Portable sand dredger is a compact and mobile machine used to excavate and transport sand, sediment, or slurry from rivers, lakes, reservoirs, ponds, or coastal areas. It is designed for small to medium-scale dredging operations and is ideal for projects that require easy transportation, quick deployment, and efficient material removal.
1. Suction Head or Cutter:
The dredger uses a cutter head or suction nozzle to break up and loosen compacted sand or sediment.
The material is mixed with water to create a sand slurry.
2. Pump and Pipeline System:
The slurry is pumped through a dredge pump into a discharge pipeline.
The pipeline transports the sand mixture to a deposition site or processing area.
3. Mobility and Control:
The portable dredger is equipped with propulsion systems or winches for navigation.
GPS and sonar systems ensure precise dredging operations.
1. Dredging Capacity and Depth
Dredging depth: Typically ranges from 1 to 15 meters (3 to 50 feet).
Production capacity:
Small dredgers: 100 – 500 m³/h.
Medium dredgers: 500 – 2,000 m³/h.
Discharge distance: Up to 1,000 meters or more, depending on pump power and pipe configuration.
2. Dredge Pump Power
Power range: From 30 kW to 500 kW, depending on the dredger size.
Flow rate: Capable of pumping sand, gravel, and slurry efficiently.
Material size: Supports particle sizes up to 100mm.
3. Hull and Construction
Hull type:
Steel pontoons: For durability and buoyancy.
Modular construction: For easy transportation and assembly.
Dimensions:
Length: 6 – 30 meters (20 – 100 feet).
Width: 2 – 6 meters (6 – 20 feet).
Draft: Shallow draft design for operations in shallow waters.
4. Power Source and Propulsion
Engine type:
Diesel engines: Common for portable dredgers.
Electric motors: For eco-friendly and low-noise operations.
Propulsion systems:
Self-propelled dredgers with propeller systems.
Non-self-propelled with towing capabilities.
5. Control and Navigation Systems
GPS positioning: Ensures precise dredging location.
Depth monitoring sensors: Measures dredging depth in real-time.
Automatic control system: For easy operation and efficiency.
