Single-steel-face floating bead fire-resistant heat-insulation smoke prevention and exhaust air pipe

Abstract

The utility model relates to the technical field of smoke prevention and exhaust air pipes, in particular to a single-steel-face floating bead fire-resistant heat-insulation smoke prevention and exhaust air pipe which comprises a smoke prevention and exhaust air pipe body, a first fixing flange and a second fixing flange, and the first fixing flange and the second fixing flange are arranged at the two ends of the smoke prevention and exhaust air pipe body respectively. A first sealing block is arranged on the sealing face of the first fixing flange and located on the periphery of a center hole of the first fixing flange, and a first sealing groove is formed in the sealing face of the first fixing flange and located on the periphery of the first sealing block. The first sealing block is inserted into the second sealing groove, the second sealing block is inserted into the first sealing groove, the sealing gasket 4 is extruded in the installation process, double sealing is achieved, the sealing effect is improved, and smoke leakage is avoided; and through cooperative use of the supporting frame, the threaded rod, the locking nut and other structures, the connecting stability of the first fixing flange and the second fixing flange can be improved, and the mounting height of the smoke prevention and exhaust air pipe can be conveniently adjusted according to the height of an indoor ceiling.

Description

Technical Field

[0001] This utility model relates to the field of smoke exhaust duct technology, specifically to a single-sided steel-faced floating ball fire-resistant and heat-insulating smoke exhaust duct. Background Technology

[0002] Fire safety is paramount in modern buildings. As a key component of building fire protection systems, smoke extraction ducts primarily function to promptly remove smoke and toxic gases from indoor spaces during a fire, while simultaneously providing fresh air for evacuation and firefighting operations, thereby effectively protecting lives and minimizing property damage. The performance of smoke extraction ducts directly impacts the effectiveness of the entire fire protection system.

[0003] For ease of transportation, multiple single-section smoke exhaust ducts are typically connected together using flanges and then suspended from the ceiling. When two adjacent smoke exhaust ducts are connected by flanges, the sealing performance of the flange connection is always one of the key factors affecting the performance of the smoke exhaust ducts. If the flange connection is not well sealed, smoke may leak from the connection point in the event of a fire, leading to a decrease in smoke control and exhaust effectiveness, and may even affect personnel evacuation and fire rescue operations. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a single-faced steel ball-bearing fire-resistant and heat-insulating smoke exhaust duct to solve the problem of poor flange connection sealing leading to smoke leakage mentioned in the background art.

[0005] To achieve the above technical objectives, this utility model proposes the following technical solution: a single-sided steel-faced float-bead fire-resistant and heat-insulating smoke-proof duct, comprising a smoke-proof duct and a first fixed flange and a second fixed flange respectively disposed at both ends of the smoke-proof duct. A first sealing block is provided on the sealing surface of the first fixed flange and around the center hole of the first fixed flange. A first sealing groove is provided on the sealing surface of the first fixed flange and around the first sealing block. A second sealing groove adapted to the first sealing block and a second sealing block adapted to the first sealing groove are respectively provided on the sealing surface of the second fixed flange. A sealing gasket is provided in both the first sealing groove and the second sealing groove. A lifting assembly is provided on the first fixed flange and the second fixed flange on two adjacent smoke-proof ducts.

[0006] Furthermore, multiple mounting holes are provided between the first sealing block and the first sealing groove of the first fixed flange, and between the second sealing groove and the second sealing block of the second fixed flange, and bolts are provided in the mounting holes.

[0007] Furthermore, the mating surfaces of the sealing gaskets in the first sealing block and the second sealing groove, as well as the mating surfaces of the sealing gaskets in the second sealing block and the first sealing groove, are all serrated. The smoke exhaust duct is a rectangular hollow structure integrally formed from a cenosphere refractory insulation board, and a steel plate is fixed to the outside of the cenosphere refractory insulation board by silica gel and welding studs.

[0008] Furthermore, the outer surface of the smoke exhaust duct is coated with an aerogel composite coating or an inorganic resin layer.

