A spraying device for preventing uneven thickness of a flue elastomer anticorrosive coating

Abstract

The present application relates to a kind of spraying device for preventing flue elastomer anticorrosive layer thickness uneven in flue anticorrosion spraying technical field, comprising: machine body, one end of the machine body is fixedly installed with side frame, and self-propelled mechanism is arranged on side frame and machine body;Storage cavity, the storage cavity is opened in the inside of machine body, and the bottom of the one end of storage cavity is opened with discharge hole in the middle position of the one end of machine body away from side frame, one end of the discharge hole is opened with mounting hole, and the inner wall of mounting hole is rotatably connected with the funnel-shaped discharge pipe by sealing bearing;Spraying assembly, the spraying assembly is arranged in one end of discharge pipe.In the present application, discharge pipe can rotate synchronously with spraying operation, cooperate with annular distribution spraying assembly to realize flue inner wall circumferential uniform spraying, coating is first sprayed to anti-splashing assembly inside simultaneously, after guiding and centrifugal effect, even again adhere to flue inner wall, fundamentally eliminate the problem of coating thickness uneven caused by coating rebound splashing.

Description

Technical Field

[0001] This invention relates to the field of flue anti-corrosion spraying technology, and in particular to a spraying device for preventing uneven thickness of the elastomer anti-corrosion layer in flues. Background Technology

[0002] As the core channel for industrial flue gas emission, flues are exposed to high temperature, high humidity, and highly corrosive flue gas conditions for a long time. Therefore, the inner wall of the flue must be equipped with an anti-corrosion layer to extend its service life. Among them, the elastomeric anti-corrosion layer is widely used in the anti-corrosion construction of the inner wall of flues due to its excellent corrosion resistance, tensile strength and sealing properties.

[0003] Currently, the elastomer anti-corrosion coating for flues is generally applied by spraying. Existing spraying equipment is mostly fixed single-nozzle spraying or manual hand-held spraying, which presents significant technical shortcomings in actual operation. Among these, the problems of spraying disorder and uneven anti-corrosion coating thickness caused by paint rebound and splashing are particularly prominent, becoming a key bottleneck restricting construction quality. During the spraying process, after the paint is sprayed onto the inner wall of the flue at a certain pressure, it is easily subjected to reverse rebound and radial splashing due to the impact of the wall surface and airflow disturbance. On the one hand, the splashed paint particles fall irregularly, forming localized material accumulation and drips on the already formed coating surface, resulting in localized thickness exceeding the standard. On the other hand, the rebounding material interferes with the normal spray trajectory and material mist distribution, leading to disordered circumferential and axial spraying coverage of the flue, resulting in localized missed spraying, thin spraying, and obvious joint marks, making it difficult to form a continuous, uniform, and dense anti-corrosion coating. Therefore, it is urgent to propose a spraying device to prevent uneven thickness of the elastomer anti-corrosion coating for flues to solve the above problems. Summary of the Invention

[0004] To address the above problems, the present invention provides a spraying device for preventing uneven thickness of the anti-corrosion layer on flue gas duct elastomers, comprising:

[0005] The machine body has a side frame fixedly installed at one end, and a self-propelled mechanism is provided on the side frame and the machine body;

[0006] The storage chamber is located inside the machine body, and a discharge hole is provided at the middle position between the bottom of one end of the storage chamber and the end of the machine body away from the side frame. A mounting hole is provided at one end of the discharge hole, and a funnel-shaped discharge pipe is rotatably connected to the inner wall of the mounting hole through a sealed bearing.

[0007] A spraying assembly is provided at one end of a discharge pipe, and a switch valve is fixedly installed at the inlet of the spraying assembly and the outlet of the discharge pipe.

[0008] A splash-proof assembly, wherein the splash-proof assembly is disposed on the spraying assembly;

[0009] A self-cleaning component is disposed on the splash-proof component and the body;

[0010] The machine body has an installation groove in the middle of one end near the side frame, and a dual-axis motor is fixedly installed on the inner wall of the installation groove. The other end of the storage chamber has a through hole communicating with the installation groove, and the inner wall of the through hole is rotatably connected to a drive shaft through a sealed bearing. One end of the output shaft of the dual-axis motor is fixedly connected to one end of the drive shaft. The other end of the drive shaft extends into the discharge hole, and a spiral pusher blade that fits against the inner wall of the discharge hole is fixedly installed on the outer wall of the other end of the drive shaft.

[0011] The present invention is further configured such that the spraying assembly includes a multi-port pipe fixedly installed at one end of the switch valve, and an annular pipe is fixed on the multi-port pipe. The outer wall of the annular pipe is fixed with L-shaped spray pipes that are evenly distributed in an annular pattern. One end of each L-shaped spray pipe is fixedly installed with a fan-shaped nozzle, and the spraying direction of the fan-shaped nozzle is horizontal relative to the inner wall of the flue.

