Sound-insulation and heat-insulation type steel fire-fighting fireproof door

Abstract

The utility model relates to a sound insulation and heat insulation type steel fire-fighting fireproof door, in particular to the technical field of fireproof doors. The door comprises a door frame, a first door leaf, a second door leaf, an upper frame and a lower frame, a groove is formed in the face, making contact with the second door leaf, of the first door leaf, a boss matched with the groove is arranged on the face, making contact with the first door leaf, of the second door leaf, and the face, making contact with the second door leaf, of the first door leaf and the second door leaf is an inclined face after the first door leaf and the second door leaf are closed. A first sealing strip is arranged on the inner wall of the groove, a second sealing strip is arranged on the outer wall of the boss, the size and shape of the first sealing strip are matched with those of the groove, and the size and shape of the second sealing strip are matched with those of the boss, so that when the first door leaf and the second door leaf are closed, a gap between the first door leaf and the second door leaf is smaller, and the integrating degree is higher; the sealing performance is higher, and the sound insulation performance and the heat insulation performance of the fireproof door are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a sound insulation and heat insulation steel fireproof door. Background Art

[0002] Although traditional steel fire doors meet the requirements in terms of fire resistance, they are often insufficient in terms of sound insulation and heat insulation performance. In particular, the airtightness of the opening and closing positions between the two doors of a double-leaf fire door directly affects its sound insulation and heat insulation effects, and cannot meet the comprehensive performance requirements of modern buildings. Utility Model Content

[0003] (1) Technical issues to be solved

[0004] The utility model provides a sound insulation and heat insulation type steel fireproof door, which overcomes the shortcomings of traditional steel fireproof doors in terms of sound insulation and heat insulation performance, especially the airtightness of the opening and closing positions between the two doors of the double-leaf fireproof door directly affects its sound insulation and heat insulation effects, and cannot meet the requirements of modern buildings for comprehensive performance.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the utility model provides a sound insulation and heat insulation steel fireproof door, comprising a door frame, a first door leaf, a second door leaf, an upper frame and a lower frame, the first door leaf and the second door leaf are respectively installed on the inner walls on both sides of the door frame, the surface of the first door leaf and the second door leaf in contact after closing is an inclined surface, a groove is provided on the surface of the first door leaf in contact with the second door leaf, a boss matching the groove is provided on the surface of the second door leaf in contact with the first door leaf, a first sealing strip is provided on the inner wall of the groove, and a second sealing strip is provided on the outer wall of the boss, the first door leaf and the second door leaf comprise an upper frame located at the top and a lower frame located at the bottom, a first steel plate, a second steel plate and a third steel plate are sequentially provided between the upper frame and the lower frame from one side to the other side, a cavity is provided between the second steel plate and the first steel plate and the third steel plate, a fireproof layer and a heat insulation layer are sequentially provided on the side of the first steel plate and the third steel plate close to the second steel plate, and sound insulation strips are provided on the outer walls of both sides of the second steel plate.

[0007] Preferably, the side of the sound insulation strip away from the second steel plate is a concave arc structure.

[0008] Preferably, the sound insulation strip is provided with sound-absorbing cotton, and the sound-absorbing cotton is attached to the surface of the concave arc structure.

[0009] Preferably, the size and shape of the first sealing strip are matched with the size and shape of the groove.

[0010] Preferably, the size and shape of the second sealing strip are matched with the size and shape of the boss.

[0011] (3) Beneficial effects

[0012] The utility model provides a sound insulation and heat insulation steel fire door, which overcomes the shortcomings of traditional steel fire doors in terms of sound insulation and heat insulation performance, especially the airtightness of the opening and closing positions between the two doors of the double-leaf fire door directly affects its sound insulation and heat insulation effects, and cannot meet the requirements of modern buildings for comprehensive performance. Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. A groove is provided on the surface where the first door leaf contacts the second door leaf, a boss matching the groove is provided on the surface where the second door leaf contacts the first door leaf, and the surface where the first door leaf contacts the second door leaf after closing is an inclined surface. In this way, the gap between the first door leaf and the second door leaf is smaller when they are closed, the fit is higher, the airtightness is stronger, and the sound insulation and heat insulation of the fire door are greatly improved.

[0014] 2. A first sealing strip is provided on the inner wall of the groove, and a second sealing strip is provided on the outer wall of the boss. The size and shape of the first sealing strip are adapted to the size and shape of the groove, and the size and shape of the second sealing strip are adapted to the size and shape of the boss. This arrangement greatly improves the fit and sealing of the first door leaf and the second door leaf when they are closed.

[0015] 3. The heat insulation of the fire door is further improved by providing a heat insulation layer, and the sound insulation performance of the fire door is further improved by providing a cavity and sound insulation strips between the second steel plate and the first steel plate and the third steel plate.

[0016] 4. Noise is absorbed by sound-absorbing cotton, and the concave arc structure can increase the noise absorption area and improve the sound insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the utility model.

[0018] Figure 2 It is a cross-sectional view of the first door leaf of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the sound insulation strip of the utility model.

[0020] Figure 4 This is a top view of the utility model when the first door leaf is separated from the second door leaf.

[0021] Figure 5 This is a top view of the first door leaf and the second door leaf of the utility model when they are closed.

[0022] The accompanying drawings are marked as: 1-door frame, 2-first door leaf, 21-groove, 22-first sealing strip, 3-second door leaf, 31-boss, 32-second sealing strip, 4-upper frame, 5-lower frame, 6-first steel plate, 7-second steel plate, 8-third steel plate, 9-fireproof layer, 10-thermal insulation layer, 11-sound insulation strip, 111-sound-absorbing cotton. DETAILED DESCRIPTION

[0023] The utility model is further described in conjunction with the accompanying drawings and embodiments.

