Submerged pump for pumping viscous grease sludge / stable pressure
A waste water treatment plant had persistent problems with a
centrifugal pump which was used for pumping grease sludge. The
submerged centrifugal pump pumped the sludge from the grease sludge
basin into a storage shaft from which a second pump fed a digestion
tower with the grease sludge. Higher TS contents caused problems to
the centrifugal pump. The recurring blockages of the pump and the
complex maintenance work resulting from them were the reason why
the operator of the waste water treatment plant looked for an
alternative pump technology.
Following intensive research, the customer decided to purchase a
submerged Accuvon rotary lobe pump. Due to its ability to pump with
stable pressure, the Accuvon rotary lobe pump can convey the
viscous grease sludge from the grease sludge basin into the
digestion tower directly. A storage shaft and a second pump are not
necessary any more.
The customer is very satisfied with the new grease sludge pump.
Since the customer has been using the Accuvon rotary lobe pump
there have not been any failures caused by the pump even with high
TS contents of the pumped medium.
Application data:
| Medium | grease sludge |
| Flow Rate | 5 - 6 m³/h |
| Viscosity | viscous |
| Pump Speed | 180 - 200 rpm |
| Temperature | 20 °C |
| Pressure | 3 - 5 bar |
| pH value | neutral |
Technical data:
| Casing | grey cast iron |
| Casing protection plate | hard metal 1.7225 |
| Static O-rings | NBR |
| Shaft seal | single-acting mechanical seal SISIC/SISIC-NBR |
| Rotors | tri-lobe screw profile, NBR Rubber |
| Drive connection | gear motor as a submersible, 4 KW,EX |
Advantages of this Accuvon AP 80
- Compact, low-on-space design
- Resistant to solids
- Pressure-resistant
- Long service life
- Short-term dry-run capability
- Pumping highly viscous media
- Ease of maintenance
Similar application of chemical:
Accuvon provides many applications on-board ships and in other
areas of the marine industries - from handling of both fresh and
seawaters to fuels of all kinds, oil or oil sludge, bilge or other
water-oil mixtures, fish or fish waste, sewage or other fluids with
or without solids, of low or high viscosities.
Sewage | Ballast Water | Bilge / Loading | Oil Sludge | Fuel /
Crude Oil | Oil-Water Separation | Fish / Kitchen Waste | Mud |
Emulsions | Oilfield Chemicals | Marine Diesel Oil | as Skimmer
Pump
Features of Accuvon Rotary Lobe Pumps:
1.Self-priming, Valve-less, Positive Displacement Pump
2. Easy Maintenance through Front Cover
3. Controllable Flow, Ratio up to 1 : 5
4. Capacity of up to 3200 m³/h
5.Pressures of up to 25 bar
6. Dry-running Capability
7.Reversibility, same pump output for both directions
8. Gentle, Low-Pulsation Pumping
9.For Viscous, Solid, Abrasive or Shea-sensitive Mediums
10. Low Parts Replacement Costs
Components of a Accuvon Rotary Lobe Pump
1 Timing gear
2 Quench and control chamber
3 Casing in block design
4 Unwetted shaft
5 Axial and radial casing protection
6 Shaft seal
7 Rotors
8 Quick-release cover
