Dredging device for treating river channel
By using a servo motor-driven dredging vessel and gear transmission system, combined with a water pump system, the rotating drum can achieve both revolution and rotation, solving the problem of low mixing effect in existing devices and enabling rapid mixing, dredging, and discharge of sludge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-03-31
AI Technical Summary
Existing mixing and dredging devices use the same speed and the same mixing channel, resulting in low mixing effect. They cannot simultaneously use water to wash and mix the sludge, leading to poor water-like mixing of the sludge and affecting the rapid dredging and discharge of the sludge.
The dredging vessel, driven by a servo motor and combined with a gear transmission and water pump system, realizes the revolution and rotation of the drum. It uses different stirring speeds and centrifugal water jets to flush and stir the silt, thereby improving the mixing effect.
It enables the rapid mixing of silt into a watery state, facilitating dredging and drainage, and improving dredging efficiency.
Smart Images

Figure CN224063551U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of river dredging technology, specifically to a dredging device for river management. Background Technology
[0002] River dredging refers to the removal of silt and sediment from river channels by manual or mechanical means in order to restore and maintain the normal function of the river. This process is crucial for ensuring functions such as flood control, drainage, irrigation, water supply, and navigation. During river dredging, equipment can be used to mix the silt, making it into a turbid water-like state, which is easier to carry away with the river water or to pump out.
[0003] However, the currently used mixing and dredging devices only use the same speed and the same mixing channel to mix the sludge, resulting in a low mixing effect. Furthermore, they cannot use water to wash and mix the sludge simultaneously, which makes the sludge mixing watery and ineffective, hindering the rapid dredging and discharge of the sludge.
[0004] Therefore, we proposed a dredging device for river management to address the aforementioned problems. Utility Model Content
[0005] The purpose of this invention is to provide a dredging device for river management, in order to solve the problem mentioned in the background art that the mixing dredging devices currently used on the market only use the same speed and the same mixing channel to mix the silt, resulting in a low mixing effect. Furthermore, they cannot use water to wash and mix the silt simultaneously, which results in a watery silt mixture and is not conducive to the rapid dredging and discharge of silt.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a dredging device for river management, comprising a dredging vessel, a servo motor installed at the end of the dredging vessel, a lead screw connected to the output end of the servo motor, a movable frame threaded to the outer side of the lead screw, a limit rod passing through one end of the movable frame, the lower end of the limit rod being connected to the dredging vessel, and an installation plate installed at the other end of the movable frame;
[0007] A gear ring is connected to the lower side of the mounting plate, and a rotating rod is rotatably connected to the middle of the mounting plate via a bearing. A third gear is keyed to the outer side of one end of the rotating rod that extends out of the mounting plate. A drive motor is mounted on the top of the mounting plate, and a second gear is keyed to the output end of the drive motor. The second gear and the third gear mesh with each other.
[0008] The lower end of the rotating rod is connected to a turntable, a limit ring is provided on the lower side of the turntable, a rotating cylinder is connected to the outer edge of the limit ring, a first gear is connected to the upper end of the rotating cylinder, a stirring blade is installed in the lower section of the rotating cylinder, a through groove is opened in the lower section of the rotating cylinder, and a filter cylinder is connected to the lower flange of the rotating cylinder.
[0009] A water pump is installed above the mounting plate. The water pump's inlet end is connected to an inlet pipe, and the water pump's outlet end is connected to an outlet pipe. One end of the outlet pipe passes through a rotating rod.
[0010] Preferably, the movable frame and the limiting rod form a sliding structure, and the limiting rod and the lead screw are distributed parallel to each other.
[0011] Preferably, the gear ring and the first gear are located in the same horizontal plane, and the gear ring and the first gear mesh with each other.
[0012] Preferably, the rotating cylinder forms a rotating structure with the turntable through a limiting ring, and the interiors of the turntable, rotating cylinder, and rotating rod are all hollow, and the turntable, rotating cylinder, and rotating rod are interconnected.
[0013] Preferably, the positions of the stirring blade and the through groove are staggered, and the position of the through groove is blocked by a filter cylinder.
[0014] Preferably, the end of the water outlet pipe that extends into the rotating rod has an inverted "T" shape, and the rotating rod and the water outlet pipe form a rotating structure.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] (1) The dredging device for river management can control the rotating drum to follow the rotating drum to revolve by controlling the rotating disc to roughly stir the silt. At the same time, the rotating drum can be controlled to rotate by the meshing gear ring and the first gear to finely stir the silt. The silt can be mixed by using different stirring methods to improve the mixing effect of the silt.
