Drainage pipe network inspection and maintenance device

Abstract

The invention relates to an inspection and maintenance device for a drainage pipe network. The inspection and maintenance device comprises a blocking device, a moving device, a suction flushing device and a rolling brush device, the blocking device comprises a first baffle and a second baffle, and the first baffle and the second baffle are arranged in the drainage pipeline in a spaced mode and form an inspection area; the moving device comprises a first moving assembly and a second moving assembly; the first moving assembly and the second moving assembly are connected together through the connecting frame. The rolling brush device comprises a rotating sleeve, a gear set, a motor, a rolling brush handle and a rolling brush; the suction flushing device comprises a water tank, a pump, a suction pipe, a suction head, a flushing disc and a flushing head; the water tank is fixed to the connecting frame, a water outlet of the water tank is communicated with the flushing head through a pipeline, and the flushing head is arranged on the flushing disc and faces the inner wall of the pipeline. Through cooperation of the rolling brush, the suction flushing system, the driving system and the pipeline environment, the problem that the cleaning effect is poor due to impurity accumulation of a traditional brush is fundamentally solved, and the impurity stripping and discharging efficiency is enhanced through the water source characteristic.

Description

Technical Field

[0001] This invention relates to the field of drainage pipe network inspection and maintenance technology, specifically to a drainage pipe network inspection and maintenance device. Background Technology

[0002] As the "blood vessels" of the urban water cycle system, the smooth flow of drainage pipe networks directly affects urban flood control, sewage collection and treatment, and the ecological balance of the aquatic environment. During long-term operation, the inner walls of the pipes accumulate stubborn pollutants such as silt, oil, and fibers carried by flowing sewage. If these accumulated impurities are not cleaned in time, they will gradually encroach on the effective water flow cross-section, leading to a decrease in drainage capacity; in severe cases, they can cause pipe blockage, localized corrosion, and even pipe rupture due to pressure imbalance, increasing maintenance costs and potentially polluting surrounding soil and groundwater. Therefore, regular and efficient inspection and maintenance of drainage pipe networks are the core guarantee for maintaining their long-term stable operation. Currently, the cleaning and maintenance of drainage pipe networks mainly relies on two methods: one is manual entry into the pipes using simple tools (suitable for large-diameter pipes), and the other is mechanical cleaning using automated devices (suitable for small and medium-diameter pipes). Among these, automated devices have become the mainstream choice due to their high efficiency and safety; however, existing devices still face significant technical limitations in the core cleaning process. Existing automated cleaning devices generally use fixed-length brushes or rollers as the core cleaning components. Their working principle involves a motor driving the brush to rotate, using the mechanical friction between the bristles and the inner wall of the pipe to remove accumulated impurities. This structure results in significant problems with bristle accumulation and secondary contamination. Fiber impurities inside the pipe (such as plastic bag fragments and hair) easily become entangled in the bristle gaps, while sludge adheres to the bristle surface due to moisture evaporation, creating a vicious cycle of "cleaning - accumulation - secondary contamination." As the operation time increases, the impurities carried by the bristles re-adhere to the cleaned inner wall with the rotation, resulting in insufficient cleaning effectiveness. Frequent shutdowns and brush cleaning are necessary to maintain a basic level of cleaning, severely impacting operational efficiency. Furthermore, existing devices only optimize cleaning tools by increasing friction intensity, neglecting to consider their interaction with the water environment within the pipes. They cannot utilize the limited water remaining in the pipes for real-time cleaning of the brush bristles, nor do they possess a dynamic adjustment mechanism for accumulated debris. This results in a paradox: "ineffective cleaning" in areas with dense debris and "excessive wear" in areas with sparse debris. This design flaw makes existing devices unable to meet the practical demands for "thorough cleaning and efficient operation" in complex pipe network environments, becoming a key bottleneck restricting the improvement of drainage pipe network maintenance quality. Summary of the Invention

[0003] Therefore, the purpose of this invention is to provide a drainage pipe network inspection and maintenance device, which effectively solves the problems of poor cleaning effect and low cleaning efficiency of existing drainage pipe network cleaning structures.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a drainage pipe network inspection and maintenance device, comprising a blocking device, a moving device, a suction and flushing device, and a roller brush device; the blocking device includes a first baffle and a second baffle, which are spaced apart in the drainage pipe to form an inspection area; the moving device includes a first moving component and a second moving component; the first moving component and the second moving component are connected together by a connecting frame and are supported from both ends of the connecting frame to move in the pipe; The roller brush device includes a rotating sleeve, a gear set, a motor, a roller brush handle, and a roller brush. The rotating sleeve is rotatably mounted on a connecting frame and is located on one side of the first moving component. The motor is fixed on the first moving component and is connected to the rotating sleeve through the gear set. A roller brush handle is provided on the side of the rotating sleeve, and a roller brush is fixed at the end of the roller brush handle. The suction and rinsing device includes a water tank, a pump, a suction pipe, a suction head, a rinsing disc, and a rinsing head. The water tank is fixed on a connecting frame, and its inlet is connected to the suction pipe via the pump. The suction head is provided at the end of the suction pipe. The outlet of the water tank is connected to the rinsing head via a pipe. The rinsing disc is fixed at the end of the second movable component, and the rinsing head is placed on the rinsing disc and faces the inner wall of the pipe.

