A ductile iron pipe spraying device

Abstract

The present invention belongs to the field of spraying devices, and specifically discloses a ductile iron pipe spraying device, including a dual-medium feeding mechanism, a self-driven rotating mechanism, an adaptive anti-deviation mechanism and a traveling support mechanism, wherein the self-driven rotating mechanism is arranged on the dual-medium feeding mechanism, the adaptive anti-deviation mechanism is arranged below the dual-medium feeding mechanism, and the traveling support mechanism is arranged below the dual-medium feeding mechanism. The present invention creatively proposes an adaptive anti-deviation mechanism and a traveling support mechanism, which can not only cope with pipes of different diameters, but also can sense the tilt direction and amplitude of the entire device in real time according to the offset direction and amplitude of the sensing slider, thereby avoiding problems such as rollover caused by continuous offset through adaptive negative feedback regulation.

Description

Technical Field

[0001] The invention belongs to the technical field of spraying devices, and in particular relates to a ductile iron pipe spraying device. Background Art

[0002] Ductile cast pipes are mainly used for the transportation of tap water or fluid media such as oil and gas. They have excellent corrosion resistance, good ductility, good sealing effect and easy installation. When using them, it is necessary to select appropriate internal and external coatings according to internal and external conditions.

[0003] Existing internal coatings include epoxy resin, polyurethane, PE film coating, etc. Most of these coatings are applied by spraying. There are still many problems when the existing spraying device is used to spray the internal coating of the pipeline:

[0004] A: Although the nozzles are evenly distributed in a ring shape, there are still differences in the spraying effects between the front radiation range and the side radiation range of the nozzles, and the problem of over-thick spraying is more likely to occur in the overlapping coverage range of adjacent nozzles.

[0005] B: The inner diameters of ductile iron pipes vary in size, so the nozzle needs to be kept coaxial with the pipe to achieve the best spraying effect.

[0006] C: Since the inside of the pipe is also a curved surface, the direction of travel of the spray device needs to be continuously corrected, otherwise it will easily cause the spray device to tilt and overturn.

[0007] D: Since the inside of the pipe is a relatively independent space, if the dust and small particles suspended in the inner wall of the pipe cannot be discharged before spraying, they may be mixed in the coating and affect the coating quality. Summary of the invention

[0008] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a ductile iron pipe spraying device. In order to make the spraying more uniform, the present invention proposes a rotary spraying method, which solves the problem of different spraying thicknesses at different positions through continuous rotation. In order to simplify the structure, the present invention also creatively proposes a self-driven rotating mechanism, which uses air used to displace and discharge dust as a driving force, thereby simplifying the structure and achieving the technical effect of automatically driving the nozzle to rotate.

[0009] Moreover, the present invention also creatively proposes an adaptive anti-deviation mechanism and a traveling support mechanism, which can not only cope with pipes of different diameters, but also sense the tilt direction and amplitude of the entire device in real time according to the offset direction and amplitude of the sensing slider, thereby avoiding problems such as roll caused by continuous offset through adaptive negative feedback adjustment.

[0010] The technical solution adopted by the present invention is as follows: The present invention proposes a ductile iron pipe spraying device, including a dual-medium feeding mechanism, a self-driven rotating mechanism, an adaptive anti-deviation mechanism and a traveling support mechanism, wherein the self-driven rotating mechanism is arranged on the dual-medium feeding mechanism, the adaptive anti-deviation mechanism is arranged below the dual-medium feeding mechanism, and the traveling support mechanism is arranged below the dual-medium feeding mechanism.

[0011] When the device is used for spraying the inner wall of a ductile iron pipe, it can not only improve the spraying quality and avoid impurity residue by means of gas replacement and rotary spraying, but also avoid a large degree of overall tilt and deviation by automatically adjusting the direction of travel.

[0012] Furthermore, the dual-medium feeding mechanism includes a bracket assembly and a dual-medium feeding assembly, the dual-medium feeding assembly is arranged on the bracket assembly, the bracket assembly includes a main body bottom plate and a pipe bracket, and the pipe bracket is arranged on the main body bottom plate.

[0013] Preferably, the dual-medium feeding assembly comprises a liquid infusion pipeline, a gas infusion pipeline and a pipeline support frame, the gas infusion pipeline is snap-fitted into the pipeline support frame, the pipeline support frame is snap-fitted into the gas infusion pipeline, the pipeline support frame array is provided with a plurality of groups, the liquid infusion pipeline is snap-fitted into the pipeline support frame, and a side branch pipeline is provided on the gas infusion pipeline.

