Sludge backwashing complete three-phase separation device

The invention discloses a sludge backwashing complete three-phase separation device, and relates to the technical field of sludge treatment equipment. The input end of the air pump is communicated with the air inducing cover through a pipeline, and the output end of the air pump is connected with external air treatment equipment through a pipeline; the mounting plate is rotationally arranged on the bottom surface of the lifting plate through a flat-top thrust ball bearing, and a flow guide channel is formed in the mounting plate; the spray heads are communicated with the flow guide channel; the electromagnets are fixedly embedded in the periphery of the bottom surface of the mounting plate; the left and right sides of the fixing ring are arranged on the limiting seats on the left and right sides; the upper side edge of the filtering frame is fixedly arranged on the bottom surface of the fixing ring; a plurality of limiting holes are formed in the bottom surface of the fixing strip; the multiple clamping colum