Printing and dyeing sewage filtering device

A printing and dyeing sewage filtering device belongs to the technical field of printing and dyeing sewage treatment. Comprising a machine body, a filter screen, a mounting box and a discharging groove, a scraper is arranged in the machine body and is a block of a trapezoidal structure, a spring is fixedly mounted in the mounting box, the front end of the spring is fixedly connected with the rear side wall face of the scraper, and sliding grooves are formed in the left side wall and the right side wall in the machine body; sliding blocks movably connected with the sliding grooves are fixedly installed on the left side wall and the right side wall of the scraper, an elastic piece is movably installed at the bottom in the machine body, and a trigger plate matched with the interior of the machine body is fixedly installed at the top of the elastic piece. According to the printing and dyeing sewage filtering device disclosed by the utility model, the scraper drives the sliding block to move in the sliding chute,