Energy consumption and performance of the pump with a mixer - Experimental tests

Pumps with mixer placed at the inlet to the impeller may be used for loosening and mixing solid deposits left at the bottom of a tank followed by pumping them out. This article discusses tests, which purpose was to determine the pump performance with the use of various mixers. There were 6 mixers that differed in shapes and sizes. During the measurements taken on pure water the impact of various mixers on the pump performance characteristics was searched for. Measurements of the power consumed by the mixers were also taken. During the measurements taken on the mixture of water and sand, efficiency of pumping out the solids was determined by applying various mixers. The results of the testing include the value of volumetric concentration of impurities and the mass flow of impurities for various mixers. Calculations of the energy consumed to pump out the mass unit of the solids were made as well. The effect of the works carried out is that the mixer with the highest performance and the lowest energy consumption was determined.