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Progressing Cavity Pumps Arkansas Water Environment Federation 19th Annual Specialty Conference Little Rock, AR November 1 & 2, 2012
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Contents
Design Uses for Progressing Cavity Pumps Pump Protection Maintenance What’s New
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Design
Positive Displacement Pump Displaces a defined volume per stroke, cycle, or revolution General types of positive displacement pumps • Rotary * Progressing Cavity * Gear (Internal/External) * Lobe * Screw * Peristaltic • Recipricating
* Piston * Diaphragm
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Design
Origin • Invented, patented and liscensed by French engineer René Moineau in the 1930s
• Cavities
• Rotor and stator
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Design
BN Movie
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Design
Configurations • Standard flanged
• Open Hopper
• Wobble
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Design
Piggy Back
Inline
Close Coupled
Drive Connections
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Uses for Progressing Cavity Pumps
General Uses • Metering
• Viscous Products
• Abrasive Products
• Shear Sensitive Products
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Uses for Progressing Cavity Pumps
General Uses in Water/Wastewater Treatment Plants • Thin Sludge
• Thickened Sludge
• Dewatered Sludge
• Polymer
• Chemical Feed
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Primary Sludge Transfer
Uses for Progressing Cavity Pumps > Thin Sludge
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Sludge Feed to Dewatering Device
Uses for Progressing Cavity Pumps > Thin Sludge
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Sludge from GBT
Uses for Progressing Cavity Pumps > Thickened Sludge
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Sludge from RDT
Uses for Progressing Cavity Pumps > Thickened Sludge
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Sludge from BFP
Uses for Progressing Cavity Pumps > Dewatered Sludge
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Sludge from Centrifuge
Uses for Progressing Cavity Pumps > Dewatered Sludge
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Polymer to Dewatering Device
Uses for Progressing Cavity Pumps > Polymer
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Ferric Chloride
Uses for Progressing Cavity Pumps > Chemical Feed
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Sodium Hypochlorite
Uses for Progressing Cavity Pumps > Chemical Feed
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Pump Protection
Dry Run Protection • protects pump and stator against damages caused by frictional heat due to lack of liquid pumped
Controller for panel mounting
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Conventional stator and rotor change
Maintenance
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SCT stator and rotor change
Maintenance
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Speed Up – Smart Conveying Technology
Components
Adjusting Segment
for adjusting of the stator clamping and retensioning of the
stator
Smart Stator
consisting of 2 stator halves for quick assembly/dismantling
Smart Rotor
with detachable connection for quick assembly/dismantling
Segment Retainer
for positioning the stator halves and the adjusting segments
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