Introduction
The plain Suction Dredger (CSD) is a highly efficient underwater dredging vessel that uses a rotating cutter head to excavate seabed sediments or rocks and a powerful suction pump to transport the loosened mixture (slurry) through pipelines to designated areas. It is widely used in projects such as channel dredging, port construction, and land reclamation.
|
Main parameters |
Hull size (L*W*H) |
Clean water flow |
Total installed power (KW) |
Dredging depth |
Dredging pump |
Trolley travel |
|
8 inches (single unit) |
16×4.26×1.5m |
>900m³/h |
295 |
6m |
250WN |
- |
|
8/10 inches (dual unit integrated) |
23.6×3. 8×1.5m |
>750m³/h |
384 |
8m |
200WN |
2.5m |
|
10 inches (dual unit) |
29.6×5.28×1.6m |
1200m³/h |
578 |
10m |
250WN |
- |
|
12 inches |
42.8×7.1×2m |
>2000m³/h |
993 |
13m |
300WN |
2.5m |
|
14 inches |
40.5×7.6×2m |
3000m³/h |
1099 |
14m |
350WN |
2.5m |
|
18 inches (Class A navigation area) |
46.72×8.8×2.2m |
3500-4000m³h |
1803 |
14m |
450WN |
2.5m |
|
18 inches (Class B navigation area) |
45.7×8.06×2.2m |
>3500m³/h |
1453 |
14m |
450WN |
2.5m |
|
18 inches (Class B navigation area) |
37.6×8.06×2.2m |
>3500m³/h |
1453 |
14m |
450WN |
- |
|
20 inches (Class A navigation area) |
45.5×8.06×2.2m |
>6000m³/h |
2855 |
14m |
500WN |
2.5m |
|
22 inches |
47.5×8.9×2.7m |
6000-8000m³/h |
3014 |
14m |
550WN |
2.5m |
|
24 inches |
49.5×11.4×3m |
7000-9000m³/h |
4280 |
21m |
Submersible pump:600WN Overwater pump:600WN |
2.5m |
Plain suction dredger Main Structure and Working Principle
(1) Cutter Head: A rotating device with cutting teeth installed at the front of the vessel, designed to break up hard sediments or soft rock on the seabed.
(2) Suction Pipe & Dredge Pump: The cut material mixes with water to form a slurry, which is then sucked through the suction pipe and pumped to the discharge pipeline.
(3) Positioning System: Typically uses anchor cables or spud poles (e.g., "cutter suction" type) to ensure operational precision.
(4) Discharge System: The slurry can be directly pumped to reclamation areas or transported by barges.
The plain Suction Dredger has a working efficiency with an hourly output of up to 800-2000 cubic meters. It can operate stably in water depths of up to 5-26 meters and has a long-distance conveying capacity of 200-4000 meters. Equipped with a hydraulic drive system, it maintains high efficiency under these conditions.
Plain suction dredger Key Features
(1) Continuous High-Efficiency Operation: Integrates cutting, suction, and transportation, making it suitable for large-scale, long-term projects.
(2) Strong Adaptability: Different cutter heads (e.g., toothed, eco-friendly) can be used for various seabed materials (mud, clay, sand, rock, etc.).
(4) Precision Control: Modern CSDs are equipped with GPS and automation systems, achieving high-precision dredging (errors can be controlled within centimeters).
(5) Eco-Friendly Design: Some models include anti-diffusion devices to minimize environmental impact from suspended particles
Typical Applications
(1) Waterway Maintenance: Removing silt to ensure navigable depth.
(2) Land Reclamation Island construction, port expansion .
(3) Mining & Environmental Remediation: Seabed mining tailings cleanup, contaminated sediment treatment.
Comparison with Other Dredgers
(1) Vs. Trailing Suction Hopper Dredger (TSHD): TSHDs use a trailing suction head and have onboard storage, making them more mobile but less effective on hard materials. CSDs are stationary but have stronger excavation capabilities.
(2) Vs. Grab Dredger: Grab dredgers are suitable for localized deep digging or obstacle removal but are less efficient.
Development Trends
(1) Smart Technology: Remote control, automated dredging path optimization.
(2) Green Technology: Low-noise, low-turbidity designs.
(3) Large-Scale Models: Super-large CSDs like China's Tian Kun Hao can achieve dredging capacities of thousands of cubic meters per hour.
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Quality Control
Implement ISO certification, monitor production from materials to finished products, and ensure all equipment meets international standards.
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Professional Testing
Conduct rigorous performance tests with advanced diagnostic equipment to guarantee stable and reliable operation.
-
After-sales Service
Provide technical support, offer one-year warranty,
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Continuous Improvement
Collect customer feedback, analyze performance data, and continuously optimize product quality and functionality.
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