Pipe diameter self-adaptive pipeline interior spraying repair device

Abstract

The invention discloses a pipe diameter self-adaptive pipeline interior spraying repairing device, and relates to the technical field of pipeline maintenance and repairing, the pipe diameter self-adaptive pipeline interior spraying repairing device comprises a mounting cylinder, a cleaning unit, a reducing unit and a repairing unit, the mounting cylinder is used for mounting and fixing the cleaning unit, the reducing unit and the repairing unit, and the cleaning unit is used for removing dirt and impurities attached to the inner wall of a pipeline; the diameter changing unit is used for detecting the inner diameter of the pipeline, the repairing unit is used for conducting spraying repairing on the inner wall of the pipeline, when a worker conveys the installation cylinder into the pipeline, dirt attached to the inner wall is removed through the cleaning unit, and after the diameter changing unit detects the size of the current pipe diameter, the repairing unit conducts spraying repairing on the inner wall of the pipeline. The inner walls of the pipelines with different pipe diameters are correspondingly adjusted, sprayed and repaired through the repairing unit, the phenomena of too thick spraying or spraying leakage and sagging of the pipelines are avoided, and therefore the repairing quality of the inner walls of the pipelines is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline maintenance and repair, and in particular to a pipeline internal spray repair device with self-adaptive pipe diameter. Background Art

[0002] During long-term pipeline use, dirt gradually accumulates on the inner wall of the pipeline due to precipitation and corrosion of the conveying medium and the intrusion of external impurities. This can reduce the inner diameter of the pipeline, reduce conveying efficiency, and even cause safety hazards such as pipeline blockage and leakage. Traditional pipeline maintenance and repair methods typically rely on manual cleaning and fixed-parameter spray repair equipment. Manual cleaning is not only labor-intensive and inefficient, but also poses significant safety risks to personnel operating in narrow and dangerous pipeline environments. Fixed-parameter spray repair equipment cannot adapt to changes in the inner diameter of the pipeline, resulting in uneven spraying and poor repair results, which cannot meet the needs of actual projects.

[0003] Most existing pipe cleaning equipment uses fixed-size scrapers or brushes. When dealing with pipes with varying diameters, these devices are unable to automatically adjust the angle and position of the scraper or brush to accommodate changes in diameter. This results in poor cleaning performance on large pipes, leaving a significant amount of residual dirt. On smaller pipes, the scraper or brush may collide with the pipe wall, damaging the equipment and the pipe.

[0004] Traditional dirt removal equipment usually adopts a single fixed-angle cleaning method and cannot adjust working parameters according to changes in pipe diameter. Dead corners are easily found during the cleaning process, resulting in low cleaning efficiency.

[0005] During the pipeline spray repair process, spray speed significantly impacts the quality and thickness of the coating. Existing spray equipment typically uses a fixed spray speed and cannot automatically adjust to changes in the pipe's inner diameter. The spray angle is also fixed and cannot be adjusted in real time to accommodate changes in the pipe's inner diameter. The direction and magnitude of the spray pressure are crucial to the coating's atomization and coverage. Existing spray equipment has a limited control over the spray pressure direction, making it inflexible to accommodate changes in the pipe's inner diameter. Summary of the Invention

[0006] The purpose of the present invention is to provide a pipe diameter adaptive internal spray repair device to solve the problems raised in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The pipe diameter adaptive internal spray repair device includes a mounting cylinder, a cleaning unit, a reducing unit and a repair unit. The mounting cylinder is placed on a horizontal basis. The cleaning unit is fixedly connected to the mounting cylinder. The cleaning unit is fixedly connected to the mounting cylinder. The reducing unit is fixedly connected to the mounting cylinder. The reducing unit is fixedly connected to the repair unit. The reducing unit has the function of adaptively adjusting the pipe diameter. The repair unit is fixedly connected to the mounting cylinder. A swivel is provided on the mounting cylinder.

[0009] The installation cylinder is used to install and fix the cleaning unit, the reducing unit and the repair unit. The cleaning unit is used to remove dirt and impurities attached to the inner wall of the pipe. The reducing unit is used to detect the inner diameter of the pipe. The repair unit is used to spray and repair the inner wall of the pipe. When the staff transports the installation cylinder into the pipe, the cleaning unit first removes the dirt attached to the inner wall. After detecting the current pipe diameter through the reducing unit, the repair unit adjusts the spraying and repair of the inner wall of the pipe with different pipe diameters accordingly to avoid the phenomenon of excessive spraying, leakage, and sagging, thereby improving the quality of the pipe inner wall repair.

[0010] Furthermore, the cleaning unit includes a drive motor, a rotating shaft, a spring telescopic plate and a scraper. The fixed end of the drive motor is fixedly mounted on the mounting tube, the output end of the drive motor is fixedly connected to the rotating shaft, the fixed end of the spring telescopic plate is fixedly mounted on the rotating shaft, the spring telescopic plate is rotatably connected to the scraper, and the fixed end of the spring telescopic plate is fixedly connected to the rotating ring of the mounting tube.

