A modular ventilation duct structure

Abstract

This utility model relates to the field of ventilation ducts and discloses a modular ventilation duct structure, mainly including duct one, duct two, and a telescopic extension duct. It achieves quick assembly / disassembly and length adjustment through mechanical connection. Duct one and duct two are connected by a snap-fit ​​mechanism, including a connecting plate with a square connection hole, a fixing interface, and a spring locking device, enabling tool-free rapid assembly. Duct two has a sliding extension duct inside, and a push rod mechanism controls the engagement of the fixing rod with the fixing groove, achieving flexible adjustment and locking of the duct length. This utility model solves the problems of complex installation and fixed, non-adjustable length in traditional ventilation ducts, and features convenient assembly / disassembly, flexible adjustment, and reliable sealing. It is particularly suitable for ventilation applications requiring frequent layout adjustments. Its modular design not only improves construction efficiency but also reduces maintenance costs, providing a superior solution for ventilation systems in industrial and building fields.

Description

Technical Field

[0001] This utility model relates to the field of ventilation ducts, specifically a modular ventilation duct structure. Background Technology

[0002] In industrial, building, and temporary ventilation systems, traditional integrated ducts suffer from problems such as complex installation and difficult adjustment. Modular design, on the other hand, can significantly improve construction efficiency, reduce maintenance costs, and adapt to different spatial layout requirements. As modern buildings and industrial facilities place increasing demands on the flexibility of ventilation systems, modular ventilation ducts have become an important development direction in the field of ventilation engineering due to their scalability, ease of maintenance, and reusability.

[0003] Traditional ventilation ducts are mostly connected by flange bolts or welded, and the installation process relies on professional tools and skilled workers. Disassembly and assembly are time-consuming and difficult to adjust. In addition, the fixed length of the duct cannot flexibly adapt to changes in the site space, resulting in high customization costs and complex inventory management. In scenarios that require frequent modifications or temporary construction, the rigid connection method of the traditional structure not only affects construction efficiency, but may also lead to a decrease in sealing performance due to repeated disassembly and assembly, increasing the risk of air leakage. To address this, we propose a modular ventilation duct structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a modular ventilation duct structure that solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a modular ventilation duct structure, including duct one and duct two, both of which are tubular structures, and duct one and duct two are connected by a snap-fit ​​mechanism;

[0006] The second pipe is provided with an extension pipe mechanism, which includes an extension pipe and a fixing component. The extension pipe is slidably connected inside the second pipe, and the fixing component is provided on both the extension pipe and the second pipe.

[0007] Preferably, a connecting plate is fixedly installed on the outer wall of one end of the pipe, and a square connecting hole is provided on the connecting plate.

[0008] Preferably, a fixed interface is fixedly installed on one end plane of the second pipe. The fixed interface has an opening that is consistent with the channel opening of the second pipe. Four sets of sliding connection holes are opened on the plane of the fixed interface away from the second pipe, and the four sets of sliding connection holes are distributed in a circle. Sliding limit holes are symmetrically opened on the outer wall of the four sides of the fixed interface.

[0009] Preferably, the buckling mechanism includes a connecting block and a spring, the plane of the connecting block is hollow, and the springs are symmetrically fixedly installed at the hollow part of the connecting block;

[0010] The connecting block and the sliding limiting hole on the fixed interface are slidably connected;

[0011] The other end of the spring is fixedly connected to the top surface of the sliding connection hole in the fixed interface.

[0012] Preferably, the connecting plate and the sliding connecting hole on the fixed interface are slidably connected, and the spring is engaged with the square connecting hole on the connecting plate.

[0013] Preferably, the plane of the extension pipe has a first groove near the bottom, and the side wall of the extension pipe has a second groove near the bottom, with the first groove and the second groove being perpendicular to each other.

[0014] Preferably, sliding strips are symmetrically fixedly installed on both sides of the extended pipe and below the corresponding sliding groove two;

[0015] The inner wall of the second pipe is symmetrically provided with sliding grooves near the bottom;

[0016] The sliding bar and the sliding groove are slidably connected.

