When the liquid-leakage preventing device from the axial complete penetration section of the patent 909848th number axial flow die small-sized pump is executed, the impeller and the partition which for leak prevention designate that noise is lightened as purpose.

摘要

(57) Abstract (Modified) Topic Lightening the noise from the axial complete penetration section of the axial flow die small-sized pumpThe impeller for leak prevention and the offer of the partition which designate that it does as purpose. SolutionsOn rear side 10 of impeller 11 for leak prevention airIn order not to accumulate completely, in the place where it is close to the possible limit centerInside thing and the emission opening which provide the groove 13 imbalance of pressureThe circumference slant face partition kind of drawing 4 where distribution does not occur is provided, it is denseWith.