[0017] (2) The dredging device for river management can control the flow of water into the rotating drum while the drum is rotating to mix the silt. The water is then centrifugally sprayed out from the channel. The sludge is quickly mixed into a watery state by the flushing of water and the mixing of the rotating drum and the mixing blade, which makes it easy to dredge and discharge the silt. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the rotating drum structure of this utility model;
[0020] Figure 3This is a bottom view of the mounting plate structure of this utility model;
[0021] Figure 4 This is a cross-sectional view of the mounting plate of this utility model;
[0022] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the diagram;
[0023] Figure 6 This is a schematic diagram of the connection structure between the rotating rod and the water outlet pipe of this utility model.
[0024] In the diagram: 1. Dredging vessel; 2. Servo motor; 3. Lead screw; 4. Moving frame; 5. Limiting rod; 6. Mounting plate; 7. Gear ring; 8. Limiting ring; 9. Rotary drum; 10. First gear; 11. Agitator blade; 12. Through groove; 13. Filter cylinder; 14. Drive motor; 15. Second gear; 16. Rotating rod; 17. Third gear; 18. Water outlet pipe; 19. Water pump; 20. Water inlet pipe; 21. Turntable. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figures 1-6 The present invention provides the following technical solution: a dredging device for river management, including a dredging vessel 1, a servo motor 2 installed at the end of the dredging vessel 1, a lead screw 3 connected to the output end of the servo motor 2, a movable frame 4 threadedly connected to the outer side of the lead screw 3, a limit rod 5 passing through one end of the movable frame 4, the lower end of the limit rod 5 being connected to the dredging vessel 1, and an installation plate 6 installed at the other end of the movable frame 4.
[0027] Furthermore, the movable frame 4 and the limiting rod 5 form a sliding structure. The limiting rod 5 and the lead screw 3 are distributed parallel to each other. The limiting rod 5 is used to limit the movable frame 4 so that it can move vertically.
[0028] A gear ring 7 is connected to the lower side of the mounting plate 6. A rotating rod 16 is rotatably connected to the middle of the mounting plate 6 via a bearing. A third gear 17 is keyed to the outer side of one end of the rotating rod 16 extending out of the mounting plate 6. A drive motor 14 is mounted on the top of the mounting plate 6. A second gear 15 is keyed to the output end of the drive motor 14. The second gear 15 and the third gear 17 mesh with each other. A turntable 21 is connected to the lower end of the rotating rod 16. A limit ring 8 is provided on the lower side of the turntable 21. A rotating cylinder 9 is connected to the outer edge of the limit ring 8. A first gear 10 is keyed to the upper end of the rotating cylinder 9. A stirring blade 11 is installed in the lower section of the rotating cylinder 9. A through groove 12 is opened in the lower section of the rotating cylinder 9. A filter cylinder 13 is connected to the lower flange of the rotating cylinder 9.
[0029] Furthermore, the gear ring 7 and the first gear 10 are located in the same horizontal plane, and the gear ring 7 and the first gear 10 mesh with each other. When the rotating drum 9 rotates with the turntable 21, it drives the rotating drum 9 to rotate on its own.
[0030] Furthermore, the rotating drum 9 forms a rotating structure with the rotating disk 21 through the limiting ring 8. The interiors of the rotating disk 21, the rotating drum 9, and the rotating rod 16 are all hollow. The rotating disk 21, the rotating drum 9, and the rotating rod 16 are interconnected to ensure the stable rotation of the rotating drum 9 and to allow the water flow to be smoothly delivered into the rotating drum 9 for centrifugal spraying.
[0031] Furthermore, the positions of the stirring blade 11 and the channel 12 are staggered, and the position of the channel 12 is blocked by the filter cylinder 13, so that while the stirring blade 11 mixes the sludge, the water washes the sludge.
[0032] A water pump 19 is installed above the mounting plate 6. The water inlet end of the water pump 19 is connected to the water inlet pipe 20, and the water outlet end of the water pump 19 is connected to the water outlet pipe 18. One end of the water outlet pipe 18 passes through the rotating rod 16.
[0033] Furthermore, the end of the water outlet pipe 18 that extends into the rotating rod 16 has an inverted "T" shaped structure. The rotating rod 16 and the water outlet pipe 18 form a rotating structure, which realizes the connection between the water outlet pipe 18 and the rotating rod 16 while ensuring that the rotating rod 16 rotates smoothly.
