Combined small and medium-sized river channel ecological dredging equipment and dredging method

Abstract

The invention relates to combined type medium and small river channel ecological dredging equipment and a dredging method. Relates to the technical field of river channel desilting, and comprises desilting equipment, a silt discharging and conveying assembly, a plurality of silt extracting structures and matched silt discharging equipment, a desilting ship body is a main body part of the equipment, and the silt extracting structures are arranged to extract silt in a river channel and temporarily store the silt in the ship body. In the dredging process, movement of the ship body is reduced, and the dredging efficiency is improved. The actual distribution of the extraction structures is changed according to different depths and widths of the two sides of the river channel and the thickness of the sludge, and it is ensured that the sludge in the whole river channel range can be evenly extracted. The multiple silt discharging and conveying assemblies are arranged along the vertical center line of the ship body, and silt in the ship body can be evenly guided to be matched with silt discharging equipment. And silt discharging equipment is arranged along the two sides of the river channel, so that the silt is finally discharged. The discharged sludge is directionally guided to a discharge position, so that the sludge can be quickly and effectively discharged, and the continuity of dredging operation is not influenced.

Description

Technical Field

[0001] This invention relates to the field of river dredging technology, specifically to a combined ecological dredging equipment and method for small and medium-sized rivers. Background Technology

[0002] River dredging is an important project for maintaining the aquatic ecological environment and ensuring flood control and drainage capacity. This is especially true for small and medium-sized rivers, which have slow water flow and weak self-purification capacity, leading to easy silt deposition and problems such as shrinking river cross-sections, water quality deterioration, and imbalance of aquatic ecosystems. Currently, dredging of small and medium-sized rivers mainly uses traditional dredgers, manual dredging, or simple suction equipment.

[0003] Traditional equipment typically operates in a single direction, making it difficult to simultaneously cover both sides and the bottom of the river channel. Its capacity to handle solidified silt is insufficient, requiring multiple round trips and resulting in long dredging cycles. Small and medium-sized rivers exhibit significant differences in width and depth, and contain complex terrain such as bends and narrow sections. Fixed-structure dredging equipment struggles to flexibly adjust its operating range, easily creating blind spots. Existing equipment largely relies on onboard storage tanks; once full, operations must be halted and the vessel returned to shore for discharge, interrupting the dredging process and significantly reducing operational efficiency.

[0004] Given the unique characteristics of small and medium-sized rivers, there is an urgent need for an ecological dredging equipment and method that is efficient, adaptable, and continuous, in order to solve the problems of low efficiency, complex operation, and weak adaptability in existing technologies. Summary of the Invention

[0005] Purpose of the invention: To provide a combined ecological dredging equipment and method for small and medium-sized rivers, solving the problems of low efficiency, complex operation, and weak adaptability in the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: Firstly, a combined ecological dredging device for small and medium-sized rivers is proposed, comprising: a dredging device and multiple cooperating dredging devices; the multiple cooperating dredging devices are distributed sequentially along both sides of the river for receiving and discharging silt; the dredging device is configured as a dredging vessel hull, the dredging vessel hull comprising: at least three silt extraction structures arranged circumferentially along the dredging vessel hull for temporarily pumping silt from the river into the dredging vessel hull for guiding the silt temporarily stored in the dredging vessel hull to the dredging conveying components of the cooperating dredging devices; at least two dredging conveying components are symmetrically arranged along the vertical centerline of the dredging vessel hull; when the dredging conveying components move to the discharge position corresponding to the cooperating dredging devices, they guide the silt to the cooperating dredging devices, so as to achieve the final discharge of silt through the cooperating dredging devices.

[0007] According to one aspect of the embodiments of this application, the dredging vessel hull further includes: at least two dredging components; the dredging components are disposed at the front end of the dredging vessel hull and are used to disperse the silt on both sides and the bottom of the river channel; the working angle of the dredging components is adjustable to adapt to the silt dispersion operation requirements at different locations on both sides and the bottom of the river channel.

[0008] By using at least two dredging components and placing them at the bow of the vessel, the equipment can simultaneously treat different areas of the river, reducing the workload of multiple round trips and improving dredging speed and efficiency.

