Self-driving sewage disposal device for municipal pipeline

Abstract

The invention relates to the technical field of devices for municipal engineering, in particular to a self-driving sewage disposal device for municipal pipelines. The device comprises a first sewage disposal mechanism which comprises an inner pipeline and a dredging head arranged at one end of the inner pipeline, and the dredging head is provided with a first high-pressure water outlet impacting in the advancing direction of the municipal pipeline and further provided with a plurality of second high-pressure water outlets inclining backwards; the second sewage disposal mechanism comprises an outer pipeline and a dredging ring, the outer pipeline is arranged outside the inner pipeline in a sleeving mode, the dredging ring is arranged on the outer wall of the outer pipeline in a sleeving mode, and a plurality of third high-pressure water outlets inclining backwards are formed in the dredging ring; the multifunctional connecting mechanism comprises a first end cover, a supporting column, an annular plate and bristles. And the water pipe connecting mechanism comprises a second end cover, a first water pipe and a second water pipe. The dredging head and the dredging ring can move stably in the middle of the municipal pipeline, the inner wall of the municipal pipeline is impacted by multiple water flows and cleaned by the bristles, and the cleanliness and the cleaning efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of municipal engineering devices, in particular to a municipal pipeline self-driving sewage cleaning device. Background Art

[0002] Cleaning municipal pipes is an important part of urban maintenance. Ensuring the smooth flow of drainage systems is crucial to preventing floods and ensuring environmental hygiene.

[0003] The blockage of municipal pipelines is mostly caused by the retention, deposition and accumulation of pollutants such as mud, sand, flakes, blocks and oil on the inner wall of municipal pipelines. At present, in the actual sewage cleaning process of municipal pipelines, the most commonly used dredger is "water rat". "Water rat" consists of a head and a high-pressure water flow hose. The head is a cavity head with a hole at the front end and multiple holes at the back end. The hole at the front end impacts the pollutants in the municipal pipeline, and the side hole at the back end generates forward momentum, pushing the entire head forward.

[0004] The above-mentioned commonly used plumbing tools still have some shortcomings, such as: (1) the movement of the lower hose driven by the plumbing head is uncontrollable, and there are uncontrollable cleaning areas, which makes it difficult to quickly clean the inner wall of the pipe; (2) the plumbing head is generally located at the lower edge of the inner wall of the pipe. For municipal pipes with larger inner diameters, the cleaning degrees of the upper edge, side edge and lower edge of the inner wall are different. The inner wall of the pipe that has not been thoroughly cleaned still retains some pollutants. This part of pollutants is more likely to serve as the core of pollutant accumulation during the subsequent use of the municipal pipe, resulting in the accumulation and deposition of more pollutants on the inner wall of the municipal pipe in a short period of time. Summary of the invention

[0005] The purpose of the present invention is to provide a self-propelled sewage cleaning device for municipal pipelines, which overcomes the shortcomings of the aforementioned prior art. The dredging head can move smoothly in the middle of the municipal pipeline, and the inner wall of the municipal pipeline is impacted by multiple water flows and cleaned by bristles, thereby improving the cleanliness and cleaning efficiency.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A municipal pipeline self-driving sewage cleaning device, comprising:

[0008] A first cleaning mechanism, the first cleaning mechanism comprises an inner pipe and a dredging head connected to one end of the inner pipe, the inner pipe is a plastic pipe or a light metal pipe, the dredging head is a cavity structure, the dredging head is provided with a first high-pressure water outlet that impacts in the forward direction of the municipal pipe, the first high-pressure water outlet is mainly used to impact and break the blockage in the pipe to form a forward space for the dredging head, the dredging head is also provided with a plurality of second high-pressure water outlets inclined backwards, the second high-pressure water outlets impact the wall of the municipal pipe to generate a forward thrust, and also generate a high-pressure liquid cleaning effect on the inner wall of the municipal pipe;

