Manual operated oil expeller

An expelling machine for extracting oil from groundnut seeds was designed and fabricated for market oriented production. The procedures employed the design stage, construction and testing. The machine components are: the speed reduction gear, expellant unit, drains collector, driving and driven pulleys, and the hopper. The expelling unit consists of a screw expellant shaft with expellant barrel. The groundnut seeds were pre-heated by roasting before extraction of the oil in it. The machine gave a better performance at the speed of 60 revolutions per minute and improvement in the design can be achieved by incorporation a heating chamber along the expeller barrel.

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