The utility model discloses an
engineering machinery silencer, and relates to the technical field of silencers, and the technical scheme is that the
engineering machinery silencer comprises a heat insulation module which is used for insulating heat generated in the working process of a device and comprises an inner
barrel, the side wall of the inner
barrel is fixedly connected with second heat insulation cotton, the side wall of the second heat insulation cotton is fixedly connected with an outer
barrel, and the outer barrel is fixedly connected with a heat insulation cover. The pretreatment module is used for eliminating part of low and
medium frequency noise and comprises an air inlet
pipe penetrating through the side walls of the outer cylinder body and the inner cylinder body, the other side of the inner side wall of the air inlet
pipe is fixedly connected with a blanking cap, and the pretreatment module is used for eliminating part of the low and
medium frequency noise and comprises an air inlet
pipe penetrating through the side walls of the outer cylinder body and the inner cylinder body; the
engineering machinery silencer has the advantages that the service life of equipment is effectively prolonged by arranging the heat insulation module, low and
medium frequency noise generated by
airflow can be preliminarily eliminated by arranging the pretreatment module, pretreatment of the
airflow is effectively achieved, and the
noise elimination efficiency is effectively improved by arranging the treatment module.