A high sound insulation fire door structure

Abstract

The utility model relates to a high sound insulation fireproof door structure, including door frame body and door leaf, door frame body includes the upper door frame along the horizontal direction is arranged with and the side door frame along the vertical direction symmetry is arranged in the upper door frame both sides, the lower end left and right sides of upper door frame along the vertical direction symmetry is provided with not less than one mounting groove, the upper end left and right sides of door leaf along the vertical direction symmetry is provided with the same number of mounting step part with mounting groove, and mounting step part can embed mounting groove, one side of mounting groove is provided with a sealing element, and the other side of mounting groove evenly distributes several sound absorption holes, and the inner wall of each sound absorption hole is equipped with fine steel wire mesh, and the bottom of upper door frame still is provided with first sound absorption cotton layer and second sound absorption cotton layer. The utility model sets up multiple sealing elements and first sound absorption cotton layer and second sound absorption cotton layer on door frame body, can seal the gap between door frame body and door leaf, and fills the composite fireproof sound insulation material in the door leaf, effectively improves the performance of sound insulation fireproof.

Description

Technical Field

[0001] This utility model relates to the field of soundproof door technology, and in particular to a high soundproof fireproof door structure. Background Technology

[0002] Protective doors are used in production or for applications where specific areas need protection. For quiet rooms requiring protection from noise and rooms where noise from within the room cannot spread outwards and disturb the surrounding environment, the airtightness and sound insulation performance of the protective door determine its quality. To meet these needs, various types of protective doors with sound insulation functions have appeared on the market. For example, Chinese utility model patent CN222501547U discloses a soundproof steel fire door, which includes a door frame body, two limiting frames fixedly connected to the two sides of the door frame body, each limiting frame having a sliding groove, two hinge pins connected to both sides of the door frame body, and two fire door bodies connected to the surfaces of multiple hinge pins. Foam sound insulation boards are fixedly connected inside both fire door bodies.

[0003] The fire door body is made of soundproof steel and contains foam sound insulation panels. However, this design has the following drawbacks: Firstly, although the sound generated indoors is reduced in intensity by the fire door body and sound insulation panels, the sound is not absorbed along its propagation path and will still travel out of the room. Secondly, there are gaps between the door frame and the fire door body, which allow sound to travel through these gaps, significantly reducing the sound insulation effect. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a high sound insulation fire door structure with strong sound insulation effect. Multiple mounting slots are set in the upper door frame, and a sealing element is set in each mounting slot. When the door is closed, it blocks the sound from propagating from the gap between the door frame body and the door leaf. Furthermore, a first sound-absorbing cotton layer and a second sound-absorbing cotton layer are set in the gap between the door frame body and the door leaf to effectively block the sound propagation.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A high sound insulation fire door structure includes a door frame body and a door leaf hinged to the door frame body. The door frame body includes an upper door frame arranged horizontally and side door frames symmetrically arranged on both sides of the upper door frame in a vertical direction. The lower left and right sides of the upper door frame are symmetrically provided with at least one mounting groove in a vertical direction. The upper left and right sides of the door leaf are symmetrically provided with the same number of mounting steps as the mounting grooves in a vertical direction. The mounting steps can be embedded in the mounting grooves. A sealing element is provided on one side of the mounting groove, and a plurality of sound-absorbing holes are evenly distributed on the other side of the mounting groove. The inner wall of each sound-absorbing hole is provided with fine steel wire mesh in a circumferential direction. The bottom of the upper door frame is also provided with a first sound-absorbing cotton layer and a second sound-absorbing cotton layer.

[0007] Furthermore, there are three mounting slots and three mounting steps. Both the mounting slots and the mounting steps are stepped in the vertical direction. The mounting slot includes an inner wall arranged in the vertical direction and a bottom wall arranged in the horizontal direction and perpendicularly connected to the upper end of the inner wall. The mounting step includes an outer wall arranged in the vertical direction and a top wall arranged in the horizontal direction and perpendicularly connected to the upper end of the outer wall.

[0008] Furthermore, the sealing element includes an airbag fixed to the inner sidewall and a wing fixedly connected to the airbag, and when the mounting step is embedded in the mounting groove, the wing abuts against the outer sidewall and top wall of the mounting step.

[0009] Furthermore, the first sound-absorbing cotton layer and the second sound-absorbing cotton layer are disposed between the mounting grooves on the left and right sides at the bottom of the upper door frame. The first sound-absorbing cotton layer is wrapped and fixed by the upper door frame, and the second sound-absorbing cotton layer is fixed to the upper door frame by a buckle.

[0010] Furthermore, both the door frame body and the door leaf are made of steel plate, and the front and rear door panels of the door leaf have different thicknesses.

[0011] Furthermore, the interior of the door leaf is filled with multiple layers of composite fireproof and soundproof material.

[0012] Furthermore, the front and rear door panels of the door are overlapped and fixed by riveting.