[0014] Hiding the infusion pipeline inside the gas pipeline can, on the one hand, simplify the wiring harness and avoid abnormal situations caused by entanglement; on the other hand, it can also provide additional protection for the infusion pipeline through the gas pipeline, thereby reducing the risk of damage and leakage of the infusion pipeline.

[0015] Furthermore, the self-driven rotating mechanism comprises a rotating support assembly and a self-driven rotating atomizing assembly. The rotating support assembly is arranged on the bottom plate of the main body, and the self-driven rotating atomizing assembly is rotatably arranged in the rotating support assembly.

[0016] Preferably, the rotating support assembly comprises an impeller housing and a support bearing, the impeller housing is arranged on the main body bottom plate, the end of the gas pipeline is against the impeller housing but does not penetrate, the side of the impeller housing is provided with a side joint, the gas pipeline is penetrated through the side branch pipeline and the side joint, the liquid delivery pipeline is clamped in the impeller housing, the impeller housing is provided with a gas diffusion part, the center position of the gas diffusion part is provided with a central circular ring part, and the outer ring of the support bearing is clamped in the central circular ring part.

[0017] The gas pipeline is connected with the impeller casing through the side branch pipeline. On the one hand, it can better play the driving role of the air. On the other hand, it can diffuse the air in the gas pipeline into the pipeline through the window on the gas diffusion part. Combined with the sealing state of the pipeline end, it can achieve the technical effect of replacing the air in the pipe and discharging the dust in the pipe.

[0018] As a further preferred embodiment of the present invention, the self-driven rotary atomization assembly includes a hollow shaft, a rotating impeller, a diffusion disk and an atomizing nozzle, the hollow shaft is rotatably arranged in the impeller housing, the inner ring of the support bearing is clamped on the hollow shaft, the rotating impeller is clamped on the hollow shaft, the outer portion of the rotating impeller is evenly distributed in an annular shape with arc blades, the diffusion disk is clamped on the end of the hollow shaft, the diffusion disk is provided with a disk center cavity, the atomizing nozzles are evenly distributed in an annular shape on the diffusion disk, and the tail of the atomizing nozzle is located in the disk center cavity.

[0019] Through the setting of the hollow shaft and the rotating impeller, the liquid transmission can be kept continuous. Without setting any independent rotating drive device, the diffusion disk and the atomizing nozzle can be driven to rotate continuously only by airflow, and the technical effect of rotary spraying is achieved with a simple, reliable and ingenious structure.

[0020] Furthermore, the adaptive anti-deviation mechanism includes an elastic clamping component, a steering wheel component and a tilt sensing component, the elastic clamping component is arranged below the main body bottom plate, the steering wheel component is arranged on the elastic clamping component, and the tilt sensing component is arranged on the steering wheel component.

[0021] Through the sensing and adaptive adjustment of the adaptive anti-deviation mechanism, when the traveling direction deviates, it can automatically sense the current deviation state and adjust the traveling direction in real time, thereby avoiding large tilt and deviation of the entire device when traveling in the pipeline.

[0022] Preferably, the elastic clamping assembly comprises a telescopic sleeve, a telescopic rod and a clamping spring, the telescopic sleeve is arranged at the bottom of the main body bottom plate, the telescopic rod is slidably engaged in the telescopic sleeve, and the clamping spring is sleeved on the outside of the telescopic sleeve and the telescopic rod.

[0023] Through the elastic force of the compression spring, the steering wheel can contact and squeeze the inner wall of the ductile iron pipes of different diameters, so that the directional deflection of the steering wheel can effectively affect the overall moving direction of the device.

[0024] As a further preferred embodiment of the present invention, the steering wheel assembly includes a T-shaped bracket, a steering wheel and a steering link, the T-shaped bracket is arranged on the telescopic rod, the compression spring is arranged between the main body bottom plate and the T-shaped bracket, the steering wheel is arranged below the T-shaped bracket, the end of the steering link is arranged on the fork frame of the steering wheel, and the steering link is also provided with an elastic bending portion.

[0025] As a further preferred embodiment of the present invention, the tilt sensing component includes a guide slide rod, a sensing slider and a return spring, the guide slide rod is fixedly connected to a T-shaped bracket, the sensing slider is slidably engaged on the guide slide rod, the return spring is arranged between the side wing of the T-shaped bracket and the sensing slider, the steering link is provided with a hinge part, the bottom of the sensing slider is provided with a hinge boss, and the steering link is rotatably arranged on the hinge boss through the hinge part.

[0026] The sliding of the sensing slider can provide feedback on the current overall tilt of the device, and the sliding sensing slider can drive the steering link to change the direction of the steering wheel, thereby achieving the technical effect of adaptive direction correction. The elastic bending portion can cause the sensing slider to slide laterally, that is, when the distance between the hinged boss and the steering wheel changes, the problem of jamming can be avoided.

