Fireproof and heat-insulation composite air pipe

Abstract

The utility model discloses a fireproof heat insulation composite air pipe which comprises a first composite air pipe and a second composite air pipe, one end of the first composite air pipe and one end of the second composite air pipe are fixedly connected with first flanges, and the other end of the first composite air pipe and the other end of the second composite air pipe are fixedly connected with second flanges. The outer wall of the second flange is fixedly connected with a rubber pad, the outer wall of the second flange is fixedly connected with a plurality of positioning columns, and the inner wall of the outer wall of the first flange is fixedly connected with a concentric-square-shaped inner supporting strip. Through the arrangement of the first flange, the second flange, the positioning column, the concentric-square-shaped sealing strip, the fixing block, the U-shaped clamping block and the U-shaped rubber strip, the second composite air pipe and the first composite air pipe can be conveniently and rapidly butted and limited, secondary sealing is carried out through the rubber pad, the concentric-square-shaped butting strip and the concentric-square-shaped inner supporting strip, and the sealing effect is good. And the sealing performance after the second composite air pipe and the first composite air pipe are in butt joint is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite air ducts, in particular to a fireproof and heat-insulating composite air duct. Background Art

[0002] Fireproof and heat-insulating composite air duct is a comprehensive piping system consisting of metal air duct, insulation layer and outer fireproof material. It combines the strength and stability of metal air duct, as well as the heat resistance and fire resistance of insulation and fireproof materials. This composite structure enables fireproof and heat-insulating composite air duct to have better protection when dealing with fire. First of all, fireproof and heat-insulating composite air duct has excellent fireproof performance. Secondly, fireproof and heat-insulating composite air duct has good thermal insulation performance. It can not only keep the temperature of the air in the duct stable, but also reduce energy loss and improve the efficiency of the air conditioning system. In addition, fireproof and heat-insulating composite air duct has low noise transmission performance. In buildings, air conditioning systems often generate noise, causing discomfort to residents. The use of fireproof and heat-insulating composite air duct can effectively isolate noise, reduce noise transmission, and provide residents with a more peaceful living environment.

[0003] In the prior art, when the fireproof and heat-insulating composite air ducts are installed and connected, they are fixed by flanges and multiple bolts between the two fireproof and heat-insulating composite air ducts. In this way, if the bolts are not fully tightened or the outer surface of the flange is deformed, the fireproof and heat-insulating composite air duct is prone to air leakage during ventilation, and it is also extremely inconvenient to repeatedly remove the bolts for maintenance and replacement. Therefore, we propose a fireproof and heat-insulating composite air duct to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a fireproof and heat-insulating composite air duct.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fireproof and heat-insulating composite air duct comprises a first composite air duct and a second composite air duct, wherein one end of the first composite air duct and the second composite air duct are fixedly connected with a first flange, the other ends of the first composite air duct and the second composite air duct are fixedly connected with a second flange, the outer wall of the second flange is fixedly connected with a rubber pad, the outer wall of the second flange is fixedly connected with a plurality of positioning columns, the outer wall and inner wall of the first flange are fixedly connected with a return-shaped inner support strip, the outer wall of the second flange is fixedly connected with a return-shaped docking strip, the outer walls of the first flange and the second flange are fixedly connected with a return-shaped sealing strip, the outer wall of the return-shaped sealing strip is provided with a limiting mechanism, and the interiors of the first composite air duct and the second composite air duct are fixedly connected with a fireproof and heat-insulating layer.

[0007] Preferably, the limiting mechanism includes a plurality of fixed blocks, one ends of each of the fixed blocks are fixedly connected to the outer wall of the return-shaped sealing strip, the outer wall of the fixed block is rotatably connected to a U-shaped clamp block, and the inner wall of the U-shaped clamp block is fixedly connected to a U-shaped rubber strip, and the sealing between the first flange and the second flange is increased by providing the U-shaped rubber strip.

