Integrated fire-proof air pipe without buckling groove

Abstract

The utility model discloses an integrated fire-proof air duct without a buckling groove, which comprises an inner side bending plate, a vertical folding edge and a horizontal folding edge are arranged at two ends of the inner side bending plate, a corner connector is arranged at the corner of the horizontal folding edge, one-time or two-time forming of the inner side bending plate can be directly realized through a bending machine, the forming efficiency is improved, no breakpoint exists, and the integral fire-proof air duct without the buckling groove is suitable for large-scale popularization and application. According to the integrated fire-proof air pipe without the buckling groove, the inner wall is not damaged, corrosion is effectively prevented, and the service life is longer; the fireproof plate is arranged between the horizontal folding edges at the two ends, the end flanges are fixed to the vertical folding edges, and the horizontal folding edges and the corner connectors are wrapped in the middle through the end flanges, so that assembly is convenient and rapid, the product manufacturing cost is reduced, the assembly efficiency is improved, the inner side surface is smooth and free of blocking after assembly, airflow can pass through rapidly, and the service life is prolonged. The airflow passing efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilation ducts, and in particular relates to an integrated buckle-free groove fireproof duct used in surface buildings or tunnels. Background Art

[0002] In the field of ventilation duct technology, the state has clear data requirements for the fire resistance performance of ventilation ducts in the design standards of ventilation ducts. The standard is based on: according to the inspection standards required by GB / T17428-2009 "Fire resistance test method for ventilation ducts", the fire resistance limit is not less than 3 hours.

[0003] In order to meet the national standards, the common improvement measures for the existing ventilation ducts are to coat the outside of the duct with a layer of fireproof cotton, and to achieve the bonding of the fireproof cotton to the outer wall of the duct by means of nailing or external tightening, or to bond the fireproof cotton to the inner wall of the duct. This fireproof method performs well in the test phase, but it generally cannot achieve high or relatively stable fireproof performance during mass production sampling. After improving various existing products, technicians in this field have achieved the fixation of the inner and outer fireproof layers by means of inserting pipes or buckling grooves. The specific structure of this product can be referred to the publication number CN220816828 U is a high-temperature resistant air duct, but this kind of high-temperature resistant air duct must be fixed in a set manner during production, by making an inner sleeve and an outer sleeve, fixing the insulation material inside, and then sealing the insulation material through the end fixing flange; this assembly structure has the following disadvantages: 1. The assembly process is complicated, and special equipment for fixing the inner and outer sleeves is required, and the assembly structure is complicated; 2. The sealing piece set at the end will extend into the inside of the air duct and protrude inside the air duct, affecting the ventilation efficiency; 3. The assembly efficiency is low, the production cost cannot be reduced, and it is not easy to promote commercially.

[0004] In view of the above-mentioned drawbacks of fireproof air ducts, as technicians in this field, it is very necessary to design an integrated buckleless fireproof air duct structure, which can effectively overcome the drawbacks of low assembly efficiency and low ventilation efficiency in the prior art and reduce production costs. Utility Model Content

[0005] In view of the shortcomings of the prior art mentioned above, the utility model proposes an integrated fireproof air duct without buckle grooves, which improves the overall assembly structure of the air duct, uses a bending machine to bend the internal plate into one piece, and fixes the fireproof plate by fitting the plate outside and fixing it with rivets, thereby improving the ventilation efficiency and assembly efficiency while ensuring internal transparency.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] An integrated fireproof air duct without buckle grooves comprises an inner bending plate, vertical folded edges and horizontal folded edges are arranged on both ends of the inner bending plate, and corners of the horizontal folded edges are arranged with corner codes; a fireproof board is arranged between the horizontal folded edges at both ends; an end flange is fixed on the vertical folded edge; the end flange covers the horizontal folded edge and the corner code in the middle; the fireproof board is a multi-layer board, comprising at least a steel plate layer and a fire-resistant layer.

