DESIGN AND CONSTRUCTION OF PEANUT COATING MACHINE USING LOCALLY SOURCED MATERIALS

Abstract

Coated

peanut exist in the supermarkets in many parts of the world. However, machines for

coating peanuts with additives does not exist in Nigeria. Therefore, a machine for coating peanut

with wheat flour and egg suspension was designed and fabricated for market oriented

production. The procedures employed include the design. Construction, testing and performance

evaluation. The machine components are the rotating drum, frame, shaft, pipe, holder, machine

cover, the speed reduction gear, the electrical motor and the driving and driven pulleys. The

shaft rotates the drum by the transmission system through the shaft system in order to carry out

coating operation. The machine runs on a single form 0.754kw, 1420rmp, electric motor cum

reduction gear system at speed or 30rpm. The rotating drum is mounted on the shaft. Supported

by 2 bearings with the shaft rotation in a stationary position. The rotating shaft is arranged

horizontally on the shaft to be powered by the reduction gear cum electrical motor. The

performances of the coating machine was tested with 2 weight sample of egg suspension

(0.16kg/1.52kg) and wheat flour (0.82kg/1.97kg). 3 level of coating speed (10,20.30rpm) 5 level

of coating time (5,10,15,20 and 25 minutes) arranged in randomized complete design (RCD) of a

2x2x3x5 factorial experience replicate in each and comparise between treatments mean were

done by least significant difference (LSD) at P < 0.05. The result shows that the highest effective

coating capacity was 2.47kg/minuets with the coating speed of 10rpm. The coating machine is

recommended for small and medium producers in order to enhance their production output.