A sewer bottom leakage identification and sewage cleaning and repairing device
By designing a sewage pipeline repair device that includes sonar detection, airbag sealing, and a combination of a rotating shaft and an electric telescopic rod, the problem of accurately locating and repairing leaks at the bottom of sewage pipelines in existing technologies has been solved. This device enables efficient repair in flowing water and silt environments and completely replaces the need for workers to enter the pipeline for work.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 5 ENG GRP BUILDING ENG
- Filing Date
- 2023-10-26
- Publication Date
- 2026-06-02
AI Technical Summary
Existing technologies cannot accurately identify and effectively repair leaks at the bottom of sewage pipes in flowing water and silt environments, nor can they completely replace workers entering the pipes for operations.
A device comprising a water pipe, a forward component, a repair component, and a repair assembly was designed. It utilizes a sonar detector to identify leak points, an airbag to block water flow interference, a high-pressure nozzle to clean silt, and a rotating shaft in conjunction with an electric telescopic rod for accurate positioning and repair.
It enables accurate location and repair of leaks at the bottom of sewage pipes in flowing water and silt environments, improving repair efficiency and effectiveness, completely replacing workers entering the pipes for operation, and enhancing safety and construction efficiency.
Smart Images

Figure CN117722613B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of sewage pipeline maintenance, and in particular to a device for identifying and cleaning leaks at the bottom of sewage pipelines. Background Technology
[0002] With the continuous development of urban modernization, the application of pipelines is becoming increasingly widespread. Some sewage pipelines need to be installed at the bottom of lakes. Once a sewage pipeline leaks, it will cause pollution to the lake water, requiring timely repair. Current repair techniques mainly include high-pressure grouting with sealing materials, inner lining sleeves, epoxy resin with fiberglass cloth, spiral winding, ultraviolet curing, centrifugal spraying, and caulking. However, there is currently no technical solution that can completely replace manual pipeline work, adapt to silt and flowing water environments, and is suitable for grouting and sealing repair of large-diameter concrete pipelines. Chinese invention patents disclose a remote-controlled trolley (2023103193575) for repairing reinforced concrete pipes. This trolley is driven and guided; visual monitoring equipment analyzes the internal condition of the pipe to locate cracks and damage; the filling and repair section is rotated to a suitable angle, and the telescopic application device's extension length, circumferential position, and pitch angle are adjustable to contact the crack. Simultaneously, a storage tube uses a piston to squeeze out the internal filling putty, thus completing the crack filling work. An intelligent pipe repair robot (2019206177272) first listens to determine the damage point. Once the robot reaches the approximate repair area, it captures images and transmits them to the ground for observation of the specific damage location. Adjusting its height according to the pipe diameter, the airbag inflates to expand the support structure, thus opening the inner flexible tube coated with UV-cured adhesive and adhering it to the inner wall of the pipe. UV light then cures the adhesive for bonding. However, these methods suffer from the inability to accurately identify leaks at the bottom of the pipe in flowing water and silt environments, and the inability to repair leaks affected by bottom silt. Therefore, a novel inspection device is urgently needed to better repair leaks at the bottom of sewage pipes. Summary of the Invention
[0003] In view of the problems existing in the above-mentioned sewage pipe bottom leakage detection and cleaning and maintenance devices, the present invention is proposed.
[0004] Therefore, the purpose of this invention is to provide a sewage pipe bottom leakage identification and cleaning and maintenance device, which aims to solve the problems of existing technologies that cannot accurately identify leakage points, are affected by the internal environment of the pipe when moving in the pipe, and cannot completely replace workers entering the pipe for operation.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a water pipe; a forward component, including a fixing ring disposed on the water pipe, an active component disposed on the fixing ring, and a driven component disposed on the fixing ring; and a repair component, including a device body disposed on the water pipe, a sonar detector disposed on the device body, an isolation component disposed on the water pipe, and a repair component disposed on the water pipe.
[0006] As a preferred embodiment of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention, the active component includes a support rod disposed on the fixed ring, a first connecting rod disposed at the end of the support rod away from the fixed ring, and an active wheel rotatably disposed at the end of the first connecting rod away from the support rod.
[0007] As a preferred embodiment of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention, the driven component includes a first electric telescopic rod disposed on the fixed ring, a second connecting rod disposed at the end of the first electric telescopic rod away from the fixed ring, and a driven wheel disposed at the end of the second connecting rod away from the first electric telescopic rod.
