Capacity of belt
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7/28/2019 Capacity of belt
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BELT CONVEYORS
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High model
Use these diagrams to estimate
the rough dimensions of the
conveyor.
Example:To transport
300 t/h of gravel with
a volume weight of 1,6 t/m3,
transport distance L=100 m,
lifting height h=30m
250
C
B
A
75 75
Low model
F
400
C -C
F
800
400
200
300
50
E
10
0
100
H
900
B - B
E
max4000
200
max 18 000
B
A
A
B
C-C
BELT CONVEYORS
B
650800
1000
A C E F
9501150
1350
243254
270
780980
1180
8051100
1300
A 620
75A - A
650
C
B
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Figure 1.
Belt speed and width
1 To choose the conveyors width and the belt speed, calculate volumeflow Q
Vas follows:
2 Calculate lifting angle
3 Calculate belt width B and speed V from Figure 1.
4 Calculate power requirement of conveyor P. This is the sum of powerrequirement caused by the transport distance P1, Figure 2, andpower requirement caused by the lifting height P2, Figure 3.
P =P1 +P2 =7,5 kW +27 kW =34,5 kW
Choose 37 kW for power output of motor.
Kamet bel t conveyors are based ontwo frame types:
- Low model, cold-rolled U profile 250 x 75,largest support interval 6 m.
- High model, cold-rolled Z profile 650 x 80,largest support interval 20 m. Larger supportintervals also possible.
Arched and service elements are suitable forboth types.
Choose B =650 mmV =1,5 m/s
Q v = m3/h =187,5 m3/n3001,6
=sin-1( ) =sin-1( ) =17,5hL
30100
28
26
24
22
20
18
16
14
12
10
8
6
4
2
B
650
800
1000
Belt speed v, m/s
0.7 1.0 1.3 1.6 2.0 2.3 2.6
0.4 0.6 0.8 1.01.25 1.5 1.7 1.9 2.1 2.3 2.5 2.7
0.4 0.5 0.7 0.9 1.0 1.1 1.2 1.3 1.4 1.55 1.7 1.8 1.9 2.02.152.32.45
Beltlifting
angle
200
100
m3/h
50
300
400
500m3/h
600
700
800
900
200150
10080
605040
30
20
108
6
54
3
2
1
1 2 3 4 5 6 7 8 10 20 30 40 60 80 100
Figure 3.
Additional motor power caused by lifting Kw
2000
t/h
1500
1000
500
400
300
200
100
50
25
Figure 2.Horizontal conveyor motor power.
10 20 30 40 50 100 200 300 400 500
200
160
120100
80
60
40
30
20
10
8
6
5
4
2000
t/h
1500
1000
500
400
300
200
100
50
max4000
n x max 20 000 max 18 000
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12
20
15
13
23
35
washed gravel
fertilizer pellets
sugar beet
iron pellets
crushed rock
finely grained fertilizer
rye, wheat
potatoes
salt
crushed gravel
coke, coal
paper and plastic bags
wood chips
dry, coarse sand
sulphur
jute bags
moist sand, concrete
25
30
35
45
STANDARD VALUES FOR
ANGLES OF INCLINATION UP TOFB 18 FB 28
E s c o r t U - b e l t s f o r i n c l i n a t io n a n g l e s o v e r 1 8 d e g r e e s
P.O. Box 40, FIN-85101 Kalajoki, FINLANDTel. +358-8-463 9500, Fax +358-8-463 9501
E-mail: [email protected]
