kierrepumppu

Kierrepumppu, also known as a screw pump or Archimedes' screw pump, is a positive displacement machine that uses a helical screw to move fluids. The screw is typically housed within a cylindrical casing, and as the screw rotates, it traps fluid in the spaces between its threads and the casing. This rotation then forces the fluid along the length of the screw towards the discharge port.

There are several types of kierrepumppu designs, including single-screw and twin-screw configurations. Single-screw pumps often have a helical rotor that rotates eccentrically within a stator that has a different pitch or shape. This creates sealed cavities that move the fluid. Twin-screw pumps feature two intermeshing screws that rotate in opposite directions, effectively pumping the fluid between them.

Kierrepumput are known for their ability to handle a wide range of viscosities, from thin liquids to thick sludges and even solids. They operate at low speeds, which results in gentle pumping action and minimal shear, making them suitable for sensitive materials. They are also self-priming and can run dry for short periods without damage.

Common applications for kierrepumppu include pumping wastewater, sewage, sludge, food products, chemicals, and viscous oils. Their reliability and ability to handle challenging fluids have made them a valuable tool in various industrial and municipal settings. The efficiency of a kierrepumppu is dependent on factors such as fluid viscosity, screw speed, and the precise design of the screw and stator.