| 摘要 |
PURPOSE:To aim at reduction in working manhour and improvement in accuracy of finishing as well as to get rid of such an accident as cutting operator's hands by installing an axial flow type pumping element, arranged with a moving blade and a stationary blade alternately, in space between an inlet and an outlet, and forming the stationary blade with plastics. CONSTITUTION:An axial flow type pumping element 7, where plural pieces of moving blades 5 being rotated by a rotor 4 and plural pieces of stationary blades 6 being fixed to a casing 1 are set up in space between a inlet 2 and an outlet 3. Both first and second stationary blades 61, 62 constituting the stationary blades 6 are formed with plastics. Thus, working manhour for the stationary blade 6 is reducible, and that forming accuracy for the stationary blade 6 is securable. In addition, such a possibility that an operator or the like may cut his hands by its edge part can be lessened as little as negligible. |
