Fireproof air pipe with multi-layer heat insulation structure

Abstract

The utility model provides a fireproof air pipe with a multi-layer heat insulation structure, which comprises an air pipe body, the air pipe body is composed of an outer pipe and an inner pipe, the inner pipe is sleeved inside the outer pipe, fireproof cotton is filled between the outer pipe and the inner pipe, and a coiled pipe is placed inside the fireproof cotton. The space between the inner pipe and the outer pipe is filled with the fireproof cotton, and the coiled pipe is arranged in the fireproof cotton, so that when the air pipe body is used, one end of the coiled pipe is connected with an external water source, the external water source is conveyed through the coiled pipe, and then the fireproof cotton and the air pipe body are cooled. The multi-stage heat insulation of the air pipe body is facilitated, the first threaded connector, the second threaded connector and the connecting cylinder are used in cooperation, the two adjacent coiled pipes can be connected conveniently, and the mode is easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of fireproof air duct technology, and in particular to a fireproof air duct with a multi-layer heat insulation structure. Background Technology

[0002] Air ducts are piping systems used for air transport and distribution, and there are two types: composite air ducts and inorganic air ducts. They can be classified according to cross-sectional shape and material. Stainless steel air duct fabrication involves applying sealant (such as neutral silicone sealant) to seams, rivet seams, and the four corners of flanges. Before applying sealant, surface dust and oil should be removed. According to cross-sectional shape, air ducts can be divided into circular air ducts, rectangular air ducts, and flat oval air ducts, among others. Circular air ducts have the lowest resistance but the largest height and are more complex to manufacture, so rectangular air ducts are the most commonly used. According to material, air ducts can be divided into metal air ducts, composite air ducts, and polymer air ducts.

[0003] Extensive research revealed that existing air ducts have poor fire resistance and generally use only one type of insulation material, which affects their practicality and lifespan.

[0004] Therefore, it is necessary to provide a fireproof air duct with a multi-layer thermal insulation structure to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides a fireproof air duct with a multi-layer heat insulation structure, which solves the problems in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a fireproof air duct with a multi-layer heat insulation structure, including an air duct body composed of an outer pipe and an inner pipe. The inner pipe is sleeved inside the outer pipe, and fireproof cotton is filled between the outer pipe and the inner pipe. A serpentine tube is placed inside the fireproof cotton. A first threaded joint and a second threaded joint are respectively provided at both ends of the serpentine tube. A connecting cylinder is spirally connected to the outer surface of the first threaded joint, and the inner wall of the connecting cylinder is provided with an internal thread. By setting the air duct body as a double-layer structure, filling the space between the inner and outer pipes with fireproof cotton, and placing a serpentine tube inside the fireproof cotton, when the air duct body is in use, one end of the serpentine tube can be connected to an external water source, allowing the external water source to be transported through the serpentine tube, thereby cooling the fireproof cotton and the air duct body. This method is simple to operate, facilitates multi-stage heat insulation of the air duct body, and the cooperation of the first threaded joint, the second threaded joint, and the connecting cylinder facilitates the connection of two adjacent serpentine tubes. This method is simple to operate.

[0007] Preferably, the inner wall of the outer tube is provided with a fixing plate, the surface of the fixing plate is provided with a insertion groove, and the outer surface of the inner tube is provided with a insertion plate. The insertion plate and the insertion groove are slidably inserted into each other. By using the fixing plate, the insertion groove and the insertion plate together, it is easy to quickly install and disassemble the inner tube and the outer tube. During installation, it is only necessary to pass the inner tube through the outer tube, insert the insertion plate into the insertion groove, and then push it to install the outer tube and the inner tube. This method is simple to operate and facilitates the subsequent maintenance and replacement of the duct body.

[0008] Preferably, one end of the inner tube is provided with an annular groove, and the other end of the inner tube is provided with a rectangular retaining ring. By using the annular groove and the rectangular retaining ring together, when two adjacent inner tubes are connected, the rectangular retaining block at one end of the inner tube can be engaged with the annular groove at the end of the other inner tube, thereby completing the connection of the inner tubes.