[0013] Furthermore, the bottom of the door leaf is welded with an inverted U-shaped backing, and the bottom of the door leaf is provided with two downward-facing mounting openings, each of which is equipped with a settlement sound insulation sealing strip.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] First, this utility model has multiple mounting slots on the left and right sides of the upper door frame, and a sealing element in each mounting slot. The same number of mounting steps are provided on the left and right sides of the upper end of the door leaf. After the door is closed, the mounting steps are inserted into the mounting slots, and the sealing element is located at the gap between the upper door frame and the door leaf to effectively block the transmission of sound. In addition, the sealing element also has the function of preventing fire expansion. Sound-absorbing holes that can reduce noise are also provided on the side wall of the mounting slot, which improves the sound insulation effect.

[0016] Secondly, a first sound-absorbing cotton layer and a second sound-absorbing cotton layer are installed on the upper door frame and the side of the side door frame opposite to the door leaf. When the sound is emitted during the closing process and the sound is transmitted indoors and outdoors after the door is closed, the sound is weakened when it passes through the gap between the door frame body and the door leaf, which also effectively blocks the transmission of sound.

[0017] Finally, the door leaf and door frame are made of steel plates, and the door leaf is made of multi-layer composite fireproof and soundproof material, which has the properties of sound insulation, fireproof and heat insulation. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of a high sound insulation fireproof door structure according to this utility model.

[0019] Figure 2 This is a left-side sectional view of a high sound insulation fireproof door structure according to this utility model.

[0020] Figure 3 This is a top sectional view of a high sound insulation fireproof door structure according to this utility model.

[0021] Figure 4 This is a partially enlarged schematic diagram of the door frame body of this utility model.

[0022] Figure 5 This is a partially enlarged schematic diagram of the mounting groove of this utility model. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0024] like Figures 1 to 5As shown, this embodiment provides a high sound insulation fire door structure, including a door frame body 1 and a door leaf 2 hinged to the door frame body 1. The door frame body 1 includes an upper door frame 11 arranged in the horizontal direction and side door frames 12 symmetrically arranged on both sides of the upper door frame 11 in the vertical direction. The lower left and right sides of the upper door frame 11 are symmetrically arranged with at least one mounting groove 111 in the vertical direction. The upper left and right sides of the door leaf 2 are symmetrically arranged with the same number of mounting steps 21 as the mounting grooves 111 in the vertical direction. The mounting steps 21 can be embedded in the mounting grooves 111. A sealing element 3 is provided on one side of the mounting groove 111, and a plurality of sound-absorbing holes 112 are evenly distributed on the other side of the mounting groove 111. The inner wall of each sound-absorbing hole 112 is provided with a fine wire mesh in the circumferential direction. The bottom of the upper door frame 11 is also provided with a first sound-absorbing cotton layer 113 and a second sound-absorbing cotton layer 114. The fine wire mesh is provided to prevent the sound-absorbing cotton from leaking out from the sound-absorbing holes 112 and affecting the overall aesthetics.

[0025] The porosity of the sound-absorbing holes 112 is generally suitable between 20% and 40%, and the size of the holes and the spacing between them need to be designed according to the different sound insulation applications. The smaller the hole size, the better the sound attenuation effect for low-frequency sounds; the larger the hole size, the better the sound attenuation effect for high-frequency sounds. At the same time, the designed sound-absorbing holes 112 also slow down heat conduction to a certain extent, which can improve the fire resistance and heat insulation performance of the door frame body 1.

[0026] In this embodiment, there are three mounting grooves 111 and three mounting steps 21. Both the mounting grooves 111 and the mounting steps 21 are stepped in the vertical direction. The mounting groove 111 includes an inner sidewall 111a arranged in the vertical direction and a bottom wall 111b arranged in the horizontal direction and perpendicularly connected to the upper end of the inner sidewall 111a. The mounting steps 21 include an outer sidewall 21a arranged in the vertical direction and a top wall 21b arranged in the horizontal direction and perpendicularly connected to the upper end of the outer sidewall 21a.

[0027] In this embodiment, the sealing element 3 adopts a composite fireproof EPDM sealing strip, including an airbag 31 fixed on the inner sidewall 111a and a wing 32 fixedly connected to the airbag 31. It has the effect of two sealing strips and also has fireproof expansion capability. When the mounting step 21 is embedded in the mounting groove 111, the wing 32 abuts against the outer sidewall 21a and top wall 21b of the mounting step 21, which can effectively block the sound waves from propagating from the edge of the door leaf 2 and the gap between it and the door frame body 1.

