Centrifuge Makes DIY Oil Cleaning Easy

Centrifuge Makes DIY Oil Cleaning Easy FARM SHOP Miscellaneous You can strip water and contaminates from used oil with a Simple Centrifuge from Numeric Control Available as a turnkey operation or as components for building it yourself the direct-drive Simple Centrifuge is safe and easy to maintain and inexpensive to run It can be used to clean waste vegetable oil bio diesel lube oils and hydraulic oils “Our original philosophy was to be as simple as possible However over time the design has become a little more complex ” says Randy Smith Numeric Controls co-founder along with Mike Nielsen “The changes have been driven by customer needs Other changes are a result of us being end users ourselves ” “It works so well that other companies have tried to copy our design ” says Nielsen Smith uses a machine to clean waste oil for heating the machine shop where the components are made Nielsen who manages multiple businesses uses half a dozen machines to recycle waste oil for heating “I have mine set up with gravity feed ” explains Nielsen “Oil comes out of settling towers above into a small 2 1/2-gal heater and then into the machine From there the oil goes into a storage tank then into burners for heat ” Nielsen notes that he can usually pick up waste oil for under 15¢/gal He also gets more heat per gallon Centrifuged oil has 130 000 to 140 000 btu’s per gal versus 70 000 to 90 000 btu’s per gal of propane Heating the oil increases the processing rate to more than 20 gal per hour However the slower the processing rate the finer the particulates removed Nielsen and Smith are confident the centrifuge captures particles down to 1 micron in size “If Mike or his employees aren’t happy with maintenance or operation I hear about it ” says Smith “Personally I don’t like having to take apart machines and clean them so we come up with solutions ” Customer suggestions come in from a wide array of users including those who use recovered oil for heating like Smith and Nielsen do Many customers including most foreign buyers use centrifuged waste oil to fuel their diesel-powered vehicles or generators “We have one customer with about 800 000 miles on a diesel-powered truck who uses waste oil at a 20 to 30 percent mix with diesel fuel in the winter and 40 percent in the summer ” says Nielsen “He tried other centrifuges in the past but they required too much labor ” Reducing labor has been key since developing the first design One of the first improvements was to go from an open to closed bowl design That eliminated splatter and reduced cleanup as did making the unit self-draining Other upgrades have increased G-force and increased the amount of oil subjected to the G-force Recent improvements include a 2-part rotor with a feed cone all of which can be removed intact for bench-top cleaning “What we have now is a machine where the waste oil comes through the top of the rotor down a tube to the bottom and then works its way in with no splashing ” says Nielsen “It’s easier to clean we don’t have to clean it as often and it holds more product It’s a much better design ” The Turnkey Simple Centrifuge with motor starts at $1 500 The 2-part rotor with feed cone is available for $650 and ships with detailed construction and assembly notes for building your own Other components include industrial single and triple phase motors and upgrade rotors to fit earlier turnkey machines Check out a video of the Simple Centrifuge in use at FARMSHOW COM Contact: FARM SHOW Followup Numeric Control LLC P O Box 916 Morton Wash 98356 ph 360 269-1497; www simplecentrifuge com

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