CPC A47L 11/4091 (2013.01) [B08B 3/02 (2013.01); A47L 2201/028 (2013.01); B08B 2203/027 (2013.01)] | 20 Claims |
1. A pumping and drainage system, wherein the pumping and drainage system comprises:
a first water tank, the first water tank is defined with a water storage cavity and a vent communicated with the water storage cavity;
a gas source system communicated with the vent;
in case the gas source system is in a first state, gas in the water storage cavity is discharged through the vent and the gas source system successively, causing the water storage cavity to be in a negative pressure state, allowing fluid to be sucked into the water storage cavity; in case the gas source system is in a second state, gas is delivered to the water storage cavity by the gas source system through the vent, causing the water storage cavity to be in a positive pressure state, allowing fluid in the water storage cavity to be discharged.
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