[0011] Furthermore, the cleaning unit also includes a roller, a roller, a retaining ring, a connecting rod and a pull rope. The roller abuts against the telescopic end surface of the spring telescopic plate, the roller is fixedly connected to the roller, the roller is fixedly connected to the retaining ring, the retaining ring is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the fixed end of the spring telescopic plate. One end of the pull rope is evenly wound on the retaining ring, and the other end is fixedly connected to the scraper.

[0012] When the staff extends the installation tube into the pipe, the scraper squeezed by the inner wall of the pipe compresses the spring telescopic plate, so that the scraper adapts to the current inner diameter of the pipe. At this time, the controller controls the drive motor to start, thereby driving the rotating shaft to rotate, so that the spring telescopic plate drives the scraper to rotate, and the dirt and impurities attached to the inner wall of the pipe are scraped and cleaned. When the inner diameter of the pipe changes from large to small, the scraper squeezed by the inner wall of the pipe drives the telescopic part of the spring telescopic plate to move downward, driving the roller and the roller to rotate, thereby driving the baffle to rotate around the connecting rod. The pull rope is contracted during the rotation of the left baffle ring, and the pull rope is loosened by the rotation of the right baffle ring, so that the scraper is deflected to a large angle, so that the side of the scraper is close to the inner wall of the pipe, avoiding collision between the scraper and the pipe wall, while increasing the shear force of the scraper on the dirt on the pipe wall, making it easier to peel off the dirt from the pipe wall, improving the cleaning effect, and ensuring that the subsequent spray repair effect is not affected.

[0013] Furthermore, the variable diameter unit includes a pulley, a fixed block, a support rod, a slider and a telescopic spring. The pulley is rotatably installed on the fixed block, one end of the support rod is rotatably connected to the fixed block, and the other end of the support rod is rotatably connected to the slider. The slider is slidably installed in the fixed box, and one end of the telescopic spring is fixedly connected to the slider.

[0014] Furthermore, the variable diameter unit also includes a fixed box, a sliding rod, a disc, a movable plate and a guide column. The other end of the telescopic spring is fixedly connected to the fixed box, one end of the sliding rod passes through the fixed box and is fixedly connected to the slider close to the disc, the other end of the sliding rod is fixedly connected to the disc, the disc is fixedly connected to the movable plate, the movable plate is slidably installed on the guide column, the guide column is fixedly connected to the inner wall of the mounting cylinder, and the movable plate is fixedly connected to the repair unit.

[0015] When the installation cylinder moves in the pipeline, the pulley rolls on the inner wall. When the inner diameter of the pipeline changes, if the inner diameter of the pipeline changes from large to small, the pulley is subjected to the pressure of the inner wall of the pipeline, thereby driving the fixed block to push the support rod to move to both sides, driving the slider to squeeze the telescopic spring to move to both sides in the fixed box, thereby completing the adaptive change to adapt to the inner diameter of the current pipeline and adapting to the changes of different pipelines. When the slider moves to both sides, the slide rod is pushed to drive the disc to push the moving plate to move on the guide column. At this time, the rotating motor drives the driving magnetic turntable close to the driven magnetic turntable.

[0016] Furthermore, the repair unit includes a rotating motor, a driving magnetic turntable, a driven magnetic turntable, a spray barrel, a nozzle and a long rod. The fixed end of the rotating motor is fixedly mounted on a movable plate, the telescopic end of the rotating motor is fixedly connected to the driving magnetic turntable, the driven magnetic turntable is fixedly connected to the spray barrel, the nozzle is connected to the spray barrel through a torsion spring, the spray barrel is fixedly connected to the long rod, an electric push plate is provided in the spray barrel, a heating wire is provided in the spray barrel, the nozzle is made of copper, and the nozzle is electrically connected to the heating wire.

[0017] Furthermore, the repair unit also includes an inner swivel, an outer swivel, a lifting ear, a sliding column, a gravity block, a magnet group, a bent rod and a steel rope. The inner swivel is fixedly connected to the long rod, the inner swivel is fixedly mounted on the outer swivel, the inner swivel is provided with a lifting ear, the outer swivel is rotatably mounted on the end face of the mounting tube, one end of the sliding column is fixedly connected to the outer surface of the inner swivel, the other end of the sliding column is fixedly connected to the inner surface of the outer swivel, the gravity block is slidably mounted on the sliding column, the gravity block is made of iron, the gravity block is electrically connected to the electric push plate in the spray barrel, the magnet group is fixedly connected to the outer surface of the mounting tube through the bent rod, one end of the steel rope is fixedly connected to the end of the nozzle, and the other end passes through the lifting ear and is fixedly connected to the gravity block.

