Combined alloy air duct

The modular alloy ductwork achieves a quick and stable connection through its positioning plate, spring limit block, and rotating wheel structure. The combination of buffer pads and sliding cylinders reduces noise, solving the problems of weak connections, inconvenient installation, and noise associated with traditional ductwork, thus improving the operating efficiency and reliability of the ventilation system.

CN224339692UActive Publication Date: 2026-06-09DEZHOU FULDA AIR CONDITIONING EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DEZHOU FULDA AIR CONDITIONING EQUIP CO LTD
Filing Date
2025-07-12
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional modular alloy duct connection methods suffer from poor sealing, unstable connections, and inconvenient installation and disassembly, affecting the normal operation and efficiency of the ventilation system.

Method used

The design employs a modular alloy duct system, utilizing a combination of positioning plates, spring limit blocks, rotating wheels, and fixing rods to achieve rapid and precise positioning and stable connection. Furthermore, the combination of buffer pads, sliding cylinders, and springs in the noise reduction design absorbs vibration energy and reduces noise transmission.

Benefits of technology

It enables quick and reliable connection of air ducts, prevents loosening, reduces noise pollution, extends service life, and improves the operational quality of the ventilation system.

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    Figure CN224339692U_ABST
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Abstract

The utility model relates to the technical field of ventilation pipeline discloses a combined alloy air pipe, including pipeline one, pipeline one outer wall one side is provided with the locating groove, the pipeline one upper surface is provided with the combination subassembly, the pipeline one and pipeline two outer wall are provided with the noise reduction subassembly, the combination subassembly includes connecting piece no.
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Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, and in particular to a combined alloy duct. Background Technology

[0002] In the field of ventilation and air conditioning engineering, composite alloy ducts are widely used in industrial plants, commercial buildings, and public facilities due to their excellent corrosion resistance and high strength, undertaking the important functions of air transport and environmental regulation. With the diversification of building space layouts and the continuous improvement of ventilation system requirements, higher standards have been set for the structural design and performance of alloy ducts.

[0003] Currently, the most common mechanical connection structures for traditional modular alloy ducts are flange connections or plug-in connections. Flange connections use bolts to fasten the flanges of adjacent ducts, and then use gaskets to achieve a seal. Plug-in connections involve inserting one end of the duct into the other and securing it with clamps or sealant. These connection methods mainly rely on manual tightening of bolts and application of sealant, using physical contact and external force to ensure the stability and sealing of the duct connection.

[0004] However, the aforementioned traditional connection methods have significant drawbacks in practical applications. During installation, flange connections require tightening numerous bolts one by one, which is not only time-consuming and labor-intensive but also prone to uneven tightening, resulting in poor sealing and weak connections at the duct joints. While plug-in connections are relatively easy to install, the clamps tend to loosen after prolonged use, and the sealant loses its sealing effect due to aging, leading to air leaks or even detachment of the ducts during operation, affecting the normal operation of the ventilation system and installation efficiency. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a combined alloy duct, which aims to improve the problems of weak connections and inconvenient installation and disassembly of traditional ducts.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a combined alloy duct, comprising a first duct, a second duct provided on one side of the outer wall of the first duct, a combined assembly provided on the upper surface of the first duct, and noise reduction assemblies provided on the outer walls of the first duct and the second duct.

[0007] The assembly includes a second connector, the outer wall of which is fixedly connected to the upper surface of a first pipe. A first connector is fixedly connected to the upper surface of the second pipe. A positioning plate is fixedly connected to one side of the outer wall of the first pipe. A positioning groove is formed on one side of the outer wall of the second pipe. A first spring is fixedly connected to the inner wall of the second connector. A limit block is fixedly connected to one end of the first spring. A fixing rod is threadedly connected to the inner wall of the first connector. A rotating wheel is fixedly connected to one end of the fixing rod. Reinforcing blocks 2 are provided on both sides of the outer wall of the first pipe. Reinforcing blocks 1 are provided on both sides of the second pipe.

