Spraying repairing device for inner wall of pipeline
By designing components that ensure stable installation and uniform coating, the problems of instability and uneven coating in existing pipe inner wall spraying devices have been solved, achieving stability and uniformity in pipe inner wall spraying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU RONGYIZHEN ENVIRONMENTAL TECH CO LTD
- Filing Date
- 2025-03-28
- Publication Date
- 2026-04-17
AI Technical Summary
Existing pipe wall spraying repair devices are not easy to install stably inside pipes, cannot evenly apply repair materials, and cannot prevent pipes from shifting during the spraying process.
The device is designed with components including a base, a first threaded rod, a lateral adjustment mechanism, a spray pipe, a longitudinal adjustment mechanism, and a clamping mechanism. Stable installation and uniform spraying are achieved through threaded connections and motor drive. A protective shell and a coating rod ensure uniform coating, while a fixing frame and bolts prevent pipe misalignment.
Stable installation of the pipe inner wall spraying device was achieved, ensuring uniform application of repair material, preventing pipe displacement during spraying, and improving spraying quality.
Smart Images

Figure CN224127608U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pipeline inner wall spraying repair device, specifically a pipeline inner wall spraying repair device. Background Technology
[0002] Pipelines include drainage pipes, positive pressure air ducts, etc., which mainly use various metal pipes. Their corrosion protection is mainly achieved by brushing coatings or special anti-corrosion treatment of key components. In particular, for some pipes with corrosion on the inner wall after use, it is necessary to repair the inner wall of the pipe by spraying paint. However, the existing repair devices can only spray paint on the inside of the pipe, resulting in uneven paint application. To avoid this, a pipe inner wall spraying repair device with a uniform coating mechanism has been designed.
[0003] A pipe inner wall spraying repair device, authorized by announcement number CN219804856U, includes a base. A transmission frame that moves along the base's length is movably mounted on the base, and a pipe-through rod is mounted on the transmission frame. A paint spray tube passes through the pipe-through rod, and a paint spray head is rotatably connected to the end of the paint spray tube. A grinding component that extends and retracts radially along the pipe-through rod is mounted on the pipe-through rod. A rotating component drives the paint spray head and the grinding component to rotate. In this invention, the retractable grinding component allows the device to be subjected to centrifugal force as it rotates with the paint spray head. This causes the grinding component to extend and contact the inner wall of the pipe, achieving an elastic scraping and grinding effect. This improves the cleanliness and smoothness of the inner wall, thereby enhancing the uniformity of subsequent paint spraying and improving the quality of the pipe inner wall spraying repair.
[0004] Based on existing solutions and actual production and processing, current pipe inner wall spraying repair devices still have some problems: it is not convenient to stably install the pipe repair device inside the pipe, it is not convenient to evenly apply the repair material sprayed on the inner wall of the pipe, it is not convenient to clamp and fix the repaired pipe, and it cannot prevent displacement. Therefore, this utility model provides a pipe inner wall spraying repair device to solve the above-mentioned problems. Utility Model Content
[0005] The purpose of this utility model is to provide a pipe inner wall spraying repair device to solve the problems mentioned in the background art, such as the inconvenience of stably installing the pipe repair device inside the pipe, the inconvenience of evenly applying the repair material sprayed on the inner wall of the pipe, the inconvenience of clamping and fixing the repaired pipe, and the inability to prevent displacement.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a pipe inner wall spraying repair device, comprising: a base for installation, a first threaded rod stably installed inside the base, and a fixing frame installed on the upper end of the base;
[0007] It also includes: a lateral adjustment mechanism is provided on the first threaded rod, wherein the lateral adjustment mechanism includes a support frame and a fixed rod, the support frame is connected to the outer side of the middle part of the first threaded rod, and the fixed rod is connected to the front and rear ends of the support frame;
[0008] A spraying pipe, wherein a longitudinal adjustment mechanism is provided at the upper end of the spraying pipe, the longitudinal adjustment mechanism including a bidirectional threaded rod, a first connecting block and a connecting rod, the outer side of the bidirectional threaded rod is connected to the first connecting block, and the upper end of the first connecting block is connected to the connecting rod;
[0009] A connecting arc ring is provided, the upper end of which is provided with a clamping mechanism, wherein the clamping mechanism includes a second threaded rod and a bolt, the upper end of which is provided with a second threaded rod, and the rear end of which is provided with a bolt.
