A port channel dredging and dredging device
By employing a bidirectional rotating cutter and stirring paddle structure in the dredging and clearing device, the blockage problem during the sludge suction process was solved, achieving a highly efficient waterway dredging effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGTZE RIVER YICHANG WATERWAY ENG BUREAU
- Filing Date
- 2025-06-30
- Publication Date
- 2026-08-04
AI Technical Summary
Existing dredging devices are prone to clogging during the sludge suction process, which affects the normal progress of dredging work.
The rotating shaft is driven by the first and second motors that rotate in both directions, causing the first and second cutters to rotate in opposite directions, breaking up the debris in the sludge, and conveying the sludge through the spiral blades. At the same time, the stirring paddle is used to stir up the sludge to prevent blockage.
It effectively prevents dredging pipe blockage, ensures the smooth progress of waterway dredging operations, and improves dredging efficiency and reliability.
Smart Images
Figure CN224591510U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterway dredging technology, and in particular to a port waterway dredging and clearing device. Background Technology
[0002] Ports are transportation hubs located along the coast of the sea, rivers, lakes, and reservoirs, equipped with water-land intermodal transport facilities and conditions to allow ships to enter, exit, and berth safely. They are distribution centers for industrial and agricultural products and foreign trade import and export goods, as well as places for ships to berth, load and unload cargo, embark and disembark passengers, and replenish supplies. Because the silt accumulated in the port's waterways can affect the normal navigation of ships, the silt in the waterways is cleaned regularly.
[0003] Chinese utility model patent CN220847780U discloses a device for dredging and clearing waterways, comprising a hull, a dredging cylinder on one side of the hull, a lower cylinder fixedly installed on the upper side of the hull, an upper cylinder above the lower cylinder, a fixed frame rotatably mounted on the upper cylinder via a bearing, a connecting plate rotatably mounted on one side of the fixed frame via a pin, and the connecting plate being bolted to the dredging cylinder; the upper cylinder has an upper cavity inside, and the lower cylinder is inserted into the upper cavity; the lower cylinder has a lower cavity inside, and a hydraulic cylinder is installed inside the lower cavity, being bolted to the lower cylinder; the piston rod end of the hydraulic cylinder is inserted into the upper cavity and bolted to the upper cylinder. This dredging and clearing device, by driving the upper cylinder to move up and down, can move the dredging cylinder up and down, changing the height of the dredging cylinder, facilitating the cleaning of silt at different depths, and improving the practicality of the dredging and clearing device.
[0004] The dredging and unblocking device disclosed in the above-mentioned utility model patent uses the rotation of the dredging blades and dredging cutter to allow sludge to enter the dredging cylinder and be transported upwards. However, since the sludge contains various garbage, shellfish and other debris, directly sucking in the sludge can easily cause blockage of the dredging and unblocking device, affecting the normal progress of the dredging work. Utility Model Content
[0005] In view of the shortcomings of the existing technology, this utility model provides a port and waterway dredging and clearing device, which solves the problem of dredging and clearing devices directly sucking in silt and causing blockage.
[0006] According to an embodiment of this utility model, a port channel dredging and clearing device includes a dredging pipe, a rotatable first rotating shaft and a first motor connected to the first rotating shaft on the dredging pipe, a spiral blade on the first rotating shaft and a first cutter at one end of the first rotating shaft, the first cutter being located near the opening of the dredging pipe, a rotatable second rotating shaft being sleeved inside the first rotating shaft, a second motor connected to the second rotating shaft on the dredging pipe and the second motor driving the second rotating shaft to rotate in the opposite direction to the first motor driving the first rotating shaft to rotate, one end of the second rotating shaft extending out of the dredging pipe and a stirring paddle at the end of the second rotating shaft extending out of the dredging pipe, and a second cutter being sleeved on the second rotating shaft, the second cutter being located on the side of the first cutter away from the spiral blade.