[0005] Furthermore, both the first and second moving components include a fixed base, a telescopic cylinder, an adjusting sleeve, an adjusting rod, a swing arm, and a moving wheel; the fixed base is provided with a positioning rod, the adjusting sleeve is slidably fitted onto the positioning rod, the telescopic cylinder is disposed between the adjusting sleeve and the fixed base to change the position of the adjusting sleeve, the swing arm is hinged to the fixed base, both ends of the adjusting rod are hinged between the adjusting sleeve and the middle of the swing arm, and the moving wheel is disposed at the end of the swing arm.

[0006] Furthermore, the moving wheel includes a driven wheel and an electrically driven driving wheel, and the swing arm is provided with three rods, including a side rod and a middle rod. The side rods are located on both sides of the lower part, and the middle rod is located at the center of the upper part. The electrically driven driving wheel is located at the end of the middle rod, and the driven wheel is located at the end of the side rod.

[0007] Furthermore, a drive seat is provided on the fixed base, and an electric drive blade is provided at the bottom of the drive seat.

[0008] Furthermore, the connecting frame includes a connecting shaft, a first connecting plate, a second connecting plate, and a connecting rod. The connecting shaft is fixed to a fixed seat via a flange. The first connecting plate is fixed to the end of the connecting shaft. The second connecting plate is fixed to a fixed seat of the second moving component. The connecting rod is fixed between the first and second connecting plates. The rotating sleeve is rotatably mounted on the connecting shaft. The water tank is positioned between the first and second connecting plates.

[0009] Furthermore, a support is provided on the connecting rod, and the water tank is fixed on the support.

[0010] Furthermore, the suction tube includes an upper sleeve and a lower sleeve, with the upper sleeve threadedly connected inside the lower sleeve to adjust the height of the suction head. The suction head includes an inner mesh cover and an outer mesh cover, with an outer mesh cover provided on the outside of the inner mesh cover. The outer mesh cover is fixed to the bottom of the upper sleeve via a connector.

[0011] Furthermore, a camera is provided in the middle of the rinsing tray, and a transparent cover is provided on the outside of the camera.

[0012] Furthermore, the outlet end of the flushing head is provided with a front nozzle and a side nozzle; the side nozzle is angled toward the front end of the flushing disc, and the front nozzle is perpendicular to the inner wall of the pipe.

[0013] Furthermore, the rinsing tray is provided with a slot corresponding to the moving device. According to the position of the slot, the rinsing tray is divided into a rinsing area and a non-rinsing area. The rinsing head is set in the rinsing area and faces outward.

[0014] The beneficial effects of the above technical solution are as follows: Addressing the problems in the maintenance of drainage pipe networks, impurities often accumulate on the inner walls of the pipes. Existing technologies generally use brushes for cleaning, but this method is prone to impurity buildup, resulting in poor cleaning effectiveness. Therefore, this embodiment incorporates a water baffle inside the pipe, maintaining a certain height of water within the drainage pipe. Under these conditions, the drainage pipe network inspection and maintenance device enables cleaning and maintenance of the drainage network. The water baffle maintains a certain height of water within the pipe, providing a real-time cleaning medium for the roller brush. After wiping the inner wall, the roller brush naturally immerses itself in the retained water. The water flow, through the permeation and scouring action between the bristles, removes attached impurities (such as silt and fibers) from the bristles. The impurities move with the water flow towards the drainage end (and are eventually discharged through the gaps in the water baffle). This continuous process of wiping, immersion, and impurity removal keeps the roller brush clean at all times, avoiding the reduced cleaning effectiveness caused by impurity accumulation in traditional brushes.

[0015] This device enhances the cleaning effect through a triple-synergistic process within the water level environment created by the baffle plate: the side nozzles of the suction flushing device spray water obliquely in front of the roller brush, pre-wetting and softening surface impurities that have not been removed by the roller brush; the front nozzle applies high-pressure impact to residual impurities; the roller brush first physically rubs away the adhesion between impurities and the inner wall; and the retained water source creates buoyancy to lift loosened impurities, reducing their adhesion to the inner wall. With these three factors combined, the removal efficiency of accumulated impurities is increased by more than 60% compared to traditional single-brush cleaning, solving the problem of insufficient cleaning with traditional brushes.

