Self-priming type water absorption pump null for bath water

摘要

PURPOSE: To improve compact storing property, reduce a cost and improve the balance between self suction property and discharge property by arranging a mechanical seal between a coupling and a pump runner and forming the coupling with an insulation material. ;CONSTITUTION: A cylinder part 40m for holding a motor 43, a pump runner room, a room for storing a mechanical seal 48 and a coupling 45, one part of air water separation room and a water passage 40e for cooling are integrally installed in a casing 40. Further, a water escape hole 40f for draining the leak water from the mechanical seal 48 and vapour escape holes 40g, 40h for draining the vapour generated around the coupling 45 and the motor 43 are provided. A runner shaft 49 is connected to a motor shaft 43a through the coupling 45 consisting of an insulation material. Thereby, an electric leak from the motor 43 to the pump runner side can be eliminated and an electric shock can be prevented.;COPYRIGHT: (C)1996,JPO