[0009] According to one aspect of the embodiments of this application, the dredging assembly includes: an adjustment frame fixed to the dredging vessel hull and providing an overall installation and connection area for the dredging assembly; a drive member located inside the adjustment frame and rotatably connected to the adjustment frame for adjusting the working angle; and a sludge dispersing member connected to the power output end of the drive member for performing a sludge dispersing action. The adjustment frame drives the drive member and the sludge dispersing member to perform angle adjustment in one direction, which can disperse the sludge on the side and below.

[0010] According to one aspect of the embodiments of this application, the dredging vessel has a bow at its front end, the bow angle of which gradually narrows; a sludge storage chamber is provided at the center of the dredging vessel; and a control discharge chamber is provided at the rear end of the dredging vessel, the control discharge chamber providing an area for installing a controller and a sludge pump.

[0011] According to one aspect of the embodiments of this application, the sludge discharge and conveying assembly includes: an extended discharge pipe located outside the dredging vessel hull and having an extended length according to the width of the river channel; a guide pipe connected to one end of the extended discharge pipe near the dredging vessel hull and having an inclination angle adapted to the inclination angle of the inner wall of the dredging vessel hull; and a suction pump fixed to the other end of the guide pipe for providing the suction force required during discharge.

[0012] According to one aspect of the embodiments of this application, the sludge extraction structure includes: a sludge pump pipe connected to the input end of a sludge pump and made of a flexible material; a sludge suction pipe connected to the end of the sludge pump pipe away from the sludge pump; the angle of the open end of the sludge suction pipe gradually increases to increase the suction area; an adjusting connector connected between the dredging vessel hull and the sludge pump pipe for fine-tuning the angle of the sludge pump pipe; and a fixing frame disposed on the outside of the dredging vessel hull to provide a fixing area for the adjusting connector.

[0013] According to one aspect of the embodiments of this application, the adjusting connector includes: a rotating connecting frame fixed to the fixed frame via a rotating shaft, a connecting rod located below the rotating connecting frame and with an adjustable length, and a pipe positioning sleeve fixed to the lower end of the connecting rod and with an inner diameter adapted to the outer diameter of the sludge pump pipe. The rotating connecting frame has a predetermined degree of freedom, and the connecting rod is length-adjustable according to the sludge suction requirements.

[0014] The angle and position of the sludge pump pipe can be adjusted by rotating the connecting frame and adjusting the connecting rod. The rotating connecting frame changes the angle of the pump pipe, while the connecting rod adjusts the horizontal or vertical distance of the pump pipe. Through their coordinated operation, precise suction operations can be achieved according to different working environments and sludge removal needs. The design of the adjusting connector ensures both flexibility and stability. By rotating the connecting frame and adjusting the connecting rod, the pipe position can be adjusted, while the fixing sleeve ensures a stable connection between the pump pipe and the adjustment system, preventing vibration or pipe loosening during the suction process.

[0015] According to one aspect of the embodiments of this application, the silt removal equipment includes: a track fixed to the outer side of the river channel and extending to the inner side of the river channel; a displacement main board slidably connected to the track and moving back and forth along the track; a silt removal main pipe fixed to the displacement main board; a guide tube located at the upper end of the silt removal main pipe and whose opening gradually increases upward from the silt removal main pipe; and a discharge connection hose connected to the other end of the silt removal main pipe and stretched with the movement of the displacement main board.

[0016] According to one aspect of the embodiments of this application, the dredging vessel further includes: a power drive system for driving the dredging vessel to move in the river channel, so that the dredging and conveying component can be docked with dredging equipment at different locations.

[0017] Secondly, a dredging method is proposed, including the following steps: S1. Silt Dispersion: The dredging component is adjusted to the preset angle, and the drive component drives the silt dispersion component to rotate, dispersing the solidified silt on both sides and bottom of the river channel to ensure that the silt looseness meets the suction standard. S2. The sludge extraction structure adjusts the angle and depth by adjusting the connecting parts, and pumps the broken sludge into the sludge temporary storage chamber. The controller monitors the liquid level in the chamber in real time. S3. When the liquid level in the temporary storage tank reaches the predetermined discharge level, the discharge decision algorithm is activated to select the optimal matching sludge removal equipment. The dredging vessel moves to the target position, and the sludge removal and conveying components precisely connect with the matching sludge removal equipment and dynamically adjust the flow rate and pressure for discharge. S4. Cyclic Operation: After discharge, the dredging vessel continues dredging, repeating steps S1-S3 until the entire river channel is dredged.

