Oil pipe lining anti-corrosion layer spraying equipment

By designing an anti-corrosion coating spraying equipment for oil pipe linings, and utilizing a gear system and an adjustable inner sleeve rod, the problems of coating uniformity and integrity were solved, achieving efficient and uniform spraying results and improving the anti-corrosion performance and service life of the oil pipes.

CN224167782UActive Publication Date: 2026-04-28DONGYING HONGDE PETROLEUM EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGYING HONGDE PETROLEUM EQUIP CO LTD
Filing Date
2025-04-25
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing oil pipe corrosion protection technologies cannot guarantee the uniformity and integrity of the coating, especially on oil pipes of different diameters, where efficient and uniform spraying is difficult to achieve, resulting in poor corrosion protection and affecting the service life of the oil pipes.

Method used

A coating device for the anti-corrosion coating of oil pipe lining was designed. The device uses a drive motor to drive a gear system and a rotating cylinder to rotate the spray pipe and spray head. Combined with an adjustable inner sleeve rod and abutment block, the device is securely installed on oil pipes of different inner diameters and can achieve all-round spraying.

Benefits of technology

It achieves uniform spraying of the inner wall of the oil pipe, improves spraying speed and efficiency, ensures the stability and reliability of spraying quality, enhances the versatility and practicality of the equipment, and saves manpower and material resources.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224167782U_ABST
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Abstract

The utility model discloses oil pipe lining anticorrosive coating spraying equipment which comprises a mounting base and a spraying pipe, a circular through groove is formed in the mounting base, two outer sleeve frames are symmetrically and fixedly mounted on the outer side of the mounting base, inner sleeve rods are slidably mounted in the outer sleeve frames, and abutting blocks are fixedly mounted at one ends of the inner sleeve rods; a movable sliding groove is formed in one side of each outer sleeve frame; a driving gear can be driven to rotate through the output end of a driving motor, so that a driven gear is driven to rotate, a communicating seat is driven to rotate through a rotating cylinder, an adjusting pipe is driven to rotate through a second sleeving seat, a material spraying pipe and a material spraying head are driven to rotate, and the inner wall of an oil pipe is comprehensively sprayed; according to the oil pipe inner wall spraying device, it is guaranteed that all corners of the inner wall of an oil pipe can be evenly sprayed, the spraying speed and efficiency are greatly improved, the whole spraying process is simple and efficient, manpower and material resources are saved, and the stability and reliability of the spraying quality are guaranteed.
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Description

Technical Field

[0001] This utility model relates to the field of oil pipe manufacturing technology, specifically to an oil pipe lining anti-corrosion coating spraying equipment. Background Technology

[0002] As an indispensable key component in fluid transmission systems such as oil and natural gas, oil pipelines are in constant and prolonged contact with fluids containing various chemicals and corrosive media. These fluids often contain high concentrations of salt, acidic components, moisture, and other substances that can corrode metal materials. Over long periods of operation, these corrosive media gradually erode the pipeline walls, leading to thinning of the walls, increased surface roughness, and even the risk of perforation or leakage.

[0003] Traditional oil pipe corrosion protection mainly relies on manual brushing or the use of simple spraying equipment. While manual brushing is simple to operate, it is often difficult to ensure the uniformity and integrity of the coating in practice, resulting in poor corrosion protection in some areas and thus reducing the overall service life of the oil pipe. Although simple spraying equipment is more efficient than manual brushing, it is often difficult to accurately control the spray amount for oil pipes of different diameters, resulting in uneven spraying. Sometimes, the limitations of the nozzle can also affect the inner surface of the oil pipe, preventing the anti-corrosion coating from being effectively covered. Utility Model Content

