EFFICIENT AND EFFECTIVE MIXING TECHNOLOGY
Impeller selection is based upon the predominant flow pattern and fluid shear required by the process. Since most mixing applications are flow control problems, a high efficiency axial flow hydrofoil will provide the most cost effective solution.
Available impeller types include Rushton Disc, Helix, Anchor and Propeller. However, the RTF4 hydrofoil is the most efficient impeller in the market today.
The Chemplant RTF4 hydrofoil is a leader in the field of power saving agitator technology. The RTF4 impeller was hydro-dynamically developed to reduce power consumption. This is achieved by maximizing flow and minimizing turbulence or shear. Turbulence at the impeller gives no flow but does consume power.
The RTF4 hydrofoil transfers the available energy into pure axial flow without turbulence at the impeller.
Due to a low power number, retrofitting with our RTF4 hydrofoil can increase the agitation intensity and agitator service factor whilst retaining the existing drive assembly.
The RTF4 hydrofoil achieves its high efficiency in three ways:
The RTF4 blade is slim at the tip where the speed is greatest and wider at the base where the speed is lowest. This results in uniform, flow across the impeller diameter.
The twist in the RTF4 blade is evenly decreasing from the inner hub out toward the tip. The twist is carefully proportioned to avoid turbulence anywhere on the blade.
The key to high pumping is the arch, or radius, which is geometrically shaped to provide a low angle of attack at the leading edge. This directs powerful currents downward.
Our high efficiency RTF4 hydrofoil has been used to retrofit existing agitators which were inefficient due to the following:
- Undersized agitator, resulting in low solids suspension
- Changes in slurry characteristics resulting in motor overloading
- Mechanical failure due to low service factors in the design of gear reducers and shaft / impeller assembly
Retrofitting with our RTF4 hydrofoil can increase the agitation intensity and agitator service factor whilst retaining the existing drive assembly.