Underdrain structure and method for dredging and discharging sludge

By laying a rollable sand-collecting component at the bottom of the underground ditch and utilizing a roller and drive mechanism, the problem of dredging difficulties caused by the narrow structure of the underground ditch was solved, realizing automated and controllable dredging and mud discharge, improving dredging efficiency and reducing costs.

CN122358764APending Publication Date: 2026-07-10CHINA CONSTR EIGHTH ENG BUREAU TECH CONSTR CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA CONSTR EIGHTH ENG BUREAU TECH CONSTR CO LTD
Filing Date
2026-05-14
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The existing underground drainage system is difficult to clean due to its limited space and the inconvenience of decorative panels, which increases the cost of manpower and materials.

Method used

A rollable sand-receiving component is laid at the bottom of the underground ditch. Using a roller and drive mechanism inside the sedimentation tank, the sand-receiving component is moved by the drive mechanism, and the sediment is automatically transferred to the sedimentation tank for removal.

Benefits of technology

It enables convenient dredging operations without the need to disassemble decorative panels, improves dredging efficiency, ensures long-term unobstructed drainage, reduces the frequency of manual intervention, and lowers costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of concealed gutter structure and its dredging and sludge discharging method for facilitating dredging, comprising: the opposite ends of the concealed gutter body are connected with sand trap respectively, the inside of the concealed gutter body is formed with flow channel, the flow channel is communicated with the sand trap, the sand trap is rotatably installed with reel;For receiving the sediment in the flow channel of the clean-up and discharging water and being curled sand receiving member, it is movably full-paved in the bottom of the flow channel, the opposite ends of the sand receiving member are respectively extended to two sand traps and are wound on the reel;For driving a reel to make the sand receiving member move towards a sand trap and be wound on the reel, drive mechanism is installed in the sand trap.The application solves the problem that the concealed gutter structure is narrow, it is inconvenient to disassemble and assemble decorative plate, which leads to the difficulty of concealed gutter dredging.
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Description

Technical Field

[0001] This invention relates to the field of underground ditch dredging technology, specifically to an underground ditch structure that facilitates dredging and its dredging and sludge removal method. Background Technology

[0002] After the completion of large-scale projects such as underground stations and building construction, and with the completion of structural and decorative finishing, the underground drainage systems may become clogged due to long-term sludge accumulation. Because of the limited space in these underground drainage systems, the inconvenience of removing and installing decorative panels, and the inability to directly access the drainage areas, sludge removal becomes difficult or impossible, leading to uncontrollable sludge removal and increased costs in terms of manpower and resources. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a culvert structure that facilitates dredging and a dredging and sludge removal method are provided to solve the problem of culvert dredging being difficult due to its limited space and inconvenient installation and removal of decorative panels.

[0004] To achieve the above objectives, a culvert structure that facilitates dredging is provided, comprising: The culvert body has sedimentation tanks connected to its opposite ends. A flow channel is formed inside the culvert body and is connected to the sedimentation tank. A roller is rotatably installed inside the sedimentation tank. A flexible sand-receiving component for receiving sediment in the clear water in the channel is movably laid on the bottom of the channel, with the opposite ends of the sand-receiving component extending into the two sedimentation tanks and wound around the roller. A drive mechanism for driving a reel to move the sand receiving component toward a sedimentation tank and winding it around the reel is installed inside the sedimentation tank.

[0005] Furthermore, the lower part of the opposite side walls of the flow channel is formed with limiting grooves, and the opposite sides of the sand receiving component are slidably disposed in the limiting grooves.

[0006] Furthermore, the sand receiving component has multiple anti-running protrusions, which are spaced apart along the length of the sand receiving component and along the width of the sand receiving component.

[0007] Furthermore, the multiple anti-running protrusions are evenly spaced along the length direction of the sand receiving component.

[0008] Furthermore, the sand-receiving component is a chain plate.

[0009] Furthermore, the sand receiving component is a conveyor belt.

[0010] Furthermore, the drive mechanism includes: The motor is fixedly installed inside the sedimentation tank; The drive gear is coaxially connected to the output shaft of the motor; The driven gear is coaxially connected to the spool and meshes with the driving gear.