[0009] A second cleaning mechanism, the second cleaning mechanism includes an outer pipe and a dredging ring, the length of the outer pipe is less than the length of the inner pipe, and the outer pipe is also a plastic pipe or a light metal pipe, the outer pipe is sleeved on the outside of the inner pipe, and there is a gap between the outer pipe and the inner pipe, the dredging ring is sleeved on the outer wall of the outer pipe and communicated with the inner cavity of the outer pipe, and a plurality of third high-pressure water outlets inclined backward are provided on the dredging ring, the third high-pressure water outlets impact the municipal pipe wall to generate forward thrust, and also generate a secondary high-pressure liquid cleaning effect on the inner wall of the municipal pipe;

[0010] A multifunctional connecting mechanism, the multifunctional connecting mechanism comprises a first end cover, a support, an annular plate and bristles, the first end cover seals and connects one end of the outer pipe to the outer wall of the inner pipe, a plurality of supports are arranged on the side wall of the first end cover, the ends of the supports are connected to an annular plate at the same time, and the outer wall of the annular plate is provided with bristles for cleaning the wall of the municipal pipe; the multifunctional connecting mechanism has many functions, for example: function 1: the first end cover plays a role of connecting the outer pipe and the inner pipe; function 2: at the same time, the multifunctional connecting mechanism also plays a role of cleaning the inner wall of the municipal pipe through the arrangement of the annular plate and the bristles The bristles here can be detachably connected to the annular plate by means of a Velcro structure, a snap-on structure, etc., which is convenient for replacement, and the annular plate and the bristles move along the inner wall; Function 3: The annular plate and the bristles not only clean the inner wall of the municipal pipeline, but also play a role in stabilizing and guiding the first cleaning mechanism and the second cleaning mechanism; Function 4: The multifunctional connecting mechanism is located between the dredging head of the first cleaning mechanism and the dredging ring of the second cleaning mechanism, and the inner wall of the pipeline after the initial high-pressure cleaning is brushed and scraped, and then a high-pressure water flow cleaning is performed, which greatly improves the cleaning degree and cleaning efficiency of the municipal pipeline;

[0011] A water pipe connecting mechanism, the water pipe connecting mechanism includes a second end cover, a first water pipe and a second water pipe. The first water pipe and the second water pipe can be used to transport water, and can also be used to transport other liquids, not limited to water. The first water pipe and the second water pipe are both hoses, and have good wear resistance and can be towed. The second end cover connects the other end of the outer pipe to the rear end of the inner pipe, and cooperates with the first end cover to achieve a stable connection between the inner pipe and the outer pipe. The end of the first water pipe passes through the second end cover to communicate with the inner pipe, providing a liquid source for the dredging head. The end of the second water pipe passes through the second end cover to communicate with the gap between the outer pipe and the inner pipe, providing a liquid source for the dredging ring.

[0012] The first cleaning mechanism, the second cleaning mechanism, the multifunctional connecting mechanism and the water pipe connecting mechanism are all made of lightweight materials to reduce weight as much as possible to facilitate forward movement under the thrust generated by the high-pressure water flow. The second high-pressure water outlet and the third high-pressure water outlet both generate forward driving force. Even if the first water pipe and the second water pipe generate a certain deflection force and movement resistance on the entire device due to the friction during the towing process, the movement resistance can also be achieved under the high impact force of the second high-pressure water outlet and the third high-pressure water outlet, and the action of the brush buffer to avoid movement jamming.

[0013] Furthermore, it also includes a guiding and moving mechanism, which is also made of lightweight materials. The guiding and moving mechanism includes a support rod and a roller. One end of the support rod is connected to the outer wall of the outer pipe, and the other end of the support rod is connected to the roller. The roller can roll along the inner wall of the municipal pipe. The setting of the guiding mechanism can make the movement of the device smoother.

[0014] Furthermore, the guiding moving mechanism is provided with multiple third high-pressure water outlets, and the positions of some of the third high-pressure water outlets correspond to the positions of the rollers. The third high-pressure water outlets impact the rollers to generate driving force on the rollers. Under the action of this driving force, the rollers roll, driving the entire device forward.

