A smart spraying device and method for rust prevention of marine pipelines

Abstract

This invention discloses an intelligent spraying device and method for rust prevention of marine pipelines, belonging to the field of spraying technology. It includes: a fixed frame; a spraying mechanism; and a deflecting plate. One end of the deflecting plate is rotatably connected to a contact roller that contacts the pipeline and can rotate. Both ends of the contact roller are synchronously equipped with a main gear and a driven gear meshing with the main gear. An air exchange cylinder mounted on the deflecting plate, driven by the driven gear, can generate dust blowing and absorb excess oil mist. The rotation of the driven gear drives the eccentric connecting column to move. When the connecting column approaches the air exchange cylinder, it pushes the piston inward, thus putting the entire air exchange cylinder in a venting state. The gas in the venting state can act on the pipeline to blow dust from its surface. When the connecting column moves away from the air exchange cylinder, it pulls the piston outward, putting the entire air exchange cylinder in a suction state. The suction state can act on the spraying process, absorbing excess oil mist generated during spraying and preventing it from polluting the working environment.

Description

Technical Field

[0001] This invention relates to the field of spraying technology, specifically to an intelligent spraying device and method for rust prevention of marine pipelines. Background Technology

[0002] Pipelines are widely used in various fields. During the manufacturing process, pipelines require spraying treatment. Spraying is particularly important for some marine pipelines because the marine environment is quite special, with potential salt spray and humidity, and high requirements for rust prevention.

[0003] The published patent (publication number: CN117259079B) discloses a spraying device for marine anti-corrosion paint. By combining the spraying mechanism, the suction mechanism and the walking mechanism, the device can perform spraying operations on the pipeline while walking. During the spraying process, the suction mechanism can absorb the paint material generated during the spraying process, thus avoiding material splashing and pollution of the working environment.

[0004] However, during the spraying process, the above-mentioned device can only operate above the pipe. If it is necessary to spray the lower part of the pipe, the pipe may need to be flipped over to achieve the spraying effect of the entire pipe.

[0005] To address this problem, a spraying device and its spraying method are proposed. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent spraying device and method for rust prevention of marine pipelines, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A marine pipeline rust prevention intelligent spraying device includes:

[0009] Fixture;

[0010] Spraying equipment;

[0011] A deflector plate is rotatably connected at one end to a contact roller that contacts the pipe and can rotate. Both ends of the contact roller are equipped with a main gear and a driven gear that meshes with the main gear. The air exchange cylinder installed on the deflector plate can blow away dust and absorb excess oil mist under the drive of the driven gear.

[0012] As a further embodiment of the present invention: the spraying mechanism includes a fixing ring, which is fixedly mounted on a fixing frame via a connecting frame, and the fixing ring is provided with circumferentially distributed nozzles, the output end of each nozzle being distributed inward to spray the pipeline, and the other end being connected to a material box via a connecting pipe.

[0013] As a further embodiment of the present invention: the fixed frame is further provided with a support mechanism, the support mechanism includes a mounting groove formed on the fixed frame, a rotating shaft is fixedly connected inside the mounting groove, and the deflection plate is rotatably connected to the rotating shaft.

[0014] As a further embodiment of the present invention: the fixing frame has a through opening, and the spraying mechanism is located behind the support mechanism along the direction of pipe movement. The pipe, which is positioned by the four support mechanisms, will move forward at a position close to the center line of the through opening.

[0015] As a further embodiment of the present invention: an auxiliary mechanism is provided on the deflection plate, the air exchange cylinder is fixedly installed on the side of the deflection plate by a support frame, a piston is slidably arranged inside the air exchange cylinder, and a connecting column is fixedly installed at the eccentric position of the driven gear, and the piston is connected to the connecting column by a connecting rod.

[0016] As a further aspect of the present invention: the surface of the contact roller is made of rubber, and the rubber material increases the friction between the contact roller and the pipe surface during the extrusion process.

[0017] As a further embodiment of the present invention: wherein, when the air exchange cylinder is in the venting state, the air exchange cylinder is connected to hose one; when in the suction state, the air exchange cylinder is connected to hose two, hose two is connected to the adsorption device, and the adsorption device is provided with an adsorption port near the spraying mechanism. When the air exchange cylinder is in the suction state, it will generate negative pressure on the adsorption device, so that the adsorption device can adsorb and recover the material through the adsorption port.

[0018] As a further embodiment of the present invention: wherein the first hose is connected to the air outlet provided on the contact roller, and when the air exchanger releases air, the air can be applied to the surface of the pipe through the first hose via the air outlet to clean the dust on the surface of the pipe.

