Noise reduction type local fan silencer

The utility model belongs to the technical field of fans. The utility model relates to a silencer, in particular to a noise reduction type local fan silencer. High working noise of fan, problem affecting communication, proposed now is the following scheme, the noise reduction device comprises a fan, a front-end noise reduction mechanism arranged at an air inlet of the fan and a rear-end noise reduction mechanism arranged at an air outlet of the fan. The front end silencing mechanism comprises a shell of an annular structure. A middle acoustic panel of a cylindrical structure is arranged on theinner ring of the shell. One end of the middle sound absorption plate is fixedly connected with an end sound absorption plate of a conical structure, the end sound absorption plate is of a hollow structure, the outer ring of the middle sound absorption plate is fixedly connected with a supporting rod, the other end of the supporting rod is fixedly connected with an outer ring sound absorption plate of an annular structur