| 摘要 |
PROBLEM TO BE SOLVED: To improve assembling and disassembling workability in a pump equipped with a suction casing, an intermediate casing, and a check valve casing coaxially, by attaching a plurality of belt-shaped plates extending from a suction casing to check valve casing for fixing an intermediate casing in a sandwiching manner. SOLUTION: A suction casing 4, an intermediate casing 6, and a check valve casing 5 is arranged coaxially, wherein the pump shaft 2 of a motor 1 is rotatably-supported by the bearings of bearing casings 3a, 3b and a plurality of impellers 7 and guide vanes 8 are fixed to the pump shaft 2. The intermediate casing 6 is fixed between the suction casing 4 and the check valve casing 5 so as to be sandwiched by them. Tongue pieces 10a of belt-shaped plates 10 arranged in the circumferential direction so as to be spaced equally are fixed on the suction casing 4 side with bolts and the other ends thereof are inserted into the bolt holes in a collar body 13 formed around the check valve casing 5 so as to protrude, and nuts 18 are screwed onto the screw parts 11 of the other end for fastening, thereby conducting assembly.
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