[0018] Compared with the prior art, the beneficial effects of the present invention are: By setting at least three sludge extraction structures along the circumference of the dredging vessel, combined with the pre-dispersal operation of the front-end dredging components, an integrated "dispersal-suction" process covering the entire river channel is achieved, avoiding the limitations of traditional equipment operating in only one direction. With the sludge discharge equipment distributed along both sides of the river, the dredging vessel can complete the discharge without returning to the shore, solving the problem of "full-capacity shutdown".

[0019] The dredging component features an adjustable angle design, which can specifically treat the solidified silt on both sides and bottom of the river. The silt extraction structure can be adjusted in both angle and length through the adjustment of the connecting parts, adapting to different water depths and silt layers. The silt discharge and conveying component adopts a telescopic extension pipe, combined with the track-type displacement design of the silt discharge equipment, which can be adapted to small and medium-sized rivers of different widths and complex terrains such as bends and narrow sections. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a combined ecological dredging device and dredging method for small and medium-sized rivers according to the present invention.

[0021] Figure 2 This is a schematic diagram of the dredging equipment in Embodiment 1 of the present invention.

[0022] Figure 3 This is a perspective view of the dredging equipment in Embodiment 1 of the present invention.

[0023] Figure 4 This is a front view of the dredging equipment in Embodiment 2 of the present invention.

[0024] Figure 5 This is a perspective view of the dredging equipment in Embodiment 2 of the present invention.

[0025] Figure 6 This is a perspective view of the adjusting connector in Embodiment 1 of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the sludge removal equipment used in conjunction with the present invention.

[0027] In the diagram: 1. Dredging equipment; 2. Dredging components; 3. Dredging and conveying components; 4. Sludge extraction structure; 5. Co-drainage equipment; 11. Dredging hull; 12. Bow; 13. Sludge temporary storage chamber; 14. Controlled discharge chamber; 21. Adjusting frame; 22. Drive component; 23. Sludge dispersing component; 31. Extended discharge pipe; 32. Guide pipe; 33. Suction pump; 41. Sludge pump pipe; 42. Sludge suction pipe; 43. Adjusting connector; 44. Fixing frame; 431. Rotating connecting frame; 432. Connecting rod; 433. Pipe positioning sleeve; 51. Track; 52. Displacement main plate; 53. Main discharge pipe; 54. Guide cylinder; 55. Discharge connection hose. Detailed Implementation

[0028] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0029] The applicant argues that traditional equipment mostly operates in one direction, making it difficult to cover both sides and the bottom of the river simultaneously. It also lacks the capacity to handle solidified silt, requiring multiple round trips and resulting in a long dredging cycle.

[0030] Example 1 To address these issues, the applicant designed a modular ecological dredging device for small and medium-sized rivers, aiming to solve problems such as low efficiency, poor adaptability, and discontinuous discharge during dredging of these rivers. This device, through modular design and a flexible adjustable structure, achieves uniform extraction, temporary storage, and directional discharge of silt from the entire river channel.

[0031] like Figure 1 As shown, the system specifically includes: dredging equipment 1, sludge conveying components 3, sludge extraction structures 4, and supporting sludge extraction equipment 5. The dredging hull 11 is the main body of the equipment, equipped with multiple sludge extraction structures 4 to extract and temporarily store sludge from the river channel within the hull. This reduces hull movement during dredging, improving dredging efficiency. The actual distribution of the extraction structures is based on variations in depth, width, and sludge thickness on both sides of the river channel, ensuring uniform extraction of sludge throughout the entire river channel. Multiple sludge conveying components 3 are arranged along the vertical centerline of the hull, uniformly guiding the sludge within the hull to the supporting sludge extraction equipment 5. The sludge conveying components 3 are flexible, allowing for precise alignment with the discharge positions of each supporting sludge extraction equipment 5 by adjusting their range of motion and angle, minimizing sludge residue. The supporting sludge extraction equipment 5 is arranged along both sides of the river channel to achieve final sludge discharge. By guiding the discharged sludge to the discharge position, rapid and effective sludge discharge is ensured without affecting the continuity of dredging operations.