[0009] Preferably, the inner width of the annular groove is equal to the thickness of the rectangular retaining ring. By setting the inner width of the annular groove to be equal to the thickness of the rectangular retaining ring, it is easier to improve the stability when connecting two adjacent inner tubes.

[0010] Preferably, multiple plug-in plates are provided, and the multiple plug-in plates are symmetrically installed on the surface of the inner tube.

[0011] Preferably, the connecting cylinder is provided with anti-slip protrusions on its peripheral side, which improves the anti-slip performance of the connecting cylinder.

[0012] Preferably, a connecting rod is installed on the outer surface of the outer tube by fasteners. Multiple connecting rods are provided, and fixing holes are opened on the surface of the connecting rods. By providing connecting rods, it is convenient to fix the air duct body by fasteners.

[0013] Compared with related technologies, the fireproof air duct with a multi-layer heat insulation structure provided by this utility model has the following beneficial effects:

[0014] Compared with existing technologies, this fireproof duct with a multi-layered insulation structure features a double-layered duct body. Fireproof cotton is filled between the inner and outer ducts, and a serpentine tube is installed inside the fireproof cotton. When in use, one end of the serpentine tube is connected to an external water source, allowing water to be delivered through the serpentine tube to cool the fireproof cotton and the duct body. This method is simple to operate, facilitates multi-stage insulation of the duct body, and the use of a first threaded joint, a second threaded joint, and a connecting sleeve facilitates the connection of adjacent serpentine tubes. The operation is simple. By using a fixed plate, a plug-in slot, and a plug-in plate in combination, it is easy to quickly install and remove the inner and outer pipes. During installation, simply pass the inner pipe through the outer pipe, insert the plug-in plate into the plug-in slot, and then push it to install the outer and inner pipes. This simple operation facilitates subsequent maintenance and replacement of the duct body. By using annular grooves and rectangular retaining rings in combination, when connecting two adjacent inner pipes, the rectangular retaining block at one end of the inner pipe can be engaged with the annular retaining groove at the end of the other inner pipe, thus completing the connection of the inner pipes.

[0015] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0016] Figure 1 A schematic diagram of a fireproof air duct with a multi-layer heat insulation structure provided by this utility model;

[0017] Figure 2 A schematic diagram of the inner tube structure of a fireproof air duct with a multi-layer heat insulation structure provided by this utility model;

[0018] Figure 3 A schematic diagram of the outer pipe structure of a fireproof air duct with a multi-layer heat insulation structure provided by this utility model;

[0019] Figure 4 A schematic diagram of a serpentine pipe structure for a fireproof air duct with a multi-layer heat insulation structure provided by this utility model;

[0020] Figure 5 A schematic diagram of the connecting cylinder structure of a fireproof air duct with a multi-layer heat insulation structure provided by this utility model.

[0021] Numbering on the map:

[0022] 1. Duct body; 2. Outer duct; 3. Inner duct; 4. Connecting rod; 5. Fireproof cotton; 6. Rectangular retaining ring; 7. Insertion plate; 8. Annular groove; 9. Fixing hole; 10. Fixing plate; 11. Insertion groove; 12. First threaded joint; 13. Connecting cylinder; 14. Serpentine tube; 15. Second threaded joint; 16. Anti-slip protrusions; 17. Internal thread. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] First embodiment:

[0025] Please refer to the following: Figure 1-5 A fireproof duct with a multi-layered heat insulation structure includes a duct body 1, which is composed of an outer pipe 2 and an inner pipe 3. The inner pipe 3 is sleeved inside the outer pipe 2. Fireproof cotton 5 is filled between the outer pipe 2 and the inner pipe 3. A serpentine tube 14 is placed inside the fireproof cotton 5. A first threaded connector 12 and a second threaded connector 15 are respectively provided at both ends of the serpentine tube 14. A connecting cylinder 13 is spirally connected to the outer surface of the first threaded connector 12. The inner wall of the connecting cylinder 13 is provided with an internal thread 17. By setting the duct body 1 as a double-layered structure... The structure includes fireproof cotton 5 filling the space between the inner tube 3 and the outer tube 2, and a serpentine tube 14 installed inside the fireproof cotton 5. When the duct body 1 is in use, one end of the serpentine tube 14 is connected to an external water source, allowing the external water source to be transported through the serpentine tube 14, thereby cooling the fireproof cotton 5 and the duct body 1. This method is simple to operate and facilitates multi-stage heat insulation of the duct body 1. Furthermore, the use of the first threaded connector 12, the second threaded connector 15, and the connecting cylinder 13 facilitates the connection of two adjacent serpentine tubes 14. This method is also simple to operate.