[0008] As a preferred embodiment of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention, the isolation component includes: first airbags disposed at both ends of the water pipe, second airbags disposed on the water pipe with two sets of first airbags close to each other, a fixing frame disposed on the main body of the device, and a cleaning component disposed on the fixing frame.
[0009] As a preferred embodiment of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention, the cleaning component includes an inlet pipe disposed on the fixed frame, a high-pressure nozzle disposed on one end of the inlet pipe near the fixed frame, a pressure plate disposed in the high-pressure nozzle, a tension spring disposed at the bottom of the pressure plate, and a water pumping hose disposed on the main body of the device.
[0010] As a preferred embodiment of the sewage pipe bottom leakage identification and cleaning and repair device of the present invention, the repair component includes a movable part disposed on the water pipe, a top support disposed on the movable part, and a filling part disposed on the top support.
[0011] As a preferred embodiment of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention, the movable component includes a ring disposed on the outer wall of the water pipe, a second electric telescopic rod disposed between the ring and the main body of the device, a rotating shaft disposed on the ring, and an internal gear disposed outside the rotating shaft and meshing with the rotating shaft.
[0012] As a preferred embodiment of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention, the top support includes a third electric telescopic rod disposed on the internal gear, a top support pad disposed on the end of the third electric telescopic rod away from the internal gear, and a fourth electric telescopic rod disposed on the internal gear.
[0013] In a preferred embodiment of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention, the third electric telescopic rod and the fourth electric telescopic rod are arranged opposite to each other on the internal gear.
[0014] As a preferred embodiment of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention, the filling component includes a repair groove disposed at the end of the fourth electric telescopic rod away from the internal gear, a fastening rubber gasket disposed on the repair groove, a pressure relief hole disposed on the repair groove, and a grouting and cleaning valve disposed on the repair groove.
[0015] The beneficial effects of this invention are:
[0016] 1. It can completely replace workers entering the pipeline to carry out pipeline repair work, solving the problems of construction difficulties and low safety caused by the narrow internal space of the pipeline.
[0017] 2. By using two airbags for pre-repair sealing, the problem of inadequate sealing and interference from water flow during repair is effectively solved, greatly improving repair efficiency and effectiveness.
[0018] 3. The leak point is accurately located by using a combination of a rotating shaft and an electric telescopic rod. The fourth telescopic rod is used to ensure that the repair groove fits tightly with the leak point, thus guaranteeing the repair effect.
[0019] By employing measures such as airbag sealing, water pumping, and high-pressure water jet flushing, the repair process was greatly prevented from being disrupted by sludge and organic matter inside the pipe. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:
[0021] Figure 1 This is a bottom view of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention.
[0022] Figure 2This is a top view of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention.
[0023] Figure 3 For the present invention Figure 1 Enlarged view of the structure at point A in the middle.
[0024] Figure 4 For the present invention Figure 1 Enlarged view of the structure at point B in the middle.
[0025] Figure 5 For the present invention Figure 1 Enlarged view of the structure at point C.
[0026] Figure 6 This is a schematic diagram of the high-pressure nozzle of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention.
[0027] Figure 7 This is a cross-sectional schematic diagram of the high-pressure nozzle of the sewage pipe bottom leakage identification and cleaning and maintenance device of the present invention.
[0028] Figure 8 This is a schematic diagram of the pressure plate of the sewage pipe bottom leakage detection and cleaning and maintenance device of the present invention.
[0029] Figure 9 For the present invention Figure 2 Enlarged view of the structure at point D. Detailed Implementation
[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.
[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.
[0033] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.
[0034] Example 1
[0035] Reference Figure 1 The first embodiment of the present invention provides a sewage pipe bottom leakage identification and cleaning and repair device. This device includes a water pipe 100, which is used for the flow of sewage in the sewage pipe when repairing the leakage point.
[0036] The forward movement component 200 includes a fixed ring 201 disposed on the water pipe 100, an active component 202 disposed on the fixed ring 201, and a driven component 203 disposed on the fixed ring 201. The fixed ring 201 is used to install the active component 202 and the driven component 203. The active component 202 and the driven component 203 are used for the device to move in the sewage pipe. There are two sets of forward movement components 200, which are located at the beginning and end of the water pipe 100 respectively. Each set of forward movement components 200 has two sets of driven components 203. The active component 202 and the two sets of driven components 203 on each set of fixed ring 201 are evenly distributed on the fixed ring 201 to increase the stability of the device movement.