[0010] Preferably, the outer side of the first threaded rod is connected to the support frame by a thread, and the support frame forms a sliding structure on the outer side of the fixed rod, and a spray pipe is provided at the upper end of the support frame.
[0011] Preferably, the outer side of the bidirectional threaded rod is connected to the first connecting block and the second connecting block by means of threads, and the second connecting block is connected to the right end of the bidirectional threaded rod. The upper ends of the first connecting block and the second connecting block are rotatably connected to connecting rods, and the upper ends of the connecting rods are connected to wheel frames.
[0012] Preferably, the right end of the spray tube is provided with a nozzle and a protective shell, and the protective shell is located to the right of the nozzle. The protective shell is provided with a first spring and a coating rod inside, and the coating rod is located at the upper end of the first spring.
[0013] Preferably, the upper end of the first spring is fitted with the applicator rod, and the applicator rod forms a sliding structure inside the protective shell, and the first spring and the applicator rod are symmetrically arranged about the center line of the protective shell.
[0014] Preferably, the upper end of the fixing frame is rotatably connected to a connecting arc ring, and the upper end of the connecting arc ring is threadedly connected to a second threaded rod, and a bolt is provided at the rear end of the connecting arc ring.
[0015] Preferably, a second spring is fitted to the outer side of the bolt, and a connecting groove is connected to the lower end of the bolt, with the connecting groove located on the upper rear end of the fixing frame.
[0016] Compared with the prior art, the beneficial effects of this utility model are: the pipe inner wall spraying repair device is convenient to install the pipe repair device stably inside the pipe, convenient to evenly apply the repair material sprayed on the inner wall of the pipe, and convenient to clamp and fix the repaired pipe to prevent displacement.
[0017] 1. Equipped with a bidirectional threaded rod, a first connecting block, and a wheel frame, when the spray pipe drives the nozzle to spray material inside the pipe, in order to avoid slippage caused by external factors and uneven internal spraying, the second motor is started to drive the bidirectional threaded rod to rotate. The bidirectional threaded rod drives the first and second connecting blocks to move towards the center, driving the connecting rod to rotate upward, so that the connecting rod drives the wheel frame to fit against the inner wall of the pipe, thereby stabilizing the position of the repair device inside the pipe and facilitating the stable installation of the pipe repair device inside the pipe.
[0018] 2. Equipped with a protective shell, a first spring, and an applicator rod, when it is necessary to evenly apply the paint sprayed inside the pipe, the protective shell drives the applicator rod inside the pipe. The applicator rod is attached to the inner wall of the pipe by the first spring. The first spring itself has strong elasticity, which makes it tightly attached to the inner wall. The protective shell is rotated by the nozzle. The electric device inside the nozzle drives the protective shell to rotate, which can drive the applicator rod to evenly apply the paint to the inner wall, making it easy to evenly apply the repair material sprayed on the inner wall of the pipe.
[0019] 3. Equipped with a fixed frame, connecting arc ring, and second threaded rod, when spraying repairs are needed on the pipeline, first fix the pipeline in position to prevent movement during spraying. Place the pipeline on the upper end of the fixed frame, rotate the connecting arc ring to drive the second threaded rod to engage with the upper end of the pipeline. At this time, rotate the bolt downwards so that the lower end of the bolt connects to the connecting groove to fix the position of the connecting arc ring. Then, according to the size of the pipeline, rotate the second threaded rod downwards to stabilize the pipeline in position, making it easy to clamp and fix the repaired pipeline to prevent displacement. Attached Figure Description
[0020] Figure 1 This is a frontal cross-sectional view of the present invention.
[0021] Figure 2 This is a side view sectional structural diagram of the present invention;
[0022] Figure 3 This is a top view sectional structural diagram of the present invention;
[0023] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle;
[0024] Figure 5 This utility model Figure 2 Enlarged structural diagram at point B.
