Waste polyester alcoholysis solution filtering device

The utility model relates to a waste polyester alcoholysis solution filtering device which comprises a pipe body, a protruding block is annularly arranged on the inner wall of a pipe opening of the pipe body. A filtering pipe is vertically inserted into a pipe opening of the pipe body, and the bottom of the filtering pipe is attached to the top face of the protruding block; a first filter screen is arranged in the filter pipe; a baffle is annularly arranged on the inner wall of the bottom of the protruding block. A second filter screen is placed on the baffle plate; the diameter of the second filter screen is smaller than that of the inner wall of the convex block; an extension end attached to the baffle is annularly arranged on the outer side of an inlet in the top end of the second filter screen; the extending end is tightly attached to the inner wall of the convex block; an ultrasonic generator is arranged on the inner wall of the pipe body and located below the protruding block. The aperture of the second