[0008] When the fireproof board is combined with the inner bending board, the fireproof boards are fixed on four surfaces respectively, and each two adjacent fireproof boards are sealed by a positive angle piece.

[0009] When the fireproof board is combined with the inner bending board, it is covered on four sides by an integrated board. The fire-resistant layer of the integrated board is provided with a V-shaped groove at the corner. The V-shaped groove at the corner is provided with a glue hanging groove. When the V-shaped groove at the corner is bent and fixed, the fire-resistant sealing of the corner is improved by the glue hanging groove.

[0010] The fire-resistant layer is provided with a concave-convex surface, and the concave-convex surface is used to realize glue hanging on the inner side, which can improve the bonding strength between the fire-resistant layer and the inner bending plate.

[0011] The steel plate layer is provided with an extended edge, and the extended edge is used for covering the steel plate layer.

[0012] The end flange is arranged as a right-angle structure, which comprises an outer assembly surface and an inner assembly surface, and the inner assembly surface is combined and fixed with the steel plate layer on the multi-layer board.

[0013] The corner code is fixed on the inner side of the horizontal folded edge by riveting. This structure can place the riveting screws on the inner side, improve the assembly appearance and avoid scratches during outer side assembly.

[0014] The utility model has the following beneficial effects: the utility model includes an inner bending plate, vertical folding edges and horizontal folding edges are arranged on both ends of the inner bending plate, and corner codes are arranged at the corners of the horizontal folding edges. The inner bending plate can be directly formed once or twice by a bending machine, and the forming efficiency is improved and there is no breakpoint, strong tightness, no gap, no dust or dirt leakage. The inner wall of the one-piece buckleless fireproof air duct is not damaged, effectively preventing corrosion and having a longer service life; a fireproof plate is arranged between the horizontal folding edges at both ends, and an end flange is fixed on the vertical folding edge. The end flange covers the horizontal folding edge and the corner code in the middle, which is convenient and quick to assemble, reduces the product manufacturing cost, improves the assembly efficiency, and after assembly, the inner surface is smooth and unobstructed, the airflow can pass quickly, and the airflow efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of Embodiment 1 of the present utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of Embodiment 2 of the present utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the end flange;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the inner bending plate;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the four-sided integrated fireproof board when it is not bent;

[0021] Figure 6 It is a schematic diagram of the sealing structure of the four-sided integrated fireproof board;

[0022] In the figure, 1. fireproof board, 10. integrated board material, 11. steel plate layer, 12. fire-resistant layer, 13. concave and convex surface, 14. V-shaped groove at the corners, 15. glue hanging groove, 16. extended edge, 2. end flange, 21. inner assembly surface, 22. outer assembly surface, 23. outer fixing hole, 24. inner fixing hole, 3. corner code, 4. inner bending plate, 41. horizontal folded edge, 42. vertical folded edge, 43. side fixing hole, 5. male corner piece. DETAILED DESCRIPTION

[0023] The present invention is described below by specific embodiments. Obviously, the implementation of the present invention is not limited to the specific details familiar to technicians in the relevant field. On the other hand, the well-known molding steps in the field of air ducts are not described in detail to avoid unnecessary limitations on the present invention. In addition to the detailed description of the following embodiments, the present invention can also be widely implemented in other embodiments, and the protection scope of the present invention is not limited, which is subject to the attached claims.

[0024] Embodiment 1: As shown in the accompanying drawings, an integrated fireproof air duct without buckle grooves includes an inner bending plate 4, and vertical flanges 42 and horizontal flanges 41 are provided on both ends of the inner bending plate 4, and corners of the horizontal flanges 41 are provided with corner codes 3; the entire inner bending plate 4 is integrally formed, has strong tightness, no gaps, and no dust or dirt leakage, and a fireproof board 1 is provided between the horizontal flanges 41 at both ends; an end flange 2 is fixed on the vertical flange 42; the end flange 2 covers the horizontal flange 41 and the corner code 3 in the middle; the fireproof board 1 is a multi-layer board, which includes a steel plate layer 11 and a fire-resistant layer 12.