[0025] In the diagram: 1. Base; 2. First threaded rod; 3. First motor; 4. Support frame; 5. Fixing rod; 6. Spray pipe; 7. Bidirectional threaded rod; 8. Second motor; 9. First connecting block; 10. Second connecting block; 11. Connecting rod; 12. Wheel frame; 13. Spray head; 14. Protective shell; 15. First spring; 16. Spraying rod; 17. Fixing frame; 18. Connecting arc ring; 19. Second threaded rod; 20. Bolt; 21. Second spring; 22. Connecting groove. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figure 1-5 This utility model provides a technical solution: a pipe inner wall spraying repair device, including a base 1, a first threaded rod 2, a first motor 3, a support frame 4, a fixing rod 5, a spraying pipe 6, a bidirectional threaded rod 7, a second motor 8, a first connecting block 9, a second connecting block 10, a connecting rod 11, a wheel frame 12, a spray head 13, a protective shell 14, a first spring 15, a coating rod 16, a fixing frame 17, a connecting arc ring 18, a second threaded rod 19, a bolt 20, a second spring 21, and a connecting groove 22.
[0028] When clamping and fixing the repaired pipe in position, for example, attaching... Figure 2 and attached Figure 5 As shown, a connecting arc ring 18 is rotatably connected to the upper end of the fixing frame 17. A second threaded rod 19 is threadedly connected to the upper end of the connecting arc ring 18. A bolt 20 is provided at the rear end of the connecting arc ring 18. A second spring 21 is attached to the outer side of the bolt 20. A connecting groove 22 is connected to the lower end of the bolt 20. The connecting groove 22 is located on the upper side of the rear end of the fixing frame 17. First, the pipe is placed on the upper end of the fixing frame 17. Then, the connecting arc ring 18 is rotated backward so that the connecting arc ring 18 drives the second threaded rod 19 to attach to the upper end of the pipe. When the lower side of the rear end of the connecting arc ring 18 is attached to the rear end of the fixing frame 17, the bolt 20 is pressed down to squeeze the second spring 21. At this time, the bolt 20 enters the interior of the connecting groove 22. Then, the bolt 20 is rotated to connect with the connecting groove 22, so that the connecting arc ring 18 can be fixed in position. Since the pipe still moves, the second threaded rod 19 is rotated downward to stably clamp the pipe on the upper end of the fixing frame 17, thereby achieving stable installation of the pipe.
[0029] When using a pipe inner wall spray repair device, for example, with... Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 As shown, the outer side of the bidirectional threaded rod 7 is connected to the first connecting block 9 and the second connecting block 10 by threads. The second connecting block 10 is connected to the right end of the bidirectional threaded rod 7. The upper ends of the first connecting block 9 and the second connecting block 10 are rotatably connected to the connecting rod 11. The upper end of the connecting rod 11 is connected to the wheel frame 12. The right end of the spray pipe 6 is provided with a nozzle 13 and a protective shell 14. The protective shell 14 is located to the right of the nozzle 13. The inside of the protective shell 14 is provided with a first spring 15 and an applicator rod 16. The applicator rod 16 is located above the first spring 15. Since the spray pipe 6 is in the case of penetrating inside the pipe before installation, the repair device is stabilized according to the width of the inner wall of the pipe. The second motor 8 is started to drive the bidirectional threaded rod 7 to rotate. At this time, the bidirectional threaded rod 7 The first connecting block 9 and the second connecting block 10 are moved towards the center, respectively. The first connecting block 9 and the second connecting block 10 drive the connecting rod 11 to rotate upwards until the connecting rod 11 drives the wheel frame 12 to fit against the inner wall of the pipe. Then, the spraying material pipe can be connected to the right end of the support frame 4. The spraying pipe 6 and the nozzle 13 are used to spray the inner wall of the pipe. At the same time, the right side of the nozzle 13 drives the protective shell 14 to rotate. The protective shell 14 drives the coating rod 16 to evenly coat the inner wall of the pipe, ensuring that the material inside the pipe is uniform and thus effectively repaired. At this time, the first motor 3 is started to drive the first threaded rod 2 to rotate. The first threaded rod 2 drives the support frame 4 to move to the left as a whole. The support frame 4 drives the spraying pipe 6 to move steadily to the left, so that the spraying repair work can be carried out on the entire inside of the pipe.
