Full-automatic inner plastic coating device for steel pipeline

Abstract

The utility model provides a full-automatic internal plastic coating device for a steel pipeline, which relates to the technical field of steel pipe plastic coating and comprises a box body, a rotating component and an expanding component, a conveying pipe is arranged on the box body, the expanding component is arranged at one end, far away from the box body, of the conveying pipe, and the rotating component is arranged at one end, close to the expanding component, of the conveying pipe; the rotating assembly comprises an outer shell and an inner shell, the outer shell is rotationally connected to the end, away from the box, of the conveying pipe, and the inner shell is fixedly connected to the end, close to the outer shell, of the conveying pipe. The expansion assembly comprises a fixed support and a base, the base fixedly communicates with the end, away from the box body, of the conveying pipe, a movable support is arranged on the base, a glue box is fixedly connected to the movable support, and a hose fixedly communicates between the base and the glue box. According to the design, the diameter of the plastic coating device can be adjusted according to different pipe diameters of the steel pipes, the problem that a traditional plastic coating device is difficult to adapt to the steel pipes with different pipe diameters is solved, and the applicability of the plastic coating device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe plastic coating, in particular to a fully automatic inner plastic coating device for steel pipelines. Background Art

[0002] The steel pipe fully automatic internal plastic coating device is a highly efficient and automated equipment used to coat a layer of plastic material on the inner wall of the steel pipe to enhance the corrosion resistance and service life of the steel pipe.

[0003] The existing patent CN218282429U discloses a steel pipe inner surface plastic coating device. (1) A glue discharging device is arranged inside a closed box of the steel pipe inner surface plastic coating device. The setting of the glue discharging device can facilitate the glue discharging device to be pushed into the pipeline to automatically discharge glue.

[0004] The above technical solution is achieved by setting up a glue discharging device. When the glue discharging device enters the interior of the steel pipe, the ball is squeezed by the inner wall of the steel pipe, driving the fixed block to move toward the interior of the closed box and opening the gap on the closed box, so that the paint flows out from the gap and is smeared on the inner wall of the steel pipe, making it convenient for the staff to coat various parts of the pipeline.

[0005] In the above scheme, the sealing box is a fixed structure, which makes it difficult to adjust its own diameter according to the size of the steel pipe diameter during the plastic coating operation, which may lead to the problem that the plastic coating device is difficult to match with steel pipes of different diameters, which is not conducive to improving the versatility of the plastic coating device. Therefore, the utility model provides a fully automatic internal plastic coating device for steel pipelines. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and provide a fully automatic inner plastic coating device for steel pipelines.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fully automatic internal plastic coating device for steel pipes, comprising a box body, a rotating assembly, and an expansion assembly, wherein a delivery pipe is arranged on the box body, the expansion assembly is arranged on an end of the delivery pipe away from the box body, and the rotating assembly is arranged on an end of the delivery pipe close to the expansion assembly;

[0008] The rotating assembly comprises an outer shell and an inner shell, wherein the outer shell is rotatably connected to an end of the conveying pipe away from the box body, and the inner shell is fixedly connected to an end of the conveying pipe close to the outer shell;

[0009] The expansion component includes a fixed bracket and a base, the base is fixedly connected to one end of the conveying pipe away from the box body, a movable bracket is arranged on the base, a rubber box is fixedly connected to the movable bracket, a hose is fixedly connected between the base and the rubber box, the fixed bracket is arranged on a side of the movable bracket away from the rubber box, a connecting block is fixedly connected between the fixed bracket and the inner shell, a hydraulic telescopic rod is fixedly connected to the inner shell, and an output end of the hydraulic telescopic rod is fixedly connected to the base.

[0010] As a preferred embodiment, an electric telescopic rod is fixedly connected between the box body and the outer shell, a motor is fixedly connected to the outer shell, a gear is fixedly connected to the output end of the motor, a rack is fixedly connected to the inner wall of the inner shell on one side close to the gear, and the gear is meshed with the rack.

[0011] The technical effect of adopting the above technical scheme is: starting the motor, so that the gear on the motor drives the inner shell to rotate inside the outer shell through the rack, and the inner shell drives the rubber box to rotate. While the rubber box is rotating, the paint can be sprayed on the inner wall of the steel pipe, which solves the problem of uneven coating on the inner wall of the steel pipe, and is beneficial to improving the corrosion resistance of the steel pipe and extending its service life.

[0012] As a preferred embodiment, a slide groove 1 is provided on one side of the inner shell close to the outer shell, a slider 1 is fixedly connected to one side of the outer shell close to the slide groove 1, and the inner shell is rotatably connected to the outer shell through the slide groove 1 and the slider 1.