[0027] Furthermore, the traveling support mechanism includes a traveling component, a height adjustment component, a guide component and a rotation adjustment component, the height adjustment component is arranged between the traveling component and the main body bottom plate, the guide component is arranged between the two groups of traveling components, and the rotation adjustment component is arranged between the two groups of traveling components.

[0028] Preferably, the traveling component includes a traveling bracket and a traveling wheel, and the traveling wheel is rotatably arranged in the traveling bracket; the height adjustment component includes a swing connecting rod and a swing articulated seat, and the swing articulated seat is respectively arranged on the side of the main body bottom plate and the side of the traveling bracket, and the two ends of the swing connecting rod are hinged to the swing articulated seat.

[0029] By adjusting the opening angle of the traveling bracket, the device can adjust the diffusion disk to the center position of the ductile iron pipe when facing ductile iron pipes with different diameters within a certain range.

[0030] As a further preferred embodiment of the present invention, the guide assembly includes a T-shaped guide rod and a long guide rod. The T-shaped guide rod is lifted and slidably arranged in the bottom plate of the main body. A circular through hole is provided on the T-shaped guide rod. Two long guide rods are symmetrically provided. The long guide rod is snap-fitted and slidably arranged in the T-shaped guide rod. One end of the long guide rod is fixedly connected to the traveling bracket.

[0031] Through the cooperation of the T-shaped guide rod and the long guide rod, on the one hand, the traveling brackets on both sides can always be kept at the same height, and on the other hand, the adjustment of the rotation adjustment component can be guided.

[0032] As a further preferred embodiment of the present invention, the rotation adjustment assembly includes a fixed screw and a sleeve nut, and two fixed screws are provided. The fixed screws are fixedly connected to the traveling bracket, and the sleeve nut is threadedly connected to the two fixed screws at the same time. The threaded transmission between the fixed screw and the sleeve nut has a self-locking function. When the sleeve nut rotates, the fixed screws at both ends extend and retract simultaneously relative to the sleeve nut.

[0033] By rotating the sleeve nut, the two sets of traveling brackets can be controlled to move toward or away from each other synchronously, and in the process, the symmetry of the two sets of traveling components relative to the main body bottom plate can be maintained, thereby achieving height adjustment of the dual-medium feeding mechanism and the self-driven rotating mechanism.

[0034] The beneficial effects achieved by the present invention using the above structure are as follows:

[0035] (1) When the device is used for spraying the inner wall of a ductile iron pipe, it can not only improve the spraying quality and avoid impurity residue by means of gas replacement and rotary spraying, but also avoid a large degree of overall tilt and deviation by automatically adjusting the direction of travel.

[0036] (2) Hiding the infusion pipeline inside the gas pipeline can, on the one hand, simplify the wiring harness and avoid abnormal situations caused by entanglement; on the other hand, it can provide additional protection for the infusion pipeline through the gas pipeline, thereby reducing the risk of damage and leakage of the infusion pipeline.

[0037] (3) The gas pipeline is connected to the impeller casing through the side branch pipeline. On the one hand, it can better play the driving role of the air. On the other hand, it can diffuse the air in the gas pipeline into the pipeline through the window on the gas diffusion part. Combined with the blocking state of the end of the pipeline, it can achieve the technical effect of replacing the air in the pipe and discharging the dust in the pipe.

[0038] (4) Through the setting of the hollow shaft and the rotating impeller, the liquid transmission can be kept continuous. Without setting any independent rotating drive device, the diffusion disk and the atomizing nozzle can be driven to rotate continuously only by air flow, thus achieving the technical effect of rotary spraying with a simple, reliable and ingenious structure.

[0039] (5) Through the sensing and adaptive adjustment of the adaptive anti-deviation mechanism, when the direction of travel deviates, it can automatically sense the current deviation state and adjust the direction of travel in real time, thereby avoiding large tilt and deviation of the entire device when traveling in the pipeline.

[0040] (6) Through the elastic force of the compression spring, the steering wheel can contact and squeeze the inner wall of the ductile iron pipe with different diameters, so that the directional deflection of the steering wheel can effectively affect the overall moving direction of the device.

[0041] (7) The sliding of the sensing slider can provide feedback on the overall tilt of the device, and the sliding sensing slider can drive the steering link to change the direction of the steering wheel, thereby achieving the technical effect of adaptively correcting the direction. The elastic bending portion can avoid the problem of jamming when the sensing slider slides laterally, that is, when the distance between the hinge boss and the steering wheel changes.

