DEVICE FOR CLEANING WATER RESERVOIRS AND SAPROPEL EXCAVATION Russian patent published in 1995 - IPC

FIELD: cleaning of water reservoirs. SUBSTANCE: chamber of pumping unit is separated by partition. Secured to the center of partition is pipe. Tore is installed inside pipe. Hose is passed through tore. Hose ends are turned inside out and attached to chamber inner walls to form hollows which are communicated with system supplying and discharging the working medium. EFFECT: higher efficiency. 1 dwg