[0012] The present invention is further configured such that the anti-splash component includes an arc-shaped flow guide shroud fixedly installed at equal intervals on the annular tube, and the arc-shaped flow guide shroud adopts a gradient arc design. An arc-shaped anti-splash baffle is fixedly installed on the top of the arc-shaped flow guide shroud and the outer wall of the fan-shaped nozzle, and the arc-shaped anti-splash baffle covers the spray position of the fan-shaped nozzle.

[0013] The invention is further configured such that the self-cleaning component includes a connecting shaft rotatably connected to the bottom of the arc-shaped flow guide, and blower plates evenly distributed on one side of the outer wall of the connecting shaft are fixedly installed. The blower plates are designed to be arc-shaped and located inside the arc-shaped flow guide. The length of the blower plates is adapted to the width of the inner wall of the arc-shaped flow guide. A gear ring is fixedly installed at one end of the machine body near the discharge pipe, and a gear disc that meshes with the inner wall of the gear ring is fixedly installed at one end of the connecting shaft. A protective cover plate covering one side of the gear ring is fixedly installed on the outer wall of the discharge pipe, and a through hole is opened on the protective cover plate for the connecting shaft to pass through. A sealing sleeve that fits against the outer wall of the connecting shaft is fixed on the inner wall of the through hole.

[0014] The invention is further configured such that stirring blades are fixedly installed on the outer wall of the drive shaft at equal intervals within the storage cavity, and the stirring blades are designed in a trumpet shape, with multiple disturbance grooves provided on each stirring blade.

[0015] The invention is further configured such that the self-propelled mechanism includes grooves equally spaced on the outer wall of the machine body, and a cross groove is provided at one end of the side frame. An L-shaped plate is movably arranged on the inner wall of the cross groove and the inner wall of the groove. An unfolding mechanism for driving the L-shaped plate is provided on the side frame. Multiple movable grooves are provided on the L-shaped plate, and a wheel axle is rotatably connected to the inner wall of each movable groove. A self-propelled wheel is fixed to the outer wall of each wheel axle. A transmission component for driving the self-propelled wheel to rotate is provided in the output shaft of the other end of the dual-axis motor and inside the L-shaped plate.

[0016] The present invention is further configured such that the unfolding mechanism includes sliding grooves equally spaced on the inner wall of the cross groove, and one end of each L-shaped plate is fixedly installed with a slider slidably disposed in the sliding groove. A forward and reverse motor is fixedly installed at the middle of the other end of the side frame. A turntable located in the side frame is fixedly installed on the output shaft of the forward and reverse motor. One side of the turntable is rotatably connected to a push-pull rod distributed at equal distances via a pin, and one end of each push-pull rod is rotatably connected to one end of the slider via a pin.

[0017] The invention is further configured such that the transmission assembly includes a mounting frame fixedly installed in the middle of the inner wall of the cross groove, and a first connecting hole is provided in the middle of each of the four sides of the mounting frame. A transmission cylinder is rotatably connected to the inner wall of each of the first connecting holes through bearings. A first bevel gear is fixedly installed at the bottom end of the transmission cylinder and the other end output shaft of the dual-axis motor. A connecting cavity is provided at the corner of the L-shaped plate, and a second connecting hole is provided at the bottom of the connecting cavity. A transmission rod inserted into the transmission cylinder is rotatably connected to the inner wall of the second connecting hole through bearings. A plurality of limiting grooves are provided on the inner wall of the transmission cylinder. A limiting strip inserted into the limiting groove is fixedly installed at the bottom of the outer wall of the transmission rod. A transmission shaft is rotatably connected to the L-shaped plate, and one end of the transmission shaft extends into the connecting cavity. A second bevel gear is fixedly installed at one end of the transmission shaft and the top end of the transmission rod. A plurality of worms are fixedly installed on the outer wall of the transmission shaft, and worm wheels are fixedly installed on the outer wall of each axle. The worm wheels mesh with the worms.

[0018] The invention is further configured such that a heat dissipation groove is provided between the mounting groove and one of the recesses, a handle is fixedly installed at the other end of the side frame, an injection hole is provided on one side of the top of the storage cavity, and an injection pipe is fixed on the inner wall of the injection hole, with a sealing cap provided on the injection pipe.

[0019] The invention is further configured such that equipment cavities are provided on both sides of the bottom of the machine body, and a controller and a storage battery are fixedly installed on the inner wall of the equipment cavity. A remote control unit is also fixedly installed in the equipment cavity, and the remote control unit is electrically connected to the controller. The remote control unit is equipped with a matching external remote control device. The remote control unit is used to receive control commands sent by the external remote control device and transmit the control commands to the controller. The controller controls the working status of the self-propelled mechanism, the switching valve and the dual-axis motor respectively, so as to realize remote control of the device after it enters the flue. The storage battery provides power support for the remote control unit, the controller and all electrical components of the device.