[0032] In the above embodiments, the bow 12 of the dredging vessel 11 gradually narrows, which improves the vessel's fluidity in the water, reduces water resistance, and ensures smoother movement in the river, especially in narrow or winding channels. A sludge storage chamber 13 is located at the center of the hull, temporarily storing the pumped-up sludge and providing reserve space for subsequent discharge. Its central location helps balance the vessel's center of gravity, preventing instability caused by a shift in the center of gravity. A discharge control chamber 14 is located at the stern of the hull and contains the controller and sludge pump. The concentrated installation of the controller and sludge pump at the stern facilitates precise control of sludge discharge. The controller system at the stern of the dredging vessel 11 can monitor various parameters (sludge volume, discharge pressure, flow rate) in real time during the discharge process.

[0033] like Figures 2 to 3 As shown, the sludge removal and conveying assembly 3 includes: an extended discharge pipe 31, a guide pipe 32, and a suction pump 33. The extended discharge pipe 31 is located on the outside of the dredging vessel hull 11. The extended discharge pipe 31 can flexibly adjust its discharge length according to the actual width of the river and the dredging range to ensure that the sludge can be effectively discharged to the predetermined location. The adjustable discharge length is suitable for river sections of varying widths, avoiding the limitations of fixed-length pipes. In actual use, the extended discharge pipe 31 is configured as a telescopic structure, and the length and direction of the pipe are automatically adjusted by a hydraulic or electric drive system, allowing the discharge pipe to be flexibly adjusted as needed to ensure efficient dredging of river sections of different widths. The guide pipe 32 is connected to one end of the extended discharge pipe 31, and its inclination angle matches the inner wall of the dredging vessel hull 11. The guide pipe 32 ensures that the sludge flows smoothly from inside the dredging vessel hull 11 to the discharge pipe without causing blockage or backflow. The suction pump 33 is fixed at the other end of the guide pipe 32, providing the suction required for discharge. The function of the suction pump 33 is to provide the necessary suction for the discharge process, ensuring that the sludge can flow smoothly in the discharge pipe and be discharged quickly. The suction pump 33 can be a screw pump (3G type), submersible sewage pump (WQ, QW type), gear pump (JY type), centrifugal pump (ISG type), or piston pump (DP type); the selection is based on the flow rate, head, viscosity, and particle size of the river sludge to be cleaned.

[0034] like Figures 2 to 3As shown, the sludge extraction structure 4 includes: a sludge pump pipe 41, a sludge suction pipe 42, an adjusting connector 43, and a fixing frame 44. The sludge pump provides sufficient suction to extract the sludge from the bottom to the dredging vessel hull 11 or storage area. The flexible sludge pump pipe 41 can adapt to different working environments, withstand irregular underwater movements and vibrations, and is easy to install and adjust. The sludge pump pipe 41 is made of wear-resistant, corrosion-resistant, and highly flexible materials such as rubber, polyurethane, PVC, or wear-resistant steel pipe, ensuring that it is not easily damaged during prolonged contact with the underwater environment. The sludge suction pipe 42 is connected to the flexible pump pipe and is responsible for sucking up the sludge from the bottom. The angle of the open end of the suction pipe gradually increases, which helps to increase the suction area and improve the suction efficiency, especially when the sludge is viscous or contains impurities, to avoid clogging, increase the fluid flow space, and ensure efficient suction at different depths. During the dredging operation, the adjusting connector 43 optimizes the position of the pump pipe by finely adjusting the angle of the sludge pump pipe 41 to adapt to different dredging needs and terrain. The adjusting connector 43 provides sufficient flexibility to ensure that the suction pipe can more effectively contact the silt. The fixing bracket 44 is located on the outside of the dredging vessel hull 11 and provides an area for fixing the adjusting connector 43.

