Patent ID: 8172550

Claim:
A vacuum self priming pump comprising: a motor; an impeller rotated by the motor; a body for receiving the impeller and provided with a fluid inlet and outlet and an air exhaust tube; and a diaphragm that is installed to suck air into the body through the air exhaust tube, wherein the vacuum self priming pump further comprises: an actuating member that is installed in an outlet by a hinge shaft to be capable of rotating and configured to be quickly opened by water pressure when water is discharged through the outlet; an arm that extends from the actuating member to an external side over the outlet; a clutch unit that is movably formed in a length direction of a rotational shaft of a motor to selectively transfer power to an eccentric wheel to free-rotate the eccentric wheel on the rotational shaft; and a mechanical transferring unit that is installed between the arm and the clutch unit to cut off the power from the clutch unit to the eccentric wheel when the arm moves.