[0020] In summary, compared with the prior art, the present invention has the following advantages:

[0021] 1. In this invention, a spraying assembly structure consisting of a multi-pass pipe, an annular pipe, an annular equidistantly distributed L-shaped spray pipes, and fan-shaped nozzles is adopted. The paint is pressure-stabilized by a switching valve and enters the multi-pass pipe to achieve uniform flow distribution. Then, it is transported to each L-shaped spray pipe through the annular pipe. The fan-shaped nozzles keep the paint in a horizontal state and spray it directionally into the arc-shaped guide hood. Then, it is guided to the inner wall of the flue. This achieves uniform material mist distribution, stable spraying trajectory, and 360° circumferential spraying without dead angles. It solves problems such as disordered spraying, missed spraying, thin spraying, and obvious joint marks from the source, and ensures that the thickness of the elastomer anti-corrosion layer is consistent, dense and flat.

[0022] 2. In this invention, a splash-proof component structure is adopted, which is composed of a gradient arc-shaped guide hood and an arc-shaped splash guard. The paint sprayed horizontally by the fan-shaped nozzle first enters the interior of the gradient arc-shaped guide hood. Under the constraint of the guide hood and the centrifugal force of rotation, it is guided in an orderly manner to the inner wall of the flue, rather than directly impacting the wall surface. At the same time, the arc-shaped splash guard covers the spraying area of ​​the nozzle, effectively suppressing the reverse overflow and scattering of paint in the guide hood, making the paint delivery process more controllable, reducing rebound and disorderly splashing, and avoiding irregular scattering that causes local accumulation, dripping and uneven thickness.

[0023] 3. In this invention, a self-cleaning component structure consisting of a gear ring, a gear disc meshing transmission, a connecting shaft, and an arc-shaped blower plate is adopted. During the spraying operation, the discharge pipe drives the spraying component and the anti-splash component to rotate synchronously. The gear disc meshes and rotates along the inner wall of the fixed gear ring, thereby driving the connecting shaft and the blower plate to rotate continuously inside the arc-shaped guide hood and generate directional airflow. This continuously blows away the paint adhering to the inner wall of the guide hood and the inner side of the anti-splash baffle, realizing automatic cleaning of the inner wall of the anti-splash component, avoiding paint drying and scaling, clogging the flow channel, and maintaining the anti-splash effect and uniform spraying state.

[0024] 4. In this invention, an integrated feeding structure consisting of a dual-axis motor, drive shaft, stirring blades, and spiral pusher blades is adopted. The dual-axis motor drives the drive shaft to rotate, causing the stirring blades to continuously stir the coating in the storage chamber. This is combined with the turbulence channel to enhance the turbulence, preventing the elastomer coating from settling, separating, or becoming uneven in concentration. At the same time, the spiral pusher blades rotate closely against the inner wall in the discharge hole, achieving continuous, uniform, and stable feeding of the coating. This ensures a constant and controllable spraying flow rate and guarantees a uniform and consistent anti-corrosion layer thickness from the feeding end.

[0025] 5. In this invention, an unfolding and adjusting structure consisting of a reversible motor, a turntable, a push-pull rod, a slider, and an L-shaped plate is adopted. This is combined with a transmission and walking structure consisting of a bevel gear, a transmission cylinder, a transmission rod, a worm gear, a worm wheel, and a self-propelled wheel. The reversible motor drives the turntable and the push-pull rod to synchronously unfold the L-shaped plate to adapt to the support of flue walls with different inner diameters. Then, a dual-axis motor drives the self-propelled wheel to rotate at a uniform speed through the bevel gear, transmission cylinder, transmission rod, and worm gear pair. This enables the device to be centrally positioned in the flue, move smoothly, and move at a uniform speed, so that the moving speed and the spraying rate are precisely matched, ensuring continuous and uniform axial coating and reducing the phenomenon of thickness discontinuity.

[0026] 6. In this invention, a controller, remote control unit, battery, and integrated equipment cavity structure are adopted. The remote control unit receives external commands and the controller uniformly controls the start, stop, and operation status of the dual-axis motor, forward and reverse motor, and switching valve. With independent power supply from the battery, the device can achieve fully remote automated operation after entering the flue, without the need for manual hand-held or close-range operation, thus improving construction safety, operation continuity, and construction efficiency, and meeting the high-quality anti-corrosion spraying requirements under complex working conditions of industrial flues. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a spraying device for preventing uneven thickness of the anti-corrosion layer of flue gas duct elastomer according to the present invention.

