A quick-mounting air pipe connecting assembly
By designing a quick-install duct connection assembly and utilizing a threaded rod and handle tightening structure, the problem of inconvenient disassembly of existing duct connectors is solved, enabling quick positioning and locking of the duct, reducing maintenance costs and improving the convenience and sealing of the connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LAMINITE BUILDING SYST (SUZHOU) CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-09
AI Technical Summary
Existing duct connectors are inconvenient to disassemble and maintain, leading to increased maintenance costs.
The quick-install duct connection assembly includes first and second flange interfaces, inner cylinder, clamp plate, threaded rod and nut structure. The duct can be quickly positioned and locked by tightening the threaded rod with the handle. Combined with the design of sealing ring and gasket, the connection is guaranteed to be airtight and convenient.
It enables quick disassembly and maintenance of air ducts, reduces maintenance costs, and improves the convenience of connection and sealing.
Smart Images

Figure CN224339671U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of duct connection technology, and in particular to a quick-install duct connection component. Background Technology
[0002] Air ducts are piping systems used for air transport and distribution, commonly found in air conditioning systems, ventilation systems, and industrial exhaust systems. The main function of air ducts is to ensure the effective flow and distribution of air within a building or equipment. Air ducts can be categorized into metal ducts, composite ducts, and polymer ducts. Metal ducts include galvanized iron ducts, aluminum ducts, and stainless steel ducts; composite ducts include phenolic aluminum foil composite ducts and fiberglass composite ducts; and polymer ducts include rigid polyvinyl chloride ducts.
[0003] During use, ducts may become too short, requiring the connection of two ducts. Existing duct connectors typically fix the two ducts together directly, which is inconvenient for subsequent disassembly, maintenance, and replacement. This necessitates replacing the entire duct, increasing maintenance costs. To address this issue, we propose a quick-install duct connector assembly. Utility Model Content
[0004] The purpose of this invention is to provide a quick-install duct connection assembly to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A quick-install duct connection assembly includes a first flange interface and a second flange interface. Both the first and second flange interfaces have outer shells connected to their opposite sides, and inner cylinders connected to their opposite sides. A first duct is located on the left side of the first flange interface, and a second duct is located on the right side of the second flange interface. The outer surfaces of the two inner cylinders are slidably connected to the inner walls of the first and second ducts, respectively. Symmetrical clamps are connected to the opposite sides of both the first and second flange interfaces. The sides of the two sets of clamps that are close to each other contact the outer surfaces of the first and second ducts, respectively. Symmetrical threaded rods are threaded into the interiors of both outer shells. Symmetrical fixing components are provided inside the first and second flange interfaces.
[0007] In a further embodiment, both sets of fixing components are provided with bolts, both sets of bolts are located inside the first flange interface and the second flange interface, the right ends of both sets of bolts pass through the first flange interface and the second flange interface in sequence and extend to the right side of the second flange interface, and the outer surfaces of both sets of bolts are threaded with nuts.
[0008] In a further embodiment, the outer surfaces of both sets of bolts are provided with washers, and the right side of both sets of washers is in contact with the left side of the nut.
[0009] In a further embodiment, a first sealing ring is connected to the right side of the first flange interface, and a second sealing ring is connected to the left side of the second flange interface.
[0010] In a further embodiment, each of the two sets of threaded rods has a protective pad connected to one end of each other, and both sets of protective pads are made of rubber.
[0011] In a further embodiment, each of the two sets of threaded rods has a handle connected to one end that is far apart from the other, and both sets of handles are circular.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This device, through a fixing assembly consisting of bolts and nuts, allows the first flange interface and the second flange interface to be disassembled as a whole, facilitating subsequent maintenance and replacement. The duct is slidably connected to the inner cylinder through the flange interface, and the tightening structure of the threaded rod and handle enables quick positioning and locking of the duct. This eliminates the tedious operation of fixing each duct with bolts individually, and solves the problem of directly fixing two ducts together, which is inconvenient for subsequent disassembly, maintenance and replacement, and requires the replacement of the entire duct, increasing maintenance costs. Attached Figure Description
[0014] Figure 1 This is a front view structural diagram of a quick-install duct connection assembly.
[0015] Figure 2 For quick-installation duct connection components Figure 1 A magnified structural diagram of part A in the middle.
[0016] Figure 3 This is a side view of the quick-installation duct connection assembly.
[0017] Figure 4 For quick-installation duct connection components Figure 3 A magnified structural diagram of section B in the middle.
