Pipeline anti-corrosion coating device of water conservancy pump station

Abstract

The invention relates to the field of pipeline anti-corrosion coating, in particular to a pipeline anti-corrosion coating device of a water conservancy pump station, and solves the problems that in the prior art, when anti-corrosion coating is conducted on a pipeline, the operation continuity is poor, anti-corrosion liquid cannot be quantitatively sprayed, and a plurality of electric appliance elements need to participate in. A vertical plate and two placement plates are fixedly connected to the upper surface of the bottom plate, a pipeline is fixedly mounted between the two placement plates, a stand column is fixedly connected to the left side face of the vertical plate and extends into the pipeline, a toothed plate is fixedly connected to the bottom of the stand column, and a moving cylinder is slidably connected to the outer surface of the stand column. According to the device, it can be guaranteed that the spraying amount of preservative liquid on the inner wall of each section of pipeline is constant, material waste is avoided, the synchronous action of rotary coating, quantitative spraying and moving cylinder pushing can be achieved only through one motor, and therefore the number of times of starting and stopping of the device can be reduced, the coating continuity is remarkably improved, and then the coating efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline anti-corrosion coating, and particularly relates to a pipeline anti-corrosion coating device for a water conservancy pumping station. Background Art

[0002] As a core facility for water resource allocation, flood control and drainage, and agricultural irrigation, the safety and durability of the pipeline system of a water conservancy pumping station directly affect the operation efficiency and maintenance cost of the pumping station. As a key component responsible for water conveyance in the pumping station, the pipeline is in a complex hydraulic, chemical, and physical environment for a long time. Especially, the inner wall of the pipeline is in direct contact with the conveying medium and faces a serious corrosion risk. Therefore, the anti-corrosion coating technology for the inner wall of the pipeline has become an important means to ensure the long-term stable operation of water conservancy facilities.

[0003] Currently, when anti-corrosion coating is applied to the inner wall of a pipeline, most of the time, the anti-corrosion liquid is first sprayed on the inner wall of the pipeline, and then the coating plate is rotated around the inner wall of the pipeline to smear the anti-corrosion liquid evenly. After that, the coating device is driven to move forward a certain distance to coat the next section of the pipeline. The entire coating process not only requires frequent starting and stopping of the device, resulting in poor job continuity and affecting the coating efficiency, but also cannot quantitatively spray the anti-corrosion liquid, thus easily causing waste of the anti-corrosion liquid. Moreover, the coating process requires multiple electrical components to participate, with a high failure rate and great difficulty in later maintenance.

[0004] Therefore, the present invention provides a pipeline anti-corrosion coating device for a water conservancy pumping station to solve the above problems. Summary of the Invention

[0005] In view of the above situation, to overcome the deficiencies of the prior art, the present invention provides a pipeline anti-corrosion coating device for a water conservancy pumping station to solve the problems of poor job continuity, inability to quantitatively spray the anti-corrosion liquid, and the need for multiple electrical components to participate, with a high failure rate and great difficulty in later maintenance when applying anti-corrosion coating to the pipeline in the prior art.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: A pipeline anti-corrosion coating device for a water conservancy pumping station includes a bottom plate. A vertical plate and two placement plates are fixedly connected to the upper surface of the bottom plate. A pipeline is fixedly installed between the two placement plates. A column is fixedly connected to the left side surface of the vertical plate, and the column extends into the interior of the pipeline. A toothed plate is fixedly connected to the bottom of the column. A moving cylinder is slidably connected to the outer surface of the column. A reduction gearbox is fixedly embedded in the interior of the moving cylinder. An output shaft of the reduction gearbox is fixedly connected to a first transmission shaft. A semi-gear is fixedly connected to the outer surface of the first transmission shaft, and the semi-gear meshes with the toothed plate. Two second rings are fixedly connected to the outer surface of the moving cylinder, and a quantitative liquid spraying mechanism is arranged on the second rings. A first ring is rotatably installed on the outer surface of the moving cylinder, and a coating mechanism is arranged on the first ring. A driving mechanism is arranged on the moving cylinder.