[0015] Furthermore, the roller is provided with a conical groove along the circumference, and part of the third high-pressure water outlet impacts the conical groove of the roller. This design promotes the pushing effect of the water flow roller.

[0016] Furthermore, the guiding movable mechanism also includes a hook rod, one end of the support rod is hinged to the outer wall of the outer pipe, the support rod is connected to one end of the hook rod by a first ring buckle, and the other end of the hook rod is detachably connected to a second ring buckle arranged on the wall of the outer pipe. The guiding movable mechanism does not need to be opened in municipal pipes with a low degree of blockage, and can be stored on the outer pipe. The storage method can be fixed with an elastic rope or by adding another ring buckle that cooperates with the hook rod. When the guiding movable mechanism needs to be used, the support rod is opened through the hinged end, and the hook rod is hooked on the second ring buckle to achieve the fixation of the guiding movable mechanism.

[0017] Furthermore, the maximum outer diameter of the clearing head is smaller than the outer diameter of the inner pipe, so that there is a pressurizing effect inside the clearing head; a through hole is opened on the first end cover, and an elastic sealing layer is arranged in the through hole, and the first end cover is sealed on the outer wall of the inner pipe through the through hole and the elastic sealing layer; the inner cavity of the first end cover is fixedly provided with a first supporting layer, and the first end cover is threadedly connected to the outer wall of the outer pipe, and at this time, the first supporting layer is supported on the inner wall of the outer pipe. Through this arrangement, multiple good effects can be achieved, including but not limited to: the multifunctional connecting mechanism can be removed from the entire device as a whole, aligned for cleaning, cleaning the gap between the inner pipe and the outer pipe, or replacing the bristle layer, etc.; the outer pipe is stably installed and stably supported on the outside of the inner pipe through the cooperation of the first end cover and the first supporting layer.

[0018] Furthermore, the inner cavity of the second end cover is fixedly provided with a second supporting layer and a third supporting layer. The second end cover is threadedly connected to the outer wall of the outer pipe through the side wall of the cover body, and is threadedly connected to the inner wall of the inner pipe through the third supporting layer. When the second end cover is installed, the second supporting layer is supported on the inner wall of the outer pipe. Through the cooperation of the second end cover and the second supporting layer, the outer pipe is stably installed and stably supported on the outside of the inner pipe. The internal space of the inner pipe and the space between the inner pipe and the outer pipe are separated by the third supporting layer to ensure that both spaces have stable input of high-pressure water flow.

[0019] Furthermore, a camera for observing the environment is provided on the outer wall of the pillar or the inner wall of the annular plate, and an electric-controlled valve capable of controlling the flow of liquid is provided on the second water pipe. Both the camera and the electric-controlled valve are connected to an external controller. In order to avoid excessive forward thrust, the operator can observe the internal cleaning condition through the camera, and then control the opening and closing of the solenoid valve to ensure that the entire device moves forward after the pollutants in the pipeline are stably impacted and opened.

[0020] The beneficial effects of the present invention are as follows: compared with the prior art, the municipal pipeline self-driven sewage cleaning device of the present invention has the following advantages: the unclogging head and the unclogging ring are located in the middle of the pipeline and can move forward smoothly; the multifunctional connecting mechanism is located between the unclogging head of the first cleaning mechanism and the unclogging ring of the second cleaning mechanism, and the inner wall of the pipeline after the preliminary high-pressure cleaning is brushed and scraped clean, and then a high-pressure water flow cleaning is performed, which greatly improves the cleaning degree and cleaning efficiency of the municipal pipeline; the roller in the guide mechanism rolls under the impact of the water flow, which can make the movement of the device more stable; the multifunctional connecting mechanism can be removed from the entire device as a whole, aligned for cleaning, the gap between the inner pipeline and the outer pipeline can be cleaned, or the brush bristle layer can be replaced, etc.; in order to avoid excessive forward thrust, the operator can observe the internal cleaning situation through the camera, and then control the opening and closing of the solenoid valve to ensure that the pollutants in the pipeline are stably impacted and opened before the entire device moves forward. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention from another angle;

