| 摘要 |
A flow control device for a fluid pump having a path for fluid flow therethrough substantially along a predetermined axis, the path having successive portions of reduced and enlarged size relative to each other substantially concentric to the axis, an impeller mounted for rotational movement within the portion of enlarged size to draw fluid along the path, the flow control device having a tubular member adapted to be mounted on the pump substantially coincident with the portion of reduced size and extending into the impeller for introducing the fluid flow thereto.
|
