Combined door bottom sealing strip for fireproof and soundproof door
Through the design of the combined door bottom sealing strip, the silicone fire-resistant and sound-insulating sealing strip is used to expand and seal at high temperatures, which solves the problem of fire door gap isolating smoke at high temperatures and realizes the effective sealing and sound insulation performance of the fire-resistant and sound-insulating door.
Patent Information
- Application Number
- CN202422630303.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The door gaps of existing fire doors cannot effectively isolate toxic smoke at high temperatures, especially the bottom structure of the door panel is difficult to strike a balance between ensuring opening and closing properties and fire and sound insulation performance.
A combined door bottom sealing strip is used, including the first and second silicone fire-resistant and sound-insulating sealing strips. The first sealing strip is stacked on the fire-facing side and the second sealing strip is on the fire-resistant side. The thickness increases successively, combined with U-shaped wear-resistant parts and sound insulation materials to form a sealing structure.
The bottom of the fireproof and soundproof door can be effectively sealed at high temperature to prevent or slow down the entry of toxic smoke into the audiometry room, thus meeting the sound insulation requirements and having simple structure and low cost.
Smart Images
Figure CN223330469U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fireproof and soundproof doors, in particular to a combined door bottom sealing strip for fireproof and soundproof doors. Background Art
[0002] A key technical indicator in fire door design is whether the door's gap can effectively isolate and block toxic smoke when temperatures reach a certain level. Therefore, fire-resistant sealing strips are typically installed around the perimeter of fire doors to expand in the presence of high temperatures. However, the sound insulation performance of conventional fire-resistant sealing strips generally fails to meet the sound insulation requirements of audiometric rooms, while the acoustic and fire-resistant sound-insulating adhesive strips commonly used in audiometric room doors lack the ability to expand in the presence of fire. Consequently, many current audiometric room doors lack sufficient high-temperature smoke insulation performance. This is particularly true of the door panel's bottom structure, which must ensure both proper opening and closing while maintaining fire and sound insulation performance, often presenting a design challenge for fire-resistant soundproof doors. Utility Model Content
[0003] In response to the problems existing in the above-mentioned prior art, the utility model provides a combined door bottom sealing strip for fireproof and soundproof doors, which can meet the needs of sealing the bottom of fireproof and soundproof doors and isolating sound. In the event of a fire, the bottom of the fireproof and soundproof door can be sealed by the expanded fireproof sealing strip, thereby effectively preventing or slowing down the entry of toxic smoke into the audiometry room.
[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is as follows:
[0005] A combined door bottom sealing strip for a fireproof and soundproof door is embedded in the bottom of the door panels on both sides of the fireproof and soundproof door, and a fireproof and soundproof material is provided between the two door panels; the combined door bottom sealing strip includes a first sealing strip and a second sealing strip, wherein:
[0006] The first sealing strip is provided on the inner bottom side of the fire-facing door panel and includes a stacked fireproof sealing strip and a first soundproof sealing strip, wherein the first soundproof sealing strip is close to the ground or the door threshold;
[0007] The second sealing strip is arranged on the inner bottom side of the back-fire side door panel and abuts against the side of the first sealing strip, and includes a second sound insulation sealing strip, the bottom end of the second sound insulation sealing strip is flush with the bottom end of the first sound insulation sealing strip.
[0008] As a further elaboration of the above technical solution:
[0009] In the above technical solution, the thickness of the fireproof sealing strip is between the thickness of the first sound insulation sealing strip and the second sound insulation sealing strip, and the thickness of the second sound insulation sealing strip is greater than the thickness of the first sound insulation sealing strip.
[0010] In the above technical solution, the first sound insulation sealing strip and the second sound insulation sealing strip are both silicone fire-resistant sound insulation sealing strips.
[0011] In the above technical solution, an inward-concave groove is formed at the bottom of the fireproof and soundproof door, and a U-shaped wear-resistant part that can slide along the height direction of the door panel is embedded in the groove. The first sealing strip and the second sealing strip are arranged in the U-shaped wear-resistant part along the thickness direction of the fireproof and soundproof door, and one side wall thereof is respectively against the inner wall of the U-shaped wear-resistant part, and the sound insulation material extends into the U-shaped wear-resistant part and is against the upper ends of the first sealing strip and the second sealing strip.
