Multi-module impedance compound sound insulation plate and manufacturing method thereof

Abstract

The invention discloses a multi-module impedance compound sound insulation plate and a manufacturing method thereof. The method adopts a principle based on a Helmholtz resonator, and is characterized in that a shell is a panels made a rigid sound insulation material, and edges at one side are rolled to form a groove; the inner side of a damp sound insulation plate module groove is provided with a bilayer plate sound insulation structural plate or a bilayer plate sound insulation module protective layer, a sound sucking material, a protective fabric and a perforating plate. The manufacturing method comprises the following steps: according to different requirements of the sound insulation volume, respectively calculating a damp sound insulation plate module, a bilayer sound insulation structural module and a perforating plate resonant sound sucking structural module; adjusting the thickness and the density of each material in each layer structure; adjusting the dimension of each acoustic structure, thus ensuring that each layer structure of the product conforms to the quality standard of design requirements. The invention improves the environment adaptability of the sound insulation plate, can effectively ensure the service life in the moist environment, can improve the sound insulation volume to at least 10-15dB compared with like products, and simultaneously can carry out intensified design aiming at different noise frequency band through adjusting each material and acoustic structures, thus improving the noise decreasing effect.

Description

technical field [0001] The invention is suitable for noise control in various industrial and civil strong noise environments. Reduce the energy radiated from the noise source to the working environment through the fluid medium, reduce the noise sound pressure level, and improve the environmental acoustic environment. Background technique [0002] Mechanical equipment, including power equipment, rotating machinery, etc., plays a very important role in modern industry and civil use, bringing a lot of convenience to people's work and life and improving production efficiency. However, things are always divided into two. No matter how beautiful things are, they will inevitably leave some regrets. These mechanical equipment are no exception. While they bring convenience to human beings, they also bring people some troubles. is one of them. [0003] A large number of mechanical equipment produce strong noise during operation. Since most of this noise is non-faulty, it is quite di...

AI Technical Summary

Problems solved by technology

[0005] (1) Most of them adopt a double-plate structure, which means that there are two layers of sound insulation materials inside and outside, and the sound-absorbing material is added in the middle, and the structure is single.

[0006] (2) The sound insulation efficiency of the multilayer material sound insulation board is improved to a certain extent compared with the sound insulation board of the double board structure, but at present, the multilayer material sound insulation board mostly uses gypsum board as the main material of sound insulation, which makes the sound insulation board in the wet The structure is prone to damage in the environment

This soundproofing panel is only suitable for dry indoor environments

[0007] (3) The existing sound insulation board adopts the method of repeatedly stacking 2 to 3 kinds of acoustic materials to improve the sound insulation, the acoustic structure is not optimized, and the material utilization efficiency is low

[0008] (4) The installation of the existing sound insulation board adopts the bolt penetration installation, and the sound bridge will be generated after the installation, which will reduce the sound insulation performance

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