Characteristics and matching selection of sound insulation cover for Roots blower
Before introducing the sound insulation cover of Roots blower, the noise problem of Roots blower will be briefly introduced. Roots blower is a typical volumetric blower. According to the change of rotor volume, the mechanical energy and kinetic energy of gas increased by the main motor under pressure are very large, which is also the biggest disadvantage of roots blower. Due to the high requirements of the working environment, the general solution is to increase the sound insulation room and meet the requirements of environmental protection noise, and also greatly reduce the occurrence of occupational diseases.
1、 Features of acoustic enclosure
The noise is placed in the acoustic enclosure to block the noise from spreading outward. It is easy to install and disassemble, and can be designed according to the specific use requirements of noise source equipment, equipment operation conditions, ventilation and heat dissipation requirements. Sound insulation requirements can be designed according to user requirements and fan size.
2、 Effect of noise reduction
Sound insulation cover of Roots blower It is an effective measure to reduce high noise equipment. It can effectively block the noise transmission of high noise equipment and reduce the impact of noise on the environment. Sometimes it will bring inconvenience to equipment maintenance, monitoring, pipeline layout, and is not conducive to the heat dissipation of covered equipment. Most require ventilation to cool the air in the hood.
3、 Shape and material
Usually, Sound insulation cover of Roots blower The size needs to be configured according to the size of the motor model. The specific size of the sound insulation cover needs to be customized according to the approximate size of Roots blower. There is a certain production cycle. Users with purchase needs need to arrange procurement according to their actual working conditions, so as to avoid affecting the project progress.
In addition, the appropriate material and shape should be selected. The cover surface should be made of materials with sound insulation ability, the shape of the cover should be curved surface, its stiffness should be larger, and sound insulation should also be used. The equipment of sound insulation cover shall be kept at a certain distance, and the enclosure wall shall be light and thin, and the layered composite structure shall be selected.
4、 Internal structure
All welding seams in the sound insulation cover shall be free of sound leakage, and the contact part with the ground shall be sealed. Appropriate vibration reduction measures shall be taken between the machine and the sound insulation cover and between the ground or the engine base. Its surface should also be treated with sound absorption. At the same time, porous or fibrous sound-absorbing materials should be pasted, and the sound absorption coefficient should not be too small.
In addition, the enclosure of sound insulation enclosure shall be made of steel plate or aluminum plate. The enclosure enclosure shall be designed according to one standard, that is, easy to install and maintain, and can also be made into a detachable assembly structure. Some requirements such as ventilation and heat dissipation of sound source equipment shall be considered, Sound insulation cover of Roots blower At present, it is the only effective facility to reduce fan noise.
Features and matching selection of "roots blower acoustic enclosure" http://theoxfordjazz.com/xw/117.html
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