[0016] This invention fundamentally solves the problem of poor cleaning effect caused by the accumulation of impurities in traditional brushes by coordinating the roller brush, suction rinsing, drive system and water storage pipe environment. At the same time, it enhances the efficiency of impurity removal and discharge by utilizing the characteristics of water source. Ultimately, in solving the core pain point of impurities accumulating on the inner wall, it achieves an upgrade from passive wiping to active cleaning + self-cleaning + impurity discharge, significantly reducing the risk of secondary blockage of pipes and extending the maintenance cycle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the present invention; Figure 2 for Figure 1 Front view structural diagram; Figure 3 for Figure 1 A schematic diagram of the right-side view structure; Figure 4 for Figure 1 A schematic diagram of the left-side view structure; Figure 5 This is a schematic diagram of one embodiment of the present invention; Figure 6 This is a schematic diagram of another embodiment of the present invention; Figure 7 This is a schematic diagram of the implementation structure of the suction and flushing device; Figure 8 This is a schematic diagram of the implementation structure of the flushing head; Figure 9 This is a schematic diagram of the camera's implementation structure; Figure 10 This is a schematic diagram of the construction structure of the present invention.

[0018] Reference numerals: 1-First moving assembly; 101-First fixed base; 102-Second fixed base; 103-Positioning rod; 104-Adjusting sleeve; 105-Telescopic cylinder; 106-Swing rod; 1061-Side rod; 1062-Center rod; 107-Adjusting rod; 108-Moving wheel; 2-Second moving assembly; 3-Connecting frame; 301-Connecting shaft; 302-First connecting plate; 303-Second connecting plate; 304-Connecting rod; 4-Roller brush device. 401-Motor, 402-Gear set, 403-Rotating sleeve, 404-Roller brush handle, 404-Roller brush; 5-Suction rinsing device, 501-Suction head, 502-Upper sleeve, 503-Lower sleeve, 504-Pump, 505-Water tank, 506-Rinsing disc, 507-Rinsing head, 5071-Front nozzle, 5072-Side nozzle, 6-Pipeline, 7-First baffle, 8-Second baffle, 9-Water source, 10-Camera, 11-Transparent cover. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1: This example aims to provide a drainage pipe network inspection and maintenance device, mainly used for the maintenance and cleaning of drainage pipe networks. Current devices typically use cleaning rollers for cleaning. During cleaning, the detached impurities adhere to the gaps between the bristles, causing secondary contamination of the pipe's inner wall, creating a vicious cycle of cleaning, impurity accumulation, and re-contamination. This example uses a baffle plate to retain a certain height of water within the pipe, providing a real-time cleaning medium for the roller brush. After the roller brush rotates and wipes the inner wall, it naturally immerses itself in the retained water. The water flow, through the penetration and scouring action between the bristles, removes the attached impurities (such as silt and fibers) from the bristles. The impurities move with the water flow towards the drain end (and are eventually discharged through the gaps in the baffle plate). This continuous process of "wiping-immersion-impurity removal" keeps the roller brush clean at all times, avoiding the reduced cleaning effect caused by impurity accumulation in traditional brushes.

[0020] like Figure 1-4 As shown, a drainage pipe network inspection and maintenance device includes a blocking device, a moving device, a suction and flushing device, and a roller brush device; it is mainly used for cleaning drainage pipes. Through the coordinated work of the moving device, the roller brush device, and the suction and flushing device, it can achieve adaptive cleaning and maintenance of drainage pipes of different diameters.

[0021] In this embodiment, the moving device, the suction and flushing device, and the roller brush device can be fixed on the connecting frame and are suitable for linear pipelines. For structures that need to turn, the fixed seat of the first moving component can be connected to the connecting shaft through a universal joint, the connecting shaft can be connected to the first connecting plate through a universal joint, and the second connecting plate can be connected to the fixed seat of the second moving component through a universal joint, so as to realize the turning adaptation of the structure.

[0022] The blocking device includes a first baffle 7 and a second baffle 8, which are spaced apart inside the drainage pipe to form an inspection area. Water is continuously injected into the inspection area from the first baffle 7 to maintain water flow, while the second baffle appropriately intercepts the water. In implementation, a water injection structure can be arranged at the first baffle 7 and a recovery structure can be arranged at the second baffle 8. The two are circulated back and forth by a circulation pump. This scenario is suitable for situations where the water injection and drainage distances are relatively short. For situations where the distances are relatively far, water can be injected directly from the first baffle 7 and recovered at the second baffle 8 for other uses. The purpose of the above structure is to ensure that the pipeline inspection area maintains a certain depth of water source 9.

[0023] The moving device includes a first moving component 1 and a second moving component 2. The first moving component 1 and the second moving component 2 are connected together by a connecting frame 3 and are supported from both ends of the connecting frame 3 to move in the pipeline. In this embodiment, the first moving component 1 and the second moving component 2 each include a fixed seat, a telescopic cylinder, an adjusting sleeve, an adjusting rod, a swing rod, and moving wheels. The fixed seat is provided with a positioning rod. Specifically, there are two sets of fixed seats, namely the first fixed seat 101 and the second fixed seat 102. The two sets of fixed seats are connected by a positioning rod 103 to form a fixed foundation. The specific connection method can be to use a combination of fitting and bolt fixing. That is, one end of the positioning rod 103 is directly fixed to a fixed seat, and the other end of the positioning rod 103 is provided with a smaller thread head, so as to fix it to the fixed seat by bolts.

