| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pump reduced in the turbulence of fluid flow within a casing. <P>SOLUTION: A casing that forms a fluid flow channel there-inside and houses impellers therein increasing the diameters from the tip end side to the foundation end side, and a guiding cylindrical member 5 of trumpet form that communicates with the fluid suction port formed in the casing, formed with an impeller clearance with the impeller while facing the impeller and is radially expanded from the fluid suction port side to tip end side along the contour of the impellers, are provided. A guiding cylindrical member 8 that has a flange part 7 for installing the member to the inner wall of the casing through a fastening tool 6, on the outer circumference of the fluid suction port side of the guiding cylindrical member, is detachably provided to the casing, a reinforcing members 13 are installed each from the guiding cylindrical member 5 to the flange part 7, at plural circumferential parts other than the joint part secured by means of the fastening tool 6, outside the radial direction of the guiding cylindrical member 8, and a guiding slope surface part 13A for guiding the fluid to the outer circumferential side is formed at least at one of the reinforcing members 13. <P>COPYRIGHT: (C)2012,JPO&INPIT |
