Flame-retardant heat-preservation flexible composite air pipe

Abstract

The utility model discloses a flame-retardant heat preservation flexible composite air pipe, which relates to the technical field of air pipes and comprises an air pipe body, an inner protection layer is arranged on the inner wall of an inner cavity of the air pipe body, connecting columns are sequentially arranged on the periphery of the outer wall of the air pipe body from inside to outside, and an outer sleeve is sleeved on the outer wall of the air pipe body through the connecting columns. A sound insulation cotton filling layer is arranged between the outer wall of the air pipe body and the inner wall of the outer sleeve, fixing rods are sequentially and vertically arranged on the left side and the right side of the top of the outer sleeve from inside to outside, and top plates are arranged on the tops of the fixing rods. The sound insulation cotton filling layer can achieve the effects of sound insulation and noise reduction and reduce outward broadcasting of sound generated by flowing of air flow in the air pipe body, meanwhile, the polyurethane foam plastic layer is arranged on the inner wall of the air pipe body, polyurethane foam plastic belongs to the main component of polystyrene foam, the cured polyurethane foam material has good sound insulation and sound absorption performance, and therefore the air pipe is good in sound insulation and noise reduction performance. And moreover, the sound-insulation and noise-reduction composite board is corrosion-resistant, waterproof and flame-retardant, and can be effectively matched with the sound-insulation cotton filling layer for sound insulation and noise reduction

Description

Technical Field

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

[0002] Composite air duct is one type of air duct, and air duct is an important component of indoor large-scale air-conditioning system. It plays the role of air transportation, which can make indoor large-scale air-conditioning system operate stably and effectively. However, the existing composite air duct still has some shortcomings, such as its sound insulation effect is poor. When the air flow flows rapidly inside the composite air duct, it will produce abnormal noise, which will affect the surrounding environment and generate noise. At the same time, the existing composite air duct does not have the function of installation and fixing. During installation, an external fixing frame is required to install it, which is very inconvenient. At the same time, it cannot be effectively protected during transportation and handling. Once a collision occurs and it is damaged, the composite air duct cannot be used normally. For this reason, we propose a flame retardant, heat-insulating and flexible composite air duct. Utility Model Content

[0003] The purpose of the present invention is to provide a flame retardant, heat-insulating and flexible composite air duct to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A flame-retardant and heat-insulating flexible composite air duct comprises an air duct body, an inner protective layer is provided on the inner wall of the inner cavity of the air duct body, connecting columns are provided on all sides of the outer wall of the air duct body from the inside to the outside, an outer sleeve is provided on the outer wall of the air duct body through the connecting columns, a sound insulation cotton filling layer is provided between the outer wall of the air duct body and the inner wall of the outer sleeve, fixing rods are vertically provided on the left and right sides of the top of the outer sleeve from the inside to the outside, a top plate is provided on the top of the fixing rods, the inner protective layer comprises a flame-retardant layer, the inner wall of the flame-retardant layer is provided with an insulation layer, the inner wall of the insulation layer is provided with an insulation layer, the inner wall of the insulation layer is provided with a polyurethane foam plastic layer, the fixing rod comprises a positioning rod, a threaded hole is provided on the top of the inner cavity of the positioning rod, the top of the fixing rod is threadedly connected to the external threaded rod through the threaded hole, and the bottom of the external threaded rod is fixedly connected to the bottom of the top plate.

[0006] Furthermore: mounting plates are provided at the bottom of the left and right sides of the fixing rod, and bolts are provided between the top of the mounting plates and the top of the outer sleeve.

[0007] Furthermore: the inner angles between the external threaded rod and the top plate are both set to ninety degrees, and the length of the external threaded rod is greater than the length of the positioning rod.

[0008] Furthermore: the top plates are all configured as circular top plates, and mounting holes are vertically penetrated on all four sides of the top of the top plates.

[0009] Furthermore: a groove is provided on the top of the top plate, a rubber pad is provided in the groove, and the bottom of the rubber pad is fixedly bonded to the bottom of the inner cavity of the groove.

[0010] Furthermore: the thickness of the rubber pad is greater than the depth of the groove, and the rubber pad is configured as a flexible rubber pad.

