Centrifuge, Industrial Centrifuge, Low Speed Bowl Centrifuges, Bottom Dump Centrifuge, Decanter Centrifuge

The Supramatic Model A460 is a rugged, heavy-duty workhorse machine and is the largest most technically advanced automatic self-cleaning centrifuge of its type available today. The Supramatic Model A460 features a monocoque plate steel frame construction with powder coat finish. Machines with all wetted surfaces constructed from stainless steel are also available. Standard forklift pockets makes lifting the unit onto the machine stand for installation and/or off the machine stand for maintenance an easy and simple process. The top feed bowl design combined with a UHMW abrasion resistant feed impeller distributes and accelerates the incoming feed liquid to the centrifuge-bowl at the same RPM.

The patented "Centri-lock" plow clutch-hub system maximizes the machines' separating efficiency by maintaining a 1:1 ratio between the plow-blade assembly and the bowl assembly, which minimizes internal liquid turbulence and increases separating performance.

The highly dependable ring and pinion gear driven plowing system is coupled to an SEW gearbox. This separately driven plow system provides hi-torque plowing to discharge even the toughest solids cake from the centrifuge-bowl.

The standard Nu-Tride surface treated / hardened plow-blade assembly is manufactured with multiple blades / impellers and an efficiency ring for added spearating efficiency and processing maximum performance. The plow blades are laser-cut from 3/8" thick steel plate. The plow clutch-hub is fastened to the plow shaft using a keyless locking bushing so there are no keys or keyways to fail under tough plowing conditions.

Because all the major rotating assembly components are computer balanced, the Supramatic Model A460 runs smoothly and quiet at full RPM. The centrifuge includes a mounting platform with high quality vibration isolators. A drum or hopper is simply placed under the unit to catch the solids discharged from the centrifuge bowl. The clarified liquid gravity flows back, into the process tank.

Customized machine stands can be designed and constructed to suit customer requirements. A major functional and operational advancement includes 24 volt electrically operated plow gear and sludge chute cover actuators. The electrically operated plow gear and sludge chute cover actuators are much more reliable and consistent than pneumatic actuated systems and completely eliminate the problems and issues associated with dirty and/or wet plant compressed air supplies.

US Centrifuge's Patented Load Sensitive Dump "LSD" control technology, which automatically stops the machine when the unit has reached its maximum solids holding capacity and activates the clean-out cycle as requried. To minimize installation time, and costs, the centrifuge includes a machine-mounted auxiliary wiring box with a pre-wired flexible conduit wiring harness and plug connectors that simply and quickly plug into the control panel. The only wiring required is connecting power to the control panel disconnect.

Download Supramatic Centrifuge A460 Spec Sheet (PDF - 90K)

Download Supramatic Centrifuge A460 Installation Guide (PDF - 188K)

Control Panel Options

To keep machine prices competitive, US Centrifuge Systems offers three levels of centrifuge control panels:

• An economically priced, functionally reliable basic control panel including PLC based functions, simple multiple line operator interface, and VFD drive-motor control all housed in a NEMA 12 enclosure with free-standing leg kit.
• A more expensive technically advanced deluxe control panel including an Allen Bradley Micrologics 1500 PLC, 256 color touch screen operator interface, and VFD drive-motor control unit with resistor braking prepared exclusively for US Centrifuge Systems by Eurotherm. This package is capable of accelerating the centrifuge to full speed in less than 40 seconds and stopping the unit smoothly in less than 60 seconds, which maximized up-time processing by decreasing the clean cycle time. The panel also includes a VFD motor control unit for the plow-motor. The PLC 6.04" operating / display program that features complete operator instructions, help screens, self-diagnostics, and cycle history.
• Completely custom engineered and programmed control panels built to suit specific customer application and/or facility requirements.

