A type of PP heat-insulating, high-efficiency flame-retardant air duct

Abstract

This utility model relates to the field of ventilation duct technology and discloses a PP heat-insulating, high-efficiency flame-retardant air duct, including a main duct, which includes a composite ventilation duct. A reinforcing layer is provided on the outside of the composite ventilation duct. The reinforcing layer includes multiple aluminum alloy reinforcing ribs arranged at equal angles on the outside of the composite ventilation duct. A set of arc-shaped aluminum alloy reinforcing blocks is fixedly connected between every two adjacent aluminum alloy reinforcing ribs. This utility model, by adding reinforcing materials, specifically glass fiber and carbon fiber reinforcing materials to the PP base material, can significantly improve the mechanical strength and rigidity of the air duct. Simultaneously, the overall flame-retardant air duct has a reinforcing layer on its outside, which includes multiple aluminum alloy reinforcing ribs arranged at equal angles. Multiple arc-shaped aluminum alloy reinforcing blocks are fixedly connected at equal intervals between every two adjacent aluminum alloy reinforcing ribs, enabling the flame-retardant air duct to withstand greater external forces and pressures, effectively enhancing its impact resistance and deformation resistance.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, specifically a PP heat-insulating, heat-preserving, high-efficiency flame-retardant air duct. Background Technology

[0002] Flame-retardant air ducts are ventilation ducts with flame-retardant properties, including inorganic fiberglass flame-retardant air ducts. They are made of inorganic cementitious materials as the matrix and glass fiber and its products as the reinforcing materials, and are manufactured through a certain process. They have the characteristics of being non-combustible, corrosion-resistant, high-strength, and having a long service life. They are often used in ventilation and air conditioning systems of industrial and civil buildings with high fire protection requirements.

[0003] The existing flame-retardant air ducts still have the following problems when used: their mechanical strength is relatively limited. Although PP air ducts have a certain strength and rigidity, they may deform or crack under some special conditions, such as being subjected to large external impacts or in high-pressure environments. Compared with metal air ducts, their mechanical strength still has room for improvement. Utility Model Content

[0004] (a) Technical problems to be solved.

[0005] To address the shortcomings of existing technologies, this utility model provides a PP heat-insulating, high-efficiency flame-retardant air duct, which solves the problems mentioned in the background technology.

[0006] (ii) Technical solution.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a PP heat-insulating, heat-preserving, high-efficiency flame-retardant air duct, comprising a main pipe, the main pipe comprising a composite ventilation pipe, a reinforcing layer provided on the outer side of the composite ventilation pipe, the reinforcing layer comprising a plurality of aluminum alloy reinforcing ribs arranged at equal angles on the outer side of the composite ventilation pipe, a set of arc-shaped aluminum alloy reinforcing blocks fixedly connected between every two adjacent aluminum alloy reinforcing ribs, a set of multiple arc-shaped aluminum alloy reinforcing blocks arranged horizontally at equal intervals, the inner layer of the composite ventilation pipe being a PP base layer, the PP base layer being reinforced with glass fiber and carbon fiber materials.

[0008] As a further improvement of this utility model: the outermost layer of the composite ventilation pipe is a flame-retardant layer, the outer side of the flame-retardant layer is provided with a ceramic coating, the outer side of the flame-retardant layer is provided with an assembly groove for matching aluminum alloy reinforcing ribs, and a through groove is provided between the center positions of the two side walls of the aluminum alloy reinforcing ribs.

[0009] As a further embodiment of this utility model: a spiral air guide strip is provided at the center of the composite ventilation pipe, the spiral air guide strip is fixedly connected to the inner wall of the PP base layer, and the reinforcing layer, the composite ventilation pipe and the spiral air guide strip are arranged coaxially.

[0010] As a further improvement of this utility model: a heat insulation layer is provided on the outside of the PP base layer, the heat insulation layer is made of polystyrene foam, and a set of buffer strips is fixedly connected to the outside of the heat insulation layer. The set of buffer strips consists of multiple strips arranged at equal angles, and the buffer strips are made of silicone rubber.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, by adding reinforcing materials, namely glass fiber and carbon fiber reinforcing materials to the PP base material, the mechanical strength and rigidity of the duct can be significantly improved. At the same time, the outer side of the flame-retardant duct is provided with a reinforcing layer, which includes multiple aluminum alloy reinforcing ribs arranged at equal angles. Multiple arc-shaped aluminum alloy reinforcing blocks are fixedly connected at equal intervals between every two adjacent aluminum alloy reinforcing ribs, so that the flame-retardant duct can withstand greater external forces and pressures, and can effectively enhance its impact resistance and deformation resistance.

