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
[table id=2 /]
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.