Sound insulation construction process

The decoration of the home theater area should be soundproofed and sound-absorbing, and it needs the best effect. Actually, it is quite difficult, and it is necessary to master certain skills in the processing. Let's take a look at the sound insulation construction process and the best materials for sound insulation . Let's take a look.

Soundproof construction process

The most basic method of noise insulation is to strengthen the weaker part first. The key to sound insulation measures is to obtain a balance. Taking the concrete structure of the steel plate as an example, the sound insulation effect of concrete walls can reach -50dB, and the sound insulation effect of windows can reach -25dB. . Eliminating the gap between the two is the purpose that sound insulation construction needs to achieve. Even if you increase the soundproofing effect of the surrounding walls to -60dB and take any measures against the original windows, the sound insulation effect of the entire room is still only -25dB. Like a wooden bucket, missing one piece, the depth of water that the bucket can hold is determined by the shortest board. Before the soundproofing measures are taken in the home audio-visual area, we must carefully analyze where the sounds have run away. Although measures must be taken for the walls and the ground, do not forget the soundproofing of doors and windows, which is equivalent to the shortest board of the barrel.

First of all, we need to improve the sound insulation of doors and windows during construction.

Double-glazed windows are usually used to preserve existing windows and add a window; or to remove the original window and re-install a new standard glass design. The same requirements are imposed on the thickness and resonant frequency. Under normal circumstances, double-glazed windows are spaced from 20cm to 30cm; to achieve the same soundproofing effect as a concrete wall, it is best to have more than 30cm spacing between double glazings. If some sound-absorbing measures are taken during this interval, it will be even better. Perfect. This correct construction can guarantee -50dB sound insulation effect of the construction space.

The worst soundproofing effect is the number of doors in general home renovations. There is a small gap between the door and the door with plywood nails. The sound insulation effect is generally -25dB to -35dB, but at most -15dB; the effect is better. , is the kind of iron door used in the listening room, but rarely seen in residential houses; now an increasing number of double-layer anti-theft door also has a good sound insulation effect; if you want to transform the plywood door into a soundproof door, you should consider the sound insulation of the door. The characteristics should be consistent with the soundproofing effect of the wall; if it is your own hands to improve the airtightness of the door, you can paste some door seals or sponges and the like to reduce the distance between the frames and the sound insulation will be improved.

Secondly, enhance the sound insulation of the wall during construction . The load-bearing walls of general household residential buildings are made of steel plate concrete or solid brick structures, and the sound insulation effect is good. The problem of poor sound insulation effect is generally found in light hollow bricks or gray plastic boards used in partition walls, and the sound insulation effect is only -25 dB to -30 dB; Most home theaters have one to two wall structures. If no measures are taken, the air vibrations in the hollow bricks can cause resonance in the walls, which is very detrimental to the sound quality. The measures that can be taken in the construction are to remove the original walls and recreate the sound insulation walls, or to keep the original walls and add a soundproof wall. Generally, the former method is better. Gray glue board can be installed on both sides of the wall, and the glass fiber material is filled in between, and the sound insulation effect will be much better.

If you are very concerned about the space of the room, you can also choose the material of the sound insulation board on the market, that is, the lead plate, which can be said to be the best sound insulation material , but compared to the sound insulation construction scheme mentioned above, this material achieves the same sound insulation effect. The cost is more than doubled.

Another method of soundproofing is the room-in-room, in which sound insulation measures are applied to walls, floors and ceilings, and a room is constructed in the room . This is the structure adopted by all recording studios. The sound insulation effect of this construction method is -50dB. To make the interior and exterior walls completely isolated from each other, no sound is transmitted. In such a structure, it is necessary to use isolation devices. The construction is complicated and power is not allowed. , Audio equipment, telephone air conditioners and other sockets have installation gaps, construction is more difficult, the manufacturing cost up to more than 10,000 yuan per square meter.

The above materials on the soundproof construction process and the best soundproofing effect are briefly introduced here, and we hope to help you. For more information, please visit this website. Stay tuned.

Bedroom soundproofing

Angle Valves

Globe Valves and angle valves are designed for throttling or regulating flow in commercial and industrial applications. Bronze, cast iron, or cast ductile iron materials. Threaded, flanged, or solder end connections.

Angle valves for use in commercial and industrial applications. Typical services include hot and cold water, HVAC, steam, compressed air, gas and other general utility services.
Vacuum angle valve is used for turn on or shut off the airflow in the vacuum pipeline, the applicable media is air and non-corrosive gases.
It has two structures, one is angle type and another is a 3-way type within an ISO-KF or ISO-F various flange end pre-pump port.
a) Small diameter (≤DN50) valve body are precision investment casting.
b) Large diameter (> DN50) valve body are molding shaped seamless steel or steel plate.
c) Bellows sealed structure can withstand 150ºCtemperature, metal sealed structure can withstand 450ºCtemperature.
d) Can install on any position to control the airflow in the vacuum pipeline, as an on-off valve purpose

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