[0037] The repair component 300 includes a device body 301 installed on the water pipe 100, a sonar detector 302 installed on the device body 301 for detecting leaks in the sewage pipe, an isolation component 303 installed on the water pipe 100 for isolating the space at the leak point, and a repair component 304 installed on the water pipe 100 for repairing leaks in the sewage pipe.
[0038] The active component 202 includes a support rod 202a disposed on a fixed ring 201, which is used to connect the water pipe 100 and provide support for the water pipe 100; a first connecting rod 202b disposed at the end of the support rod 202a away from the fixed ring 201; and an active wheel 202c rotatably disposed at the end of the first connecting rod 202b away from the support rod 202a. The first connecting rod 202b is used to mount the active wheel 202c, which is used to roll on the wall of the sewage pipe. The active wheel 202c is electrically connected to a power source.
[0039] Furthermore, the driven component 203 includes a first electric telescopic rod 203a disposed on the fixed ring 201, a second connecting rod 203b disposed at the end of the first electric telescopic rod 203a away from the fixed ring 201, and a driven wheel 203c disposed at the end of the second connecting rod 203b away from the first electric telescopic rod 203a. The second connecting rod 203b is used to connect the first electric telescopic rod 203a and the driven wheel 203c. The first electric telescopic rod 203a is used to form a stable triangular support with the support rod 202a. Moreover, the first electric telescopic rod 203a can be adapted to different pipe diameters by telescopic movement, thus expanding the application range.
[0040] During use, when the target sewage pipe needs to be inspected and repaired, the device is placed into the sewage pipe. At this time, the electric telescopic rod 1 is activated, so that the driven wheels 203c at both ends are pressed against the pipe wall and the driving wheel 202c is pressed against the pipe wall. The driving wheel 202c is activated, and the device moves inside the sewage pipe. The sonar detector 302 begins to detect. At this time, the detection results of the sonar detector 302 are transmitted to an external computer to generate a three-dimensional model of the inside of the pipe. Technicians determine the leak point based on the model.
[0041] Example 2
[0042] Reference Figure 1 This is the second embodiment of the present invention, which differs from the first embodiment in that the leakage point is sealed and cleaned.
[0043] Compared to Embodiment 1, the further isolation component 303 includes a first airbag 303a disposed at both ends of the water pipe 100 for sealing the space at the leakage point in the sewage pipe; a second airbag 303b disposed on one side of the two sets of first airbags 303a on the water pipe 100 for sealing the space at the leakage point in the sewage pipe to further enhance the sealing performance; a fixing bracket 303c disposed on the device body 301; and a cleaning component 303d disposed on the fixing bracket 303c. The fixing component is used to install the cleaning component 303d, and the cleaning component 303d is used to clean the sealing space in the sewage pipe to facilitate subsequent repair of the leakage point.
[0044] The cleaning component 303d includes an inlet pipe 303d-1 mounted on a mounting bracket 303c, which allows clean water to enter and clean the blocked section; a high-pressure nozzle 303d-2 located at the end of the inlet pipe 303d-1 near the mounting bracket 303c, which pressurizes the water in the inlet pipe 303d-1 into a high-speed water flow; and a pressure plate 303d-3 located within the high-pressure nozzle 303d-2, which receives part of the water flow pressure. The pressure plate 303d-3 is divided into... The device includes a horizontal plate and a vertical plate. The horizontal plate has a raised section on the side near the inlet pipe 303d-1 to facilitate water flow interception. The vertical plate is slidably connected to the inner wall of the nozzle of the high-pressure nozzle 303d-2 via a limiting block. A tension spring 303d-4 is located at the bottom of the pressure plate 303d-3 to stabilize the movement of the pressure plate 303d-3. A water pumping hose 303d-5 is located on the main body 301 of the device and is connected to a pumping device to remove sewage from the blocked section, preventing sewage from affecting the repair work of the leak point.
