Plate-and-frame filter

The utility model relates to the technical field of filters. The utility model discloses a plate-and-frame filter. Box body, the center of the left side of the box fixedly communicates with a feedingport. The center of the right side of the box body fixedly communicates with a discharging opening; a flip is hinged to the left side of the top of the box; a filtering device is movably inserted intothe inner wall of the box body; the three filtering devices are arranged at equal intervals; the filtering device comprises two limiting frames and a filtering net; the filter screen is positioned between the two limiting frames; a waste box is movably inserted into the front surface of the bottom of the left limiting frame; the bottom of the waste box communicates with the bottom of the inner wall of the limiting frame; a stepping motor is fixedly connected to the top of the front of the inner wall of the right limiting frame; by arranging the limiting frames and the filter screens and matching with the fixing bolts,