Rotary Lobe Pumps for centrifuge feeding

Rotary Lobe Pumps for centrifuge feeding

Gravity thickened sludge with a solid content of around 4% has to be to a dewatering centrifuge on waste water treatment plant, Two Accuvon Rotary Lobe Pumps Model AP 200 are used for this duty, These pumps are controlled via a frequency inverter and operate in a duty / stand-by mode to feed the centrifuge. The sludge contains a high percentage of solids, rags & fibres. A Accuvon Multicrusher HAP 200 -Inline was installed ahead of the pumps, to avoid the clogging and blockage of the inlet to the centrifuge as well as to protect the feeding pumps. Solids, rags & fibres, which are present in the sludge will be cut in to fine particles and the sludge will be homogenized. Part of the supply was a auto-reverse control for the Multicrusher, which allows for a clog-free operation.

Application

Type: Gravity thickened sludge

Capacity: 20 - 30 m3/h

Pressure: 2 bar

Solid Content: 4 %

Technical Data:

Rotary Lobe Pump : 2x AP 200

Helical geared motor: 4 kW

Pump speed: approx.180 - 330 1/min

Multicrusher : HAP 200

Parallel shaft gear unit: 4 kW

Pump speed: approx.320 1/min

Advantages :

• Low energy consumption Simplified maintenance
• Reasonable spare parts Screwed rotor allows for low-pulse operation
• MIP-Design with radial casing liners