LEWA intellidrive - LEWA combines what was separate before
Pumps with frequency controlled standard drives and a separate servo drive for stroke length setting can now be combined into a single unit. A partial stroke mode takes over the function of the stroke length setting for setting the volume flow. The pump piston does not move completely to front dead center in the discharge stroke phase – depending on the desired flow rate, the piston stops beforehand and moves back into the suction stroke.
The innovation: the angular speed can be changed during a rotation (that is, also within the discharge and/or suction phase). As a result, we are able to achieve a variable change of the stroke speed so that the fluid kinematics can be matched exactly to the requirements of your process. The duration of the suction stroke can be longer than the discharge stroke, as is the case with high-viscosity media.