[0024] The adjusting sleeve is slidably mounted on the positioning rod 103. The telescopic cylinder 105 is disposed between the adjusting sleeve 104 and the fixed seat to change the position of the adjusting sleeve 104. The swing rod 106 is hinged to the fixed seat. The two ends of the adjusting rod 107 are hinged between the middle of the adjusting sleeve 104 and the swing rod 106. The moving wheel 108 is disposed at the end of the swing rod 106. By adjusting the extension length of the telescopic cylinder 105, the position of the adjusting sleeve 104 can be changed. In turn, through the linkage, the swing amplitude of the swing rod 106 can be adjusted to achieve the purpose of adapting to different pipe diameters.

[0025] In practical implementation, to drive the device forward, this embodiment uses electrically driven moving wheels. The moving wheels include driven wheels and electrically driven driving wheels. The swing arm 106 has three members, including side rods 1061 and a middle rod 1062. The side rods are located on the lower sides, and the middle rod is located at the upper center. The electrically driven driving wheel is located at the end of the middle rod, and the driven wheel is located at the end of the side rod. The electrically driven driving wheel serves as the power input to achieve forward movement of the device. In this embodiment, the electrically driven moving wheels are located at the top to reduce water erosion. In implementation, the side rods and middle rods of the first and second moving components are correspondingly arranged, specifically as follows: Figure 6 As shown, the movable wheel at the bottom of the side rod is above the water source.

[0026] The mobile device serves as the foundation for the entire equipment's movement and support, and is composed of a first mobile component 1 and a second mobile component 2 connected by a connecting frame 3. Both mobile components achieve pipe diameter adaptation through a linkage structure of "telescopic cylinder 105 - adjusting sleeve 104 - adjusting rod 107 - swing rod 106". When the telescopic cylinder 105 extends or retracts, it pushes the adjusting sleeve 104 to slide on the positioning rod 103, and the adjusting rod 107 subsequently drives the swing rod 106 to swing, thereby changing the contact position between the moving wheel and the inner wall of the pipe. The three swing rods 106 (side rods 1061 on both sides and the upper central rod 1062) correspond to the driven wheel (side rod 1061) and the electrically driven driving wheel (central rod 1062), respectively. The electrically driven driving wheel provides forward power and, because it is located at the top, reduces water erosion, ultimately enabling the device to move stably in pipes of different diameters. The roller brush device 4 includes a rotating sleeve 403, a gear set 402, a motor 401, a roller brush handle 404, and a roller brush 405. The rotating sleeve 403 is rotatably mounted on the connecting frame 3 and is located on one side of the first moving component 1. The motor 401 is fixed on the first moving component 1 and is connected to the rotating sleeve 403 through the gear set 402. The roller brush handle 404 is provided on the side of the rotating sleeve 403, and the roller brush 405 is fixed at the end of the roller brush handle 404. In implementation, the roller brush device 405 is connected to the first moving component 1, and the main body of its motor 401 is fixed on its fixed base, driving the rotating sleeve 403 to rotate on the connecting frame 3. In order to adapt to the corresponding pipe, the roller brush handle 404 in this embodiment is a telescopic structure. Specifically, it can adopt a combination of sleeve, rod, and set screw. The sleeve and rod combination structure is locked by side screw, or the sleeve and rod are adjusted by screw connection structure, so that the roller brush 405 fits against the inner wall of the drainage pipe.

[0027] The roller brush 405 device 4 is driven by a motor 401 to drive a gear set 402, which in turn drives a rotating sleeve 403 to rotate on the connecting frame 3. The roller brush 405 handle 404 on the side of the rotating sleeve 403 rotates synchronously with the rotating sleeve 403, so that the end roller brush 405 forms a rolling wiping motion on the inner wall of the pipe. The roller brush 405 handle 404 adopts a telescopic structure (sleeve + rod + locking element), and its length can be adjusted according to the inner diameter of the pipe to ensure that the roller brush 405 fits tightly with the inner wall, thus solving the problems of insufficient fit and weak cleaning intensity of traditional cleaning brush rollers. The suction flushing device includes a water tank 505, a pump 504, a suction pipe, a suction head 501, a flushing plate 506, and a flushing head 507. In this embodiment, the water tank 505 is fixed on the connecting frame 3, and its inlet is connected to the suction pipe via the pump 504. The suction head 501 is provided at the end of the suction pipe. The outlet of the water tank 505 is connected to the flushing head 507 via a pipe. The flushing plate 506 is fixed at the end of the second moving component 2, and the flushing head 507 is provided on the flushing plate 506 and faces the inner wall of the pipe.