[0018] Figure 5 Top view of the quick-install duct connection assembly
[0019] In the diagram: 1. First flange interface; 2. Second flange interface; 3. First air duct; 4. Second air duct; 5. Fixing assembly; 501. Bolt; 502. Nut; 6. Outer shell; 7. Washer; 8. Inner cylinder; 9. Clamping plate; 10. Threaded rod; 11. Handle; 12. Protective pad; 13. First sealing ring; 14. Second sealing ring. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-5 In this utility model, a quick-install duct connection assembly includes a first flange interface 1 and a second flange interface 2. A housing 6 is connected to the opposite side of both the first flange interface 1 and the second flange interface 2. An inner cylinder 8 is connected to the opposite side of both the first flange interface 1 and the second flange interface 2. A first duct 3 is located on the left side of the first flange interface 1, and a second duct 4 is located on the right side of the second flange interface 2. The outer surfaces of the two inner cylinders 8 are slidably connected to the inner walls of the first duct 3 and the second duct 4, respectively. The opposite side of both the first flange interface 1 and the second flange interface 2 is connected to... There are symmetrical clamping plates 9. The sides of the two sets of clamping plates 9 that are close to each other are in contact with the outer surfaces of the first air duct 3 and the second air duct 4, respectively. The interiors of the two outer shells 6 are threaded with symmetrical threaded rods 10. The interiors of the first flange interface 1 and the second flange interface 2 are provided with symmetrical fixing components 5. By fitting the air duct into the inner cylinder 8, the inner wall of the air duct can be supported, preventing the air duct from being deformed by the pressure of the threaded rods 10. Through the cooperation of the threaded rods 10 and the clamping plates 9, the threaded rods 10 drive the clamping plates 9 to press the air duct, thereby fixing the air duct on the inner cylinder 8.
[0022] Both sets of fixing components 5 are equipped with bolts 501. Both sets of bolts 501 are located inside the first flange interface 1 and the second flange interface 2. The right ends of both sets of bolts 501 pass through the first flange interface 1 and the second flange interface 2 in sequence and extend to the right side of the second flange interface 2. Nuts 502 are threaded onto the outer surface of both sets of bolts 501. Through the cooperation of bolts 501 and nuts 502, the two flange interfaces can be connected together, and at the same time, it is convenient for the two air ducts to be separated later.
[0023] Both sets of bolts 501 have washers 7 on their outer surfaces. The right side of both sets of washers 7 is in contact with the left side of the nut 502. Since the washers 7 are made of rubber, they can protect the surface of the flange interface from being scratched by the nut 502.
[0024] A first sealing ring 13 is connected to the right side of the first flange interface 1, and a second sealing ring 14 is connected to the left side of the second flange interface 2. The two sealing rings are tightly connected to the two flange interfaces to maintain the sealing of the connection between the two flange interfaces.
[0025] Each of the two sets of threaded rods 10 has a protective pad 12 connected to one end of each other. Both sets of protective pads 12 are made of rubber. The protective pads 12 follow the threaded rods 10 and press against the clamping plate 9, which can prevent the threaded rods 10 from damaging the surface of the clamping plate 9.
[0026] Each of the two sets of threaded rods 10 has a handle 11 connected to one end of each other. Both handles 11 are round. The handles 11 make it easier for the user to rotate the threaded rods 10, thus improving the convenience of the device.
[0027] The working principle of this utility model is as follows:
[0028] During use, firstly, insert the first air duct 3 into the inner cylinder 8 of the first flange interface 1. Then, rotate the threaded rod 10 sequentially through the handle 11. The rotating threaded rod 10 drives the protective pad 12 to move, causing the protective pad 12 to press against the clamp 9, thereby fixing the first air duct 3 onto the first flange interface 1. The second air duct 4 is installed to the second flange interface 2 in the same way. Then, insert the bolt 501 sequentially into the first flange interface 1 and the second flange interface 2, and install the washer 7 and nut 502 sequentially onto the bolt 501, thereby connecting the first flange interface 1 and the second flange interface 2.
[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A quick-install duct connection assembly, characterized in that: The device includes a first flange interface (1) and a second flange interface (2). Both the first flange interface (1) and the second flange interface (2) are connected to a shell (6) on their opposite sides. Both the first flange interface (1) and the second flange interface (2) are connected to an inner cylinder (8) on their opposite sides. The left side of the first flange interface (1) is provided with a first air duct (3), and the right side of the second flange interface (2) is provided with a second air duct (4). The outer surfaces of the two inner cylinders (8) are slidably connected to the inner walls of the first air duct (3) and the second air duct (4), respectively. Both the first flange interface (1) and the second flange interface (2) are connected to symmetrical clamps (9) on their opposite sides. The sides of the two sets of clamps (9) that are close to each other are in contact with the outer surfaces of the first air duct (3) and the second air duct (4), respectively. Both shells (6) are threaded with symmetrical threaded rods (10). The interior of the first flange interface (1) and the interior of the second flange interface (2) are provided with symmetrical fixing components (5).
2. The quick-install duct connection assembly according to claim 1, characterized in that: Both sets of fixing components (5) are provided with bolts (501). Both sets of bolts (501) are located inside the first flange interface (1) and the second flange interface (2). The right ends of both sets of bolts (501) pass through the first flange interface (1) and the second flange interface (2) in sequence and extend to the right side of the second flange interface (2). Nuts (502) are threaded onto the outer surface of both sets of bolts (501).
3. The quick-installation duct connection assembly according to claim 2, characterized in that: Both sets of bolts (501) have washers (7) on their outer surfaces, and the right side of both sets of washers (7) is in contact with the left side of the nut (502).
4. The quick-install duct connection assembly according to claim 1, characterized in that: The first flange interface (1) is connected to the right side of the first sealing ring (13), and the second flange interface (2) is connected to the left side of the second sealing ring (14).
5. A quick-install duct connection assembly according to claim 1, characterized in that: Both sets of threaded rods (10) have protective pads (12) connected to their respective ends, and both sets of protective pads (12) are made of rubber.
6. A quick-install duct connection assembly according to claim 1, characterized in that: Both sets of threaded rods (10) have a handle (11) connected to their opposite ends, and both sets of handles (11) are circular.