The use of Roots blower acoustic enclosure and the effect of users
General fan room can not achieve the effect of reducing fan noise, so blimp It plays a role: not only can it be used for Roots blower It can also be used to reduce the noise of all kinds of blower, induced draft fan, generator, air compressor, transformer, grinder, ball mill, motor, water pump, woodworking machinery, printing and other equipment. As the control fan of high noise workshop blimp It can effectively block the noise transmission of high noise equipment and reduce the impact of noise on the environment. But sometimes it will bring inconvenience to equipment maintenance, monitoring, pipeline layout and so on, and is not conducive to the heat dissipation of the covered device. Most of the ventilation facilities are needed to cool the air in the hood.
According to different requirements, blimp The wall is made of 1.5-2mm galvanized steel plate, aluminum plate and other metal materials. The sound insulation cover adopts modular design, which is convenient for transportation, suitable for field installation and maintenance. Doors / windows, lighting equipment, ventilation and heat exchange system can be installed according to different requirements, and various appearance colors can be painted according to requirements, blimp Generally, the sound insulation loss can be reduced by 10-30db. Sanyehong Roots blower The mode of "whole machine sound insulation" is adopted to ensure that the noise meets the standard, and has the overall advantages of easy unloading, installation and transportation.
because Roots blower There are certain design and manufacturing standards, and the state has certain standard requirements. The noise value of each type of blower should be controlled within a certain range. If it exceeds this range, it will be regarded as unqualified equipment quality. In the previous article, Hongguang fan has repeatedly mentioned the problem of noise solution. Even if some large fans are equipped with silencers, there is still strong noise, At this time, the best way is to install blimp (anechoic room), used in schools, hospitals, communities, etc Roots blower In order to solve the problem of noise pollution effectively, we should install an anechoic room.
In a large factory, if it is far away from the office area, it is not necessary to install noise reduction room, but there should be shielding equipment, such as simple shed, to avoid direct sunlight of the blower. Noise proof cover can effectively reduce noise, here small series of suggestions, such as you use a small model Roots blower For example, we suggest that you do not need to purchase the equipment of model 50 and 65 Sound insulation If you have special requirements for noise decibels, or use large fans, we recommend installing them blimp (anechoic room), can effectively reduce noise pollution.
I. customer's questions and suggestions
1、 Roots blower How much noise is it
The general noise is about 70 ~ 80dB.
2. Main causes of noise
Roots blower The noise is mainly composed of mechanical noise, aerodynamic noise, electromagnetic noise and so on. The aerodynamic noise is mainly intake and exhaust noise, and the exhaust is the largest. The mechanical noise is radiated from the casing, and the electromagnetic noise is generated by the motor. Roots blower Noise is the noise produced by these sources.
3. How to solve the noise problem
Generally, there are several methods to solve the problem of fan noise
1) the noise of casing and motor can be solved by installing sound insulation cover. The fan is placed in an independent fan sound insulation room, and sound absorption and sound insulation treatment are carried out in the fan room.
2) install a muffler outside the fan exhaust port, with built-in silencing insert, so that the noise can be continuously reduced through the special structure. The muffler is an effective measure to reduce the radiation at the inlet and outlet of aerodynamic equipment or to transmit noise along the pipe.
Louvers should be used on the outer floor as far as possible.
4) damping spring hanger damper is used for fan suspension.
5) conduct overall vibration isolation treatment for fan foundation.
2、 Effect and user experience
Sound proof cover of Roots blower After treatment, the noise at one meter of the fan is reduced from 100-104 DB to 76-79 dB, and the noise at plant boundary is reduced from 59-63 DB to 46 dB, which is close to the background value. Now the environment in the machine room has been improved obviously, and the workers can hear clearly.
The purpose of Roots blower noise enclosure and the effect of users after use: http://theoxfordjazz.com/xw/118.html
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