subject: Silencer Uses To Reduce Noise Of Ball Mill [print this page] The mill noise is the impact on the metal from the roller ball and cylinder wall liners and processing materials, machinery noise. The sound along the liner, the cylinder wall, expected out to external radiation, including: the crash between the ball and the ball, the ball and lined with steel plates, the crash of the material, the friction sound. There is other equipment operation, the noise transmission (gearbox and motor) vibration.
The size of the mill noise and diameter of the ball mill, speed and nature of the material sand block. The basic noise is a steady-state noise, wide bandwidth, low, medium and high frequency components of sound energy are very high, and the larger the diameter, the low frequency components stronger.
Energy-saving ball mill noise control measures to take the following five:
(1) increase the sound insulation cover. Steel frame with a thin steel plate enclosure, wipe the damping layer and fill in the ultra-fine glass wool or other sound-absorbing material, the mill closed. Produce large amounts of heat in the ball mill operation, attention must be given to solve the cooling and to facilitate equipment maintenance and other matters within the cover.
(2) Instead of manganese steel liner with rubber liner, the noise level can be reduced by9dB (A), the spectral characteristics of high frequency into a low-frequency.
(3) To set the elastic layer. Placement of heat-resistant soft rubber pad between the inner surface of the liner of ball mill drum, in order to prevent the soft rubber pad overheating, laying in the ball mill liner and soft rubber pad thickness 10 15mm industrial felt, enable the mill noise reduction to below the allowable standard.
(4) Sound insulation layer bandaging in the drum wall. Dressing layer of 50mm thick industrial felt in a ball mill drum wall, 1.smm thick steel plate armor, with bolts fixed in the drum wall, the actual sound insulation value of about 12dB (A). If the drum at both ends to do the same, does a good job sealing the seams of the drum wall dressing and acoustic effects may be increased.
(5) The design of sound insulation between. When conditions permit, will focus on ceramic ball mill to the specialized mill room, mill room into a dedicated sound insulation between the effect would be more sound insulation to cover better, but attention must be paid the mill running in the monitor, indoor cooling and maintenance problems.