[0008] Furthermore, the noise reduction component includes a buffer pad, the inner wall of which is attached to the outer walls of pipe one and pipe two. A protective frame is provided on the outer walls of pipe one and pipe two. A telescopic rod is provided on the upper surface of the protective frame. A sliding cylinder is fixedly connected to the inner wall of the protective frame. A sliding column is slidably connected to the inner wall of the sliding cylinder. A spring two is fixedly connected to the outer wall of the sliding cylinder.

[0009] Furthermore, one end of the sliding column is fixedly connected to the upper surface of the buffer pad.

[0010] Furthermore, one end of the second spring is fixedly connected to the outer wall of the sliding column.

[0011] Furthermore, the outer wall of the fixing rod is threadedly connected to the inner wall of the second connector, and the outer wall of the limiting block is slidably connected to the inner wall of the second connector.

[0012] Furthermore, the outer wall of the limiting block is slidably connected to the inner wall of the connector, and the limiting block is used to limit the connection of the connector.

[0013] Furthermore, the inner wall of the first reinforcing block is attached to the outer wall of the second reinforcing block, and the outer wall of the positioning plate is slidably connected inside the positioning groove.

[0014] Furthermore, the outer wall of the second connector is slidably connected to the lower surface of the connector.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, pipes one and two are aligned, the positioning plate is inserted into the positioning groove, the spring pushes the limiting block to limit the position, and the rotating wheel is screwed into the fixing rod to complete the stable connection. This solves the problems of weak connection and inconvenient installation and disassembly of traditional air ducts, and achieves the effect of fast and accurate positioning and stable connection. It effectively prevents the air duct connection from loosening and improves the efficiency and reliability of air duct installation.

[0017] 2. In this utility model, when the duct vibrates, the buffer pad absorbs energy, drives the sliding column to compress the spring, and works with the telescopic rod to reduce vibration transmission and noise. This effectively reduces noise pollution, improves the working environment, reduces vibration damage to the duct and accessories, extends the service life of the duct, and improves the overall operating quality of the ventilation system. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a combined alloy air duct proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the protective frame structure of a combined alloy air duct proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the positioning plate part of a combined alloy air duct proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the limiting block structure of a combined alloy air duct proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the sliding cylinder section of a combined alloy air duct proposed in this utility model;

[0023] Figure 6 This is a schematic diagram of the buffer pad structure of a combined alloy duct proposed in this utility model.

[0024] Legend:

[0025] 1. Pipe 1; 2. Pipe 2; 3. Connector 1; 4. Connector 2; 5. Telescopic rod; 6. Protective frame; 7. Reinforcing block 1; 8. Reinforcing block 2; 9. Positioning plate; 10. Positioning groove; 11. Rotary wheel; 12. Fixing rod; 13. Limiting block; 14. Spring 1; 15. Slide cylinder; 16. Buffer pad; 17. Slide column; 18. Spring 2. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-4 An embodiment of this utility model is provided: a combined alloy air duct, including a pipe 1, a pipe 2 on one side of the outer wall of the pipe 1, a combined component on the upper surface of the pipe 1, and noise reduction components on the outer walls of the pipe 1 and the pipe 2.