[0035] In the above embodiments, further, as Figure 6 As shown, the adjusting connector 43 includes a rotating connecting frame 431, a connecting rod 432, and a pipe positioning sleeve 433. The rotating connecting frame 431 is connected to the fixed frame 44 via a rotating shaft. The rotating connecting frame 431 rotates around the rotating shaft, thereby adjusting the angle of the sludge pump pipe 41. This provides flexibility for dredging operations, allowing the suction pipe to be adjusted according to actual conditions to adapt to different water areas, terrains, and operating depths. The rotating connecting frame 431 has sufficient freedom to ensure unobstructed angle adjustment. The connecting rod 432 is located below the rotating connecting frame 431, and its length can be adjusted according to sludge suction requirements. It can cope with different working environments. Under different water depths and different sludge layers, adjusting the length of the connecting rod 432 ensures that the suction end of the sludge pump pipe 41 is always in a suitable suction position. In actual use, the length adjustment of the connecting rod 432 is carried out hydraulically or manually. This ensures its stability within different length ranges and avoids pump pipe instability or damage due to excessive extension or contraction. The pipe positioning sleeve 433 is located at the lower end of the connecting rod 432. Its inner diameter matches the outer diameter of the sludge pump pipe 41, ensuring a stable connection between the pump pipe and the adjusting connector 43 and preventing the sludge pump pipe 41 from shifting or loosening during operation. The rotating connecting bracket 431 has a certain degree of freedom, not only rotating via the rotating shaft but also tilting or swinging, so as to further optimize the angle adjustment according to the actual situation.

[0036] like Figure 7As shown, the sludge removal equipment 5 includes: a track 51, a displacement main plate 52, a sludge removal main pipe 53, a flow guide tube 54, and a discharge connection hose 55. The track 51 is installed on the outside of the river channel and extends to the inside of the river channel, providing a movement path for the equipment. This allows the equipment to effectively move back and forth along the river channel for sludge removal operations. The displacement main plate 52 is slidably connected to the track 51, allowing back and forth movement along the track 51. The displacement main plate 52 fixes the sludge removal main pipe 53 and is responsible for guiding the movement and operation of the sludge removal main pipe 53. The design using guide rails and rollers ensures smooth sliding. The sludge removal main pipe 53, as the main channel for conveying sludge, is responsible for guiding the sludge extracted from the water to the discharge area. It is fixed to the displacement main plate 52 and moves with it to ensure that the sludge is effectively discharged. The flow guide tube 54 is located at the upper end of the sludge removal main pipe 53. The flow guide tube 54 guides the flow of sludge, ensuring that its opening gradually increases upward from the sludge removal main pipe 53 to reduce fluid resistance and achieve smooth fluid discharge. The discharge connection hose 55 connects the other end of the main discharge pipe 53 to the discharge area, and its length can be extended as the displacement main plate 52 moves. The discharge connection hose 55 is flexible and can adapt to the expansion and contraction requirements of the equipment during reciprocating motion. The main discharge pipe 53 guides the sludge to the sludge treatment equipment on the shore for further sedimentation, separation and treatment.

[0037] In actual use, the displacement main board 52, through the reciprocating motion of the track 51, moves the main discharge pipe 53 and the guide tube 54 to different positions in the river for dredging operations. The main discharge pipe 53 guides the silt out through the guide tube 54, and the discharge connection hose 55 transports the silt to the designated discharge area. The stretching function of the discharge connection hose 55 ensures that the dredging equipment can flexibly adjust the discharge position during operation to cope with different river morphologies and dredging needs. The gradually increasing opening design of the guide tube 54 effectively reduces fluid resistance, making silt discharge smoother and preventing blockages. Combined with the flexible movement of the displacement main board 52, the entire dredging system can maintain high efficiency under different water conditions and working conditions.

