Crusher is widely used in mining, metallurgy, chemical industry and other industries. The emergence of the crusher has solved the problem of material handling and *ly increased work efficiency. However, the noise problem of the crusher has also been troubled by the enterprise. The noise not only affects the physical and mental health of workers, but also often attracts complaints from surrounding residents.

　　Source of noise:　​

　　When the crusher is working, the belt conveyor drives the hammer to complete the material crushing. The noise generated during the working process is generally above 110dB (A). This noise value far exceeds the environmental protection regulations stipulated by the country. required standards.　　​

　　Noise solutions:　​

　　1. Reduce sound source noise: transform production technology and select low-noise equipment; improve mining machinery processing and assembly accuracy to reduce noise caused by mechanical vibration and friction; for high-pressure and high-speed airflow, reduce the pressure difference and flow rate, or change the airflow nozzle shape.　​

　　2. Control during the propagation process: Reasonably design the overall layout; use the addition of sound barriers to prevent the spread of noise, and use the directional characteristics of the sound source to control the noise, such as high-pressure boiler exhaust, blast furnace exhaust, oxygen generator exhaust, etc. The exhaust outlet is equipped with a silencer cover to reduce the impact on the environment.　　​

　　3. Protection of recipients: Provide personal protection to workers, such as wearing earplugs, earmuffs, helmets and other anti-noise supplies; rotate workers to shorten the working time of workers in high-noise environments; adopt noise reduction, sound absorption, and sound insulation , vibration isolation, vibration reduction and other measures.　　​

　　Commonly used noise reduction measures for crushers generally include the following:

​

　　1. Wrapping the drum with damping material can effectively reduce the noise by 10-15dB (A).　　​

　　2. Replace the lining plate of the construction waste crusher with a low-noise lining plate to reduce part of the impact noise.　　​

　　3. Add a sound insulation cover to the entire crusher to *ly control noise and block external noise radiation.

　　The noise generated by the crusher during operation causes * harm to the health of workers. In view of this situation, it is necessary to carry out sound insulation treatment. Before noise treatment is carried out, it is necessary to conduct on-site surveys, fully understand customer needs, and customize and reduce the noise. When reducing noise, special attention should be paid to the heat dissipation needs of the equipment. Whether it is damped and wrapped or a sound insulation cover is added, it will have a certain impact on the heat dissipation of the equipment. However, if the heat dissipation is poor, it will cause damage to the interior of the crusher. Parts have a large temperature rise, and coupled with stress and other effects, they are prone to deformation or even breakage. Therefore, it is necessary to rationally add heat dissipation equipment to ensure that the temperature inside the cover is balanced and does not affect the * of the equipment itself. life.