| 摘要 |
PURPOSE:To prevent clogging of a submergible pump, by producing swirl of intake water flow at the intake system of the pump for separting sand contained in water by the function of centrifugal force, and thereby unnecessitating filters for separating sand from water. CONSTITUTION:When a motor 9 is set into rotation, well water containing sand is introduced from an inlet port 1 into a swirl chamber 12 and flows downward with swirl as shown by arrows in the drawing. During the above while, sand is separated from water by the function of centrifugal force produced by the swirl of water flow, so that sand swirls along the wall surface and is introduced into a sand caturing chamber 13. On the other hand, water at the central portion of the chamber 12, not containing sand, is imparted with energy by a runner 7 and ejected as pressure water onto the ground via an outlet passage 6 and an outlet pipe 10. Therefore, it is enabled to unnecessitate filters. |
