Composite glass fiber air pipe for ventilation and air conditioning engineering

Abstract

This utility model relates to the field of duct technology and discloses a composite fiberglass duct for ventilation and air conditioning engineering. It includes a duct assembly with a load-bearing support component fitted onto its surface. The load-bearing support component includes a fixed frame with a groove on its surface and an anti-slip rubber pad on its inner side. The fixed frame is U-shaped and locked to the outer surface of the duct assembly. The groove is located on the two U-shaped sides of the fixed frame. This utility model utilizes the sliding engagement between the U-shaped fixed frame and the groove, allowing the locking bolts to adjust the moving plate longitudinally along the fixed frame, adapting to the installation requirements of ducts with different diameters. The connecting bolt column and the support plate are flexibly adjusted vertically using two sets of locking nuts, eliminating the need for custom brackets and adapting to different installation environments, significantly improving construction efficiency and reducing costs.

Description

Technical Field

[0001] This utility model relates to the field of air ducts, and in particular to a composite fiberglass air duct for ventilation and air conditioning engineering. Background Technology

[0002] In ventilation and air conditioning engineering, composite fiberglass ducts are widely used due to their lightweight, good thermal insulation, corrosion resistance, and excellent sound insulation. These ducts are typically composed of a fiberglass layer and a flame-retardant resin layer, meeting both the functional requirements of the ventilation system and possessing a certain structural strength. However, in practical engineering applications, the existing support structures of composite fiberglass ducts still have the following technical defects: Currently, traditional composite fiberglass ducts mostly use fixed supports or distributed support structures for load-bearing support, which has the following main shortcomings: Poor adjustability of support structure: Existing support components are mostly of fixed specifications, which are difficult to adapt to ducts of different diameters or installation environments. When it is necessary to adjust the installation height or spacing, it is often necessary to customize the brackets, resulting in low construction efficiency and increased costs.

[0003] Insufficient load-bearing stability: Distributed support points can easily lead to uneven stress on the duct. During long-term operation, problems such as deformation and cracking may occur due to vibration or concentrated load. Especially for large-diameter ducts or long-distance laying scenarios, the reliability of the support structure urgently needs to be improved.

[0004] Based on this, we propose a composite fiberglass duct for ventilation and air conditioning engineering. Utility Model Content

[0005] To address the technical problems of poor adjustability of the support structure and insufficient load-bearing stability, this utility model provides a composite fiberglass duct for ventilation and air conditioning engineering.

[0006] This utility model is achieved by the following technical solution: a composite fiberglass duct for ventilation and air conditioning engineering, including a duct body, a load-bearing support component sleeved on the surface of the duct body, the load-bearing support component including a fixed frame, a groove on the surface of the fixed frame, an anti-slip rubber pad layer on the inner side of the fixed frame, the fixed frame is a U-shaped frame, the fixed frame is locked to the outer surface of the duct body, and the groove is opened on the two U-shaped sides of the fixed frame.

[0007] The inner side of the slide is slidably engaged with a locking bolt, and the inner side of the locking bolt is threadedly connected to a connecting plate. The outer side of the connecting plate is integrally forged to form a movable plate. The connecting plate is integrally fixedly forged below both ends of the movable plate. The connecting plate and the movable plate are integrally forged, and the connecting plate is provided with threaded holes that match the locking bolt. The locking bolt passes through the slide and passes through the locking connecting plate.

[0008] The top surface of the movable plate is connected to a connecting bolt post, and the top of the connecting bolt post is threadedly connected to a support plate. A locking nut is threadedly fitted at the connection between the support plate and the connecting bolt post. Two sets of locking nuts are provided, arranged opposite each other, and locked onto both sides of the support plate. An elastic washer is placed between the two sets of locking nuts to enhance the anti-loosening effect during locking.

[0009] The load-bearing component includes load-bearing studs, the threads of which pass through each set of support plates. Load-bearing nuts are threadedly locked at the connection between the load-bearing studs and the support plates, and the threads of the load-bearing nuts are locked on both sides of the support plates.

[0010] As a further optimization of this utility model, the duct is made of composite fiberglass material, which includes a composite structure of glass fiber layer and flame retardant resin layer, and is lightweight and high-strength.

[0011] As a further optimization of this utility model, an anti-slip rubber pad is provided on the inner side of the fixed frame. The anti-slip rubber pad on the inner side of the fixed frame avoids direct friction between the metal and the fiberglass material, thus protecting the surface of the duct while ensuring load-bearing capacity.

[0012] As a further optimization of this utility model, multiple sets of load-bearing support components are provided. These load-bearing support components are supported on the outer side of the entire duct, and each set of load-bearing support components is connected to other load-bearing components for support. The load-bearing support components are evenly distributed along the length of the entire duct, and the distance between two adjacent sets of load-bearing support components is - meter.

