Continuous working spiral deslagging filter

The utility model relates to a spiral deslagging filter capable of continuously working, which is characterized in that a speed reducing motor is started, and a spiral deslagging device rotates slowly. A solid-liquid mixture entering from the feeding pipe enters the filtering area, and filtrate penetrates through the wedge-shaped filtering net and is discharged from the filtrate outlet pipe; the filter residue is intercepted on the filter surface of the wedge-shaped filter screen, the filter residue moves forwards along with the spiral blade under the pushing of the spiral residue separator rotating at a low speed, the filter surface is continuously updated, the filter efficiency is improved, and meanwhile, the filter residue falls into the filter residue storage tank. When the filter residue storage tank is full of filter residues, the filter residue stacking laser sensor sends out a signal, an inlet electric butterfly valve of the filter residue storage tank is closed, a residue discharging electric butterf