1. An Overview of Excavator-Mounted Hydraulic Submersible Sediment Pumps

1.1 Core Advantages of TAIAN OCEAN PUMP’s Hydraulic Submersible Sediment Pumps

• High Dredging Efficiency: Optimized impeller and flow channel design enables the pump to handle large volumes of sediment-laden water, significantly reducing project construction periods.
• Superior Durability: Constructed with high-strength, corrosion-resistant alloy materials and reinforced structural design, the pump withstands the abrasive and corrosive conditions of underwater riverbed operations, reducing failure rates.
• Exceptional Versatility: Beyond river dredging, it is also applicable to lake desilting, port dredging, construction site sludge treatment, and mining tailings transportation, with flexible adaptation to different working scenarios.
• Integrated Maneuverability: Directly mounted on excavators, it utilizes the excavator’s 360° rotation and flexible arm movement to adjust the pump’s position and depth at will, eliminating the need for additional fixed support equipment.

2. Pre-Dredging Preparation: Lay the Foundation for Smooth Operations

2.1 Comprehensive On-Site Dredging Assessment

• Identify Sediment Composition: Test and confirm the type of riverbed sediment (e.g., fine silt, sand, gravel mixture, or clay), as well as its moisture content and bulk density. This determines the pump’s operating parameters and suction strategy to prevent blockages caused by mismatched working modes.
• Map the Dredging Area: Use professional survey tools to map the dredging section, marking the depth of the riverbed, the distribution of underwater obstacles (e.g., large rocks, sunken objects, and tree roots), and the range of navigation channels or protected ecological areas to avoid equipment collision and ecological damage during operation.
• Evaluate Hydrological Conditions: Record the river’s water flow velocity, water level fluctuation range, and seasonal hydrological changes, and select the optimal dredging time window to reduce the impact of water flow on pumping efficiency.

2.2 Rigorous Equipment Inspection and Calibration

• Pump Body Component Inspection: Check the impeller, suction inlet, discharge pipe, and sealing ring for wear, deformation, or looseness; replace damaged or aged parts in a timely manner to prevent sediment leakage and reduced suction.
• Hydraulic System Check: Inspect the hydraulic hoses, quick connectors, and valves for cracks, oil leaks, or blockages; ensure the hydraulic oil level is sufficient and the oil quality meets the operating requirements.
• Excavator Power Verification: Confirm that the excavator’s hydraulic pump, oil tank, and control system are functioning normally, and that the output power and pressure match the pump’s rated parameters to avoid insufficient power or equipment overload.
• Supporting Tool Preparation: Prepare professional tools for on-site adjustment, sealing gaskets, a small amount of hydraulic oil, and a high-pressure water gun for post-operation cleaning to handle unexpected faults in a timely manner.

3. Professional Pump Setup: Key Steps for Efficient Suction

3.1 Precise Positioning of the Submersible Pump

• Submersion Depth: Ensure the pump body is completely submerged in water, with the suction inlet 30-50cm below the riverbed sediment surface—avoiding excessive depth (which may cause the suction inlet to be blocked by thick sediment) or insufficient submersion (which may lead to air suction and reduced pumping efficiency).
• Installation Angle: Tilt the pump body at an angle of 15-30° relative to the horizontal plane, with the discharge pipe facing the water surface to ensure smooth flow of sediment-laden water and reduce pipeline resistance.
• Obstacle Avoidance: Keep the pump at least 1 meter away from underwater rocks, sunken objects, and other obstacles to prevent the pump body or hoses from being scratched or squeezed during operation.

3.2 Secure Hydraulic Connection and Parameter Setting

• Tighten Hydraulic Connections: Align the quick connectors of the hydraulic hoses with the pump’s oil inlet and outlet, and lock them firmly to prevent oil leaks caused by loose connections during high-pressure operation.
• Set Hydraulic Power Parameters: Adjust the excavator’s hydraulic pressure and flow rate to the rated values recommended by TAIAN OCEAN PUMP through the control panel; avoid blindly increasing the pressure (which may cause equipment overload) or setting the pressure too low (which may result in insufficient suction).
• Test the Hydraulic Circuit: Conduct a short low-power test run of the hydraulic system to check whether the oil flow is smooth, whether the pump impeller rotates normally, and whether there is abnormal noise or oil leakage—stop the test immediately and troubleshoot if any problems are found.

4. Standardized Pump Operation: Optimize Dredging Efficiency and Ensure Safety

4.1 Correct Start-Up of the Dredging Operation

• Pre-Start Confirmation: Recheck the pump’s positioning, hydraulic connections, and excavator stability; ensure no personnel or obstacles are in the operating range to eliminate safety hazards.
• Gradual Power Increase: Start the excavator’s hydraulic system at low power, allowing the pump impeller to rotate at a low speed for 1-2 minutes to pre-lubricate the internal components; then gradually increase the power to the working state to avoid the suction inlet being blocked by a large amount of sediment in an instant.
• Initial Suction Test: Observe the discharge of sediment-laden water from the discharge pipe; if the flow is small or there is only water without sediment, adjust the pump’s submersion depth or suction inlet position in a timely manner.