[0023] Figure 3 This is a schematic diagram of the structural disassembly of Embodiment 1 of the present invention;

[0024] Figure 4 For the present invention Figure 3 A schematic diagram of the structure from another angle;

[0025] Figure 5 This is a schematic diagram of the overall structure of Example 2 of the present invention;

[0026] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention from another angle;

[0027] Figure 7 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0028] Among them, 1 a first cleaning mechanism, 11 an inner pipe, 12 a dredging head, 13 a first high-pressure water outlet, 14 a second high-pressure water outlet, 2 a second cleaning mechanism, 21 an outer pipe, 22 a dredging ring, 23 a third high-pressure water outlet, 3 a multifunctional connecting mechanism, 31 a first end cover, 32 a pillar, 33 an annular plate, 34 bristles, 35 a perforation, 36 a first supporting layer, 4 a water pipe connecting mechanism, 41 a second end cover, 42 a first water pipe, 43 a second water pipe, 44 a second supporting layer, 45 a third supporting layer, 5 a guiding moving mechanism, 51 a supporting rod, 52 a roller, 53 a conical groove, 54 a hook rod, 55 a first buckle, 56 a second buckle, 6 a camera, and 7 an electric control valve;

[0029] The complete length of the first water pipe 42 is not shown. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] Example 1

[0032] like Figure 1-4 In the embodiment shown, a municipal pipeline self-driving sewage cleaning device includes:

[0033] A first cleaning mechanism 1, the first cleaning mechanism 1 comprises an inner pipe 11 and a dredging head 12 connected to one end of the inner pipe 11, the inner pipe 11 is a plastic pipe or a light metal pipe, the dredging head 12 is a cavity structure, and a first high-pressure water outlet 13 is provided on the dredging head 12 for impacting in the forward direction of the municipal pipe, the first high-pressure water outlet 13 is mainly used to impact and break the blockage in the pipe to form a forward space for the dredging head 12, and the dredging head 12 is also provided with a plurality of second high-pressure water outlets 14 inclined backward, the second high-pressure water outlets 14 impact the wall of the municipal pipe to generate a forward thrust, and also generate a high-pressure liquid cleaning effect on the inner wall of the municipal pipe;

[0034] A second cleaning mechanism 2, the second cleaning mechanism 2 comprises an outer pipe 21 and a dredging ring 22, the length of the outer pipe 21 is less than the length of the inner pipe 11, and the outer pipe 21 is also a plastic pipe or a light metal pipe, the outer pipe 21 is sleeved on the outside of the inner pipe 11, and there is a gap between the outer pipe 21 and the inner pipe 11, the dredging ring 22 is sleeved on the outer wall of the outer pipe 21 and communicated with the inner cavity of the outer pipe 21, and a plurality of third high-pressure water outlets 23 tilted backward are provided on the dredging ring 22, the third high-pressure water outlets 23 impact the municipal pipe wall to generate forward thrust, and also generate a secondary high-pressure liquid cleaning effect on the inner wall of the municipal pipe;