[0028] In this embodiment, the first sound-absorbing cotton layer 113 and the second sound-absorbing cotton layer 114 are disposed at the bottom of the upper door frame 11 between the mounting grooves 111 on the left and right sides. The first sound-absorbing cotton layer 113 is wrapped and fixed by the upper door frame 11, and the second sound-absorbing cotton layer 114 is fixed to the upper door frame 11 by a buckle 115. A sound-absorbing cotton layer is also disposed on the side of the side door frame 12 opposite to the door leaf 2. In order to absorb the sound waves passing through the gap between the door frame body 1 and the door leaf 2, it also plays the role of blocking sound.

[0029] In this embodiment, both the door frame body 1 and the door leaf 2 are made of steel plates, which are formed by bending and assembling steel plates. The front and rear door panels of the door leaf 2 have different thicknesses to prevent the resonance of sound waves.

[0030] In this embodiment, the interior of the door leaf 2 is filled with a multi-layer composite fireproof and soundproof material 21, which is made of ceramic fiber board and glass fiber cotton, effectively absorbing and converting sound waves, while ensuring that the door leaf 2 has excellent fireproof and heat insulation performance.

[0031] In this embodiment, the front and rear door panels of door leaf 2 are connected by overlapping and fastening, and fixed by riveting in a welding-free manner, which is fast and environmentally friendly.

[0032] The soundproof hinge 4, which adopts an adjustable heavy-duty flat-joint installation method, avoids the need for mounting holes between the door frame body 1 and the door leaf 2, preventing sound waves from passing through the mounting holes. At the same time, it facilitates the adjustment of the gap between the door frame body 1 and the door leaf 2 in the vertical and horizontal directions, ensuring that the gap between the door frame body 1 and the door leaf 2 is within a reasonable range.

[0033] Lock 5 is a special soundproof lock with a locking and tightening function, which ensures that when the door leaf 2 is closed, it fully contacts and compresses the sealing strip 3, thus ensuring the sealing performance of the door.

[0034] In this embodiment, the bottom of the door leaf 2 is welded with an inverted U-shaped backing. The bottom of the door leaf 2 is provided with two downward-facing mounting openings 22. Each mounting opening 22 is provided with a settling sound insulation sealing strip 23 to block sound waves from propagating from the gap between the door leaf 2 and the ground.

[0035] The above description is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the scope of the present utility model patent application and the description of the utility model shall still fall within the scope of the present utility model patent.

Claims

1. A high sound insulation fireproof door structure, comprising a door frame body and a door leaf hinged to the door frame body, characterized in that: The door frame body includes an upper door frame arranged horizontally and side door frames symmetrically arranged on both sides of the upper door frame in a vertical direction. The lower left and right sides of the upper door frame are symmetrically arranged with at least one mounting groove in a vertical direction. The upper left and right sides of the door leaf are symmetrically arranged with the same number of mounting steps as the mounting grooves in a vertical direction. The mounting steps can be embedded in the mounting grooves. A sealing element is provided on one side of the mounting groove, and a plurality of sound-absorbing holes are evenly distributed on the other side of the mounting groove. The inner wall of each sound-absorbing hole is provided with fine steel wire mesh in a circumferential direction. The bottom of the upper door frame is also provided with a first sound-absorbing cotton layer and a second sound-absorbing cotton layer.

2. The high sound insulation fire door structure according to claim 1, characterized in that: The number of mounting slots and mounting steps is three in each direction. Both the mounting slots and mounting steps are stepped in the vertical direction. The mounting slot includes an inner wall arranged in the vertical direction and a bottom wall arranged in the horizontal direction and perpendicularly connected to the upper end of the inner wall. The mounting step includes an outer wall arranged in the vertical direction and a top wall arranged in the horizontal direction and perpendicularly connected to the upper end of the outer wall.

3. The high sound insulation fire door structure according to claim 2, characterized in that: The sealing element includes an airbag fixed to the inner sidewall and a wing fixedly connected to the airbag. When the mounting step is embedded in the mounting groove, the wing abuts against the outer sidewall and top wall of the mounting step.

4. The high sound insulation fire door structure according to claim 3, characterized in that: The first sound-absorbing cotton layer and the second sound-absorbing cotton layer are disposed between the mounting slots on the left and right sides at the bottom of the upper door frame. The first sound-absorbing cotton layer is wrapped and fixed by the upper door frame, and the second sound-absorbing cotton layer is fixed to the upper door frame by a buckle.

5. The high sound insulation fire door structure according to claim 1, characterized in that: Both the door frame and the door leaf are made of steel plate, and the front and rear door panels of the door leaf have different thicknesses.

6. The high sound insulation fire door structure according to claim 5, characterized in that: The interior of the door is filled with multiple layers of composite fireproof and soundproof material.

7. The high sound insulation fire door structure according to claim 6, characterized in that: The front and rear door panels of the door are overlapped and fixed by riveting.

8. The high sound insulation fire door structure according to claim 7, characterized in that: The bottom of the door leaf is welded with an inverted U-shaped backing. The bottom of the door leaf has two downward-facing mounting openings, and each mounting opening is equipped with a settlement sound insulation sealing strip.

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