[0026] The working principle of the fireproof air duct with a multi-layer heat insulation structure provided by this utility model is as follows:

[0027] This type of fireproof air duct with a multi-layered heat insulation structure features a double-layered duct body 1. Fireproof cotton 5 is filled between the inner pipe 3 and the outer pipe 2. A serpentine tube 14 is installed inside the fireproof cotton 5. When the air duct body 1 is in use, one end of the serpentine tube 14 is connected to an external water source, allowing water to be transported through the serpentine tube 14 to cool the fireproof cotton 5 and the air duct body 1. This method is simple to operate and facilitates multi-stage heat insulation of the air duct body 1. Furthermore, the use of the first threaded connector 12, the second threaded connector 15, and the connecting sleeve 13 facilitates the connection of adjacent serpentine tubes 14. The design is simple. By using the fixing plate 10, the insertion slot 11, and the insertion plate 7 together, the inner tube 3 and the outer tube 2 can be quickly installed and disassembled. During installation, simply pass the inner tube 3 through the outer tube 2, insert the insertion plate 7 into the insertion slot 11, and then push it to install the outer tube 2 and the inner tube 3. This method is simple to operate and facilitates subsequent maintenance and replacement of the duct body 1. By using the annular groove 8 and the rectangular retaining ring 6 together, when connecting two adjacent inner tubes 3, the rectangular retaining block at one end of the inner tube 3 can be engaged with the annular groove 8 at the end of the other inner tube 3, thus completing the connection of the inner tubes 3.

[0028] Compared with related technologies, the fireproof air duct with a multi-layer heat insulation structure provided by this utility model has the following beneficial effects:

[0029] This type of fireproof air duct with a multi-layered heat insulation structure features a double-layered duct body 1. Fireproof cotton 5 is filled between the inner pipe 3 and the outer pipe 2. A serpentine tube 14 is installed inside the fireproof cotton 5. When the air duct body 1 is in use, one end of the serpentine tube 14 is connected to an external water source, allowing water to be transported through the serpentine tube 14 to cool the fireproof cotton 5 and the air duct body 1. This method is simple to operate and facilitates multi-stage heat insulation of the air duct body 1. Furthermore, the use of the first threaded connector 12, the second threaded connector 15, and the connecting sleeve 13 facilitates the connection of adjacent serpentine tubes 14. The design is simple. By using the fixing plate 10, the insertion slot 11, and the insertion plate 7 together, the inner tube 3 and the outer tube 2 can be quickly installed and disassembled. During installation, simply pass the inner tube 3 through the outer tube 2, insert the insertion plate 7 into the insertion slot 11, and then push it to install the outer tube 2 and the inner tube 3. This method is simple to operate and facilitates subsequent maintenance and replacement of the duct body 1. By using the annular groove 8 and the rectangular retaining ring 6 together, when connecting two adjacent inner tubes 3, the rectangular retaining block at one end of the inner tube 3 can be engaged with the annular groove 8 at the end of the other inner tube 3, thus completing the connection of the inner tubes 3.

[0030] Second embodiment:

[0031] Please refer to the following: Figure 1-5 Based on the first embodiment of this application, which provides a fireproof air duct with a multi-layered heat insulation structure, the second embodiment of this application proposes another fireproof air duct with a multi-layered heat insulation structure. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0032] Based on Example 1, see [link / reference] Figure 1-5 The inner wall of the outer tube 2 is provided with a fixing plate 10, and the surface of the fixing plate 10 is provided with a insertion groove 11. The outer surface of the inner tube 3 is provided with a insertion plate 7, which is slidably inserted into the insertion groove 11. By using the fixing plate 10, the insertion groove 11 and the insertion plate 7 together, it is easy to quickly install and disassemble the inner tube 3 and the outer tube 2. During installation, it is only necessary to pass the inner tube 3 through the outer tube 2, insert the insertion plate 7 into the insertion groove 11, and then push it to install the outer tube 2 and the inner tube 3. This method is simple to operate and facilitates the subsequent maintenance and replacement of the duct body 1.