[0017] Preferably, the fixing assembly includes a push rod, a push plate, a first fixing rod, a second spring, and a second fixing rod. The push rod is slidably connected in a groove on the extension pipe, and a connecting seat is fixedly installed on the end face of the push rod inside the extension pipe. A connecting shaft is fixedly installed on the connecting seat. An inclined waist-shaped hole is opened on the plane of the push plate. The connecting shaft on the push rod and the waist-shaped hole on the push plate are tangent to and slidably connected.

[0018] A fixing rod 2 is fixedly installed on the side wall of the slide groove 2 on the extension pipe facing the push plate. A fixing rod 1 is fixedly installed on the end face of the fixing rod 2 away from the push plate, and the diameter of the fixing rod 1 is slightly larger than that of the fixing rod 2.

[0019] A spring is fixedly installed on the plane connecting the first fixed rod and the second fixed rod, corresponding to the periphery of the second fixed rod. The other end of the spring is fixedly connected to the end face of the groove on the extension pipe.

[0020] Preferably, the fixing component further includes fixing grooves, and a plurality of fixing grooves are provided on one of the inner walls of the second pipe and above the sliding groove, and the fixing grooves are equidistantly distributed along the horizontal axis.

[0021] The fixing rod and the fixing groove are engaged.

[0022] Compared with the prior art, the present invention provides a modular ventilation duct structure, which has the following advantages:

[0023] 1. This modular ventilation duct structure enables quick assembly and disassembly through a snap-fit ​​mechanism: After the connecting plate of duct one is inserted into the sliding connection hole of the fixed interface of duct two, the spring one inside the connecting block can be directly snapped into the square connection hole of the connecting plate to complete the locking. When disassembling, simply pull the connecting block upward to release the spring one. No tools are required, which greatly shortens the installation and maintenance time. It is especially suitable for ventilation scenarios that require frequent adjustments or temporary construction.

[0024] 2. This modular ventilation duct structure allows the extended duct to be freely pushed and pulled along the sliding groove of duct two. Through the linkage of the push rod of the fixing component with the push plate, the fixing rod one can be locked into the fixing groove at different positions to complete the length locking. The adjustment range is flexible and the positioning is precise, which can adapt to various installation space requirements and reduce the cost of customized processing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is an exploded view of the present invention;

[0027] Figure 3 This is a cross-sectional view of the present invention;

[0028] Figure 4 for Figure 2 A magnified view of part A in the diagram;

[0029] Figure 5 for Figure 2 A magnified view of part B in the diagram.

[0030] In the diagram: 1. Pipe 1; 2. Pipe 2; 3. Extension pipe; 4. Push rod; 5. Connecting block; 6. Spring 1; 7. Connecting plate; 8. Fixed interface; 9. Sliding bar; 10. Push plate; 11. Fixed rod 1; 12. Spring 2; 13. Fixed groove; 14. Sliding groove; 15. Fixed rod 2. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1-5A modular ventilation duct structure includes duct 1 and duct 2, both of which are tubular structures and are connected by a snap-fit ​​mechanism.

[0033] An extension pipe mechanism is provided inside pipe 2. The extension pipe mechanism includes an extension pipe 3 and a fixing component. The extension pipe 3 is slidably connected inside pipe 2. The fixing component is provided on both the extension pipe 3 and pipe 2.

[0034] Furthermore, a connecting plate 7 is fixedly installed on the outer wall of one end of the four sides of the pipe 1. The connecting plate 7 has square connecting holes. The connecting plate 7 can provide positioning guidance when the pipes are snapped together, ensuring that the connection angles of the pipes 1 and 2 are aligned.

[0035] Furthermore, a fixed interface 8 is fixedly installed on one end of the pipe 2. The fixed interface 8 has an opening on its plane that is consistent with the channel opening of the pipe 2. Four sets of sliding connection holes are opened on the fixed interface 8 on the plane opposite to the pipe 2, and the four sets of sliding connection holes are distributed in a circle. Sliding limit holes are symmetrically opened on the outer wall of the four sides of the fixed interface 8.

