What’s new
Our “basic” mechanical design has not been changed since 1992: vertical blades connected at the circumference of a horizontal flat plate. However based on many years of experience and testing with cone-shape and rim-blade aerator types the design of Astrumaer has been optimized pointing out following highlights:
– Increased open space for blade, creating increased splashing
volume (=more contact area between water drops and air) with as
result increased oxygenation capacity
– Angular displacement of blade, with as result smoother operation
and increased oxygenation capacity.
– Bevel shaped outside blade, creating a 10% lower tip speed velocity
at the underside of the aerator which has a positive effect on
mixing and flow propulsion.
– Bended top of blade (partially) which guides the splashing of the
water to avoid uncontrolled splash pattern and also increases the
mechanical strength of blade.
– Reduced diameter of horizontal plate which reduces the
hydraulically up-trust forces working on gearbox and civil
construction.
Besides optimizing the shape of aerator impeller the Astrumaer distinguish itself by other suppliers by selecting the most suitable installation looking at project conditions. By using standardized components, such as intermediate shaft, gearbox and electrical motors and adjust aerator impeller to non-standard lay-out the most optimum “aqua-dynamically” solution will be created looking at oxygenation capacity/efficiency and mixing/flow propulsion.
