage tank is fixedly connected to the front side of the liquid storage tank. High-pressure atomizing nozzles are installed on both sides of the support pipe. The high-pressure atomizing nozzles have built-in pumps. The support pipe communicates with the high-pressure atomizing nozzles. An annular mounting frame is installed on the outside of the support pipe. The annular mounting frame is located on the front side of the high-pressure atomizing nozzles, and an infrared drying lamp is installed on the annular mounting frame.

[0007] Preferably, the support frame drives the liquid storage tank and high-pressure atomizing nozzle to move along the spiral steel pipe. The high-pressure atomizing nozzle pressurizes the anti-corrosion coating and sprays it out, so that it adheres to the inner wall of the spiral steel pipe. The annular mounting frame fixes the infrared drying lamp in front of the high-pressure atomizing nozzle. When the high-pressure atomizing nozzle moves along the spiral steel pipe, the infrared drying lamp uses its own high heat to quickly evaporate the moisture in the anti-corrosion coating in the sprayed area, so as to achieve rapid drying.

[0008] Preferably, a door is movably connected to the top of the liquid storage tank, and a rotating shaft is fixedly connected to the rear side of the liquid storage tank, with the rotating shaft rotatably connected inside the support frame.

[0009] Preferably, a No. 1 motor is installed on the rear side of the support frame. The output end of the No. 1 motor is fixedly connected to the rotating shaft. The No. 1 motor is used to drive the high-pressure atomizing nozzle to rotate.

[0010] Preferably, two opposing pull ropes are fixedly connected to the rear side of the support frame, and three telescopic rods arranged in a ring are fixedly connected to the outer side of the support frame. Telescopic columns are movably connected inside the telescopic rods, and rollers are installed at the top of the telescopic columns.

[0011] Preferably, the telescopic rod is provided with a threaded rod, and a limit post is fixedly connected inside the telescopic rod. The bottom end of the telescopic post is provided with a threaded hole that matches the threaded rod, and the telescopic post is sleeved on the outside of the limit post.

[0012] Preferably, a limiting groove is provided on one side of the telescopic rod, and a limiting slider is movably connected in the limiting groove. The limiting slider is fixedly connected to the outside of the telescopic column.

[0013] Preferably, a second door is movably connected to the side of the telescopic rod near the threaded rod, and a second motor is installed inside the telescopic rod. The output end of the second motor is fixedly connected to the threaded rod, and the second motor is used to drive the threaded rod to rotate.

[0014] The beneficial effects of this utility model are:

[0015] 1. By installing a ring-shaped mounting frame customized according to the inner wall of the spiral pipe in front of the support frame, and installing infrared drying lamps arranged in a ring to fill the ring mounting frame, the high-pressure atomizing nozzle sprays the anti-corrosion coating onto the inner wall of the spiral pipe and then moves backward while spraying. The infrared drying lamp located in front will move to the spraying area. The infrared drying lamp generates a lot of heat, which quickly evaporates the moisture in the anti-corrosion spray, making it dry quickly and preventing it from falling or slipping due to gravity, thus ensuring the uniformity of the coating.

[0016] 2. The three telescopic columns are synchronously extended and retracted through an electrical control system such as a PLC. The length is adjusted according to the inner diameter of the spiral steel pipe, so that the rollers are close to the pipe and the spray head is fixed in the center of the pipe by the triangular support to avoid skewing. At the same time, the rollers can drive the support frame to move along the pipe to achieve spraying of the entire inner wall of the pipe. Attached Figure Description

[0017] Figure 1 The diagram shown is an isometric three-dimensional structural schematic of the spraying device of this utility model.

[0018] Figure 2 The diagram shown is an isometric three-dimensional structural schematic of the liquid storage tank and high-pressure atomizing nozzle of this utility model.

[0019] Figure 3 The diagram shown is an isometric three-dimensional structural schematic of the annular mounting frame and infrared drying lamp of this utility model.

[0020] Figure 4 The diagram shown is an equiaxial three-dimensional structural schematic of the support frame of this utility model;

[0021] Figure 5 The diagram shown is a three-dimensional structural diagram of the support frame above this utility model.

[0022] Figure 6 The diagram shown is a three-dimensional structural diagram of the lower part of the telescopic column of this utility model.