[0018] The controller controls the starting of the rotating motor, when the pipe inner diameter becomes smaller, the distance between the driving magnetic turntable and the driven magnetic turntable becomes smaller, the air gap between the two becomes smaller, and the slip becomes smaller, so that the rotating speed of the driven magnetic turntable becomes faster, the rotating speed of the driven magnetic turntable is synchronized to become faster under the transmission of the long rod, the synchronous rotating speed of the inner rotating ring and the outer rotating ring becomes faster, the gravity block moves outward along the slide column under the action of the large centrifugal force, on the one hand, the angle between the nozzle and the spray bucket is increased by the steel rope, the increase of the nozzle angle can make the distribution of the spraying material on the inner wall of the pipe more uniform, the spraying material can be sprayed on the inner wall of the pipe in a wider fan-shaped range, and the problems of local coating being too thick or too thin are avoided, so that the uniformity of the coating thickness is ensured, the nozzle cuts the magnetic induction lines generated by the two groups of magnets during rotation, and the angle of the nozzle is increased at this time, the cut magnetic induction lines are increased, so that the current generated is increased, the heating wire in the spray bucket is supplied with current, the spraying material is melted, the flowability of the spraying material is increased, the caking of the spraying material in a low-temperature environment is avoided, and the spraying effect is affected, on the other hand, the distance of the gravity block moving outward is increased, the effective number of turns of the driving coil is increased at this time, the resistance is increased, and the current of the controller is supplied to the electric push plate in the spray bucket, so that the spraying pressure of the nozzle on the inner wall of the small pipe is reduced, and the local coating is prevented from being too thick, so as to affect the repair effect.

[0019] Further, the slide column is uniformly wound with an induction coil, and the induction coil on the slide column is close to one end of the inner rotating ring and is an electric current input end.

[0020] In order to increase the distance of the gravity block moving outward when encountering a pipe with a small diameter, so that the current supplied to the electric push plate in the spray bucket is reduced, the spraying pressure of the spraying material is reduced, the local coating is prevented from being too thick, and the repair effect is affected.

[0021] In order to make the current generated by the nozzle cutting the magnetic induction lines during rotation be used for starting the heating wire, heat the spraying material in the spray bucket, improve the flowability, avoid caking of the spraying material at low temperature, and prevent the nozzle from spraying the spraying material or the phenomenon of broken spraying from occurring, which affects the spraying effect.

[0022] Further, the mounting cylinder is provided with a controller, and the mounting cylinder is provided with a plug-in interface.

[0023] In order to facilitate the staff to control the start and stop of the cleaning unit and the repair unit, the plug-in interface is convenient for the staff to clamp the mounting cylinder, and the conveying device enters the inside of the pipe.

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

[0025] 1. The present invention compresses the spring telescopic plate by squeezing the scraper on the inner wall of the pipe, so that the scraper adapts to the current inner diameter of the pipe. At this time, the controller controls the drive motor to start, thereby driving the rotating shaft to rotate, so that the spring telescopic plate drives the scraper to rotate, and the dirt and impurities attached to the inner wall of the pipe are scraped and cleaned. When the inner diameter of the pipe changes from large to small, the scraper squeezed by the inner wall of the pipe drives the telescopic part of the spring telescopic plate to move downward, driving the roller and the roller to rotate, thereby driving the baffle ring to rotate around the connecting rod. The pull rope is contracted during the rotation of the left baffle ring, and the pull rope is loosened by the rotation of the right baffle ring, so that the scraper is deflected to a large angle, so that the side of the scraper is close to the inner wall of the pipe, avoiding the collision between the scraper and the pipe wall, and increasing the shear force of the scraper on the dirt on the pipe wall, thereby making it easier to peel off the dirt from the pipe wall, improving the cleaning effect, and ensuring that the subsequent spray repair effect is not affected.

[0026] 2. The present invention achieves this by causing the pulley to roll inside the inner wall during the movement of the installation cylinder inside the pipeline. When the inner diameter of the pipeline changes, if the inner diameter of the pipeline changes from large to small, the pulley is subjected to pressure from the inner wall of the pipeline, thereby driving the fixed block to push the support rod to move to both sides, driving the slider to squeeze the telescopic spring to move to both sides in the fixed box, thereby completing the adaptive change to adapt to the current inner diameter of the pipeline and adapting to the changes in different pipelines. When the slider moves to both sides, the slide rod is pushed to drive the disc to push the movable plate to move on the guide column. At this time, the rotating motor drives the driving magnetic turntable to approach the driven magnetic turntable.