[0033] Based on Example 1, see [link / reference] Figure 1-5One end of the inner tube 3 is provided with an annular groove 8, and the other end of the inner tube 3 is provided with a rectangular retaining ring 6. By using the annular groove 8 and the rectangular retaining ring 6 together, when two adjacent inner tubes 3 are connected, the rectangular retaining block at one end of the inner tube 3 can be engaged with the annular groove 8 at the end of the other inner tube 3, thereby completing the connection of the inner tubes 3.

[0034] Based on Example 1, see [link / reference] Figure 1-5 The inner width of the annular groove 8 is equal to the thickness of the rectangular retaining ring 6. By setting the inner width of the annular groove 8 to be equal to the thickness of the rectangular retaining ring 6, it is easier to improve the stability when two adjacent inner tubes 3 are connected.

[0035] Based on Example 1, see [link / reference] Figure 1-5 Multiple plug-in plates 7 are provided, and multiple plug-in plates 7 are symmetrically installed on the surface of the inner tube 3.

[0036] Based on Example 1, see [link / reference] Figure 1-5 The connecting cylinder 13 is provided with anti-slip protrusions 16 on its peripheral side, which improves the anti-slip performance of the connecting cylinder 13.

[0037] Based on Example 1, see [link / reference] Figure 1-5 The outer surface of the outer tube 2 is fitted with a connecting rod 4 by fasteners. Multiple connecting rods 4 are provided, and the surface of the connecting rod 4 is provided with fixing holes 9. By providing the connecting rod 4, it is easy to fix the air duct body 1 by fasteners.

[0038] It should be noted that all components used in this application are standard parts that can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The mechanical parts and electrical equipment adopt conventional models in the prior art. The circuit connection adopts conventional connection methods in the prior art. The electrical equipment is connected to an external safe power source. These will not be described in detail here.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fireproof air duct with a multi-layer heat insulation structure, comprising an air duct body (1), characterized in that, The duct body (1) is composed of an outer tube (2) and an inner tube (3). The inner tube (3) is fitted inside the outer tube (2). Fireproof cotton (5) is filled between the outer tube (2) and the inner tube (3). A serpentine tube (14) is placed inside the fireproof cotton (5). A first threaded connector (12) and a second threaded connector (15) are respectively provided at both ends of the serpentine tube (14). A connecting cylinder (13) is spirally connected to the outer surface of the first threaded connector (12). An internal thread (17) is provided on the inner wall of the connecting cylinder (13).

2. A fireproof air duct with a multi-layer heat insulation structure according to claim 1, characterized in that, The inner wall of the outer tube (2) is provided with a fixing plate (10), and the surface of the fixing plate (10) is provided with a plug groove (11). The outer surface of the inner tube (3) is provided with a plug plate (7), and the plug plate (7) is slidably plugged into the plug groove (11).

3. A fireproof air duct with a multi-layer heat insulation structure according to claim 1, characterized in that, One end of the inner tube (3) is provided with an annular groove (8), and the other end of the inner tube (3) is provided with a rectangular retaining ring (6).

4. A fireproof air duct with a multi-layer heat insulation structure according to claim 3, characterized in that, The inner width of the annular groove (8) is equal to the thickness of the rectangular retaining ring (6).

5. A fireproof air duct with a multi-layer heat insulation structure according to claim 2, characterized in that, Multiple plug-in plates (7) are provided, and multiple plug-in plates (7) are symmetrically installed on the surface of the inner tube (3).

6. A fireproof air duct with a multi-layer heat insulation structure according to claim 1, characterized in that, The connecting cylinder (13) has anti-slip protrusions (16) on its peripheral side.

7. A fireproof air duct with a multi-layer heat insulation structure according to claim 1, characterized in that, The outer tube (2) has a connecting rod (4) installed on its outer surface by fasteners. Multiple connecting rods (4) are provided, and the surface of the connecting rod (4) is provided with fixing holes (9).

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