A trenchless pipe rehabilitation apparatus for improving radiation cure

By designing a rotatable protective rod structure, the problem of UV lamp light obstruction was solved, achieving uniform UV lamp radiation curing and improving the quality and convenience of pipeline repair.

CN224497955UActive Publication Date: 2026-07-14GUAVA (SHANDONG) ENVIRONMENTAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUAVA (SHANDONG) ENVIRONMENTAL TECH CO LTD
Filing Date
2025-07-30
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In existing technologies, the protective rod is placed outside the ultraviolet lamp, which blocks the light and affects the uniformity of radiation curing of the repair hose, thus reducing the quality of pipe repair.

Method used

The protective rod is designed to be rotatable, rotating outwards around the UV lamp during storage and transportation, and rotating inwards during use to avoid obstructing the transmission of light between the UV lamp and the inner wall of the pipe.

Benefits of technology

This technology enables uniform radiation curing of the pipe's inner wall by ultraviolet lamps, improving the quality and efficiency of pipe repair and simplifying the operation process.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224497955U_ABST
    Figure CN224497955U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of non-excavation type pipeline repair devices of improving radiation curing effect, mainly related to pipeline repair field. Including multiple solidification lamp holders, connecting cable is equipped between adjacent solidification lamp holders, multiple ultraviolet lamps are equipped on solidification lamp holder, lamp groove is equipped on solidification lamp holder, ultraviolet lamp is arranged in lamp groove, multiple rotating rings are rotatably connected on the opposite two side walls in lamp groove, protection rod is equipped between opposite two rotating rings, protection rod is encircled at the outside of ultraviolet lamp and rotates movement is carried out with the center line of ultraviolet lamp as axis, knob that drives multiple rotating rings simultaneously rotates is equipped in lamp groove, positioning column used in cooperation with knob is equipped in lamp groove. The utility model has the beneficial effect that it can solve the technical problem that the blocking of protection rod to ultraviolet lamp affects the uniformity of radiation curing, will not form blocking between ultraviolet lamp and pipeline inner wall, ensure the uniformity of ultraviolet lamp radiation curing, ensure the quality of pipeline repair.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of light-curing pipe repair, specifically a trenchless pipe repair device that improves the effect of radiation curing. Background Technology

[0002] This device, used for trenchless UV-curing repair of pipelines, irradiates the inner surface of a repair hose with a UV lamp. This causes the hose to cure and adhere to the inner wall of the pipeline, enabling rapid repair without excavation. The UV lamp is typically carried and moved using a lamp holder. To protect the lamp, a protective rod is usually installed on the lamp holder outside the lamp to prevent breakage during movement and storage. However, during pipeline repair, this protective rod obstructs the UV lamp, preventing some light from directly reaching the repair hose. This reduces the irradiation intensity in that area, resulting in uneven UV radiation onto the hose and affecting the uniformity of the curing process, ultimately impacting the quality of the pipeline repair. Utility Model Content

[0003] The purpose of this invention is to provide a trenchless pipe repair device that improves the radiation curing effect. It solves the technical problem that the protective rod blocks the ultraviolet lamp, thus affecting the uniformity of radiation curing. By rotating the protective rod to be placed outside the ultraviolet lamp and then rotating it to the inside of the ultraviolet lamp during use, no obstruction is formed between the ultraviolet lamp and the inner wall of the pipe, ensuring the uniformity of ultraviolet lamp radiation curing and guaranteeing the quality of pipe repair.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A trenchless pipe repair device for improving radiation curing effect includes multiple curing lamp holders, with connecting cables between adjacent curing lamp holders. Each curing lamp holder has multiple ultraviolet lamps and a lamp groove. The ultraviolet lamps are housed within the lamp grooves. Multiple rotating rings are rotatably connected to opposite side walls within the lamp grooves. A protective rod is positioned between two opposite rotating rings, and the protective rod surrounds the ultraviolet lamp and rotates around its center line. A knob is provided within the lamp groove to drive the multiple rotating rings to rotate simultaneously, and a positioning post is provided within the lamp groove to cooperate with the knob.

[0006] Furthermore, the knob is equipped with a drive gear, and the outer side of multiple rotating rings on one side is equipped with driven gears. The drive gear is simultaneously engaged with multiple driven gears.

[0007] Furthermore, a fixed shaft is provided in the middle of the lamp slot, the knob is rotatably sleeved on the outside of the fixed shaft, and the positioning post is disposed between the knob and the fixed shaft.

[0008] Furthermore, the side of the fixed shaft is provided with multiple positioning holes, and the positioning pin is threadedly connected to the knob. The positioning pin passes through the knob and is movably inserted into the positioning hole.

[0009] Furthermore, the longitudinal section of the protective rod is a fan-shaped ring.