[0024] like Figures 1 to 5 As shown, a sound insulation and heat insulation steel fireproof door described in the utility model comprises a door frame 1, a first door leaf 2, a second door leaf 3, an upper frame 4, and a lower frame 5. The first door leaf 2 and the second door leaf 3 are respectively installed on the inner walls on both sides of the door frame 1. The contact surface between the first door leaf 2 and the second door leaf 3 after closing is an inclined surface. A groove 21 is provided on the surface where the first door leaf 2 contacts the second door leaf 3. A boss 31 matching the groove 21 is provided on the surface where the second door leaf 3 contacts the first door leaf 2. A first sealing member is provided on the inner wall of the groove 21. Strip 22, a second sealing strip 32 is provided on the outer wall of the boss 31, the first door leaf 2 and the second door leaf 3 include an upper frame 4 located at the top and a lower frame 5 located at the bottom, a first steel plate 6, a second steel plate 7 and a third steel plate 8 are provided between the upper frame 4 and the lower frame 5 from one side to the other, there are cavities between the second steel plate 7 and the first steel plate 6 and the third steel plate 8, a fireproof layer 9 and a heat insulation layer 10 are provided on the side of the first steel plate 6 and the third steel plate 8 close to the second steel plate 7, and sound insulation strips 11 are provided on the outer walls on both sides of the second steel plate 7.

[0025] The side of the sound insulation strip 11 away from the second steel plate 7 is a concave arc structure. The sound insulation strip 11 is provided with sound-absorbing cotton 111. The sound-absorbing cotton 111 is attached to the surface of the concave arc structure. Noise is absorbed by the sound-absorbing cotton 111. In addition, the setting of the concave arc structure can increase the area of ​​noise absorption and improve the sound insulation effect.

[0026] The size and shape of the first sealing strip 22 match the size and shape of the groove 21 , and the size and shape of the second sealing strip 32 match the size and shape of the boss 31 . This arrangement greatly improves the fit and sealing of the first door leaf 2 and the second door leaf 3 when they are closed.

[0027] In actual work, the contact surface of the first door leaf 2 and the second door leaf 3 after closing is an inclined surface, and a groove 21 is provided on the contact surface of the first door leaf 2 and the second door leaf 3, and a boss 31 matching the groove 21 is provided on the contact surface of the second door leaf 3 and the first door leaf 2. With such a configuration, the gap between the first door leaf 2 and the second door leaf 3 is smaller when they are closed, the fit is higher, and the airtightness is stronger, which greatly improves the sound insulation and heat insulation of the fire door; a first sealing strip 22 is provided on the inner wall of the groove 21, and a second sealing strip 32 is provided on the outer wall of the boss 31. The sealing strip is a fireproof sealing strip. With such a configuration, the airtightness of the first door leaf 2 and the second door leaf 3 when they are closed is improved, and the sound insulation and heat insulation of the fire door are further improved. By providing a heat insulation layer 10, the heat insulation of the fire door is further improved, and the sound insulation performance of the fire door is further improved by providing a cavity and a sound insulation strip 11 between the second steel plate 7 and the first steel plate 6 and the third steel plate 8.

[0028] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but the utility model is not limited to these embodiments. It should be pointed out that for ordinary technicians in this field. Under the premise of not departing from the purpose of the utility model, any improvement made shall fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A sound insulation and heat insulation steel fire door, characterized in that: The invention comprises a door frame (1), a first door leaf (2), a second door leaf (3), an upper frame (4) and a lower frame (5); the first door leaf (2) and the second door leaf (3) are respectively mounted on the inner walls on both sides of the door frame (1); the surfaces where the first door leaf (2) and the second door leaf (3) contact each other after closing are inclined surfaces; a groove (21) is arranged on the surface where the first door leaf (2) and the second door leaf (3) contact each other; a boss (31) matching the groove (21) is arranged on the surface where the second door leaf (3) and the first door leaf (2) contact each other; a first sealing strip (22) is arranged on the inner wall of the groove (21); and a sealing strip (22) is arranged on the outer wall of the boss (31). There is a second sealing strip (32), the first door leaf (2) and the second door leaf (3) include an upper frame (4) located at the top and a lower frame (5) located at the bottom, a first steel plate (6), a second steel plate (7) and a third steel plate (8) are arranged in sequence from one side to the other between the upper frame (4) and the lower frame (5), there are cavities between the second steel plate (7) and the first steel plate (6) and the third steel plate (8), a fireproof layer (9) and a heat insulation layer (10) are arranged in sequence on the side of the first steel plate (6) and the third steel plate (8) close to the second steel plate (7), and sound insulation strips (11) are arranged on the outer walls on both sides of the second steel plate (7).

2. A sound insulation and heat insulation steel fireproof door according to claim 1, characterized in that: The side of the sound insulation strip (11) away from the second steel plate (7) is a concave arc structure.

3. A sound insulation and heat insulation steel fireproof door according to claim 2, characterized in that: The sound insulation strip (11) is provided with sound absorbing cotton (111), and the sound absorbing cotton (111) is attached to the surface of the concave arc structure.

4. A sound insulation and heat insulation steel fireproof door according to claim 1, characterized in that: The size and shape of the first sealing strip (22) are matched to the size and shape of the groove (21).

5. The sound insulation and heat insulation steel fireproof door according to claim 1, characterized in that: The size and shape of the second sealing strip (32) are matched to the size and shape of the boss (31).

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