Knoll screw pumpInfo:

A screw pump is a rotary positive displacement pump that can have one or more screws transporting high or low viscosity fluids along the shaft. A typical example of a screw pump is the Archimedes screw pump, which is still used for irrigation and agricultural applications.

Knoll Screw pump Features:

Although a screw pump can be called a single screw pump, a screw pump usually has two or more meshing screws that rotate in an axial clockwise or counterclockwise direction. Each thread is matched to carry a specific volume of fluid. Like gear pumps, screw pumps can include a fixed screw and one or more rotating screws. Fluid is transferred from one thread to the next through continuous contact between the housing and the thread. Geometry can vary. Screw pumps provide a specific volume for each cycle and are reliable in metering applications.

Knoll screw pump Application:

A combination of factors related to the drive speed, flow rate, and fluid characteristics of the transfer may affect the flow rate and volume through each cavity. In water and wastewater treatment applications, solutions with lower viscosity will require lower drive power compared to untreated sewage, residual sludge or concentrated slurries that may require higher power motors. The viscosity of the transmitted fluid and the required lift may affect the speed and power required. Indicators of pump failure include reduced flow or increased noise. The efficiency of a screw pump requires each rotor to turn at a rate that allows each cavity to be fully filled in order to operate at full load.

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