Working Principle
- Single Screw Pump is a Positive Displacement pump and actual Pumping elements are Rotor and Stator
- The Single helical Rotor rolls eccentrically in a double threaded helix Stator of twice the pitch length
- A series of sealed cavities 180 degree are created that progress from Suction to Discharge
- The opposing cavities fill and empty simultaneously resulting in a pulsation less flow
- The fluid travels axially with relatively low velocity and minimal agitation
- The Stator is made of a resilient elastomeric material and vulcanized to the stator pipe/tube providing a slight radial interference of the tool steel / Stainless steel Rotor in the Stator
- The elastomer Stator adds abrasion resistance beyond that of conventional rotary pumps
- The particle tends to imbed rather than abrade the elastomer Stator and also allowing deformation to partially accommodate the solid particles
- The compression fit of the Rotor and Stator enables the pump to handle gaseous liquids and low viscosity liquids
- The pressure capabilities of the pump are a function of the number of times of the progressive seal lines are repeated
Benefits
- Low maintenance and spare part costs
- Maximum Efficiency
- Easy for Operation and maintenance
- High pumping and metering accuracy
- Handle fluids with abrasive solids
- Low NPSHr
- Self-priming features with dry substance upto 45%
- Simple and economical pump design
- Unique pivot joint design provides strength for rigorous continuous operation
Applications
- Loading
- Unloading
- Transfer
- Polymer Feed
- Dewatering
- Sludge transfer
- Chemical feed
- Centrifuge Charging
- Filter – Press Charging
- Kiln Charging & Drainage
- Metering
- Pit Emptying
| Maximum Performance Data | |
|---|---|
| Capacity | Diff. Pressure |
| upto 2700 lpm | upto 24 bar |
| Operating Parameters | |
| Viscosity | From 1 to 1,00,000 cSt |
| Fluid Temperature | upto 120 C |
| Material of Construction | |
| Casing Options | Cast Iron / Stainless Steel / Fabricated Steel / Fabricated Stainless Steel |
| Rotor Option | Stainless Steel / Tool Steel |
| Stator Options | Nitrile / EPDM / Viton / Hypalon |
| Sealing Options | Gland Packing / Mechanical Seal |
| Construction Features | |
| Stages | one / two |
| Stator Construction | Standard / Equal Walled |
| Mounting Options | Horizontal Foot / Vertical tank / Gear Box |
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