[0007] Preferably, the driving mechanism includes a motor installed on the outer surface of the speed reducer, and the output end of the motor is fixedly connected to the input shaft of the speed reducer. The other end of the input shaft of the speed reducer is fixedly connected to a second transmission shaft. A third transmission shaft is rotatably installed on the first ring, and the other end of the third transmission shaft slidably penetrates one of the second rings. First bevel gears are fixedly connected to the outer surfaces of the third transmission shaft and the second transmission shaft, and the two first bevel gears are meshed with each other. A second toothed ring is fixedly connected to the outer surface of the first ring. A second gear is fixedly connected to the outer surface of the third transmission shaft, and the second gear is meshed with the second toothed ring.

[0008] Preferably, a first toothed ring and a fifth transmission shaft are rotatably installed on one of the second rings. A first gear is fixedly connected to the outer surface of the fifth transmission shaft, and the first gear is meshed with the first toothed ring. A fourth transmission shaft is fixedly connected to the intermediate shaft of the speed reducer. Second bevel gears are fixedly connected to the outer surfaces of the fourth transmission shaft and the fifth transmission shaft, and the two second bevel gears are meshed with each other.

[0009] Preferably, the liquid metering and spraying mechanism includes a connecting piece fixedly connected to the outer surface of the first toothed ring. A support plate is fixedly connected to the side of the connecting piece away from the first toothed ring. Two support blocks are fixedly connected to the upper surface of the support plate. Liquid storage cylinders are fixedly connected to the other sides of the two support blocks. Liquid spraying pipes are fixedly communicated with the sides of the two liquid storage cylinders away from the moving cylinder. Piston plates are slidably installed inside the two liquid storage cylinders. A push rod and an arc-shaped baffle are fixedly connected to the side of the piston plate away from the liquid spraying pipe, and the other ends of the push rod and the other side of the arc-shaped baffle slidably penetrate the liquid storage cylinders.

[0010] Preferably, moving plates are fixedly connected to the outer surfaces of the two push rods. Circular holes are formed inside the two support blocks. Springs are fixedly connected to the inside of the two circular holes, and the other ends of the springs are fixedly connected to the moving plates.

[0011] Preferably, liquid adding tanks are arranged above and below the support plate. Liquid adding pipes are fixedly communicated with the sides of the two liquid adding tanks away from each other. Pipe caps are threadedly connected to the outer surfaces of the two liquid adding pipes. A first liquid guiding pipe is fixedly communicated with the side of the upper liquid adding tank close to the support plate, and the other end of the first liquid guiding pipe is fixedly communicated with the inside of the liquid storage cylinder. A second liquid guiding pipe is fixedly communicated with the side of the lower liquid adding tank close to the support plate, and the other end of the second liquid guiding pipe sequentially penetrates the support plate and the support block and is fixedly communicated with the inside of the liquid storage cylinder.

[0012] Preferably, annular grooves are formed inside both of the second rings. An annular plate is fixedly connected inside the annular grooves. One end of the push rod away from the piston plate is slidably connected inside the annular grooves and abuts against the annular plate. Two bosses are integrally formed on the outer surface of the annular plate.

[0013] Preferably, the coating mechanism includes an electric telescopic rod fixedly installed on the outer surface of the first ring. The telescopic end of the electric telescopic rod is fixedly installed with a coating plate.

[0014] Preferably, a coating layer is provided on the surface of the coating plate away from the electric telescopic rod, and the coating layer is in contact with the inner wall of the pipeline.

[0015] Preferably, a guide plate is fixedly connected inside the moving cylinder. The other side of the guide plate is slidably inserted inside the column.

[0016] The beneficial effects of the present invention are as follows: 1. Through the cooperation among the column, the toothed plate, the moving cylinder, the reduction box, the first transmission shaft, the semi-gear, the first ring, the second ring, the driving mechanism, the coating mechanism and the quantitative liquid spraying mechanism, the present invention can not only ensure a constant spraying amount of the anti-corrosion liquid on the inner wall of each section of the pipeline, avoid material waste, but also only need to use one motor to realize the synchronous actions of rotary coating, quantitative spraying and the propulsion of the moving cylinder, so as to reduce the start-stop times of the device, significantly improve the coating coherence, and further greatly improve the coating efficiency.

