| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump capable of preventing bite and catch of impurity during pumping. SOLUTION: A plurality of rotary blades 42 are provided on a back surface side of a main plate 12b of an impeller 12 opposing to a wear protector 39 at a pump casing 356 side. A plurality of fixed blades 43 are provided on the wear protector 39 with opposing to the rotary blades 42. COPYRIGHT: (C)2009,JPO&INPIT
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