[0010] Furthermore, a movable disk is slidably connected to the side of the curing lamp holder along the lateral direction. Multiple connecting rods are rotatably connected to both the movable disk and the curing lamp holder. The middle of two adjacent connecting rods is rotatably connected, and rollers are provided at the ends of the connecting rods.

[0011] Furthermore, the curing lamp holder has a fixed column on its side, the movable disk is slidably sleeved on the outside of the fixed column, and the curing lamp holder has multiple guide rods on its side, the guide rods passing through the movable disk and slidably connected to it.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The structure of this utility model features a lamp trough on a curing lamp holder, with multiple UV lamps housed within the trough. Rotating rings are rotatably mounted on opposite side walls of the trough, and a protective rod is positioned between two opposing rotating rings. The protective rod encircles the UV lamp and rotates around its centerline. This structure allows the protective rod to rotate around the UV lamp. During transportation and storage, the protective rod rotates to the edge of the trough, forming a protective structure around the UV lamp to prevent damage from impacts and effectively protect it. During use, the protective rod rotates to the inside of the trough, preventing obstruction between the UV lamp and the side wall of the pipe to be repaired. This ensures the uniformity of UV curing of the inner wall of the pipe and guarantees the quality of the pipe repair.

[0014] 2. A knob is installed in the lamp trough to drive multiple rotating rings to rotate simultaneously. A positioning post is installed in the lamp trough to cooperate with the knob. This structure drives multiple rotating rings to rotate simultaneously through the knob, thereby synchronously adjusting the position of multiple protective rods on the fixed lamp holder. The positioning post is used to fix the position of the knob after rotation, ensuring the firmness of the position of the protective rod after adjustment. This greatly simplifies the operation steps and improves the convenience of adjusting the position of the protective rod. Attached Figure Description

[0015] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Appendix Figure 2This is a top view of the present invention.

[0017] Appendix Figure 3 This is an appendix to this utility model. Figure 2 A cross-sectional view along the AA direction.

[0018] Appendix Figure 4 This is an appendix to this utility model. Figure 3 A cross-sectional view along the BB direction.

[0019] Appendix Figure 5 This is an appendix to this utility model. Figure 3 A magnified view of part C in the middle.

[0020] The labels shown in the attached diagram:

[0021] 1. Fixing lamp holder; 2. Connecting cable; 3. UV lamp; 4. Lamp trough; 5. Rotating ring; 6. Protective rod; 7. Knob; 8. Positioning post; 9. Driving gear; 10. Driven gear; 11. Fixed shaft; 12. Positioning hole; 13. Moving plate; 14. Connecting rod; 15. Roller; 16. Fixed post; 17. Guide rod. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0023] Reference Figure 1 and Figure 2This utility model describes a trenchless pipe repair device for improving radiation curing effects. The main structure includes multiple curing lamp holders 1, which support ultraviolet lamps 3. Multiple holders are configured according to usage requirements, each with a hook at one end. A traction rope is used to fix the lamp holders 1 to the hook, thereby moving the multiple curing lamp holders 1 within the pipe to achieve radiation curing of the repair tubing on the pipe's inner wall. Connecting cables 2 are provided between adjacent curing lamp holders 1, electrically connecting the ultraviolet lamps 3 on adjacent holders 1 to ensure synchronized power supply to the lamps 3. Each curing lamp holder 1 has multiple ultraviolet lamps... The external lamp 3, specifically the ultraviolet lamp 3, can adopt a commonly used ultraviolet lamp structure in existing technology, generally divided into mercury lamps and LED lamps. The curing lamp holder 1 is provided with a lamp groove 4, preferably with an annular longitudinal section, recessed inward from the surface of the curing lamp holder 1. This allows the lamp groove 4 to be evenly distributed on various positions along the side of the curing lamp holder 1. The ultraviolet lamp 3 is placed within the lamp groove 4, enabling the ultraviolet rays emitted by the ultraviolet lamp 3 to pass through the side of the lamp groove 4 and smoothly irradiate the inner wall of the pipe to be repaired without obstructing the light emitted by the ultraviolet lamp 3, thus improving the uniformity of radiation. Multiple rotating rings 5 ​​are rotatably connected to the opposite side walls of the lamp groove 4 via bearings. A preferred rotating ring 5 is rotatably fitted around the outside of one end of the UV lamp 3. A protective rod 6 is fixed between two opposing rotating rings 5 ​​by welding or bolts. The protective rod 6 surrounds the outside of the UV lamp 3 and rotates around the center line of the UV lamp 3. This structure allows the protective rod 6 to rotate around the outside of the UV lamp 3. During storage and transportation of the curing lamp holder 1, the protective rod 6 rotates around the UV lamp 3 to the outer edge of the lamp slot 4, thus forming a protective structure on the outside of the UV lamp 3 to prevent damage from impacts. During use, the protective rod 6 is rotated inside the lamp slot 4 to prevent damage to the UV lamp 3 and the lamp holder. The obstruction between the repair pipes allows the UV lamp 3 to radiate evenly onto the inner wall of the pipe to be repaired, ensuring the intensity and uniformity of the irradiation and guaranteeing the quality of the repaired hose after curing. The lamp slot 4 is equipped with a knob 7 that drives multiple rotating rings 5 ​​to rotate simultaneously. The lamp slot 4 is also equipped with a positioning post 8 that works in conjunction with the knob 7. This structure allows the knob 7 to be used to adjust the position of multiple protective rods 6 simultaneously, and the positioning post 8 to fix the position of the knob 7. This makes the adjusted position of the multiple protective rods 6 more stable, ensuring the firmness during storage and use, greatly simplifying the steps of adjusting the position of the protective rods 6, and improving the convenience of use.