[0028] The assembly includes connector 2 4, which is a key component for connecting pipe 1 and pipe 2 2. Connector 2 4 can be moved below connector 3 and, through cooperation with other structures, achieves the connection and fixation of the pipes. The outer wall of connector 2 4 is fixedly connected to the upper surface of pipe 1, and connector 3 is fixedly connected to the upper surface of pipe 2 2. A positioning plate 9 is fixedly connected to one side of the outer wall of pipe 1, and the positioning plate 9 is fixed to the outer wall of pipe 1 1. A positioning groove 10 is opened on the outer wall of pipe 2 2. Its function is to achieve preliminary and accurate positioning of the two pipes by inserting the positioning plate 9 into the positioning groove 10 when connecting pipe 1 and pipe 2, ensuring accurate positioning during connection. The positioning groove 10 is opened on one side of the outer wall of pipe 2. A spring 14 is fixedly connected to the inner wall of connector 2 4. One end of spring 14 is fixedly connected to a limit block 13. A fixing rod 12 is threadedly connected to the inner wall of connector 1 3. A rotating wheel 11 is fixedly connected to one end of the fixing rod 12. The rotating wheel 11 is fixedly connected to the fixing rod 12. Rotating the rotating wheel 11 can drive the fixing rod 12 to rotate and move within connector 2 4 and connector 3. The outer wall of the fixing rod 12 is threadedly connected to the inner wall of connector 2 4. By rotating, the fixing rod 12 is screwed into connector 2 4, further tightly connecting pipe 1 and pipe 2 2 together to achieve a stable connection. Reinforcing blocks 2 8 are provided on both sides of the outer wall of pipe 1, and reinforcing blocks 1 7 are provided on both sides of pipe 2.

[0029] Specifically, pipe 1 and pipe 2 are first aligned, and the positioning plate 9 is inserted into the positioning groove 10 to achieve initial positioning. The reinforcing block 7 and reinforcing block 8 are attached to further enhance stability. Then, when connector 2 4 slides under connector 3 and reaches the appropriate position, spring 14 pushes the limiting block 13 to slide into connector 3 along the inside of connector 2 4 to complete the initial limiting. Then, the rotating wheel 11 is rotated, which drives the fixing rod 12 to rotate and move inside connector 2 4 and connector 1 3 and screw into connector 2 4 to achieve a stable connection between pipe 1 and pipe 2 2.

[0030] Reference Figures 1-6The noise reduction component includes a buffer pad 16 on the outer wall of pipe 1 and pipe 2, which has good elasticity and shock absorption performance. The inner wall of the buffer pad 16 is attached to the outer wall of pipe 1 and pipe 2. A protective frame 6 is provided on the outer wall of pipe 1 and pipe 2. A telescopic rod 5 is provided on the upper surface of the protective frame 6. A slide cylinder 15 is fixedly connected to the inner wall of the protective frame 6. A slide column 17 is slidably connected to the inner wall of the slide cylinder 15. A spring 18 is fixedly connected to the outer wall of the slide cylinder 15. When the slide column 17 slides inside the slide cylinder 15, it will compress the spring 18. The spring 18 will release air through a motor. The deformation absorbs vibration energy. One end of the sliding column 17 is fixedly connected to the upper surface of the buffer pad 16. One end of the spring 18 is fixedly connected to the outer wall of the sliding column 17. The outer wall of the fixing rod 12 is threadedly connected to the inner wall of the connector 4. The outer wall of the limiting block 13 is slidably connected to the inner wall of the connector 4. The outer wall of the limiting block 13 is slidably connected to the inner wall of the connector 3. The limiting block 13 is used to limit the connector 3. The inner wall of the reinforcing block 7 is attached to the outer wall of the reinforcing block 8. The outer wall of the positioning plate 9 is slidably connected to the inside of the positioning groove 10. The outer wall of the connector 4 is slidably connected to the lower surface of the connector 3.

[0031] Specifically, when pipe 1 and pipe 2 generate vibration or noise during operation, the buffer pad 16 first absorbs part of the vibration energy, and then drives the slide column 17 to slide inside the slide cylinder 15 to compress the spring 18. The spring 18 deforms to absorb the vibration, reducing the vibration transmitted to the protective frame 6. At the same time, the slide cylinder 15 and the slide column 17 work together to guide and buffer, and the telescopic rod 5 assists in support and adjustment to reduce noise.

