| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a centrifugal pump capable of being fixed by heating treatment such as welding, brazing or solvent welding, capable of using a metal case and piping high in airtightness, and capable of being used for fluid requiring pressure resistance and airtightness.SOLUTION: In a centrifugal pump 10, a body case 34 includes: an upper body case 36; a lower body case 48 fixed on the upper body case 36; and a blade case 68 partitioning an inner space S1 formed by the upper body case 36 and the lower body case 48, forming a fluid introduction flow passage 84 in an upper part and forming a rotation part storage space S2 for storing a rotary blade member 12 in a lower part. Joining parts of the upper body case 36, the lower body case 48 and the blade case 68 are fixed in the sealed state, and joining parts of an intake side joint member 42 and the body case 34, and joining parts of a delivery side joint member 46 and the body case 34 are fixed in the sealed state.</p> |