[0025] Furthermore, when the fireproof board 1 is combined with the inner bending board 4, Figure 2 As shown, fireproof panels 1 are fixed on four surfaces respectively, and each two adjacent fireproof panels 1 are sealed by a male corner piece 5.

[0026] The end flange 2 is a right-angle structure, which includes an outer assembly surface 22 and an inner assembly surface 21. The outer assembly surface 22 is provided with an outer fixing hole 23, and the inner assembly surface 21 is provided with an inner fixing hole 24. The inner assembly surface 21 is fixed to the steel plate layer 11 on the multi-layer board by rivets penetrating the inner fixing hole 24. After being fixed by rivets, the rivet bolts are arranged on the outside. The outer fixing hole 23 is used as a connection hole for a multi-section integral buckle-free fireproof air duct.

[0027] like Figure 1 As shown, the fireproof air duct of the above structure can be prefabricated with a multi-layer fireproof board 1 in the factory, and after being cut to a certain size, it can be plugged and assembled with the inner bending plate 4 on the production line. After assembly, the end flange 2 and the corner code 3 are installed and fixed. After the rivet passes through the side fixing hole 43 on the vertical folded edge 42 and is locked and fixed with the fireproof board 1, only the end flange 2 and the corner code 3 can be seen at the end, and the fireproof board 1 and the male corner piece 5 can be seen from the side. The inner side surface of the entire fireproof air duct is a smooth structure. This design improves the assembly efficiency and the inner surface is smooth and unobstructed after assembly, so the airflow can pass quickly, thereby improving the airflow passing efficiency. The inner wall of this one-piece buckleless fireproof air duct is not damaged, which effectively prevents corrosion and has a longer service life.

[0028] Embodiment 2: Based on the structure of embodiment 1, when assembling the fireproof board 1, it is necessary to paste it on four sides, so the assembler needs to perform the insertion action many times. At the same time, after assembly, the outer corner piece 5 needs to be used to seal the corners. The sealing point of the outer corner piece 5 after this combination becomes a fire hazard. In order to improve the above technical problems, the applicant has made further improvements, such as Figure 5 As shown, when the fireproof board 1 is combined with the inner bending board 4, it is covered on four sides by an integrated board 10. The integrated board 10 adopts a long strip structure, the inner side of which is a fire-resistant layer 12, and the outer side of which is a steel plate layer 11. The edge and the middle of the fire-resistant layer 12 on the inner side form four corner V-shaped grooves 14. The corner V-shaped grooves 14 are provided with glue grooves 15. When the corner V-shaped grooves 14 are bent and fixed, the four sides are bent at right angles to form a square cylindrical structure, and the fire-resistant sealing of the corners is improved by the fireproof glue in the glue grooves 15.

[0029] Furthermore, the fire-resistant layer 12 is provided with a concave-convex surface 13 , and the concave-convex surface 13 is used to implement glue hanging on the inner side, which can improve the bonding strength between the fire-resistant layer 12 and the inner bending plate 4 .

[0030] Furthermore, the steel plate layer 11 is provided with an extended edge 16, such as Figure 6As shown, the extended edge 16 is used to cover the steel plate layer 11 at the head and tail ends. This design does not require the use of additional male corner pieces 5 for edge sealing, which can increase assembly efficiency.

