| 摘要 |
A pump enhancing the pumping effect and controlling the discharge flow rate is provided to smoothly pump the fluid in which the various contaminant is included. A pump comprises: a pump casing(100), an counter flow preventing valve(140), an inhalation driving part(200), an discharging driving part(300) and a converting part(400). The pump casing comprises an inlet(110), an outlet(120) and a pump room(130). The pump room connects the inlet and the outlet. The counter flow preventing valve opens and closes the inlet. The inhalation driving part makes the fluid flowed in the pump room by opening the counter flow preventing valve. The discharging driving part discharges the fluid, coming in the pump room, through the outlet. The converting part alternately operates the inhalation driving part and the discharging driving part. |
