To provide a vacuum self-priming pump which can attain, in addition to saving of the cost of the self-priming pump but, improvement in the operation reliability by preventing failure of the pump.
The vacuum self-priming pump includes a working member 2, provided rotatably movable on a discharge port 55 through a hinge shaft 1, and formed so as to be rapidly opened by hydraulic pressure, when water is discharged to the discharge port 55; an arm 3, extending from the working member 2 and further extending out of the discharge port 55; a clutch part 4, formed on a rotating shaft 58 of a motor 50 so as to be movable in longitudinal direction, and configured to perform transmission and interruption of power to an eccentric ring 59 freely rotating around the rotating shaft 58; and a transmission means, provided between the arm 3 and the clutch part 4 and constituted so as to interrupt the power of the eccentric shaft 59 by the clutch part 4, when the arm 3 is moved.
JP2009002324A | 2009-01-08 | |||
JPH087827Y2 | 1996-03-04 | |||
JPH045898Y2 | 1992-02-19 |