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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).
What is a groundnut oil expeller?
The Groundnut Oil Expeller is a screw type machine, which presses groundnut through a barrel-like cavity. Raw material (groundnut) enters one side of the press and by product (cake) exit the other side. The machine uses friction and continuous pressure from the screw drives to move and compress the groundnut.
How much groundnut can an expeller process?
Expeller are power driven, and are able to process 8 to 300kg of groundnut per hour or even more depending upon the type of expeller used (Khangar and Jaju, 2012). Bigger units which process greater quantities of oil are available for use in larger mills.
Do small scale oil millers need a groundnut oil expeller?
In order to assist the small scale oil millers in the local communities, small scale groundnut oil expellers need to be designed, and constructed with locally sourced materials. The main objective is to design and fabricate of an improved, durable groundnut oil expeller, using local sourced materials.
Are groundnut oil expellers a good investment?
The existing Groundnut Oil Expellers in the market are too big and too expensive for these small medium size businesses to invest on. Other limitations are its maintenances aspect as well as its operations.
What is a small groundnut pressing machine?
The small groundnut pressing machine can be used in specialist applications, where small scale extraction of high value products is required. This screw press is featured of high oil yield and ideal for medium scale oil mill plant and new entrepreneur.