[0012] Compared with the prior art, the present invention has the following beneficial effects: by providing the first sound insulation sealing strip and the second sound insulation sealing strip, the use requirements of sealing the bottom of the fireproof sound insulation door and isolating the sound volume can be met; by arranging the stacked fireproof sealing strip and the first sound insulation sealing strip on the fire-facing side, when the temperature on the fire-facing side rises and before the first sound insulation sealing strip melts, the expanded fireproof sealing strip can be used to seal the bottom of the fire-facing side of the fireproof sound insulation door, thereby effectively preventing or slowing down the entry of toxic smoke in the gas into the audiometry chamber; the combined sealing strip group has a simple structure, is easy to assemble, and has a low production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural diagram of the utility model;
[0014] Figure 2 This is a schematic diagram of the application structure of this embodiment on a fireproof and soundproof door.
[0015] In the figure: 10, door panel; 20, first sealing strip; 21, fireproof sealing strip; 22, first sound insulation sealing strip; 30, second sealing strip; 31, second sound insulation sealing strip; 40, U-shaped wear-resistant part; 50, sound insulation material; 60, floor or door sill; d1, thickness of the fireproof sealing strip; d2, thickness of the first sound insulation sealing strip; d3, thickness of the second sound insulation sealing strip. DETAILED DESCRIPTION
[0016] The present invention will be further described in detail below with reference to the accompanying drawings.
[0017] The embodiments described with reference to the accompanying drawings are illustrative and intended to explain the present application, and should not be construed as limiting the present application. In the description of this application, it should be understood that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or to implicitly specify the number of the technical features referred to. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this application, "several" and "a plurality" mean two or more, unless otherwise specifically defined. In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. A person skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. In this application, unless otherwise specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them. Furthermore, "above," "above," and "above" a first feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher level than the second feature. "Below," "below," and "below" a first feature may include the first feature being directly below or diagonally below the second feature, or simply indicate that the first feature is at a lower level than the second feature.
[0018] like Figure 1 As shown, a combined door bottom sealing strip for a fireproof and soundproof door is embedded in the bottom of the door panels 10 on both sides of the fireproof and soundproof door, and a fireproof and soundproof material 50 is provided between the two door panels 10; the combined door bottom sealing strip includes a first sealing strip 20 and a second sealing strip 30, wherein:
[0019] The first sealing strip 20 is provided on the inner bottom side of the fire-facing door panel 10 and includes a stacked fireproof sealing strip 21 and a first soundproof sealing strip 22 . The first soundproof sealing strip 22 is close to the ground or the door threshold 60 .
[0020] The second sealing strip 30 is arranged on the inner bottom side of the non-fire side door panel 10 and abuts against the side of the first sealing strip 20 , including a second sound insulation sealing strip 31 . The bottom end of the second sound insulation sealing strip 31 is flush with the bottom end of the first sound insulation sealing strip 22 .
[0021] According to a large number of tests, silicone fire-resistant sound insulation sealing strips can withstand high temperatures of about 300°C. Commonly used fire-resistant sealing strips begin to expand when the temperature reaches 199°C. When the temperature on the fire-facing side of the fire-resistant sound insulation door reaches 1000°C, the temperature on the back-facing side is only about 200°C. Therefore, when the temperature on the fire-facing side of the fireproof and soundproof door reaches 199° C., the fireproof sealing strip 21 will expand and press the unmelted first soundproof sealing strip 22 against the ground or the threshold 60. When the temperature continues to rise, the first soundproof sealing strip 22 melts and adheres the bottom of the expanded fireproof sealing strip 21 to the ground or the threshold 60 and the second soundproof sealing strip 31, forming a tight fire and smoke barrier, thereby effectively sealing the bottom of the fireproof and soundproof door and preventing or slowing down the entry of toxic smoke into the audiometry chamber. In normal use, the sound insulation material 50 and the fireproof sealing strip 21 will press the first soundproof sealing strip 22 and the second soundproof sealing strip 31 against the ground or the threshold 60 to seal the bottom end of the door panel 10, thereby meeting the sound insulation requirements of the audiometry chamber.
