Abstract
A small scale sugarcane juice extractor using a screw pressing system was designed, constructed and tested. Consideration was given to the techno-economic status of the micro and small scale sugarcane farmers and juice processors who are the intended users of the machine. The functional parts of the machine included grating unit, extraction unit, prime mover, pulley, transmission belts, bearings and frame. The machine was tested with two varieties of sugarcane each at three levels of moisture content and results showed that average grating efficiency and juice yield of 87.8 % and 2.5 % respectively were obtained. Powered by a 3 hp single-phase electric motor, the machine was constructed with materials being available locally at affordable costs. A cottage sugarcane juice extraction plant based on this technology could provide employment and at the same time produce sugarcane juice and bagasse at low costs for sugar and biofuel industries. An improvement in the design, analysis and optimization of the worm shaft and press cage is expected to improve the juice yield and extraction efficiency; hence, this is highly recommended.
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