Sluice automatic switch system

The utility model discloses a sluice automatic switch system is applicable to the dirty mixed flow section rainwater pipe network of rain, including rainfall collector, automatic control circuit and at least one electrode type liquid level meter, the rainfall collector is the open water tank in top, and water tank lateral wall bottom is equipped with the outlet, and electrode type liquid level meter is equipped with two liquid level collection electrode and two liquid level collection electrode have the difference in height, in the dirty mixed flow section rainwater pipe network of rain was placed in to the rainfall collector, in electrode type liquid level meter placed the rainwater collector in, electrode type liquid level meter linked to each other with automatic control circuit, and automatic control circuit links to each other with the rainwater floodgate, electrode type liquid level meter's high potential electrode is gathered and is switched on automatic control circuit controlrainwater floodgate behin