[0038] Example 2 Based on Example 1, this example adds a dredging component 2 to solve the problem of sludge consolidation and difficulty in complete extraction caused by long-term accumulation. The sludge is pre-dispersed to improve the suction efficiency. The specific improvements are as follows: like Figure 4 and Figure 5As shown, the dredging vessel hull 11 is equipped with at least two dredging components 2, capable of simultaneously treating silt on both sides and the bottom of the river channel. This improves the efficiency of dredging operations and avoids the limitations of unidirectional operation. The dredging components 2 are positioned at the front of the hull, allowing direct contact with and dispersing of the silt. The dredging components 2 can enter the silt layer first as the vessel moves through the river channel to disperse the silt, ensuring that the silt does not accumulate at the rear due to the vessel's movement. The working angle of the dredging components 2 is adjustable to adapt to the different silt dispersing needs on both sides and the bottom of the river channel. This allows for efficient operation in both shallow and deep waters. The adjustment device should have sufficient stability to ensure that the angle adjustment does not easily cause deviation or instability. At the bottom of the river channel, the components can be more parallel to the ground to penetrate the silt layer, while on both sides of the river channel, the components can be adjusted to a more vertical angle to adapt to lateral dredging needs.

[0039] The dredging assembly 2 includes an adjusting frame 21, a drive component 22, and a sludge dispersing component 23. The adjusting frame 21 connects the dredging assembly 2 to the dredging vessel hull 11, providing an installation and connection area for the dredging assembly 2 and ensuring the stability of the drive component 22 and the sludge dispersing component 23 during operation. The drive component 22 is located inside the adjusting frame 21 and is rotatably connected to it. By rotating the drive component 22, the dredging assembly 2 can adjust its working angle to adapt to different sludge dispersing requirements. The power output end of the drive component 22 should be able to stably transmit power to the sludge dispersing component 23. The drive component 22 is an electric motor, and the sludge dispersing component 23 is connected to the power output end of the drive component 22 to perform the actual sludge dispersing work. Rotation disperses the sludge, making it easier to clean and extract. The adjusting frame 21 can adjust the working angle in one direction by driving the drive component 22 and the sludge dispersing component 23. By adjusting the angle, the dredging component 2 can better adapt to the dredging needs of different water areas and different depths. The adjustment frame 21 is driven by a stepper motor, which adjusts the angle of the drive component 22 and the dredging component 23.

[0040] In actual use, during dredging operations, the dredging component 2 operates before the silt extraction structure 4. The drive component 22 rotates the silt dispersing component 23, and the working angle is adjusted by the adjusting frame 21 to disperse and loosen the solidified silt accumulated on both sides and the bottom of the river channel. The dispersed silt is easier to extract. Subsequently, the silt extraction structure 4 extracts the silt to the silt temporary storage chamber 13 according to the workflow of Example 1, and the subsequent silt discharge process is the same as in Example 1. This improvement can significantly improve the silt extraction efficiency and avoid the problem of incomplete extraction caused by silt solidification.

[0041] Example 3 Based on the equipment structures of Examples 1 and 2, a dredging method is proposed during the dredging process, including the following steps: S1. The dredging component 2 is used to break up the solidified silt on both sides and the bottom of the river. The adjusting frame 21 drives the silt breaking component 23 to a preset angle (30°~60° on the side and 0°~15° on the bottom) to ensure that the looseness of the silt meets the suction standard.

[0042] S2, the sludge extraction structure 4 adjusts the suction angle and depth in real time by adjusting the connecting piece 43, and sucks the broken sludge into the sludge temporary storage chamber. The controller monitors the liquid level in the temporary storage chamber in real time.

[0043] S3. When the liquid level in the temporary storage tank reaches the preset threshold (70%~80%), the discharge decision algorithm is activated to select the optimal matching sludge removal equipment 5; the dredging vessel moves to the target discharge position, the sludge removal and conveying component 3 and the matching sludge removal equipment 5 are precisely docked and the discharge is executed, and the flow rate and pressure are dynamically adjusted during the discharge process.

[0044] S4. After the discharge is completed, the dredging vessel returns to the dredging area and repeats the above steps until the entire river channel is dredged.

