Inverted siphon device capable of automatically dredging

The utility model discloses an inverted siphon device capable of automatically dredging. A sewage inlet pipe is fixedly connected with a first overhaul well, the first overhaul well is fixedly connected with a second overhaul well through a water drain pipe, the second overhaul well is fixedly connected with a sewage outlet pipe, and the water drain pipe is lower than the sewage inlet pipe and the sewage outlet pipe; the device further comprises a cleaning pipe, the cleaning pipe is located outside the first inspection well and the second inspection well and fixedly connected with a first branch pipe and a second branch pipe, the first branch pipe extends into the first inspection well, and the center height of a water spraying opening of the first branch pipe is consistent with the center height of the section of the water drainage pipe. The second branch pipe extends into the drainage pipe; the device further comprises an automatic control flushing device. The device has the function of automatically cleani