How to reduce the noise pollution of ball mill

Ball mill noise pollution is a serious problem for manufacturers of ball mill, noise on the staff, maintenance personnel health and the environment are very harmful. Through the in-depth research and analysis by Henan Zhengzhou Mining Machinery Co.,Ltd., draw the following summary, we are hoping this can provide beneficial help to everyone. 1. Ball mill noise source (1) Noise generated by the cylinder When the cylinder rotates, the mechanical noise produced by the mutual collision between the steel ball and the steel ball, the steel ball and the steel cylinder can reach 115 dBA or more, and the noise band is wider. (2) Motor and transmission machinery noise Electromagnetic noise generated by the motor operation, airflow noise generated by the fan. Motor noise and motor power and speed is proportional to the noise level is generally 90dBA-115dBA. Transmission machinery noise is mainly due to collisions between gears and friction between parts and resulting. 2. Ball mill noise control methods (1) Damping the sound insulation layer Use sound insulation materials to wrap up ball mill cylinder, thus reducing the cylinder noise. This method can generally reduce 5-10dBA, the effect is not ideal. (2) Sound insulation cover Use sound insulation cover to close up ball mill cylinder, blocking the noise pathways, thereby reducing the radiation of the barrel noise. This method is more effective, usually noise reduction value can reach about 20dBA. However, the installation of sound insulation cover makes maintenance and operation difficult. At the same time as the motor and transmission machinery enclosed in the noise enclosure, resulting in ventilation equipment, cooling difficulties, inspection, maintenance work is also very inconvenient. (3) Rubber lining instead of manganese steel lining Cylinder liner replaced by the original manganese steel liner rubber liner, can greatly reduce the impact noise between the ball and the cylinder, the noise reduction value of 12-15dBA, the effect is obvious, but there are still problems like the life of the rubber lining. The comparison results show that: The latter two methods have better noise reduction effect, to a certain extent, they have played a protective role on the health of workers and reduced the pollution of the environment to noise. But there are still some problems, such as cooling, ventilation, overhaul, liner service life, or urgent solution. How to find a reasonable and perfect solution that can effectively solve the problem of noise pollution, but also not derived from other problems, hoping to help find the solution manufacturers.