[0042] (8) By adjusting the opening angle of the traveling bracket, the device can adjust the diffusion disk to the center position of the ductile iron pipe when facing ductile iron pipes of different diameters within a certain range.

[0043] (9) Through the cooperation of the T-shaped guide rod and the long guide rod, on the one hand, the traveling brackets on both sides can always be kept at the same height, and on the other hand, the adjustment of the rotation adjustment component can be guided.

[0044] (10) By rotating the sleeve nut, the two groups of traveling brackets can be controlled to move toward or away from each other synchronously, and in the process, the symmetry of the two groups of traveling components relative to the main body bottom plate can be maintained, thereby realizing the height adjustment of the dual-medium feeding mechanism and the self-driven rotating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A three-dimensional diagram of a ductile iron pipe spraying device proposed by the present invention;

[0046] Figure 2 This is a front view of a ductile iron pipe spraying device proposed by the present invention;

[0047] Figure 3 This is a left view of a ductile iron pipe spraying device proposed by the present invention;

[0048] Figure 4 A bottom view of a ductile iron pipe spraying device proposed by the present invention;

[0049] Figure 5 for Figure 2 A cross-sectional view along the cutting line AA;

[0050] Figure 6 for Figure 3 A cross-sectional view along the cutting line BB;

[0051] Figure 7 An exploded view of a ductile iron pipe spraying device proposed by the present invention;

[0052] Figure 8 for Figure 5 A partial enlarged view of point Ⅰ in the middle;

[0053] Fig. 9 for Figure 4 A partial enlarged view of the middle II;

[0054] Fig.10 for Figure 5 A partial enlarged view of the middle part III;

[0055] Fig.11 for Figure 7 A partial enlarged view of the middle IV;

[0056] Fig.12 for Figure 5 A partial enlarged view of point V in the middle;

[0057] Fig.13 This is a schematic diagram of the position of a ductile iron pipe spraying device proposed by the present invention in a ductile iron pipe, wherein the outer dotted circle indicates the position of the ductile iron pipe.

[0058] Among them, 1. dual-medium feeding mechanism, 2. self-driven rotating mechanism, 3. adaptive anti-deviation mechanism, 4. travel support mechanism, 5. bracket assembly, 6. dual-medium feeding assembly, 7. main body bottom plate, 8. pipeline bracket, 9. infusion pipeline, 10. gas pipeline, 11. pipeline support frame, 12. side branch pipeline, 13. rotating support assembly, 14. self-driven rotating atomization assembly, 15. impeller housing, 16. support bearing, 17. hollow shaft, 18. rotating impeller, 19. diffusion disc, 20. atomizing nozzle, 21. side joint, 22. gas diffusion part, 23. central annular part, 24. arc blade, 25. disc center cavity, 26. elastic pressure Tightening assembly, 27, steering wheel assembly, 28, tilt sensing assembly, 29, telescopic sleeve, 30, telescopic rod, 31, compression spring, 32, T-shaped bracket, 33, steering wheel, 34, steering connecting rod, 35, guide slide bar, 36, sensing slider, 37, reset spring, 38, hinged portion, 39, elastic bending portion, 40, hinged boss, 41, travel assembly, 42, height adjustment assembly, 43, guide assembly, 44, rotation adjustment assembly, 45, travel bracket, 46, travel wheel, 47, swing connecting rod, 48, swing hinge seat, 49, T-shaped guide rod, 50, guide long rod, 51, fixed screw rod, 52, sleeve nut, 53, circular through hole.

[0059] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0061] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0062] like Figure 1 to Figure 12 As shown, the present invention proposes a ductile iron pipe spraying device, comprising a dual-medium feeding mechanism 1, a self-driven rotating mechanism 2, an adaptive anti-deviation mechanism 3 and a traveling support mechanism 4, the self-driven rotating mechanism 2 is arranged on the dual-medium feeding mechanism 1, the adaptive anti-deviation mechanism 3 is arranged below the dual-medium feeding mechanism 1, and the traveling support mechanism 4 is arranged below the dual-medium feeding mechanism 1.

[0063] When the device is used for spraying the inner wall of a ductile iron pipe, it can not only improve the spraying quality and avoid impurity residue by means of gas replacement and rotary spraying, but also avoid a large degree of overall tilt and deviation by automatically adjusting the direction of travel.

[0064] The dual-medium feeding mechanism 1 includes a bracket assembly 5 and a dual-medium feeding assembly 6 . The dual-medium feeding assembly 6 is arranged on the bracket assembly 5 . The bracket assembly 5 includes a main body bottom plate 7 and a pipe bracket 8 . The pipe bracket 8 is arranged on the main body bottom plate 7 .