[0008] Preferably, a plurality of L-shaped strips are fixedly mounted on the outer walls of the first composite air duct and the second composite air duct, and the overall connection strength between the first composite air duct and the second composite air duct is increased by providing the L-shaped strips.

[0009] Preferably, a plurality of positioning holes are evenly formed on the outer wall of the first flange, and the outer wall of the positioning column is slidably connected to the inner wall of the positioning hole. By providing the positioning holes and the positioning column, the first composite air duct and the second composite air duct are initially fixed in position.

[0010] Preferably, the outer wall of the circular butt joint strip is slidably connected to the inner wall of the circular inner support strip.

[0011] Preferably, a threaded hole is provided on the outer wall of the U-shaped clamp, and a bolt is threadedly connected to the inner wall of the threaded hole. The bolt is provided to prevent the subsequent rubber pad from aging due to long-term use, and is used in subsequent maintenance work to increase the tightness between the first flange and the second flange.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] This solution facilitates quick docking and limiting of the second composite air duct with the first composite air duct by providing a first flange, a second flange, a positioning column, a return-shaped sealing strip, a fixing block, a U-shaped clamp block and a U-shaped rubber strip, and performs secondary sealing through rubber pads, return-shaped docking strips and return-shaped inner support strips to improve the sealing of the second composite air duct after docking with the first composite air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a partial cross-sectional structural schematic diagram of a fireproof and heat-insulating composite air duct proposed by the utility model;

[0016] Figure 2 This is a front view structural schematic diagram of a fireproof and heat-insulating composite air duct proposed by the utility model;

[0017] Figure 3This is a partial three-dimensional structural schematic diagram of a fireproof and heat-insulating composite air duct proposed by the utility model;

[0018] Figure 4 The utility model provides a fireproof and heat-insulating composite air duct Figure 1 A schematic diagram of the enlarged structure of part A;

[0019] Figure 5 The utility model provides a fireproof and heat-insulating composite air duct Figure 2 Schematic diagram of the enlarged structure of part B in FIG.

[0020] In the figure: 1. first composite air duct; 2. second composite air duct; 3. L-shaped strip; 4. first flange; 5. second flange; 6. rubber pad; 7. positioning column; 8. circular inner support strip; 9. circular docking strip; 10. circular sealing strip; 11. fixing block; 12. U-shaped clamping block; 13. U-shaped rubber strip; 14. bolt; 15. fireproof and heat-insulating layer. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Depend on Figure 1-Figure 5 As shown, it relates to a fireproof and heat-insulating composite air duct, including a first composite air duct 1 and a second composite air duct 2. The outer walls of the first composite air duct 1 and the second composite air duct 2 are fixedly installed with multiple L-shaped strips 3, and the multiple L-shaped strips 3 increase the overall connection strength of the first composite air duct 1 and the second composite air duct 2.

[0023] One end of the first composite air duct 1 and the second composite air duct 2 are both fixedly connected with a first flange 4, and a plurality of positioning holes are evenly opened on the outer wall of the first flange 4. The outer wall of the positioning column 7 is slidably connected to the inner wall of the positioning hole. The other end of the first composite air duct 1 and the second composite air duct 2 are both fixedly connected with a second flange 5, and a rubber pad 6 is fixedly connected to the outer wall of the second flange 5. After the first composite air duct 1 and the second composite air duct 2 are docked, the rubber pad 6 is located between the first flange 4 and the second flange 5 to play a sealing role. The outer wall of the second flange 5 is fixedly connected with a plurality of positioning columns 7.

[0024] The outer wall and inner wall of the first flange 4 are fixedly connected with a circular inner support bar 8, the outer wall of the second flange 5 is fixedly connected with a circular docking strip 9, the outer wall of the circular docking strip 9 is slidably connected to the inner wall of the circular inner support bar 8, and the circular docking strip 9 slides into the interior of the circular inner support bar 8 to further increase the sealing performance, the outer walls of the first flange 4 and the second flange 5 are fixedly connected with a circular sealing strip 10, and multiple circular sealing strips 10 are respectively fixedly connected to the outer walls of the first composite air duct 1 and the second composite air duct 2, the interiors of the first composite air duct 1 and the second composite air duct 2 are fixedly connected with a fireproof and heat-insulating layer 15, the fireproof and heat-insulating layer 15 is made of polyethylene foam, and the outer shells of the first composite air duct 1 and the second composite air duct 2 are made of aluminum foil.

