Robot pumps Robowhirl / DWM

Robot RoboWhirl / DWM submersible mixers can be used in sinks and basins in which fixed solid particles want to settle on the bottom and where a propeller mixer cannot be used. In essence, the Robot Robowhirl is a vortex pump without pump housing. The impeller is located underneath the motor, close to the sump floor. Water will leave the impeller at high velocity and create a strong radial flow. Due to the high velocity, the solid particles, what will moves horizontal over the bottom, will be mixed with the liquid. This in turn results in the agitation and mixing effect on either settled solids, or those already in solution. The stirring effect is maximized close to the floor, but extends throughout the sump to the water surface depending on sump geometry and size. This will prevent the formation of a floating layer on the surface. The Robowhirl is available in cast iron and Stainless Steel Duplex. Also several e-motor options are possible, thermo switches in stator windings, water detector in motor and oil chamber or Atex/Flameproof versions. The rated shaft power ranges from 1.5 kW to 48 kW. In most applications the motor running uncooled will not cause problems. When running prolonged time at full load motor cooling must be considered. The most widely used installation type is freestanding. The smaller units can optionally be provided with a stand with extra fins to prevent the unit from rotating.