[0004] The purpose of this invention is to provide a spraying device for anti-corrosion coating of oil pipe linings to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a spraying device for an anti-corrosion coating on an oil pipe lining, comprising a mounting base and a spraying pipe. The mounting base has a circular through groove inside. Two outer frames are symmetrically fixedly mounted on the outer side of the mounting base. An inner sleeve rod is slidably mounted inside each outer frame. An abutment block is fixedly mounted at one end of each inner sleeve rod. A sliding groove is provided on one side of each outer frame. A socket seat is fixedly mounted on one side of the mounting base. A hand grip is rotatably mounted inside the socket seat. A threaded sleeve is fixedly mounted inside the hand grip. Internal threaded rods are threadedly connected to both ends of the threaded sleeve. The internal threaded rods are located away from the threaded sleeve. Each end is fixedly equipped with a connecting plate, and a bent sliding rod is fixedly installed on one side of each connecting plate. A drive motor is fixedly installed on one side of the mounting base, and a drive gear is fixedly installed at the output end of the drive motor. Multiple spray heads are fixedly connected to the outside of the spray pipe. An adjusting pipe is fixedly connected to one end of the spray pipe. A connecting hose is fixedly connected to the end of the adjusting pipe away from the spray pipe. A connecting seat is connected to the end of the connecting hose away from the adjusting pipe. A socket seat two is fixedly installed on the top of the connecting seat. A rotating cylinder is fixedly installed on one side of the connecting seat. A driven gear is fixedly installed on the outside of the rotating cylinder. A receiving pipe is installed on the side of the connecting seat where the rotating cylinder is installed through a sealed bearing.

[0006] Preferably, the outer side of the rotating cylinder is mounted inside the circular through groove via a bearing, and the receiving pipe is located inside the rotating cylinder.

[0007] Preferably, the outer sides of the driving gear and the outer sides of the driven gear mesh with each other.

[0008] Preferably, the end of the bent slide rod away from the internal thread rod is slidably installed on the inner side of the movable slide groove on one side of the two outer frames, and the end of the bent slide rod away from the internal thread rod is fixedly connected to one side of the inner sleeve rod inside the two outer frames.

[0009] Preferably, a rubber pad is fixedly installed on the outer side of the abutment block.

[0010] Preferably, the adjusting tube is slidably installed inside the second socket, and the outer side of the second socket is threaded with a fastening bolt.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: the output end of the set drive motor can drive the active gear to rotate, thereby driving the driven gear to rotate, which in turn drives the connecting seat to rotate through the rotating cylinder, which in turn drives the adjusting tube to rotate through the second sleeve seat, which in turn drives the spray pipe and spray head to rotate, so as to spray the inner wall of the oil pipe comprehensively, ensuring that every corner of the inner wall of the oil pipe can be uniformly sprayed, and greatly improving the speed and efficiency of spraying. The whole spraying process is simple and efficient, saving manpower and material resources, and ensuring the stability and reliability of the spraying quality.

[0012] Additionally, rotating the hand-held cylinder causes the threaded sleeve to rotate, thereby distancing the two internal threaded rods from each other. This pushes the connecting plate to move, which in turn moves the inner sleeve rod inside the outer frame via the bending slide rod. This causes the contact block to come into contact with the inner wall of the oil pipe, thus fixing the device inside the oil pipe. This device is applicable to oil pipes of different inner diameters, greatly improving the versatility and practicality of the equipment. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present utility model.

[0014] Figure 2 This is a partial three-dimensional structural diagram of the present invention.

[0015] Figure 3 This is a partial appearance structural diagram of the present utility model.

