Pipeline interior repairing device

Abstract

The utility model discloses a device for repairing the interior of a pipeline. Comprising a blowback pipe main body, a repairing liner pipe which enters from a pipe inlet of the blowback pipe main body and is arranged in the blowback pipe main body, a transition hose connected to an air outlet of the blowback pipe main body, and a rigid fixing end which is connected to the end part of the transition hose and is used for turning out the opening end of the repairing liner pipe and fixing. The pipeline interior repairing device belongs to a non-excavation type repairing mode, construction operation does not need to be conducted in the pipeline in the repairing process, repairing operation is easy and convenient, repairing efficiency is high, installation of repairing auxiliary equipment is reduced, and repairing cost is low; the end of the air outlet is connected with the transition hose, the transition hoses with different lengths can be selected according to specific working conditions, the transition hoses can be connected into the pipeline, and the situation that repairing work cannot be carried out due to the fact that equipment cannot be placed near the pipeline is avoided.

Description

Technical Field

[0001] This utility model relates to the field of pipeline repair technology, and in particular to an internal pipeline repair device. Background Technology

[0002] Urban drainage pipelines are a crucial infrastructure supporting social development and ensuring people's lives. The main urban drainage pipes are constructed using materials such as cement, plastic, and cast iron. Pipeline maintenance is essential to ensure their proper function and operation. Currently, the known method for repairing collapsed pipelines involves excavating to locate and repair the collapsed area, followed by backfilling to restore the original surface. However, this excavation method is time-consuming, labor-intensive, and expensive. Therefore, a trenchless method has been invented, specifically using a flexible hose lining to add a rigid lining inside the pipe. The hose is typically made of PVC or resin, and after insertion, it is cured using light or heat to form a lining that adheres tightly to the inner wall of the pipe. This method is simple, quick to form, and has a short construction time, making it widely used in construction.

[0003] For example, an existing patent (CN216195272U) discloses an internal repair device for water supply and drainage pipes based on ultraviolet light curing technology, which includes an airbag mechanism. The airbag mechanism has a positioning mechanism fixedly installed at the center of both sides, and casters fixedly installed at the front and rear ends of both sides. The airbag mechanism includes an airbag body, with fixed seats at both ends. A protective membrane is movably fitted in the middle of the airbag body, and a sealing felt cylinder is movably fitted in the middle of the protective membrane. This invention requires a positioning mechanism inside the pipe to support and move the airbag mechanism, which not only limits the application scenarios of the equipment, making it unusable in situations where installation and removal inside the pipe are inconvenient, but also results in a complex repair process, requiring numerous auxiliary equipment, leading to low repair efficiency and high repair costs. Summary of the Invention

[0004] In view of this, the present invention provides a pipe internal repair device, which has the characteristics of wide applicability, simple and convenient operation, high repair efficiency and low cost.

[0005] This utility model solves the above problems through the following technical means:

[0006] The pipe internal repair device of this utility model includes a backflush pipe body, a repair liner that enters from the inlet of the backflush pipe body and is arranged inside the backflush pipe body, a transition hose connected to the air outlet of the backflush pipe body, and a rigid fixing end connected to the end of the transition hose for turning out the open end of the repair liner and fixing it.

[0007] Preferably, the fixed end includes an inner tube fixedly connected to the end of the transition hose, and an outer tube sleeved on the outside of the inner tube for clamping the repair liner.

[0008] Specifically, the inner tube includes a cylindrical connecting part and a first locking part connected to the connecting part with a linearly increasing outer diameter. Meanwhile, the outer tube includes a limiting part for limiting movement using the inner tube as a guide tube, and a second locking part connected to the limiting part and correspondingly engaging with the first locking part. The slope of the second locking part is greater than the slope of the first locking part.

[0009] Preferably, the end of the inner tube is provided with a flange.

[0010] Preferably, the backflush pipe body is supported by a triangular base, and the bottom of the triangular base is connected to a retractable caster via a hydraulic cylinder.

[0011] Preferably, the inlet of the backflush pipe body is provided with two pressure rollers arranged opposite each other.

