| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: invention relates to pump production and can be used for pumping various fluids. The proposed pump comprises impeller with hub fitted on the shaft and auger. The hollow pump shaft houses additional shaft with its one end accommodating auger and its other end fitted with hydraulic turbine. Right opposite the said turbine, the impeller hub has holes. There is a channel arranged between the impeller hub and additional shaft to return the pump-over product from hydraulic turbine to the pump inlet. At least, one bearing is fitted between the shaft and additional shaft. The shaft is linked up with the drive shaft via coupling. ^ EFFECT: improved cavitation properties. ^ 3 cl, 3 dwg |
