Please explain the working principle of a centripetal pump with a simple diagram if possible?

Answer 1

Centrifugal pumps contain 2 pieces called the rotor and the stator. The rotor draws fluid in to the center where rotating blades fling the fluid outward. The stator sits around the rotor and gathers the fluid and redirects it to a common outlet to build pressure, if the stator wasn't there the fluid would fling out in all directions. The underlying principle is the rotating blades impart energy to the fluid to create velocity and the stator redirects it to create pressure. Picture a block of water sitting on the floor at the bottom of the ramp, now picture pushing the ramp under the block of fluid, push it hard enough and the block of water slides up the ramp and goes flying in the air. The rotor works like like the ramp being pushed under the fluid and sending it flying the stator then catches the fluid and directs it to where it is useful.

Centripetal pumps draw fluid in at the periphery and expel it at the center axis. Upon further searching it seems like there aren't that many actual centripetal pumps out there, just many mislabeled centrifugal ones, so information is somewhat limited. The link below is the best visual comparison I could find.

*While in past there may have been a difference, today Centrifugal and Centripetal are used interchangeably and refer to the outward force of a rotating body. The link below, while containing useful diagrams, does not contain useful information. The Centripetal pump he describes is designed to work "like a tornado." While this may sound plausible, whirlpools and tornadoes form when the higher density fluid is forced to the outside by centrifugal force leaving the less dense air in the middle.Pumping fluid from the outside in requires the pump to overcome the outward force of the spinning fluid. Will it pump? Yes. Will it be efficient? No. That's why there are no "centripetal" pumps that force the fluid to the "eye" of the impeller.

Answer 2

A centripetal pump works by using centrifugal force to move fluid through the pump. As the impeller inside the pump spins, it creates a centrifugal force that pushes the fluid towards the center of the pump. This force creates a vacuum at the center of the pump, which draws more fluid in. The fluid is then pushed out through an outlet at a higher pressure. Think of it like swinging a bucket of water around in a circle - the water moves towards the center due to the force of the swing.