[0007] Furthermore, the output end of the first motor is provided with a first gear, and a second gear is sleeved on the first rotating shaft and the second gear meshes with the first gear.
[0008] Furthermore, the sludge-dredging pipe is also provided with a mesh cover, which covers the opening of the sludge-dredging pipe and has a through hole for the first rotating shaft to pass through. The spiral blade is located in the space enclosed by the sludge-dredging pipe and the mesh cover, and the first cutter, the second cutter and the stirring paddle are located on the side of the mesh cover away from the spiral blade.
[0009] Furthermore, the mesh cover is provided with a plurality of first through holes at intervals, and the sludge removal pipe is provided with first mounting holes that are aligned one by one with the first through holes.
[0010] Furthermore, the sludge-dredging pipe is also equipped with a flow guide shroud, which is funnel-shaped and located at the opening of the sludge-dredging pipe and surrounds the stirring paddle.
[0011] Furthermore, the flow guide cover is provided with a plurality of second through holes at intervals, and the sludge removal pipe is provided with second mounting holes that are aligned one-to-one with the second through holes.
[0012] Furthermore, the end of the first rotating shaft has a threaded section, and the first cutter includes a first mounting cylinder with a first threaded hole that mates with the threaded section.
[0013] Furthermore, the end of the second rotating shaft is provided with a threaded rod, the second cutter includes a second mounting cylinder and the second mounting cylinder is provided with a third through hole for the threaded rod to pass through, the stirring paddle has a mounting post and the mounting post is provided with a second threaded hole that cooperates with the threaded rod and presses the second mounting cylinder onto the second rotating shaft.
[0014] Furthermore, the end of the mounting post away from the second rotation axis has a tapered portion.
[0015] Compared with the prior art, this utility model has the following beneficial effects: By using a first motor and a second motor to drive a first rotating shaft and a second rotating shaft mounted together to rotate in opposite directions, the first cutter on the first rotating shaft and the second cutter on the second rotating shaft rotate in opposite directions. Thus, during the dredging process, the first cutter and the second cutter break up the debris mixed in the sludge entering the dredging pipe, preventing the debris from clogging the dredging pipe. The rotation of the first rotating shaft drives the spiral blades to transport the sludge entering the dredging pipe, while the rotation of the second rotating shaft drives the stirring paddle to stir the sludge in the channel, causing the sludge to be turned up and enter the dredging pipe, thereby improving the dredging efficiency. It solves the technical problem of existing dredging and unblocking devices directly sucking in sludge and causing blockage, and produces the technical effect of preventing dredging pipe blockage and ensuring the smooth operation of channel dredging and unblocking. Moreover, it has high dredging efficiency and strong reliability. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a port and waterway dredging and clearing device according to an embodiment of the present invention;
[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0018] Figure 3 This is a cross-sectional view of a port and waterway dredging and clearing device according to an embodiment of the present invention;
[0019] Figure 4 for Figure 3 Enlarged view of point B in the middle.
[0020] In the above attached figures: 1. Dredging pipe; 11. First motor; 12. Second motor; 13. First gear; 14. First mounting hole; 15. Second mounting hole; 2. First rotating shaft; 21. Spiral blade; 22. First cutter; 23. Second gear; 24. Threaded section; 25. First mounting cylinder; 3. Second rotating shaft; 31. Agitator; 32. Second cutter; 33. Threaded rod; 34. Second mounting cylinder; 35. Mounting column; 36. Conical part; 4. Mesh cover; 41. First through hole; 5. Flow guide; 51. Second through hole. Detailed Implementation
[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0022] like Figures 1 to 4As shown in the figure, this utility model embodiment proposes a port channel dredging and clearing device, which is used to connect with the sludge suction pump on the dredging vessel to suck up the accumulated silt in the channel in order to clear the channel.
