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 develops 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.
Key Features and Benefits
The Toyo DPFS Slurry Pumps provide:
- 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
- High-temperature and deep-water versions available
Together, these features support demanding high-pressure abrasive slurry applications.
High-Head Hydraulic Performance
The DPFS range provides capacities from approximately 60 to 168 m³/h and discharge heads from approximately 25 to 50 metres.
However, maximum capacity and maximum head occur at different operating points. Therefore, engineers should select each DPFS submersible slurry pump from its individual hydraulic performance curve.
Moreover, the high-head design makes the range suitable for systems with significant elevation differences or long discharge pipelines.
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 DPFS Slurry Pumps create a more uniform slurry mixture before pumping. Moreover, continuous agitation may reduce manual excavation and sump-cleaning requirements.
Nevertheless, the agitator cannot process every solid. Therefore, users should identify particle size, hardness, shape and concentration before selecting 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 provide strong abrasion resistance against sand, minerals and industrial sediment. Moreover, technicians can adjust the appropriate wear plate as internal clearances increase.
Consequently, proper 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 designed to provide substantial torque for heavy slurry transfer.
In addition, a strong, short shaft and heavy-duty bearings support the rotating assembly. Therefore, the pump maintains mechanical stability under changing solids loads.
The surrounding liquid cools the motor during operation. Consequently, users should follow the required submergence conditions for the selected configuration.
Mechanical Seal Protection
Two mechanical seals operate inside an oil bath. Therefore, the oil lubricates and cools the seal faces while helping separate them from abrasive slurry.
Moreover, the short shaft helps control movement around the bearings and seals. As a result, the sealing arrangement supports reliable operation in demanding slurry duties.
Solids Handling and Operating Range
Suitable DPFS configurations can handle slurry containing up to 60% solids by weight. In addition, selected models can pass compatible particles up to 35 mm.
Published operating 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, these limits do not apply simultaneously to every model. Therefore, engineers should confirm the exact pump specification before selection.
High-Temperature and Deep-Water Versions
Standard DPFS pumps operate at depths up to 30 metres. Alternatively, Toyo offers special versions for depths up to 120 metres.
Moreover, selected high-temperature configurations can handle liquids up to approximately 80°C.
However, the motor, cable, seals and pressure-resistant construction must match the required temperature and installation depth.
Toyo DPFS Applications in India
The Toyo DPFS Slurry Pumps may support applications across India such as:
- Mining and mineral processing
- Quarry slurry transfer
- Sand and sediment pumping
- High-head dredging
- 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 should calculate the complete system head before final pump selection.
Selecting the Correct Toyo DPFS Pump
Correct selection depends on:
- Required flow and total head
- Slurry density
- Solids concentration
- Maximum particle size
- Slurry temperature
- pH
- Abrasion level
- Operating depth
- Motor supply
- Discharge pipeline characteristics
Therefore, engineers should select the Toyo DPFS Slurry Pumps from model-specific hydraulic data. Otherwise, an unsuitable configuration may experience rapid wear, insufficient discharge pressure or motor overload.
Product Enquiries in India
The Toyo DPFS Slurry Pumps are presented through Pumps Bharat for mining, quarrying, dredging, construction, tailings handling, deep excavation and other high-head abrasive slurry applications across India.
When submitting an enquiry, please provide the required flow, total head, slurry density, solids concentration, particle size, temperature, pH and operating depth. Consequently, the available DPFS configurations can be evaluated against the application requirements.