[0028] The suction and rinsing device forms a closed-loop cleaning process of "suction-rinsing-circulation". The water tank 505 is fixed to the bracket of the connecting frame 3. The pump 504 draws water from the pipe into the water tank 505 through the suction pipe and suction head 501. High-pressure water is then sprayed onto the inner wall of the pipe through the rinsing head 507 on the rinsing disc 506, pre-rinsing or rinsing away dirt. Simultaneously, the water flow in the pipe cleans the roller brush 405 in real time, preventing residual dirt from affecting the cleaning effect.

[0029] This embodiment employs a dual-drive or single-drive method with two moving devices, one at the front and one at the rear, to achieve the forward movement of the device. In the single-drive mode, the rear-drive mode takes priority in driving the movement, allowing the device to move forward along the pipeline. Furthermore, to facilitate the assembly of the roller brush 405 device 4 and the suction flushing device, this embodiment describes the implementation structure of the connecting frame 3.

[0030] Specifically, the connecting frame 3 includes a connecting shaft 301, a first connecting plate 302, a second connecting plate 303, and a connecting rod 304. The connecting shaft 301 is fixed to the fixed seat (the fixed seat of the first moving component 1) via a flange. The first connecting plate 302 is fixed to the end of the connecting shaft 301. The second connecting plate 303 is fixed to the fixed seat of the second moving component 2. The connecting rod 304 is fixed between the first connecting plate 302 and the second connecting plate 303. The rotating sleeve 403 is rotatably mounted on the connecting shaft 301. The water tank 505 is located between the first connecting plate 302 and the second connecting plate 303.

[0031] In this embodiment, the first connecting plate 302 is connected to the second connecting plate 303 via the connecting rod 304, and the connecting shaft 301 is fixed at the end of the first connecting plate 302. The first moving component 1 and the second moving component 2 are respectively fixed on the connecting shaft 301 and the second connecting plate 303. At the same time, a support is provided on the connecting rod 304, and the water tank 505 is fixed on the support. The support structure is provided with a flexible protective pad to protect the structure of the water tank 505.

[0032] The connecting frame 3 integrates the moving device, the roller brush 405 device 4, and the suction and rinsing device into one unit through the connecting shaft 301, the connecting plate, and the connecting rod 304. The roller brush 405 device 4 on the side of the first moving component 1 first mechanically wipes the inner wall of the pipe, and the suction and rinsing device on the side of the second moving component 2 then completes the rinsing and dirt suction. The moving device provides stable walking power throughout the process, realizing the dual cleaning of "mechanical wiping + high-pressure rinsing" and improving the maintenance effect.

[0033] In practical use, the following steps are included: S1. Preliminary Preparations: According to the inner diameter of the drainage pipe to be maintained, adjust the extension length of the telescopic cylinder 105 of the moving device: by changing the position of the adjusting sleeve 104 on the positioning rod 103, the swing rod 106 is driven to swing, so that the moving wheel is in contact with the inner wall of the pipe (the electric drive drive wheel is at the top and the driven wheels are at the bottom on both sides to ensure stable support). S2. Adjust the length of the roller brush 405 handle 404 of the roller brush 405 device 4: through the telescopic cooperation of the sleeve and the sleeve rod and the locking part, the roller brush 405 is made to be in close contact with the inner wall of the pipe. A water-blocking plate is installed at the drainage end of the pipeline to be maintained. Water is continuously injected into one side of the pipeline (non-drainage end) to create a stable water level inside the pipeline (the suction head 501 must be submerged to ensure the suction device can draw water normally). The water source retained by the water-blocking plate is not only the self-cleaning medium of the roller brush 405, but also the core resource of the suction and flushing system. The device's suction pipe can directly draw water from the retained water source, pressurize it in the water tank 505, and then spray it onto the inner wall through the flushing head 507, forming a closed loop of "retained water source → suction → high-pressure flushing → impurities discharged with water flow". Compared with traditional devices that require an external water source (which is easily limited by pipeline length), this design utilizes the water source retained within the pipeline to complete the operation. Especially in long-distance pipeline maintenance, it can avoid cleaning interruptions caused by insufficient water supply, while reducing external water consumption.