[0023] Please refer to Figure 1 , Figure 2 and Figure 3 The port channel dredging and clearing device includes a dredging pipe 1, on which a rotatable first rotating shaft 2 and a first motor 11 connected to the first rotating shaft 2 are mounted. The first rotating shaft 2 has a spiral blade 21 and a first cutter 22 at one end, positioned near the opening of the dredging pipe 1. When the first rotating shaft 2 rotates under the drive of the first motor 11, it drives the spiral blade 21 and the first cutter 22 to rotate, and the spiral blade 21, when rotating, transports the silt entering the dredging pipe 1 along the axial direction of the dredging pipe 1. A rotatable second rotating shaft 3 is fitted inside the first rotating shaft 2. A second motor 12 connected to the second rotating shaft 3 is mounted on the dredging pipe 1, and the direction in which the second motor 12 drives the second rotating shaft 3 to rotate is the same as the direction in which the first motor 11 drives the first rotating shaft 3. The first rotating shaft 2 rotates in the opposite direction. One end of the second rotating shaft 3 extends out of the dredging pipe 1, and a stirring paddle 31 is provided at the end of the second rotating shaft 3 extending out of the dredging pipe 1. A second cutter 32 is also sleeved on the second rotating shaft 3. The second cutter 32 is located on the side of the first cutter 22 away from the spiral blade 21. When the second rotating shaft 3 rotates under the drive of the second motor 12, it drives the stirring paddle 31 and the second cutter 32 to rotate. After the stirring paddle 31 extends into the silt accumulated in the channel, it stirs the silt with the rotation of the second rotating shaft 3 to turn up the silt accumulated in the channel and let the silt enter the dredging pipe 1. When the silt enters the dredging pipe 1, the first cutter 22 and the second cutter 32, which rotate in opposite directions, stir the debris in the silt and break the debris to prevent the debris from clogging the dredging pipe 1 during the transportation process.
[0024] Specifically, the working process of the port channel dredging and clearing device provided in this embodiment is as follows: the dredging vessel moves the port channel dredging and clearing device to the location on the channel that needs dredging and moves the dredging pipe 1 to insert the stirring paddle 31 into the silt. The suction pump, the first motor 11 and the second motor 12 are started respectively. At this time, the first rotating shaft 2 and the second rotating shaft 3, which are sleeved together, rotate in opposite directions. The rotation of the second rotating shaft 3 drives the stirring paddle 31 to stir the silt in the channel, causing the silt to turn up and enter the dredging pipe 1. The debris mixed in the silt that enters the dredging pipe 1 is crushed by the action of the first cutter 22 and the second cutter 32. Then, the rotation of the first rotating shaft 2 drives the spiral blade 21 to transport the silt that enters the dredging pipe 1. The silt is then sucked into the storage equipment on the dredging vessel by the suction pump, thus completing the dredging and clearing operation of the channel. The port channel dredging and clearing device provided in this embodiment uses the first cutter 22 and the second cutter 32 with opposite rotation directions to break up the debris in the silt, thereby preventing the dredging pipe 1 from getting blocked during the silt transport process, ensuring that the channel dredging and clearing operation is carried out smoothly, and with high dredging efficiency and high reliability.
[0025] like Figure 3 As shown, the output end of the first motor 11 is provided with a first gear 13, and a second gear 23 is sleeved on the first rotating shaft 2, with the second gear 23 meshing with the first gear 13. Through the cooperation of the first gear 13 and the second gear 23, the power output by the first motor 11 is transmitted to the first rotating shaft 2, so that the first rotating shaft 2 can rotate smoothly under the drive of the first motor 11 and drive the spiral blades 21 to rotate, which helps to improve the stability of the port channel dredging and clearing device during operation.