[0065] The traveling support mechanism 4 includes a traveling component 41, a height adjustment component 42, a guide component 43 and a rotation adjustment component 44. The height adjustment component 42 is arranged between the traveling component 41 and the main body bottom plate 7, the guide component 43 is arranged between the two groups of traveling components 41, and the rotation adjustment component 44 is arranged between the two groups of traveling components 41.

[0066] The traveling component 41 includes a traveling bracket 45 and a traveling wheel 46, and the traveling wheel 46 is rotatably arranged in the traveling bracket 45; the height adjustment component 42 includes a swing link 47 and a swing hinge seat 48, and the swing hinge seat 48 is respectively arranged on the side of the main body bottom plate 7 and the side of the traveling bracket 45, and the two ends of the swing link 47 are hinged to the swing hinge seat 48.

[0067] By adjusting the opening angle of the traveling bracket 45 , when facing ductile iron pipes with different diameters within a certain range, the device can adjust the diffusion disk 19 to the center position of the ductile iron pipe.

[0068] The guide assembly 43 includes a T-shaped guide rod 49 and a long guide rod 50. The T-shaped guide rod 49 is lifted and slidably arranged in the main body bottom plate 7. A circular through hole 53 is provided on the T-shaped guide rod 49. Two long guide rods 50 are symmetrically provided. The long guide rods 50 are snap-fitted and slidably arranged in the T-shaped guide rod 49. One end of the long guide rod 50 is fixedly connected to the traveling bracket 45.

[0069] Through the cooperation of the T-shaped guide rod 49 and the long guide rod 50 , on the one hand, the traveling brackets 45 on both sides can always be kept at the same height, and on the other hand, the adjustment of the rotation adjustment component 44 can be guided.

[0070] The rotation adjustment assembly 44 includes a fixed screw rod 51 and a sleeve nut 52. There are two fixed screw rods 51. The fixed screw rods 51 are fixedly connected to the traveling bracket 45. The sleeve nut 52 is threadedly connected to the two fixed screw rods 51 at the same time. The threaded transmission between the fixed screw rod 51 and the sleeve nut 52 has a self-locking function. When the sleeve nut 52 rotates, the fixed screw rods 51 at both ends are extended and retracted simultaneously relative to the sleeve nut 52.

[0071] By rotating the sleeve nut 52, the two groups of traveling brackets 45 can be controlled to move toward or away from each other synchronously, and in the process, the symmetry of the two groups of traveling components 41 relative to the main body bottom plate 7 is maintained, thereby achieving height adjustment of the dual-medium feeding mechanism 1 and the self-driven rotating mechanism 2.

[0072] The dual-medium feeding assembly 6 includes a liquid delivery pipeline 9, a gas delivery pipeline 10 and a pipeline support frame 11. The gas delivery pipeline 10 is snap-fitted into the pipeline support frame 8, and the pipeline support frame 11 is snap-fitted into the gas delivery pipeline 10. The pipeline support frame 11 array is provided with several groups. The liquid delivery pipeline 9 is snap-fitted into the pipeline support frame 11, and a side branch pipeline 12 is provided on the gas delivery pipeline 10.

[0073] Hiding the infusion pipeline 9 inside the gas pipeline 10 can, on the one hand, simplify the wiring harness and avoid abnormal situations caused by entanglement; on the other hand, it can also provide additional protection for the infusion pipeline 9 through the gas pipeline 10, thereby reducing the risk of damage and leakage of the infusion pipeline 9.

[0074] The self-driven rotating mechanism 2 includes a rotating support assembly 13 and a self-driven rotating atomizing assembly 14 . The rotating support assembly 13 is disposed on the main body bottom plate 7 , and the self-driven rotating atomizing assembly 14 is rotatably disposed in the rotating support assembly 13 .

[0075] The rotating support assembly 13 includes an impeller housing 15 and a support bearing 16. The impeller housing 15 is arranged on the main body bottom plate 7. The end of the gas pipeline 10 is against the impeller housing 15 but does not penetrate. A side joint 21 is provided on the side of the impeller housing 15. The gas pipeline 10 penetrates the side joint 21 through the side branch pipeline 12. The liquid delivery pipeline 9 is clamped in the impeller housing 15. A gas diffusion part 22 is provided on the impeller housing 15. A central circular ring part 23 is provided at the center of the gas diffusion part 22. The outer ring of the support bearing 16 is clamped in the central circular ring part 23.

[0076] The gas pipeline 10 is connected to the impeller casing 15 through the side branch pipeline 12. On the one hand, it can better play the driving role of the air. On the other hand, it can also diffuse the air in the gas pipeline 10 into the pipeline through the window on the gas diffusion part 22. Combined with the blocking state of the end of the pipeline, the technical effect of replacing the air in the pipe and discharging the dust in the pipe is achieved.