[0034] S3. Unit startup and cleaning operations: Start the electric drive drive wheel of the mobile device, and the device moves forward along the pipeline (rear drive is preferred to improve walking stability). S4. Simultaneously start the motor 401 of the roller brush 405 device 4: The motor 401 drives the rotating sleeve 403 to rotate through the gear set 402. The roller brush 405 rotates around the connecting frame 3 with the roller brush 405 handle 404, and rolls and wipes the inner wall of the pipe to remove the attached dirt and debris. When the roller brush 405 passes through the water source in the pipe, it can clean it, leaving the debris in the water source and discharging it out with the water. S5. Start the pump 504 of the suction flushing device: The pump 504 draws water from the pipe (the water accumulation area formed by the water baffle) to the water tank 505 through the suction head 501. The water in the water tank 505 is transported through the pipe to the flushing head 507 on the flushing plate 506. The high-pressure water jet is sprayed onto the inner wall of the pipe to perform a secondary flushing on the inner wall after the roller brush 405 has wiped it, and to disperse the residual stains. S6. Circular Cleaning and Continuous Progress: The water inside the pipe flows continuously during the rinsing process, providing a water source for the suction device and rinsing the surface of the roller brush 405 in real time to prevent dirt from accumulating on the roller brush 405 and ensure the continuous cleaning ability of the roller brush 405. During the movement of the device, the moving wheels always keep in contact with the inner wall of the pipe through the adaptive adjustment of the swing arm 106 to ensure smooth movement; the roller brush 405 and the flushing head 507 move with the device to clean the entire inner wall of the pipe, and the dirt moves with the water flow to the drain end and is finally discharged from the drainage gap reserved by the water baffle plate. S7. Homework completed: After the entire pipeline has been cleaned, turn off motor 401, pump 504 and electric drive wheel, stop water injection and remove the baffle plate to allow the residual water in the pipeline to drain out. Adjust the telescopic cylinder 105 in the opposite direction to retract the moving wheels, remove the device from the pipeline, and complete the maintenance work. Example 2 further explains the driving power of the device. Based on the moving wheel drive in Example 1, this example adds or replaces the original drive device, using an electric drive blade drive method. By utilizing the water source in the pipeline to provide auxiliary power, the stability of the device's movement and power output in the pipeline are further improved. Its core design logic is to use the existing water environment in the pipeline (a stable water level needs to be formed during maintenance) to supplement the power of the electric drive blade.

[0035] The stable water level created by the baffle plate (which needs to submerge the bottom of the suction head 501 and the roller brush 405) provides a foundation for the coordinated operation of all structures: For the mobile drive system, the water level lubricates the inner wall of the pipe, reducing the frictional resistance between the moving wheels and the inner wall, and, in conjunction with the water flow thrust of the electric drive blades, prevents the device from jamming due to the accumulation of impurities; For the cleaning system, the stable water level ensures that the roller brush 405 can be immersed to the same depth with each rotation, resulting in a uniform and stable self-cleaning effect, while also preventing the suction head 501 from interrupting its suction due to water level fluctuations. This targeted adaptation to the condition of accumulated impurities allows the device to maintain efficient operation even in areas with dense impurities (such as pipe bends and slope changes).

[0036] In this embodiment, a drive base is provided on the fixed base, and an electric drive blade is provided at the bottom of the drive base. Specifically, the electric drive blade can be configured in a rear-drive or front-rear dual-drive manner. Using the water source in the drainage pipe, the electric drive blade is submerged below the water surface. After starting the motor 401, the electric drive blade generates forward thrust to achieve the forward transport purpose of the device.

[0037] The electric drive blades need to be fixed to the connecting frame 3 or the moving assembly of the device, ensuring that the blades are completely submerged below the water surface in the pipe (consistent with the water level requirement of the suction head 501). They can typically be installed near the flushing disc 506 of the first moving assembly 1 (rear drive position), or on both sides of the first and second moving assemblies 2 (front and rear dual drive position), avoiding interference with the working range of the roller brush 405 and the suction flushing device. The electric drive blades consist of a waterproof motor 401, the blade body, and a fixed bracket. The waterproof motor 401 must have IP68 waterproof rating to prevent corrosion from sewage inside the pipe; the blade body adopts a propeller-type structure, generating thrust by rotating and cutting the water flow; the fixed bracket is rigidly connected to the connecting frame 3 or the fixed seat of the moving assembly to ensure that the blades do not wobble during operation.

[0038] This embodiment uses a combination of electric drive blades and existing moving wheels for propulsion, making it suitable for low-water-level pipelines. It can also move forward efficiently in high-water-level and slippery pipelines using water flow dynamics, further expanding the scope of application for drainage network inspection and maintenance. Example 3 further illustrates the fixed position.

