Air filter with filter element convenient to replace

The utility model discloses an air filter with a filter element convenient to replace, which belongs to the technical field of air filtration and comprises an air filter, universal wheels, an air inlet groove, a support frame, a rotating frame, a mounting frame, an air filter screen, activated carbon, a baffle A and a baffle B. The universal wheels are mounted at four corners below the air filter, and the air inlet groove is embedded above the air filter. A supporting frame is slidably arranged on the side in the air filter, and a rotating frame is rotatably arranged above the supporting frame through a bearing. After the air filter screen is replaced, the supporting frame is taken up to carry the air filter screen to be placed into the air filter, the supporting frame is pushed upwards, the baffle A is driven to make sealed contact with the air inlet groove, meanwhile, the limiting protruding block B extrudes the limiting block C and slides into the limiting groove D, and after the limiting protruding block