Screw Pump
toss pumps
Screw Pump
High Efficiency
Heavy Duty
Adaptability
Less Noise
- Progressing cavity pumps are rotary positive displacement pumps. The main component, a metal rotor, which is in the shape of a single external helix, rotates around its own axis in the direction of rotation (say clockwise); while the axis of the rotor, revolves in the opposite direction (say anticlockwise) around the axis of the stator. The stator is made of an elastomer bonded to an alloy steel tube. The stator itself is in the shape of an internal double helix. The rotor is contained within the stator and forms a continuous seal along the length of the stator. The above movement produces cavities at reduced pressures which moving axially from the inlet to the outlet conveying the fluid at fixed flow rate proportional to the rotational speed.
- The pumping element comprises of a precision machined single external helix metallic rotor, and a double internal helix elastomer stator. Due to the special profile of the rotor and stator set, a sealing line is formed along the axis of the rotor which is maintained at both static and dynamic conditions. As the rotor turns within the stator, these cavities progress from the suction to the discharge end of the pump carrying the fluid.
- The velocity at which the slurry moves through the pumping element influences the wear of the rotor & the stator. Progressive cavity pumps are generally used for pumping mixed phased products & therefore the velocity of the carrier fluid & the particles must be considered individually.
- The fluid velocity is the speed at which the liquid travels through the pumping element. The magnitude of the fluid velocity is a function of the rotor stator geometry spaces. Therefore, the pump rpm should be such
- That the slurry doesn't settle in the discharge pipe.
- That there is no cavitation in the suction housing.
- That the abrasion, erosion of the rotor and stator should be minimal.
- That for abrasive slurries the velocity is 0.5-2 m/s.
- That for normal fluids the velocity is 1-4m/s.
- Co-Axial Shaft Sealing:a) The Mechanical Seal is co-axially tightened between Bearing housing flange and Suction housing flange enabling longer life of the Mechanical Seal. b) The Stuffing Box is co-axially tightened between Bearing housing flange and Suction housing flange enabling longer life of the Gland Packing
- Eccentric Joint: Simple, economic yet Robust design, Triple- Sealed, Heat treated and Hardened Joint gives a life of 15 million cycles (approx).
- Quick & Easy maintenance: The rotating assembly is connected to the drive assembly with a head pin and chuck nut. By removing the head-pin the rotor along with the eccentric joint & shaft head can be removed within five minutes along with the stator. A new set kept as inventory can be fitted to start the pump within no time.
- Compatible Rubber Compounding: to match the individual requirement of the liquid
- Individual Bearing Shaft: Each & every pump has a drive shaft mounted on bearings in order to enhance the life of the drive shaft and the internals.
1. High Volumetric And Mechanical Efficiencies:
- Efficient and economical fluid transfer
- Low power consumption and operating costs
2. Handles All Types Of Media:
- Abrasive slurries
- Fluids with solids in suspension
- Fluids with entrapped gas
- Low and high viscosity (1 to 100,000 cps)
3. High Suction Lift:
- Can pump from vacuum chambers
4. Simple Construction:
- Easy to dismantle and assemble
- No special tools required
- Vulcanized stator simply to be changed
| PARTS | STANDARD MATERIALS |
|---|---|
| WETTABLE CASTINGS | CAST IRON |
| FABRICATED STEEL | |
| 304 STAINLESS STEEL | |
| 316 STAINLESS STEEL | |
| ROTOR | ALLOY STEEL |
| 304 STAINLESS STEEL | |
| 316 STAINLESS STEEL | |
| STATOR | NATURAL RUBBER |
| NITRILE RUBBER | |
| EPDM | |
| INTERNALS | ALLOY STEEL |
| 304 STAINLESS STEEL | |
| 316 STAINLESS STEEL |
| DRIVE ARRANGEMENTS | |
|---|---|
| DIRECT DRIVES | V BELT DRIVE |
| ELECTRIC MOTOR | L TYPE DRIVE |
| GEARED MOTOR | OVER HEAD TYPE ON REQUEST |
| GEARBOX WITH ELECTRIC MOTOR | |
| MECHANICAL SPEED VARIATOR | |
| PETROL/DIESEL ENGINE WITH CLUTCH AND GEARBOX | |
| ANY OTHER UPON REQUEST | |
| MODEL | PUMP RPM |
SIZE | HP | LPH | PRESSURE |
|---|---|---|---|---|---|
| ARP-3201 | 540 | 1.5X1.5 | 1 | 1000 | 6 KG/CM2 |
| ARP-3202 | 540 | 1.5X1.5 | 2 | 1000 | 12 KG/CM2 |
| ARP-3601 | 540 | 2 X 2 | 2 | 2000 | 6 KG/CM2 |
| ARP-3602 | 540 | 2 X 2 | 3 | 2000 | 12 KG/CM2 |
| ARP-4601 | 420 | 2 X 2 | 2 | 3000 | 6 KG/CM2 |
| ARP-4901 | 420 | 2 X 2 | 3 | 3000 | 6 KG/CM2 |
| ARP-4902 | 360 | 2 X 2 | 3 | 2500 | 12 KG/CM2 |
| ARP-3991 | 360 | 2 X 2 | 3 | 5000 | 6 KG/CM2 |
| ARP-3992 | 360 | 2 X 2 | 5 | 5000 | 12 KG/CM2 |
| ARP-5401 | 360 | 2 X 2 | 3 | 7000 | 6 KG/CM2 |
| ARP-6301 | 360 | 2.5X2.5 | 5 | 10000 | 6 KG/CM2 |
| ARP-6302 | 360 | 2.5X2.5 | 7.5 | 10000 | 12 KG/CM2 |
| ARP-5901 | 360 | 2.5X2.5 | 5 | 15000 | 6 KG/CM2 |
| ARP-7301 | 360 | 3 X 3 | 7.5 | 20000 | 6 KG/CM2 |
| ARP-8601 | 360 | 3 X 3 | 10 | 25000 | 6 KG/CM2 |
| ARP-9301 | 360 | 4 X 4 | 15 | 35000 | 6 KG/CM2 |
