| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary pump which achieves easy attachment of a mouth ring and enables replacement of the mouth ring to be carried out with easy work and high work efficiency. SOLUTION: Impellers 10A, 10B, 10C of the rotary pump are rotated by drive of an electric motor 1 arranged at a pump bracket 20. A wall 103 for receiving the mouth ring is arranged at a suction bracket 100, and the mouth ring 62 is attached to the wall 103 for receiving the mouth ring by using a mouth ring cover 92. COPYRIGHT: (C)2004,JPO
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