Workshop sound-absorbing wall

Abstract

The invention discloses a workshop sound-absorbing wall including a front pressing plate, a sound-absorbing cotton layer, sound insulation foam and a rear pressing plate; the front pressing plate, the sound-absorbing cotton layer, the sound insulation foam and the rear pressing plate are sequentially overlapped; the sound-absorbing cotton layer is wave shaped, a sound absorption cavity is respectively formed by the curved part of the sound-absorbing cotton layer and the front pressing plate and the sound insulation foam; and the front pressing plate is provided with a through hole communicated with the sound-absorbing cotton layer. The beneficial effects of the workshop sound-absorbing wall are that: during incidence of the indoor noise into the sound-absorbing wall, the indoor noise enters into the sound-absorbing wall by the porous front pressing plate, and passes through the cavity, the sound-absorbing cotton layer and the sound insulation foam, different frequency of noises generated by factory production can pass through different mesons to achieve the purpose of noise reduction, at the same time the internal cavity can effectively precipitate dust in the air, and the noise pollution and dust pollution can be simultaneously treated.

Description

technical field [0001] The invention belongs to the field of noise reduction, in particular to a workshop sound-absorbing wall. Background technique [0002] The traditional production of inoculant particles is a single piece of equipment, which is manually transported and screened (manually shoveled into the filter screen with a shovel), which is time-consuming and laborious, and the production efficiency is very low; the more advanced equipment is only the jaw crusher, which causes much dust. It cannot be collected, and it is difficult to collect the dust in the artificial screening environment, which increases the PM2.5 value of the surrounding environment, so it is wasteful and not environmentally friendly. [0003] Because in the casting process, the molten iron in the ladle has a high temperature of about 1400 degrees, if there is powder in the inoculant, it will be oxidized and burned on the surface during the process of adding molten iron, and the inoculation effect ...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is that noises of different frequencies cannot have a good sound-absorbing effect during factory production, and solve the problem that the existing sound-absorbing walls have poor sound-absorbing effects on low-frequency noises. At the same time, the existing sound-absorbing walls can only reduce , can not take into account the effect of dust reduction

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