| 摘要 |
<p>The pump has a stator including blade sectors (26a-26j) arranged around a rotor (18), where the blade sectors are divided into axial lines. The blade sectors are connected and integrated with a concave internal face of corresponding peripheral structure (24,25) of the stator to form a multi-stage sector. The internal face has retaining units (24a-24j) for retaining individually each sector blade in a position.</p> |
