Sound insulation device for noise pollution prevention and control

The utility model discloses a sound insulation device for noise pollution prevention and control, which belongs to the technical field of sound insulation equipment and comprises a bottom plate, an opening type base is mounted at the top end of the bottom plate, sound absorption cotton is adhered to the top end of the bottom plate, a detachable sound insulation cover is placed at the top end of the sound absorption cotton, and an observation window is mounted on the side surface of the sound insulation cover. An adjusting assembly used for fixing the soundproof cover is installed at the bottom end of the bottom plate, a mounting groove is formed in the top end of the containing table, a guide rod used for auxiliary adjustment is installed on the inner side of the mounting groove, a linkage block connected with the mounting groove is connected to the periphery of the guide rod, and a fixing spring is installed between the side face of the linkage block and the inner wall of the mounting groove. An arc-shaped f