An impeller is a rotor inside a tube or conduit to increase the pressure and flow of a fluid.

Impellers in Pumps

An impeller is a rotating component of a pump , usually made of iron, steel, aluminum or plastic, which transfers energy from the motor that drives the pump to the fluid being pumped by forcing the fluid outwards from the centre of rotation. Impellers are usually short cylinders with protrusions forming paddles to push the fluid and a splined center to accept a driveshaft. Manual water pump in Košice-Ťahanovce, Slovakia An electric driven pump of water works nearby the Hengstey See, Germany 19th century Dutch diesel pump in Rijswijk, Netherlands Manual pump used to obtain water in Afghanistan This article is about the mechanical device. ... A motor is a device that converts energy into mechanical power, and is often synonymous with engine. ... A subset of the phases of matter, fluids include liquids, gases, plasmas and, to some extent, plastic solids. ... A subset of the phases of matter, fluids include liquids, gases, plasmas and, to some extent, plastic solids. ...

Impellers in Water Jets

Some impellers are similar to small propellers but without the large blades. Among other uses, they are used in water jet to power high speed boats. To meet Wikipedias quality standards, this article or section may require cleanup. ... Typical jet ski pump jet A pump-jet is a marine propulsion system that creates a jet of water for impulse. ...

Since impellers have no large blades to turn, they can spin at much higher speeds than propellers. The water forced through the impeller is channelled by the housing, creating a water jet that propels the vessel forward. The housing is normally tapered into a nozzle to increase the speed of the water, which also creates a Venturi effect in which low pressure behind the impeller pulls more water towards the blades, so tending to increase the speed. The Venturi effect is a special case of Bernoullis principle, in the case of fluid or air flow through a tube or pipe with a constriction in it. ...

To work efficiently, there must be a close fit between the impeller and the housing. The housing is normally fitted with a replaceable wear ring which tends to wear as sand or other particles are thrown against the housing side by the impeller. For other uses, see Sand (disambiguation). ...

Vessels using impellers are normally steered by changing the direction of the water jet.

Compare to propeller and jet aircraft engines. To meet Wikipedias quality standards, this article or section may require cleanup. ... A Pratt and Whitney turbofan engine for the F-15 Eagle is tested at Robins Air Force Base, Georgia, USA. The tunnel behind the engine muffles noise and allows exhaust to escape. ... Airbus A380 An aircraft is any machine capable of atmospheric flight. ...

Impellers in agitated tanks

Impellers in agitated tanks are used to mix fluids or slurry in the tank. This can be used to combine materials; solids, liquids, gas. Mixing the fluids in a tank is very important if there are temperature, concentrations, etc. gradients. (Example: If one heats a pot of tomato soup on the stove the water is the warmest on the bottom. The soup will warm up faster if the pot is stirred. Stirring also prevents the soup on the bottom of the pot from getting scorched (getting too hot and decomposing). In the above two images, the scalar field is in black and white, black representing higher values, and its corresponding gradient is represented by blue arrows. ...

Impellers in washing machines

Some constructions of washing machines use impellers to agitate the laundry during washing. Front-loading washing machine. ... Look up agitation in Wiktionary, the free dictionary. ...