[0045] In S3, to select the optimal sludge discharge equipment 5 for discharge, a multi-parameter weighted decision algorithm is used, as follows: First, the controller collects parameters and obtains the following data: Current level of sludge in temporary storage tank (L, unit: %); Current coordinates of dredging vessel hull 11 ( ) and moving speed (V, unit: m / min); coordinates with the silt removal equipment 5 ( Real-time status (idle / working) and historical emission efficiency ( Units: m³ / h); real-time water flow velocity in the river (U, unit m / s); and the safe distance between the dredging vessel 11 and the riverbank (S, unit m).

[0046] The straight-line distance from the hull to each available silt removal device is calculated using the Euclidean distance formula: Correcting the actual distance based on the influence of water flow: For every 1 m / s increase in water flow velocity, the correction factor increases by 0.1.

[0047] Calculate a comprehensive score for each candidate device. : in, =0.5 distance weight, =0.3 efficiency weight, =0.2 safety weight, which is dynamically adjusted according to the complexity of the river channel.

[0048] Select the highest-scoring sludge discharge equipment 5 as the target discharge point. If the scores are the same, prioritize the equipment that is closer. When the liquid level in the sludge temporary storage chamber 13 is ≥90%, trigger the emergency discharge mechanism and select the nearest available equipment.

[0049] When the sludge removal and conveying component 3 docks with the cooperating sludge removal equipment 5, as the dredging vessel hull 11 moves toward the target cooperating sludge removal equipment 5, the extended discharge pipe 31 extends to a preset length (initial length = ); After receiving the docking signal, the displacement main board 52 moves along the track 51 to the preset docking position, the center of the guide tube 54 is aligned with the vertical center line of the hull (deviation ≤ 5cm), and the discharge connection hose 55 is pre-stretched to a safe length.

[0050] An infrared positioner is installed on the top of the guide tube 54, and a receiving sensor is installed at the end of the extended discharge pipe 31 to provide real-time feedback on position deviation. The controller adjusts based on the deviation value: lateral deviation When the distance is greater than 5cm, adjust the hull to change its lateral position. If the length is greater than 3cm, adjust the length of the extended discharge pipe 31.

[0051] After docking is completed; the suction pump 33 is started, with the initial flow rate set to 60% of the design flow rate, and dynamically adjusted according to the viscosity of the sludge (the flow rate is reduced by 20% when the viscosity is >500cP); the controller monitors the liquid level of the sludge temporary storage chamber in real time, and when the liquid level drops to 20%, a deceleration discharge signal is issued, and the suction pump pressure gradually decreases to 0.1MPa; after discharge is completed, the extended discharge pipe 31 retracts to the initial position, and the displacement main board 52 of the sludge discharge equipment 5 is reset, waiting for the next docking.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A combined ecological dredging device for small and medium-sized rivers, characterized in that, include: Dredging equipment and multiple supporting dredging and discharge equipment; Multiple of the aforementioned silt removal devices are distributed sequentially along both sides of the river channel to receive and discharge silt; The dredging equipment is configured as a dredging vessel hull, which includes: The silt extraction structure is provided with at least three silt extraction structures along the circumference of the dredging vessel, which are used to extract silt from the river channel into the dredging vessel for temporary storage. The sludge removal and conveying assembly is used to guide the sludge temporarily stored in the dredging vessel to the sludge removal equipment. At least two sludge discharge and conveying components are symmetrically arranged along the vertical centerline of the dredging vessel. When the sludge discharge and conveying components move to the discharge position corresponding to the cooperating sludge discharge equipment, they guide the sludge to the cooperating sludge discharge equipment so as to achieve the final discharge of the sludge through the cooperating sludge discharge equipment.

2. The combined ecological dredging equipment for small and medium-sized rivers according to claim 1, characterized in that, The dredging vessel also includes at least two dredging components. The dredging components are located at the front end of the dredging vessel and are used to break up the silt on both sides and the bottom of the river. The working angle of the dredging components is adjustable to adapt to the silt breaking up operation requirements at different locations on both sides and the bottom of the river.