[0032] Working principle: When a combined alloy duct is required, duct 1 and duct 2 are aligned. Positioning plate 9 is inserted into positioning groove 10 to achieve initial positioning. Reinforcing block 7 and reinforcing block 8 are attached to enhance the stability of the connection. When connector 2 4 enters below connector 3, when connector 2 4 reaches the appropriate position, spring 14 pushes limiting block 13 to slide along the inside of connector 2 4 and insert into connector 1 3 to limit connector 1 3. At this time, rotating wheel 11 drives fixing rod 12 to rotate and move within connector 2 4 and connector 1 3. When fixing rod 12 is screwed into connector 2 4, a stable connection between duct 1 and duct 2 is achieved.

[0033] In addition, when pipe 1 and pipe 2 generate vibration or noise during operation, the buffer pad 16 first absorbs part of the vibration energy, and then drives the sliding column 17 to slide inside the sliding cylinder 15, compressing the spring 18. The deformation of the spring 18 absorbs the vibration energy, reducing the vibration transmitted to the protective frame 6. At the same time, the sliding cooperation between the sliding cylinder 15 and the sliding column 17 plays a guiding and buffering role. The telescopic rod 5 provides auxiliary support and adjustment on the upper surface of the protective frame 6, thereby reducing the noise generated during the operation of the duct.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite alloy duct, comprising a duct (1), characterized in that: Pipe 2 (2) is provided on one side of the outer wall of pipe 1 (1), and a combined component is provided on the upper surface of pipe 1 (1). Noise reduction components are provided on the outer walls of pipe 1 (1) and pipe 2 (2). The assembly includes a second connector (4), the outer wall of which is fixedly connected to the upper surface of the first pipe (1), the upper surface of the second pipe (2) is fixedly connected to a first connector (3), a positioning plate (9) is fixedly connected to one side of the outer wall of the first pipe (1), a positioning groove (10) is provided on one side of the outer wall of the second pipe (2), a spring (14) is fixedly connected to the inner wall of the second connector (4), a limit block (13) is fixedly connected to one end of the spring (14), a fixing rod (12) is threadedly connected to the inner wall of the first connector (3), a rotating wheel (11) is fixedly connected to one end of the fixing rod (12), a reinforcing block (8) is provided on both sides of the outer wall of the first pipe (1), and a reinforcing block (7) is provided on both sides of the second pipe (2).

2. The combined alloy duct according to claim 1, characterized in that: The noise reduction component includes a buffer pad (16), the inner wall of which is attached to the outer wall of pipe one (1) and pipe two (2). A protective frame (6) is provided on the outer wall of pipe one (1) and pipe two (2). A telescopic rod (5) is provided on the upper surface of the protective frame (6). A slide cylinder (15) is fixedly connected to the inner wall of the protective frame (6). A slide column (17) is slidably connected to the inner wall of the slide cylinder (15). A spring two (18) is fixedly connected to the outer wall of the slide cylinder (15).

3. A combined alloy duct according to claim 2, characterized in that: One end of the slide (17) is fixedly connected to the upper surface of the buffer pad (16).

4. A combined alloy duct according to claim 2, characterized in that: One end of the second spring (18) is fixedly connected to the outer wall of the sliding column (17).

5. A combined alloy duct according to claim 1, characterized in that: The outer wall of the fixing rod (12) is threaded to the inner wall of the connector (4), and the outer wall of the limiting block (13) is slidably connected to the inner wall of the connector (4).

6. A combined alloy duct according to claim 1, characterized in that: The outer wall of the limiting block (13) is slidably connected to the inner wall of the connector (3), and the limiting block (13) is used to limit the connector (3).

7. A combined alloy duct according to claim 1, characterized in that: The inner wall of the first reinforcing block (7) is attached to the outer wall of the second reinforcing block (8), and the outer wall of the positioning plate (9) is slidably connected to the inside of the positioning groove (10).

8. A combined alloy duct according to claim 1, characterized in that: The outer wall of connector two (4) is slidably connected to the lower surface of connector one (3).