[0012] 2. In this utility model, the surface of the duct is treated with a high-temperature resistant coating, that is, a ceramic coating is provided on the outside of the flame-retardant layer. The ceramic coating can reflect heat, reduce the surface temperature of the duct, and protect the PP material from the direct influence of the high-temperature environment, thereby improving the high-temperature resistance and service life of the duct. In addition, the outside of the flame-retardant layer is provided with an assembly groove for matching aluminum alloy reinforcing ribs, and a through groove is provided between the center positions of the two side walls of the aluminum alloy reinforcing ribs, which plays a role in reducing the weight of the overall flame-retardant duct. Attached Figure Description

[0013] Figure 1 This is a perspective view of the entire utility model; Figure 2 This is a three-dimensional cross-sectional view of the main pipeline of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a three-dimensional view of the reinforcing layer of this utility model.

[0014] In the diagram: 1. Main duct; 2. Reinforcing layer; 11. Composite ventilation duct; 12. Spiral air guide strip; 111. PP base layer; 112. Thermal insulation layer; 113. Buffer strip; 114. Flame retardant layer; 115. Assembly groove; 21. Aluminum alloy reinforcing rib; 22. Through groove; 23. Arc-shaped aluminum alloy reinforcing block. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0016] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please see Figures 1-4 In this embodiment of the present invention, a PP heat-insulating, heat-preserving, high-efficiency flame-retardant air duct includes a main pipe 1, which includes a composite ventilation pipe 11. A reinforcing layer 2 is provided on the outer side of the composite ventilation pipe 11. The reinforcing layer 2 includes multiple aluminum alloy reinforcing ribs 21 arranged at equal angles on the outer side of the composite ventilation pipe 11. A set of arc-shaped aluminum alloy reinforcing blocks 23 is fixedly connected between every two adjacent aluminum alloy reinforcing ribs 21. Multiple arc-shaped aluminum alloy reinforcing blocks 23 are arranged horizontally at equal intervals. The inner layer of the composite ventilation pipe 11 is a PP base layer 111. The 111 layer contains glass fiber and carbon fiber reinforcement materials. By adding these reinforcement materials to the PP base layer 111 material, the mechanical strength and rigidity of the duct can be significantly improved. At the same time, the outer side of the flame-retardant duct is provided with a reinforcement layer 2, which includes multiple aluminum alloy reinforcing ribs 21 arranged at equal angles. Multiple arc-shaped aluminum alloy reinforcing blocks 23 are fixedly connected at equal intervals between every two adjacent aluminum alloy reinforcing ribs 21, enabling the flame-retardant duct to withstand greater external forces and pressures, and effectively enhancing its impact resistance and deformation resistance.

[0019] The outermost layer of the composite ventilation duct 11 is a flame-retardant layer 114. A ceramic coating is provided on the outside of the flame-retardant layer 114. An assembly groove 115 matching the aluminum alloy reinforcing rib 21 is provided on the outside of the flame-retardant layer 114. A through groove 22 is provided between the center positions of the two side walls of the aluminum alloy reinforcing rib 21. The entire duct surface is treated with a high-temperature resistant coating, that is, a ceramic coating is provided on the outside of the flame-retardant layer 114. The ceramic coating can reflect heat, reduce the surface temperature of the duct, and protect the PP material from the direct influence of the high-temperature environment, thereby improving the high-temperature resistance and service life of the duct. In addition, the assembly groove 115 matching the aluminum alloy reinforcing rib 21 is provided on the outside of the flame-retardant layer 114, and the through groove 22 is provided between the center positions of the two side walls of the aluminum alloy reinforcing rib 21, which plays a role in reducing the weight of the overall flame-retardant duct.

[0020] A spiral air guide strip 12 is provided at the center of the composite ventilation duct 11. The spiral air guide strip 12 is fixedly connected to the inner wall of the PP base layer 111. The reinforcing layer 2, the composite ventilation duct 11 and the spiral air guide strip 12 are arranged coaxially. The spiral air guide strip 12 plays the role of ventilation and airflow guidance in the composite ventilation duct 11.