[0028] Figure 2 This is a perspective transverse sectional view of a spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to the present invention.

[0029] Figure 3 This is a cross-sectional view of the spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to the present invention.

[0030] Figure 4 This is a schematic diagram of the L-shaped plate and stirring blade structure of a spraying device for preventing uneven thickness of the anti-corrosion layer of flue gas elastomer according to the present invention.

[0031] Figure 5 This is a schematic diagram of the unfolding mechanism of a spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to the present invention.

[0032] Figure 6 This is a schematic diagram of the transmission cylinder and transmission rod structure of a spraying device for preventing uneven thickness of the anti-corrosion layer of flue gas elastomer according to the present invention.

[0033] Figure 7 This is a schematic diagram of the limiting groove and limiting strip structure of a spraying device for preventing uneven thickness of the anti-corrosion layer of flue gas elastomer according to the present invention.

[0034] Figure 8 This is a longitudinal sectional view of the body of a spraying device for preventing uneven thickness of the anti-corrosion layer of flue gas elastomer according to the present invention.

[0035] Figure 9 This is a schematic diagram of the cross groove and slide groove structure of a spraying device for preventing uneven thickness of the anti-corrosion layer of flue gas elastomer according to the present invention.

[0036] Figure 10 This is a schematic diagram of the spraying component and self-cleaning component of a spraying device for preventing uneven thickness of the anti-corrosion layer of flue gas elastomer according to the present invention.

[0037] Figure 11 This is a side view of the anti-splash component and the spraying component of a spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to the present invention.

[0038] Figure 12 This is a schematic diagram of the blower plate structure of a spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to the present invention.

[0039] Explanation of the labels in the diagram:

[0040] 1. Machine body; 2. Self-propelled mechanism; 21. L-shaped plate; 22. Forward and reverse motor; 23. Groove; 24. Self-propelled wheel; 25. Cross groove; 26. Mounting frame; 27. Connecting cavity; 28. Turntable; 29. ​​Push-pull rod; 210. Slider; 211. Slide groove; 212. Worm gear; 213. Drive shaft; 214. Worm; 215. Drive cylinder; 216. Second bevel gear; 217. Drive rod; 218. First bevel gear; 219. Limiting groove; 220. Limiting strip; 221. Wheel axle; 3. Side frame; 4. Handle frame; 5. Injection pipe; 6. Self-cleaning component; 61 62. Gear ring; 63. Protective cover plate; 64. Gear disc; 65. Connecting shaft; 66. Blower plate; 7. Discharge pipe; 8. Spraying assembly; 81. Multi-port pipe; 82. Ring pipe; 83. L-shaped spray pipe; 84. Fan-shaped nozzle; 9. Anti-splash assembly; 91. Arc-shaped guide shield; 92. Arc-shaped anti-splash baffle; 10. Switch valve; 11. Storage chamber; 12. Drive shaft; 13. Dual-shaft motor; 14. Agitator blade; 15. Spiral pusher blade; 16. Discharge hole; 17. Mounting hole; 18. Mounting groove; 19. Heat dissipation groove; 20. Equipment cavity; 30. Controller; 40. Battery. Detailed Implementation

[0041] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0042] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] Please see Figures 1-12 This invention provides a spraying device for preventing uneven thickness of the anti-corrosion layer on flue gas duct elastomers, comprising:

[0045] The machine body 1 has a side frame 3 fixedly mounted on one end. A self-propelled mechanism 2 is provided on both the side frame 3 and the machine body 1. The self-propelled mechanism 2 can adapt to flues of different inner diameters and drive the machine body 1 to move smoothly along the flue axis. The self-propelled mechanism 2 includes grooves 23 evenly spaced on the outer wall of the machine body 1. A cross groove 25 is provided at one end of the side frame 3. An L-shaped plate 21 is movably mounted on the inner wall of the cross groove 25 and the inner wall of the groove 23. An unfolding mechanism for driving the L-shaped plate 21 is provided on the side frame 3. Multiple movable grooves are provided on the L-shaped plate 21, and axles 221 are rotatably connected to the inner walls of each movable groove. Self-propelled wheels 24 are fixed to the outer walls of each axle 221. The output shaft of the dual-axis motor 13 is located at the other end and is installed inside the L-shaped plate 21. The system includes a transmission assembly for driving the self-propelled wheels 24 to rotate. The unfolding mechanism includes equidistant grooves 211 on the inner wall of the cross groove 25. Each end of the L-shaped plate 21 is fixedly mounted with a slider 210 that slides within the groove 211. A forward / reverse motor 22 is fixedly mounted at the middle of the other end of the side frame 3. The output shaft of the forward / reverse motor 22 is fixedly mounted with a turntable 28 located within the side frame 3. One side of the turntable 28 is rotatably connected by a pin to equidistantly distributed push-pull rods 29, one end of each push-pull rod 29 being rotatably connected to one end of the slider 210 via a pin. The transmission assembly includes a mounting frame 26 fixedly mounted in the middle of the inner wall of the cross groove 25. A first connecting hole is provided at the center of each of the four sides of the mounting frame 26. The inner wall of each connecting hole is rotatably connected to a transmission cylinder 215 via bearings. The bottom end of the transmission cylinder 215 and the other output shaft of the dual-axis motor 13 are both fixedly mounted with meshing first bevel gears 218. A connecting cavity 27 is provided at the corner of the L-shaped plate 21, and a second connecting hole is provided at the bottom of the connecting cavity 27. The inner wall of the second connecting hole is rotatably connected to a transmission rod 217 inserted into the transmission cylinder 215 via bearings. Multiple limiting grooves 219 are provided on the inner wall of the transmission cylinder 215. A limiting strip 220 inserted into the limiting groove 219 is fixed to the bottom of the outer wall of the transmission rod 217. A transmission shaft 213 is rotatably connected to the L-shaped plate 21, and one end of the transmission shaft 213 extends into the connecting cavity 27. A second bevel gear 216 is fixedly installed at the top end of the transmission rod 217, meshing with the transmission rod 217. Multiple worm gears 214 are fixedly installed on the outer wall of the transmission shaft 213, and worm wheels 212 are fixed on the outer wall of the axle 221. The worm wheels 212 mesh with the worm gears 214. The output shaft of the other end of the dual-axis motor 13 drives the self-propelled wheel 24 to rotate at a uniform speed through the transmission cooperation of the first bevel gear 218, the transmission cylinder 215, the transmission rod 217, the second bevel gear 216, the transmission shaft 213, the worm gears 214 and the worm wheels 212. This drives the machine body 1 to move smoothly along the flue axial direction, so that the walking speed and the spraying rate are precisely matched, achieving uniform and stable automated spraying, fundamentally avoiding problems such as uneven thickness of the elastomer anti-corrosion layer and disordered spraying.

[0046] The storage chamber 11 is located inside the machine body 1. A discharge hole 16 is provided at the bottom of one end of the storage chamber 11 and at the middle position of the end of the machine body 1 away from the side frame 3. A mounting hole 17 is provided at one end of the discharge hole 16. A funnel-shaped discharge pipe 7 is rotatably connected to the inner wall of the mounting hole 17 through a sealed bearing.

[0047] The spraying assembly 8 is located at one end of the discharge pipe 7, and a switch valve 10 is fixedly installed at the inlet of the spraying assembly 8 and the outlet of the discharge pipe 7. The switch valve 10 is used to control the on / off of the coating and the flow rate adjustment. The spraying assembly 8 can achieve uniform annular spraying of the inner wall of the flue, avoiding uneven thickness of the anti-corrosion layer. The spraying assembly 8 includes a multi-port pipe 81 fixedly installed at one end of the switch valve 10, and an annular pipe 82 is fixed on the multi-port pipe 81. The outer wall of the annular pipe 82 is fixed with L-shaped spray pipes 83 that are evenly distributed in an annular pattern. A fan-shaped nozzle 84 is fixedly installed at one end of each L-shaped spray pipe 83. The spraying direction of the fan-shaped nozzle 84 is horizontal relative to the inner wall of the flue. The spraying pressure of the fan-shaped nozzle 84 can be synchronously adjusted by the switch valve 10.

[0048] Anti-splash component 9 is installed on spraying component 8 to block paint splashing during spraying, reduce paint waste and pollution of non-sprayed areas on the inner wall of flue. Anti-splash component 9 includes arc-shaped guide hoods 91 fixedly installed at equal intervals on annular pipe 82, and the arc-shaped guide hoods 91 adopt a gradient arc design. The top of the arc-shaped guide hoods 91 and the outer wall of the fan-shaped nozzles 84 are fixedly installed with arc-shaped anti-splash baffles 92, which cover the spray position of the fan-shaped nozzles 84. Both the arc-shaped guide hoods 91 and the arc-shaped anti-splash baffles 92 are made of corrosion-resistant and non-stick materials, and the surface is coated with polytetrafluoroethylene coating to avoid adhesion of elastomer paint and ensure stable guiding and anti-splash effects.