[0013] As a further optimization of this utility model, the fixed frame of the load-bearing support component is U-shaped and fits onto the outer surface of the entire duct. Locking bolts pass through the sliding grooves on both sides of the fixed frame and are threadedly connected to the connecting plate. The sliding grooves provide a sliding track for the locking bolts, allowing the movable plate to adjust its height along the U-shaped longitudinal direction of the fixed frame. As the movable plate adjusts its height, it presses down onto the surface of the entire duct. The fixed frame and the movable plate securely lock the entire duct together, thus accommodating ducts of different diameters.

[0014] As a further optimization of this utility model, the connecting bolt column at the top of the movable plate passes through the support plate and is locked on both sides of the support plate by two sets of locking nuts, which can adjust the vertical height of the support plate. When it is necessary to adjust the installation height of the air duct, loosen the locking nuts and move the support plate up and down, then tighten the nuts after positioning to achieve quick adjustment.

[0015] As a further optimization of this utility model, the two sets of locking nuts at the connection between the connecting bolt column and the support plate adopt a relative locking method, and with the elastic washer between the two, the friction force prevents the nuts from loosening under vibration conditions, thus ensuring the long-term reliability of the support structure.

[0016] As a further optimization of this utility model, multiple sets of load-bearing support components are evenly distributed along the overall length of the duct, with a spacing of - meters. Each set of support components passes through the support plate via load-bearing studs and is locked in place by load-bearing nuts, forming a longitudinally connected overall support structure. This design distributes the weight of the duct to multiple support points, avoiding concentrated load at a single point and improving system stability.

[0017] As a further optimization of this utility model, the load-bearing stud penetrates multiple sets of support plates, and the load-bearing nuts at both ends not only fix the position of the support plates, but also prevent the load-bearing support components from shifting in the horizontal direction by axial limiting, thereby enhancing the vibration resistance of the overall structure.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model utilizes the sliding fit between a U-shaped fixed frame and a sliding groove. The locking bolts can drive the moving plate to adjust longitudinally along the fixed frame, adapting to the installation requirements of ducts with different diameters. The connecting bolt column and the support plate achieve flexible vertical height adjustment through two sets of locking nuts, eliminating the need for customized brackets to adapt to different installation environments, significantly improving construction efficiency and reducing costs.

[0019] 2. This utility model uses multiple sets of load-bearing support components connected longitudinally by load-bearing studs to distribute the overall weight of the duct to multiple support points, avoiding concentrated load on a single point. The spacing between adjacent support components is evenly distributed within a meter, and with the axial limiting of the load-bearing nuts, it effectively solves the problem of uneven stress when laying large-diameter ducts or over long distances, preventing duct deformation and cracking.

[0020] 3. This utility model uses a combination design of locking nut and elastic washer to prevent the nut from loosening under vibration conditions through friction; the load-bearing nuts at both ends of the load-bearing stud form a two-way locking with the support plate, which not only fixes the support position but also restricts horizontal displacement, ensuring the stability of the support structure during long-term operation of the system.

[0021] 4. This utility model adopts a composite structure of glass fiber layer and flame retardant resin layer for the entire air duct, which is lightweight and high-strength; the anti-slip rubber pad layer on the inner side of the fixed frame avoids direct friction between metal and glass fiber material, protecting the surface of the air duct while ensuring load-bearing capacity. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Schematic diagram of the middle section of the structure; Figure 3 This utility model Figure 1 Enlarged schematic diagram of the structure of region A in the middle; Figure 4This is a schematic diagram of the connection structure of the load-bearing support component of this utility model; Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure of region B in the middle.

[0023] Explanation of key symbols: 1. Duct assembly; 2. Load-bearing support assembly; 21. Fixed frame; 22. Slide groove; 23. Locking bolt; 24. Moving plate; 25. Connecting plate; 26. Connecting bolt post; 27. Support plate; 28. Locking nut; 3. Load-bearing assembly; 31. Load-bearing stud; 32. Load-bearing nut. Detailed Implementation

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Example 1: Please combine Figures 1-5 This embodiment proposes a composite fiberglass duct for ventilation and air conditioning engineering, including a duct assembly 1, which is composed of a fiberglass layer and a flame-retardant resin layer, making it lightweight and high-strength. The fixing frame 21 is made of metal and has an anti-slip rubber pad layer on its inner wall, which ensures a tight fit with the outer surface of the duct and avoids wear on the surface of the fiberglass duct by the metal frame.

[0026] The surface of the duct 1 is fitted with load-bearing support components 2. Multiple sets of load-bearing support components 2 are provided, and they support the outside of the duct 1. Each set of load-bearing support components 2 is connected by a load-bearing component 3 for support. The load-bearing support components 2 are evenly distributed along the length of the duct 1, and the distance between two adjacent sets of load-bearing support components 2 is 1-2 meters.