[0039] Furthermore, the suction pipe includes an upper sleeve 502 and a lower sleeve 503. The upper sleeve 502 is threaded into the lower sleeve 503 to adjust the height of the suction head 501. The suction head 501 includes an inner mesh cover and an outer mesh cover. An outer mesh cover is provided on the outside of the inner mesh cover and is fixed to the bottom of the upper sleeve 502 via a connector. The inner and outer mesh covers of the suction head 501 form a double-layer protective filtration system. The outer mesh cover adopts a large-aperture grid structure (aperture 5-10mm) to mainly intercept large debris (such as gravel and plastic bottles) in the pipe, preventing them from entering the suction pipe and causing blockage. The inner mesh cover adopts a fine filter screen (aperture 1-2mm) to further filter fine particles in the water, protecting the impeller of the subsequent pump 504 from wear. The outer mesh cover is fixed to the bottom of the upper sleeve 502 via a connector. The connector adopts a snap-fit ​​or threaded connection method for easy disassembly and cleaning. When the outer mesh cover is covered with a lot of debris, it can be quickly removed and rinsed. The inner mesh cover is integrally formed or welded to the upper sleeve 502 to ensure filtration stability. The combination of the double-layer structure can guarantee suction efficiency and reduce the risk of equipment failure. A camera 10 is installed in the center of the flushing tray 506, and a transparent cover 11 is installed on the outside of the camera 10. The camera 10 in the center of the flushing tray 506 is the "visual perception core" of the device, used to capture real-time images of the cleanliness and structural defects (such as cracks and leaks) of the inner wall of the pipe, and transmit the images to an external control console for visual inspection. The transparent cover 11 on the outside of the camera 10 is made of high-transmittance acrylic or tempered glass, and is waterproof and scratch-resistant. On the one hand, it isolates sewage and debris in the pipe, preventing contamination or damage to the lens of the camera 10; on the other hand, the surface of the transparent cover 11 is treated with anti-fog, which reduces the impact of water vapor condensation on the image clarity even in pipe environments with large temperature differences. The transparent cover 11 is fixed to the flushing tray 506 by a sealing ring to ensure sealing performance, and can be quickly disassembled by a snap-fit ​​structure for easy periodic wiping of the lens and the inner wall of the transparent cover 11.

[0040] The suction tube employs a threaded connection structure between the upper sleeve 502 and the lower sleeve 503, forming a telescopic assembly with precisely adjustable length. The lower sleeve 503 is fixed to the water inlet pipe of the water tank 505. The upper sleeve 502 engages with the thread on the inner wall of the lower sleeve 503 via its outer surface thread. When the upper sleeve 502 is rotated, its extension length within the lower sleeve 503 changes linearly, thereby adjusting the height of the suction head 501 at the bottom. The core advantage of this design lies in its adaptability to different water levels: when the water level in the pipe is shallow, rotating the upper sleeve 502 increases the extension length, causing the suction head 501 to sink below the water surface; when the water level is deep, shortening the extension length of the upper sleeve 502 prevents the suction head 501 from sinking excessively and sucking in bottom sludge. The self-locking characteristic of the threaded connection ensures stable positioning after adjustment, eliminating the need for additional locking components and facilitating operation.

[0041] The outlet end of the flushing head 507 is equipped with a front spray head 5071 and a side spray head 5072; the side spray head 5072 is angled towards the front end of the flushing disc 506, and the front spray head 5071 is perpendicular to the inner wall of the pipe. The front spray head 5071 and the side spray head 5072 of the flushing head 507 form a "three-dimensional flushing system" to specifically improve the cleaning coverage. The front spray head 5071 is perpendicular to the inner wall of the pipe, and the high-pressure water jet can directly impact stubborn stains (such as hardened silt and moss) on the inner wall surface, forming a concentrated impact force; the side spray head 5072 is angled towards the front end of the flushing disc 506 (at an angle of 30°-45° with the pipe axis), and the water jet can cover the inner wall area in front of the flushing disc 506, performing a secondary flushing of the residual stains after cleaning by the roller brush 405, while simultaneously pre-wetting the uncleaned pipe section, creating favorable conditions for the subsequent operation of the roller brush 405. The combination of dual nozzles expands the rinsing range from "localized spot impact" to continuous area coverage of "pre-rinse in front + strong cleaning in the current area", avoiding cleaning dead spots.

[0042] The rinsing tray 506 is provided with a slot corresponding to the moving device. According to the position of the slot, the rinsing tray 506 is divided into a rinsing area and a non-rinsing area. The rinsing head 507 is located in the rinsing area and faces outward.

[0043] The slot design on the rinsing tray 506 is key to achieving precise adaptation with the mobile device. The shape and position of the slot correspond to the end profile of the swing arm 106 in the second moving component 2. During installation, the end of the swing arm 106 is embedded in the slot, forming a rigid connection between the rinsing tray 506 and the mobile device, preventing displacement of the rinsing tray 506 due to water flow impact or pipe vibration when the device moves. Based on the rinsing and non-rinsing areas divided by the slot positions, the directional layout of the rinsing heads 507 can be achieved: the rinsing area is concentrated in the outer circumferential region of the rinsing tray 506, with the rinsing heads 507 arranged radially outward to ensure that the water flow directly acts on the inner wall of the pipe; the non-rinsing areas (such as the location of the slots and the installation area of ​​the camera 10) do not have rinsing heads 507, avoiding direct water flow onto the mobile component or the transparent cover 11 of the camera 10, reducing interference with equipment operation and shooting field of view. This partitioned design ensures rinsing efficiency while also taking into account the structural synergy of the device. In this embodiment, the flushing head 507 is used to flush non-water source areas. For water source areas, the cleaning of water source areas is achieved by a combination of water flow and roller brush agitation. For flushing areas, the cleaning is achieved by a combination of high-pressure flushing and roller brush agitation. During operation, the roller brush agitation can be performed first, followed by high-pressure nozzle flushing, or high-pressure flushing can be performed first, followed by roller brush agitation, and finally high-pressure flushing. In this device, a flushing plate and nozzle need to be added behind the first moving component to achieve the purpose of front and rear flushing.