[0017] 2. By setting the electric telescopic rod, the present invention can adapt to pipelines with different diameters, so as to enhance the versatility of the device and reduce the need for device replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall schematic diagram of the present invention.

[0019] Figure 2 is the cross-sectional view of the present invention.

[0020] Figure 3 is the schematic diagram of the present invention with the pipeline hidden.

[0021] Figure 4 is the schematic diagram of the moving cylinder, the coating mechanism and the driving mechanism of the present invention.

[0022] Figure 5 is the cross-sectional view of the moving cylinder, the coating mechanism and the driving mechanism of the present invention.

[0023] Figure 6 is the connection schematic diagram of the moving cylinder and the reduction box of the present invention.

[0024] Figure 7 is the connection schematic diagram of the second gear and the second toothed ring of the present invention.

[0025] Figure 8 This is a schematic diagram of the connection between the second ring and the first toothed ring of the present invention.

[0026] Figure 9 This is a schematic diagram of the connection between the first toothed ring and the first gear of the present invention.

[0027] Figure 10 For the present invention Figure 1 An enlarged schematic diagram of the structure at position A in the present invention.

[0028] In the figure: 1, bottom plate; 2, placing plate; 3, vertical plate; 4, column; 5, toothed plate; 6, moving cylinder; 7, guide plate; 8, reduction box; 9, first transmission shaft; 10, semi-gear; 11, first ring; 12, second ring; 13, first toothed ring; 14, connecting piece; 15, support plate; 16, support block; 17, liquid storage cylinder; 18, liquid adding tank; 19, liquid adding pipe; 20, first liquid guide pipe; 21, second liquid guide pipe; 22, liquid spraying pipe; 23, piston plate; 24, push rod; 25, spring; 26, moving plate; 27, arc-shaped baffle; 28, annular groove; 29, annular plate; 30, boss; 31, motor; 32, second transmission shaft; 33, third transmission shaft; 34, first bevel gear; 35, fourth transmission shaft; 36, fifth transmission shaft; 37, second bevel gear; 38, first gear; 39, second gear; 40, second toothed ring; 41, electric telescopic rod; 42, coating plate; 43, coating layer. Specific embodiments

[0029] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0030] As shown in the Figures 1-10 drawing, a pipeline anti-corrosion coating device for a water conservancy pumping station includes a bottom plate 1. A vertical plate 3 and two placing plates 2 are fixedly connected to the upper surface of the bottom plate 1. A pipeline is fixedly installed between the two placing plates 2. The vertical plate 3 is located on the right side of the two placing plates 2. Placing grooves adapted to the pipeline are provided on both of the two placing plates 2. Clamping mechanisms can be provided on both of the two placing plates 2 to clamp and fix the pipeline.

[0031] A column 4 is fixedly connected to the left side surface of the vertical plate 3, and the column 4 extends into the interior of the pipeline. A toothed plate 5 is fixedly connected to the bottom of the column 4. A moving cylinder 6 is slidably connected to the outer surface of the column 4. A guide plate 7 is fixedly connected to the interior of the moving cylinder 6. The other side of the guide plate 7 is slidably inserted into the interior of the column 4. A guide groove for the horizontal sliding of the guide plate 7 is provided in the interior of the column 4. Through the cooperation between the guide plate 7 and the guide groove, the stability of the sliding of the moving cylinder 6 can be ensured.