[0049] Self-cleaning component 6, installed on anti-splash component 9 and body 1, automatically cleans the paint adhering to the inner wall of anti-splash component 9, ensuring stable anti-splash effect. Self-cleaning component 6 includes a connecting shaft 64 rotatably connected to the bottom of arc-shaped guide shroud 91, with equally spaced blower plates 65 fixedly installed on one side of the outer wall of connecting shaft 64. The blower plates 65 are designed in an arc shape and located inside the arc-shaped guide shroud 91. The length of the blower plates 65 is adapted to the width of the inner wall of the arc-shaped guide shroud 91. When the blower plates 65 rotate, they generate airflow to clean the arc-shaped guide shroud 91 and the arc-shaped guide shroud 91. Paint adhering to the inner wall of the splash guard 92 is blown off to prevent scaling and clogging, thus achieving self-cleaning. A gear ring 61 is fixedly installed at one end of the machine body 1 near the discharge pipe 7, and a gear disc 63 that meshes with the inner wall of the gear ring 61 is fixedly installed at one end of the connecting shaft 64. A protective cover plate 62 covering one side of the gear ring 61 is fixedly installed on the outer wall of the discharge pipe 7, and a through hole is opened on the protective cover plate 62 for the connecting shaft 64 to pass through. A sealing sleeve that fits against the outer wall of the connecting shaft 64 is fixed on the inner wall of the through hole to prevent paint and dust from entering the meshing part of the gear ring 61 and the gear disc 63, thus avoiding transmission jamming.

[0050] A mounting groove 18 is provided at the middle of one end of the body 1 near the side frame 3, and a dual-axis motor 13 is fixedly installed on the inner wall of the mounting groove 18. A through hole communicating with the mounting groove 18 is provided at the other end of the storage chamber 11, and a drive shaft 12 is rotatably connected to the inner wall of the through hole through a sealed bearing. One end of the output shaft of the dual-axis motor 13 is fixedly connected to one end of the drive shaft 12. The other end of the drive shaft 12 extends into the discharge hole 16, and a spiral pusher blade 15 is fixedly installed on the outer wall of the other end of the drive shaft 12, which fits against the inner wall of the discharge hole 16. The spiral pusher blade 15 is used to push the paint in the storage chamber 11 to the discharge pipe 7 at a uniform speed and stably, so as to avoid uneven paint delivery and thus deviation in spray thickness.

[0051] In this invention, stirring blades 14 are fixedly installed on the outer wall of the drive shaft 12 at equal distances within the storage chamber 11. The stirring blades 14 are designed in a trumpet shape and each stirring blade 14 has multiple turbulence grooves. The stirring blades 14 rotate synchronously with the drive shaft 12, which can fully stir the elastomer coating in the storage chamber 11, prevent the coating from settling and separating, ensure uniform coating concentration, and guarantee consistent spray thickness.

[0052] In this invention, a heat dissipation groove 19 is provided between the mounting groove 18 and one of the grooves 23, a handle 4 is fixedly installed at the other end of the side frame 3, an injection hole is provided on one side of the top of the storage cavity 11, and an injection pipe 5 is fixed on the inner wall of the injection hole, and a sealing cap is provided on the injection pipe 5.

[0053] In this invention, equipment cavities 20 are provided on both sides of the bottom of the body 1. A controller 30 and a storage battery 40 are fixedly installed on the inner wall of the equipment cavity 20. A remote control unit is also fixedly installed in the equipment cavity 20 and is electrically connected to the controller 30. The remote control unit is equipped with a matching external remote control device. The remote control unit is used to receive control commands sent by the external remote control device and transmit the control commands to the controller 30. The controller 30 controls the working status of the self-propelled mechanism 2, the switching valve 10 and the dual-axis motor 13 respectively, so as to realize remote control after the device enters the flue. The storage battery 40 provides power support for the remote control unit, the controller 30 and all electrical components of the device.

[0054] In summary, the working principle of the present invention is as follows: First, an elastomer anti-corrosion coating is added to the storage chamber 11 inside the machine body 1 through the injection pipe 5. An external remote control device sends a command to the remote control unit inside the equipment chamber 20. The controller 30 starts the forward and reverse motor 22. The forward and reverse motor 22 drives the turntable 28 to rotate. The push-pull rod 29 and the slider 210 drive the L-shaped plate 21 to extend outward synchronously along the slide groove 211, so that the self-propelled wheel 24 fits against the inner wall of the flue, and the device is centered.

[0055] Subsequently, the dual-axis motor 13 is started, and its output shaft drives the drive shaft 12 to rotate. The trumpet-shaped stirring blades 14 on the drive shaft 12 work with the turbulence channel to continuously stir the coating in the storage chamber 11 to prevent sedimentation and stratification. At the same time, the spiral pusher blades 15 push the coating at a uniform speed to the discharge hole 16 and the discharge pipe 7. After the coating is stabilized by the switch valve 10, it enters the multi-pass pipe 81 and the annular pipe 82 of the spraying assembly 8. The L-shaped spray pipes 83 and the fan-shaped nozzles 84, which are distributed at equal intervals in the annular shape, are kept horizontal and sprayed directionally into the arc-shaped guide hood 91 of the anti-splash assembly 9. Under the constraint of the gradually curved guide hood and the centrifugal action of rotation, the coating is guided in an orderly manner to the inner wall of the flue. The arc-shaped anti-splash baffle 92 blocks the coating from overflowing and scattering in the opposite direction throughout the process, avoiding splashing and disorder.