[0045] During operation, once the leak point is located, the control wheel 202c moves back and forth, aligning the repair component 304 with the leak point at the same cross-section. The first airbags 303a at both ends inflate, filling the entire sewage pipe. Sewage is then diverted through the water pipe 100. At this point, the pumping equipment is activated, and the sludge and accumulated water in the blocked section are extracted via the pumping hose 303d-5. The high-pressure nozzle 303d-2 is then activated. As water is about to spray from the nozzle of the high-pressure nozzle 303d-2, a portion of the water is intercepted by the pressure plate 303d-3. The pressure plate 303d-3 experiences an upward force, pulling the tension spring 303d-4. As the pressure plate 303d-3 moves upward... The pressure plate 303d-3 gradually covers the nozzle of the high-pressure nozzle 303d-2, causing the nozzle size of the high-pressure nozzle 303d-2 to gradually decrease. Simultaneously, the pressure of the high-pressure nozzle 303d-2 gradually increases, and its range expands. The high-speed water jet from the high-pressure nozzle 303d-2 propels the leak point in a straight line, pushing the dirt away and reducing the possibility of dirt flowing back to the leak point. This continues until the pressure on the pressure plate 303d-3 equals the tension of the tension spring 303d-4. At this point, the high-speed water jet no longer pushes away from the high-speed nozzle, cleaning the pipe wall deposits within the sealing section and discharging them using a pump. Then, the second airbag 303b inflates, performing a secondary sealing of the sealing section.
[0046] The remaining structure is the same as that in Example 1.
[0047] Example 3
[0048] Reference Figure 1This is the third embodiment of the present invention, which differs from the second embodiment in that: the leak point is repaired.
[0049] Compared to Embodiment 2, the repair component 304 further includes a movable part 304a disposed on the water pipe 100, a top support 304b disposed on the movable part 304a, and a filler 304c disposed on the top support 304b. The movable part 304a is used to rotate the top support 304b so that the filler 304c fits into the leak, facilitating repair.
[0050] The movable component 304a includes a ring 304a-1 rotatably mounted on the outer wall of the water pipe 100, a second electric telescopic rod 304a-2 positioned between the ring 304a-1 and the main body 301, a rotating shaft 304a-3 mounted on the ring 304a-1, and an internal gear 304a-4 located outside the rotating shaft 304a-3 and meshing with it. The second electric telescopic rod 304a-2 is used to slide the ring 304a-1 on the water pipe 100, so that the filling component 304c is aligned with the leak point in the horizontal direction. The internal gear 304a-4 is electrically connected to a power source, and the internal gear 304a-4 adjusts the filling component 304c to be aligned with the leak point in the vertical direction by driving the rotating shaft 304a-3 to rotate.
[0051] The top support 304b includes a third electric telescopic rod 304b-1 mounted on the internal gear 304a-4, a top support pad 304b-2 mounted on the end of the third electric telescopic rod 304b-1 away from the internal gear 304a-4, and a fourth electric telescopic rod 304b-3 mounted on the internal gear 304a-4. The third electric telescopic rod 304b-1 and the fourth electric telescopic rod 304b-3 are used to extend and retract to abut against the inner wall of the sewage pipe, so that the filling part 304c is firmly fixed. The top support pad 304b-2 is used to increase the stability of the abutment between the third electric telescopic rod 304b-1 and the inner wall of the sewage pipe.
[0052] The third electric telescopic rod 304b-1 and the fourth electric telescopic rod 304b-3 are arranged opposite each other on the internal gear 304a-4, so that the reaction force of the sewage pipe wall on the third electric telescopic rod 304b-1 and the reaction force of the sewage pipe wall on the fourth electric telescopic rod 304b-3 are on the same straight line, which increases the stability of the contact and prevents the filling part 304c from shifting.
[0053] The filling component 304c includes a repair groove 304c-1 located at the end of the fourth electric telescopic rod 304b-3 away from the internal gear 304a-4, a fastening rubber gasket 304c-2 located on the repair groove 304c-1, a pressure relief hole 304c-3 located on the repair groove 304c-1, and a grouting and cleaning valve 304c-4 located on the repair groove 304c-1. The repair groove 304c-1 is used to inject grout to fix the fastening rubber gasket, the fastening rubber gasket is used to seal the leakage point, the pressure relief valve is used to discharge excess air and water, and the grouting and cleaning valve 304c-4 is divided into a grouting hole and a cleaning hole, which are used to connect the grouting equipment to inject the blade and clean water, respectively.
