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Jet Sand Suction Dredgers from Qingzhou Mingxu Supply Chain Co., Ltd. are designed for sand extraction and silt removal in rivers, lakes, ponds, and other shallow water bodies. The equipment operates by using a high-pressure water jet to loosen underwater sediment, after which a sand pump draws the slurry through a pipeline to the shore or to processing units.
A split hull design with shallow draft allows the dredger to work in areas with limited water depth. The suction head and pipeline are constructed from thickened wear-resistant steel to withstand abrasive sand conditions. Hull dimensions, discharge distance, and sand output can be customized according to specific project requirements. Matching sand washing and screening equipment is also available from the company.
The Jet Sand Suction Dredger is designed for shallow water environments, including natural rivers, reservoirs, fish ponds, lake shoals, tailings settling ponds, and small navigable channels. Common tasks include:
1. River gravel and underwater sand extraction.
2. Silt removal in ponds and reservoirs.
3. Dredging of small rural water channels.
4. Sediment separation and recovery in tailings ponds.
After the vessel is anchored, a high-pressure water pump sprays water from the suction head to break up underwater mud and sand into a slurry. The sand pump then creates negative pressure to draw the sand-water mixture through the pipeline. The slurry is discharged to the shore or to a screening machine, allowing continuous sand extraction and material transport.
1. Before work, check the hull, water pumps, pipelines, and control system. Secure the vessel and clear any blockages.
2. Start the high-pressure water system first, then activate the sand pump. Adjust the suction arm depth so it reaches the sediment layer.
3. During operation, move the vessel slowly and adjust water pressure and suction depth based on sand concentration.
4. After work, stop the sand pump and high-pressure water system. Retract the suction arm, flush the pipeline to remove remaining sludge, and disconnect the power supply.
1. Shallow water capability. The shallow draft hull is suitable for small rivers, fish ponds, and shoals where larger dredgers cannot operate.
2. Anti-blocking suction design. The high-pressure water jet disperses sediment before suction, reducing the risk of pipeline blockage and helping maintain steady output.
3. Wear-resistant construction. The suction head and pipeline use thickened wear-resistant steel to extend service life in abrasive sand conditions.
4. Centralized control. The control cabin allows operation with a small crew, reducing labor requirements.
| Item | Adjustable Range / Options |
|---|---|
| Hull Size | Custom length and width based on water area and transport limits |
| Discharge Distance | Configurable pipeline length; longer distances may require booster pumps |
| Sand Output | Depends on pump size and engine power; can be specified at order |
| Supporting Equipment | Sand washing and screening machines can be supplied together |
Output matching: The sand output is determined by the dredge pump's flow rate and the sediment concentration in the slurry. For a target production rate, the pump model and impeller diameter are selected based on the pump's performance curve, with adjustments made for the specific gravity of the material. Actual output depends on site conditions such as sediment density and water depth.
Discharge distance and pipeline design: The required pump head is calculated from the horizontal pipeline length, vertical lift, and friction losses in the pipe. For longer discharge distances, the pipe diameter is increased to reduce resistance, or booster pumps are placed along the line. The pipeline route and support method are also considered to prevent blockages.
Power matching: The engine or electric motor is sized according to the pump shaft power, high-pressure water pump power, and auxiliary loads. A power reserve is maintained to handle variations in slurry density and to avoid overloading during continuous operation. Diesel engines are commonly used for remote sites, while electric motors are available where grid power is stable.
The complete unit is covered for 12 months or 1,000 working hours, whichever comes first. Wear parts and damage resulting from human error are not included. Replacement parts can be supplied, with freight costs and installation labor to be borne by the customer.
Q1: What is the difference between a jet suction sand dredger and a cutter suction dredger?
A1: A jet suction dredger uses high-pressure water jets to loosen sediment, which is suitable for loose sand and silt in shallow water. A cutter suction dredger uses a rotating cutter head and is better for harder or compacted materials, and can work in deeper water.
Q2: Can the dredger be transported in standard containers?
A2: The split hull design allows the main sections to be separated for road or container transport. Disassembly and reassembly instructions are provided, and the exact shipping method can be confirmed based on the destination.
Q3: What kind of maintenance is required during continuous operation?
A3: Regular checks should cover the wear condition of the suction head and pipeline, pump impeller clearance, and hydraulic or electric system connections. Daily flushing of the pipeline after work helps prevent sediment buildup. Spare wear parts such as suction nozzles and pipe bends should be kept on site for long projects.
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West end of Yadong Street, Qingzhou Economic Development Zone, China
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