[0019] As a further embodiment of the present invention, the ratio of the gear radii of the main gear and the driven gear is 1:1 or 1:2.

[0020] A smart spraying method for rust prevention of marine pipelines, characterized by comprising the following steps:

[0021] S100. The pipe is passed through the fixed frame by the traction mechanism. The surface of the pipe will contact the contact roller, and the movement of the pipe will drive the contact roller to rotate.

[0022] S101. The rotation of the contact roller will drive the main gear to rotate, and the rotation of the main gear will engage with the driven gear to rotate; further, it will drive the connecting column at the eccentric position to move. When the connecting column is close to the air exchange cylinder, it will push the piston to move inward, and the entire air exchange cylinder will be in the air release state; when the connecting column is far away from the air exchange cylinder, it will pull the piston to move outward, and the entire air exchange cylinder will be in the air intake state.

[0023] S102. Simultaneously start the spraying mechanism, which sprays the material in the material box onto the pipeline through the atomizing nozzle.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. In the spraying device of this embodiment, when the pipe enters the through-hole, the surface of the pipe will contact the contact roller, and under the elastic force of the return disc spring, the contact roller will press against the surface of the pipe; and there are four contact rollers, which are distributed on the four sides of the through-hole, and play a role in clamping and limiting the pipe.

[0026] 2. In this embodiment, the spraying device, through the rotation of the gear, drives the eccentric connecting column to move. When the connecting column approaches the air exchange cylinder, it pushes the piston inward, thus putting the entire air exchange cylinder into a venting state. In this venting state, the gas can act on the pipe, blowing dust off the pipe surface. When the connecting column moves away from the air exchange cylinder, it pulls the piston outward, putting the entire air exchange cylinder into a suction state. The suction state can act on the spraying process, absorbing excess oil mist generated during spraying and preventing it from polluting the working environment.

[0027] 3. The spraying method in this embodiment can improve the efficiency of surface spraying of marine pipelines and has the effect of adsorbing excess oil mist. During spraying, the dust on the pipeline surface and the surrounding environment can be blown away by the air blowing action, so as to avoid the dust falling on the pipeline surface from affecting the spraying work and thus destroying the spraying effect. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 For the present invention Figure 1 A schematic diagram of the front structure in the middle;

[0030] Figure 3 For the present invention Figure 1 A schematic diagram of the back structure;

[0031] Figure 4 This is a schematic diagram showing the connection between the support mechanism and the auxiliary mechanism in this invention;

[0032] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0033] Figure 6 This is a schematic diagram of the structure in this invention.

[0034] The correspondence between the labels and component names in the attached figures is as follows:

[0035] 10. Base plate; 11. Fixing frame; 12. Through-hole; 20. Spraying mechanism; 21. Fixing ring; 22. Connecting frame; 23. Nozzle; 30. Support mechanism; 31. Mounting groove; 32. Rotating shaft; 33. Deflection plate; 34. Return disc spring; 35. Contact roller; 40. Auxiliary mechanism; 41. Main gear; 42. Driven gear; 43. Air exchanger; 44. Support frame; 45. Connecting column; 46. Connecting rod; 47. Hose 1; 48. Hose 2; 49. Air outlet; 50. Adsorption device. Detailed Implementation

[0036] Please see Figure 1 This is a schematic diagram of the overall structure of the pipe spraying device. The device includes a base plate 10, and a fixing frame 11 is fixedly installed on the top of the base plate 10. The fixing frame 11 has a through opening 12. The pipe passes through the through opening 12 and passes through the fixing frame 11 by a traction mechanism. The surface of the pipe is sprayed by a spraying mechanism 20 set on the fixing frame 11.

[0037] like Figure 2 and Figure 3 As shown, the spraying mechanism 20 includes a fixing ring 21, which is fixedly mounted on the fixing frame 11 via a connecting frame 22. The fixing ring 21 is provided with circumferentially distributed nozzles 23. The output end of each nozzle 23 is distributed inwards to spray the pipeline, and the other end is connected to the material box via a connecting pipe. Each nozzle 23 is evenly distributed on the fixing ring 21.

