Waste gas treatment device with filtering structure convenient to disassemble and assemble

The waste gas treatment device comprises a base, a purification box is fixedly installed at the top of the base, a pressing mechanism is fixedly installed at the top of the purification box, a filtering mechanism is arranged at the position, located at the bottom of the pressing mechanism, of the top of the purification box, and a dispersing mechanism is arranged at the bottom in the purification box. And a suction fan is fixedly installed on the left side of the purification box, the output end of the suction fan communicates with the input end of the dispersion mechanism, and an air outlet pipe is fixedly installed at the upper end of the right side of the purification box. By adopting the structure, the top cover can be taken out from the top of the purifying box in threaded connection by rotating the top cover when needing to be disassembled, and the activated carbon filter screen, the glass fiber filter screen, the non-woven fabric filter screen and the filter silk screen can be correspondingly taken out