[0027] The load-bearing support component 2 includes a fixed frame 21. An anti-slip rubber pad is provided on the inner side of the fixed frame 21. This anti-slip rubber pad prevents direct friction between the metal and the fiberglass material, protecting the duct surface while ensuring load-bearing capacity. The surface of the fixed frame 21 has grooves 22. The fixed frame 21 is U-shaped and is locked to the outer surface of the overall duct 1. The grooves 22 are located on the two U-shaped sides of the fixed frame 21.

[0028] The inner side of the slide groove 22 is slidably engaged with a locking bolt 23, and the inner side of the locking bolt 23 is threadedly connected to a connecting plate 25. The outer side of the connecting plate 25 is integrally forged to form a movable plate 24. The connecting plate 25 is integrally forged and fixedly forged below both ends of the movable plate 24. The connecting plate 25 and the movable plate 24 are integrally forged, and the connecting plate 25 is provided with threaded holes that match the locking bolt 23. The locking bolt 23 passes through the slide groove 22 and bolts through the locking connecting plate 25.

[0029] In the specific technical solution, the fixed frame 21 of the load-bearing support component 2 is U-shaped and fits onto the outer surface of the duct assembly 1. Locking bolts 23 pass through the sliding grooves 22 on both sides of the fixed frame 21 and are threadedly connected to the connecting plate 25. The sliding grooves 22 provide a sliding track for the locking bolts 23, allowing the movable plate 24 to adjust its height along the U-shaped longitudinal direction of the fixed frame 21. As the movable plate 24 adjusts its height, it presses down onto the surface of the duct assembly 1. The fixed frame 21 and the movable plate 24 securely lock the duct assembly 1 together, thus accommodating ducts of different diameters.

[0030] A connecting bolt post 26 is connected to the top surface of the movable plate 24. A support plate 27 is threadedly connected to the top of the connecting bolt post 26. A locking nut 28 is threadedly fitted at the connection between the support plate 27 and the connecting bolt post 26. Two sets of locking nuts 28 are provided, arranged opposite each other, and locked onto both sides of the support plate 27. An elastic washer is provided between the two sets of locking nuts 28 to enhance the anti-loosening effect during locking.

[0031] More specifically, the connecting bolt post 26 at the top of the movable plate 24 passes through the support plate 27 and is locked on both sides of the support plate 27 by two sets of locking nuts 28, allowing adjustment of the vertical height of the support plate 27. When it is necessary to adjust the installation height of the duct, loosen the locking nuts 28 and move the support plate 27 up and down, then tighten the nuts after positioning to achieve quick adjustment. The two sets of locking nuts 28 at the connection between the connecting bolt post 26 and the support plate 27 adopt a relative locking method, and with the elastic washer between them, the friction prevents the nuts from loosening under vibration conditions, ensuring the long-term reliability of the support structure.

[0032] The load-bearing component 3 includes a load-bearing stud 31, which is threaded through each set of support plates 27. A load-bearing nut 32 is threadedly locked at the connection between the load-bearing stud 31 and the support plate 27. The load-bearing nut 32 is threadedly locked on both sides of the support plate 27.

[0033] The specific technical solution involves multiple sets of load-bearing support components 2 evenly distributed along the length of the duct 1, with a spacing of 1-2 meters. Each set of support components passes through a support plate 27 via load-bearing studs 31 of the load-bearing components 3, and is locked in place by load-bearing nuts 32, forming a longitudinally connected overall support structure. This design distributes the weight of the duct to multiple support points, avoiding concentrated load at a single point and improving system stability. The load-bearing studs 31 pass through multiple sets of support plates 27, and the load-bearing nuts 32 at both ends not only fix the position of the support plates 27, but also prevent the load-bearing support components 2 from shifting horizontally through axial limiting, thereby enhancing the overall structure's vibration resistance.

[0034] Working principle: I. Installation and Adjustment Principles of Support Structures Connection and positioning of the fixed frame: The duct as a whole 1 is made of a composite of fiberglass layer and flame-retardant resin layer, which is lightweight and high-strength. The fixing frame 21 is made of metal and has an anti-slip rubber pad layer on the inner wall, which ensures a tight fit with the outer surface of the duct and avoids wear on the surface of the fiberglass duct by the metal frame.

[0035] The fixed frame 21 of the load-bearing support component 2 is U-shaped and fits onto the outer surface of the duct assembly 1. Locking bolts 23 pass through the sliding grooves 22 on both sides of the fixed frame 21 and are threadedly connected to the connecting plate 25. The sliding grooves 22 provide a sliding track for the locking bolts 23, allowing the movable plate 24 to adjust its height along the U-shape of the fixed frame 21. As the movable plate 24 adjusts its height, it presses down onto the surface of the duct assembly 1. The fixed frame 21 and the movable plate 24 securely lock the duct assembly 1 together, thus accommodating ducts of different diameters.