[0035] The multifunctional connecting mechanism 3 includes a first end cover 31, a support 32, an annular plate 33 and bristles 34. The first end cover 31 seals and connects one end of the outer pipe 21 to the outer wall of the inner pipe 11. The side wall of the first end cover 31 is provided with a plurality of supports 32. The ends of the supports 32 are simultaneously connected with an annular plate 33. The outer wall of the annular plate 33 is provided with bristles 34 for cleaning the wall of the municipal pipe. The multifunctional connecting mechanism 3 has many functions, for example: Function 1: The first end cover 31 serves as a connection between the outer pipe 21 and the inner pipe 11; Function 2: At the same time, the multifunctional connecting mechanism 3 also serves as a The bristles 34 can be detachably connected to the annular plate 33 by means of a Velcro structure, a buckle structure, etc., so as to facilitate replacement. The annular plate 33 and the bristles 34 move along the inner wall; Function 3: The annular plate 33 and the bristles 34 not only clean the inner wall of the municipal pipeline, but also play a role in stabilizing and guiding the first cleaning mechanism and the second cleaning mechanism; Function 4: The multifunctional connecting mechanism 3 is located between the dredging head 12 of the first cleaning mechanism and the dredging ring 22 of the second cleaning mechanism, and the inner wall of the pipeline after preliminary high-pressure cleaning is brushed and scraped, and then a high-pressure water flow cleaning is performed, which greatly improves the cleaning degree and cleaning efficiency of the municipal pipeline;

[0036] A water pipe connecting mechanism 4, wherein the water pipe connecting mechanism 4 includes a second end cover 41, a first water pipe 42 and a second water pipe 43. The first water pipe 42 and the second water pipe 43 can be used to transport water, and can also be used to transport other liquids, not limited to water. The first water pipe 42 and the second water pipe 43 are both hoses, and have good wear resistance and can be towed. The second end cover 41 connects the other end of the outer pipe 21 to the rear end of the inner pipe 11, and cooperates with the first end cover 31 to achieve a stable connection between the inner pipe 11 and the outer pipe 21. The end of the first water pipe 42 passes through the second end cover 41 to communicate with the inner pipe 11, providing a liquid source for the dredging head 12. The end of the second water pipe 43 passes through the second end cover 41 to communicate with the gap between the outer pipe 21 and the inner pipe 11, providing a liquid source for the dredging ring 22. The first water pipe 42 and the second water pipe 43 are both connected to an external high-pressure liquid supply device.

[0037] The first cleaning mechanism 1, the second cleaning mechanism 2, the multifunctional connecting mechanism 3 and the water pipe connecting mechanism 4 are all made of lightweight materials to reduce weight as much as possible to facilitate moving forward under the thrust generated by the high-pressure water flow. The second high-pressure water outlet 14 and the third high-pressure water outlet 23 both generate a driving force for moving forward. Even if the first water pipe 42 and the second water pipe 43 generate a certain deflection force and movement resistance to the entire device due to the friction during the towing process, the movement resistance can also be achieved under the high impact force of the second high-pressure water outlet 14 and the third high-pressure water outlet 23, and the buffering effect of the bristles 34 to avoid movement jamming.

[0038] In this embodiment, the maximum outer diameter of the dredging head 12 is smaller than the outer diameter of the inner pipe 11, so that there is a pressurizing effect inside the dredging head 12; a through hole 35 is opened on the first end cover 31, and an elastic sealing layer is arranged in the through hole 35, and the first end cover 31 is sealed on the outer wall of the inner pipe 11 through the through hole 35 and the elastic sealing layer; the inner cavity of the first end cover 31 is fixedly provided with a first supporting layer 36, and the first end cover 31 is threadedly connected to the outer wall of the outer pipe 21, and at this time, the first supporting layer 36 is supported on the inner wall of the outer pipe 21. Through this arrangement, multiple good effects can be achieved, including but not limited to: the multifunctional connecting mechanism 3 can be removed from the entire device as a whole, aligned for cleaning, the gap between the inner pipe 11 and the outer pipe 21 can be cleaned, or the bristle 34 layer can be replaced, etc.; the outer pipe 21 is stably installed and stably supported on the outside of the inner pipe 11 through the cooperation of the first end cover 31 and the first supporting layer 36.