[0011] This invention provides a dredging and sludge removal method using a concealed ditch structure that facilitates dredging, comprising the following steps: The sand-collecting component is movably and fully laid at the bottom of the flow channel of the culvert body; The two opposite ends of the sand receiving component are respectively extended into the sedimentation tanks at both ends of the two underground ditch bodies and wound around the sedimentation tanks. After the clean water flows through the flow channel of the underground ditch body, the sediment in the clean water accumulates on the sand receiving component. A drive mechanism in a sedimentation tank drives a reel to move the receiving sand component toward the sedimentation tank and wind it around the reel. During the movement of the receiving sand component toward the sedimentation tank, sediment on the receiving sand component entering the sedimentation tank is removed. After a period of time, the sediment in the clear water will once again accumulate on the sand receiving component; A drive mechanism in another sedimentation tank drives another reel to move the receiving sand piece toward the other sedimentation tank and wind it onto the other reel. During the movement of the receiving sand piece toward the other sedimentation tank, sediment on the receiving sand piece that enters the other sedimentation tank is removed.

[0012] The beneficial effects of this invention are that the ditch structure, which facilitates dredging, eliminates the need to disassemble decorative panels, making dredging operations convenient. This ditch structure utilizes a fully rolled sand-receiving component at the bottom of the ditch's flow channel, and employs rollers and a drive mechanism within the sedimentation tanks at both ends to move the sand-receiving component. This automatically transfers sediment into the sedimentation tanks for removal, avoiding the difficulties of manual dredging caused by the limited space of the ditch and the difficulty in removing decorative panels, thus significantly improving dredging efficiency.

[0013] The ditch structure of this invention facilitates bidirectional alternating dredging and has strong continuous operation capability. Through the cooperation of the rollers and drive mechanisms in the two sedimentation tanks, the sand receiving parts can move alternately to both ends. After dredging on one side is completed, the other side can continue to be rolled up, realizing periodic and uninterrupted sediment removal, ensuring the long-term unobstructed flow of the ditch and reducing the frequency of manual intervention. Attached Figure Description

[0014] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of a culvert structure that facilitates dredging, according to an embodiment of the present invention.

[0015] Figure 2 This is a front view of a concealed ditch structure that facilitates dredging, according to an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of a sand-receiving component for easy dredging according to an embodiment of the present invention.

[0017] Figure 4 This is a cross-sectional view of the underground ditch body, which is designed for easy dredging according to an embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the sedimentation tank according to an embodiment of the present invention.

[0019] Figure label: The underground ditch body 1, the flow channel 10, the sedimentation tank 11, and the scroll 12; Sand-receiving component 2, anti-running protrusion 21; Drive mechanism 3, motor 31, driving gear 32, driven gear 33. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Reference Figures 1 to 5 As shown, the present invention provides a culvert structure that facilitates dredging, comprising: a culvert body 1, a sand receiving component 2, and a driving mechanism 3.

[0023] The two opposite ends of the underground ditch body 1 are respectively connected to sedimentation tanks 11. A flow channel 10 is formed inside the underground ditch body 1. The flow channel 10 is connected to the sedimentation tank 11. A roller 12 is rotatably installed inside the sedimentation tank 11.

[0024] In this embodiment, the culvert body includes a channel and a grating plate. The grating plate is laid at the opening of the channel. Since the exterior of the culvert body is also equipped with a decorative panel, the grating plate is inconvenient to remove. External clean water flows into the channel of the culvert body through the grating plate. A sedimentation tank is connected to the municipal stormwater pipe. Clean water flows into the sedimentation tank through the channel, and then flows from the sedimentation tank into the municipal stormwater pipe.

[0025] Furthermore, the sand-receiving component 2 is flexible. The sand-receiving component 2 can be movably laid across the bottom of the flow channel 10. The opposite ends of the sand-receiving component 2 extend into the two sedimentation tanks 11. The two ends of the sand-receiving component 2 are respectively wound around the rollers 12 of the two sedimentation tanks. The sand-receiving component 2 is used to collect sediment from the clear water flow within the flow channel 10. Because the sand-receiving component is laid within the flow channel, when the clear water flows within the flow channel, the sediment in the clear water settles onto the sand-receiving component.

[0026] The drive mechanism 3 is installed inside the sedimentation tank 11. The drive mechanism 3 is used to drive a roller 12 so that the sand receiving part 2 moves toward a sedimentation tank 11 and is wound around a roller 12.

[0027] When sediment accumulates on the receiving part, the drive mechanism 3 is activated, causing one end of the receiving part to move towards the sedimentation tank. Once one end of the receiving part has moved into the sedimentation tank, construction personnel or a cleaning mechanism remove the sediment from the receiving part into the sedimentation tank.

[0028] In some embodiments, the cleaning mechanism includes a screw, a guide rod, a scraper, and a motor. The screw is rotatably mounted within the sedimentation tank. The screw is positioned above one end of the sand-receiving component. The guide rod is fixed within the sedimentation tank. The guide rod is aligned with the screw. The screw is positioned along the width direction of the sand-receiving component (i.e., the width direction of the culvert body).

