Low-resistance high-efficiency air filter

The utility model discloses a low-resistance high-efficiency air filter which comprises a filter body, a top groove is formed in the top of the filter body, a limiting groove is formed in one side of the inner wall of the top groove, a vertical frame is connected to one side of the limiting groove in a sliding mode, a cleaning brush is installed on one side of the vertical frame through bolts, and a filter screen is connected to one side of the filter body in a sliding and inserted mode. Resistance reducing strips are fixedly mounted on the two sides of the outer wall of the filter screen, a suction strip is mounted on the outer wall of one side of the filter screen through bolts, a side plate is welded to the outer wall of one side of the suction strip, magnets are welded to the two sides of the outer wall of the filter body, concave grooves are formed in the inner walls of the two sides of the filter body, and an inner filter screen is mounted on one side of the inner wall of the filter body through bolts;