[0038] To ensure the pipe can be smoothly dragged by the traction mechanism during the spraying process, a support mechanism 30 is also provided inside the fixed frame 11. The support mechanism 30 includes a mounting groove 31 formed on the fixed frame 11. A rotating shaft 32 is fixedly connected inside the mounting groove 31. A deflection plate 33 is rotatably connected to the rotating shaft 32. A return spring 34 is fixedly installed between the deflection plate 33 and the rotating shaft 32. A contact roller 35 is rotatably connected to the end face of the deflection plate 33 near the pipe. In this embodiment, when the pipe enters the through-hole 12, the surface of the pipe will contact the contact roller 35, and under the elastic force of the return spring 34, the contact roller 35 will be pressed against the surface of the pipe. There are four contact rollers 35, which are distributed on the four sides of the through-hole 12, respectively, to clamp and limit the pipe.

[0039] Along the direction of pipe movement, the spraying mechanism 20 is located behind the support mechanism 30. The pipe, which is positioned by the four support mechanisms 30, will move forward at a position close to the center line of the through-hole 12, so that the distance between the nozzle and the pipe surface is the same (or the deviation is small), ensuring uniform spraying of different positions on the pipe surface.

[0040] For marine pipes, to ensure the effectiveness of the coating, the pipes need to be thoroughly cleaned before coating to remove dirt accumulated during storage and transportation. However, this cleaning does not guarantee that the pipe surface is free of dust before coating. To address this issue, the following improvements are proposed.

[0041] like Figure 4 and Figure 5 As shown, an auxiliary mechanism 40 is provided on the deflection plate 33. The auxiliary mechanism 40 includes a main gear 41 rotatably connected to the deflection plate 33 and rotating synchronously with the contact roller 35. A driven gear 42 is meshed with one side of the main gear 41. The driven gear 42 is connected to the deflection plate 33 through a fixing plate. In this embodiment, the rotation of the contact roller 35 will drive the main gear 41 to rotate, and the rotation of the main gear 41 will mesh with and drive the driven gear 42 to rotate. Symmetrically distributed air exchange cylinders 43 are also provided on the side of the deflection plate 33. The air exchange cylinders 43 are fixedly installed on the side of the deflection plate 33 through a support frame 44. A piston is slidably arranged inside the air exchange cylinder 43, and a connecting column 45 is fixedly installed at the eccentric position of the driven gear 42. The piston is connected to the connecting column 45 through a connecting rod 46. In this embodiment, the rotation of the gear 42 will drive the connecting column 45 at the eccentric position to move. When the connecting column 45 is close to the air exchange cylinder 43, it will push the piston to move inward, and the entire air exchange cylinder 43 will be in a venting state. When the connecting column 45 is away from the air exchange cylinder 43, it will pull the piston to move outward, and the entire air exchange cylinder 43 will be in a suction state.

[0042] Furthermore, in the venting state, the released gas can act on the surface of the pipe to blow away the dust on the surface, thereby ensuring that the surface of the pipe is clean during spraying; in the suction state, the suction port can be brought close to the spraying mechanism 20 to adsorb the splashed material generated during the spraying process, preventing the material from flying into the working environment and causing pollution.

[0043] Furthermore, the surface of the contact roller 35 is made of rubber. During the extrusion process, the rubber material can increase the friction between the contact roller 35 and the pipe surface, so that the contact roller 35 can rotate when the pipe is pulled.

[0044] like Figure 6 As shown, to better achieve this process, when the air exchanger 43 is in the venting state, it is connected to hose 47; when in the suction state, it is connected to hose 48, which is connected to the adsorption device 50. The adsorption device 50 has an adsorption port near the spraying mechanism 20. When the air exchanger 43 is in the suction state, it generates a negative pressure on the adsorption device 50, allowing the adsorption device 50 to adsorb and recover the material through the adsorption port, while the material can be filtered within the adsorption device 50. Hose 47 is connected to the air outlet 49 on the contact roller 35. When the air exchanger 43 vents, the gas can be directed through hose 47 through the air outlet 49 to the pipe surface, cleaning the dust on the pipe surface. Example 1

[0045] When the ratio of the main gear 41 to the driven gear 42 is 1:2, as shown in the figure, the number of rotations of the main gear 41 and the driven gear 42 is the same. At this time, the main gear 41 rotates one revolution, and the driven gear 42 rotates half a revolution. Specifically, the gears are marked in four directions: a and c along the direction of the air exchanger 43, with a being the furthest point from the air exchanger 43 and b being the closest. Then, c and d are marked sequentially in a counter-clockwise direction. When the main gear 41 drives the driven gear 42 from a to c, the air exchanger 43 is in a venting state; conversely, when it rotates from c to a, it is in a suction state. Therefore, in the venting state (i.e., from a to c, the driven gear 42 completes half a revolution), the main gear 41 has already rotated one revolution, so the air outlet 49 on the contact roller 35 also rotates one revolution. Thus, the released gas acts as the contact roller 35 rotates one revolution. When the air outlet 49 faces backward, it may interfere with the material spraying, causing uneven material spraying. Example 2