[0029] The scraper is vertically positioned. A threaded hole and a guide hole are located at the top of the scraper. A screw is threaded into the threaded hole. A guide rod slides in the guide hole. The motor's output shaft is coaxially connected to the screw. When the motor rotates forward, the scraper moves along the length of the guide rod. When the scraper moves above the sand-receiving component, its lower part abuts against the upper surface of the component. As the scraper continues to move, it scrapes away the sediment on the sand-receiving component, causing it to fall into the sedimentation tank.

[0030] Correspondingly, when the motor reverses, the scraper moves in the opposite direction. During actual sediment removal, the drive mechanism moves the receiving component a certain distance, and the scraper removes a section of sediment from the receiving component. Then, the drive mechanism moves the receiving component a certain distance again, and the scraper removes another section of sediment. This process repeats until all the sediment on the receiving component is removed.

[0031] Combination Figure 1 , Figure 4 As shown, limiting grooves are formed at the lower part of the opposite side walls of the flow channel 10. The opposite sides of the receiving component 2 are slidably disposed in the limiting grooves.

[0032] In this embodiment, the sand receiving component 2 is a chain plate or conveyor belt. The chain plate or conveyor belt can be made of corrosion-resistant and water-resistant plastic.

[0033] In a preferred embodiment, the sand receiving component is strip-shaped. To prevent the sediment on the sand receiving component from sliding during movement, multiple anti-slip ridges 21 are formed on the sand receiving component 2. These anti-slip ridges 21 are spaced apart along the length of the sand receiving component 2. The anti-slip ridges 21 are also arranged along the width of the sand receiving component 2.

[0034] In this embodiment, multiple anti-running protrusions 21 are evenly spaced along the length of the sand receiving component 2.

[0035] Combination Figure 2 and Figure 3 As shown, the drive mechanism 3 includes: a motor 31, a drive gear 32, and a driven gear 33.

[0036] The motor 31 is fixed inside the sedimentation tank 11. The driving gear 32 is coaxially connected to the output shaft of the motor 31. The driven gear 33 is coaxially connected to the reel 12 and meshes with the driving gear 32.

[0037] When the motor of the drive mechanism starts, the rotation of the reel is driven by the cooperation of the driving gear and the driven dimension, so that the sand receiving part is wound on the reel.

[0038] This invention provides a dredging and sludge removal method using a concealed ditch structure that facilitates dredging, comprising the following steps: S1. The sand receiving component 2 is movably and fully laid at the bottom of the flow channel 10 of the culvert body 1; S2. Extend the opposite ends of the sand receiving component 2 into the sedimentation tanks 11 at both ends of the two underground ditch bodies 1 and wind the roller 12 inside the sedimentation tanks 11. S3. After the clear water flows through the flow channel 10 of the culvert body 1, the sediment in the clear water accumulates on the sand receiving part 2. S4. The drive mechanism 3 in the sedimentation tank 11 drives a roller 12 to move the sand receiving part 2 toward the sedimentation tank 11 and wind it around the roller 12. During the process of the sand receiving part 2 moving toward the sedimentation tank 11, the sediment on the sand receiving part 2 entering the sedimentation tank 11 is removed. S5. After a period of time, the sediment in the clean water will once again accumulate on the sand receiving part 2. S6. The drive mechanism 3 in another sedimentation tank 11 drives another roller 12 to move the sand receiving part 2 toward the other sedimentation tank 11 and wind it around the other roller 12. During the process of the sand receiving part 2 moving toward the other sedimentation tank 11, the sediment on the sand receiving part 2 entering the other sedimentation tank 11 is removed.

[0039] In this embodiment, the opening of the sedimentation tank is open, making it easy for construction personnel to observe or remove sediment from the sand receiving components.

[0040] The ditch structure of the present invention facilitates dredging by using a roller to roll up or unroll sand-collecting components, which allows the sediment accumulated on the sand-collecting components inside the ditch to be moved to a sedimentation tank for unified treatment, greatly reducing the manpower and material resources required for dredging.

[0041] The ditch structure of this invention, which facilitates dredging, eliminates the need to disassemble decorative panels, making dredging operations convenient. This ditch structure utilizes a fully rolled sand-receiving component at the bottom of the ditch body's flow channel. A roller and drive mechanism within the sedimentation tanks at both ends move the sand-receiving component, automatically transferring sediment to the sedimentation tanks for removal. This avoids the difficulties of manual dredging caused by the confined space of the ditch and the difficulty in removing decorative panels, significantly improving dredging efficiency.

