What does the impeller of a variable displacement pump do?

The impeller of a variable displacement pump plays a crucial role in fluid dynamics by expelling fluid outward from the center of rotation. When the impeller spins, centrifugal force is generated, which pushes the fluid away from the center and into the pump's outlet. This action creates movement and pressure within the system, effectively facilitating the transfer of fluid through pipelines or to various applications.

In a variable displacement pump, the design of the impeller allows for adjustments in the flow rate and pressure by changing the angle or position of the vanes or blades, which directly affects how much fluid is moved with each rotation. This capability is essential for systems requiring varying flow rates and pressure levels based on operational demands. The ability to control the displacement means that the pump can respond dynamically to different system requirements, thereby enhancing efficiency and performance in fluid delivery.

Understanding the function of the impeller is vital for plumbing applications where precise control of fluid movement is often necessary.