[0046] When the ratio of the main gear 41 to the driven gear 42 is 1:1, everything else is the same as in Embodiment 1. At this time, in the air release state (i.e., from a to c, the driven gear 42 completes half a rotation), and the main gear 41 also completes half a rotation. Assuming that the air outlet 49 is set in the a direction of the contact roller 35, the air outlet 49 will blow air in a half-rotation trajectory (i.e., from a to c). At this time, the air outlet can blow the dust away from the pipe better. Compared with single air blowing, the direction of single air blowing is fixed. After blowing the dust, the dust will be scattered in the surrounding environment and may fall back onto the pipe surface. However, the improvement in this application can blow air in a certain trajectory, which can not only blow the dust on the pipe, but also blow away the air that has been blown up and is floating in the surrounding environment, preventing the dust from falling back onto the pipe surface.

[0047] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A marine pipeline rust-prevention intelligent spraying device, characterized in that, include: Fixture; Spraying equipment; A deflector plate has a contact roller rotatably connected to one end of it, which contacts the pipe and rotates. A main gear and a driven gear meshing with the main gear are synchronously mounted on both ends of the contact roller. An air exchanger mounted on the deflector plate, driven by the driven gear, blows away dust and absorbs excess oil mist. A support mechanism is also provided inside the fixed frame. This mechanism includes a mounting slot on the fixed frame, with a rotating shaft fixedly connected inside the mounting slot. The deflector plate is rotatably connected to the rotating shaft. An auxiliary mechanism is also provided on the deflector plate. The air exchanger is fixedly mounted on the side of the deflector plate via the support frame. A piston slides inside the air exchanger, and a connecting column is fixedly mounted at the eccentric position of the driven gear. The piston is connected to the connecting column via a connecting rod. When the air exchanger is in the venting state, it is connected to hose one; when it is in the suction state, it is connected to hose two, which is connected to the adsorption device. The adsorption device is equipped with an adsorption port near the spraying mechanism. When the air exchanger is in the suction state, it will generate negative pressure on the adsorption device, so that the adsorption device can adsorb and recover the material through the adsorption port.

2. The intelligent spraying device for rust prevention of marine pipelines according to claim 1, characterized in that, The spraying mechanism includes a fixing ring, which is fixedly mounted on a fixing frame via a connecting frame. The fixing ring is provided with circumferentially distributed nozzles. The output end of each nozzle is distributed inward to spray the pipeline, and the other end is connected to the material box via a connecting pipe.

3. The intelligent spraying device for rust prevention of marine pipelines according to claim 1, characterized in that, The fixed frame has a through opening. Along the direction of pipe movement, the spraying mechanism is located behind the support mechanism. The pipe, which is positioned by the four support mechanisms, will move forward at a position close to the center line of the through opening.

4. The intelligent spraying device for rust prevention of marine pipelines according to claim 1, characterized in that, The surface of the contact roller is made of rubber, which increases the friction between the contact roller and the pipe surface during the extrusion process.

5. The intelligent spraying device for rust prevention of marine pipelines according to claim 4, characterized in that, The first hose is connected to the air outlet on the contact roller. When the air exchanger releases air, the air can be applied to the pipe surface through the air outlet via the first hose to clean the dust on the pipe surface.

6. The intelligent spraying device for rust prevention of marine pipelines according to claim 1, characterized in that, The ratio of the gear radii of the primary gear and the driven gear is 1:1 or 1:

2.

7. A spraying method, employing the spraying apparatus as described in any one of claims 1-6, characterized in that, Includes the following steps: S100. The pipe is passed through the fixed frame by the traction mechanism. The surface of the pipe will contact the contact roller, and the movement of the pipe will drive the contact roller to rotate. S101. The rotation of the contact roller will drive the main gear to rotate. The rotation of the main gear will engage with the driven gear to rotate. This will further drive the connecting column at the eccentric position to move. When the connecting column is close to the air exchange cylinder, it will push the piston to move inward, and the entire air exchange cylinder will be in a venting state. When the connecting column is away from the air exchange cylinder, it will pull the piston to move outward, and the entire air exchange cylinder will be in a suction state. S102. Simultaneously start the spraying mechanism, which sprays the material in the material box onto the pipeline through the atomizing nozzle.

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