[0024] Preferred, refer to Figure 3 and Figure 5The knob 7 is fixed with a drive gear 9 by welding or bolts. The external parts of the multiple rotating rings 5 ​​on one side are all fixed with driven gears 10 by welding or bolts. The drive gear 9 meshes with the multiple driven gears 10. The knob 7 is rotatably connected to the lamp slot 4 through bearings. When the knob 7 rotates, the multiple rotating rings 5 ​​are driven to rotate simultaneously under the meshing connection of the drive gear 9 and the multiple driven gears 10, making the rotation control of the multiple rotating rings 5 ​​by the knob 7 more efficient and convenient.

[0025] Preferably, a fixed shaft 11 is fixed to the middle of the lamp slot 4 by welding or bolts. The knob 7 is rotatably sleeved on the outside of the fixed shaft 11. The fixed shaft 11 provides support for the rotation of the knob 7, improving the stability of the knob 7's rotation. The positioning post 8 is set between the knob 7 and the fixed shaft 11. This structure allows the positioning post 8 to form an effective block in the rotation direction of the knob 7 after the knob 7 rotates relative to the fixed shaft 11, preventing the knob 7 from continuing to rotate. The positioning operation is more convenient, and the positioning effect of the knob 7 is improved.

[0026] Preferably, the side of the fixed shaft 11 is provided with multiple positioning holes 12, which are recessed inward from the side of the fixed shaft 11. The positioning pin 8 is threadedly connected to the knob 7. The positioning pin 8 passes through the knob 7 and is movably inserted into the positioning hole 12. With this structure, after the knob 7 is rotated at a certain angle, the positioning pin 8 is aligned with the corresponding positioning hole 12. At this time, rotating the positioning pin 8 causes the end of the positioning pin 8 to rotate into the positioning hole 12 under the action of the threaded connection, thereby fixing the position of the knob 7 relative to the fixed shaft 11. The structure is simple, and the positioning and cooperation between the positioning pin 8 and the fixed shaft 11 is more convenient and stable.

[0027] Preferably, the longitudinal section of the protective rod 6 is a fan-shaped ring, and the surface of the fan-shaped ring has a certain curvature. When the protective rod 6 is rotated to the outer edge of the lamp slot 4 to protect the ultraviolet lamp 3, the arc-shaped structure can be aligned with the arc-shaped side of the curing lamp holder 1, so that the protective rod 6 and the side of the curing lamp holder 1 are more aligned and no protrusion is formed on the side of the curing lamp holder 1, avoiding possible collisions with the external environment during movement, further ensuring the firmness of the protective structure and improving the protective effect.

[0028] Preferred, refer to Figure 4The curing lamp holder 1 has a movable disk 13 slidably connected to its side along the lateral direction. Both the movable disk 13 and the curing lamp holder 1 are rotatably connected to multiple connecting rods 14 by pins or hinges. The middle of two adjacent connecting rods 14 is rotatably connected by pins or hinges. The end of the connecting rod 14 is rotatably connected to a roller 15. This structure makes the two connecting rods 14 form a scissor-like telescopic structure. When the movable disk 13 moves laterally, the two connecting rods 14 of the scissor structure cross-rotate, thereby changing the height of the roller 15 at the end of the connecting rod 14. This adapts to pipes with different inner diameters, keeps the ultraviolet lamp 3 in the middle of the pipe, and improves the adaptability to repair pipes of different sizes.