[0036] The connecting bolt post 26 at the top of the movable plate 24 passes through the support plate 27 and is locked on both sides of the support plate 27 by two sets of locking nuts 28, allowing adjustment of the vertical height of the support plate 27. When it is necessary to adjust the installation height of the duct, loosen the locking nuts 28 and move the support plate 27 up and down, then tighten the nuts after positioning to achieve quick adjustment. The two sets of locking nuts 28 at the connection between the connecting bolt post 26 and the support plate 27 adopt a relative locking method, and with the elastic washer between them, the friction prevents the nuts from loosening under vibration conditions, ensuring the long-term reliability of the support structure.

[0037] II. Principles of Load Bearing and Stability Multi-component collaborative load-bearing: Multiple sets of load-bearing support components 2 are evenly distributed along the length of the duct 1, with a spacing of 1-2 meters. Each set of support components passes through the support plate 27 via load-bearing studs 31 of the load-bearing components 3, and is locked by load-bearing nuts 32, forming a longitudinally connected overall support structure. This design distributes the weight of the duct to multiple support points, avoiding concentrated load at a single point and improving system stability. The load-bearing studs 31 pass through multiple sets of support plates 27, and the load-bearing nuts 32 at both ends not only fix the position of the support plates 27, but also prevent the load-bearing support components 2 from shifting in the horizontal direction through axial limiting, thereby enhancing the vibration resistance of the overall structure.

[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A composite glass fiber duct for ventilation and air conditioning engineering, comprising a duct body (1), characterized in that, The surface of the duct (1) is fitted with a load-bearing support assembly (2). The load-bearing support assembly (2) includes a fixed frame (21). The inner side of the fixed frame (21) is provided with an anti-slip rubber pad. The surface of the fixed frame (21) is provided with a sliding groove (22). The inner side of the sliding groove (22) is slidably engaged with a locking bolt (23). The inner side of the locking bolt (23) is threadedly connected to a connecting plate (25). The outer side of the connecting plate (25) is integrally forged to form a movable plate (24). The top surface of the movable plate (24) is connected with a connecting bolt column (26). The top of the connecting bolt column (26) is threadedly connected to a support plate (27). The connection between the support plate (27) and the connecting bolt column (26) is threadedly fitted with a locking nut (28). There are two sets of locking nuts (28). The two sets of locking nuts (28) are opposite to each other and are locked on both sides of the support plate (27).

2. A composite glass fiber duct for ventilation and air conditioning works as claimed in claim 1, wherein, The fixed frame (21) is a U-shaped frame, and the fixed frame (21) is locked to the outer surface of the air duct (1). The slide groove (22) is opened on the two U-shaped sides of the fixed frame (21).

3. The composite fiberglass duct for ventilation and air conditioning engineering as described in claim 1, characterized in that, The connecting plate (25) is integrally forged and fixed below both ends of the moving plate (24). The connecting plate (25) and the moving plate (24) are integrally forged. The connecting plate (25) has a threaded hole that matches the locking bolt (23). The locking bolt (23) passes through the slide groove (22) and bolts through to lock the connecting plate (25).

4. The composite fiberglass duct for ventilation and air conditioning engineering as described in claim 1, characterized in that, The load-bearing support component (2) is provided in multiple sets. The load-bearing support component (2) is supported on the outside of the air duct whole (1). Each set of load-bearing support components (2) is connected by a load-bearing component (3) for support.

5. A composite fiberglass duct for ventilation and air conditioning engineering as described in claim 4, characterized in that, The load-bearing component (3) includes a load-bearing stud (31), the load-bearing stud (31) is threaded through each set of support plates (27), and a load-bearing nut (32) is threadedly locked at the connection between the load-bearing stud (31) and the support plate (27), and the load-bearing nut (32) is threadedly locked on both sides of the support plate (27).

6. The composite fiberglass duct for ventilation and air conditioning engineering as described in claim 1, characterized in that, The load-bearing support components (2) are evenly distributed along the length of the entire air duct (1), and the distance between two adjacent load-bearing support components (2) is 1-2 meters.

7. A composite fiberglass duct for ventilation and air conditioning engineering as described in claim 1, characterized in that, The duct as a whole (1) is made of composite fiberglass material, which includes a composite structure of a glass fiber layer and a flame-retardant resin layer.

8. A composite fiberglass duct for ventilation and air conditioning engineering as described in claim 1, characterized in that, An elastic washer is provided between the two sets of locking nuts (28) to enhance the anti-loosening effect during locking.

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