[0027] 3. The present invention controls the start-up of the rotating motor through a controller. When the inner diameter of the pipeline changes from large to small, the distance between the driving magnetic turntable and the driven magnetic turntable becomes smaller, the air gap between the two becomes smaller, and the slip becomes smaller, so that the rotation speed of the driven magnetic turntable becomes faster, and the driven magnetic turntable drives the rotation speed of the spray barrel to become faster synchronously. Under the transmission action of the long rod, the inner rotating ring and the outer rotating ring are driven to rotate faster synchronously. At this time, the gravity block moves outward along the sliding column under the action of the large centrifugal force. The distance increases. On the one hand, the angle between the nozzle and the spray barrel is increased by pulling the steel rope. Increasing the nozzle angle can make the distribution of the spray material on the inner wall of the pipeline more uniform, and the spray material can be sprayed onto the inner wall of the pipeline in a wider fan-shaped range, avoiding The problem of local coating being too thick or too thin is solved, thereby ensuring the uniformity of coating thickness. The nozzle cuts the magnetic flux lines generated by the two sets of magnet groups during rotation. Since the angle of the nozzle becomes larger at this time, the magnetic flux lines cut become more, and the current generated becomes larger, which is transmitted to the heating wire in the spray barrel to melt the spray material, increase the fluidity of the spray material, and avoid it from agglomerating in a low temperature environment, affecting the spraying effect. On the other hand, the outward movement distance of the gravity block increases, and the effective number of turns of the drive coil increases, and the resistance increases. The current of the controller is transmitted to the electric push plate in the spray barrel through the drive coil and the gravity block, reducing the spraying pressure of the nozzle on the inner wall of the small diameter pipe, avoiding the situation of local coating being too thick, affecting the repair effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall appearance and structure of a pipe diameter adaptive internal spray repair device of the present invention;

[0029] Figure 2 This is a schematic diagram of the appearance and structure of a repair unit of a pipe diameter adaptive internal spray repair device of the present invention;

[0030] Figure 3 The invention provides a pipe diameter adaptive internal spray repair device for pipes Figure 2 A schematic diagram of the structure of the partial enlarged view at center A;

[0031] Figure 4 This is a schematic diagram of the appearance and structure of a portion of the cleaning unit of a pipe diameter adaptive internal spray repair device of the present invention;

[0032] Figure 5 This is a schematic diagram of the internal structure of the installation cylinder of a pipe diameter adaptive internal spray repair device of the present invention;

[0033] Figure 6 This is a schematic diagram of the overall appearance and structure of a cleaning unit of a pipe diameter adaptive internal spray repair device of the present invention;

[0034] Figure 7 The invention provides a pipe diameter adaptive internal spray repair device for pipes Figure 6 The structural diagram of the partial enlarged view at B in the middle;

[0035] Figure 8 This is a schematic diagram of the installation position structure of the repair unit of a pipe diameter adaptive internal spray repair device of the present invention.

[0036] In the figure: 1. Mounting cylinder; 2. Cleaning unit; 21. Driving motor; 22. Rotating shaft; 23. Spring telescopic plate; 24. Scraper; 25. Roller; 26. Roller; 27. Retaining ring; 28. Connecting rod; 29. ​​Pull rope; 3. Variable diameter unit; 31. Pulley; 32. Fixed block; 33. Support rod; 34. Slider; 35. Telescopic spring; 36. Fixed box; 37. Sliding rod; 38. Disc; 39. Moving plate; 310. Guide column; 4. Repair unit; 41. Rotating motor; 42. Driving magnetic turntable; 43. Driven magnetic turntable; 44. Spray barrel; 45. Nozzle; 46. Long rod; 47. Inner swivel; 48. Outer swivel; 49. Lifting ear; 410. Sliding column; 411. Gravity block; 412. Magnet group; 413. Bending rod; 414. Steel rope. DETAILED DESCRIPTION

[0037] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0038] Embodiment: As shown in the drawings, Figures 1-8 the present application provides a technical solution:

[0039] As shown in the drawings, Figure 1 , Figure 2 a pipe diameter self-adaptive pipeline internal spraying repair device, comprising a mounting cylinder 1, a cleaning unit 2, a variable diameter unit 3 and a repair unit 4, the mounting cylinder 1 is placed on a horizontal base, the cleaning unit 2 is fixedly connected with the mounting cylinder 1, the cleaning unit 2 is fixedly connected with the mounting cylinder 1, the variable diameter unit 3 is fixedly connected with the mounting cylinder 1, the variable diameter unit 3 is fixedly connected with the repair unit 4, the variable diameter unit 3 has the function of self-adaptive adjustment of pipe diameter, the repair unit 4 is fixedly connected with the mounting cylinder 1, and the mounting cylinder 1 is provided with a swivel.

[0040] The mounting cylinder 1 is used for mounting and fixing the cleaning unit 2, the variable diameter unit 3 and the repair unit 4, the cleaning unit 2 is used for removing the dirt attached to the inner wall of the pipeline, the variable diameter unit 3 is used for detecting the inner diameter of the pipeline, and the repair unit 4 is used for spraying repair to the inner wall of the pipeline. When the staff transports the mounting cylinder 1 into the pipeline, the dirt attached to the inner wall is removed by the cleaning unit 2 first, the size of the current pipe diameter is detected by the variable diameter unit 3, and the inner wall of the pipeline with different pipe diameters is adjusted and sprayed accordingly by the repair unit 4, so as to avoid the phenomenon of over-thick spraying or missing spraying and sagging, thereby improving the repair quality of the inner wall of the pipeline.