[0036] Furthermore, the latching mechanism includes a connecting block 5 and a spring 6. The plane of the connecting block 5 is hollow, and the spring 6 is symmetrically fixedly installed in the hollow part of the connecting block 5.

[0037] The connecting block 5 and the fixed interface 8 are slidably connected by the sliding limit hole;

[0038] The other end of spring 6 is fixedly connected to the top surface of the sliding connection hole in the fixed interface 8.

[0039] Furthermore, the sliding connection holes on the connecting plate 7 and the fixed interface 8 are slidably connected, and the spring 6 is engaged with the square connection hole on the connecting plate 7.

[0040] Furthermore, a groove 1 is provided on the plane of the extension pipe 3 near the bottom, and a groove 2 is provided on the side wall of the extension pipe 3 near the bottom, with groove 1 and groove 2 being perpendicular to each other.

[0041] Furthermore, sliding strips 9 are symmetrically fixedly installed on both sides of the extended pipe 3 and below the corresponding chute 2;

[0042] The inner wall of pipe 2 is symmetrically provided with sliding grooves 14 near the bottom;

[0043] The slider 9 and the sliding groove 14 are slidably connected.

[0044] Furthermore, the fixing assembly includes a push rod 4, a push plate 10, a fixing rod 11, a spring 12, and a fixing rod 15. The push rod 4 is slidably connected in the groove 1 on the extension pipe 3, and a connecting seat is fixedly installed on the end face of the push rod 4 inside the extension pipe 3. A connecting shaft is fixedly installed on the connecting seat. An inclined waist-shaped hole is opened on the plane of the push plate 10. The connecting shaft on the push rod 4 and the waist-shaped hole on the push plate 10 are tangent and slidably connected. The inclined waist-shaped hole of the push plate 10 converts the linear motion of the push rod 4 into lateral displacement.

[0045] A fixing rod 2 15 is fixedly installed on the side wall of the slide groove 2 on the extension pipe 3 facing the push plate 10. A fixing rod 11 is fixedly installed on the end face of the fixing rod 2 15 away from the push plate 10, and the diameter of the fixing rod 11 is slightly larger than that of the fixing rod 2 15.

[0046] A spring 12 is fixedly installed on the outer periphery of the fixed rod 15, corresponding to the plane connecting the fixed rod 11 and the fixed rod 2. The other end of the spring 12 is fixedly connected to the end face of the slide groove 2 on the extension pipe 3. The spring 12 not only pushes the fixed rod 11 into the fixed groove 13, but also assists the fixed rod 11 to disengage from the fixed groove 13 through its elastic reset function when unlocking, making the adjustment operation smoother.

[0047] Furthermore, the fixing component also includes fixing grooves 13. Multiple fixing grooves 13 are provided on one of the inner walls of the pipe 2 above the sliding groove 14, and the fixing grooves 13 are distributed at equal intervals along the horizontal axis.

[0048] The fixing rod 11 and the fixing groove 13 are engaged.

[0049] Structural Description:

[0050] Pipe 1: Pipe 1 is a tubular structure and is the basic ventilation unit of the ventilation system. One end of its four outer walls is fixed with a connecting plate 7. The square connecting hole on the connecting plate 7 can cooperate with the snap-fit ​​mechanism of pipe 2 to achieve quick connection with pipe 2. As a channel for ventilation airflow, it is one of the core units of the modular combination, undertakes the basic ventilation function and provides a connection interface.

[0051] Pipe 2: Pipe 2 is a tubular structure with a fixed interface 8 fixed at one end of the plane. It has a sliding groove 14 inside, which can cooperate with the sliding strip 9 of the extension pipe 3 to achieve a sliding connection. It is the intermediate unit connecting pipe 1 and extension pipe 3. It is connected to pipe 1 through the fixed interface 8 and provides expansion space for extension pipe 3, forming an adjustable length ventilation channel.