[0013] The technical effect of adopting the above technical solution is that the inner shell rotates along the slider through the slide groove, so that the inner shell rotates more stably inside the outer shell, thereby improving the stability of the plastic coating device.

[0014] As a preferred embodiment, the base is a conical structure, a slider 2 is fixedly connected to the side of the base close to the movable bracket, a slide groove 2 is provided on the side of the movable bracket close to the slider 2, and the movable bracket is slidably connected to the base via the slider 2 and the slide groove 2.

[0015] The technical effect of adopting the above technical solution is: controlling the position of the base, adjusting the height of the glue box, and making the coating device adapt to steel pipes of different sizes.

[0016] As a preferred embodiment, the movable bracket is fixedly connected to a limiting block on one side close to the fixed bracket, a limiting groove is provided on one side of the fixed bracket close to the limiting block, and the movable bracket is slidably connected to the fixed bracket via the limiting block and the limiting groove.

[0017] The technical effect of adopting the above technical solution is: ensuring the vertical up and down movement of the movable bracket, avoiding the displacement of the movable bracket, and thus improving the stability of the plastic coating device.

[0018] As a preferred implementation, a nozzle is fixedly connected to the glue box, and a gasket is fixedly connected to one side of the glue box close to the nozzle, and the height of the gasket is greater than the height of the nozzle.

[0019] The technical effect of adopting the above technical solution is: a gap is left between the inner wall of the steel pipe and the nozzle, so that the paint can be sprayed on the inner wall more smoothly, avoiding the nozzle being blocked by the inner wall of the steel pipe.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] 1. By setting up an expansion component and activating the hydraulic telescopic rod, the base can be pushed forward. This action will cause the base to drive the rubber box to move downward and shrink through the mobile bracket, thereby reducing the diameter of the plastic coating device. On the contrary, if the base is pulled backward, the base will move the rubber box upward and expand through the mobile bracket, thereby increasing the diameter of the plastic coating device. This design allows the diameter of the plastic coating device to be adjusted according to the different diameters of the steel pipe, which solves the problem that the traditional plastic coating device is difficult to adapt to steel pipes of different diameters and improves the applicability of the plastic coating device.

[0022] 2. By setting up the rotating component and the expansion component, start the motor, and make the gear drive the inner shell to rotate inside the outer shell through the rack. The rotation of the inner shell will drive the rubber box to rotate, and at the same time, the paint will be sprayed on the inner wall of the steel pipe. This method can solve the problem of uneven coating on the inner wall of the steel pipe, which helps to improve the anti-corrosion performance of the steel pipe and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a fully automatic internal plastic coating device for steel pipes provided by the utility model;

[0024] Figure 2 A side cross-sectional view of a rotating assembly and an expansion assembly in a steel pipe fully automatic internal plastic coating device provided by the utility model;

[0025] Figure 3 This is a structural schematic diagram of a base in a steel pipeline fully automatic internal plastic coating device provided by the utility model;

[0026] Figure 4 The utility model provides a structural schematic diagram of a book glue box in a steel pipeline fully automatic internal plastic coating device.

[0027] Legend:

[0028] 1. Box body; 2. Electric telescopic rod; 3. Delivery pipe;

[0029] 4. Rotating assembly; 41. Outer shell; 42. Inner shell; 43. Motor; 44. Gear; 45. Rack; 46. Slideway 1; 47. Slider 1;

[0030] 5. Extension assembly; 51. Fixed bracket; 52. Base; 53. Mobile bracket; 54. Glue box; 55. Hose; 56. Connecting block; 57. Hydraulic telescopic rod; 58. Slider 2; 59. Slide 2;

[0031] 6. Limit block; 7. Limit groove; 8. Nozzle; 9. Gasket. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1-Figure 4 As shown, this embodiment provides a technical solution: a fully automatic internal plastic coating device for steel pipes, comprising a box body 1, a rotating assembly 4, and an expansion assembly 5. The box body 1 is provided with a delivery pipe 3, the expansion assembly 5 is arranged on the end of the delivery pipe 3 away from the box body 1, and the rotating assembly 4 is arranged on the end of the delivery pipe 3 close to the expansion assembly 5; Figure 2 As shown, the rotating assembly 4 includes an outer shell 41 and an inner shell 42, the outer shell 41 is rotatably connected to the end of the delivery pipe 3 away from the box body 1, and the inner shell 42 is fixedly connected to the end of the delivery pipe 3 close to the outer shell 41; Figure 2 As shown, the expansion component 5 includes a fixed bracket 51 and a base 52, the base 52 is fixedly connected to the end of the conveying pipe 3 away from the box body 1, a mobile bracket 53 is arranged on the base 52, a rubber box 54 is fixedly connected to the mobile bracket 53, a hose 55 is fixedly connected between the base 52 and the rubber box 54, the fixed bracket 51 is arranged on the side of the mobile bracket 53 away from the rubber box 54, a connecting block 56 is fixedly connected between the fixed bracket 51 and the inner shell 42, a hydraulic telescopic rod 57 is fixedly connected to the inner shell 42, and the output end of the hydraulic telescopic rod 57 is fixed to the base 52 The connection is made by starting the hydraulic telescopic rod 57, so that the hydraulic telescopic rod 57 pushes the base 52 to move forward. At this time, the base 52 drives the rubber box 54 to move downward and shrink through the mobile bracket 53, thereby reducing the diameter of the plastic coating device. Conversely, the base 52 is pushed backward, and the base 52 drives the rubber box 54 to move upward and stretch through the mobile bracket 53, thereby increasing the diameter of the plastic coating device. Therefore, the diameter of the plastic coating device can be adjusted according to the diameter of the steel pipe, thereby solving the problem that the plastic coating device is not easy to match with steel pipes of different diameters, thereby improving the versatility of the plastic coating device.