[0029] Preferably, the side of the curing lamp holder 1 is fixed with a fixing column 16 by welding or bolting. The movable disk 13 is slidably sleeved on the outside of the fixing column 16. The fixing column 16 provides support for the movement of the movable disk 13, improving the stability of the movable disk 13's moving structure. The side of the curing lamp holder 1 is fixed with multiple guide rods 17 by welding or bolting. The guide rods 17 pass through the movable disk 13 and are slidably connected to it. The multiple guide rods 17 further improve the stability of the movable disk 13's position after movement, making the structure of the roller 15 at the end of the connecting rod 14 more stable. At the same time, a positioning bolt is threaded onto the movable disk 13, and the guide rod 17 is provided with multiple insertion holes for the positioning bolt. After the movable disk 13 moves a certain distance, the positioning bolt is rotated, causing the positioning bolt to rotate into the corresponding insertion hole, effectively fixing the position of the movable disk 13 and ensuring the convenience and stability of the roller 15's height adjustment.

[0030] Working Principle: This invention features a lamp groove 4 on a curing lamp holder 1, within which multiple UV lamps 3 are housed. Rotating rings 5 ​​are rotatably mounted on opposite side walls of the lamp groove 4. A protective rod 6 is positioned between two opposing rotating rings 5. The protective rod 6 surrounds the UV lamps 3 and rotates around their centerline. This structure allows the protective rod 6 to rotate around the UV lamps 3. During transportation and storage, the protective rod 6 rotates to the edge of the lamp groove 4, forming a protective structure around the UV lamps 3 to prevent damage from impacts and effectively protect them. During use, the protective rod 6 is rotated to the edge of the lamp groove 4. The internal structure ensures that the UV lamp 3 does not obstruct the path between itself and the side wall of the pipe to be repaired, thus guaranteeing the uniformity of the UV lamp 3's radiation curing of the inner wall of the pipe and ensuring the quality of the pipe repair. A knob 7 is installed inside the lamp slot 4 to drive multiple rotating rings 5 ​​to rotate simultaneously. A positioning post 8 is also installed inside the lamp slot 4 to cooperate with the knob 7. This structure allows the knob 7 to simultaneously drive multiple rotating rings 5 ​​to rotate, thereby synchronously adjusting the positions of multiple protective rods 6 on the curing lamp holder 1. The positioning post 8 then fixes the position of the knob 7 after rotation, ensuring the stability of the adjusted protective rod 6 position. This greatly simplifies the operation steps and improves the convenience of adjusting the position of the protective rods 6.

Claims

1. A trenchless pipe repair device for improving radiation curing effect, comprising multiple curing lamp holders (1), connecting cables (2) provided between adjacent curing lamp holders (1), and multiple ultraviolet lamps (3) provided on each curing lamp holder (1), characterized in that: The curing lamp holder (1) is provided with a lamp groove (4), and the ultraviolet lamp (3) is set in the lamp groove (4). Multiple rotating rings (5) are rotatably connected to the opposite side walls of the lamp groove (4). A protective rod (6) is provided between two opposite rotating rings (5). The protective rod (6) surrounds the outside of the ultraviolet lamp (3) and rotates around the center line of the ultraviolet lamp (3). A knob (7) is provided in the lamp groove (4) to drive the multiple rotating rings (5) to rotate simultaneously. A positioning post (8) is provided in the lamp groove (4) to cooperate with the knob (7).

2. The trenchless pipe repair device for improving radiation curing effect according to claim 1, characterized in that: The knob (7) is provided with a drive gear (9), and the outer side of the multiple rotating rings (5) on one side is provided with driven gears (10). The drive gear (9) is simultaneously engaged with multiple driven gears (10).

3. The trenchless pipe repair device for improving radiation curing effect according to claim 2, characterized in that: The lamp slot (4) has a fixed shaft (11) in the middle. The knob (7) is rotated and sleeved on the outside of the fixed shaft (11). The positioning post (8) is set between the knob (7) and the fixed shaft (11).

4. The trenchless pipe repair device for improving radiation curing effect according to claim 3, characterized in that: The fixed shaft (11) has multiple positioning holes (12) on its side. The positioning pin (8) is threaded onto the knob (7). The positioning pin (8) passes through the knob (7) and is movably inserted into the positioning hole (12).

5. The trenchless pipe repair device for improving radiation curing effect according to claim 1, characterized in that: The longitudinal section of the protective rod (6) is a fan-shaped ring.

6. The trenchless pipe repair device for improving radiation curing effect according to claim 1, characterized in that: The side of the curing lamp holder (1) is slidably connected to a movable disk (13). Both the movable disk (13) and the curing lamp holder (1) are rotatably connected to multiple connecting rods (14). The middle of two adjacent connecting rods (14) are rotatably connected. The end of the connecting rod (14) is provided with a roller (15).

7. The trenchless pipe repair device for improving radiation curing effect according to claim 6, characterized in that: The curing lamp holder (1) has a fixed column (16) on its side, and the movable disk (13) is slidably sleeved on the outside of the fixed column (16). The curing lamp holder (1) has multiple guide rods (17) on its side, and the guide rods (17) pass through the movable disk (13) and are slidably connected to it.