[0039] In this embodiment, the inner cavity of the second end cover 41 is fixedly provided with a second supporting layer 44 and a third supporting layer 45. The second end cover 41 is threadedly connected to the outer wall of the outer pipe 21 through the side wall of the cover body, and is threadedly connected to the inner wall of the inner pipe 11 through the third supporting layer 45. When the second end cover 41 is installed, the second supporting layer 44 is supported on the inner wall of the outer pipe 21. Through the cooperation of the second end cover 41 and the second supporting layer 44, the outer pipe 21 is stably installed and stably supported on the outside of the inner pipe 11. The internal space of the inner pipe 11 and the space between the inner pipe 11 and the outer pipe 21 are separated by the third supporting layer 45 to ensure that both spaces have stable input of high-pressure water flow.

[0040] Example 2

[0041] like Figure 5 and 6 In the shown embodiment 2, compared with embodiment 1, it also includes a guide moving mechanism 5, and the guide moving mechanism 5 is also made of lightweight material. The guide moving mechanism 5 includes a support rod 51 and a roller 52. One end of the support rod 51 is connected to the outer wall of the outer pipe 21, and the other end of the support rod 51 is connected to the roller 52. The roller 52 can roll along the inner wall of the municipal pipe. The setting of the guide mechanism can make the movement of the device smoother.

[0042] In this embodiment, the guiding moving mechanism 5 is provided with multiple third high-pressure water outlets 23, and the positions of some of the third high-pressure water outlets 23 correspond to the positions of the rollers 52. The third high-pressure water outlets 23 impact the rollers 52 to generate a driving force on the rollers 52. Under the action of this driving force, the rollers 52 roll, driving the entire device forward.

[0043] In this embodiment, the roller 52 is provided with a conical groove 53 along the circumferential direction, and part of the third high-pressure water outlet 23 impacts the conical groove 53 of the roller 52 . This design promotes the pushing effect of the water flow roller 52 .

[0044] In this embodiment, the guide movable mechanism 5 also includes a hook rod 54. One end of the support rod 51 is hinged to the outer wall of the outer pipe 21. The support rod 51 is connected to one end of the hook rod 54 through a first ring buckle 55. The other end of the hook rod 54 is detachably connected to a second ring buckle 56 arranged on the wall of the outer pipe 21. The guide movable mechanism 5 does not need to be opened in municipal pipes with a low degree of blockage, and can be stored on the outer pipe 21. The storage method can be fixed with an elastic rope or by adding another ring buckle that cooperates with the hook rod 54. When the guide movable mechanism 5 needs to be used, the support rod 51 is opened through the hinged end, and the hook rod 54 is hooked on the second ring buckle 56 to achieve the fixation of the guide movable mechanism 5.

[0045] Example 3

[0046] like Figure 7In the embodiment 3 shown, compared with the embodiment 2, the outer wall of the pillar 32 or the inner wall of the annular plate 33 is provided with a camera 6 for observing the environment, and the second water pipe 43 is provided with an electric control valve 7 capable of controlling the flow interruption. The camera 6 and the electric control valve 7 are both connected to an external controller. In order to avoid excessive forward thrust, the operator can observe the internal cleaning condition through the camera 6, and then control the opening and closing of the electromagnetic valve to ensure that the whole device moves forward after the pollutants in the pipeline are stably impacted. This embodiment is preferably used when the municipal pipeline is seriously blocked.

[0047] The above-mentioned specific implementations are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific implementations. Any appropriate changes or modifications made to them by ordinary technicians in the technical field that conform to the claims of the present invention shall fall within the patent protection scope of the present invention.