[0009] Furthermore, the hoisting assembly includes a U-shaped support frame with fixing blocks at both ends. The fixing blocks have circular holes with threaded rods inside the holes, and locking nuts are connected to the threaded rods through the holes.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves double sealing by inserting the first sealing block into the second sealing groove and the second sealing block into the first sealing groove, and squeezing the sealing gasket 4 during the installation process, thereby improving the sealing effect and preventing smoke leakage; through the combined use of structures such as the bracket, threaded rod and locking nut, not only can the stability of the connection between the first fixed flange and the second fixed flange be improved, but the installation height of the smoke exhaust duct can also be easily adjusted according to the height of the indoor ceiling. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a utility model Figure 1 Mid-section structural schematic diagram;

[0013] Figure 3 This is the utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0014] In the diagram, 1. Smoke exhaust duct; 2. First fixed flange; 21. First sealing block; 22. First sealing groove; 3. Second fixed flange; 31. Second sealing groove; 32. Second sealing block; 4. Sealing gasket; 5. Lifting assembly; 51. Support frame; 52. Fixing block; 53. Threaded rod; 54. Locking nut; 6. Bolt. Detailed Implementation

[0015] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figure 1-3As shown, this utility model provides a single-bead steel float fire-resistant heat-insulating smoke exhaust duct, including a smoke exhaust duct 1 and a first fixed flange 2 and a second fixed flange 3 respectively disposed at both ends of the smoke exhaust duct 1. The first fixed flange 2 and the second fixed flange 3 are respectively fixedly installed on the smoke exhaust duct 1. A first sealing block 21 is fixedly disposed on the sealing surface of the first fixed flange 2 and around the center hole of the first fixed flange 2. A first sealing groove 22 is opened on the sealing surface of the first fixed flange 2 and around the first sealing block 21. A second sealing groove 31 adapted to the first sealing block 21 and a second sealing block 32 adapted to the first sealing groove 22 are respectively provided on the sealing surface of the second fixed flange 3. A high-elasticity sealing gasket 4 is provided in both the first sealing groove 22 and the second sealing groove 31. Multiple mounting holes are opened between the first sealing block 21 and the first sealing groove 22 of the first fixed flange 2, and between the second sealing groove 31 and the second sealing block 32 of the second fixed flange 3. Bolts 6 are provided in the mounting holes. Lifting components 5 are provided on the first fixed flange 2 and the second fixed flange 3 of two adjacent smoke exhaust ducts 1.

[0017] like Figure 1-3 As shown, in this embodiment, a double-seal structure is adopted for the sealing of the connection between two adjacent flanges. Specifically, the first fixed flange 2 and the second fixed flange 3 are joined together, with the first sealing block 21 inserted into the second sealing groove 31 and the second sealing block 32 inserted into the first sealing groove 22. At the same time, the first fixed flange 2 and the second fixed flange 3 are connected together by bolts 6. During the connection process, the first sealing block 21 is squeezed and tightly fitted with the sealing gasket 4 in the second sealing groove 31 to achieve a first seal. The second sealing block 32 is tightly fitted with the high-elasticity sealing gasket in the first sealing groove 22 to achieve a second seal. The double seal can significantly improve the sealing effect of the smoke exhaust duct. Both the first sealing block 21 and the second sealing block 32 are made of fire-resistant and heat-insulating materials, which can effectively prevent the smoke from being conducted to the sealing gasket 4 and causing damage to the sealing gasket 4.

[0018] The mating surfaces of the sealing gaskets 4 in the first sealing block 21 and the second sealing groove 31, as well as the mating surfaces of the sealing gaskets 4 in the second sealing block 32 and the first sealing groove 22, are all serrated.

[0019] like Figure 3 As shown, the bonding surface is serrated, which can further improve the sealing effect and prevent smoke leakage.

[0020] The smoke exhaust duct 1 is a rectangular hollow structure integrally formed from a cenosphere refractory insulation board. A steel plate is fixed to the outside of the cenosphere refractory insulation board by silica gel and welding studs.

[0021] like Figure 1As shown, silica gel is used to tightly bond the steel plate and the cenosphere refractory insulation board, and a welding stud fixing process is used to enhance the adhesion between the steel plate surface and the cenosphere refractory insulation board interface, avoid the problem of delamination and cracking, and improve the overall bending resistance of the smoke exhaust duct 1.

[0022] The outer surface of the smoke exhaust duct 1 is coated with an aerogel composite coating or an inorganic resin layer.

[0023] like Figure 1 As shown, an aerogel composite coating or inorganic resin layer is sprayed onto the outer side of the steel plate to improve its high temperature resistance and anti-aging properties, reduce the risk of warping of the steel plate surface under high temperature conditions, and enhance its resistance to deformation.