[0032] Inside the moving cylinder 6, a reduction gearbox 8 is fixedly embedded. The output shaft of the reduction gearbox 8 is fixedly connected to a first transmission shaft 9. A half gear 10 is fixedly connected to the outer surface of the first transmission shaft 9, and the half gear 10 meshes with the toothed plate 5. The reduction gearbox 8 is a commonly used device in mechanical transmission, mainly used to reduce the rotational speed and increase the torque. The reduction gearbox 8 mainly consists of an input shaft, an output shaft, an intermediate shaft, and transmission gears fixedly installed on the outer surface of the fixed installation shaft. When the input shaft of the reduction gearbox 8 rotates, through multiple-stage reduction, it can drive the output shaft to rotate. The rotation of the output shaft can drive the first transmission shaft 9 and the half gear 10 to rotate. After the half gear 10 rotates to mesh with the toothed plate 5, it can drive the moving cylinder 6 to move horizontally along the column 4.

[0033] Two second rings 12 are fixedly connected to the outer surface of the moving cylinder 6. A first ring 11 is rotatably installed on the outer surface of the moving cylinder 6. The first ring 11 is located on the right side of the two second rings 12. A driving mechanism is provided on the moving cylinder 6. The driving mechanism includes a motor 31 installed on the outer surface of the reduction gearbox 8, and the output end of the motor 31 is fixedly connected to the input shaft of the reduction gearbox 8. The other end of the input shaft of the reduction gearbox 8 is fixedly connected to a second transmission shaft 32. A third transmission shaft 33 is rotatably installed on the first ring 11, and the other end of the third transmission shaft 33 slidably penetrates through one of the second rings 12. First bevel gears 34 are fixedly connected to the outer surfaces of the third transmission shaft 33 and the second transmission shaft 32, and the two first bevel gears 34 mesh with each other. A second toothed ring 40 is fixedly connected to the outer surface of the first ring 11. A second gear 39 is fixedly connected to the outer surface of the third transmission shaft 33, and the second gear 39 meshes with the second toothed ring 40. When the motor 31 is started, the motor 31 can drive the input shaft of the reduction gearbox 8 to rotate. The rotation of the input shaft of the reduction gearbox 8 can drive the second transmission shaft 32 to rotate. The rotation of the second transmission shaft 32 can drive the third transmission shaft 33 and the second gear 39 to rotate. The rotation of the second gear 39 can drive the second toothed ring 40 and the first ring 11 to rotate.

[0034] A first toothed ring 13 and a fifth transmission shaft 36 are rotatably installed on one of the second rings 12. A first gear 38 is fixedly connected to the outer surface of the fifth transmission shaft 36, and the first gear 38 meshes with the first toothed ring 13. A fourth transmission shaft 35 is fixedly connected to the intermediate shaft of the reduction gearbox 8. Second bevel gears 37 are fixedly connected to the outer surfaces of the fourth transmission shaft 35 and the fifth transmission shaft 36, and the two second bevel gears 37 mesh with each other. The rotation of the input shaft of the reduction gearbox 8 can drive the intermediate shaft to rotate at a reduced speed. The rotation of the intermediate shaft can drive the fourth transmission shaft 35, the fifth transmission shaft 36, and the first gear 38 to rotate. The rotation of the first gear 38 can drive the first toothed ring 13 to rotate. By controlling the number and type of transmission gears inside the reduction gearbox 8, the rotational speeds of the first ring 11, the first toothed ring 13, and the half gear 10 can be controlled so that when the first ring 11 rotates three circles, the half gear 10 and the first toothed ring 13 both rotate one circle.

[0035] A liquid metering and spraying mechanism is provided on the second ring 12. The liquid metering and spraying mechanism includes a connecting member 14 fixedly connected to the outer surface of the first toothed ring 13. On the side of the connecting member 14 away from the first toothed ring 13, a support plate 15 is fixedly connected. On the upper surface of the support plate 15, two support blocks 16 are fixedly connected. On the other side of each of the two support blocks 16, a liquid storage cylinder 17 is fixedly connected. On the side of each of the two liquid storage cylinders 17 away from the moving cylinder 6, a liquid spraying pipe 22 is fixedly communicated. Inside each of the two liquid storage cylinders 17, a piston plate 23 is slidably installed. On the side of the piston plate 23 away from the liquid spraying pipe 22, a push rod 24 and an arc-shaped baffle 27 are fixedly connected. The other end of the push rod 24 and the other side of the arc-shaped baffle 27 both slidably penetrate through the liquid storage cylinder 17. When the push rod 24 and the piston plate 23 move towards the liquid spraying pipe 22, the anticorrosive liquid inside the first toothed ring 13 can be extruded. By providing the arc-shaped baffle 27, when the piston plate 23 moves, the first liquid guiding pipe 20 and the second liquid guiding pipe 21 can be blocked to prevent further discharging of the material.