[0041] As shown in the drawings, Figure 2 , Figure 4 , Figure 6 the cleaning unit 2 comprises a driving motor 21, a rotating shaft 22, a spring telescopic plate 23 and a scraper 24, the fixed end of the driving motor 21 is fixedly installed on the mounting cylinder 1, the output end of the driving motor 21 is fixedly connected with the rotating shaft 22, the fixed end of the spring telescopic plate 23 is fixedly installed on the rotating shaft 22, the spring telescopic plate 23 is rotatably connected with the scraper 24, and the fixed end of the spring telescopic plate 23 is fixedly connected with the swivel of the mounting cylinder 1.

[0042] As shown in the drawings, Figure 6 , Figure 7As shown, the cleaning unit 2 also includes a roller 25, a roller 26, a retaining ring 27, a connecting rod 28 and a pull rope 29. The roller 25 abuts against the telescopic end surface of the spring telescopic plate 23, the roller 25 is fixedly connected to the roller 26, the roller 26 is fixedly connected to the retaining ring 27, the retaining ring 27 is fixedly connected to one end of the connecting rod 28, and the other end of the connecting rod 28 is fixedly connected to the fixed end of the spring telescopic plate 23. One end of the pull rope 29 is evenly wrapped around the retaining ring 27, and the other end is fixedly connected to the scraper 24.

[0043] When the worker extends the installation tube 1 into the pipe, the pipe inner wall squeezing scraper 24 compresses the spring telescopic plate 23, so that the scraper 24 adapts to the current pipe inner diameter. At this time, the controller controls the drive motor 21 to start, thereby driving the rotating shaft 22 to rotate, so that the spring telescopic plate 23 drives the scraper 24 to rotate, and the dirt and impurities attached to the inner wall of the pipe are scraped and cleaned. When the inner diameter of the pipe changes from large to small, the pipe inner wall squeezing scraper 24 drives the spring telescopic plate 23 to move downward, driving the roller 25 and the roller 26 to rotate, thereby driving the retaining ring 27 to rotate around the connecting rod 28. During the rotation of the left retaining ring 27, the pull rope 29 is contracted, and the rotation of the right retaining ring 27 relaxes the pull rope 29, thereby deflecting the scraper 24 to a large angle, so that the side of the scraper 24 is close to the inner wall of the pipe, avoiding the scraper 24 from colliding with the pipe wall, and increasing the shear force of the scraper 24 on the dirt on the pipe wall, thereby making it easier to peel off the dirt from the pipe wall, improving the cleaning effect, and ensuring that the subsequent spray repair effect is not affected.

[0044] like Figure 3 As shown, the variable diameter unit 3 includes a pulley 31, a fixed block 32, a support rod 33, a slider 34 and a telescopic spring 35. The pulley 31 is rotatably installed on the fixed block 32, one end of the support rod 33 is rotatably connected to the fixed block 32, and the other end of the support rod 33 is rotatably connected to the slider 34. The slider 34 is slidably installed in the fixed box 36, and one end of the telescopic spring 35 is fixedly connected to the slider 34.

[0045] like Figure 3 、 Figure 5 As shown, the variable diameter unit 3 also includes a fixed box 36, a sliding rod 37, a disc 38, a movable plate 39 and a guide column 310. The other end of the telescopic spring 35 is fixedly connected to the fixed box 36. One end of the sliding rod 37 passes through the fixed box 36 and is fixedly connected to the slider 34 on the side close to the disc 38. The other end of the sliding rod 37 is fixedly connected to the disc 38. The disc 38 is fixedly connected to the movable plate 39. The movable plate 39 is slidably installed on the guide column 310. The guide column 310 is fixedly connected to the inner wall of the mounting tube 1. The movable plate 39 is fixedly connected to the repair unit 4.

[0046] During the installation cylinder 1 travels in the pipeline, the pulley 31 rolls in the inner wall, when the inner diameter of the pipeline changes, if the inner diameter of the pipeline decreases, the pulley 31 is pressed by the inner wall of the pipeline, thereby driving the fixed block 32 to push the support rod 33 to move to both sides, driving the sliding block 34 to extrude the extension spring 35 to move to both sides in the fixed box 36, thereby completing the self-adaptive change to adapt to the current pipeline inner diameter, and adapting to the change of different pipelines. The change of the blocked travel, the sliding block 34 pushes the sliding rod 37 to drive the disc 38 to push the moving plate 39 to move on the guide column 310, at this time the rotating motor 41 drives the driving magnetic disc 42 to approach the driven magnetic disc 43.

[0047] As shown in Figure 5 , Figure 8 , the repair unit 4 includes a rotating motor 41, a driving magnetic disc 42, a driven magnetic disc 43, a spray bucket 44, a nozzle 45 and a long rod 46, the fixed end of the rotating motor 41 is fixedly installed on the moving plate 39, the telescopic end of the rotating motor 41 is fixedly connected with the driving magnetic disc 42, the driven magnetic disc 43 is fixedly connected with the spray bucket 44, the nozzle 45 is connected with the spray bucket 44 through a torsional spring, the spray bucket 44 is fixedly connected with the long rod 46, the spray bucket 44 is provided with an electric push plate, the spray bucket 44 is provided with a heating wire, the nozzle 45 is made of copper, and the nozzle 45 is electrically connected with the heating wire.