4.2 Real-Time Monitoring and Dynamic Operational Adjustment

• Key Performance Monitoring: Keep an eye on the pump’s operating pressure, flow rate, and noise; if the pressure suddenly rises, the flow rate decreases, or abnormal metal friction noise occurs, stop the machine immediately for inspection—this is usually a sign of blockage or component wear.
• Suction Intensity Control: Adjust the hydraulic power output according to the sediment thickness; reduce the suction intensity when dredging fine silt to avoid excessive water mixing and reduced sediment concentration; increase the suction intensity appropriately when handling sand or gravel mixtures to ensure efficient extraction.
• Flexible Position Adjustment: Utilize the excavator’s operating arm to move the pump slowly and evenly along the riverbed; adopt a back-and-forth or spiral dredging method to avoid leaving dead angles; lift the pump slightly and move it to a new position when the sediment in the current area is exhausted.
• Avoid Long-Term Continuous Operation: Take a 10-15 minute break every 2-3 hours of continuous operation to allow the hydraulic system and pump body to cool down, reducing the risk of overheating and component aging.

5. Post-Dredging Operations: Cleaning and Maintenance to Extend Equipment Life

5.1 Thorough Cleaning of the Pump and Supporting Components

• High-Pressure Water Rinse: Use a high-pressure water gun to rinse the pump’s suction inlet, impeller, flow channel, and discharge pipe from the inside out, removing all residual sediment and debris; pay special attention to cleaning the sealing parts to prevent sediment from causing sealing failure.
• Hydraulic Hose Cleaning: Wipe the surface of the hydraulic hoses and connectors with a clean cloth to remove mud and water stains; blow the inner cavity of the connectors with compressed air to avoid blockage by fine sediment.
• Dewatering and Drying: Lift the pump out of the water and place it in a well-ventilated and dry area to air-dry the internal and external parts of the pump body; drain the residual water in the pipeline to prevent freezing and cracking in low-temperature environments.

5.2 Standardized Post-Operation Inspection and Routine Maintenance

• Post-Operation Damage Inspection: Check the pump body, impeller, and pipeline for wear, deformation, or cracks; inspect the sealing ring and hydraulic connectors for aging or damage; record the wear status of key components and formulate a replacement plan.
• Lubrication of Moving Parts: Apply high-quality lubricating grease to the pump’s bearing seats, rotating shafts, and other moving parts to reduce friction and wear during the next operation; ensure the lubricating grease fully covers the friction surfaces without excessive application.
• Hydraulic System Maintenance: Check the hydraulic oil quality and oil level; if the oil is mixed with water or sediment, replace the hydraulic oil in a timely manner; clean the hydraulic oil filter to ensure the smooth flow of the hydraulic circuit.
• This equipment is specially designed for 40-ton excavators with dual-pump confluence, featuring a dual-agitation hydraulic sediment pump as its core configuration. The overall design is tailored to the operational needs of 40-ton excavators, balancing conveying efficiency and agitation performance. The specific parameters and configurations are as follows:

  1. Core Pump Parameters

  • Outlet Diameter: 10 inches (suitable for high-flow conveying needs, improving sediment conveying efficiency)
  • Clear Water Flow Rate: 600 m³/h (clear water conveying capacity under rated working conditions, ensuring efficient operation)
  • Head: 35 meters (meeting medium-to-long distance and medium-height sediment conveying scenarios)
  • Power: 120 kW (strong power output, matching the operation needs of dual-pump confluence and agitation system)

  PC300 Excavator-Specific Dual-Agitation Hydraulic Sediment Pump Parameter Configuration

  This equipment is specially designed for PC300 excavators, featuring a dual-agitation hydraulic sediment pump as its core configuration. The overall design is tailored to the operational needs of PC300 excavators, balancing conveying efficiency and agitation performance. The specific parameters and configurations are as follows:

  1. Core Pump Parameters

  • Outlet Diameter: 8 inches (suitable for medium-flow conveying needs, ensuring stable sediment conveying)
  • Clear Water Flow Rate: 500 m³/h (clear water conveying capacity under rated working conditions, meeting daily operation requirements)
  • Head: 20 meters (suitable for short-to-medium distance and low-height sediment conveying scenarios)
  • Power: 75 kW (stable power output, matching the operation needs of the dual-agitation system)
  • Impeller Flow Channel: 7.5 cm (optimized flow channel design, reducing sediment blockage and improving conveying efficiency)

  2. Hydraulic Motor Configuration

  2.1 Plunger Fixed-Displacement Motor (for Pump Drive)

  • Displacement: 160
  • Oil Supply: 160

  2.2 Internal Five-Star Motors (for Dual-Side Hydraulic Agitators)

  • Displacement: 600
  • Oil Supply: 50

  3. Other Key Configurations

  • Total Oil Supply: 210
  • Hydraulic Valve Configuration: Constant Pressure Multi-Way Valve (ensuring stable hydraulic system operation and precise control)
  • Agitator System: Dual-Side Hydraulic Agitators (effectively stirring sediment, preventing sediment deposition and pump blockage)Storage of Idle Equipment: If the pump is not used for a long time, coat the pump body and metal components with anti-rust oil; store the hydraulic hoses in a cool and dry place to avoid direct sunlight and aging; place the pump on a dedicated support frame to prevent deformation of the pump body.