[0036] On the outer surface of each of the two push rods 24, a moving plate 26 is fixedly connected. Inside each of the two support blocks 16, a circular hole is formed. Inside each of the two circular holes, a spring 25 is fixedly connected, and the other end of the spring 25 is fixedly connected to the moving plate 26. When the piston plate 23 contacts the side wall of the liquid storage cylinder 17 close to the moving cylinder 6, the spring 25 is in a positive state. During the process of the piston plate 23 and the push rod 24 moving towards the liquid spraying pipe 22, the spring 25 will be compressed.

[0037] Above and below the support plate 15, liquid adding boxes 18 are provided. On the side of each of the two liquid adding boxes 18 away from each other, a liquid adding pipe 19 is fixedly communicated. On the outer surface of each of the two liquid adding pipes 19, a pipe cap is threadedly connected. On the side of the upper liquid adding box 18 close to the support plate 15, a first liquid guiding pipe 20 is fixedly communicated, and the other end of the first liquid guiding pipe 20 is fixedly communicated inside the liquid storage cylinder 17. On the side of the lower liquid adding box 18 close to the support plate 15, a second liquid guiding pipe 21 is fixedly communicated, and the other end of the second liquid guiding pipe 21 sequentially penetrates through the support plate 15 and the support block 16 and is fixedly communicated inside the liquid storage cylinder 17. Between the upper liquid adding box 18 and the support plate 15, they are fixed by a connecting plate. On the side of the lower liquid adding box 18 opposite to the support plate 15, they are fixedly connected. By providing the two liquid adding boxes 18, when the liquid storage cylinder 17 rotates to both sides of the support block 16, the anticorrosive liquid can be automatically replenished. One-way valves are installed on both the first liquid guiding pipe 20 and the second liquid guiding pipe 21 to prevent the anticorrosive liquid inside the liquid storage cylinder 17 from flowing back into the liquid adding box 18. The one-way valve is preferably a springless ball valve to reduce the dependence on fluid pressure.

[0038] An annular groove 28 is provided inside each of the two second rings 12. An annular plate 29 is fixedly connected inside the annular groove 28. One end of the push rod 24 away from the piston plate 23 is slidably connected inside the annular groove 28 and abuts against the annular plate 29. Two bosses 30 are integrally formed on the outer surface of the annular plate 29. The rotation of the first toothed ring 13 can drive the liquid storage cylinder 17 and the push rod 24 to rotate. When the push rod 24 rotates to the position of the boss 30, the boss 30 will squeeze the push rod 24 to move towards the liquid spraying pipe 22, so as to extrude the anticorrosive liquid inside the liquid storage cylinder 17 and spray it on the inner wall of the pipeline. When the liquid storage cylinder 17 rotates half a circle, the anticorrosive liquid will be sprayed twice. During this process, the half gear 10 is not engaged with the toothed plate 5, and the moving cylinder 6 will not move. After half a circle, the half gear 10 will rotate to be engaged with the toothed plate 5, so as to control the forward sliding of the moving cylinder 6, thus avoiding the spraying of the anticorrosive liquid by the liquid storage cylinder 17 during the movement of the moving cylinder 6.

[0039] A coating mechanism is arranged on the first ring 11. The coating mechanism includes an electric telescopic rod 41 fixedly installed on the outer surface of the first ring 11. The telescopic end of the electric telescopic rod 41 is fixedly installed with a coating plate 42. A coating layer 43 is arranged on the side of the coating plate 42 away from the electric telescopic rod 41, and the coating layer 43 is in contact with the inner wall of the pipeline. By arranging the electric telescopic rod 41, the distance between the coating plate 42 and the moving cylinder 6 can be controlled, so as to adapt to pipelines of different models. The rotation of the first ring 11 can drive the coating plate 42 and the coating layer 43 to rotate, and the rotation of the coating plate 42 and the coating layer 43 can evenly smear the anticorrosive liquid sprayed on the inner wall of the pipeline.

