Steel sound proof door

Abstract

The invention relates to a steel sound proof door which is extensively used for occasions where noise needs to be controlled, such as a studio, a theater, a broadcasting studio, a recording studio, a cinema, a sound damping chamber, an audiometric room, a machinery room, a sound proof cover and the like. A door leaf is arranged on a door frame through a swing-up type hinge, the door frame is welded on an embedded part of a door opening, cement mortar is poured into a gap between the door frame and the door opening, and a built-in type sealing threshold is adopted; the door frame is formed by spot-welding a front frame plate and a rear frame plate, the door leaf is formed by spot-welding a front leaf plate and a rear leaf plate into a whole, no steel structural frame is arranged in the door leaf, sound proof materials, sound absorption materials and damping materials are filled in the door leaf, magnetic sealing strips and sponge sound absorption strips are arranged at an intersected crack between the door frame and the door leaf, and the door frame and the door leaf can be overlapped with a door frame or a door leaf with a same structure to form the sound proof door with higher sound proof factor. The steel sound proof door has the advantages of reasonable structure, hermetical seal, easy opening and closing, attractive appearance, no cracking and no lower threshold; and the sound proof factor can be divided into a plurality of levels from 35 db to 55 db.

Description

technical field [0001] The invention relates to a sound insulation door, in particular to a steel sound insulation door. Background technique [0002] Acoustic doors are widely used in studios, theaters, broadcasting studios, recording studios, cinemas, anechoic rooms, audiometry rooms, machine rooms, sound insulation enclosures and other occasions that require noise control. [0003] Soundproof doors are divided into wooden, steel-wood and steel. Wooden soundproof doors are generally covered with a layer of sound-absorbing material on the outer surface with leather and other decorative materials. Limited by the specific gravity of wood, the sound insulation is generally not high, generally only It is more than 20 decibels, and it is easy to deform. Although the sound insulation of the steel-wood structure sound insulation door has been improved, the sealing of the door gap is not easy to handle, it is easy to crack, and it is not easy to operate. Steel soundproof doors ge...

AI Technical Summary

Problems solved by technology

Although the sound insulation of the steel-wood structure sound insulation door has been improved, the sealing of the door gap is not easy to handle, it is easy to crack, and it is not easy to operate

Steel soundproof doors generally use steel plates as the inner and outer surfaces, and the interior is filled with soundproof materials and sealed with rubber strips. However, due to its unreasonable structure, there is a rigid connection between the inner and outer surfaces of the door leaf, and the rubber seal not only requires greater operating strength. , there is also a need for a lower threshold seal, which is not conducive to the entry and exit of personnel, equipment and vehicles, and the sound insulation is also limited

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