Deslagging device with sealed top end and fluidization function

The utility model provides a deslagging device with a sealed top end and a fluidization function. The deslagging device comprises a deslagging pipe, a connecting pipe, a lifting driving mechanism and a plug, and the slag discharging pipe comprises a blanking pipe and a discharging pipe. A through hole is formed in the bottom of the discharging pipe and located under the discharging pipe. The top of the connecting pipe passes through the through hole and extends to a top feeding port of the discharging pipe, and the bottom of the connecting pipe is connected with and driven by the lifting driving mechanism. Butt joints connected with internal pipelines are arranged on the periphery of the bottom of the connecting pipe. And the plug is mounted at the top of the connecting pipe and is used for plugging/opening a top feeding hole of the blanking pipe. An exhaust port is formed in the top and/or the periphery of the plug and is connected with an internal pipeline of the connecting pipe. According to the utility mo