[0026] Please combine Figure 2 , Figure 3 and Figure 4 The sludge removal pipe 1 is also equipped with a mesh cover 4, which covers the opening of the sludge removal pipe 1 and has a through hole for the first rotating shaft 2 to pass through. The spiral blade 21 is located within the space enclosed by the sludge removal pipe 1 and the mesh cover 4. The first cutter 22, the second cutter 32, and the stirring paddle 31 are located on the side of the mesh cover 4 away from the spiral blade 21. The mesh cover 4 is positioned between the spiral blade 21 and the first cutter 22 to block debris with a particle size larger than the diameter of the mesh on the mesh cover 4. Debris entering the sludge removal pipe 1 is broken down to a particle size smaller than the diameter of the mesh on the mesh cover 4 by the action of the first cutter 22 and the second cutter 32, allowing it to pass through the mesh cover 4 and contact the spiral blade 21. This prevents debris with an excessively large diameter from being input into the sludge removal pipe 1 by the spiral blade 21 and causing blockage of the sludge removal pipe 1.
[0027] In detail, the mesh cover 4 is provided with a plurality of first through holes 41 spaced apart, and the dredging pipe 1 is provided with first mounting holes 14 aligned one by one with the first through holes 41. The mesh cover 4 can be fixed to the dredging pipe 1 by using screws passing through the first through holes 41 and engaging with the first mounting holes 14, ensuring a secure connection between the mesh cover 4 and the dredging pipe 1 and preventing the mesh cover 4 from accidentally falling off during the installation of the port channel dredging and clearing device.
[0028] like Figure 3 and Figure 4 As shown, the dredging pipe 1 is also equipped with a flow guide shroud 5. The flow guide shroud 5 is funnel-shaped and located at the opening of the dredging pipe 1, surrounding the stirring paddle 31. The flow guide shroud 5 is used to guide the sludge agitated by the stirring paddle 31 into the dredging pipe 1, preventing the sludge from being carried away by the water flow after being turned up by the stirring paddle 31, thus improving the dredging efficiency of the port channel dredging and clearing device.
[0029] In this embodiment, the flow guide shroud 5 is provided with a plurality of second through holes 51 spaced apart, and the sludge removal pipe 1 is provided with second mounting holes 15 aligned one-to-one with the second through holes 51. When the flow guide shroud 5 is installed on the sludge removal pipe 1, the second through holes 51 are aligned one-to-one with the second mounting holes 15, and screws are used to pass through the second through holes 51 and engage with the second mounting holes 15 to fix the flow guide shroud 5, so that the position of the flow guide shroud 5 on the sludge removal pipe 1 remains stable, and it is convenient to remove the flow guide shroud 5 for inspection and maintenance.
[0030] Please refer to Figure 3 The first rotating shaft 2 has a threaded section 24 at its end. The first cutter 22 includes a first mounting cylinder 25, and the first mounting cylinder 25 has a first threaded hole that mates with the threaded section 24. The first cutter 22 is mounted to the first rotating shaft 2 through the engagement of the first threaded hole on the first mounting cylinder 25 with the threaded section 24 on the first rotating shaft 2. This ensures reliable engagement between the first cutter 22 and the first rotating shaft 2, while also allowing the first cutter 22 to rotate smoothly under the drive of the first rotating shaft 2, preventing the first cutter 22 from detaching from the first rotating shaft 2 during operation of the port channel dredging and clearing device.
[0031] like Figure 2 and Figure 3As shown, the end of the second rotating shaft 3 is provided with a threaded rod 33. The second cutter 32 includes a second mounting cylinder 34, and the second mounting cylinder 34 is provided with a third through hole for the threaded rod 33 to pass through. The stirring paddle 31 has a mounting post 35, and the mounting post 35 is provided with a second threaded hole that mates with the threaded rod 33, pressing the second mounting cylinder 34 onto the second rotating shaft 3. When the threaded rod 33 is provided on the second rotating shaft 3, and the second cutter 32 and the stirring paddle 31 are installed on the second rotating shaft 3, the threaded rod 33 is first passed through the third through hole on the second mounting cylinder 34, and then the mounting post 35 is rotated so that the upper second threaded hole mates with the threaded rod 33 until the mounting post 35 presses the second mounting cylinder 34 onto the second rotating shaft 3. Matching keys and keyways are provided on the second rotating shaft 3 and the second mounting cylinder 34 to prevent the second mounting cylinder 34 from rotating relative to the second rotating shaft 3, so as to ensure that the second cutter 32 and the stirring paddle 31 rotate smoothly and synchronously when the second rotating shaft 3 rotates.