[0077] The self-driven rotary atomizing assembly 14 includes a hollow rotating shaft 17, a rotating impeller 18, a diffusion disk 19 and an atomizing nozzle 20. The hollow rotating shaft 17 is rotatably arranged in the impeller housing 15. The inner ring of the support bearing 16 is clamped on the hollow rotating shaft 17. The rotating impeller 18 is clamped on the hollow rotating shaft 17. The outer part of the rotating impeller 18 is evenly distributed in an annular shape with arc blades 24. The diffusion disk 19 is clamped on the end of the hollow rotating shaft 17. The diffusion disk 19 is provided with a disk center cavity 25. The atomizing nozzles 20 are evenly distributed in an annular shape on the diffusion disk 19, and the tail of the atomizing nozzles 20 is located in the disk center cavity 25.

[0078] By setting the hollow rotating shaft 17 and the rotating impeller 18, the liquid transmission can be kept continuous. Without setting any independent rotating drive device, the diffusion disk 19 and the atomizing nozzle 20 can be driven to rotate continuously only by airflow, thereby achieving the technical effect of rotary spraying with a simple, reliable and ingenious structure.

[0079] The adaptive anti-deviation mechanism 3 includes an elastic clamping component 26, a steering wheel component 27 and a tilt sensing component 28. The elastic clamping component 26 is arranged below the main body bottom plate 7, the steering wheel component 27 is arranged on the elastic clamping component 26, and the tilt sensing component 28 is arranged on the steering wheel component 27.

[0080] Through the sensing and adaptive adjustment of the adaptive anti-deviation mechanism 3, when the traveling direction deviates, the current deviation state can be automatically sensed, and the traveling direction can be adjusted in real time, thereby avoiding large tilt and deviation of the entire device when traveling in the pipeline.

[0081] The elastic clamping assembly 26 includes a telescopic sleeve 29, a telescopic rod 30 and a clamping spring 31. The telescopic sleeve 29 is arranged at the bottom of the main body bottom plate 7, the telescopic rod 30 is slidably engaged in the telescopic sleeve 29, and the clamping spring 31 is sleeved on the outside of the telescopic sleeve 29 and the telescopic rod 30.

[0082] Through the elastic force of the compression spring 31, the steering wheel 33 can contact and squeeze the inner wall of the ductile iron pipes of different diameters, so that the direction deflection of the steering wheel 33 can effectively affect the overall moving direction of the device.

[0083] The steering wheel assembly 27 includes a T-shaped bracket 32, a steering wheel 33 and a steering link 34. The T-shaped bracket 32 ​​is arranged on the telescopic rod 30, the compression spring 31 is arranged between the main body bottom plate 7 and the T-shaped bracket 32, the steering wheel 33 is arranged below the T-shaped bracket 32, the end of the steering link 34 is arranged on the fork frame of the steering wheel 33, and the steering link 34 is also provided with an elastic bending portion 39.

[0084] The tilt sensing assembly 28 includes a guide slide bar 35, a sensing slider 36 and a return spring 37. The guide slide bar 35 is fixedly connected to the T-shaped bracket 32. The sensing slider 36 is slidably arranged on the guide slide bar 35. The return spring 37 is arranged between the side wing of the T-shaped bracket 32 ​​and the sensing slider 36. A hinge portion 38 is provided on the steering link 34. A hinge boss 40 is provided at the bottom of the sensing slider 36. The steering link 34 is rotatably arranged on the hinge boss 40 through the hinge portion 38.

[0085] The sliding of the sensing slider 36 can provide feedback on the overall tilt of the device, and the sliding sensing slider 36 can drive the steering link 34 to change the orientation of the steering wheel 33, thereby achieving the technical effect of adaptively correcting the direction. The elastic bending portion 39 can enable the sensing slider 36 to slide laterally, that is, when the distance between the hinged boss 40 and the steering wheel 33 changes, the problem of jamming can be avoided.

[0086] like Fig.13 As shown, the middle position is a ductile iron pipe spraying device proposed by the present invention, and the outer circular dotted line indicates the position of the ductile iron pipe.

[0087] When in use, the user first needs to place the device in a ductile iron pipe so that the diffusion disc 19 and the atomizing nozzle 20 are located at one end of the pipe. When spraying begins, the entire device moves toward the other end of the pipe, that is, the diffusion disc 19 and the atomizing nozzle 20 are always located at the tail of the device. Then, the end of the ductile iron pipe where the device is located in the initial state is sealed with a cover, and then the external pump for supplying gas and the pump for supplying coating liquid raw materials are started.

