Special composite air pipe for fire resistance, heat insulation and smoke prevention and exhaust

Abstract

The utility model discloses a fire-resistant heat-insulating composite air pipe special for smoke prevention and exhaust, which relates to the technical field of fire-fighting smoke exhaust pipelines and comprises an outer shell, an inner shell and a heat-insulating layer. The composite air pipe is composed of the outer shell, the inner shell and the heat insulation layer, the space formed by the inner shell is a flue gas dredging pipeline and is generally made of galvanized plates, the outer shell is generally made of glass wool color steel plates, and the heat insulation layer is made of rock wool. The surface of the first connecting block and the surface of the second connecting block are each covered with a layer of glass wool color steel plate, and rubber pads are symmetrically arranged on the second connecting block and used in cooperation with the first connecting block. When the adjacent composite air pipes need to be assembled, the adjacent composite air pipes can be rapidly connected through the first connecting block, the second connecting block, the first fixing part and the second fixing part which are arranged at the two ends of the outer shell, and therefore the disassembly and assembly efficiency of the composite air pipes is improved.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting smoke exhaust duct technology, specifically to a fire-resistant, heat-insulating, smoke-proof composite duct. Background Technology

[0002] Fire exhaust ducts are a key component of building fire protection systems, primarily designed to remove smoke and heat during a fire, ensuring safe evacuation and facilitating firefighting operations. These ducts are typically connected to the building's mechanical smoke extraction system, which consists of fans, ductwork, vents, and control devices. During a fire, high temperatures and smoke are major obstacles to evacuation. Fire exhaust ducts, through their efficient fan systems, draw smoke from the fire source area and discharge it outdoors through ductwork, maintaining clear evacuation routes and firefighting work areas. This helps reduce the impact of smoke on visibility, minimizing visibility obstruction at the fire scene and allowing personnel to locate safe exits more quickly.

[0003] Because of the different installation locations, air ducts are generally manufactured in the factory and then transported to the site for installation. However, most existing air ducts are connected by flanges, which makes the assembly, disassembly and maintenance process cumbersome. In some places with limited space, installation and disassembly will consume a lot of time and manpower, resulting in low efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a fire-resistant, heat-insulating, smoke-proof composite air duct to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A fire-resistant, heat-insulating, smoke-proof composite duct includes an outer shell, an inner shell, and a heat insulation layer. The heat insulation layer is located between the outer shell and the inner shell. A first connecting block and a second connecting block are fixedly connected to both ends of the outer shell. The first connecting block is provided with a first connecting groove, a second connecting groove, a first insertion groove, and a second insertion groove. A first fixing block and a second fixing block are fixedly connected to the second connecting block. The first fixing blocks are symmetrically arranged. A first fixing component and a second fixing component are connected to the first connecting block. Both the first fixing component and the second fixing component are used to fix the first connecting block and the second connecting block.

[0007] The composite duct consists of an outer shell, an inner shell, and an insulation layer. The space formed by the inner shell serves as a duct for venting flue gas and is typically made of galvanized steel sheet. The outer shell is generally made of glass wool and color steel sheet, while the insulation layer is made of rock wool. Both the first and second connecting blocks are covered with a layer of glass wool and color steel sheet. The second connecting block also has symmetrically placed rubber pads that work in conjunction with the first connecting block. When assembling adjacent composite ducts, they can be quickly connected using the first connecting block, second connecting block, first fixing component, and second fixing component located at both ends of the outer shell, thereby improving the efficiency of assembly and disassembly of the composite duct.

[0008] A further improvement of the present invention is that: the first fixing component includes a first locking block, the first locking block is slidably connected to the first connecting groove and a pressure spring is fixedly connected to the first locking block, the other end of the pressure spring is fixedly connected to the first connecting block, a plurality of grooves are provided on the first locking block, a limit block is fixedly connected in the groove, a limit groove is provided on the first fixing block, and the first fixing block is slidably connected to the first connecting block through the first insertion groove.

[0009] Using the above technical solution, when installation is required, the first locking block, which is slidably connected to the first connecting block via the first connecting groove, is pressed. At this time, the pressure spring fixedly connected to the first locking block is in a compressed state. Then, the first fixing block is inserted into the first connecting groove through the first insertion groove. The first locking block is then released, and it resets under the action of the pressure spring, thereby inserting the limiting block fixedly connected to the first locking block into the limiting groove opened on the first fixing block. Simultaneously, the second fixing block is inserted into the second insertion groove, fixing the first connecting block and the second connecting block, thus quickly fixing adjacent composite air ducts. When disassembly is required, the operation is reversed.