[0022] Furthermore, the thickness d1 of the fireproof sealing strip 21 is between the thickness d1 of the first sound insulation sealing strip 22 and the thickness d3 of the second sound insulation sealing strip 31 , and the thickness d3 of the second sound insulation sealing strip 31 is greater than the thickness d2 of the first sound insulation sealing strip 22 .
[0023] Furthermore, the first sound insulation sealing strip 22 and the second sound insulation sealing strip 31 are both silicone fire-resistant sound insulation sealing strips.
[0024] It is understandable that the temperature of the door panel 10 on the back side is generally relatively low during a fire. Therefore, the bottom seal of this side can be sealed with only a silicone fire-resistant sealing strip. Moreover, since the silicone fire-resistant sealing strip has a good sound insulation and blocking effect, the use of a thicker second sound insulation sealing strip 31 in combination with the fireproof and soundproof door can better isolate external sounds, meeting the sound insulation and fire and smoke isolation requirements of the audiometry room. The combined sealing strip assembly has a simple structure, is easy to assemble, and has a low production cost.
[0025] Further, such as Figure 2As shown, a concave slot is formed at the bottom of the fireproof and soundproof door, in which a U-shaped wear-resistant part 40 that can slide along the height direction of the door panel 10 is embedded. The first sealing strip 20 and the second sealing strip 30 are arranged in the U-shaped wear-resistant part 40 along the thickness direction of the fireproof and soundproof door, and one side wall thereof respectively abuts against the inner wall of the U-shaped wear-resistant part 40. The sound insulation material 50 extends into the U-shaped wear-resistant part 40 and abuts against the upper ends of the first sealing strip 20 and the second sealing strip 30.
[0026] In this embodiment, an adjustment plate made of sound insulation material is provided on the inner side of the U-shaped wear-resistant part 40 in the slot. When in use, its height can be adjusted according to the actual situation of the ground or the threshold 60 to ensure that the bottom end of the U-shaped wear-resistant part 40 maintains an appropriate distance therefrom, and it can also provide a certain deformation space for the fireproof sealing strip 21 when it expands due to heat.
[0027] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A combined door bottom sealing strip for a fireproof and soundproof door, embedded in the bottom of the door panels on both sides of the fireproof and soundproof door, with fireproof and soundproof material provided between the two door panels; characterized in that: The combined door bottom sealing strip comprises a first sealing strip and a second sealing strip, wherein: The first sealing strip is provided on the inner bottom side of the fire-facing door panel and includes a stacked fireproof sealing strip and a first soundproof sealing strip, wherein the first soundproof sealing strip is close to the ground or the door threshold; The second sealing strip is arranged on the inner bottom side of the back-fire side door panel and abuts against the side of the first sealing strip, and includes a second sound insulation sealing strip, the bottom end of the second sound insulation sealing strip is flush with the bottom end of the first sound insulation sealing strip.
2. A combined door bottom sealing strip for a fireproof and soundproof door according to claim 1, characterized in that: The thickness of the fireproof sealing strip is between that of the first sound insulation sealing strip and the second sound insulation sealing strip, and the thickness of the second sound insulation sealing strip is greater than that of the first sound insulation sealing strip.
3. The combined door bottom sealing strip for fireproof and soundproof doors according to claim 1, characterized in that: The first sound insulation sealing strip and the second sound insulation sealing strip are both silicone fire-resistant sound insulation sealing strips.
4. A combined door bottom sealing strip for a fireproof and soundproof door according to any one of claims 1 to 3, characterized in that: A concave slot is formed at the bottom of the fireproof and soundproof door, and a U-shaped wear-resistant part that can slide along the height direction of the door panel is embedded in the slot. The first sealing strip and the second sealing strip are arranged in the U-shaped wear-resistant part along the thickness direction of the fireproof and soundproof door, and one side wall thereof respectively abuts against the inner wall of the U-shaped wear-resistant part. The sound insulation material extends into the U-shaped wear-resistant part and abuts against the upper ends of the first sealing strip and the second sealing strip.