[0016] In the diagram: 1. Mounting base; 2. Spray tube; 3. Driven gear; 4. Rotating cylinder; 5. Socket one; 6. Drive gear; 7. Drive motor; 8. Receiving tube; 9. Internal threaded rod; 10. Hand grip; 11. Threaded sleeve; 12. Bending slide rod; 13. Connecting plate; 14. Moving slide; 15. Inner sleeve rod; 16. Abutting block; 17. Rubber pad; 18. Spray head; 19. Connecting hose; 20. Socket two; 21. Adjusting tube; 22. Connecting seat; 23. Circular through groove; 24. Outer frame. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-3This utility model provides a technical solution: a spraying device for anti-corrosion coating of oil pipe lining, including a mounting base 1 and a spraying pipe 2. The mounting base 1 has a circular through groove 23 inside. Two outer frames 24 are symmetrically fixedly installed on the outer side of the mounting base 1. An inner sleeve rod 15 is slidably installed inside each outer frame 24. An abutment block 16 is fixedly installed at one end of each inner sleeve rod 15. A movable sliding groove 14 is opened on one side of each outer frame 24. A socket seat 5 is fixedly installed on one side of the mounting base 1. The inner side of the socket seat 5... A handgrip 10 is rotatably mounted on the part. A threaded sleeve 11 is fixedly mounted inside the handgrip 10. Both ends of the threaded sleeve 11 are threadedly connected to internally threaded rods 9. A connecting plate 13 is fixedly mounted on the end of each internally threaded rod 9 away from the threaded sleeve 11. A bent sliding rod 12 is fixedly mounted on one side of each connecting plate 13. The end of the bent sliding rod 12 away from the internally threaded rod 9 is slidably mounted inside the sliding groove 14 on one side of each of the two outer frames 24. The end of the bent sliding rod 12 away from the internally threaded rod 9 is respectively connected to the two... One side of the inner sleeve rod 15 inside the outer frame 24 is fixedly connected. A drive motor 7 is fixedly installed on one side of the mounting base 1. A drive gear 6 is fixedly installed at the output end of the drive motor 7. Multiple spray heads 18 are fixedly connected to the outside of the spray pipe 2. An adjusting pipe 21 is fixedly connected to one end of the spray pipe 2. A connecting hose 19 is fixedly connected to the end of the adjusting pipe 21 away from the spray pipe 2. A connecting seat 22 is connected to the end of the connecting hose 19 away from the adjusting pipe 21. A socket seat 20 is fixedly installed on the top of the connecting seat 22. A rotating cylinder 4 is fixedly installed on one side of the connecting seat 22. A driven gear 3 is fixedly installed on the outside of the rotating cylinder 4. The outside of the drive gear 6 and the outside of the driven gear 3 mesh. A receiving pipe 8 is installed on the side of the connecting seat 22 where the rotating cylinder 4 is installed through a sealed bearing. The outside of the rotating cylinder 4 is installed inside the circular through groove 23 through a bearing. The receiving pipe 8 is located inside the rotating cylinder 4. The adjusting pipe 21 is slidably installed inside the socket seat 20. A fastening bolt is threadedly connected to the outside of the socket seat 20.

[0019] The working principle of the above technical solution is as follows: First, the mounting base 1 can be placed inside the oil pipe. Then, the hand-held cylinder 10 is rotated to drive the threaded sleeve 11 to rotate, thereby causing the two internal threaded rods 9 to move away from each other, thus pushing the connecting plate 13 to move. This, in turn, drives the inner sleeve rod 15 to move inside the outer frame 24 through the bent sliding rod 12, so that the contact block 16 contacts the inner wall of the oil pipe, thereby fixing the device inside the oil pipe. This method is applicable to oil pipes of different inner diameters, greatly improving the versatility and practicality of the equipment. After installation, the adjusting pipe 21 can be moved upward, thereby driving the spray pipe 2 to move, so that the spray head 18 is close to the inner wall of the oil pipe. Then, the material is connected to the external feeding pipe through the receiving pipe 8 and enters the connecting base 2 through the receiving pipe 8. The material is fed into the inside of the spray pipe 2 through the connecting hose 19 and the regulating pipe 21, and then sprayed onto the inner wall of the oil pipe through the spray head 18. Then, the drive motor 7 is started, and the output end of the drive motor 7 can drive the drive gear 6 to rotate, thereby driving the driven gear 3 to rotate, which in turn drives the connecting seat 22 to rotate through the rotating cylinder 4, which in turn drives the regulating pipe 21 to rotate through the socket 20, thereby driving the spray pipe 2 and the spray head 18 to rotate, so as to spray the inner wall of the oil pipe evenly, ensuring that every corner of the inner wall of the oil pipe is uniformly sprayed, and greatly improving the speed and efficiency of spraying. The whole spraying process is simple and efficient, saving manpower and material resources, and ensuring the stability and reliability of the spraying quality.

[0020] In another implementation scheme, such as Figures 1-3 As shown, a rubber pad 17 is fixedly installed on the outer side of the contact block 16.

[0021] The rubber pad 17 can make the contact block 16 more firmly attached to the inner wall of the oil pipe.