[0010] A further improvement of the present invention is that the second fixing component includes a second locking block, the second locking block is slidably connected to the second connecting groove, the second fixing block has an inner groove, the bottom of the first connecting block is provided with a bolt, the second locking block has a through groove, and the bolt is threadedly connected to the second locking block through the through groove.

[0011] Using the above technical solution, after the first connecting block and the second connecting block are fixed by the first fixing component, the second locking block is moved so that one end of the second locking block is inserted into the inner groove opened on the second fixing block. Then, the bolt threaded to the bottom of the first connecting block is rotated, so that the bolt is threadedly connected to the second locking block through the through groove, thereby fixing the position of the second locking block. This enhances the fixing effect between the first connecting block and the second connecting block while also allowing for quick disassembly of the first and second connecting blocks.

[0012] A further improvement of the present invention is that: a slot is provided on the first connecting block, a connecting block is slidably connected in the slot, a spring is fixedly connected on the connecting block, one end of the connecting block near the spring is columnar, the other end of the connecting block is square columnar, and a mating groove is provided on the first slot.

[0013] The above technical solution addresses the issue that the first fixing component, which can be easily disengaged by pressing the first locking block, is prone to accidental activation. By providing a locking groove on the first connecting block, with its two ends communicating with the first and second connecting slots respectively, when the second locking block is fixed with bolts, the bolts move along their axis. Therefore, when fixing the second locking block, twisting the bolts compresses the slidingly connected cylindrical connecting block within the locking groove. At this time, the spring spring is stretched, and the bolts press against the connecting block, causing it to engage with the mating groove in the first locking block, thus fixing the first locking block in place. This prevents accidental activation and eliminates the need for excessive steps, thereby improving the efficiency of disassembly and assembly.

[0014] A further improvement of this utility model is that the limiting block is provided with an inclined surface.

[0015] By adopting the above technical solution, a slope is provided on one side of the limiting block, so that the first fixing block can be inserted into the first insertion slot without squeezing the first locking block. When the first fixing block is inserted, it will squeeze the slope, thereby squeezing the pressure spring. When the limiting slot on the first fixing block moves to the limiting block, the limiting block will be inserted into the limiting slot under the action of the pressure spring, thus simplifying the installation steps.

[0016] A further improvement of this utility model is that the bolts threadedly connected to the bottom of the first connecting block are fireproof bolts.

[0017] By adopting the above technical solution, the bolts that are threadedly connected to the bottom of the first connecting block are fireproof bolts, which can maintain the integrity and stability of the structure for a certain period of time in the event of a fire.

[0018] A further improvement of this utility model is that the first and second card blocks are made of stainless steel.

[0019] The above technical solution is adopted because both the first and second locking blocks are partially located on the outside. The first and second locking blocks are made of stainless steel because stainless steel has high-temperature strength and excellent heat resistance.

[0020] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0021] 1. This utility model provides a fire-resistant, heat-insulating, smoke-exhausting composite duct. The composite duct consists of an outer shell, an inner shell, and a heat insulation layer. The space formed by the inner shell serves as a duct for venting smoke and is generally made of galvanized steel sheet. The outer shell is generally made of glass wool corrugated steel sheet, and the heat insulation layer is made of rock wool. Both the first and second connecting blocks are covered with a layer of glass wool corrugated steel sheet. Rubber pads are symmetrically arranged on the second connecting block to cooperate with the first connecting block. When assembling adjacent composite ducts, they can be quickly connected using the first connecting block, second connecting block, first fixing component, and second fixing component at both ends of the outer shell, thereby improving the assembly and disassembly efficiency of the composite duct.

[0022] 2. This utility model provides a fire-resistant, heat-insulating, smoke-proof composite duct. During installation, the first locking block, slidably connected to the first connecting block via the first connecting groove, is pressed. At this time, the pressure spring fixedly connected to the first locking block is compressed. Then, the first fixing block is inserted into the first connecting groove via the first insertion groove. Releasing the first locking block causes it to reset under the pressure spring, thereby inserting the limiting block fixedly connected to the first locking block into the limiting groove on the first fixing block. Simultaneously, the second fixing block is inserted into the second insertion groove, fixing the first connecting block and the second connecting block. This allows for quick and easy fixing of adjacent composite ducts. Disassembly is performed in reverse.

