Mechanical noise includes ball mill noise, shearing machine noise, locomotive noise and loom noise.
Aerodynamic noise includes fan noise, gas turbine noise and exhaust noise of waste gas boiler.
Electromagnetic noise includes generator noise, transformer noise, etc.
Working in a noisy environment for a long time without taking any effective protective measures will inevitably lead to permanent irreparable hearing loss and even serious occupational deafness. Occupational deafness has been listed as one of the important occupational diseases at home and abroad. Strong noise will not only lead to deafness, but also have adverse effects on people's nervous system, cardiovascular system, digestive system and reproductive function. Particularly strong noise can also lead to nervous disorder, shock, and even life-threatening. Because noise is easy to cause psychological fear, shielding alarm signals is often an important synergistic factor that causes work-related injuries and deaths.
It is difficult for workers with occupational deafness to exchange views with others at work, which affects work efficiency; In daily life and social activities. I can't communicate my thoughts and feelings with my relatives or friends well, and I can't enjoy wonderful music and opera. Especially in old age, this situation is more serious and will cause great pain.