[0048] As shown in Figure 8 , the repair unit 4 further includes an inner rotating ring 47, an outer rotating ring 48, a lifting lug 49, a sliding column 410, a gravity block 411, a magnet group 412, a bent rod 413 and a steel wire 414, the inner rotating ring 47 is fixedly connected with the long rod 46, the inner rotating ring 47 is fixedly installed on the outer rotating ring 48, the inner rotating ring 47 is provided with the lifting lug 49, the outer rotating ring 48 is rotatably installed on the end face of the installation cylinder 1, one end of the sliding column 410 is fixedly connected with the outer surface of the inner rotating ring 47, the other end of the sliding column 410 is fixedly connected with the inner surface of the outer rotating ring 48, the gravity block 411 is slidably installed on the sliding column 410, the gravity block 411 is made of iron, the gravity block 411 is electrically connected with the electric push plate in the spray bucket 44, the magnet group 412 is fixedly connected with the outer surface of the installation cylinder 1 through the bent rod 413, one end of the steel wire 414 is fixedly connected with the end of the nozzle 45, and the other end passes through the lifting lug 49 and is fixedly connected with the gravity block 411.

[0049] The controller controls the rotating motor 41 to start. When the inner diameter of the pipeline changes from large to small, the distance between the driving magnetic turntable 42 and the driven magnetic turntable 43 becomes smaller, the air gap between the two becomes smaller, and the slip becomes smaller, so that the speed of the driven magnetic turntable 43 becomes faster, and the driven magnetic turntable 43 drives the rotation speed of the spray barrel 44 to become faster synchronously. Under the transmission action of the long rod 46, the inner rotating ring 47 and the outer rotating ring 48 are driven to rotate synchronously and faster. At this time, the gravity block 411 moves outward along the sliding column 410 to increase the distance under the action of the large centrifugal force. On the one hand, the angle between the nozzle 45 and the spray barrel 44 is increased by pulling the steel rope 414. Increasing the angle of the nozzle 45 can make the distribution of the spray material on the inner wall of the pipeline more uniform, and the spray material can be sprayed onto the inner wall of the pipeline in a wider fan-shaped range. , avoiding the problem of local coating being too thick or too thin, thereby ensuring the uniformity of coating thickness. The nozzle 45 cuts the magnetic flux lines generated by the two sets of magnet groups 412 during the rotation process. Since the angle of the nozzle 45 becomes larger at this time, the magnetic flux lines cut become more, thereby generating a larger current, which is delivered to the heating wire in the spray barrel 44 to melt the spray material, increase the fluidity of the spray material, and avoid it from agglomerating in a low temperature environment, affecting the spraying effect. On the other hand, the outward movement distance of the gravity block 411 increases. At this time, the effective number of turns of the drive coil increases, and the resistance increases. The current of the controller is delivered to the electric push plate in the spray barrel 44 through the drive coil and the gravity block 411, reducing the spraying pressure of the nozzle 45 on the inner wall of the small diameter pipe, avoiding the situation where the local coating is too thick, affecting the repair effect.

[0050] like Figure 8 As shown, an induction coil is evenly wound on the sliding post 410 , and the end of the induction coil on the sliding post 410 close to the inner rotating ring 47 is a current input end.

[0051] In order to increase the outward movement distance of the gravity block 411 when repairing a small-diameter pipeline, the current delivered to the electric push plate in the spray barrel 44 is reduced, thereby reducing the spraying pressure of the spray material and avoiding the situation where the local coating is too thick, affecting the repair effect.

[0052] like Figure 8 As shown, there are two magnet groups 412 , which are placed in parallel. The two magnet groups 412 have opposite polarities on the sides close to each other.

[0053] In order to enable the nozzle 45 to cut the magnetic flux lines during rotation to generate current for starting the heating wire, the spray material in the spray barrel 44 is heated to improve fluidity, avoid agglomeration of the spray material at low temperatures, and prevent the nozzle 45 from being unable to spray the spray material, or the occurrence of interrupted spraying resulting in spray leakage on the inner wall of the pipe, thereby affecting the spraying effect.

[0054] like Figure 1 As shown, a controller is provided on the mounting tube 1, and a plug interface is provided on the mounting tube 1.

[0055] In order to facilitate the staff to control the start and stop of the cleaning unit 2 and the repair unit 4, the plug interface is convenient for the staff to use it to clamp the installation cylinder 1 and the conveying device to enter the interior of the pipeline.

