| 摘要 |
A centrifugal pump that comprises a casing in which an impeller is arranged. The impeller has a back side that faces a back plate of the centrifugal pump, and one or more vanes for pumping the fluid. The back side of the impeller comprises a segmented scraper for scraping from the back plate material that has been deposited from the fluid. The segmented scraper comprises multiple protrusions, wherein each protrusion of the multiple protrusions is facing the back plate, and an aggregated radial extension of the protrusions equals a radius of the impeller within an interval of ±10%, ±25% or even up to ±40%. |
