Sewage filtering and separating device of slag discharging opening

The utility model discloses a sewage filtering and separating device of a slag discharge port, which is used for filtering sewage. Comprising a receiving box, a filtering gauze element and a scrubbing mechanism; the bearing box is rectangular, a water inlet pipe is arranged on the upper portion of the front side of the bearing box, through holes are formed in the positions, close to the front end and the rear end, of the left side wall and the right side wall of the bearing box respectively, the filtering gauze element is transversely connected between the through holes in the two sides of the bearing box, and the longitudinal section of the filtering gauze element is annular. Shaft rods are arranged in the rings at the front end and the rear end of the filter gauze element in a penetrating manner and correspond to the through holes; the shaft rods on the front and rear sides rotate to drive the filter gauze to rotate; the brushing mechanism is arranged on the rear side of the receiving box and comprises a br