HOW TO SELECT THE RIGHT SIZE OF BUCKET?
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
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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