[0056] Working principle of the present invention:

[0057] When the worker extends the installation tube 1 into the pipe, the pipe inner wall squeezing scraper 24 compresses the spring telescopic plate 23, so that the scraper 24 adapts to the current pipe inner diameter. At this time, the controller controls the drive motor 21 to start, thereby driving the rotating shaft 22 to rotate, so that the spring telescopic plate 23 drives the scraper 24 to rotate, and the dirt and impurities attached to the inner wall of the pipe are scraped and cleaned. When the inner diameter of the pipe changes from large to small, the pipe inner wall squeezing scraper 24 drives the spring telescopic plate 23 to move downward, driving the roller 25 and the roller 26 to rotate, thereby driving the retaining ring 27 to rotate around the connecting rod 28. During the rotation of the left retaining ring 27, the pull rope 29 is contracted, and the rotation of the right retaining ring 27 relaxes the pull rope 29, thereby deflecting the scraper 24 to a large angle, so that the side of the scraper 24 is close to the inner wall of the pipe, avoiding the scraper 24 from colliding with the pipe wall, and increasing the shear force of the scraper 24 on the dirt on the pipe wall, thereby making it easier to peel off the dirt from the pipe wall, improving the cleaning effect, and ensuring that the subsequent spray repair effect is not affected.

[0058] During the movement of the installation cylinder 1 in the pipeline, the pulley 31 rolls inside the inner wall. When the inner diameter of the pipeline changes, if the inner diameter of the pipeline changes from large to small, the pulley 31 is subjected to the pressure of the inner wall of the pipeline, thereby driving the fixed block 32 to push the support rod 33 to move to both sides, driving the slider 34 to squeeze the telescopic spring 35 to move to both sides in the fixed box 36, thereby completing the adaptive change to adapt to the current inner diameter of the pipeline and adapting to the changes in different pipelines. When the slider 34 moves to both sides, it pushes the slide bar 37 to drive the disc 38 to push the moving plate 39 to move on the guide column 310. At this time, the rotating motor 41 drives the driving magnetic turntable 42 to approach the driven magnetic turntable 43.

[0059] The controller controls the rotating motor 41 to start, when the pipe inner diameter becomes smaller, the distance between the driving magnetic turntable 42 and the driven magnetic turntable 43 becomes smaller, the air gap between the two becomes smaller, so the slip becomes smaller, so that the rotating speed of the driven magnetic turntable 43 becomes faster, the driven magnetic turntable 43 drives the rotating speed of the spray bucket 44 to be synchronized to become faster, under the transmission effect of the long rod 46, the inner rotating ring 47 and the outer rotating ring 48 are driven to have the synchronized rotating speed become faster, at this time, the gravity block 411 moves outward along the slide column 410 under the action of the large centrifugal force, on the one hand, the angle between the nozzle 45 and the spray bucket 44 is increased by the steel wire 414, increasing the angle of the nozzle 45 can make the distribution of the spraying material on the inner wall of the pipe more uniform, the spraying material can be sprayed on the inner wall of the pipe in a wider fan-shaped range, avoiding the problem of local coating being too thick or too thin, so as to ensure the uniformity of the coating thickness, the nozzle 45 cuts the magnetic induction lines generated by the two groups of magnets 412 in the rotating process, since the angle of the nozzle 45 is increased at this time, the cut magnetic induction lines are increased, so that the generated current is increased, the heating wire in the spray bucket 44 is supplied with current, the spraying material is melted, the fluidity of the spraying material is increased, the caking of the spraying material in the low temperature environment is avoided, the spraying effect is affected, on the other hand, the gravity block 411 moves outward, at this time, the effective number of turns of the driving coil is increased, the resistance is increased, the current of the controller is transmitted to the electric push plate in the spray bucket 44 through the driving coil and the gravity block 411, the spraying pressure of the nozzle 45 on the inner wall of the small pipe is reduced, the local coating is avoided to be too thick, and the repair effect is affected.

[0060] It will be apparent to those skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but that the application can be implemented in other specific forms without departing from the spirit or essential characteristics of the application. Thus, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims.

Claims

1. A pipe diameter adaptive internal spray repair device, characterized by: The invention relates to a pipe diameter self-adaptive internal spray repair device, comprising a mounting cylinder (1), a cleaning unit (2), a diameter-changing unit (3) and a repair unit (4); the mounting cylinder (1) is placed on a horizontal foundation; the cleaning unit (2) is fixedly connected to the mounting cylinder (1); the cleaning unit (2) is fixedly connected to the mounting cylinder (1); the diameter-changing unit (3) is fixedly connected to the mounting cylinder (1); the diameter-changing unit (3) is fixedly connected to the repair unit (4); the diameter-changing unit (3) has the function of self-adaptively adjusting the pipe diameter; the repair unit (4) is fixedly connected to the mounting cylinder (1); and a rotating ring is provided on the mounting cylinder (1).

2. The diameter-adaptive pipe spray repair device according to claim 1, characterized in that: The cleaning unit (2) comprises a driving motor (21), a rotating shaft (22), a spring telescopic plate (23) and a scraper (24); the fixed end of the driving motor (21) is fixedly mounted on the mounting tube (1); the output end of the driving motor (21) is fixedly connected to the rotating shaft (22); the fixed end of the spring telescopic plate (23) is fixedly mounted on the rotating shaft (22); the spring telescopic plate (23) is rotatably connected to the scraper (24); and the fixed end of the spring telescopic plate (23) is fixedly connected to the rotating ring of the mounting tube (1).