[0030] Working principle: First, place the pipe on the upper end of the fixing bracket 17. Then, flip the connecting arc ring 18 upward, causing the lower end of the second threaded rod 19 to fit against the upper end of the pipe. At this time, fix the connecting arc ring 18 in position with bolts 20. Then, rotate the second threaded rod 19 downward and press it against the upper end of the pipe. After fixing the position, since the spraying device has been inserted into the pipe before installation, and in order to ensure that the spraying device can move stably inside the pipe, start the second motor 8 to drive the bidirectional threaded rod 7 to rotate. The bidirectional threaded rod 7 then drives the connecting rod 11 to rotate upward through the first connecting block 9 and the second connecting block 10. The wheel frame 12 is aligned with the inner wall of the pipe according to the width of the inner wall. After the spraying device is fixed, the paint is connected to the spraying device, and the inner wall of the pipe is sprayed through the nozzle 13. With the rotation of the first threaded rod 2, the support frame 4 is moved to the left. The support frame 4 then uses the spraying pipe 6 to drive the nozzle 13 to move. The nozzle 13 sprays continuously, and the coating rod 16 on its right side is evenly coated with paint on the inner wall of the pipe according to the rotation of the protective shell 14. This is the whole working process of the inner wall spraying repair device of the pipe. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0031] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A pipeline interior wall spray repair device, comprising: The base (1) for installation, the first threaded rod (2) stably installed inside the base (1), and the fixing bracket (17) installed on the upper end of the base (1). Its characteristic is that it further includes: The first threaded rod (2) is provided with a lateral adjustment mechanism, which includes a support frame (4) and a fixing rod (5). The support frame (4) is connected to the outer side of the middle part of the first threaded rod (2), and the front and rear ends of the support frame (4) are connected to the fixing rod (5). The spray pipe (6) is provided with a longitudinal adjustment mechanism at its upper end. The longitudinal adjustment mechanism includes a bidirectional threaded rod (7), a first connecting block (9) and a connecting rod (11). The outer side of the bidirectional threaded rod (7) is connected to the first connecting block (9), and the upper end of the first connecting block (9) is connected to the connecting rod (11). A connecting arc ring (18) is provided with a clamping mechanism at its upper end. The clamping mechanism includes a second threaded rod (19) and a bolt (20). The connecting arc ring (18) is provided with a second threaded rod (19) at its upper end and a bolt (20) at its rear end.
2. A pipeline interior wall spraying repair device according to claim 1, characterized in that: The outer side of the first threaded rod (2) is connected to the support frame (4) by a threaded connection, and the support frame (4) forms a sliding structure on the outer side of the fixed rod (5), and a spray pipe (6) is provided at the upper end of the support frame (4).
3. A pipeline interior wall spraying repair device according to claim 1, characterized in that: The outer side of the bidirectional threaded rod (7) is connected to the first connecting block (9) and the second connecting block (10) by means of threads. The second connecting block (10) is connected to the right end of the bidirectional threaded rod (7). The upper ends of the first connecting block (9) and the second connecting block (10) are rotatably connected to a connecting rod (11), and the upper end of the connecting rod (11) is connected to a wheel frame (12).
4. A pipeline interior wall spraying repair device according to claim 1, characterized in that: The right end of the spray tube (6) is provided with a nozzle (13) and a protective shell (14), and the protective shell (14) is located to the right of the nozzle (13). The protective shell (14) is provided with a first spring (15) and a smearing rod (16), and the smearing rod (16) is located at the upper end of the first spring (15).
5. A pipeline interior wall spray repair device according to claim 4, wherein: The upper end of the first spring (15) is fitted with the applicator (16), and the applicator (16) forms a sliding structure inside the protective shell (14). The first spring (15) and the applicator (16) are symmetrically arranged about the center line of the protective shell (14).
6. A pipe interior wall spraying repair device according to claim 1, characterized in that: The upper end of the fixed frame (17) is rotatably connected to a connecting arc ring (18), and the upper end of the connecting arc ring (18) is threadedly connected to a second threaded rod (19), and a bolt (20) is provided at the rear end of the connecting arc ring (18).
7. A pipeline interior wall spray repair device according to claim 6, wherein: A second spring (21) is fitted to the outside of the bolt (20), and a connecting groove (22) is connected to the lower end of the bolt (20), and the connecting groove (22) is located on the upper rear end of the fixing frame (17).
Citation Information
Patent Citations
Spraying repairing device for inner wall of pipeline
CN219804856U