Soundproof door for acoustical laboratory

Abstract

The invention relates to a soundproof door for an acoustical laboratory. The soundproof door comprises a door body, and a buffer layer composed of a rubber elastic body is arranged on the contact surface of the outer side of the door body and a door plate. Sound-absorbing layers composed of PET fibers are arranged on the two sides of the door body, and a plurality of first sound-absorbing convex strips and a plurality of second sound-absorbing convex strips are arranged on the exteriors of the sound-absorbing layers. The section of each first sound-absorbing convex strip is of a semicircle structure, the section of each second sound-absorbing convex strip is of an inverted-trapezoid structure, and the first sound-absorbing convex strips, the second sound-absorbing convex strips and the sound-absorbing layers are of an integrated structure. The first sound-absorbing convex strips and the second sound-absorbing convex strips are arranged at intervals and evenly distributed at the sound-absorbing layers. The door body is internally provided with a reinforcing member which comprises three reinforcing steel plates, and the section of each reinforcing steel plate is of an S-shape structure. The soundproof door is simple in structure, high in strength and good in soundproof effect.

Description

technical field [0001] The invention relates to a door, in particular to a sound insulation door used in an acoustic laboratory. Background technique [0002] The acoustic laboratory is a special laboratory for simulating various ideal sound field conditions and measuring various parameters to study the law of sound wave propagation and the sound absorption, sound insulation and noise reduction performance of building materials, building structures, and building components . It is mainly used to simulate the diffusion sound field, free sound field and the propagation of sound waves in the pipeline, etc. There are reverberation chambers, anechoic chambers, sound insulation rooms, etc. The door used in the sound insulation room of the acoustic experiment in the prior art is often simply made of sound-absorbing panels, and there are small gaps between the door and the door frame. Occasionally, there will be sound leakage during the test, and its strength and sound insulation e...

AI Technical Summary

Problems solved by technology

In the prior art, the doors used in sound-proof rooms for acoustic experiments are often simply made of sound-absorbing panels, and there are small gaps between the door and the door frame. Occasionally, there will be sound leakage during the test, and its strength and sound insulation effect are often not good.

Images