3. The diameter-adaptive pipe spray repair device according to claim 2, characterized in that: The cleaning unit (2) further comprises a roller (25), a roller (26), a retaining ring (27), a connecting rod (28) and a pull rope (29); the roller (25) abuts against the telescopic end surface of the spring telescopic plate (23); the roller (25) is fixedly connected to the roller (26); the roller (26) is fixedly connected to the retaining ring (27); the retaining ring (27) is fixedly connected to one end of the connecting rod (28); the other end of the connecting rod (28) is fixedly connected to the fixed end of the spring telescopic plate (23); one end of the pull rope (29) is evenly wound around the retaining ring (27); and the other end is fixedly connected to the scraper (24).

4. The diameter-adaptive pipe spray repair device according to claim 1, characterized in that: The variable diameter unit (3) comprises a pulley (31), a fixed block (32), a support rod (33), a slider (34) and a telescopic spring (35); the pulley (31) is rotatably mounted on the fixed block (32); one end of the support rod (33) is rotatably connected to the fixed block (32); the other end of the support rod (33) is rotatably connected to the slider (34); the slider (34) is slidably mounted in a fixed box (36); and one end of the telescopic spring (35) is fixedly connected to the slider (34).

5. The diameter-adaptive pipe spray repair device according to claim 4, characterized in that: The variable diameter unit (3) further comprises a fixed box (36), a sliding rod (37), a circular disc (38), a movable plate (39) and a guide column (310); the other end of the telescopic spring (35) is fixedly connected to the fixed box (36); one end of the sliding rod (37) passes through the fixed box (36) and is fixedly connected to the slider (34) on the side close to the circular disc (38); the other end of the sliding rod (37) is fixedly connected to the circular disc (38); the circular disc (38) is fixedly connected to the movable plate (39); the movable plate (39) is slidably mounted on the guide column (310); the guide column (310) is fixedly connected to the inner wall of the mounting cylinder (1); and the movable plate (39) is fixedly connected to the repair unit (4).

6. The diameter-adaptive pipe spray repair device according to claim 5, characterized in that: The repair unit (4) comprises a rotating motor (41), a driving magnetic turntable (42), a driven magnetic turntable (43), a spray barrel (44), a nozzle (45) and a long rod (46); the fixed end of the rotating motor (41) is fixedly mounted on the movable plate (39); the telescopic end of the rotating motor (41) is fixedly connected to the driving magnetic turntable (42); the driven magnetic turntable (43) is fixedly connected to the spray barrel (44); the nozzle (45) is connected to the spray barrel (44) via a torsion spring; the spray barrel (44) is fixedly connected to the long rod (46); an electric push plate is provided in the spray barrel (44); a heating wire is provided in the spray barrel (44); the nozzle (45) is made of copper, and the nozzle (45) is electrically connected to the heating wire.

7. The diameter-adaptive pipe spray repair device according to claim 6, characterized in that: The repair unit (4) further comprises an inner rotating ring (47), an outer rotating ring (48), a lifting lug (49), a sliding column (410), a weight block (411), a magnet group (412), a bent rod (413) and a steel rope (414). The inner rotating ring (47) is fixedly connected to the long rod (46). The inner rotating ring (47) is fixedly mounted on the outer rotating ring (48). A lifting lug (49) is provided on the inner rotating ring (47). The outer rotating ring (48) is rotatably mounted on the end face of the mounting tube (1). One end of the sliding column (410) is connected to the outer surface of the inner rotating ring (47). The sliding column (410) is fixedly connected to the inner surface of the outer rotating ring (48), the other end of the sliding column (410) is fixedly connected to the inner surface of the outer rotating ring (48), the gravity block (411) is slidably installed on the sliding column (410), the gravity block (411) is made of iron, the gravity block (411) is electrically connected to the electric push plate in the spray barrel (44), the magnet group (412) is fixedly connected to the outer surface of the mounting tube (1) through the bending rod (413), one end of the steel rope (414) is fixedly connected to the end of the nozzle (45), and the other end passes through the lifting ear (49) and is fixedly connected to the gravity block (411).

8. The diameter-adaptive pipe spray repair device according to claim 7, characterized in that: An induction coil is evenly wound on the sliding column (410), and one end of the induction coil on the sliding column (410) close to the inner rotating ring (47) is a current input end.

9. The diameter-adaptive pipe spray repair device according to claim 7, characterized in that: There are two magnet groups (412), the two magnet groups (412) are placed in parallel, and the two magnet groups (412) are close to each other and have opposite polarities.

10. The diameter-adaptive pipe spray repair device according to claim 1, characterized in that: The installation tube (1) is provided with a controller, and the installation tube (1) is provided with an insertion interface.

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