[0012] Preferably, one of the two pressure rollers is configured to be relatively movable, such that the distance between the two pressure rollers is adjustable.

[0013] Specifically, the backflush tube body includes a material storage mechanism for arranging the repair liner and a blower mechanism for blowing out the repair liner.

[0014] Specifically, the storage mechanism is configured as a winding structure.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0016] This utility model discloses an internal pipe repair device, which is a trenchless repair method. No construction work is required inside the pipe during the repair process, making the repair operation simple, convenient, and efficient. It also reduces the installation of auxiliary equipment and lowers repair costs. A transition hose is connected to the end of the air outlet, allowing for selection of different hose lengths according to specific working conditions. This ensures the hose can connect to the inside of the pipe, preventing repair work from being impossible due to the inability to place equipment near the pipe. Furthermore, a rigid fixing end located at the opening of the transition hose securely fixes the end of the repair liner blown out from within it, facilitating the reverse blowing of the repair liner. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal pipe repair device of this utility model;

[0018] Figure 2This is a schematic diagram of the structure of the fixed end of the pipe internal repair device of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal pipe repair device of this utility model when the repair liner is flipped out;

[0020] Figure 4 This is a schematic diagram of the internal pipe repair device of this utility model when the repair liner is secured by the fixed end.

[0021] like Figure 1-Figure 4 Backflush pipe body-1, inlet-11, outlet-12, triangular base-13, repair liner-2, transition hose-3, fixed end-4, inner tube-41, connecting part-411, first locking part-412, flange-413, outer tube-42, limiting part-421, second locking part-422. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1 As shown: The internal pipe repair device described in this embodiment includes a backflush pipe body 1, a repair liner 2 that enters from the inlet 11 of the backflush pipe body 1 and is arranged inside the backflush pipe body 1, a transition hose 3 connected to the outlet 12 of the backflush pipe body 1, and a rigid fixing end 4 connected to the end of the transition hose 3 for turning out the open end of the repair liner 2 and fixing it.

[0025] The internal pipe repair device described in this embodiment is a trenchless repair method. No construction work is required inside the pipe during the repair process, making the repair operation simple, convenient, and efficient. It also reduces the installation of auxiliary equipment and lowers repair costs. A transition hose 3 is connected to the end of the air outlet 12. Different lengths of the transition hose 3 can be selected according to specific working conditions to connect to the inside of the pipe, avoiding situations where repair work cannot be carried out due to the inability to place equipment near the pipe. Furthermore, the rigid fixing end 4 located at the open end of the transition hose 3 can securely fix the end of the repair liner 2, which will be blown out from inside, facilitating the reverse blowing of the repair liner 2.

[0026] When using the internal pipe repair device described in this embodiment to repair a pipe, firstly, the repair liner 2 is inserted into the inlet 11 of the backflush pipe body 1 and arranged inside the backflush pipe body 1. Then, the repair liner 2 is blown out from the outlet 12 of the backflush pipe body 1, and its end extends out from the fixed end 4 after passing through the transition hose 3. Then, the extended part of the repair liner 2 is turned outward to the outside of the fixed end 4 and fixed by the fixed end 4. Next, the fixed end 4 is connected to the inside of the pipe to be repaired, and the backflush pipe body 1 is turned on to blow air. The air blown out from the outlet 12 blows the repair liner 2 out from the fixed end 4 in the opposite direction, adhering it to the inner wall of the pipe to form a new built-in pipe.

