Groundnut oil expelling machine is an important device for oil recovery from groundnut seed in a roller mill, direct firing of barrel and pressing with an engine driven oil expeller. Expeller use a horizontal rotating metal screw, which feeds oil-bearing seeds into a barrel shaped outer casing with perforated walls according to Maul et al (2011).
How do oil expellers work?
Expeller use a horizontal rotating metal screw, which feeds oil-bearing seeds into a barrel shaped outer casing with perforated walls according to Maul et al (2011). The seeds are continuously fed to the expeller, which grinds, crushes and presses the oil out as it passes through the machine (Khangar and Jaju 2012).
What is groundnut oil expeller?
Groundnut oil expeller has been developed and constructed by some researchers in different sizes, shapes and materials, mostly for industrial uses. Such expellers are expensive, involve high level technology which cannot be afforded by small scale and low income oil millers.
How to improve the performance of the oil extraction machine?
Also the incorporation of sensors in the feed screw in other to avoid the over loading of the machine should be duly considered. As a result of the observation made during the test run, we also recommend that in subsequent design, the oil extraction rate and residual oil in cake should be analyzed to improve on the machine effectiveness.