[0022] Working principle: First, the mounting base 1 can be placed inside the oil pipe. Then, rotating the hand grip 10 drives the threaded sleeve 11 to rotate, thereby moving the two internal threaded rods 9 away from each other. This pushes the connecting plate 13 to move, which in turn moves the inner sleeve rod 15 inside the outer frame 24 through the bending slide rod 12. This causes the contact block 16 to contact the inner wall of the oil pipe, thus fixing the device inside the oil pipe. It can be used for oil pipes of different inner diameters, greatly improving the versatility and practicality of the equipment. After installation, the adjusting pipe 21 can be moved upward, thereby moving the spray pipe 2. This brings the spray head 18 closer to the inner wall of the oil pipe. Then, the material is connected to the external feeding pipe through the receiving pipe 8. The material enters the interior of the connecting base 22 through the receiving pipe 8, and then passes through the connecting hose 19 and the adjusting pipe. The material is fed into the inside of the spray tube 2 and then sprayed onto the inner wall of the oil pipe through the spray head 18. Then, the drive motor 7 is started. The output end of the drive motor 7 can drive the drive gear 6 to rotate, which in turn drives the driven gear 3 to rotate. This drives the connecting seat 22 to rotate through the rotating cylinder 4, which in turn drives the adjusting tube 21 to rotate through the sleeve seat 20. This causes the spray tube 2 and the spray head 18 to rotate, thus spraying the inner wall of the oil pipe. This ensures that every corner of the inner wall of the oil pipe is uniformly coated, and also greatly improves the speed and efficiency of the spraying. The whole spraying process is simple and efficient, saving manpower and material resources, and ensuring the stability and reliability of the spraying quality. The rubber pad 17 can make the contact block 16 more firmly in contact with the inner wall of the oil pipe.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spraying device for anti-corrosion coating of oil pipe lining, comprising a mounting base (1) and a spraying pipe (2), characterized in that: The mounting base (1) has a circular through groove (23) inside. Two outer frames (24) are symmetrically fixedly installed on the outer side of the mounting base (1). An inner sleeve rod (15) is slidably installed inside each of the outer frames (24). An abutment block (16) is fixedly installed at one end of each inner sleeve rod (15). A sliding groove (14) is opened on one side of each outer frame (24). A socket seat (5) is fixedly installed on one side of the mounting base (1). A hand grip (10) is rotatably installed inside the socket seat (5). A threaded sleeve (11) is fixedly installed inside the hand grip (10). An internal thread rod (9) is threadedly connected to both ends of the threaded sleeve (11). A connecting plate (13) is fixedly installed at the end of the internal thread rod (9) away from the threaded sleeve (11). A connecting plate (13) is fixedly installed on one side of each connecting plate (13). A bending slide rod (12) is provided. A drive motor (7) is fixedly installed on one side of the mounting base (1). An active gear (6) is fixedly installed at the output end of the drive motor (7). Multiple spray nozzles (18) are fixedly connected to the outside of the spray pipe (2). An adjusting pipe (21) is fixedly connected to one end of the spray pipe (2). A connecting hose (19) is fixedly connected to the end of the adjusting pipe (21) away from the spray pipe (2). A connecting seat (22) is connected to the end of the connecting hose (19) away from the adjusting pipe (21). A socket seat (20) is fixedly installed on the top of the connecting seat (22). A rotating cylinder (4) is fixedly installed on one side of the connecting seat (22). A driven gear (3) is fixedly installed on the outside of the rotating cylinder (4). A receiving pipe (8) is installed on the side of the connecting seat (22) where the rotating cylinder (4) is installed through a sealed bearing.

2. The oil pipe lining anti-corrosion coating spraying equipment according to claim 1, characterized in that: The outer side of the rotating cylinder (4) is mounted inside the circular through groove (23) via a bearing, and the receiving pipe (8) is located inside the rotating cylinder (4).

3. The oil pipe lining anti-corrosion coating spraying equipment according to claim 2, characterized in that: The outer side of the driving gear (6) meshes with the outer side of the driven gear (3).

4. The oil pipe lining anti-corrosion coating spraying equipment according to claim 3, characterized in that: The end of the bent slide rod (12) away from the internal thread rod (9) is slidably installed on the inner side of the movable slide groove (14) on one side of the two outer frames (24), and the end of the bent slide rod (12) away from the internal thread rod (9) is fixedly connected to one side of the inner sleeve rod (15) inside the two outer frames (24).

5. The oil pipe lining anti-corrosion coating spraying equipment according to claim 4, characterized in that: A rubber pad (17) is fixedly installed on the outside of the contact block (16).

6. The oil pipe lining anti-corrosion coating spraying equipment according to claim 5, characterized in that: The regulating tube (21) is slidably installed inside the socket two (20), and the outer side of the socket two (20) is threaded with a fastening bolt.