Cleaning and pollution discharge filter

The embodiment of the utility model discloses a cleaning and pollution discharge filter. The invention belongs to the technical field of pipeline filtering equipment. The three-way valve comprises a three-way valve body, wherein the three-way valve body is provided with an inlet and an outlet; a bypass port is formed between the inlet and the outlet in the three-way valve body; wherein a bypass port is formed in the three-way valve body, a valve cover for blocking the bypass port is arranged on the three-way valve body, a cylindrical filter element is installed in the bypass port, the two endsof the cylindrical filter element are open, the cylindrical filter element and the bypass port are coaxially arranged, a steel brush driven by a power mechanism is installed in the cylindrical filterelement, and the steel brush abuts against the inner wall of the cylindrical filter element. The embodiment of the utility model solves the problem that impurities in the filter screen cannot be cleaned by cleaning the pollut