[0040] Working principle: When anti-corrosion coating is applied to the inner wall of the pipeline, first place the pipeline on the two placing plates 2 and fix the pipeline. Then start the motor 31. The power is transmitted from the input shaft of the speed reducer 8 to the second transmission shaft 32, and the third transmission shaft 33 is driven to rotate by the first bevel gear 34. The rotation of the third transmission shaft 33 can drive the second gear 39, the second toothed ring 40 to rotate and the first ring 11 to rotate at a constant speed. At the same time, the first toothed ring 13 rotates with the intermediate shaft of the speed reducer 8, driving the support plate 15 and the liquid storage cylinder 17 to rotate. One end of the push rod 24 periodically squeezes the boss 30 on the annular plate 29, thereby pushing the piston plate 23 to compress the spring 25, and accurately spraying the anticorrosive liquid in the liquid storage cylinder 17 through the liquid spraying pipe 22. When the liquid storage cylinder 17 rotates away from the boss 30, the spring 25 resets, and the liquid adding tank 18 replenishes the anticorrosive liquid to the liquid storage cylinder 17 to complete the spraying cycle. When the first ring 11 rotates, the coating plate 42 rotates circumferentially with the first ring 11, evenly scraping the sprayed anticorrosive liquid to form a dense anticorrosive film. At the same time, the output shaft of the speed reducer 8 drives the first transmission shaft 9 to drive the half gear 10 to rotate. When the half gear 10 is engaged with the toothed plate 5, it pushes the moving cylinder 6 to move forward step by step along the column 4 to realize the switching of the coating section.

[0041] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0042] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0043] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A pipeline anti-corrosion coating device for a water conservancy pumping station, comprising a bottom plate (1), characterized in that, The upper surface of the bottom plate (1) is fixedly connected with a vertical plate (3) and two placing plates (2). A pipeline is fixedly installed between the two placing plates (2). The left side surface of the vertical plate (3) is fixedly connected with a column (4), and the column (4) extends into the interior of the pipeline. The bottom of the column (4) is fixedly connected with a toothed plate (5). The outer surface of the column (4) is slidably connected with a moving cylinder (6). A reduction gearbox (8) is fixedly embedded in the interior of the moving cylinder (6). The output shaft of the reduction gearbox (8) is fixedly connected with a first transmission shaft (9). A half gear (10) is fixedly connected to the outer surface of the first transmission shaft (9), and the half gear (10) meshes with the toothed plate (5). Two second rings (12) are fixedly connected to the outer surface of the moving cylinder (6). A liquid metering spraying mechanism is arranged on the second ring (12). A first ring (11) is rotatably installed on the outer surface of the moving cylinder (6). A coating mechanism is arranged on the first ring (11). A driving mechanism is arranged on the moving cylinder (6).

2. The pipeline anti-corrosion coating device of a water conservancy pumping station according to claim 1, characterized in that, The driving mechanism includes a motor (31) installed on the outer surface of the reduction gearbox (8), and the output end of the motor (31) is fixedly connected with the input shaft of the reduction gearbox (8). The other end of the input shaft of the reduction gearbox (8) is fixedly connected with a second transmission shaft (32). A third transmission shaft (33) is rotatably installed on the first ring (11), and the other end of the third transmission shaft (33) slidably penetrates through one of the second rings (12). First bevel gears (34) are fixedly connected to the outer surfaces of the third transmission shaft (33) and the second transmission shaft (32). The two first bevel gears (34) mesh with each other. A second toothed ring (40) is fixedly connected to the outer surface of the first ring (11). A second gear (39) is fixedly connected to the outer surface of the third transmission shaft (33), and the second gear (39) meshes with the second toothed ring (40).

