Jet Suction Dredger (also known as Jet Suction Sand Dredger) is a high-efficiency hydraulic dredging equipment relying on the synergy of high-pressure water flow and vacuum suction. It realizes the extraction and transportation of underwater sediments such as sand and mud through the integrated operation mode of “jetting-suction-conveying”, and is widely suitable for multi-scenario underwater dredging needs such as river regulation, port maintenance and reservoir desilting. With the advantages of no mechanical disturbance, high operation efficiency and wide adaptability, it has become one of the mainstream equipment for water area engineering dredging, and can effectively complete the desilting and dredging operation of medium and deep water areas and complex sediment which are difficult for conventional equipment to handle.
Core Parameter Specification
| Model Type |
Length × Width × Height (m) |
Dredging Depth Range (m) |
Dredging Efficiency (m³/h) |
Total Power (kW) |
Conveying Distance (m) |
Adapted Pipe Diameter (mm) |
| Small (PSD Series) |
4.5×2.0×0.7-6.8×2.0×1.0 |
6-20 |
25-110 |
22-100 |
50-200 |
100-250 |
| Medium |
8.0×2.2×1.5-11.8×2.2×1.5 |
15-20 |
130-390 |
100-500 |
1000-1500 |
250-400 |
| Large (14-inch Customized) |
16.0×4.2×1.5 |
~25 |
~375 |
897 |
Up to 1000 |
400 |
Large customized jet suction dredgers can be upgraded according to engineering requirements. The main pump power of some high-end models can reach up to 1750kW, and the maximum conveying distance exceeds 2000 meters, which can meet the high-intensity operation requirements of large-scale dredging projects such as port waterways and deep-sea reclamation.
Product Advantages & Technical Highlights
- Hydraulic Operation, Environmental Protection & Low Disturbance: The core adopts high-pressure water jet impact for soil breaking, without hard parts such as mechanical cutters and buckets touching the river bed, reducing physical disturbance to the underwater terrain. The operation process is low noise and dust-free, the mud conveying is highly sealed, suitable for dredging in ecologically sensitive water areas such as urban inland rivers and wetlands.
- High Efficiency Sludge Suction, Controllable Concentration: The linkage of high-pressure jet and vacuum suction can fully stir the underwater sediments to form high-concentration mud, with the sand suction concentration up to 60%, 20% higher than that of traditional cutter suction equipment. It can dynamically adjust the mud concentration (10%-35%), balancing operation efficiency and conveying stability.
- Wear Resistant & Durable, Longer Service Life: Easy-wear parts such as sand suction pipes, pump bodies and impellers are made of high-chromium alloy cast iron with a hardness of HRC58-62, and the service life is 3 times longer than that of ordinary steel. The impeller of the core pump body can withstand the passing of 300,000 cubic meters of solid materials without obvious wear during continuous operation.
- Modular Design, Flexible Adaptation: The equipment is disassembled into three core modules: power, sand suction and conveying, which can be freely combined according to the project scale. The single-pump single-pipe design of small models reduces the cost by 35%, and the double-pump parallel connection of large models achieves a breakthrough in processing capacity. It also supports customized modification to adapt to different sediment and dredging depth requirements.
- Intelligent Control, Convenient Operation & Maintenance: Integrating pressure sensors, flow monitoring devices and intelligent monitoring platform, it collects real-time operation data such as pumping pressure and mud discharge concentration. When the sand suction pipe is blocked, it can automatically backwash and resume operation in 30 seconds, and also support remote fault diagnosis and parameter optimization, greatly reducing the cost of manual operation and maintenance.
- Power Optimization, Energy Saving & High Efficiency: Adopting diesel/electric dual-power configuration (hybrid available for some models), the main pump power can be automatically adjusted according to the operation depth. The energy consumption is reduced by 22% compared with single-power equipment during 30-meter deep water operation. The double diesel engine parallel drive of large models increases the power by 60%, which can cope with the operation of high-hardness sand layers.
Applicable Scenarios & Materials
Applicable Scenarios
The jet suction dredger has a dredging depth of 1-30 meters, suitable for various dredging projects in still water and slow-flow water areas. The core application scenarios include: inland river desilting, port waterway maintenance, reservoir sediment control, coastal beach dredging, sea reclamation engineering, urban lake ecological restoration, mountain small reservoir desilting and cross-border deep water river dredging, etc. Small models can enter narrow rural rivers, and large models can meet the large-scale operation needs of deep-sea ports.
Applicable Materials
Relying on the crushing capacity of high-pressure jet and the adaptability of vacuum suction, it can handle most underwater loose and soft sediments. The core applicable materials include: river sludge, reservoir pond bottom sludge, sandy sediment, silty clay, fine sand, medium sand, sand-stone mixed sediment. Some composite models can handle sediment containing a small amount of loose gravel and small stones (diameter ≤30cm), adapting to multi-impurity underwater working conditions.
