Overflow alarm device

The utility model discloses an overflow alarm device, including the box body, the liquid level switch of dress in the box body to reach the alarm by liquid level switch control, be equipped with the baffle inside the box body, the baffle divide into hydrops chamber and exhaust chamber with the box body, be equipped with the inlet on the box body of hydrops chamber one side, be equipped with the liquid outlet on the box body of exhaust chamber one side, the liquid level height that highly is greater than the closed work of liquid level switch of baffle, the lower part of baffle is equipped with intercommunication hydrops chamber and exhaust chamber passageway, and the flow area of inlet is greater than the flow area of intercommunication hydrops chamber and exhaust chamber passageway, and overflow liquid is accumulated the liquid level switch closing control alarm and is reported to the police, overflow liquid is discharged through intercommunication passageway and liquid outlet, and the liquid level switch di