[0023] 3. This utility model provides a fire-resistant, heat-insulating, smoke-proof composite duct. After the first connecting block and the second connecting block are fixed by the first fixing component, the second locking block is moved so that one end of the second locking block is inserted into the inner groove opened on the second fixing block. Then, the bolt threaded to the bottom of the first connecting block is rotated, so that the bolt is threadedly connected to the second locking block through the through groove, thereby fixing the position of the second locking block. This enhances the fixing effect between the first connecting block and the second connecting block while also allowing for quick disassembly of the first and second connecting blocks. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a first structural schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the second structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the first cross-section of the present invention;

[0028] Figure 4 This is a schematic diagram of the second cross-section structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the first partial structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the second partial structure of the present invention.

[0031] In the diagram: 1. First connecting block; 2. Second connecting block; 3. First connecting groove; 4. Second connecting groove; 5. First insertion groove; 6. Second insertion groove; 7. First fixing block; 8. Second fixing block; 9. First locking block; 10. Pressure spring; 11. Groove; 12. Limiting block; 13. Limiting groove; 14. Second locking block; 15. Inner groove; 16. Through groove; 17. Locking groove; 18. Connecting block; 19. Elastic spring; 20. Mating groove; 21. Inclined surface; 22. Fireproof bolt. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to embodiments:

[0033] Example 1

[0034] like Figure 1 and Figure 2 As shown, this utility model provides a fire-resistant, heat-insulating, smoke-proof composite duct, including an outer shell, an inner shell, and a heat insulation layer. The heat insulation layer is located between the outer shell and the inner shell. A first connecting block 1 and a second connecting block 2 are fixedly connected to both ends of the outer shell. A first connecting groove 3, a second connecting groove 4, a first insertion groove 5, and a second insertion groove 6 are respectively provided on the first connecting block 1. A first fixing block 7 and a second fixing block 8 are fixedly connected to the second connecting block 2. The first fixing blocks 7 are symmetrically arranged. A first fixing component and a second fixing component are respectively connected to the first connecting block 1. Both the first fixing component and the second fixing component are used to fix the first connecting block 1 and the second connecting block 2.

[0035] In this embodiment, the composite duct consists of an outer shell, an inner shell, and a heat insulation layer. The space formed by the inner shell serves as a duct for venting flue gas and is typically made of galvanized steel sheet. The outer shell is generally made of glass wool corrugated steel sheet, and the heat insulation layer is made of rock wool. Both the first connecting block 1 and the second connecting block 2 are covered with a layer of glass wool corrugated steel sheet. Rubber pads are symmetrically arranged on the second connecting block 2 to cooperate with the first connecting block 1. When adjacent composite ducts need to be assembled, they can be quickly connected using the first connecting block 1, the second connecting block 2, the first fixing component, and the second fixing component at both ends of the outer shell, thereby improving the assembly and disassembly efficiency of the composite duct.

[0036] Example 2

[0037] like Figure 3 and Figure 4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the first fixing component includes a first locking block 9, the first locking block 9 is slidably connected to the first connecting groove 3 and a pressure spring 10 is fixedly connected to the first locking block 9, the other end of the pressure spring 10 is fixedly connected to the first connecting block 1, a plurality of grooves 11 are provided on the first locking block 9, a limiting block 12 is fixedly connected in the grooves 11, a limiting groove 13 is provided on the first fixing block 7, and the first fixing block 7 is slidably connected to the first connecting block 1 through the first insertion groove 5.

[0038] When installation is required, press the first locking block 9, which is slidably connected to the first connecting block 1 via the first connecting groove 3. At this time, the pressure spring 10, which is fixedly connected to the first locking block 9, is in a compressed state. Then, insert the first fixing block 7 into the first connecting groove 3 through the first insertion groove 5. Then, release the first locking block 9, which will reset under the action of the pressure spring 10, thereby inserting the limiting block 12 fixedly connected to the first locking block 9 into the limiting groove 13 opened on the first fixing block 7. At the same time, the second fixing block 8 will be inserted into the second insertion groove 6, fixing the first connecting block 1 and the second connecting block 2, thus quickly fixing adjacent composite air ducts. When disassembly is required, simply reverse the operation.

[0039] Example 3

[0040] like Figure 4 and Figure 5 As shown, based on Embodiment 2, this utility model provides a technical solution: preferably, the second fixing component includes a second locking block 14, the second locking block 14 is slidably connected to the second connecting groove 4, the second fixing block 8 is provided with an inner groove 15, the bottom of the first connecting block 1 is provided with a bolt, the second locking block 14 is provided with a through groove 16, and the bolt is threadedly connected to the second locking block 14 through the through groove 16.

