[attachment=15353]
AUTOMATIC EGG SHELL PEELING MACHINE
PROJECT 2D VIEW
PROJECT 3D VIEW
BILL OF MATERIALS
STAINLESS STEEL ROD
PIPE
PULLEY
MOTOR DC SERIES
PUMP
FLAT BELT
WATER TANK
COLLECTION TANK
DESIGN CALCULATION
APP. WEIGHT OF EGG=250g
FORCE ON ROLLER CAGE=30*.25*9.81=73.5N~75N
MAX. SPEED OF MOTOR=600 rpm
DIAMETER OF ROLLER CAGE=30 cm
LENGTH OF ROLLER CAGE=60cm
REQUIRED TORQUE OF MOTOR=75*.3=22.5Nm~25Nm
POWER OF MOTOR=2*pi*25*600/60=1.57kW
VOLUME OF ROLLER CAGE=3*3^(1/2)*(SIDE)^2*LENGTH OF CAGE
=35075cc
CALCULATION FOR BALL BEARING
DIAMETER OF BEARING=8cm
CIRCUMFRENCE OF BEARING=25.23cm
Static load rating C=f*i*Z*D^2
C=.1995N
i=1(no. of rows in ball bearing)
f=13.3(for radial contact ball bearing)
D=diameter of balls=2.5cm
Z=no. of balls=12
PUMP DESIGN
Centrifugal pump is selected for this application, because high velocity of flow & low pressure is required
Required velocity=45m/s
Discharge = 45*(area of cross section of pipe)
= 2.83e-2cu.m/sec
Pressure(kg/sq.cm)=h(m)*S.G/10
h=.4m, S.G=1(for water)
Pressure= 400kg/sq.m=400*9.81=3924N/sq.m
Power rating required= Q*density*g*H
=1.09kW