Catalytic combustion waste gas treatment device

The utility model belongs to the technical field of waste gas treatment, and particularly relates to a catalytic combustion waste gas treatment device which comprises a filter box, an absorption box is arranged at the right end of the filter box, a mounting frame is longitudinally and fixedly arranged in the filter box, and a filter screen is fixedly arranged in the mounting frame. An air inlet pipe is fixedly arranged on the left side wall of the filter box, an air outlet pipe is fixedly arranged on the right side wall of the filter box, the right end of the air outlet pipe extends into the absorption box, a moving mechanism is fixedly arranged at the left end of a filter screen, and a mounting plate is fixedly arranged at the right end of the moving mechanism through a connecting mechanism; when the filter screen is blocked after the filter screen filters waste gas for a long time, the water pump can be directly used for pumping absorption liquid to back wash the filter screen, and then the cleaning brush i