OCEAN Pump hydraulic dredging pumps are known for their superior performance in dredging operations, and they excel in the most challenging operating environments and demanding applications. These pumps not only provide high durability, but also demonstrate indispensable capabilities in industrial and mining environments, especially in custom projects. By adjusting the speed of pumping the mixture, hydraulic pumps can efficiently cover a wide range of working areas, and submersible pumps equipped with agitators are the industry benchmark, providing the best solution for handling abrasive and sediment mixtures. This article aims to explore what is a hydraulic dredging pump, as well as the characteristics and types of hydraulic dredging pumps.
This article mainly includes the following contents:
- What is a hydraulic dredging pump?
- What are the types of hydraulic dredging pumps?
- The working principle and drive method of hydraulic dredging pumps?
- What are the disadvantages of hydraulic dredging pumps?
- What are the characteristics of hydraulic dredging pumps?
- Failure and maintenance methods of hydraulic dredging pumps?
- Summary
1. What is a hydraulic dredging pump?
Hydraulic dredging pumps use water power to remove sediment, silt or debris from water bodies. It involves the use of specialized equipment such as dredgers and pumps to remove, transport and process materials from underwater environments.
2. What types of hydraulic dredging pumps are there?
2.1 Differentiated by appearance hydraulic dredging pump:
Hydraulic dredging pumps are commonly available in two types: double-agitator type and cage type. Among them, double-agitator hydraulic dredging pumps are the most common. The hydraulic data pump pump comes with two side cutters for loading sand, gravel and other abrasives into the hopper of the dredger. The hydraulic motor that powers the hopper and cutting disc drives it. This hydraulic submersible dredging pump can also be used with a screw feeder to transport materials from one place to another.
The device consists of a small box that contains pulleys, rope pulleys, bearings and seals that allow it to rotate freely within the housing without rubbing against any part of the housing wall or other moving parts (such as belts).
2.2 Differentiated by flow parameters:
The OCEAN Pump hydraulic pump series includes cutting-edge models tailored for sludge dredging and pumping, from compact and flexible units to larger and more powerful units. A wide range of models are available to suit specific needs and activities, with flow rates ranging from 75 to 2,000 m³/h and power from 13 to 220 kW.
Small hydraulic pumps: These versatile pumps can be installed on excavators, ensuring maximum adaptability and delivering excellent results at sustainable costs, thanks to their superior performance with agitator support. Power ranges from 13-55 kW.
Medium hydraulic pumps: With a head of up to 78 meters and a pumping capacity range of 75 to 600 m³/h, these pumps can be installed on the DRH series dredgers, with high head and high capacity models also available. Power ranges from 75-220 kW.
Large hydraulic dredging pumps: These high-performance systems are designed for complex and demanding applications, with a head of up to 70 meters, a pumping capacity range of 1,200 to 4,000 m³/h and a power range of 220 kW to 475 kW. However, considering the working period of hydraulic motors, pumps of this specification are relatively rare.
3. How does a hydraulic dredging pump work and how is it driven?
The essence of a hydraulic dredging pump is also a centrifugal pump, so its working principle can refer to the working principle of a centrifugal pump.
When working, the OCEAN pump excavator dredging attachment can be easily fixed to your existing bucket linkage and powered by the excavator’s auxiliary hydraulic system or a separate HPU. By using a cutter head or a high-pressure water jet ring (depending on the dredging application), OCEAN pump technology outperforms all centrifugal pumps in a variety of the most difficult dredging applications. The pump and cutter head suction dredger work together, making it the best dredging system for handling compact materials, high-viscosity materials and pumping large amounts of solids. The excavator pump attachment can easily pump up to 2,700 feet of mud without the need for a booster pump. For larger pump models and pumping distances over 2,000 feet, an HPU (hydraulic power unit) is recommended for optimal productivity. All OCEAN pump suction dredgers and excavator cutter heads are powered by our field-proven industrial mud pumps.
Any excavator operator can be trained to operate this pump in just a few hours.
4. What are the disadvantages of hydraulic dredging pumps?
Seals: Seals can corrode over time. When this happens, water can seep into the motor, rendering it unusable until it is repaired. Also, this seal makes submersible pumps difficult to repair.
Limitations of use: One pump does not fit all purposes. Single-stage pumps are used for most household and light industrial pumps. This includes aquarium filters, sewage pumps, or sump pumps for drainage. Multistage pumps are used for anything underground, such as wells or oil wells. In addition, the pumps can work with thin liquids like water or thick liquids like sewage.
Cooling: The motor of a hydraulic dredging pump must be completely submerged in water. The water surrounding the submersible pump actually helps cool the motor. If used without water, it may cause overheating.
5. What are the features of a hydraulic dredging pump?
5.1 Strongly welded steel plate body and high-quality components.
5.2 Each set of pumps has a main hydraulic cylinder and two side hydraulic cylinders.
5.3 Individual control of each hydraulic cylinder allows precise adjustment of each cutting blade to suit the working conditions.
5.4 The high-efficiency, low-consumption jet pump is driven by a DC motor and gearbox to always maintain maximum efficiency.
6. Failure and maintenance methods of hydraulic dredging pumps?
Some common problems that may occur in hydraulic dredging projects include:
1) Blockage:
If the dredged material contains too many solids or needs to be sized according to the project, the suction hose or other components of the dredger may become blocked. This reduces the efficiency of the dredger and may require frequent maintenance or repairs.
2) Cavitation:
When the suction of the dredger is too low, cavitation occurs, causing bubbles to appear in the mud. These bubbles can burst and create high-pressure areas, which can damage the impeller and other parts of the dredger.
3)Wear:
Hydraulic dredgers are designed to handle abrasive and corrosive materials, but long-term exposure can cause wear on dredger parts. This reduces the efficiency of the dredger and may require frequent maintenance or repairs.
4) Motor failure:
If the hydraulic power supply of the dredger fails, the dredger will stop working. Problems with the hydraulic pump, hose or other components may cause this.
5) Environmental Issues:
Dredging projects can have negative impacts on the environment, such as damaging aquatic habitats or releasing pollutants into the water. Careful planning and mitigation measures can help minimize these impacts.
To minimize these issues, it is important to properly size and maintain the hydraulic dredge and use it within its recommended operating parameters. Regular inspections and maintenance can help detect and resolve potential issues before they become major problems.
7. Summary
OCEAN Pump’s hydraulic dredging pumps are the most durable systems in the industry, using innovative and high-value-added technologies to manage rock, sand, gravel, minerals, and other mixed solid and liquid materials. Not only are these pumps able to seamlessly integrate into powerful remote-controlled dredges or dredges with onboard operating cabins, they are also available in a variety of configurations to meet a variety of dredging and pumping needs. They demonstrate high performance and flexibility in a variety of scenarios such as cleaning mining basins, removing sedimentation pond residues, dredging mining ponds, and maintaining water supply reservoir capacity. Whether handling compact materials, high-viscosity materials, or pumping large amounts of solids, OCEAN pump technology outperforms all centrifugal pumps in a variety of the most difficult dredging applications. The outstanding performance of the excavator pump attachment makes it ideal for pumping slurries up to 2,700 feet without the need for a booster pump, while for larger models and pumping distances over 2,000 feet, the use of an HPU (Hydraulic Power Unit) will achieve the best productivity. Through the synergy of the OCEAN pump suction dredge and excavator cutter head powered by an industrial slurry pump, these systems are not only superior in performance, but also field-proven, providing users with reliable solutions.