[0042] The ditch structure of this invention facilitates bidirectional alternating dredging and has strong continuous operation capability. Through the cooperation of the rollers and drive mechanisms in the two sedimentation tanks, the sand receiving parts can move alternately to both ends. After dredging on one side is completed, the other side can continue to be rolled up, realizing periodic and uninterrupted sediment removal, ensuring the long-term unobstructed flow of the ditch and reducing the frequency of manual intervention.

[0043] The concealed ditch structure of this invention, which facilitates dredging, effectively prevents sediment slippage and sand receiving component deviation. Anti-slip protrusions spaced along the length of the sand receiving component increase friction with the sediment, preventing it from sliding backward during movement. Simultaneously, limiting grooves on the lower part of both sides of the flow channel guide and limit the sand receiving component, ensuring its operational stability and improving dredging efficiency.

[0044] The ditch structure of this invention, which facilitates dredging, is simple in structure and easy to manufacture and maintain. The sand-receiving component of this ditch structure can be a chain plate or conveyor belt, and the drive mechanism uses a motor and gear transmission. The components are highly standardized, making installation convenient. Furthermore, the open opening of the sedimentation tank facilitates observation and cleaning, reducing equipment manufacturing and subsequent maintenance costs.

[0045] The ditch structure of this invention, which facilitates dredging, is adaptable to various ditch environments and has a wide range of applications. This invention is not only applicable to drainage ditches in underground stations and building projects, but can also be extended to other narrow, enclosed, or inconveniently accessible drainage channels, demonstrating good versatility and promotional value.

[0046] The ditch structure of this invention, which facilitates dredging, effectively solves the problems of difficult and costly dredging of existing ditches, realizes automated and controllable dredging and mud removal, and significantly saves human and material resources.

[0047] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A concealed ditch structure that facilitates dredging, characterized in that, include: The culvert body has sedimentation tanks connected to its opposite ends. A flow channel is formed inside the culvert body and is connected to the sedimentation tank. A roller is rotatably installed inside the sedimentation tank. A flexible sand-receiving component for receiving sediment in the clear water in the channel is movably laid on the bottom of the channel, with the opposite ends of the sand-receiving component extending into the two sedimentation tanks and wound around the roller. A drive mechanism for driving a reel to move the sand receiving component toward a sedimentation tank and winding it around the reel is installed inside the sedimentation tank.

2. The culvert structure for easy dredging according to claim 1, characterized in that, The lower part of the opposite side walls of the flow channel forms a limiting groove, and the opposite sides of the sand receiving component slide in the limiting groove.

3. The culvert structure for easy dredging according to claim 1, characterized in that, The sand receiving component has multiple anti-running protrusions, which are spaced apart along the length of the sand receiving component and along the width of the sand receiving component.

4. The culvert structure for easy dredging according to claim 3, characterized in that, Multiple anti-running ridges are evenly spaced along the length of the sand receiving component.

5. The culvert structure for easy dredging according to claim 1, characterized in that, The sand receiving component is a chain plate.

6. The culvert structure for easy dredging according to claim 1, characterized in that, The sand receiving component is a conveyor belt.

7. The culvert structure for easy dredging according to claim 1, characterized in that, The drive mechanism includes: The motor is fixedly installed inside the sedimentation tank; The drive gear is coaxially connected to the output shaft of the motor; The driven gear is coaxially connected to the spool and meshes with the driving gear.

8. A method for dredging and removing sludge using a concealed ditch structure as described in any one of claims 1 to 7, characterized in that, Includes the following steps: The sand-collecting component is movably and fully laid at the bottom of the flow channel of the culvert body; The two opposite ends of the sand receiving component are respectively extended into the sedimentation tanks at both ends of the two underground ditch bodies and wound around the sedimentation tanks. After the clean water flows through the flow channel of the underground ditch body, the sediment in the clean water accumulates on the sand receiving component. A drive mechanism in a sedimentation tank drives a reel to move the receiving sand component toward the sedimentation tank and wind it around the reel. During the movement of the receiving sand component toward the sedimentation tank, sediment on the receiving sand component entering the sedimentation tank is removed. After a period of time, the sediment in the clear water will once again accumulate on the sand receiving component; A drive mechanism in another sedimentation tank drives another reel to move the receiving sand piece toward the other sedimentation tank and wind it onto the other reel. During the movement of the receiving sand piece toward the other sedimentation tank, sediment on the receiving sand piece that enters the other sedimentation tank is removed.