Remote-controlled mini dredger

electric

Overview
The Mini Dredging Machine is a compact, remote-controlled dredging unit engineered for efficient removal of sediment and sludge in confined, shallow or hazardous water environments. Its modular flotation platform and submersible high-solids pump enable fast transport, simple assembly and reduced mobilization time.

Working principle
A submersible, high-solids pump is mounted on a compact flotation platform. The unit is operated remotely from shore via cable control, allowing movement and depth adjustment without personnel entering hazardous or confined spaces. The pump and suction head continuously manage slurry and discharge with minimal disturbance to surrounding water.

Core features

• Remote operation for confined-space and hazardous-area dredging
• Compact flotation platform for shallow-draft operation (effective in water from 0.5 m)
• Non-clogging pump technology for high-solids handling (up to ~70% solids by weight)
• Modular design for fast assembly, transport and component replacement
• Low maintenance with easily replaceable wear parts; submersible components rated IP68

Technical advantages
Advanced impeller and shroud design focuses intake at the suction head to reduce turbidity and environmental impact. The pump handles high-solids slurry and is optimized for continuous, heavy-duty operation. The modular concept shortens mobilization and maintenance downtime compared with larger conventional dredging systems.

Applications

• Mining: cleaning tailings ponds and slurry dams
• Power plants: managing ash ponds and cooling water intakes
• Municipalities: clearing silt from stormwater drains, sumps and reservoirs
• Chemical and oil industries: cleaning petrochemical basins and abrasive hydrocarbon sludge

Case study (summary)
Custom-configured units were deployed in oil-processing basins to remove thick, abrasive sludge while operations continued, achieving high daily removal rates and reducing downtime compared with conventional methods.

Parameters

• Dimensions: 1220 × 890 × 520 mm
• Speed: 2.5–4 km/h
• Self weight: 120 kg
• Designed load / payload: 100–300 kg
• Ingress protection: IP68 (submersible components)
• Rated torque: 100–500 N·m
• Track width: 130 mm
• Reducer efficiency: 65–85%
• Gear ratio: 1:10–1:40
• Motor: 2 × 0.75–1.5 kW; rated speed 1500 r/min
• Motor voltage: 380 V AC (customizable to local supply)
• Climbing ability: ≤30° (can climb stairs)
• Maximum span: 620 mm
• Cable control distance: standard 50 m (max 150 m)
• Over-obstacle capacity: 130 mm
• Maximum underwater depth: 30 m
• Power supply: generator or 380 V supply

Technical specifications

• Compact footprint: 1220 × 890 × 520 mm
• Operating speed: 2.5–4 km/h
• Operating weight: 120 kg; payload 100–300 kg
• Drive: dual motors 0.75–1.5 kW each, 1500 r/min
• Gearbox: selectable 1:10–1:40; reducer efficiency 65–85%
• Climbing capability: up to 30°; over-obstacle 130 mm
• Control: cable-controlled (50 m standard, up to 150 m)
• Operational depth: up to 30 m underwater
• Pump capability: non-clogging, high-solids handling (~70% solids by weight)
• Suitable for industrial ponds, reservoirs, tanks and confined water sites