How the Supramatic Model A460 Works

The liquid continuously feeds down through the stationary feed pipe and inside the hollow plow-shaft and into the throat of the abrasion resistant UHMW feed impeller, which distributes the liquid into the spinning centrifuge-bowl at an equivalent RPM due to the plow-clutch. The liquid enters the bowl at the bottom of the liquid pool surface and flows upward under increasing centrifugal force as it flows under the efficiency ring. The liquid then moves back toward the center of rotation and exits the bowl-hub discharge holes. As the liquid travels this path, the separated solids deposit on the internal wall of the bowl shell forming a relatively moisture free solids cake, which is intermittently removed during the cleaning process. The liquid exiting the bowl-hub is captured in the upper frame chamber and drains out the discharge fitting. The length of a process cycle is application specific, depending on the flow rate and percent solids in the incoming liquid.

Once the centrifuge-bowl reaches its solids holding capacity, the machine must stop and plow the centrifugally separated and compacted sludge cake from the bowl. When the machine transitions from the process cycle to the clean cycle, it automatically closes the feed stop valve and activates the drive motor VFD resistor braking system, powering the spinning centrifuge-bowl to a complete stop in 45 to 60 seconds.

Once the unit has reached a complete stop, the free liquid drains from the bowl into the lower frame chamber and flows back to the sources. Actuators open the sludge chute cover and engage the ring and pinion plow gears. The plow-motor rotates the plow blades and bowl slowly back and forth in opposite directions as the solids are scraped out and fall through the sludge chute and into a hopper or drum placed below the unit. A typical clean cycle requires 3 to 5 minutes.

Model A460 Machine Specifications

The standard machine features a carbon steel frame and aluminum bowl-shell with carbon steel-bowl and plow assembly. The machine is also available with all wetted surfaces constructed from stainless steel.

Model A460 Machine Advantages

The Supramatic Model A460 automatic self-cleaning centrifuge offers advantages not found on competitve units.

• Rugged monocoque frame construction fabricated from plate steel and powder coated for added durability and longer working life.
• Monocoque frame construction with forklift pockets for added convenience.
• A large 60 liter volume centrifuge bowl for higher capacities.
• The separating power of up to 1,750 x "G" is available by adjusting the VFD frequency to suit the unique demands of each application
• Patented automatic "load sensitive dump" control for added process control and optimum machine performance.
• Patented "Centri-lock" plow clutch for maximum separating efficiency.
• Top feed bowl design with abrasion resistant UHMW feed impeller for less maintenance and maximum separating efficiency.
• Durable hi-torque ring and pinion gear driven plow system to clean out the toughest cakes.
• Plow-blade assembly with multiple blades and efficiency ring for maximum separating efficiency.
• Nu-Tride surface treated plow-blade assembly for added durability.
• Advanced PLC based controls for maximum flexibility with a wide range of adjustable parameters so the machine can be tuned to suit the unique demands of each application.
• A variety of options and system accessories allow a customer to tailor a machine for their specific application and/or facility requirements.
• Competitively priced when all the standard features and processing performance advantages are compared to competing units.
• The A460 is very competitively priced when all the standard features and processing performance advantages are compared to competing units.

Model A460 Machine Uses and Benefits

The Supramatic Model A460 automatic self-cleaning centrifuge is ideal for fluid clarification / liquid recycling applications where other filtration methods fail or are simply too labor intensive. The A460 can handle tough, abrasive, and hard packing cakes with minimal wear and tear on the centrifuge. The machines are effective spearating gelatinous solids that normally blind off most filters. A sample of successful applications include:

• Carbide cutting oils
• Caustic bottle washing
• Filter backwash sludge dewatering
• DAF sludge dewatering
• Gallium Arsenide recovery
• Glass and ceramic grinding coolant clarification
• High capacity parts washing fluids
• Industrial laundry wastewater
• Machining coolant clarification
• Metal grinding coolants
• Quench oils clarification
• Sludge dewatering
• Tank bottom clean-outs
• UF pre-treatment
• Used oil clarification
• Vibratory finishing fluid recycling
• Water wash paint booth sludge recovery
• Wire drawing fluids

The separation of solids from liquid can provide substantial benefits:

• Improved product quality
• EPA liquid discharge and/or solid waste compliance
• Reduced machine and/or production equipment downtime
• Minimizied liquid and/or solid waste volumes
• Drier sludge for disposal
• Extended process liquid life

Like all US Centrifuge Systems equipment, the machines are American made and all engineering, manufacturing, service, and sales activities are located under one roof in Indianapolis for the convenience of our customers.