The energy-saving Biobull® fermenter agitator
Technical specifications
| Type | Power rating | Current rating | Nominal speed | Circulating rate *) | Thrust force |
|---|---|---|---|---|---|
| [kW] | [A] | [U/min] | [m³/h] | [N] | |
| BIOE 114G | 11 | 21,5 | 38 | ca. 22.600 | ca. 7.000 |
*) Circulating rate calculated for water, for comparison purposes
Motor 400+/-10% VAC, rated frequency 50 Hz, index of protection IP 54
Dimensions and weights
| Propeller diameter | 2650 mm or 1500 mm |
| Required wall opening | Chamber lining 600 x 600 mm or core hole 450 mm |
| Required cover opening for lifting out the agitator shaft |
2200 x 650 mm |
| Overall weight | approx. 1100 – 1500 kg depending on version |
The height of the bottom-bearing bracket and the length of the agitator shaft are determined by the tank dimensions.
Materials
| Parts flushed with gas in the fermenter | Stainless steel 1.4571 (V4A) |
| Parts outside the fermenter | Galvanised or painted/coated |
| Base bearing | Silicon carbide mechanical seal |
| Propeller (Ø 2650 mm) | High strength, wear-resistant polymer with steel core |
| Propeller (Ø 1500 mm) | Stainless steel 1.4301 (V2A) |
Safety
- ATEX-certified version for use in explosion protection zones 1 and 2
- Frequency inverter with parameterised safety software (torque limiting, coupling break detection, etc.)
- streisal "SafeGuard" (optional): automatic torque monitoring and control system
- Shear-pin coupling as the final predetermined breaking point