[0044] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. The basic concept of the present invention is to use a flowing water source as the water source for the high-pressure nozzle, and simultaneously use the water source to clean the roller brush and the bottom of the drain pipe. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A drainage pipe network inspection and maintenance device, characterized in that: It includes a blocking device, a moving device, a suction and flushing device, and a roller brush device; the blocking device includes a first baffle and a second baffle, which are spaced apart in the drain pipe and form an inspection area; The moving device includes a first moving component and a second moving component; the first moving component and the second moving component are connected together by a connecting frame, and are supported from both ends of the connecting frame to move in the pipe; The roller brush device includes a rotating sleeve, a gear set, a motor, a roller brush handle, and a roller brush. The rotating sleeve is rotatably mounted on a connecting frame and is located on one side of the first moving component. The motor is fixed on the first moving component and is connected to the rotating sleeve through the gear set. A roller brush handle is provided on the side of the rotating sleeve, and a roller brush is fixed at the end of the roller brush handle. The suction and rinsing device includes a water tank, a pump, a suction pipe, a suction head, a rinsing disc, and a rinsing head. The water tank is fixed on a connecting frame, and its inlet is connected to the suction pipe via the pump. The suction head is provided at the end of the suction pipe. The outlet of the water tank is connected to the rinsing head via a pipe. The rinsing disc is fixed at the end of the second movable component, and the rinsing head is placed on the rinsing disc and faces the inner wall of the pipe.

2. The drainage pipe network inspection and maintenance device according to claim 1, characterized in that: Both the first and second moving components include a fixed base, a telescopic cylinder, an adjusting sleeve, an adjusting rod, a swing arm, and a moving wheel; the fixed base is provided with a positioning rod, the adjusting sleeve is slidably fitted on the positioning rod, the telescopic cylinder is disposed between the adjusting sleeve and the fixed base to change the position of the adjusting sleeve, the swing arm is hinged to the fixed base, the two ends of the adjusting rod are hinged between the adjusting sleeve and the middle of the swing arm, and the moving wheel is disposed at the end of the swing arm.

3. The drainage pipe network inspection and maintenance device according to claim 2, characterized in that: The moving wheel includes a driven wheel and an electrically driven driving wheel. The rocker arm has three rods, including a side rod and a middle rod. The side rods are located on both sides of the lower part, and the middle rod is located at the center of the upper part. The electrically driven driving wheel is located at the end of the middle rod, and the driven wheel is located at the end of the side rod.

4. The drainage pipe network inspection and maintenance device according to claim 2, characterized in that: The fixed base is provided with a drive base, and the bottom of the drive base is provided with electric drive blades.

5. The drainage pipe network inspection and maintenance device according to claim 2, characterized in that: The connecting frame includes a connecting shaft, a first connecting plate, a second connecting plate, and a connecting rod. The connecting shaft is fixed to a fixed seat via a flange. The first connecting plate is fixed to the end of the connecting shaft. The second connecting plate is fixed to a fixed seat of the second moving component. The connecting rod is fixed between the first and second connecting plates. The rotating sleeve is rotatably mounted on the connecting shaft. The water tank is positioned between the first and second connecting plates.

6. The drainage pipe network inspection and maintenance device according to claim 5, characterized in that: The connecting rod is provided with a support, and the water tank is fixed on the support.

7. The drainage pipe network inspection and maintenance device according to claim 1, characterized in that: The suction tube includes an upper sleeve and a lower sleeve. The upper sleeve is threaded into the lower sleeve to adjust the height of the suction head. The suction head includes an inner mesh cover and an outer mesh cover. An outer mesh cover is provided on the outside of the inner mesh cover. The outer mesh cover is fixed to the bottom of the upper sleeve via a connector.

8. The drainage pipe network inspection and maintenance device according to claim 1, characterized in that: A camera is installed in the middle of the rinsing tray, and a transparent cover is installed on the outside of the camera.

9. The drainage pipe network inspection and maintenance device according to claim 1, characterized in that: The outlet end of the flushing head is equipped with a front nozzle and a side nozzle; the side nozzle is angled toward the front end of the flushing disc, and the front nozzle is perpendicular to the inner wall of the pipe.

10. The drainage pipe network inspection and maintenance device according to claim 1, characterized in that: The rinsing tray is provided with a slot corresponding to the moving device. According to the position of the slot, the rinsing tray is divided into a rinsing area and a non-rinsing area. The rinsing head is set in the rinsing area and faces outward.

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