[0052] Extension pipe 3: Extension pipe 3 is a tubular structure that can be slidably connected inside pipe 2. Its plane and side walls are respectively provided with vertically corresponding sliding grooves 1 and 2. Sliding strips 9 are installed on both side walls to cooperate with the sliding grooves 14 of pipe 2 for guidance. It changes the overall length of the ventilation pipe by its own extension and contraction, and is a key component for realizing pipe length adjustment.

[0053] Push rod 4: Push rod 4 is slidably connected in the groove of the extension pipe 3. A connecting seat with a connecting shaft is fixed on the end face inside the extension pipe 3. The connecting shaft is slidably connected to the waist-shaped hole of the push plate 10. By manually pushing push rod 4, the push plate 10 can be moved, thereby controlling the locking and unlocking of the fixing component.

[0054] Connecting block 5: The plane of connecting block 5 is hollow and is slidably connected to the sliding limit hole of the fixed interface 8. Spring 6 is symmetrically fixed in its hollow part. By sliding itself, spring 6 can be driven to engage or disengage with the square connecting hole of the connecting plate 7. It is the operating part of the buckling mechanism and is used to control the connection locking state of pipe 1 and pipe 2.

[0055] Spring 6: One end of spring 6 is fixed to the hollow part of the connecting block 5, and the other end is fixed to the top surface of the sliding connection hole in the fixed interface 8. It has an elastic reset function. When pipe 1 and pipe 2 are connected, it can be locked into the square connection hole of the connecting plate 7. When disassembling, the locking is released by compressing spring 6. It is an elastic locking component of the buckle mechanism.

[0056] Connecting plate 7: The connecting plate 7 is fixed to the four outer walls of one end of pipe 1. It has a square connecting hole that can be inserted into the sliding connecting hole of the fixed interface 8. It is engaged with spring 6 to realize the connection and fixation of pipe 1 and pipe 2. It is the connection structure of pipe 1.

[0057] Fixed interface 8: Fixed interface 8 is fixed to one end plane of pipe 2 and has an opening that is consistent with the channel opening of pipe 2. It has four sets of sliding connection holes on the plane away from pipe 2 and sliding limit holes on the four outer walls, which are used to cooperate with the insertion of connecting plate 7 and the sliding of connecting block 5. It is the interface component for connecting pipe 2 and pipe 1.

[0058] Sliding bar 9: The sliding bar 9 is symmetrically fixed on both sides of the extension pipe 3 and below the corresponding sliding groove 2. It can be slidably connected with the sliding groove 14 on the inner wall of the second pipe 2. It provides guidance and limit for the extension and contraction of the extension pipe 3 in the second pipe 2, prevents the extension pipe 3 from deviating, and ensures the stability of the length adjustment process. It is a sliding guide component of the extension pipe 3.

[0059] Push plate 10: The plane of push plate 10 has an inclined waist-shaped hole, which is slidably connected to the connecting shaft of push rod 4. The side wall facing the slide groove 2 is fixed with a fixing rod 2 15. Through the cooperation of the waist-shaped hole and the connecting shaft, the linear movement of push rod 4 can be converted into its own lateral movement, thereby driving the fixing rod 1 11 to engage or separate from the fixing groove 13. It is the transmission component of the fixing assembly.

[0060] Fixed rod 11: Fixed rod 11 is fixed to the end face of fixed rod 2 15 away from push plate 10. Its diameter is slightly larger than that of fixed rod 2 15. It can be engaged with the fixing groove 13 of pipe 2. Under the action of spring 2 12, it can be stably embedded in the fixing groove 13 to realize the length locking of extended pipe 3 and pipe 2 2.