[0011] Furthermore: the flame retardant layer is set as a polyimide fiber layer, and the thermal insulation layer is set as a polyethylene foam material thermal insulation layer.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The flame-retardant and heat-insulating flexible composite air duct is provided with an outer sleeve on the outer periphery of the air duct body through a connecting column, and a sound insulation cotton filling layer is provided between the air duct body and the outer sleeve. The sound insulation cotton filling layer can achieve the effect of sound insulation and noise reduction, and reduce the outward transmission of sound generated by the air flow inside the air duct body. At the same time, a polyurethane foam plastic layer is provided on the inner wall of the air duct body. The polyurethane foam plastic is the main component of the foam glue. The solidified polyurethane foam material has good sound insulation and sound absorption properties, and is also anti-corrosion, waterproof and flame-retardant. It can effectively cooperate with the sound insulation cotton filling layer to achieve sound insulation and noise reduction; the external outer sleeve can protect the air duct body, and can prevent the air duct body from directly colliding with external objects or walls during transportation or handling; fixing rods are evenly provided on both sides of the top of the outer sleeve, and the fixing rods can be adjusted in length, and a top plate is provided on the top of the fixing rods, through which the entire air duct can be installed and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the air duct body and the inner protective layer of the utility model;

[0016] Figure 3 This is a schematic diagram of the fixing rod structure of the utility model.

[0017] In the figure: 1. Duct body; 2. Inner protective layer; 3. Connecting column; 4. Outer sleeve; 5. Sound insulation cotton filling layer; 6. Fixing rod; 7. Mounting block; 8. Bolt; 9. Top plate; 10. Flame retardant layer; 11. Heat insulation layer; 12. Thermal insulation layer; 13. Polyurethane foam plastic layer; 14. Positioning rod; 15. Threaded hole; 16. Externally threaded rod; 17. Mounting hole; 18. Rubber pad. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1:

[0020] See also Figure 1-3 The utility model provides a technical solution: a flame retardant and heat-insulating flexible composite air duct, comprising an air duct body 1, an inner wall of the inner cavity of the air duct body 1 is provided with an inner protective layer 2, and the inner protective layer 2 can effectively protect the air duct body 1, and the outer wall of the air duct body 1 is provided with connecting columns 3 from the inside to the outside in sequence. The outer wall of the air duct body 1 is sleeved with an outer sleeve 4 through the connecting columns 3. The outer sleeve 4 can effectively protect the air duct body 1 during transportation and handling of the air duct, so as to avoid it being directly damaged by collision. A sound insulation cotton filling layer 5 is provided between the outer wall of the air duct body 1 and the inner wall of the outer sleeve 4. The sound insulation cotton filling layer 5 can play a role in sound insulation and noise reduction, reducing the sound generated by the air flow inside the air duct body 1. The left and right sides of the top of the outer sleeve 4 are vertically provided with fixing rods 6 from the inside to the outside in sequence, and the top of the fixing rods 6 is provided with a top plate 9. The top plate 9 can be connected to the wall, so that the overall air duct is installed and fixed. The inner protective layer 2 includes a flame retardant layer 10 The flame retardant layer 10 can play a flame retardant protection role. The inner wall of the flame retardant layer 10 is provided with a heat insulation layer 11. The heat insulation layer 11 can play a heat insulation protection role to prevent the external temperature from affecting the inner cavity of the air duct body 1. The inner wall of the heat insulation layer 11 is provided with a heat preservation layer 12. The inner wall of the heat preservation layer 12 is provided with a polyurethane foam plastic layer 13. Polyurethane foam plastic is the main component of foam glue. The solidified polyurethane foam material has good sound insulation and sound absorption properties, and is also anti-corrosion, waterproof and flame retardant. It can effectively cooperate with the sound insulation cotton filling layer 5 to perform sound insulation and noise reduction. The fixing rod 6 includes a positioning rod 14. The top of the inner cavity of the positioning rod 14 is provided with a threaded hole 15. The top of the fixing rod 6 is threadedly connected to the external threaded rod 16 through the threaded hole 15. The bottom of the external threaded rod 16 is fixedly connected to the bottom of the top plate 9. By rotating the external threaded rod 16, it can be moved up and down by cooperating with the threaded hole 15, thereby adjusting the distance between the top plate 9 and the outer sleeve 4 to meet different installation requirements.

[0021] Among them, preferably, mounting plates 7 are provided at the bottom of the left and right sides of the fixing rod 6, and bolts 8 are provided between the top of the mounting plate 7 and the top of the outer sleeve 4. This arrangement can increase the stability of the connection between the fixing rod 6 and the outer sleeve 4, while facilitating disassembly and assembly.