[0054] During use, after the second airbag 303b is activated, the second electric telescopic rod 304a-2 is activated to adjust the horizontal relative position of the repair groove 304c-1 of the filling part with the leak point. The internal gear 304a-4 is activated to drive the rotating shaft 304a-3 to adjust the vertical relative position of the repair groove 304c-1 with the leak point. When the repair groove 304c-1 and the leak point are aligned, the fourth electric telescopic rod 304b-3 is activated to make the fastening rubber gasket 304c-2 fit with the leak point. The third electric telescopic rod 304b-1 is activated to work with the top support gasket 304b-2 to press against the pipe wall, and the external grouting is initiated. Open the pressure relief hole 304c-3 and the grouting hole. After 10 seconds, close the pressure relief hole 304c-3. The external grouting machine begins grouting repair through the grouting hole. The grouting time is 5 minutes. At this time, close the grouting hole and open the cleaning hole. The external grouting machine begins to inject clean water to clean the grouting pipe. After a period of time, the grout in the repair tank 304c-1 solidifies. Retrieve the third electric telescopic rod 304b-1 and the fourth electric telescopic rod 304b-3. Open the grouting hole and inject clean water into the external grouting machine to clean the repair tank 304c-1. The first airbag 303a and the second airbag 303b are deflated to return to their initial state. The repair is complete.
[0055] The remaining structure is the same as that in Example 2.
[0056] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims. Furthermore, for the purpose of providing a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features not relevant to the currently considered best mode for carrying out the invention, or those features not relevant to implementing the invention) may be omitted.
[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention 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 the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.
Claims
1. A device for identifying and cleaning / maintaining leaks at the bottom of sewage pipes, characterized in that: This includes a water pipe, which is used to allow sewage to flow through the sewage pipe during the repair of leaks; The forward component includes a fixed ring disposed on the water pipe, an active component disposed on the fixed ring, and a driven component disposed on the fixed ring; The repair component includes a device body disposed on the water pipe, a sonar detector disposed on the device body, an isolation component disposed on the water pipe, and a repair component disposed on the water pipe; The isolation assembly includes first airbags disposed at both ends of the water pipe, second airbags disposed on the water pipe with two sets of first airbags close to each other, a fixing frame disposed on the main body of the device, and a cleaning component disposed on the fixing frame; The cleaning component includes a water inlet pipe mounted on the fixed frame, a high-pressure nozzle mounted on one end of the water inlet pipe near the fixed frame, a pressure plate mounted in the high-pressure nozzle, a tension spring mounted at the bottom of the pressure plate, and a water pumping hose mounted on the main body of the device. The pressure plate is divided into horizontal and vertical plates. The horizontal plate has a raised side near the water inlet pipe to facilitate water flow interception. The vertical plate is slidably connected to the inner wall of the spray nozzle of the high-pressure nozzle through a limiting block. The repair assembly includes a movable part disposed on the water pipe, a top support disposed on the movable part, and a filler disposed on the top support; The movable component includes a ring disposed on the outer wall of the water pipe, a second electric telescopic rod disposed between the ring and the main body of the device, a rotating shaft disposed on the ring, and an internal gear disposed outside the rotating shaft and meshing with the rotating shaft; The second electric telescopic rod adjusts the horizontal relative position of the repair groove of the filling part and the leak point, and the internal gear drives the rotating shaft to adjust the vertical relative position of the repair groove and the leak point.
2. The sewage pipe bottom leakage identification and cleaning and maintenance device according to claim 1, characterized in that: The active component includes a support rod disposed on the fixed ring, a first connecting rod disposed at the end of the support rod away from the fixed ring, and an active wheel rotatably disposed at the end of the first connecting rod away from the support rod.
3. The sewage pipe bottom leakage identification and cleaning and maintenance device according to claim 2, characterized in that: The driven component includes a first electric telescopic rod disposed on the fixed ring, a second connecting rod disposed at the end of the first electric telescopic rod away from the fixed ring, and a driven wheel disposed at the end of the second connecting rod away from the first electric telescopic rod.
4. The sewage pipe bottom leakage identification and cleaning and maintenance device according to claim 3, characterized in that: The top support includes a third electric telescopic rod disposed on the internal gear, a top support pad disposed on the end of the third electric telescopic rod away from the internal gear, and a fourth electric telescopic rod disposed on the internal gear.
5. The sewage pipe bottom leakage identification and cleaning and maintenance device according to claim 4, characterized in that: The third electric telescopic rod and the fourth electric telescopic rod are arranged opposite to each other on the internal gear.
6. The sewage pipe bottom leakage identification and cleaning and maintenance device according to claim 5, characterized in that: The repair groove is located at the end of the fourth electric telescopic rod away from the internal gear. The filling component also includes a fastening rubber gasket on the repair groove, a pressure relief hole on the repair groove, and a grouting and cleaning valve on the repair groove.