[0034] In the above solution, there is still a gap between the glue boxes 54, which may cause uneven coating. Figure 2 As shown, an electric telescopic rod 2 is fixedly connected between the box body 1 and the outer shell 41, a motor 43 is fixedly connected to the outer shell 41, a gear 44 is fixedly connected to the output end of the motor 43, and a rack 45 is fixedly connected to the inner wall of the inner shell 42 close to the gear 44. The gear 44 is meshed with the rack 45. By starting the electric telescopic rod 2, the rotation component 4 and the expansion component 5 are pushed to move inside the steel pipe, and the conveying pipe 3 is installed on the box body 1, so that the conveying pipe 3 is rotatably connected to the inner side of the box body 1, and the motor 43 is started, so that the gear 44 on the motor 43 drives the inner shell 42 to rotate inside the outer shell 41 through the rack 45, so that the inner shell 42 drives the rubber box 54 to rotate. While the rubber box 54 rotates, the paint can be sprayed on the inner wall of the steel pipe, which solves the problem of uneven coating on the inner wall of the steel pipe, which is beneficial to improving the anti-corrosion performance of the steel pipe and extending the service life.

[0035] Furthermore, Figure 2 As shown, a slide groove 46 is provided on one side of the inner shell 42 close to the outer shell 41, and a slider 47 is fixedly connected to one side of the outer shell 41 close to the slide groove 46. The inner shell 42 is rotatably connected to the outer shell 41 through the slide groove 46 and the slider 47. When the motor 43 is started and the gear 44 drives the inner shell 42 to rotate through the rack 45, the inner shell 42 rotates along the slider 47 through the slide groove 46, so that the inner shell 42 rotates more stably inside the outer shell 41, thereby improving the stability of the plastic coating device.

[0036] Furthermore, Figure 3 As shown, the base 52 is a conical structure, and a slider 58 is fixedly connected to one side of the base 52 close to the movable bracket 53. A slide groove 59 is provided on one side of the movable bracket 53 close to the slider 58. The movable bracket 53 is slidably connected to the base 52 through the slider 58 and the slide groove 59. By pushing the base 52, the movable bracket 53 slides on the base 52 along the slider 58 through the slide groove 59. Since the base 52 is a conical structure, when the base 52 moves, it will drive the movable bracket 53 to move downward, and then the movable bracket 53 will drive the glue box 54 to move downward and shrink. Then, by controlling the position of the base 52, the height of the glue box 54 is adjusted, so that the coating device can adapt to steel pipes of different sizes.

[0037] Furthermore, Figure 4As shown, the movable bracket 53 is fixedly connected to the limiting block 6 on one side close to the fixed bracket 51, and a limiting groove 7 is provided on the side of the fixed bracket 51 close to the limiting block 6. The movable bracket 53 is slidingly connected to the fixed bracket 51 through the limiting block 6 and the limiting groove 7, and the movable bracket 53 is driven to move by the base 52. The movable bracket 53 moves along the limiting groove 7 through the limiting block 6, thereby ensuring the vertical up and down movement of the movable bracket 53, avoiding the displacement of the movable bracket 53, and thereby improving the stability of the plastic coating device.

[0038] In the above solution, there is still a problem that the glue box 54 is too tightly attached to the inner wall of the steel pipe, such as Figure 4 As shown, the glue box 54 is fixedly connected to a nozzle 8, and a gasket 9 is fixedly connected to one side of the glue box 54 close to the nozzle 8. The height of the gasket 9 is greater than the height of the nozzle 8. By adjusting the glue box 54, when the gasket 9 cooperates with the inner wall of the steel pipe, a gap is left between the inner wall of the steel pipe and the nozzle 8, so that the paint can be sprayed on the inner wall more smoothly, avoiding the nozzle 8 being blocked by the inner wall of the steel pipe.

