Product Description
Toyo DPFS Slurry Pumps
The Toyo DPFS Slurry Pumps provide extra-heavy-duty pumping for dense and abrasive slurries that require higher discharge pressure. Their patented shaft-mounted agitator loosens settled material before the closed impeller draws it into the pump.
Therefore, the DPFS range can lift heavy slurry to greater elevations or move it through longer discharge pipelines. Moreover, its slow-running motor develops the torque required for demanding solids-transfer applications.
DPFS High-Head Pump Design
The Toyo DPFS high-head pump combines a closed impeller with carefully positioned wear plates. Consequently, the hydraulic system produces greater discharge head while handling abrasive suspended solids.
In addition, the pump has sufficient weight to remain stable in dense slurry. Therefore, it can maintain secure positioning during demanding submerged operation.
Main Features and Benefits
- Patented shaft-mounted Toyo agitator
- Closed slurry impeller
- High-head hydraulic design
- Extra-heavy-duty construction
- Capacity range of approximately 60–168 m³/h
- Head range of approximately 25–50 m
- Motor range from 15–45 kW
- Discharge sizes from 100–150 mm
- Solids content up to 60% by weight
- Particle handling up to 35 mm
- Low-speed Class F motor
- Strong, short pump shaft
- Heavy-duty bearing arrangement
- Double mechanical seals in an oil bath
- Adjustable high-chrome wear plates
- Special high-temperature and deep-water versions
Together, these features make the Toyo DPFS Slurry Pumps suitable for high-pressure abrasive slurry duties.
High-Head Hydraulic Performance
The official DPFS range provides capacities from approximately 1.0 to 2.8 m³/min, equivalent to 60–168 m³/h. Moreover, the range develops discharge heads from approximately 25 to 50 metres.
However, maximum capacity and maximum head occur at different operating points. Therefore, engineers must select the exact DPFS submersible slurry pump from its individual performance curve.
Patented Toyo Agitator
The agitator mounts directly on the pump shaft. During operation, it loosens settled sand, sediment and process residue around the pump inlet.
Consequently, the Toyo high-head agitator pump creates a more uniform slurry mixture before pumping. Moreover, continuous agitation can reduce manual excavation and sump-cleaning requirements.
Nevertheless, the agitator cannot process every solid. Therefore, users must identify particle hardness, shape and concentration before choosing a model.
High-Chrome Wear Components
Toyo manufactures the impeller, wear plates and agitator from cast chrome iron containing approximately 24% to 28% chromium.
As a result, these components resist abrasive wear from sand, minerals and industrial sediment. Moreover, technicians can adjust the appropriate wear plate as internal clearances increase.
Consequently, correct adjustment helps maintain hydraulic efficiency and may extend wear-part life.
Heavy-Duty Motor and Shaft
The Toyo DPFS Slurry Pumps use a low-speed Class F motor that the surrounding liquid cools during operation. Therefore, the motor must remain submerged according to the manufacturer’s operating requirements.
In addition, the motor provides substantial torque for heavy slurry transfer. A strong, short shaft and carefully selected bearings support the rotating assembly.
As a result, the pump maintains mechanical stability under changing solids loads.
Mechanical Seal Protection
Two mechanical seals operate inside an oil bath. Consequently, the oil lubricates and cools the sealing faces while separating them from abrasive slurry.
Moreover, the short shaft helps control movement near the bearings and seals. Therefore, the sealing system supports dependable operation under severe conditions.
Solids-Handling Capabilities
Suitable DPFS configurations handle slurries containing up to 60% solids by weight. In addition, selected models can pass compatible particles measuring up to 35 mm.
However, these limits do not apply simultaneously to every pump. Therefore, engineers must confirm solids concentration, particle passage and hydraulic performance for the exact Toyo DPFS model.
Standard Operating Limits
Published DPFS limits include:
- Solids concentration: Up to 60% by weight
- Maximum particle size: Up to 35 mm
- Standard slurry temperature: Up to 60°C
- Permitted pH range: 4–14
- Standard operating depth: Up to 30 m
However, slurry characteristics strongly affect wear and performance. Consequently, users should provide accurate density, particle and chemical information during selection.
High-Temperature and Deep-Water Versions
Standard pumps operate at depths up to 30 metres. Alternatively, Toyo offers special DPFS versions for depths up to 120 metres.
Moreover, special high-temperature configurations handle liquids up to approximately 80°C. However, the selected motor, cable, seals and pressure-resistant construction must suit the required depth and temperature.
Typical DPFS Pump Applications
The Toyo DPFS Slurry Pumps may support:
- Mining and mineral processing
- Quarry slurry transfer
- Sand and sediment pumping
- High-head dredging applications
- Construction-pit clean-out
- Deep excavation pumping
- Industrial sump cleaning
- Tailings transfer
- Abrasive sludge pumping
- Settling-basin cleaning
- Process-residue transfer
- Long-distance slurry discharge
Moreover, the high-head hydraulics suit projects with considerable elevation or pipeline resistance. Nevertheless, engineers must calculate the complete system head before selection.
Choosing the Correct Toyo DPFS Pump
Correct selection depends on required flow, total head, slurry density, solids percentage and maximum particle size.
In addition, engineers should confirm slurry temperature, pH, abrasion level, operating depth and motor supply. Therefore, specialists should select the Toyo DPFS Slurry Pumps from model-specific hydraulic data.
Otherwise, an unsuitable pump may experience rapid wear, insufficient discharge pressure or motor overload.
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, solids concentration, particle size, temperature and operating depth. Consequently, our team can recommend the correct Toyo DPFS Slurry Pumps configuration.