[0021] A heat insulation layer 112 is provided on the outside of the PP base layer 111. The heat insulation layer 112 is made of polystyrene foam and serves as heat insulation for the pipeline. A set of buffer strips 113 is fixedly connected to the outside of the heat insulation layer 112. There are multiple buffer strips 113 arranged at equal angles. The buffer strips 113 are made of silicone rubber and serve as buffer protection for the pipeline.

[0022] The working principle of this utility model is as follows: the spiral air guide strip 12 serves to guide the airflow within the composite ventilation duct 11; the heat insulation layer 112 is made of polystyrene foam, which provides heat insulation for the duct; the buffer strip 113 provides buffer protection for the duct; and the entire duct surface is treated with a high-temperature resistant coating, specifically a ceramic coating on the outside of the flame-retardant layer 114. This ceramic coating reflects heat, reduces the surface temperature of the duct, and protects the PP... The material is not directly affected by high-temperature environments, improving the high-temperature resistance and service life of the duct. In addition, the flame-retardant layer 114 has an assembly groove 115 on the outside to match the aluminum alloy reinforcing ribs 21. At the same time, a through groove 22 is opened between the center positions of the two side walls of the aluminum alloy reinforcing ribs 21, which reduces the weight of the overall flame-retardant duct. Since glass fiber and carbon fiber reinforcing materials are added to the PP base material 111, the mechanical strength and rigidity of the duct can be significantly improved. At the same time, the outer side of the overall flame-retardant duct is provided with a reinforcing layer 2, which includes multiple aluminum alloy reinforcing ribs 21 arranged at equal angles. Multiple arc-shaped aluminum alloy reinforcing blocks 23 are fixedly connected at equal intervals between every two adjacent aluminum alloy reinforcing ribs 21, enabling the flame-retardant duct to withstand greater external forces and pressures, and effectively enhancing its impact resistance and deformation resistance.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A PP heat-insulating, heat-preserving, high-efficiency flame-retardant air duct, comprising a main duct (1), wherein the main duct (1) comprises a composite ventilation duct (11). characterized in that The composite ventilation pipe (11) is provided with an enhancement layer (2) on the outside. The enhancement layer (2) includes a plurality of aluminum alloy reinforcing ribs (21) arranged at equal angles on the outside of the composite ventilation pipe (11). A set of arc-shaped aluminum alloy reinforcing blocks (23) is fixedly connected between each pair of adjacent aluminum alloy reinforcing ribs (21). There are multiple arc-shaped aluminum alloy reinforcing blocks (23) arranged at equal horizontal intervals. The inner layer of the composite ventilation pipe (11) is a PP base layer (111), the outermost layer of the composite ventilation pipe (11) is a flame retardant layer (114), and a ceramic coating is provided on the outside of the flame retardant layer (114). The flame-retardant layer (114) has an assembly groove (115) for matching aluminum alloy reinforcing ribs (21) on its outer side, and a through groove (22) is provided between the center positions of the two side walls of the aluminum alloy reinforcing ribs (21).

2. The PP heat-insulated and high-efficient flame-retardant air pipe according to claim 1, characterized in that: A spiral air guide strip (12) is provided at the center of the composite ventilation pipe (11), and the spiral air guide strip (12) is fixedly connected to the inner wall of the PP base layer (111).

3. The PP heat-insulated and high-efficient flame-retardant air pipe according to claim 1, characterized in that: A heat insulation layer (112) is provided on the outside of the PP base layer (111), and the heat insulation layer (112) is made of polystyrene foam.

4. The PP thermal insulation and high-efficiency flame-retardant air duct according to claim 3, characterized in that: A set of buffer strips (113) are fixedly connected to the outside of the heat insulation layer (112).

5. The PP thermal insulation and high-efficiency flame-retardant air duct according to claim 4, characterized in that: A set of buffer strips (113) consists of multiple strips arranged at equal angles, and the buffer strips (113) are made of silicone rubber.

6. The PP thermal insulation and high-efficiency flame-retardant air duct according to claim 1, characterized in that: The reinforcing layer (2), the composite ventilation pipe (11), and the spiral air guide strip (12) are arranged coaxially.

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