3. The combined ecological dredging equipment for small and medium-sized rivers according to claim 2, characterized in that, The dredging component includes: An adjustment frame is fixed to the hull of the dredging vessel and provides an overall installation and connection area for the dredging components. A drive component is located inside the adjustment frame and is rotatably connected to the adjustment frame to adjust the working angle. The sludge dispersing component is connected to the power output end of the drive component and is used to perform sludge dispersing action; The adjusting frame drives the driving component and the sludge dispersing component to adjust the angle in one direction, which can disperse the sludge on the side and below.

4. The combined ecological dredging equipment for small and medium-sized rivers according to claim 1, characterized in that, The dredging vessel has a bow at its front end, with the bow angle gradually narrowing; a sludge storage chamber is located at the center of the dredging vessel; and a control discharge chamber is located at the rear of the dredging vessel, providing an area for installing a controller and a sludge pump.

5. The combined ecological dredging equipment for small and medium-sized rivers according to claim 1, characterized in that, The sludge removal and conveying assembly includes: An extended discharge pipe is located outside the hull of the dredging vessel, with the extension length set according to the width of the river channel. The guide pipe is connected to one end of the extended discharge pipe near the hull of the dredging vessel, and its inclination angle is adapted to the inclination angle of the inner wall of the dredging vessel. A suction pump, fixed to the other end of the guide tube, is used to provide the suction required for discharge.

6. The combined ecological dredging equipment for small and medium-sized rivers according to claim 1, characterized in that, The sludge extraction structure includes: The sludge pump pipe is connected to the input end of the sludge pump and is made of flexible material; A sludge suction pipe is connected to the end of the sludge pump pipe away from the sludge pump; the angle of the open end of the sludge suction pipe gradually increases to increase the suction area. An adjusting connector is connected between the dredging vessel hull and the sludge pump pipe to drive the sludge pump pipe to make fine angle adjustments. A fixing frame is installed on the outside of the dredging vessel hull to provide a fixing area for the adjusting connector.

7. A combined ecological dredging device for small and medium-sized rivers according to claim 6, characterized in that, The adjusting connector includes: The rotating connecting frame is fixed to the fixed frame via a rotating shaft; The connecting rod is located below the rotating connecting frame and its length is adjustable. A pipe positioning sleeve is fixed to the lower end of the connecting rod, and its inner diameter is adapted to the outer diameter of the sludge pump pipe. The rotating connecting frame has a predetermined degree of freedom, and the length of the connecting rod can be adjusted according to the sludge suction requirements.

8. A combined ecological dredging device for small and medium-sized rivers according to claim 1, characterized in that, The accompanying sludge removal equipment includes: The track is fixed to the outside of the river channel and extends from the edge to the inside of the river channel. The displacement main board is slidably connected to the track and moves along it to its original position. The main sludge discharge pipe is fixed to the displacement main plate; The guide tube is located at the upper end of the main sludge discharge pipe, and its opening gradually increases upward from the main sludge discharge pipe; The discharge connection hose is connected to the other end of the main discharge pipe and is stretched as the displacement main board moves.

9. A combined ecological dredging device for small and medium-sized rivers according to claim 1, characterized in that, The dredging vessel also includes a power drive system for moving the dredging vessel within the river channel, enabling the dredging and conveying components to connect with corresponding dredging equipment at different locations.

10. A dredging method for a combined ecological dredging equipment for small and medium-sized rivers according to any one of claims 1-9, characterized in that, Includes the following steps: S1. The dredging components break up the solidified silt on both sides and the bottom of the river channel. The adjusting frame drives the silt breaking component to a preset angle to ensure that the silt looseness meets the suction standard. S2. The sludge extraction structure adjusts the suction angle and depth in real time by adjusting the connecting parts, and sucks the broken sludge into the sludge temporary storage chamber. The controller monitors the liquid level in the temporary storage chamber in real time. S3. When the liquid level in the temporary storage tank reaches the preset threshold, the discharge decision algorithm is activated to select the optimal matching sludge removal equipment. The dredging vessel moves to the target discharge position, and the sludge removal and conveying components and matching sludge removal equipment are precisely docked and discharge is executed, with dynamic adjustment of flow rate and pressure. S4. After the discharge is completed, the dredging vessel returns to the dredging area and repeats the above steps until the entire river channel is dredged.

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