[0025] A limiting mechanism is provided on the outer wall of the return-shaped sealing strip 10, and the limiting mechanism includes a plurality of fixed blocks 11, one end of each of the plurality of fixed blocks 11 is fixedly connected to the outer wall of the return-shaped sealing strip 10, the outer wall of the fixed block 11 is rotatably connected to a U-shaped clamping block 12, the inner wall of the U-shaped clamping block 12 is fixedly connected to a U-shaped rubber strip 13, the outer wall of the U-shaped clamping block 12 is provided with a threaded hole, and the inner wall of the threaded hole is threadedly connected to a bolt 14.

[0026] Working principle: During docking, the second flange 5 on the second composite air duct 1 is docked to the first flange 4 on the first composite air duct 2, and multiple positioning columns 7 are used to slide into the positioning holes to achieve initial position fixation; at the same time, the rubber pad 6 is located between the first flange 4 and the second flange 5, and the circular docking strip 9 on the second flange 5 slides into the circular inner support strip 8 in the first flange 4 to play a sealing role; the U-shaped clamp block 12 is rotated by the fixing block 11, so that the U-shaped rubber strip 13 in the U-shaped clamp block 12 is squeezed onto the outer wall of the first flange 4, and the first flange 4 and the second flange 5 are quickly fixed through multiple U-shaped clamp blocks 12.

[0027] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fireproof and heat-insulating composite air duct, comprising a first composite air duct (1) and a second composite air duct (2), characterized in that: One end of the first composite air duct (1) and the second composite air duct (2) are both fixedly connected with a first flange (4), the other ends of the first composite air duct (1) and the second composite air duct (2) are both fixedly connected with a second flange (5), the outer wall of the second flange (5) is fixedly connected with a rubber pad (6), the outer wall of the second flange (5) is fixedly connected with a plurality of positioning columns (7), the outer wall and inner wall of the first flange (4) are fixedly connected with a return-shaped inner support strip (8), the outer wall of the second flange (5) is fixedly connected with a return-shaped docking strip (9), the outer walls of the first flange (4) and the second flange (5) are both fixedly connected with a return-shaped sealing strip (10), the outer wall of the return-shaped sealing strip (10) is provided with a limiting mechanism, and the interiors of the first composite air duct (1) and the second composite air duct (2) are both fixedly connected with a fireproof heat insulation layer (15).

2. The fireproof and heat-insulating composite air duct according to claim 1, characterized in that: The limiting mechanism comprises a plurality of fixed blocks (11), one end of each of the plurality of fixed blocks (11) is fixedly connected to the outer wall of the return-shaped sealing strip (10), the outer wall of the fixed block (11) is rotatably connected to a U-shaped clamping block (12), and the inner wall of the U-shaped clamping block (12) is fixedly connected to a U-shaped rubber strip (13).

3. The fireproof and heat-insulating composite air duct according to claim 1, characterized in that: A plurality of L-shaped strips (3) are fixedly mounted on the outer walls of the first composite air duct (1) and the second composite air duct (2).

4. The fireproof and heat-insulating composite air duct according to claim 1, characterized in that: The outer wall of the first flange (4) is evenly provided with a plurality of positioning holes, and the outer wall of the positioning column (7) is slidably connected to the inner wall of the positioning hole.

5. The fireproof and heat-insulating composite air duct according to claim 1, characterized in that: The outer wall of the circular butt joint strip (9) is slidably connected to the inner wall of the circular inner support strip (8).

6. The fireproof and heat-insulating composite air duct according to claim 2, characterized in that: The outer wall of the U-shaped clamp block (12) is provided with a threaded hole, and the inner wall of the threaded hole is threadedly connected with a bolt (14).

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