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A500 Automatic Centrifuge

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Innovations

A500 Automatic Centrifuge

A500 Automatic Centrifuges are designed with innovative, cost-effective features and integrated processing advantages that are not found on competitive units.

A maximized liquid flow path through the centrifuge bowl increases liquid retention time, and the patented Centri-Lock™ plow-clutch and a three-bladed plow assembly with an efficiency ring minimizes liquid turbulence. Increased retention time combined with minimized liquid turbulence creates superior separating efficiency. After the solids material has been separated, a strong gear-driven plowing mechanism will remove even the toughest cake.

Mechanically, A500 Automatic Centrifuges are a hanging design — smooth and very stable. The machine is simple and inexpensive to maintain with an estimated bearing life of 3 to 5 years, and an estimated labor life of 10 years, depending on working conditions. Removal of the rotating assembly can be completed in a matter of minutes. The bowl enclosure can be easily unbolted and removed.

Machine Specifications

A500 Automatic Centrifuge Machine Specifications

Maximum flow rate: 20-gpm
Solids holding capacity: Up to 2 gallons
Maximum sludge discharge: Up to 8 gallons per hour
Maximum g-force: 2,000 x gravity
Liquid inlet fitting: 1″ NPT
Required inlet pressure: 10-psi @ 40 gpm
Maximum temperature: 160° F
Standard pH range: 6 to 9 pH
Liquid discharge fitting: 3″ NPT
Liquid discharge pressure: Gravity return
Noise level: 72 dB (A)

A500 Automatic Centrifuges are economically priced, fully automatic self-cleaning centrifuge systems for liquid-liquid and liquid-solid centrifuge separation, solids dewatering, and centrifuge liquid filtration and fluid clarification. The machine is available in standard carbon steel or optional stainless steel construction. Contact US Centrifuge Systems.

Beyond the Centrifuge

How the A500 Automatic Centrifuge Works

Liquid continuously feeds down through the stationary feed pipe and into the throat of an abrasion resistant feed impeller, which distributes the liquid into the spinning centrifuge bowl at an equivalent rpm due to the plow-clutch. 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 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, pending on the flow rate and the percent of solids in the incoming centrifuge feed 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, halting 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 source. 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 into a hopper or drum placed below the unit.

A highly functional and simple-to-operate PLC control panel is added to the A500 Automatic Centrifuge with operator interface for easy process time adjustments and function messages. The control panel includes a standard 5-HP variable frequency drive to control and adjust the centrifuge motor RPM and ac-cell and de-cell ramps. The control panel comes pre-mounted and integrally wired with the unit.

All models and systems built at US Centrifuge Systems can be modified into a turn-key operation.

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