Application: Clean and dredge paint pigment residuals
Dredge Used: EDE 7MAU Series Mud Cat
Dredge
Project Summary: Electric manned automated dredge with 3 Krebs cyclones with a capacity of 2,100 gpm, magnetic flow meter to monitor pump performance, slurry density meter to maintain consistent percent solids by varying traverse speed, and Bottom Sense (automated system to detect and protect pond bottom) to follow the contour of the pond and protect the liner.
Machinery Specifications: Mud Cat DREDGE, 7MAU SERIES MODEL Manned Electric Dredge with On-Board Solids Separation
General:
Length 47′-l0″ (14.58 m)
Width 13′-6″ (4.11 m)
Height 17′-1″ (Top of Overflow) (5.18 m)
Weight 62,000 lbs. (operational) (18,123 Kilos)
Draft. 2′-11″ (.9 m)
Flotation:
Catamaran Type Hull–Two Pontoons-56″ x 48″ x 40′ -0″ made from 1/4″ thick steel plate with Internal Bulkheads and Stiffeners, Polyurethane foam filled.
Cutter:
Auger Type with Shroud
Assembly:
Diameter (HeIix) 18-3/4″
Diameter (Knife Profile) 24-1/4″
Pitch 11″
Flighting 3/8″
Speed Variable to 60 RPM
Cutter Knives Detachable heat-treated blades
Cutter Torque Variable to 17.200 in.-lb.
Working: Cut 13′-6″ wide x l8″ deep (4.11 m)
Capacity: Digging depth-26′ maximum (7.9 m)
Power: 200 HP TEFC Motor – Dredge Pump, Underflow Pump
Service Water Pump and Ancillary Hydraulic Circuits
Pumps:
End Suction Centrifugal with Semi-open Impeller
Dredge Pump ~10″ x 8″ rubber lined with 22″ diameter impeller
Variable speed – 0 to 600 RPM
Design Capacity-2,l00 GPM @. 17 PSIG at cyclone inlet
Underflow Pump 4″ x 3″ rubber lined with 14″ diameter impeller
Variable speed ~ to 1200 RPM
Design Capacity-250 GPM @ 120 ft. head
Service Water Pump 2′ x 2′ self priming
Variable speed-0 to 2700 RPM
Design Capacity-50 GPM @ 120 ft. head
Solids: Three Krebs Model Dl5LB-T123 Cyclones
Separation: Capacity-2,100 GPM (700 GPM per cyclone)
Hydraulic: Slurry pump – Heavy Duty Hydrostatic Drive
All Other Circuits – Pressure-Volume Gear Pump
Systems:
Fixed Displacement Hydraulic Motor(s)
Capacity-7O GPM @ 1750 RPM Motor Speed
Reservoir-75 Gallons
Circuit One-Auger Drive
Circuit Two-Boom Hoist
Circuit Three-Traverse Winch
Circuit Four-Slurry Pump Drive
Relief Pressure Settings:
Slurry Pump Circuit – 4,500 PSI
All other circuits – 2,700 PSI
Propulsion:
Treble Sheave Hydraulic Winch
Traverse Speed – 0 to 100 FPM
Cutting Speed, Nominal – 8 to 12 FPM
Electrical System: Voltage-480V, 3-phase
Two Control Voltage Transformer(s)
120V Power Supply
4V Power Supply
Automation:
Operation Fully Automated with Monitors feeding Program Logic Control
Dredge Pump – 8″ Slurry Flow Meter Monitors Output/Sets Speed
Traverse Winch-8″ Slurry Density Meter sets speed
Underfiow Pump -Level Control sets speed; Flow Meter Monitors Output
Service Water Pump – 4″ Density Meter starts and stops pump
Cyclone Sump–Level Control signals Underflow Pump
Auger Position–Bottom Sense follows bottom contour–Boom up or down
Coating:
Immersed Surfaces – epoxy coating, 15 mils min. thickness
All other surfaces – Polyurethane enamel on a corrosion inhibitive primer, 5 mils min thickness
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