Roots blower pipeline noise reduction device
A Roots blower and pipeline technology, which is applied to components, mechanical equipment, machines/engines, etc. of pumping devices for elastic fluids, can solve the problems of large noise and wide radiation range of inlet and outlet pipelines, and achieve reduction Pollution and the effect of improving the factory boundary environment
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[0018] like figure 1 As shown, a Roots blower pipeline noise reduction device of the present invention includes a sound-absorbing box 1 and an internal sound-absorbing layer 3 wrapped outside the pipeline 2, and the internal sound-absorbing layer 3 is arranged inside the sound-absorbing box 1, A spacer cavity 4 is formed between the inner wall of the sound-absorbing box 1 and the inner sound-absorbing layer 3, and the sound-muffling box 1, the spacer cavity 4 and the inner sound-absorbing layer 3 together form a secondary sound-absorbing composite type structure.
[0019] The above-mentioned secondary noise-absorbing composite structural design has obvious sound-absorbing and noise-reducing effects. When the noise is radiated from the pipeline of the Roots blower, it first enters the internal sound-absorbing layer 3, and the internal sound-absorbing layer 3 decays. After part of the noise penetrates the internal sound-absorbing layer 3, it radiates to the sound-absorbing box ...
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