[0088] The gas is transmitted between the interlayer between the liquid delivery pipe 9 and the gas delivery pipe 10. Since the end of the gas delivery pipe 10 is closed, the air will pass through the side branch pipe 12 and enter the impeller housing 15 from the side joint 21. At this time, the flowing air hits the arc blades 24 to drive the rotating impeller 18 and the hollow shaft 17 to rotate. Then, the air will enter the gas diffusion part 22 and be discharged to the outside through the window on the gas diffusion part 22.

[0089] Since one end of the pipe has been blocked at this time, no matter what direction the gas is sprayed from the gas diffusion part 22, it cannot force its way into the end where the cover is located. Instead, the gas originally located near the gas diffusion part 22 is squeezed out toward the end without the cover in a displacement manner, and the air containing dust particles is replaced by clean air, thereby achieving the effect of expelling dust particles in the air before spraying.

[0090] As the hollow shaft 17 rotates, the diffusion disc 19 and the atomizing nozzle 20 will also rotate accordingly, thereby achieving the technical effect of rotary spraying. The supply path of the coating liquid raw material is to first supply it into the infusion pipe 9 through an external pump and maintain the pressure, then enter the central cavity 25 of the disc through the through hole in the center of the hollow shaft 17, and finally be atomized by the atomizing nozzle 20 and sprayed on the inner wall of the pipe.

[0091] If the device is offset while moving toward the other end, the entire device will inevitably tilt accordingly. At this time, the sensing slider 36 will tilt downward under the action of gravity, thereby causing the steering wheel 33 to deflect toward the direction of the sensing slider 36 through the steering link 34. Since the deflection direction of the steering wheel 33 is opposite to the offset direction of the device, and the deflection amplitude of the steering wheel 33 corresponds to the offset amplitude of the device, the automatic angle adjustment of the steering wheel 33 can prevent the device from offsetting significantly.

[0092] When applied to ductile iron pipes with different inner diameters, the opening range of the traveling brackets 45 on both sides can be synchronously changed by rotating the sleeve nut 52, and the traveling components 41 on both sides will always remain symmetrical on the limiting straight line of the T-shaped guide rod 49 and the long guide rod 50.

[0093] The device can be driven to move by fixing a traction rope on the main body bottom plate 7 or by placing a hub motor in the traveling wheel 46 to achieve the movement of the device.