[0023] Explanation of reference numerals in the attached diagram: 1. Support frame; 2. Circular mounting frame; 3. Infrared drying lamp; 4. Liquid storage tank; 5. Support pipe; 6. High-pressure atomizing nozzle; 7. Door No. 1; 8. Rotating shaft; 9. Motor No. 1; 10. Pull rope; 11. Telescopic rod; 12. Telescopic column; 13. Roller; 14. Threaded rod; 15. Limiting column; 16. Limiting groove; 17. Limiting slider; 18. Door No. 2; 19. Motor No. 2. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please see Figures 1-6This utility model provides an embodiment of a spiral steel pipe anti-corrosion spraying device capable of uniform spraying, including a support frame 1; it also includes an annular mounting frame 2 and an infrared drying lamp 3. A liquid storage tank 4 is movably connected to the front side of the support frame 1, and a support pipe 5 communicating with the liquid storage tank 4 is fixedly connected to the front side of the liquid storage tank 4. High-pressure atomizing nozzles 6 are installed on both sides of the support pipe 5, and the high-pressure atomizing nozzles 6 have built-in pumps. The support pipe 5 communicates with the high-pressure atomizing nozzles 6, and an annular mounting frame 2 is installed on the outside of the support pipe 5. The annular mounting frame 2 is located in front of the high-pressure atomizing nozzles 6, and an infrared drying lamp 3 is installed on the annular mounting frame 2. The support frame 1 drives the liquid storage tank 4 and the high-pressure atomizing nozzles 6 to move along the spiral steel pipe. The high-pressure atomizing nozzles 6 pressurize and spray the anti-corrosion coating, causing it to adhere to the inner wall of the spiral steel pipe. The mounting bracket 2 fixes the infrared drying lamp 3 in front of the high-pressure atomizing nozzle 6. When the high-pressure atomizing nozzle 6 moves along the spiral steel pipe, the infrared drying lamp 3 uses its own high heat to quickly evaporate the moisture in the anti-corrosion coating in the sprayed area, achieving rapid drying. The top of the liquid storage tank 4 is movably connected to a door 7. The rear side of the liquid storage tank 4 is fixedly connected to a rotating shaft 8, which is rotatably connected to the inside of the support frame 1. By opening the door 7, the prepared anti-corrosion coating can be poured into the liquid storage tank 4. A motor 9 is installed on the rear side of the support frame 1. The output end of the motor 9 is fixedly connected to the rotating shaft 8. The motor 9 is used to drive the high-pressure atomizing nozzle 6 to rotate. The motor 9 provides power for the rotation of the rotating shaft 8. The rotating shaft 8 drives the liquid storage tank 4 and the high-pressure nozzle to rotate, spraying the inside of the spiral steel pipe.

[0026] Please see Figures 3-4In this embodiment, two opposing pull ropes 10 are fixedly connected to the rear side of the support frame 1. Three telescopic rods 11 arranged in a ring are fixedly connected to the outer side of the support frame 1. Telescopic columns 12 are movably connected inside the telescopic rods 11. Rollers 13 are installed at the top of the telescopic columns 12. The rollers 13 are in close contact with the inner wall of the spiral steel pipe. The triangular support formed by the three telescopic columns 12 positions the support pipe 5 at the center of the spiral steel pipe. The rollers 13 allow the support frame 1 to move along the inner wall of the spiral steel pipe. The telescopic columns 12 can extend and retract within the telescopic rods 11, thereby changing their length according to the inner wall of the spiral steel pipe, so that the rollers 13 can be in close contact with the inner wall of the spiral steel pipe. A threaded rod 14 is provided inside the telescopic rod 11. A limiting post 15 is fixedly connected inside the telescopic rod 11. A threaded hole matching the threaded rod 14 is opened at the bottom end of the telescopic column 12. The telescopic column 12 is sleeved on the outside of the limiting post 15. After the threaded rod 14 rotates, it is restricted by the limiting post 15. The telescopic column 12, screwed onto the outside of the threaded rod 14, cannot rotate with the threaded rod 14, but moves within the telescopic rod 11. A limiting groove 16 is provided on one side of the telescopic rod 11, and a limiting slider 17 is movably connected within the limiting groove 16. The limiting slider 17 is fixedly connected to the outside of the telescopic column 12. The limiting groove 16 and the limiting slider 17 can limit the range of movement of the telescopic column 12, preventing the telescopic column 12 from completely moving out of the telescopic rod 11. A second door 18 is movably connected to the side of the telescopic rod 11 near the threaded rod 14. A second motor 19 is installed inside the telescopic rod 11, and the output end of the second motor 19 is fixedly connected to the threaded rod 14. The second motor 19 is used to drive the threaded rod 14 to rotate, providing power for the rotation of the threaded rod 14, thereby changing the position of the telescopic column 12 within the telescopic rod 11. The design of the second door 18 facilitates the user's maintenance of the second motor 19 inside the telescopic rod 11.

[0027] During the spraying process, the workers first select the appropriate mounting bracket according to the inner diameter of the spiral steel pipe and install it on the support pipe 5. They then open the first door 7, pour the prepared anti-corrosion coating into the storage tank 4, and then place the support bracket 1 into the spiral steel pipe. The three No. 2 motors 19 are then started synchronously through the PLC and other electrical control systems. The No. 2 motors 19 drive the threaded rod 14 to rotate. Under the restriction of the limit post 15, the limit slide groove 16, and the limit slider 17, the telescopic post 12 screwed to the outside of the threaded rod 14 cannot rotate with the threaded rod 14, but moves along the limit post 15, extending the telescopic post 12 until the pulley is close to the inner wall of the spiral steel pipe, pushing the support bracket 1. The roller 13 drives the support bracket 1 to move along the spiral steel pipe until the high-pressure atomizing nozzle 6 moves to the front end of the spiral steel pipe.

