Draught fan muffler

The invention discloses a draught fan muffler, and belongs to the field of draught fans, and the draught fan muffler is used for draught fan muffling. The draught fan muffler comprises a skeleton, theskeleton forms a frame structure, two-side air intake protective nets are arranged on the two side faces of the frame structure formed by the skeleton, and a front-side air intake protective net is arranged on the front side of the frame structure formed by the skeleton; and muffling plates are arranged in the skeleton in a layered mode, each muffling plate comprises muffling cotton, the upper part and the lower part of the muffling cotton are covered with punching plates, front flow guide plates are arranged at the ends, in the air intake direction, of the punching plates, rear flow guide heads are arranged at the ends, in the air outlet direction, of the punching plates, and the two side faces of the punching plates are sealed through sealing heads. According to the technical scheme, the muffler is compact in s