[0041] After the first connecting block 1 and the second connecting block 2 are fixed by the first fixing component, the second locking block 14 is moved so that one end of the second locking block 14 is inserted into the inner groove 15 opened on the second fixing block 8. Then, the bolt threaded to the bottom of the first connecting block 1 is rotated so that the bolt is threaded to the second locking block 14 through the through groove 16, thereby fixing the position of the second locking block 14. This enhances the fixing effect between the first connecting block 1 and the second connecting block 2, and also allows for quick disassembly of the first connecting block 1 and the second connecting block 2.

[0042] Example 4

[0043] like Figure 4 and Figure 6As shown, based on embodiment 3, this utility model provides a technical solution: preferably, the first connecting block 1 is further provided with a slot 17, a connecting block 18 is slidably connected in the slot 17, a spring 19 is fixedly connected to the connecting block 18, one end of the connecting block 18 near the spring 19 is columnar, the other end of the connecting block 18 is square columnar, and the first slot 9 is provided with a mating groove 20.

[0044] Because the first fixing component can be released by pressing the first locking block 9, it is easily accidentally activated. By providing a locking groove 17 on the first connecting block 1, with both ends of the groove 17 communicating with the first connecting groove 3 and the second connecting groove 4 respectively, when the second locking block 14 is fixed by bolts, the bolts move along their axis. Therefore, when fixing the second locking block 14, turning the bolts will compress the slidably connected cylindrical connecting block 18 within the locking groove 17. At this time, the elastic spring 19 is in a stretched state, and the bolts will press against the connecting block 18, causing the connecting block 18 to push into the mating groove 20 within the first locking block 9, thus fixing the first locking block 9. This prevents accidental activation and eliminates the need for excessive steps, thereby improving the efficiency of assembly and disassembly.

[0045] like Figure 6 As shown, preferably, the limiting block 12 is provided with an inclined surface 21.

[0046] By providing a slope 21 on one side of the limiting block 12, the first fixing block 7 can be inserted into the first insertion slot 5 without squeezing the first locking block 9. When the first fixing block 7 is inserted, it will squeeze the slope 21, thereby squeezing the pressure spring 10. When the limiting slot 13 on the first fixing block 7 moves onto the limiting block 12, the limiting block 12 will be inserted into the limiting slot 13 under the action of the pressure spring 10, thus simplifying the installation steps.

[0047] like Figure 4 and Figure 5 As shown, preferably, the bolts threadedly connected to the bottom of the first connecting block 1 are fireproof bolts 22.

[0048] By setting the bolts threadedly connected to the bottom of the first connecting block 1 as fireproof bolts 22, the fireproof bolts 22 can maintain the integrity and stability of the structure for a certain period of time in the event of a fire.

[0049] like Figure 2 As shown, preferably, the first card block 9 and the second card block 14 are made of stainless steel.

[0050] Since both the first card block 9 and the second card block 14 have parts located on the outside, the material of the first card block 9 and the second card block 14 is stainless steel because stainless steel has high temperature strength and excellent heat resistance.

[0051] The working principle of this fire-resistant, heat-insulating, smoke-proof composite duct will be explained in detail below.