[0031] When the fireproof board 1 with the four-sided integrated structure disclosed above is actually assembled, there are differences in the process flow from Example 1, which is as follows. The inner bending plate 4 is first bent into a square shape to form a square cylindrical structure. At the same time, grooves are cut at the four corners at both ends to separate the areas at the four ends. The fireproof board 1 is wrapped around the inner bending plate 4 of the cylindrical structure and then extruded and fixed. After the two are firmly bonded, the vertical flange edges 42 and the horizontal flange edges 41 at both ends of the inner bending plate 4 are folded into shape by an integrated bending machine. After bending and forming, the corner code 3 is fixed to the horizontal flange edges 41 at the four corners of the end of the inner bending plate 4 by riveting to achieve corner fixation. The various fixing holes in the above structure can be stamped when the inner bending plate 4 is in a straight state. This punching process is a common technology in the prior art and will not be repeated here. The corner code 3 is fixed on the inner side of the horizontal folded edge 41 by riveting. This structure can place the riveting screws on the inner side, improve the aesthetics of the assembly and avoid scratches during the outer assembly. After the above operations are completed, the end flange 2, the vertical folded edge 42, and the steel plate layer 11 are installed and fixed by riveting on the outer side. After locking and fixing, only the end flange 2 and the corner code 3 can be seen at the end, and only the fireproof board 1 can be seen on the side. The inner side of the entire fireproof air duct is a smooth structure, and the outer side is also relatively neat. This design realizes a smooth and unobstructed inner surface after assembly, and the airflow can pass quickly, which improves the airflow passing efficiency. The outer side is smooth, has few joints and is closed, which improves the product's fire safety performance and appearance. Because the entire inner bending plate 4 is integrally formed and the riveting points are all on the outside, the inner wall of this integrated buckle-free fireproof air duct is not damaged, effectively preventing corrosion and extending the service life.

[0032] In summary, the utility model arranges the fireproof material inside the air duct through the above structural arrangement, and the fireproof material is installed in a standardized manner in the factory, with high operation quality and good fireproof stability of the product; the ventilation efficiency in the pipeline is improved, and the insulation performance from the outside is good; the fireproof layer 12 in the fireproof board 1 can adopt an iron-rich high-temperature resistant mineral wool insulation board, and its fireproof temperature can reach a temperature of more than 1000°C, with extremely high thermal stability and resistance to high-temperature shrinkage, and can also stably maintain the stability of the fiber structure at high temperatures.

Claims

1. An integrated fireproof air duct without buckle groove, characterized in that: It comprises an inner bending plate, vertical folding edges and horizontal folding edges are arranged on both ends of the inner bending plate, corners of the horizontal folding edges are arranged with corner codes; a fireproof plate is arranged between the horizontal folding edges at both ends; an end flange is fixed on the vertical folding edge; the end flange covers the horizontal folding edge and the corner code in the middle; the fireproof plate is a multi-layer plate, comprising at least a steel plate layer and a fire-resistant layer.

2. The one-piece fireproof air duct without buckle groove according to claim 1, characterized in that: The fireproof board is combined with the inner bending board, and the fireproof boards are fixed on four surfaces respectively, and each two adjacent fireproof boards are sealed by a positive angle piece.

3. The one-piece fireproof air duct without buckle groove according to claim 1, characterized in that: The fireproof board is combined with the inner bending board and covered on four sides by an integrated board. The fire-resistant layer of the integrated board is provided with a corner V-shaped groove, and the corner V-shaped groove is provided with a glue hanging groove.

4. The one-piece fireproof air duct without buckle groove according to claim 1, 2 or 3, characterized in that: The fire-resistant layer is provided with a concave-convex surface, and the concave-convex surface is used to realize glue hanging on the inner side.

5. The one-piece fireproof air duct without buckle groove according to claim 3, characterized in that: The steel plate layer is provided with an extended edge, and the extended edge is used for covering the steel plate layer.

6. The one-piece fireproof air duct without buckle groove according to claim 1, 2 or 3, characterized in that: The end flange is arranged as a right-angle structure, which comprises an outer assembly surface and an inner assembly surface, and the inner assembly surface is combined and fixed with the steel plate layer on the multi-layer board.

7. The one-piece fireproof air duct without buckle groove according to claim 1, 2 or 3, characterized in that: The corner code is fixed to the inner side of the horizontal folded edge by riveting.

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