[0028] Start motor 9, which drives shaft 8 to rotate via high-pressure atomizing nozzle 6. Then, start the pump inside high-pressure atomizing nozzle 6 and turn on infrared drying lamp 3. The worker holds the pull rope 10 and pulls the support frame 1 backward. During the backward movement, the high-pressure atomizing nozzle 6, which rotates at high speed, sprays the inner wall of the spiral steel pipe. At the same time, due to the movement, the infrared drying lamp 3 will use the high heat generated by itself to remove the moisture in the anti-corrosion coating in the sprayed area, achieving rapid drying and preventing it from sliding down due to gravity.

[0029] Through the above steps, a ring-shaped mounting frame 2, customized according to the inner wall of the spiral pipe, is installed in front of the support frame 1. Infrared drying lamps 3, arranged in a ring and covering the ring-shaped mounting frame 2, are installed inside the ring-shaped mounting frame 2. After the high-pressure atomizing nozzle 6 sprays the anti-corrosion coating onto the inner wall of the spiral pipe, it moves backward while spraying. The infrared drying lamp 3 located in front will move to the spraying area. The infrared drying lamp 3 generates a large amount of heat, which quickly evaporates the moisture in the anti-corrosion spray, making it dry quickly and preventing it from falling or slipping due to gravity. This ensures the uniformity of the coating and solves the problem that the existing spraying work cannot dry the anti-corrosion coating quickly, and the anti-corrosion coating slips down due to gravity, resulting in inconsistent coating thickness on the inner wall of the spiral steel pipe.

Claims

1. A spiral steel pipe anti-corrosion spraying device capable of uniform spraying, comprising a support frame (1); characterized in that: It also includes a ring mounting bracket (2) and an infrared drying lamp (3). A liquid storage tank (4) is movably connected to the front side of the support bracket (1). A support pipe (5) communicating with the liquid storage tank (4) is fixedly connected to the front side of the liquid storage tank (4). High-pressure atomizing nozzles (6) are installed on both sides of the support pipe (5). The high-pressure atomizing nozzles (6) have a built-in pump. The support pipe (5) is connected to the high-pressure atomizing nozzles (6). A ring mounting bracket (2) is installed on the outside of the support pipe (5). The ring mounting bracket (2) is located on the front side of the high-pressure atomizing nozzles (6). An infrared drying lamp (3) is installed on the ring mounting bracket (2).

2. The spiral steel pipe anti-corrosion spraying device capable of uniform spraying according to claim 1, characterized in that: A door (7) is movably connected to the top of the liquid storage tank (4), and a rotating shaft (8) is fixedly connected to the rear side of the liquid storage tank (4). The rotating shaft (8) is rotatably connected to the inside of the support frame (1).

3. The spiral steel pipe anti-corrosion spraying device capable of uniform spraying according to claim 2, characterized in that: A No. 1 motor (9) is installed on the rear side of the support frame (1). The output end of the No. 1 motor (9) is fixedly connected to the rotating shaft (8). The No. 1 motor (9) is used to drive the high-pressure atomizing nozzle (6) to rotate.

4. The spiral steel pipe anti-corrosion spraying device capable of uniform spraying according to claim 1, characterized in that: Two pull ropes (10) are fixedly connected to the rear side of the support frame (1). Three telescopic rods (11) arranged in a ring are fixedly connected to the outside of the support frame (1). A telescopic column (12) is movably connected inside the telescopic rod (11). A roller (13) is installed at the top of the telescopic column (12).

5. The spiral steel pipe anti-corrosion spraying device capable of uniform spraying according to claim 4, characterized in that: The telescopic rod (11) is provided with a threaded rod (14), and a limit post (15) is fixedly connected inside the telescopic rod (11). The bottom end of the telescopic post (12) is provided with a threaded hole that matches the threaded rod (14), and the telescopic post (12) is sleeved on the outside of the limit post (15).

6. The spiral steel pipe anti-corrosion spraying device capable of uniform spraying according to claim 5, characterized in that: A limiting groove (16) is provided on one side of the telescopic rod (11), and a limiting slider (17) is movably connected in the limiting groove (16). The limiting slider (17) is fixedly connected to the outside of the telescopic column (12).

7. The spiral steel pipe anti-corrosion spraying device capable of uniform spraying according to claim 6, characterized in that: The telescopic rod (11) is movably connected to the second door (18) on the side near the threaded rod (14). The second motor (19) is installed inside the telescopic rod (11). The output end of the second motor (19) is fixedly connected to the threaded rod (14). The second motor (19) is used to drive the threaded rod (14) to rotate.

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