Environmental noise reduction device

Abstract

The invention relates to an environment-friendly noise reduction device, comprising a connection part and a noise reduction part connected with the connection part, a driving box and a noise reduction disc are arranged in the noise reduction part, an air bag is arranged in the driving box, and a plurality of first pull ropes are connected to the inner wall of the driving box , a number of push balls are bolted on the first pull cord, and a number of push balls are distributed around the airbag; the muffler disc includes an outer ring and an inner disc, the inner disc is rotatably connected in the outer ring, and the outer ring is provided with a number of radially arranged first mufflers The inner plate is provided with a number of second silencing holes that can face the first silencing holes, and the inner wall of the inner plate and the inner wall of the outer ring are provided with sound-absorbing materials; the wall of the drive box is provided with There are a number of through holes facing the push ball respectively, and a number of sound transmission tubes are connected to the connecting part. The sound transmission tubes are provided with a number of first branch pipes connected with the through holes and a second branch pipe connected with the first sound-absorbing hole; the inner plate A linkage mechanism is connected with the air bag. This solution makes the sound reflected in the closed sound-absorbing material, which improves the effect of noise reduction.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an environmental protection noise reduction device. Background technique [0002] With the rapid development of the national economy, environmental noise has become one of the public hazards of contemporary human life. As the largest developing country in the world, my country's environmental protection and governance is one of my country's important national policies. Anti-vibration and noise reduction has become an important content of environmental protection measures. [0003] Current noise reduction devices usually include sound-absorbing materials. Since the sound-absorbing materials are loose and porous, the sound will be reflected multiple times in the sound-absorbing materials, thereby reducing the energy of the sound and achieving the purpose of sound absorption. However, most of the sound-absorbing materials are in an open environment rather than clos...

AI Technical Summary

Problems solved by technology

However, most of the sound-absorbing materials are in an open environment rather than closed. Although the sound-absorbing materials can absorb a certain amount of noise, for louder noises, the sound will inevitably be reflected from the sound-absorbing materials to the outside world many times. environment, so that there is still a certain amount of noise in the external environment, so the effect of noise reduction is not very good

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