[0027] As a specific implementation method of this embodiment, such as Figure 2 As shown, the fixed end 4 includes an inner tube 41 fixedly connected to the end of the transition hose 3, and an outer tube 42 sleeved on the outside of the inner tube 41 for clamping the repair liner 2 that has been turned out to the outside of the inner tube 41; more specifically, the inner tube 41 includes a cylindrical connecting part 411 and a first locking part 412 connected to the connecting part 411 and having a linearly increasing outer diameter; meanwhile, the outer tube 42 includes a limiting part 421 for limiting movement using the inner tube 41 as a guide tube, and a second locking part 422 connected to the limiting part 421 and correspondingly engaged with the first locking part 412, as shown. Figure 4 As shown, when the outer tube 42 is moved towards the end, the first locking part 412 and the second locking part 422 engage to clamp the middle repair liner 2. Similarly, as... Figure 3 As shown, when the outer tube 42 is moved inward, the first locking part 412 and the second locking part 422 disengage, easily pulling out the repair liner 2. The slope of the second locking part 422 is greater than that of the first locking part 412, so that the gap decreases linearly from the end to the inside. This not only makes it easier for the repair liner 2 to extend into the gap, but also accommodates the fixing of repair liner 2 with more thickness specifications.

[0028] In a preferred embodiment of this invention, the end of the first locking part 412 is provided with a flange 413, which can limit the end and make it more secure, thereby further preventing the repair liner 2 from coming off.

[0029] In a preferred embodiment of this invention, the backflush pipe body 1 is supported by a triangular base 13, and the bottom of the triangular base 13 is connected to a retractable movable wheel (not shown in the figure) via a hydraulic cylinder (not shown in the figure). When the hydraulic cylinder retracts upward, it drives the movable wheel to retract upward, so that the triangular base 13 supports the ground; when the hydraulic cylinder extends downward, it drives the movable wheel to extend downward to support the ground, which facilitates the movement of the entire device.

[0030] As a preferred embodiment of this example, the inlet 11 of the backflush tube body 1 is provided with two opposing pressure rollers (not shown in the figure), which can squeeze the repair liner 2 entering the inlet 11, so that the adhesive absorption of the repair liner 2 is more uniform and the repair quality is improved.

[0031] As a preferred embodiment of this invention, one of the two pressure rollers is configured to be relatively movable, so that the distance between the two pressure rollers is adjustable. The spacing can be adjusted as needed, thereby adjusting the amount of adhesive absorbed by the repair liner 2, making it more applicable.

[0032] In this embodiment, the backflush tube body 1 includes a material storage mechanism for arranging the repair liner 2 and a blower mechanism for blowing out the repair liner 2. Specifically, the material storage mechanism is configured as a winding structure.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A pipe internal repair device, characterized in that: It includes a backflush pipe body, a repair liner that enters from the inlet of the backflush pipe body and is arranged inside the backflush pipe body, a transition hose connected to the air outlet of the backflush pipe body, and a rigid fixing end connected to the end of the transition hose for turning out the open end of the repair liner and fixing it.

2. The pipe internal repair device according to claim 1, characterized in that: The fixed end includes an inner tube fixedly connected to the end of the transition hose, and an outer tube sleeved on the outside of the inner tube for clamping the repair liner.

3. The pipe internal repair device according to claim 2, characterized in that: The inner tube includes a cylindrical connecting part and a first locking part connected to the connecting part with a linearly increasing outer diameter. Meanwhile, the outer tube includes a limiting part for limiting movement using the inner tube as a guide tube, and a second locking part connected to the limiting part and correspondingly engaging with the first locking part. The slope of the second locking part is greater than the slope of the first locking part.

4. The pipe internal repair device according to claim 3, characterized in that: The end of the first locking part is provided with a flange.

5. The pipe internal repair device according to claim 1, characterized in that: The main body of the backflush pipe is supported by a triangular base, and the bottom of the triangular base is connected to retractable casters via a hydraulic cylinder.

6. The pipe internal repair device according to claim 1, characterized in that: The inlet of the backflush pipe body is provided with two pressure rollers arranged opposite each other.

7. The pipe internal repair device according to claim 6, characterized in that: One of the two pressure rollers is configured to be relatively movable, such that the distance between the two pressure rollers is adjustable.

8. The pipe internal repair device according to claim 1, characterized in that: The backflush tube body includes a material storage mechanism for arranging the repair liner and a blower mechanism for blowing out the repair liner.

9. The internal pipe repair device according to claim 8, characterized in that: The material storage mechanism is configured as a coil structure.

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