[0022] Preferably, the inner angle between the external threaded rod 16 and the top plate 9 is set to ninety degrees. This setting can increase the stability of the connection between the two. The length of the external threaded rod 16 is greater than the length of the positioning rod 14.

[0023] Preferably, the top plate 9 is configured as a circular top plate. This configuration allows the top plate 9 to rotate along with the external threaded rod 16, but will not affect the normal use of the top plate 9. Mounting holes 17 are vertically provided on all four sides of the top of the top plate 9, and the top plate 9 can be installed and fixed on the wall through the provided mounting holes 17.

[0024] Example 2:

[0025] Reference Figure 1-3 , this embodiment is different from the first embodiment in that: a groove is provided on the top of the top plate 9, and a rubber pad 18 is provided in the groove. The bottom of the rubber pad 18 is fixedly bonded to the bottom of the inner cavity of the groove. The provided rubber pad 18 can increase the stability of the connection when the top plate 9 is connected to the wall; the thickness of the rubber pad 18 is greater than the depth of the groove, and the rubber pad 18 is configured as a flexible rubber pad. This configuration allows the top plate 9 to contact the wall when connected to the wall, thereby increasing the stability after installation; the flame retardant layer 10 is configured as a polyimide fiber layer, the polyimide fiber layer has good flame retardant effect, and can effectively improve the flame retardant effect of the entire air duct; the thermal insulation layer 12 is configured as a polyethylene foam material thermal insulation layer, and the polyethylene foam material thermal insulation layer has good thermal insulation effect and a long service life.

[0026] The electrical appliances mentioned in this article are all connected to an external power source through wires.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flame-retardant and heat-insulating flexible composite air duct, comprising an air duct body (1), characterized in that: The inner wall of the inner cavity of the air duct body (1) is provided with an inner protective layer (2), the outer wall of the air duct body (1) is provided with connecting columns (3) in sequence from the inside to the outside, the outer wall of the air duct body (1) is provided with an outer sleeve (4) through the connecting columns (3), a sound insulation cotton filling layer (5) is provided between the outer wall of the air duct body (1) and the inner wall of the outer sleeve (4), the top left and right sides of the outer sleeve (4) are vertically provided with fixing rods (6) in sequence from the inside to the outside, and the top of the fixing rods (6) is provided with a top plate (9), the inner protective layer (2 ) includes a flame retardant layer (10), the inner wall of the flame retardant layer (10) is provided with a heat insulation layer (11), the inner wall of the heat insulation layer (11) is provided with a heat preservation layer (12), the inner wall of the heat preservation layer (12) is provided with a polyurethane foam plastic layer (13), the fixing rod (6) includes a positioning rod (14), the top of the inner cavity of the positioning rod (14) is provided with a threaded hole (15), the top of the fixing rod (6) is threadedly connected to the external threaded rod (16) through the threaded hole (15), and the bottom of the external threaded rod (16) is fixedly connected to the bottom of the top plate (9).

2. The flame-retardant, heat-insulating, flexible composite air duct according to claim 1, characterized in that: Mounting plates (7) are provided at the bottoms of both the left and right sides of the fixing rod (6), and bolts (8) are provided between the tops of the mounting plates (7) and the tops of the outer sleeves (4).

3. The flame-retardant, heat-insulating, flexible composite air duct according to claim 1, characterized in that: The inner angles between the external threaded rod (16) and the top plate (9) are both set to ninety degrees, and the length of the external threaded rod (16) is greater than the length of the positioning rod (14).

4. The flame-retardant, heat-insulating, flexible composite air duct according to claim 1, characterized in that: The top plates (9) are all configured as circular top plates, and mounting holes (17) are vertically penetrated on all four sides of the top of the top plates (9).

5. The flame-retardant, heat-insulating, flexible composite air duct according to claim 1, characterized in that: The top of each top plate (9) is provided with a groove, a rubber pad (18) is provided in each groove, and the bottom of each rubber pad (18) is fixedly bonded to the bottom of the inner cavity of the groove.

6. The flame-retardant, heat-insulating, flexible composite air duct according to claim 5, characterized in that: The thickness of the rubber pad (18) is greater than the depth of the groove, and the rubber pad (18) is configured as a flexible rubber pad.

7. The flame-retardant, heat-insulating, flexible composite air duct according to claim 1, characterized in that: The flame retardant layer (10) is configured as a polyimide fiber layer, and the thermal insulation layer (12) is configured as a polyethylene foam material thermal insulation layer.

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