Roots blower is a double rotor compression machine. The double rotors and shafts are parallel to each other, and the rotor is combined with the impeller and shaft. There is a small gap between impellers and between impellers and housings, so there is no direct contact. The advantage of double rotors is that the motor rotates at the opposite speed to the synchronous gear, and the exhaust gas cannot return to the suction chamber due to the mutual cooperation of the impellers, the inflow of the blower, and the isolation of the air exhaust.
Compared with centrifugal blower, Roots blower has the advantages of simple structure, no breathing, high pressure, small flow resistance and stable air supply, but it has low efficiency and large noise. The inlet air temperature of Roots blower shall not exceed 40 ℃, the solid particle content of gas shall not be lower than 100mg/m3, and the particle diameter shall not be less than half of the minimum working interval of each relative moving part in the cylinder. However, if microporous aeration equipment is used, the problem of aeration membrane blockage shall also be considered.
Roots blower silencer/muffler is developed on the basis of sound barrier principle. This type of silencer has excellent acoustic performance and aerodynamic performance; The structure is reasonable and easy to install. It is a kind of honeycomb muffler with large air volume and resistance. The resistance section adopts the form of multi chamber resistant adhesive straight pipe channel and cross shaped sound absorber, thus ensuring sufficient noise reduction in a wide band. The silencer structure is composed of many parallel unit silencing tubes arranged, and porous sound absorbing materials are filled between silencing tubes. In order to reduce the radiated sound generated by the shell wall vibration excited by air flow, stiffeners are set on the shell. The forms of fan silencer, centrifugal fan silencer and blower and induced draft fan silencer are all based on the principle of resistive sound absorption and noise reduction with good effects on medium and high frequency broadband characteristics, the principle of resistant sound absorption and noise reduction with good effects on low, medium frequency and pulsating characteristics, and the principle of micro perforated silencer and impedance composite silencer.
Roots blower silencer is also called silencer. According to different structures, it can be divided into circular and rectangular silencers. The silencer we often use is mainly a round silencer, which has obvious noise reduction effect.
In addition to using the silencer of Roots blower to reduce noise, a noise chamber can also be installed. The multi-function noise chamber can effectively reduce the noise of roots blower. In addition, it can also work on the external computer screen to complete various functions of the blower.
According to the size of roots blower, noise reduction equipment of roots blower is equipped. If there are special requirements for the noise of Roots blower when purchasing, we should tell the manufacturer of Roots blower the number of decibels we need to adjust the noise. I'll give you a reference value first! There is no sound below 40 decibels, 60 decibels to 80 decibels is usually the noise of vehicles, 80 decibels to 100 decibels is usually the noise of nightclubs. Usually 70 decibels to 100 decibels will affect our normal life.
Word tag: Roots blower
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