[0061] Spring 2 12: Spring 2 12 is sleeved around the fixed rod 2 15. One end is fixed to the connecting plane between the fixed rod 1 11 and the fixed rod 2 15, and the other end is fixed to the end face of the slide groove of the extension pipe 3. It has an elastic reset function and can push the fixed rod 1 11 into the fixed groove 13. When unlocking, the fixed rod 1 11 is disengaged from the fixed groove 13 by compressing the spring 2 12. It is the elastic drive component of the fixing assembly.

[0062] Fixed groove 13: Fixed groove 13 is opened above the sliding groove 14 on the inner wall of pipe 2, and is distributed at equal intervals along the horizontal axis. It can be engaged with fixed rod 11. Through the fixed groove 13 at different positions, multiple length locks of the extended pipe 3 can be achieved, providing multiple fixed nodes for pipe length adjustment. It is the positioning structure for length adjustment.

[0063] Sliding groove 14: The sliding groove 14 is symmetrically opened on the inner wall of pipe 2 near the bottom. It can be slidably connected with the sliding strip 9 of the extension pipe 3. It provides a guide trajectory for the extension movement of the extension pipe 3 in pipe 2, restricts the offset direction of the extension pipe 3, and ensures the smoothness of the length adjustment process. It is a guide structure on pipe 2 that cooperates with the sliding of the extension pipe 3.

[0064] Fixed rod 2 15: Fixed rod 2 15 is fixed to the side wall of push plate 10 facing slide groove 2. The end away from push plate 10 is connected to fixed rod 1 11. Spring 2 12 is sleeved on the outside, which serves to connect push plate 10 and fixed rod 1 11, and at the same time provides a mounting carrier for spring 2 12. It is the connecting component in the fixed assembly that transmits the power of push plate 10.

[0065] Working principle: During the pipe connection stage, pipe 1 is inserted into the sliding connection hole of the fixed interface 8 of pipe 2 through the connecting plate 7 at its end. At this time, the connecting block 5 on the outer wall of the fixed interface 8, under the elastic action of spring 6, drives spring 6 to engage with the square connection hole of the connecting plate 7, realizing the quick locking of pipe 1 and pipe 2. When disassembly is required, pull the connecting block 5 upward, and the connecting block 5 slides along the sliding limit hole of the fixed interface 8, compressing spring 6 to disengage it from the square connection hole of the connecting plate 7, thus separating pipe 1 and pipe 2. The whole process does not require tools. The connection state is switched by the elastic extension and contraction of spring 6 and the sliding operation of connecting block 5, realizing the quick assembly and disassembly of the two pipe sections.

[0066] During the length adjustment phase, the extension pipe 3, through the sliding strips 9 on both sides, engages with the sliding groove 14 on the inner wall of the pipe 2, allowing it to freely extend and retract along the axial direction of the pipe 2. When the length of the extension pipe 3 needs to be fixed, the spring 12 in the fixing assembly is in a naturally extended state, pushing the fixing rod 11 into the fixing groove 13 on the inner wall of the pipe 2, thus locking the relative position of the extension pipe 3 and the pipe 2. If the length needs to be adjusted, the push rod 4 is manually pushed to slide along the sliding groove 1 of the extension pipe 3. The connecting shaft at the end of the push rod 4 slides in the inclined waist-shaped hole of the push plate 10, causing the push plate 10 to move towards the inside of the extension pipe 3. The push plate 10 pulls the fixing rod 11 through the fixing rod 15 to compress the spring 12, causing the fixing rod 11 to disengage from the fixing groove 13. At this time, the extension pipe 3 can be freely pushed and pulled to the required length. After releasing the push rod 4, the spring 12 returns to its original position, pushing the fixing rod 11 back into the corresponding fixing groove 13, thus completing the length locking.

[0067] The snap-fit ​​mechanism, through the linkage of connecting block 5, spring 1 6, connecting plate 7 and fixing interface 8, enables tool-free quick assembly and disassembly of pipe 1 and pipe 2, greatly improving installation and maintenance efficiency; the pipe extension mechanism, through the coordinated action of push rod 4, push plate 10, fixing rod 11, fixing rod 2 15, spring 2 12, fixing groove 13, sliding bar 9 and sliding groove 14, enables flexible adjustment and locking of pipe length, adapting to different installation space requirements.

