29612039 belt feeder preliminary dimension ing
TRANSCRIPT
DIMENSIONING BELT FEEDER (Version 1.0 - Oct/2008)mario cerda / BE mech / [email protected]
Material bulk density kg/m3 2500
Material
Idler type
Ky Idler flexure factor 0.04fm Internal friction coefficient 0.80
fsm Steel friction coefficient 0.54Angle of repose of material ° 37
Belt type
B Belt width inch
m 1.83Wb Belt Weight kg/m3 35.7 (for preliminary design)B1 Material guide opening m 1.31 OkD Depth of material on the belt m 0.45 OkL Length as show on figure m 7.8
L1 Length as show on figure m 2L2 Length as show on figure m 2.7L3 Length as show on figure m 2.2H Material lift height m 0
Feeder Angle ° 0.0 OkKa Ratio between side & vertical forces 0.25Kx Idler friction factor k/m 4.46Q Capacity (metric ton) T/Hr 1295
Qa Actual capacity (metric ton) T/Hr 1323Qa / Q Capacity ratio 1.02 Ok
VC Volumetric capacity m3/Hr 529.57V Belt speed m/s 0.25
ga
q
m/min 15
Material type
Vmax Maximun recommended speed m/s 0.30V / Vmax Actual speed ratio 0.83 Ok
EFFECTIVE TENSION CALCULATION
Pe Force to move the empty conveyor kg 97
P1 Force to move the material kg 683
Ps Force due to material shear kg 5853
Pfs Force due to friction against skirtboard kg 1031
Ph Force to lift material kg 0
Te Tension effective kg 7665
POWER CALCULATION
N Actual required Power HP 25.5
Nmax Maximun required Power HP 30.7
Nmax / N Power ratio 1.20 Ok
Pe=L∗(Kx+Ky∗Wb+0 .02∗Wb )+45 .4 )
P1=Ky∗(1 .2∗B2∗γa∗L2+B∗D∗L3∗γa )
Ps= (1 .2∗B−D )∗γa∗L1∗fm∗B
Pfs=D∗γa∗Ka∗fsm∗[ (2 .4∗B−D )∗L1+D∗L3 ]+8 .93∗L
Pe=B∗D∗γa∗H
Te=Pe+P1+Ps+Pfs+Ph
N= (Te∗V /4500 )
N= (Te∗V max/ 4500 )
Ps= (1 .2∗B−D )∗γa∗L1∗fm∗B
Pfs=D∗γa∗Ka∗fsm∗[ (2 .4∗B−D )∗L1+D∗L3 ]+8 .93∗L
rad 0.646 material fm fsm idler type1 5 8 1
Abrasive Sand 0.65 Sand 0.33 Flat 0.04Non-abraCoal 0.65 Betumino 0.32 V type 0.05
Coke 0.65 Antracito 0.29 U type 0.05
Fine ore 0.65 Gravel 0.5
Coarse O 0.8 Coke 0.47
Fine, Dry 0.75355 Fine ore 0.55Coarse o 0.75Crushed 0.54Phosphat 0.54
conveyor type Wb1 10
plylon B plylon HDRNHDRN 16 5.2 6.4
20 6.5 8
24 7.7 9.6
30 11.9 13.5
36 14.3 16.242 17.7 2148 20.2 2454 26.8 37.660 29.8 41.8
72 35.7 50.1
84 41.6 58.496 73.2629 65.8179