[0052] like Figure 1 - Figure 6As shown, the composite duct consists of an outer shell, an inner shell, and an insulation layer. The space formed by the inner shell serves as a duct for venting flue gas and is typically made of galvanized steel sheet. The outer shell is generally made of glass wool corrugated steel sheet, and the insulation layer is made of rock wool. Both the first connecting block 1 and the second connecting block 2 are covered with a layer of glass wool corrugated steel sheet. Rubber pads are symmetrically arranged on the second connecting block 2 to cooperate with the first connecting block 1. When adjacent composite ducts need to be assembled, they can be quickly connected using the first connecting block 1, the second connecting block 2, the first fixing component, and the second fixing component located at both ends of the outer shell. When installation is required, press the first locking block 9, which is slidably connected to the first connecting block 1 via the first connecting groove 3. At this time, the pressure spring 10, which is fixedly connected to the first locking block 9, is in a compressed state. Then, insert the first fixing block 7 into the first connecting groove 3 through the first insertion groove 5. Then, release the first locking block 9, which will reset under the action of the pressure spring 10, thereby inserting the limiting block 12 fixedly connected to the first locking block 9 into the limiting groove 13 opened on the first fixing block 7. At the same time, the second fixing block 8 will be inserted into the second insertion groove 6, fixing the first connecting block 1 and the second connecting block 2, thus quickly fixing adjacent composite air ducts. When disassembly is required, simply reverse the operation. After fixing the first connecting block 1 and the second connecting block 2 through the first fixing component, move the second locking block 14 so that one end of the second locking block 14 is inserted into the inner groove 15 opened on the second fixing block 8. Then, rotate the bolt threaded to the bottom of the first connecting block 1, so that the bolt is threadedly connected to the second locking block 14 through the through groove 16, thereby fixing the position of the second locking block 14. This enhances the fixing effect between the first connecting block 1 and the second connecting block 2 while allowing for quick disassembly of both. Because the first fixing component can be released by pressing the first locking block 9, it is easily accidentally activated. However, by providing a locking groove 17 on the first connecting block 1, with both ends of the groove 17 communicating with the first connecting groove 3 and the second connecting groove 4 respectively, when the second locking block 14 is fixed with bolts, the bolts move along their axis. Therefore, when fixing the second locking block 14, twisting the bolts will compress the slidingly connected cylindrical connecting block 18 within the locking groove 17. At this time, the elastic spring 19 is in a stretched state, and the bolts will press against the connecting block 18, causing the connecting block 18 to push into the mating groove 20 within the first locking block 9, thus fixing the first locking block 9. This prevents accidental activation and eliminates the need for excessive steps, thereby improving the efficiency of assembly and disassembly.By providing a bevel 21 on one side of the limiting block 12, the first fixing block 7 can be inserted into the first insertion slot 5 without compressing the first locking block 9. When the first fixing block 7 is inserted, it compresses the bevel 21, thereby compressing the pressure spring 10. When the limiting slot 13 on the first fixing block 7 moves onto the limiting block 12, the limiting block 12 will be inserted into the limiting slot 13 under the action of the pressure spring 10, thus simplifying the installation process. By setting the bolts threadedly connecting the bottom of the first connecting block 1 to fireproof bolts 22, the fireproof bolts 22 can maintain the integrity and stability of the structure for a certain period of time in the event of a fire. Since both the first locking block 9 and the second locking block 14 have parts located on the outside, the first locking block 9 and the second locking block 14 are made of stainless steel because stainless steel has high-temperature strength and excellent heat resistance.

[0053] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A fire-resistant, heat-insulating, smoke-proof composite duct, characterized in that, The device includes an outer shell, an inner shell, and a heat insulation layer. The heat insulation layer is located between the outer shell and the inner shell. The two ends of the outer shell are respectively fixedly connected to a first connecting block (1) and a second connecting block (2). The first connecting block (1) is respectively provided with a first connecting groove (3), a second connecting groove (4), a first insertion groove (5), and a second insertion groove (6). The second connecting block (2) is respectively fixedly connected to a first fixing block (7) and a second fixing block (8). The first fixing blocks (7) are symmetrically arranged. The first connecting block (1) is respectively connected to a first fixing component and a second fixing component. The first fixing component and the second fixing component are both used to fix the first connecting block (1) and the second connecting block (2).

2. The fire-resistant, heat-insulating, smoke-proof composite duct according to claim 1, characterized in that: The first fixing component includes a first locking block (9), which is slidably connected to the first connecting groove (3) and a pressure spring (10) is fixedly connected to the first locking block (9). The other end of the pressure spring (10) is fixedly connected to the first connecting block (1). The first locking block (9) has several grooves (11), and a limit block (12) is fixedly connected in the groove (11). The first fixing block (7) has a limit groove (13), and the first fixing block (7) is slidably connected to the first connecting block (1) through the first insertion groove (5).

3. The fire-resistant, heat-insulating, smoke-proof composite duct according to claim 2, characterized in that: The second fixing component includes a second locking block (14), which is slidably connected to the second connecting groove (4). The second fixing block (8) has an inner groove (15). The bottom of the first connecting block (1) is provided with a bolt. The second locking block (14) has a through groove (16), and the bolt is threadedly connected to the second locking block (14) through the through groove (16).

4. The fire-resistant, heat-insulating, smoke-proof composite duct according to claim 3, characterized in that: The first connecting block (1) is also provided with a slot (17), and a connecting block (18) is slidably connected in the slot (17). A spring (19) is fixedly connected to the connecting block (18). One end of the connecting block (18) near the spring (19) is set in a columnar shape, and the other end of the connecting block (18) is set in a square columnar shape. The first connecting block (9) is provided with a mating groove (20).

5. The fire-resistant, heat-insulating, smoke-proof composite duct according to claim 4, characterized in that: The limiting block (12) is provided with an inclined surface (21).

6. The fire-resistant, heat-insulating, smoke-proof composite duct according to claim 5, characterized in that: The bolts threadedly connected to the bottom of the first connecting block (1) are fireproof bolts (22).

7. The fire-resistant, heat-insulating, smoke-proof composite duct according to claim 6, characterized in that: The first card block (9) and the second card block (14) are made of stainless steel.

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