[0068] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular ventilation duct structure, characterized in that, include: Pipe 1 (1) and Pipe 2 (2) are both tubular structures and are connected by a snap-fit ​​mechanism. The second pipe (2) is provided with an extension pipe mechanism, which includes an extension pipe (3) and a fixing component. The extension pipe (3) is slidably connected inside the second pipe (2), and the fixing component is provided on both the extension pipe (3) and the second pipe (2).

2. The modular ventilation duct structure according to claim 1, characterized in that, A connecting plate (7) is fixedly installed on the outer wall of one end of the four sides of the pipe (1), and a square connecting hole is provided on the connecting plate (7).

3. A modular ventilation duct structure according to claim 2, characterized in that, A fixed interface (8) is fixedly installed on one end of the pipe (2). The fixed interface (8) has an opening on its surface that is consistent with the channel opening of the pipe (2). The fixed interface (8) has four sets of sliding connection holes on its surface away from the pipe (2), and the four sets of sliding connection holes are distributed in a circle. Sliding limit holes are symmetrically opened on the outer walls of the four sides of the fixed interface (8).

4. A modular ventilation duct structure according to claim 3, characterized in that, The buckling mechanism includes a connecting block (5) and a spring (6). The plane of the connecting block (5) is hollow, and the spring (6) is symmetrically fixedly installed at the hollow part of the connecting block (5). The connecting block (5) and the sliding limiting hole on the fixed interface (8) are slidably connected; The other end of the spring (6) is fixedly connected to the top surface of the sliding connection hole in the fixed interface (8).

5. A modular ventilation duct structure according to claim 4, characterized in that, The connecting plate (7) and the fixed interface (8) are slidably connected by sliding connecting holes, and the spring (6) is engaged with the square connecting hole on the connecting plate (7).

6. A modular ventilation duct structure according to claim 1, characterized in that, The extension pipe (3) has a groove one near the bottom of its plane and a groove two near the bottom of its side wall, with groove one and groove two being perpendicular to each other.

7. A modular ventilation duct structure according to claim 6, characterized in that, Sliding strips (9) are symmetrically fixedly installed on both sides of the extended pipe (3) and below the corresponding sliding groove 2. The inner wall of the second pipe (2) is symmetrically provided with sliding grooves (14) near the bottom; The sliding bar (9) and the sliding groove (14) are slidably connected.

8. A modular ventilation duct structure according to claim 7, characterized in that, The fixing assembly includes a push rod (4), a push plate (10), a fixing rod one (11), a spring two (12), and a fixing rod two (15). The push rod (4) is slidably connected in the groove one on the extension pipe (3), and a connecting seat is fixedly installed on the end face of the push rod (4) inside the extension pipe (3). A connecting shaft is fixedly installed on the connecting seat. An inclined waist-shaped hole is opened on the plane of the push plate (10). The connecting shaft on the push rod (4) and the waist-shaped hole on the push plate (10) are tangent and slidably connected. A fixing rod 2 (15) is fixedly installed on the side wall of the push plate (10) facing the slide groove 2 on the extension pipe (3). A fixing rod 1 (11) is fixedly installed on the end face of the fixing rod 2 (15) away from the push plate (10), and the diameter of the fixing rod 1 (11) is larger than that of the fixing rod 2 (15). The plane connecting the first fixed rod (11) and the second fixed rod (15) is fixedly installed with a second spring (12) on the periphery of the second fixed rod (15). The other end of the second spring (12) is fixedly connected to the end face of the second groove on the extension pipe (3).

9. A modular ventilation duct structure according to claim 8, characterized in that, The fixing component also includes a fixing groove (13). Multiple fixing grooves (13) are provided on one of the inner walls of the second pipe (2) above the sliding groove (14), and the fixing grooves (13) are distributed at equal intervals along the horizontal axis. The fixing rod (11) and the fixing groove (13) are engaged.

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