Claims

1. A municipal pipeline self-driving sewage cleaning device, characterized in that: include: A first cleaning mechanism, the first cleaning mechanism comprises an inner pipe and a dredging head arranged at one end of the inner pipe, the dredging head is a cavity structure, a first high-pressure water outlet is arranged on the dredging head to impact in the forward direction of the municipal pipe, and a plurality of second high-pressure water outlets inclined backward are also arranged on the dredging head, and the second high-pressure water outlets impact the wall of the municipal pipe to generate forward thrust; A second cleaning mechanism, the second cleaning mechanism comprises an outer pipe and a dredging ring, the outer pipe is sleeved on the outside of the inner pipe, and there is a gap between the outer pipe and the inner pipe, the dredging ring is sleeved on the outer wall of the outer pipe and communicated with the inner cavity of the outer pipe, and a plurality of third high-pressure water outlets inclined backward are arranged on the dredging ring, and the third high-pressure water outlets impact the wall of the municipal pipe to generate forward thrust; A multifunctional connecting mechanism, comprising a first end cover, a support, an annular plate and bristles, wherein the first end cover seals one end of the outer pipe to the outer wall of the inner pipe, a plurality of supports are arranged on the side wall of the first end cover, the ends of the supports are connected to an annular plate at the same time, and the outer wall of the annular plate is provided with bristles for cleaning the wall of the municipal pipe; A water pipe connecting mechanism, the water pipe connecting mechanism includes a second end cover, a first water pipe and a second water pipe, the second end cover connects the other end of the outer pipe with the rear end of the inner pipe, the end of the first water pipe passes through the second end cover and is connected to the inner pipe, and the end of the second water pipe passes through the second end cover and is connected to the gap between the outer pipe and the inner pipe.

2. A municipal pipeline self-driving sewage cleaning device according to claim 1, characterized in that: It also includes a guiding movement mechanism, which includes a support rod and a roller. One end of the support rod is connected to the outer wall of the outer pipe, and the other end of the support rod is connected to the roller. The roller can roll along the inner wall of the municipal pipe.

3. A municipal pipeline self-driving sewage cleaning device according to claim 2, characterized in that: The guide movement mechanism is provided with a plurality of parts, and the positions of some third high-pressure water outlets correspond to the positions of the rollers, and the third high-pressure water outlets impact the rollers to generate driving force for the rollers.

4. A municipal pipeline self-driving sewage cleaning device according to claim 3, characterized in that: The roller is provided with a conical groove along the circumferential direction, and part of the third high-pressure water outlet impacts the conical groove of the roller.

5. A municipal pipeline self-driving sewage cleaning device according to any one of claims 2-4, characterized in that: The guide movement mechanism also includes a hook rod, one end of the support rod is hinged to the outer wall of the outer pipe, the support rod is connected to one end of the hook rod through a first ring buckle, and the other end of the hook rod is detachably connected to a second ring buckle arranged on the outer pipe wall.

6. A municipal pipeline self-driving sewage cleaning device according to claim 1, characterized in that: The maximum outer diameter of the dredging head is smaller than the outer diameter of the inner pipe; a through hole is provided on the first end cover, an elastic sealing layer is arranged in the through hole, and the first end cover is sealed on the outer wall of the inner pipe through the through hole and the elastic sealing layer; a first supporting layer is fixedly arranged in the inner cavity of the first end cover, and after the first end cover is threadedly connected to the outer wall of the outer pipe, the first supporting layer is supported on the inner wall of the outer pipe.

7. A municipal pipeline self-driving sewage cleaning device according to claim 1 or 6, characterized in that: The length of the outer pipe is shorter than the length of the inner pipe.

8. A municipal pipeline self-driving sewage cleaning device according to claim 1, 2 or 6, characterized in that: The inner cavity of the second end cover is fixedly provided with a second supporting layer and a third supporting layer. The second end cover is threadedly connected to the outer wall of the outer pipe through the side wall of the cover body, and is threadedly connected to the inner wall of the inner pipe through the third supporting layer. When the second end cover is installed, the second supporting layer is supported on the inner wall of the outer pipe.

9. A municipal pipeline self-driving sewage cleaning device according to claim 1, 2 or 6, characterized in that: A camera for observing the environment is arranged on the outer wall of the pillar or the inner wall of the annular plate, and an electric control valve capable of controlling the flow of liquid is arranged on the second water pipe. Both the camera and the electric control valve are connected to an external controller.

10. A municipal pipeline self-driving sewage cleaning device according to claim 1, characterized in that: The inner pipe and the outer pipe are both plastic pipes, and the first water pipe and the second water pipe are hoses.

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