Improving impeller and water flow section of vane pumps Alisher Dzhurabekov, Jaloliddin Rashidov, Aleksandr Gazaryan, Boybek Kholbutaev, Shakhnoza Mansurova and Norpulat Tashmatov E3S Web of Conf., 365 (2023) 03002 Published online: 30 January 2023 DOI: 10.1051/e3sconf/202336503002