Intelligent plunger for water drainage and gas recovery

The intelligent plunger comprises a plunger body, inflation cavities are formed in the surfaces of the two sides of the plunger body, two sealing plates are connected to the inner walls of the inflation cavities in a sliding mode, brake blocks are arranged on the side faces of the two sealing plates, non-slip mats are arranged on the side faces of the brake blocks, a rectangular cavity is formed in the plunger body, and the rectangular cavity is communicated with the inflation cavities. And a small air pump, a storage battery and a small PLC are arranged on the inner wall of the rectangular cavity, and the air outlet end of the small air pump extends into the inflation cavity. According to the intelligent plunger for water drainage and gas production, in the falling process, when the plunger moves downwards to the designated position below the liquid level, a pressure sensor transmits a signal to a small PLC, the small PLC automatically controls a small air pump to be started, the interior of an inflation cav