Cofferdam device of water affair system

The utility model discloses a cofferdam device of a water affair system, which belongs to the technical field of sewage treatment and comprises a mounting plate, the upper surface of the mounting plate is fixedly connected with a fixing groove and a fixing rod, the surface of the fixing rod is sleeved with a movable sleeve, the surface of the movable sleeve is fixedly connected with a floating plate, and the floating plate is fixedly connected with the fixing groove. The water affair system cofferdam device comprises a floating plate, the upper surface of the floating plate is fixedly connected with an extrusion block, the surface of a fixing groove is fixedly connected with a protective shell, and the interior of the protective shell is fixedly connected with a pressure sensor. When a worker uses the device to enclose sewage, under the action of a pressure sensor and an extrusion block, the liquid level of the sewage in sewage treatment can be detected in real time, so that people are reminded of the change