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Design Of Melon De-husking And Separation Machine
CHAPTER ONE -- [Total Page(s) 4]
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The de-husking impeller is housed by the de-husking casing. The casing
is lined with cylindrical chequers. The cylindrical impeller is mounted
very closely to the inside walls of the cylindrical casing leaving a
minimal gap to contain the melon seeds as they flow through this gap
from inlet channel to the exit channel. The casing is covered with a
cover plate. The impeller is connected to the shaft of the electric
motor through an adapter. The blower impeller is housed by the blower
casing. The blower sucks air from outside through the suction channel
and the impeller forces the air through exist channel as required. All
the arrangements of the machine are carried by the structural base.
Bolts and nuts are used to ensure proper mounting of components on the
structural base.
1.3 PRINCIPLES OF OPERATION
The principle used by this machine to achieve the melon de-husking is
attrition and density differential between the cracked shells and the
white seeds is applied to achieve the required separation.
The
electric motor provides the primary motion which rotates the de-husking
impeller. The melons are introduced through the inlet hopper of gravity.
The melons are directed to flow towards the walls of the casing to the
chequers. The rotating impeller then rub the melons on the chequers in
the direction of rotation of the impeller. The melon must be properly
treated with water (moisture) arieated properly before de-husking.
The rubbing action peels the shells of the melons and equally move them
along with the broken shells in the direction of rotation to the exit
channel.
The blower shaft transmits motion from the electric
motor to the blower impeller, thereby delivering certain quantity of air
which is channel to meet the broken shells and white seeds coming out
from the de-husking casing.
The broken shells being lighter than
the white seeds are carried away by the air to a different direction
while the white seeds move into a receiver where they are collected.
CHAPTER ONE -- [Total Page(s) 4]
Page 3 of 4
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