[0039] Working principle: Figure 1-Figure 4 As shown:

[0040] When in use: first start the electric telescopic rod 2, the electric telescopic rod 2 pushes the rotating component 4 and the expansion component 5 to move to the inside of the steel pipe, then start the hydraulic telescopic rod 57, so that the hydraulic telescopic rod 57 pushes the base 52 to move backward, and the movable bracket 53 slides on the base 52 along the slider 2 58 through the slide groove 59, and the limit block 6 moves along the limit groove 7 to move forward, so that the gasket 9 on the glue box 54 fits the inner wall of the steel pipe, and leaves a gap between the nozzle 8 and the inner wall, and then connects the conveying pipe 3 with the feeding system inside the box body 1, so that the paint enters the inside of the base 52 along the conveying pipe 3, and then is sent into the inside of the glue box 54 along the hose 55, and is sprayed on the inner wall of the steel pipe from the inside of the nozzle 8, then starts the motor 43, and the gear 44 on the motor 43 drives the inner shell 42 to rotate through the rack 45, so that the inner shell 42 rotates along the slider 1 47 through the slide groove 1 46, and drives the glue box 54 to rotate through the inner shell 42, so that the paint sprayed from the nozzle 8 is evenly sprayed on the pipe wall.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A fully automatic internal plastic coating device for steel pipes, comprising a housing (1), a rotating assembly (4), and an expansion assembly (5), characterized in that: The box body (1) is provided with a delivery pipe (3), the expansion component (5) is arranged on an end of the delivery pipe (3) away from the box body (1), and the rotating component (4) is arranged on an end of the delivery pipe (3) close to the expansion component (5); The rotating assembly (4) comprises an outer shell (41) and an inner shell (42); the outer shell (41) is rotatably connected to an end of the conveying pipe (3) away from the box body (1); and the inner shell (42) is fixedly connected to an end of the conveying pipe (3) close to the outer shell (41); The expansion assembly (5) comprises a fixed bracket (51) and a base (52); the base (52) is fixedly connected to an end of the conveying pipe (3) away from the box body (1); a movable bracket (53) is arranged on the base (52); a rubber box (54) is fixedly connected to the movable bracket (53); a hose (55) is fixedly connected between the base (52) and the rubber box (54); the fixed bracket (51) is arranged on a side of the movable bracket (53) away from the rubber box (54); a connecting block (56) is fixedly connected between the fixed bracket (51) and the inner shell (42); a hydraulic telescopic rod (57) is fixedly connected to the inner shell (42); an output end of the hydraulic telescopic rod (57) is fixedly connected to the base (52).

2. The fully automatic internal plastic coating device for steel pipes according to claim 1 is characterized in that: An electric telescopic rod (2) is fixedly connected between the box body (1) and the outer shell (41); a motor (43) is fixedly connected to the outer shell (41); a gear (44) is fixedly connected to the output end of the motor (43); a rack (45) is fixedly connected to the inner wall of the inner shell (42) on one side close to the gear (44); and the gear (44) is meshed with the rack (45).

3. The fully automatic internal plastic coating device for steel pipes according to claim 1 is characterized in that: A slide groove (46) is provided on one side of the inner shell (42) close to the outer shell (41); a slider (47) is fixedly connected to one side of the outer shell (41) close to the slide groove (46); the inner shell (42) is rotatably connected to the outer shell (41) via the slide groove (46) and the slider (47).

4. The fully automatic internal plastic coating device for steel pipes according to claim 3 is characterized by: The base (52) is a conical structure. A second slide block (58) is fixedly connected to a side of the base (52) close to the movable bracket (53). A second slide groove (59) is provided on a side of the movable bracket (53) close to the second slide block (58). The movable bracket (53) is slidably connected to the base (52) via the second slide block (58) and the second slide groove (59).

5. The fully automatic internal plastic coating device for steel pipes according to claim 3 is characterized by: The movable bracket (53) is fixedly connected to a limiting block (6) on one side close to the fixed bracket (51); a limiting slot (7) is provided on one side of the fixed bracket (51) close to the limiting block (6); and the movable bracket (53) is slidably connected to the fixed bracket (51) via the limiting block (6) and the limiting slot (7).

6. The fully automatic internal plastic coating device for steel pipes according to claim 3 is characterized by: The glue box (54) is fixedly connected to a nozzle (8), and a gasket (9) is fixedly connected to one side of the glue box (54) close to the nozzle (8), wherein the height of the gasket (9) is greater than the height of the nozzle (8).

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