[0056] When the discharge pipe 7 rotates, the toothed disc 63 of the self-cleaning component 6 meshes and rotates along the inner wall of the toothed ring 61, driving the connecting shaft 64 and the blower plate 65 to rotate in the arc-shaped guide shroud 91 to generate airflow, which blows and cleans the coating adhering to the inner wall in real time to prevent scaling and blockage.

[0057] Meanwhile, the output shaft of the other end of the dual-axis motor 13 drives the self-propelled wheel 24 to rotate at a uniform speed through the transmission cooperation of the first bevel gear 218, transmission cylinder 215, transmission rod 217, second bevel gear 216, transmission shaft 213, worm 214 and worm wheel 212, so that the machine body 1 can move smoothly along the flue axis, making the walking speed and spraying rate precisely matched. The whole process is powered by the battery 40 and uniformly controlled by the controller 30, realizing 360° no dead angle, uniform and stable automated spraying of the inner wall of the flue, fundamentally avoiding problems such as uneven thickness of the elastomer anti-corrosion layer and disordered spraying.

[0058] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A spraying device for preventing uneven thickness of the anti-corrosion layer on flue gas duct elastomers, characterized in that, include: The body (1) has a side frame (3) fixedly installed at one end, and a self-propelled mechanism (2) is provided on the side frame (3) and the body (1). Storage chamber (11) is located inside the body (1), and a discharge hole (16) is provided at the middle position between the bottom of one end of the storage chamber (1) and the end of the body (1) away from the side frame (3). A mounting hole (17) is provided at one end of the discharge hole (16), and a funnel-shaped discharge pipe (7) is rotatably connected to the inner wall of the mounting hole (17) through a sealed bearing. Spraying assembly (8), the spraying assembly (8) is set at one end of the discharge pipe (7), and the inlet of the spraying assembly (8) and the outlet of the discharge pipe (7) are fixedly equipped with a switch valve (10). Anti-splash assembly (9), said anti-splash assembly (9) is disposed on spray assembly (8); Self-cleaning component (6), which is disposed on splash-proof component (9) and body (1); The machine body (1) has an installation groove (18) at the middle of one end near the side frame (3), and a dual-axis motor (13) is fixedly installed on the inner wall of the installation groove (18). The other end of the storage chamber (11) has a through hole that communicates with the installation groove (18), and the inner wall of the through hole is rotatably connected to a drive shaft (12) through a sealed bearing. One end of the output shaft of the dual-axis motor (13) is fixedly connected to one end of the drive shaft (12). The other end of the drive shaft (12) extends into the discharge hole (16), and a spiral pusher blade (15) that fits against the inner wall of the discharge hole (16) is fixedly installed on the outer wall of the other end of the drive shaft (12).

2. The spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to claim 1, characterized in that, The spraying assembly (8) includes a multi-port pipe (81) fixedly installed at one end of the switch valve (10), and an annular pipe (82) is fixed on the multi-port pipe (81). The outer wall of the annular pipe (82) is fixed with L-shaped spray pipes (83) distributed in an annular pattern at equal intervals. A fan-shaped nozzle (84) is fixedly installed at one end of each L-shaped spray pipe (83). The spraying direction of the fan-shaped nozzle (84) is horizontal relative to the inner wall of the flue.

3. The spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to claim 2, characterized in that, The anti-splash assembly (9) includes an arc-shaped flow guide (91) fixedly installed at equal intervals on the annular tube (82), and the arc-shaped flow guide (91) adopts a gradient arc design. An arc-shaped anti-splash baffle (92) is fixedly installed on the top of the arc-shaped flow guide (91) and the outer wall of the fan-shaped nozzle (84), and the arc-shaped anti-splash baffle (92) covers the spray position of the fan-shaped nozzle (84).

4. The spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to claim 3, characterized in that, The self-cleaning component (6) includes a connecting shaft (64) rotatably connected to the bottom of the arc-shaped guide shroud (91), and blower plates (65) are fixedly installed on one side of the outer wall of the connecting shaft (64) at equal intervals. The blower plates (65) are designed to be arc-shaped and located inside the arc-shaped guide shroud (91). The length of the blower plates (65) is adapted to the width of the inner wall of the arc-shaped guide shroud (91). A gear ring (61) is fixedly installed at one end of the body (1) near the discharge pipe (7), and a gear disc (63) that meshes with the inner wall of the gear ring (61) is fixedly installed at one end of the connecting shaft (64). A protective cover plate (62) covering one side of the gear ring (61) is fixedly installed on the outer wall of the discharge pipe (7), and a through hole for the connecting shaft (64) to pass through is opened on the protective cover plate (62). A sealing sleeve that fits against the outer wall of the connecting shaft (64) is fixed on the inner wall of the through hole.

