| 摘要 |
PROBLEM TO BE SOLVED: To provide a multistage pump that allows its high-accuracy assembly to be realized while allowing its production process and production cost to be greatly reduced, and that allows a working space for assembly and disassembly of intermediate barrels to be reduced.SOLUTION: A multistage pump comprises: a shaft 1; a plurality of impellers 2 fixed to the shaft 1; a plurality of intermediate barrels 3A-3D that house the impellers 2; plate materials 15 arranged around the plurality of intermediate barrels 3A-3D and extending in parallel with the shaft 1; an outer casing 8 that surrounds the plurality of intermediate barrels 3A-3D and the plate materials 15; and a first fixing mechanism 22 and a second fixing mechanism 24 that fix the plate materials 15 to the plurality of intermediate barrels 3A-3D. |