[0024] The hoisting assembly 5 includes a U-shaped support frame 51, with fixing blocks 52 at both ends of the support frame 51. The fixing blocks 52 have round holes, and threaded rods 53 are provided in the round holes. The threaded rods 53 pass through the round holes and are connected to locking nuts 54.

[0025] like Figure 1 As shown, after the first fixed flange 2 and the second fixed flange 3 are connected, the support frame 51 covers the lower part and both sides of the first fixed flange 2 and the second fixed flange 3, and the support frame 51 supports the first fixed flange 2 and the second fixed flange 3, thereby improving the stability of the connection between the first fixed flange 2 and the second fixed flange 3; the height of the threaded rod 53 can be adjusted by rotating the locking nut 54, so as to facilitate the adjustment of the installation height of the smoke exhaust duct 1 according to the height of the indoor ceiling.

[0026] Operating principle: During installation, the first fixed flange 2 and the second fixed flange 3 of two adjacent smoke exhaust ducts 1 are joined together, with the first sealing block 21 inserted into the second sealing groove 31 and the second sealing block 32 inserted into the first sealing groove 22. Then, the first fixed flange 2 and the second fixed flange 3 are installed together with bolts 6. During installation, the first sealing block 21 will squeeze the sealing gasket 4 in the second sealing groove 31, and the second sealing block 32 will squeeze the sealing gasket 4 in the second sealing groove 22, so that the first sealing block 21 and the sealing gasket 4 in the second sealing groove 31 are tightly fitted together, effectively preventing smoke leakage. When hoisting the smoke exhaust duct 1, the support frame 51 is placed on the lower part of the first fixed flange 2 and the second fixed flange 3, and then the height of the threaded rod 53 is adjusted by tightening the locking nut 54 according to the installation height, thereby realizing the adjustment of the height of the smoke exhaust duct 1.

[0027] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A single-steel-face floating bead refractory heat-insulating smoke exhaust air duct, comprising a smoke exhaust air duct (1) and a first fixed flange (2) and a second fixed flange (3) respectively arranged at both ends of the smoke exhaust air duct (1), characterized in that: The sealing surface of the first fixed flange (2) is provided with a first sealing block (21) outside the peripheral hole of the first fixed flange (2), and the sealing surface of the first fixed flange (2) is provided with a first sealing groove (22) outside the peripheral hole of the first sealing block (21), and the sealing surface of the second fixed flange (3) is provided with a second sealing groove (31) matched with the first sealing block (21) and a second sealing block (32) matched with the first sealing groove (22), and the first sealing groove (22) and the second sealing groove (31) are provided with sealing pads (4), and the first fixed flange (2) and the second fixed flange (3) of the adjacent two smoke exhaust air pipes (1) are provided with lifting assemblies (5).

2. A single steel-faced floating bead refractory heat-insulating and smoke-preventing air duct according to claim 1, characterized in that: The first sealing block (21) and the first sealing groove (22) of the first fixed flange (2) and the second sealing groove (31) and the second sealing block (32) of the second fixed flange (3) are provided with a plurality of mounting holes, and the mounting holes are provided with bolt members (6).

3. A single steel-faced floating bead refractory heat-insulating and smoke-preventing air pipe according to claim 2, characterized in that: The abutting surface of the sealing pad (4) in the first sealing block (21) and the second sealing groove (31) and the abutting surface of the sealing pad (4) in the second sealing block (32) and the first sealing groove (22) are serrated.

4. A single steel-faced floating bead refractory heat-insulating and smoke-preventing air duct according to claim 1, characterized in that: The smoke exhaust air pipe (1) is a rectangular hollow structure integrally formed by a floating bead refractory insulation board, and the outer side of the floating bead refractory insulation board is fixed with a steel plate through silica gel and welding nails.

5. A single steel-faced floating bead refractory heat-insulating and smoke-preventing air duct according to claim 1, characterized in that: The outer surface of the smoke exhaust air pipe (1) is sprayed with an aerogel composite coating or an inorganic resin layer.

6. A single steel-faced floating bead refractory heat-insulating and smoke-preventing air duct according to claim 1, characterized in that: The lifting assembly (5) comprises a U-shaped frame (51), and the both ends of the frame (51) are provided with fixed blocks (52), and the fixed blocks (52) are provided with circular holes, and the circular holes are provided with threaded rods (53), and the threaded rods (53) are connected with lock nuts (54) through the circular holes.

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