[0094] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0095] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A ductile iron pipe spraying device, characterized in that: The invention comprises a dual-medium feeding mechanism (1), a self-driving rotating mechanism (2), an adaptive anti-deviation mechanism (3) and a travel support mechanism (4), wherein the self-driving rotating mechanism (2) is arranged on the dual-medium feeding mechanism (1), the adaptive anti-deviation mechanism (3) is arranged below the dual-medium feeding mechanism (1), and the travel support mechanism (4) is arranged below the dual-medium feeding mechanism (1); The dual-medium feeding mechanism (1) comprises a support assembly (5) and a dual-medium feeding assembly (6), wherein the dual-medium feeding assembly (6) is arranged on the support assembly (5), and the support assembly (5) comprises a main body bottom plate (7) and a pipe support (8), wherein the pipe support (8) is arranged on the main body bottom plate (7); The self-driven rotating mechanism (2) comprises a rotating support assembly (13) and a self-driven rotating atomizing assembly (14); the rotating support assembly (13) is arranged on the main body bottom plate (7); and the self-driven rotating atomizing assembly (14) is rotatably arranged in the rotating support assembly (13); The adaptive anti-deviating mechanism (3) comprises an elastic clamping component (26), a steering wheel component (27) and a tilt sensing component (28), wherein the elastic clamping component (26) is arranged below the main body bottom plate (7), the steering wheel component (27) is arranged on the elastic clamping component (26), and the tilt sensing component (28) is arranged on the steering wheel component (27); The dual-medium feeding assembly (6) comprises a liquid delivery pipeline (9), a gas delivery pipeline (10) and a pipeline support frame (11); the gas delivery pipeline (10) is snap-fitted into the pipeline support frame (8); the pipeline support frame (11) is snap-fitted into the gas delivery pipeline (10); the pipeline support frame (11) is arrayed in a plurality of groups; the liquid delivery pipeline (9) is snap-fitted into the pipeline support frame (11); and a side branch pipeline (12) is provided on the gas delivery pipeline (10); The rotary support assembly (13) comprises an impeller housing (15) and a support bearing (16); the impeller housing (15) is arranged on the main body bottom plate (7); the end of the gas pipeline (10) abuts against the impeller housing (15) but does not penetrate therethrough; a side joint (21) is provided on the side of the impeller housing (15); the gas pipeline (10) penetrates through the side branch pipeline (12) and the side joint (21); the liquid delivery pipeline (9) is engaged in the impeller housing (15); a gas diffusion portion (22) is provided on the impeller housing (15); a central annular portion (23) is provided at the center of the gas diffusion portion (22); and the outer ring of the support bearing (16) is engaged in the central annular portion (23); The self-driven rotary atomizing assembly (14) comprises a hollow rotating shaft (17), a rotating impeller (18), a diffusion disc (19) and an atomizing nozzle (20); the hollow rotating shaft (17) is rotatably arranged in an impeller housing (15); the inner ring of the support bearing (16) is clamped on the hollow rotating shaft (17); the rotating impeller (18) is clamped on the hollow rotating shaft (17); the outer portion of the rotating impeller (18) is evenly distributed in an annular shape with arc-shaped blades (24); the diffusion disc (19) is clamped on the end of the hollow rotating shaft (17); a disc center cavity (25) is provided on the diffusion disc (19); the atomizing nozzle (20) is evenly distributed in an annular shape on the diffusion disc (19); and the tail of the atomizing nozzle (20) is located in the disc center cavity (25); The end of the ductile iron pipe where the device is located in the initial state is sealed by a cover; The elastic clamping assembly (26) comprises a telescopic sleeve (29), a telescopic rod (30) and a clamping spring (31); the telescopic sleeve (29) is arranged at the bottom of the main body bottom plate (7); the telescopic rod (30) is slidably engaged in the telescopic sleeve (29); and the clamping spring (31) is sleeved on the outside of the telescopic sleeve (29) and the telescopic rod (30); The steering wheel assembly (27) comprises a T-shaped bracket (32), a steering wheel (33) and a steering link (34); the T-shaped bracket (32) is arranged on the telescopic rod (30); the compression spring (31) is arranged between the main body bottom plate (7) and the T-shaped bracket (32); the steering wheel (33) is arranged below the T-shaped bracket (32); the end of the steering link (34) is arranged on a fork frame of the steering wheel (33); and the steering link (34) is further provided with an elastic bending portion (39); The tilt sensing assembly (28) comprises a guide slide bar (35), a sensing slider (36) and a return spring (37); the guide slide bar (35) is fixedly connected to the T-shaped bracket (32); the sensing slider (36) is slidably engaged with the guide slide bar (35); the return spring (37) is arranged between the side wing of the T-shaped bracket (32) and the sensing slider (36); a hinge portion (38) is provided on the steering link (34); a hinge boss (40) is provided at the bottom of the sensing slider (36); and the steering link (34) is rotatably arranged on the hinge boss (40) through the hinge portion (38).

2. A ductile iron pipe spraying device according to claim 1, characterized in that: The travel support mechanism (4) comprises a travel component (41), a height adjustment component (42), a guide component (43) and a rotation adjustment component (44); the height adjustment component (42) is arranged between the travel component (41) and the main body bottom plate (7); the guide component (43) is arranged between the two groups of travel components (41); and the rotation adjustment component (44) is arranged between the two groups of travel components (41); The traveling assembly (41) comprises a traveling bracket (45) and a traveling wheel (46), wherein the traveling wheel (46) is rotatably arranged in the traveling bracket (45); the height adjustment assembly (42) comprises a swing connecting rod (47) and a swing articulated seat (48), wherein the swing articulated seat (48) is respectively arranged on the side surface of the main body bottom plate (7) and the side surface of the traveling bracket (45), and the two ends of the swing connecting rod (47) are hinged to the swing articulated seat (48).

3. A ductile iron pipe spraying device according to claim 2, characterized in that: The guide assembly (43) comprises a T-shaped guide rod (49) and a guide long rod (50). The T-shaped guide rod (49) is slidably disposed in the main body bottom plate (7). A circular through hole (53) is provided on the T-shaped guide rod (49). Two guide long rods (50) are symmetrically provided. The guide long rods (50) are slidably disposed in the T-shaped guide rod (49) in an engaging manner. One end of the guide long rod (50) is fixedly connected to the traveling bracket (45).

4. A ductile iron pipe spraying device according to claim 3, characterized in that: The rotation adjustment assembly (44) comprises a fixed screw rod (51) and a sleeve nut (52), wherein two fixed screw rods (51) are provided, wherein the fixed screw rods (51) are fixedly connected to the travel bracket (45), and the sleeve nut (52) is simultaneously threadedly connected to the two fixed screw rods (51), wherein the threaded transmission between the fixed screw rod (51) and the sleeve nut (52) has a self-locking function, and when the sleeve nut (52) rotates, the fixed screw rods (51) at both ends are simultaneously extended and retracted relative to the sleeve nut (52).

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