Want to Use a Bucket Elevator but not sure which size? We will Help you out here!

Capacity of Bucket Elevator mainly depends on the following factors

Bucket Volume

Bucket Spacing

Belt Speed

Bulk Density of the Product

Filling Factor of the Bucket

Formula for Calculating Capacity of Bucket Elevator

Capacity in kg/hr = (L x Nx S x ρ x F )/ 3600

L = Bucket Volume in Liters

N = Number of Buckets per meter

S = Belt speed in m/s

ρ = Density of product in Ton/m3

F = Filling Factor is without unit

3600 is seconds per hour

Example:

You need a Bucket Elevator for 12 Tons per Hour for Sand.

You have the Following Data

Capacity in Kg/hr = 12000

N = Number of Buckets per meter = 3 (assumed)

S = Belt speed in m/s = 0.8 m/s – standard speed

ρ = Density of product in Ton/m3 = 1.6 Ton/m3

F = Filling Factor is without unit = 0.6 (assumed)

3600 is seconds per hour

L = Bucket Volume = Unknown

Lets put the data in the formula

12000 = L x 3 x 0.8 x 1.6 x 0.6/ 3600

Therefore, 12000 = L x 0.00064

Therefore , L = 12000 x 0.00064

Therefore, L = 7.68 Ltrs

It Implies that if you use a bucket of 7.68 Ltrs then your Bucket Elevator will give a capacity of 12000 kg/hr

How to select the Bucket

Refer the Table Below

Sr.No.

Length (A)
mm

Width (B)
mm

Projection (D)
mm

Water Capacity (Net)
(Ltrs)

Water Capacity (Gross)
(Ltrs)

1

62.5

68.75

57.5

0.12

0.2

2

75

87.5

75

0.17

0.27

3

87.5

87.5

75

0.22

0.35

4

100

93.75

75

0.23

0.4

5

100

103

87.5

0.25

0.45

6

112.5

100

90

0.32

0.52

7

125

100

87.5

0.36

0.58

8

125

118.75

100

0.5

0.75

9

137.5

112.5

96.8

0.55

0.85

10

150

100

87.5

0.45

0.7

11

150

118.75

100

0.6

0.92

12

175

100

87.5

0.48

0.8

13

175

118.75

112.5

0.7

1.0

14

200

100

87.5

0.65

1.0

15

200

112.5

100

0.8

1.1

16

200

131.25

118.75

1.1

17

225

175

115.6

1

1.7

18

225

125

134.3

1.6

1.6

19

225

175

150

2.3

2.4

20

250

150

134.3

1.9

3.5

21

300

150

134.3

2.2

2.9

22

300

200

168.75

3.0

3.4

23

300

200

187.5

3.4

4.9

24

350

175

156.25

3.2

4.8

25

400

212.5

168.75

4.8

8.5

26

400

212.5

187.5

7

9.7

27

450

218.75

200

9

13.0

28

We need a Bucket of 7.6 Ltrs.

In the Gross Volume Column we have to look for a bucket of 7.6 Ltrs.

We can see that the Bucket No. 25 of 400 mm Length is of 8.7 Ltrs. This means that we will have to select a bucket of 400 mm length and that will give us a capacity in excess of 12000 kg of Sand.

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