Filtering device for waste gas treatment

The utility model discloses a filter device for waste gas treatment, which comprises a dust removal box body, a box cover is arranged on the dust removal box body, a partition plate, a first mounting plate and a second mounting plate are sequentially arranged in the dust removal box body from top to bottom, a wind scooper is arranged on the partition plate, a fan is arranged at the top of the wind scooper, and a filter screen is arranged on the top of the fan. The input end of the fan is connected with the wind scooper, an air outlet pipe is arranged at the output end of the fan, and the air outlet pipe penetrates through the dust removal box body and extends to the outside; a filter plate is arranged between the first mounting plate and the second mounting plate, clamping blocks of the same structure are arranged at the two ends of the filter plate, one end of the filter plate is fixedly connected with the first mounting plate through the clamping blocks, the other end of the filter plate is fixedly connecte