For those who suffer from noise pollution for a long time, 50% - 80% of them will suffer from hearing damage, and even more, they will cause many hazards such as autonomic nervous disorder, gastrointestinal dysfunction, headache, dizziness and general weakness, and then cause mental health problems such as obsession, depression, anxiety, sleep and eating disorders.
1. Install a silencing tower over the drain. The anechoic tower is cylindrical, with a height of 5m, a diameter of 3.6m, a shell of galvanized steel plate and a C-shaped steel frame, a sound absorption device inside the tower filled with composite sound-absorbing materials, and a base on reinforced concrete.
2. Turning the discharge port upward and installing a cylindrical muffler tower on the discharge port can reduce the ventilation resistance and have a beautiful appearance. The sound insulation cover is made of color steel plate, C-shaped steel and galvanized perforated steel plate of sound-absorbing material.
3. Sound absorption, sound insulation cover, sound insulation door, observation window and ventilation muffler for air exchange are arranged on the periphery of the main fan body.
4. The silencing facilities of the main fan for mining are made of anti-corrosion, waterproof and flame-retardant materials with good safety performance.
5. The service life shall not be less than 8 years. The combination structure is adopted for the installation of the silencing tower and the sound insulation cover, which is convenient for the observation and maintenance of the mine fan.
