Waste liquid conveying device

The utility model discloses a waste liquid conveying device which comprises a waste liquid storage device, a conveying pump, a pipeline, a spray gun, a decomposing furnace and a control device, a liquid outlet below the waste liquid storage device is connected with a liquid conveying pump through the pipeline, the liquid conveying pump is connected with the decomposing furnace through the pipeline, and the spray gun is installed at the tail end of the pipeline. The device has the functions that heat energy in tail liquid and tail gas after waste incineration can be utilized, water is heated into high-temperature water vapor through the heat energy, the high-temperature water vapor is discharged from the gas inlet pipe, then the high-temperature water vapor is pressurized through the pressurizer on the gas inlet pipe, and then the high-temperature water vapor is discharged into the waste liquid storage device; in this way, the inner cavity of the waste liquid storage device can be pressurized while the waste l