[0034] Specifically, when using this dredging device for river management, the dredging vessel 1 floats on the river. The servo motor 2 is powered on, causing it to rotate forward, which in turn controls the lead screw 3 connected to the output end to rotate. This, in turn, controls the movable frame 4 connected to the outer thread to move downwards. The movable frame 4 slides on the limit rod 5, limiting its vertical movement. The movable frame 4 drives the mounting plate 6 at its end to move downwards, allowing the rotating drum 9 and the stirring blade 11 to move into the river channel. The drive motor 14 is then powered on, controlling the second gear 15. The second gear 15 controls the meshing third gear 17 to rotate, which in turn controls the rotating rod 16 to rotate on the mounting plate 6, and drives the turntable 21 to rotate. The turntable 21 drives the rotating drum 9 to rotate, so that the rotating drum 9 and the stirring blade 11 above it can roughly stir the sludge. When the rotating drum 9 rotates with the turntable 21, the first gear 10 meshes with the gear ring 7, so it can drive the rotating drum 9 to rotate, which in turn drives the stirring blade 11 to rotate, finely stirring the sludge. Different stirring speeds are used to mix the sludge.
[0035] While the sludge is being stirred, the water pump 19 is connected to the power supply, and the inlet pipe 20 is connected to the external water source. Water is pumped through the water pump 19 to the outlet pipe 18, and then falls into the hollow turntable 21 along the hollow rotating rod 16. It is then diverted into the rotating drum 9. The centrifugal force of the rotating drum 9 causes the water to spray out from the through groove 12. The sludge is quickly mixed into a watery state by the flushing of the water and the stirring of the rotating drum 9 and the stirring blade 11, which facilitates the dredging and discharge of the sludge. The interception of the filter cylinder 13 can prevent the sludge from entering the rotating drum 9. After use, the servo motor 2 can be reversed, which in turn controls the lead screw 3 to reverse, driving the moving frame 4 to move upward, thereby controlling the mounting plate 6 to move upward, and then controlling the rotating drum 9 to move upward. When the filter cylinder 13 needs to be cleaned, the filter cylinder 13 connected to the flange of the rotating drum 9 can be removed and cleaned. The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A device for dredging a river, comprising a dredging vessel (1), characterized in that: The end of the dredging ship (1) is provided with a servo motor (2), the output end of the servo motor (2) is connected with a lead screw (3), the outer side of the lead screw (3) is threadedly connected with a moving frame (4), one end of the moving frame (4) penetrates through a limiting rod (5), the lower end of the limiting rod (5) is connected with the dredging ship (1), the other end of the moving frame (4) is provided with a mounting disc (6); The lower side of the mounting disc (6) is connected with a gear ring (7), the middle part of the mounting disc (6) is rotatably connected with a rotating rod (16) through a bearing, the outer side of one end of the rotating rod (16) extending out of the mounting disc (6) is keyed with a third gear (17), the upper side of the mounting disc (6) is provided with a driving motor (14), the output end of the driving motor (14) is keyed with a second gear (15), the second gear (15) and the third gear (17) are meshed with each other; The lower end of the rotating rod (16) is communicated with a rotating disc (21), the lower end side of the rotating disc (21) is provided with a limiting ring (8), the outer edge of the limiting ring (8) is connected with a rotating barrel (9), the upper end of the rotating barrel (9) is keyed with a first gear (10), the lower section of the rotating barrel (9) is provided with a stirring knife (11), the lower section of the rotating barrel (9) is provided with a through groove (12), the lower end flange of the rotating barrel (9) is connected with a filter barrel (13); The upper side of the mounting disc (6) is provided with a water pump (19), the water inlet end of the water pump (19) is communicated with a water inlet pipe (20), the water outlet end of the water pump (19) is communicated with a water outlet pipe (18), one end of the water outlet pipe (18) penetrates through the rotating rod (16).
2. The device for dredging a river according to claim 1, characterized in that: The moving frame (4) and the limiting rod (5) form a sliding structure, the limiting rod (5) and the lead screw (3) are distributed in parallel with each other.
3. The device for dredging a river according to claim 1, characterized in that: The gear ring (7) and the first gear (10) are located in the same horizontal plane, the gear ring (7) and the first gear (10) are meshed with each other.
4. The device for dredging a river according to claim 1, characterized in that: The rotating barrel (9) and the rotating disc (21) form a rotating structure through the limiting ring (8), the interiors of the rotating disc (21), the rotating barrel (9) and the rotating rod (16) are hollow, and the rotating disc (21), the rotating barrel (9) and the rotating rod (16) are communicated with each other.
5. The device for dredging a river according to claim 1, characterized in that: The positions of the stirring knives (11) and the positions of the through grooves (12) are staggered with each other, and the positions of the through grooves (12) are shielded by the filter barrel (13).
6. The device for dredging a river according to claim 1, characterized in that: The end of the water outlet pipe (18) extending into the rotating rod (16) is in a reverse "T" shape structure, and the rotating rod (16) and the water outlet pipe (18) form a rotating structure.