5. The spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to claim 4, characterized in that, The outer wall of the drive shaft (12) is fixedly equipped with stirring blades (14) that are equidistantly located in the storage chamber (11), and the stirring blades (14) are designed in the shape of a trumpet, with multiple disturbance grooves opened on each stirring blade (14).

6. The spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to claim 5, characterized in that, The self-propelled mechanism (2) includes grooves (23) evenly spaced on the outer wall of the body (1), and a cross groove (25) is provided at one end of the side frame (3). An L-shaped plate (21) is movably provided on the inner wall of the cross groove (25) and the inner wall of the groove (23). An unfolding mechanism for driving the L-shaped plate (21) to move is provided on the side frame (3). Multiple movable grooves are provided on the L-shaped plate (21), and a wheel axle (221) is rotatably connected to the inner wall of each movable groove. A self-propelled wheel (24) is fixed on the outer wall of each wheel axle (221). A transmission component for driving the self-propelled wheel (24) to rotate is provided in the output shaft of the other end of the dual-axis motor (13) and inside the L-shaped plate (21).

7. The spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to claim 6, characterized in that, The unfolding mechanism includes sliding grooves (211) evenly spaced on the inner wall of the cross groove (25), and a slider (210) is fixedly installed at one end of the L-shaped plate (21) and slidably disposed in the sliding groove (211). A forward and reverse motor (22) is fixedly installed at the middle of the other end of the side frame (3). A turntable (28) located in the side frame (3) is fixedly installed on the output shaft of the forward and reverse motor (22). A push-pull rod (29) evenly distributed is rotatably connected to one side of the turntable (28) through a pin shaft, and one end of each push-pull rod (29) is rotatably connected to one end of the slider (210) through a pin shaft.

8. The spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to claim 7, characterized in that, The transmission assembly includes a mounting frame (26) fixedly installed in the middle of the inner wall of the cross groove (25), and a first connecting hole is provided in the middle of the four sides of the mounting frame (26). The inner wall of the first connecting hole is rotatably connected to a transmission cylinder (215) through a bearing. The bottom end of the transmission cylinder (215) and the other end of the output shaft of the dual-axis motor (13) are fixedly installed with a meshing first bevel gear (218). A connecting cavity (27) is provided at the corner of the L-shaped plate (21), and a second connecting hole is provided at the bottom of the connecting cavity (27). The inner wall of the second connecting hole is rotatably connected to a transmission rod (217) inserted into the transmission cylinder (215) through a bearing. Multiple limiting grooves (219) are provided on the inner wall of the transmission rod (217). A limiting strip (220) inserted into the limiting groove (219) is fixed at the bottom of the outer wall of the transmission rod (217). A transmission shaft (213) is rotatably connected to the L-shaped plate (21), and one end of the transmission shaft (213) extends into the connecting cavity (27). A second bevel gear (216) meshing with the top end of the transmission rod (217) is fixedly installed at one end of the transmission shaft (213). Multiple worms (214) are fixedly installed on the outer wall of the transmission shaft (213), and worm wheels (212) are fixed on the outer wall of the axle (221). The worm wheels (212) mesh with the worms (214).

9. A spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to claim 8, characterized in that, A heat dissipation groove (19) is provided between the mounting groove (18) and one of the grooves (23). A handle frame (4) is fixedly installed at the other end of the side frame (3). A material injection hole is provided on one side of the top of the material storage cavity (11), and a material injection pipe (5) is fixed on the inner wall of the material injection hole. A sealing cap is provided on the material injection pipe (5).

10. A spraying device for preventing uneven thickness of the anti-corrosion layer of the flue gas duct elastomer according to claim 9, characterized in that, The bottom sides of the body (1) are provided with equipment cavities (20), and the inner wall of the equipment cavity (20) is fixedly installed with a controller (30) and a storage battery (40). The equipment cavity (20) is also fixedly installed with a remote control unit, and the remote control unit is electrically connected to the controller (30). The remote control unit is equipped with a matching external remote control device. The remote control unit is used to receive the control command sent by the external remote control device and transmit the control command to the controller (30). The controller (30) controls the working status of the self-propelled mechanism (2), the switch valve (10) and the dual-axis motor (13) respectively, so as to realize the remote control of the device after it enters the flue. The storage battery (40) provides power support for the remote control unit, the controller (30) and all electrical components of the device.

Images