Product Description
Toyo DPH Hydraulic Slurry Pumps
The Toyo DPH Hydraulic Slurry Pumps provide extra-heavy-duty pumping for dense slurry containing sand, gravel, rock and abrasive sediment. Their wet-end design follows Toyo’s proven DP pump construction. However, a powerful hydraulic piston motor replaces the conventional electric motor.
Therefore, operators can adjust pump speed to match changing flow and pressure requirements. Moreover, contractors can connect a suitable DPH pump directly to the hydraulic system of a compatible excavator.
Hydraulic Piston Motor Design
The hydraulic motor allows operators to vary rotational speed by controlling hydraulic oil flow. Consequently, the DPH hydraulic slurry pump can adapt its capacity and discharge pressure as site conditions change.
For example, the operator may reduce speed while positioning the pump or working in sensitive areas. Alternatively, higher hydraulic input can support demanding solids-transfer duties within the pump’s approved operating range.
Main Features and Benefits
- Hydraulic piston motor
- Adjustable rotational speed
- Excavator hydraulic-system compatibility
- Patented Toyo shaft-mounted agitator
- Closed slurry impeller
- Large open solids passages
- Heavy-duty shaft and bearing arrangement
- High-chrome hydraulic wear components
- Multiple wear-plate arrangement
- Capacity up to 915 m³/h
- Particle handling up to 120 mm
- Alternative metallurgy options
- Standard depths up to 30 m
- Special versions for depths up to 120 m
Together, these features make the Toyo DPH Hydraulic Slurry Pumps suitable for major dredging, mining and excavation projects.
Patented Agitator System
The patented Toyo agitator mounts directly on the pump shaft. During operation, it loosens compacted sand, sediment and deposited solids around the pump inlet.
Consequently, the hydraulic agitator pump creates a pumpable mixture before the impeller draws material into the casing. Moreover, continuous agitation can reduce manual excavation and improve solids recovery from pits, lagoons and waterways.
Heavy-Duty Wet-End Construction
The DPH wet end uses a closed impeller and large open passages. Therefore, compatible solids can travel through the pump with fewer internal restrictions.
In addition, Toyo uses a strong shaft and heavy-duty bearings to support changing slurry loads. As a result, the pump can withstand demanding excavation and dredging cycles.
However, engineers must confirm particle shape and hardness because the maximum physical passage does not guarantee suitability for every solid.
High-Chrome Wear Components
Toyo manufactures the impeller, wear plates and agitator from cast chrome iron containing approximately 24% to 28% chromium.
Consequently, these components resist abrasion from sand, gravel, minerals and rock particles. Moreover, Toyo can manufacture the pump in alternative metallurgies, including stainless steel, for selected corrosive duties.
Nevertheless, the correct metallurgy depends on slurry chemistry, abrasion and operating temperature.
DPH Hydraulic Pump Performance
The DPH range provides pumping capacities up to approximately 915 m³/h. In addition, Toyo positions these pumps for slurry densities of at least 1.40 kg/dm³.
Selected configurations can pass compatible particles measuring up to 120 mm. However, these are maximum capabilities across the product range.
Therefore, users should not apply 915 m³/h, 1.40 kg/dm³ and 120 mm solids to every DPH model. Instead, engineers must use the selected pump’s hydraulic curve and solids-passage data.
Excavator-Mounted Slurry Pumping
When mounted on an excavator arm, the Toyo DPH Hydraulic Slurry Pumps can connect directly to a compatible machine hydraulic generator.
As a result, contractors may avoid installing a separate electrical power supply at the pump location. Moreover, the excavator can position the pump directly over accumulated material.
Consequently, this arrangement suits changing excavation faces, dredging areas and remote worksites. However, the excavator must provide the required hydraulic oil flow, pressure, filtration and cooling.
Slurry and Operating Limits
Published DPH-related limits include:
- Maximum capacity: Up to 915 m³/h
- Slurry density: At least 1.40 kg/dm³
- Maximum particle size: Up to 120 mm
- Standard slurry temperature: Up to 60°C
- Permitted pH range: 4–14
- Standard operating depth: Up to 30 m
- Special operating depth: Up to 120 m
However, the manufacturer specifically assigns the stated 70% solids-by-weight capability to the electric DP and DPE ranges. Therefore, users should confirm the permissible solids concentration directly from the selected DPH model datasheet.
Typical DPH Pump Applications
The Toyo DPH Hydraulic Slurry Pumps may support:
- Excavator-mounted dredging
- River and canal cleaning
- Mining and quarry operations
- Sand and gravel extraction
- Harbour and marine works
- Construction-pit clean-out
- Lagoon and settling-pond cleaning
- Rock and mineral slurry transfer
- Industrial sediment removal
- Tailings and process-residue handling
- Remote solids-pumping projects
- Deep underwater slurry recovery
Moreover, the adjustable hydraulic drive suits worksites with changing operating conditions. Nevertheless, engineers must review the required head, particle characteristics and hydraulic power for every project.
Choosing the Correct DPH Pump
Correct selection depends on flow, total head, slurry density, particle size and excavation method.
In addition, engineers should confirm the excavator’s hydraulic flow, operating pressure, available cooling, return-line arrangement and filtration. Therefore, specialists should select the Toyo DPH Hydraulic Slurry Pumps from model-specific hydraulic and motor data.
Otherwise, unsuitable hydraulic supply may reduce performance, overheat the system or damage the hydraulic motor.
Request UAE Pricing and Technical Support
Contact our pump specialists for technical selection, specifications and UAE pricing.
Please provide the required flow, total head, slurry density, particle size, operating depth and excavator hydraulic specifications. Consequently, our team can recommend the correct Toyo DPH Hydraulic Slurry Pumps configuration.