3. The pipeline anti-corrosion coating device for a water conservancy pumping station according to claim 2, characterized in that, A first toothed ring (13) and a fifth transmission shaft (36) are rotatably installed on one of the second rings (12). A first gear (38) is fixedly connected to the outer surface of the fifth transmission shaft (36), and the first gear (38) meshes with the first toothed ring (13). The intermediate shaft of the reduction gearbox (8) is fixedly connected with a fourth transmission shaft (35). Second bevel gears (37) are fixedly connected to the outer surfaces of the fourth transmission shaft (35) and the fifth transmission shaft (36). The two second bevel gears (37) mesh with each other.

4. The pipeline anti-corrosion coating device of a water conservancy pumping station according to claim 3, characterized in that, The liquid metering and spraying mechanism includes a connecting member (14) fixedly connected to the outer surface of the first toothed ring (13). On the side of the connecting member (14) away from the first toothed ring (13), a support plate (15) is fixedly connected. On the upper surface of the support plate (15), two support blocks (16) are fixedly connected. On the other side of the two support blocks (16), liquid storage cylinders (17) are fixedly connected. On the side of the two liquid storage cylinders (17) away from the moving cylinder (6), liquid spraying pipes (22) are fixedly communicated. Inside the two liquid storage cylinders (17), piston plates (23) are slidably installed. On the side of the piston plate (23) away from the liquid spraying pipe (22), a push rod (24) and an arc-shaped baffle (27) are fixedly connected, and the other end of the push rod (24) and the other side of the arc-shaped baffle (27) both slidably penetrate through the liquid storage cylinder (17).

5. The pipeline anti-corrosion coating device of a water conservancy pumping station according to claim 4, characterized in that, On the outer surface of the two push rods (24), moving plates (26) are fixedly connected. Inside the two support blocks (16), circular holes are formed. Inside the two circular holes, springs (25) are fixedly connected, and the other end of the spring (25) is fixedly connected to the moving plate (26).

6. The pipeline anti-corrosion coating device for a water conservancy pumping station according to claim 4, characterized in that, Above and below the support plate (15), liquid adding tanks (18) are provided. On the side of the two liquid adding tanks (18) away from each other, liquid adding pipes (19) are fixedly communicated. On the outer surface of the two liquid adding pipes (19), pipe caps are threadedly connected. On the side of the upper liquid adding tank (18) close to the support plate (15), a first liquid guiding pipe (20) is fixedly communicated, and the other end of the first liquid guiding pipe (20) is fixedly communicated inside the liquid storage cylinder (17). On the side of the lower liquid adding tank (18) close to the support plate (15), a second liquid guiding pipe (21) is fixedly communicated, and the other end of the second liquid guiding pipe (21) sequentially penetrates through the support plate (15) and the support block (16) and is fixedly communicated inside the liquid storage cylinder (17).

7. The pipeline anti-corrosion coating device of a water conservancy pumping station according to claim 4, characterized in that, Inside the two second toothed rings (12), annular grooves (28) are formed. Inside the annular grooves (28), annular plates (29) are fixedly connected. The end of the push rod (24) away from the piston plate (23) is slidably connected inside the annular groove (28) and abuts against the annular plate (29). On the outer surface of the annular plate (29), two bosses (30) are integrally formed.

8. The pipeline anti-corrosion coating device of a water conservancy pumping station according to claim 1, characterized in that, The coating mechanism includes an electric telescopic rod (41) fixedly installed on the outer surface of the first toothed ring (11). The telescopic end of the electric telescopic rod (41) is fixedly installed with a coating plate (42).

9. The pipeline anti-corrosion coating device of a water conservancy pumping station according to claim 8, characterized in that, On the side of the coating plate (42) away from the electric telescopic rod (41), a coating layer (43) is provided, and the coating layer (43) is in contact with the inner wall of the pipeline.

10. The pipeline anti-corrosion coating device of a water conservancy pumping station according to claim 1, characterized in that, Inside the moving cylinder (6), a guide plate (7) is fixedly connected. The other side of the guide plate (7) is slidably inserted inside the column (4).

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