[0032] Specifically, the end of the mounting column 35 away from the second rotating shaft 3 has a tapered portion 36. The tapered portion 36 provided at the end of the mounting column 35 is used to insert the stirring paddle 31 into the silt when the port channel dredging and cleaning device is used to suck up silt, so as to keep the position of the port channel dredging and cleaning device on the silt stable and prevent the dredging pipe 1 from tipping over and affecting the dredging and cleaning operation.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A device for dredging and clearing a port channel, comprising a dredging pipe, characterized in that: The dredging pipe is equipped with a rotatable first rotating shaft and a first motor that is driven by the first rotating shaft. The first rotating shaft is equipped with a spiral blade and a first cutter at one end of the first rotating shaft. The first cutter is located near the opening of the dredging pipe. A rotatable second rotating shaft is fitted inside the first rotating shaft. The dredging pipe is equipped with a second motor that is driven by the second rotating shaft. The direction in which the second motor drives the second rotating shaft to rotate is opposite to the direction in which the first motor drives the first rotating shaft to rotate. One end of the second rotating shaft extends out of the dredging pipe and a stirring paddle is provided at the end of the second rotating shaft that extends out of the dredging pipe. A second cutter is also fitted on the second rotating shaft. The second cutter is located on the side of the first cutter away from the spiral blade.
2. The device for dredging and clearing the channel of the port according to claim 1, characterized in that: The first motor has a first gear at its output end, and a second gear is fitted on the first rotating shaft and meshes with the first gear.
3. The port and waterway dredging and clearing device as described in claim 1, characterized in that: The dredging pipe is also equipped with a mesh cover, which covers the opening of the dredging pipe and has a through hole for the first rotating shaft to pass through. The spiral blade is located in the space enclosed by the dredging pipe and the mesh cover. The first cutter, the second cutter and the stirring paddle are located on the side of the mesh cover away from the spiral blade.
4. The device for dredging and clearing the channel of a port according to claim 3, characterized in that: The mesh cover is provided with a plurality of first through holes spaced apart, and the dredging pipe is provided with first mounting holes that are aligned one by one with the first through holes.
5. The device for dredging and clearing the port channel according to claim 1, characterized in that: The dredging pipe is also equipped with a flow guide, which is funnel-shaped and located at the opening of the dredging pipe and surrounds the stirring paddle.
6. A device for dredging and clearing waterways in a port according to claim 5, characterized in that: The flow guide cover is provided with a plurality of second through holes spaced apart, and the sludge removal pipe is provided with second mounting holes that are aligned one-to-one with the second through holes.
7. A device for dredging and clearing waterways in a port according to claim 1, characterized in that: The end of the first rotating shaft has a threaded section, and the first cutter includes a first mounting cylinder and the first mounting cylinder is provided with a first threaded hole that mates with the threaded section.
8. The device for dredging and clearing of waterways of ports of claim 1, characterized in that: The end of the second rotating shaft is provided with a threaded rod, the second cutter includes a second mounting cylinder and the second mounting cylinder is provided with a third through hole for the threaded rod to pass through, the stirring paddle has a mounting post and the mounting post is provided with a second threaded hole that cooperates with the threaded rod and presses the second mounting cylinder onto the second rotating shaft.
9. A device for dredging and clearing waterways in a port according to claim 8, characterized in that: The end of the mounting post away from the second rotating axis has a tapered portion.