Simple Centrifuge
Clean waste vegetable oil (WVO), bio diesel, lube oils, and even hydraulic oil in your garage
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Photo Gallery - This gallery represents the work over several years. Some designs have been replaced and/or updated as time progressed. Most images contain a date stamp visable on the large version. Please note the date when viewing. We are always experimenting with new concepts and designs. If you have any questions about any photo please contact us.
Total photos in gallery 1280 - Latest photo update 2016/07/11 12:37:36
Asterisk(*) indicates new photos in the past 30 days
Adapter 56C to 56J ( 15 )
Algae Recovery ( 42 )
Bacterial fermentation ( 1 )
Balancer Mandrels ( 8 )
Bearing replacement ( 25 )
Botry Culture ( 2 )
Building a gantry ( 16 )
Chestnut Extract ( 9 )
CNC Coolant ( 6 )
Coconut Oil ( 8 )
Construction ( 43 )
Contaminated diesel ( 2 )
Craig's Machine ( 31 )
Cross Drill End Bell ( 10 )
Crude oil ( 5 )
Custom motor shaft ( 23 )
Experimental Motor ( 19 )
Explosion proof motor ( 3 )
Feed Cone ( 29 )
Feed Cone with Fins ( 6 )
Feed Tube ( 3 )
Filter Paper ( 7 )
Ford on WMO ( 2 )
Foundry ( 5 )
Foundry 2 ( 18 )
Gear pump ( 2 )
Grinding fluid ( 19 )
Grinding fluid 2 ( 14 )
Heaters ( 9 )
History ( 11 )
Homemade Diesel ( 7 )
Homemade diesel 2 ( 41 )
Homemade Diesel 3 ( 15 )
Homemade Diesel 4 ( 12 )
How it works ( 3 )
Hydraulic Oil ( 3 )
Keyless Bushing ( 11 )
Lab Centrifuge ( 16 )
Lab Centrifuge 2 ( 18 )
Lapidary Cutting Oil ( 2 )
Lock motor shaft ( 6 )
Magnesol removal ( 6 )
Microwave heater ( 7 )
Misc. Mods ( 4 )
Mitsubishi 4x4 on WMO ( 10 )
New Feed Cone ( 16 )
New Feed Tube ( 7 )
New Rotor 2013 ( 24 )
New rotor design ( 16 )
Oil and Contaminants ( 42 )
Oil Skimmer ( 8 )
Our Shop ( 37 )
Peristaltic Pump ( 29 )
Powder Coating ( 10 )
Renderings ( 8 )
Retrofit rotor for WVOD ( 17 )
Rework Mount ( 10 )
Rotor fins ( 34 )
Rotor Fins One Piece ( 6 )
Seal ( 6 )
Sea Weed ( 4 )
Sediment removal ( 16 )
See thru lid - Building ( 16 )
See thru lid - Testing ( 28 )
Skim Tube ( 56 )
Skim Tube for VCO ( 8 )
Small Settling Tank ( 14 )
Tanks ( 9 )
Tanks - Complete System ( 13 )
Tap drain ( 10 )
Testing Seal Screws ( 6 )
Tests by fuelfarmer ( 22 )
Turn key machine ( 38 )
Two part rotor ( 30 )
Ultrasonic filter cleaning ( 8 )
Updates ( 26 )
Users Machines ( 34 )
Vacuum pickup ( 3 )
VW on WMO ( 7 )
Water-Oil Seperator ( 7 )
Water trap ( 5 )
Wine Clarification ( 4 )
WVO Heat Tests ( 7 )
WVO Pump ( 6 )
WVO Tests ( 14 )
New Feed Cone
I have been thinking about improvements that can be made to the feed cone. After redesigning the retention nut to use a standard 1/2" socket I went to work on the feed cone. The feed cone works fine but I've long wanted to add some vanes to the design to improve the in-feed into the rotor while still minimizing splash. This is the first one of the new design.
Started by facing and boring some 6061 round bar. Next the part was flipped around and machined to shape. Next the part is moved to the mill where it is drilled for the captive nuts and the exit. This is a four tool operation. Two drills, two ez-burrs.
Started by facing and boring some 6061 round bar. Next the part was flipped around and machined to shape. Next the part is moved to the mill where it is drilled for the captive nuts and the exit. This is a four tool operation. Two drills, two ez-burrs.
Next the rotor fins are machined into the base of the feed cone. The fins help force the incoming liquid into the rotor. The fins also help keep the liquid in a uniform motion inside the rotor. Next the captive nuts are installed. The nuts ensure a long life of assembly and dis-assembly as compared to threading directly into the aluminum. The finished feed cone. This extends to just above the nut on the rotor. The oil is flung off the nut and picked up by the vanes where it is forced into the rotor.
Next the rotor fins are machined into the base of the feed cone. The fins help force the incoming liquid into the rotor. The fins also help keep the liquid in a uniform motion inside the rotor. Next the captive nuts are installed. The nuts ensure a long life of assembly and dis-assembly as compared to threading directly into the aluminum. The finished feed cone. This extends to just above the nut on the rotor. The oil is flung off the nut and picked up by the vanes where it is forced into the rotor.
New feed cone in operation. With this feed cone installed even water runs smooth. No vibration on shutdown that is cause by the wave of water. I was able to feed very quickly with no back feeding. The new nut design allow for the feed tube to be extended another inch into the rotor. The liquid drops directly on the nut and is picked up by the vanes. I didn't have any tubes long enough for the new design as the old tubes are an inch too short. I tig welded two tubes together. Later I cleaned up the weld on the lathe and was happy it was very straight.
New feed cone in operation. With this feed cone installed even water runs smooth. No vibration on shutdown that is cause by the wave of water. I was able to feed very quickly with no back feeding. The new nut design allow for the feed tube to be extended another inch into the rotor. The liquid drops directly on the nut and is picked up by the vanes. I didn't have any tubes long enough for the new design as the old tubes are an inch too short. I tig welded two tubes together. Later I cleaned up the weld on the lathe and was happy it was very straight.
Render of the feed cone attached to the flat lid. Complete rotor assembly with the new feed cone. The yellow represents the liquid level during operation. Cut away rendering of the rotor assembly. Yellow represents the liquid level during operation.
Render of the feed cone attached to the flat lid. Complete rotor assembly with the new feed cone. The yellow represents the liquid level during operation. Cut away rendering of the rotor assembly. Yellow represents the liquid level during operation.
We've been using the new feed cone with an older dome top rotor at the farm. We have been very happy with the results. When the machine was stopped it had captured a lot of water and particulate. Mike was very happy. Bottom half of the rotor had a large amount of water. Top half of the rotor. This is the older dome topped rotor which has less holding capacity than the flat top rotor.
We've been using the new feed cone with an older dome top rotor at the farm. We have been very happy with the results. When the machine was stopped it had captured a lot of water and particulate. Mike was very happy. Bottom half of the rotor had a large amount of water. Top half of the rotor. This is the older dome topped rotor which has less holding capacity than the flat top rotor.
The particulate accumulated unequally. We have seen this before with high amounts of water and particulate. Normally we would have cleaned the rotor before allowing it to build up so thick. Machine was running smooth despite the unequal thickness.    
The particulate accumulated unequally. We have seen this before with high amounts of water and particulate. Normally we would have cleaned the rotor before allowing it to build up so thick. Machine was running smooth despite the unequal thickness.    
Numeric Control, LLC
PO Box 916
Morton, WA 98356