Easy-to-replace and maintain modular ventilation ducts

Abstract

A modular ventilation duct for easy replacement and maintenance includes a duct base, connecting ducts, limiting blocks, spring rods, limiting rods, and a first connecting rod. The connecting ducts are located on both sides of the duct base, and the limiting blocks are fixed on both sides of the duct base. Limiting holes are formed on the limiting blocks. The spring rod is fixed to the duct base and the limiting rod is fixed to a mounting plate of the spring rod, allowing the limiting rod to slide within the limiting block. The first connecting rod is fixed to the connecting duct and connects to the limiting holes in the limiting blocks. The limiting rod also connects to the threaded limiting holes in the first connecting rod. Because this invention connects the ventilation duct assembly via a snap-fit ​​connection, the user can pull out the limiting rod by stretching the spring rod, then connect the first connecting rod to the limiting hole in the limiting block, and then release the spring rod. This effectively fixes the first connecting rod to the limiting rod, thus connecting the ventilation duct assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of ventilation ducts, specifically to a modular ventilation duct that is easy to replace and maintain. Background Technology

[0002] Ventilation ducts play a vital role in industrial and civil buildings. As a key component of ventilation and air conditioning engineering, they are typically made of metal or composite materials. Their main function is to achieve efficient air circulation, creating a comfortable and healthy environment inside buildings. In industrial settings, ventilation ducts effectively remove harmful gases, dust, and other pollutants generated during production, reducing their concentration and preventing harm to employee health. They also help reduce the risk of safety accidents such as fires and explosions, ensuring the smooth operation of production activities.

[0003] According to Chinese patent CN222887429U, a stainless steel air conditioning ventilation duct is disclosed, comprising: a fixed body, the main body including a duct shell; and a sound insulation component, the sound insulation component including a supporting duct, sound insulation cotton, limiting buckles, clamps, limiting slots, and limiting grooves. The duct shell has a cavity in the middle, and the outer surface of the supporting duct is connected to the sound insulation cotton by adhesive bonding. Limiting slots are evenly opened at the front and rear ends of the outer surface of the sound insulation cotton. Clamps are evenly installed at the front and rear ends of the outer surface of the supporting duct, and a limiting buckle is installed at one end of the inner surface of the clamp. The limiting buckle is connected to the inside of the limiting slot by a snap-fit ​​method. This addresses the problem that in the actual use of existing ventilation ducts, the duct itself has a sound insulation effect, and the sound insulation cotton is usually installed inside by direct adhesive bonding. However, as time goes on, the adhesion of the sound insulation cotton decreases, and the internal sound insulation cotton will curl up, which leads to a decrease in the sound insulation performance of the duct itself.

[0004] However, existing ventilation ducts have drawbacks in use. Because the ventilation ducts used inside buildings are long and most of them are multi-component bolted connections, although convenient for production and transportation, they require each bolt to be tightened individually during installation, resulting in low installation efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the problem that existing ventilation ducts are relatively long when used inside buildings, and most of them are multi-component bolted connections. Although they are convenient for production and transportation, they require each bolt to be tightened individually during installation, resulting in low installation efficiency.

[0006] The technical solution adopted to solve the above technical problems is:

[0007] A modular ventilation duct for easy replacement and maintenance includes a duct base, a connecting duct, a limiting block, a spring rod, a limiting rod, and a first connecting rod. The connecting duct is located on both sides of the duct base. The limiting block is fixed on both sides of the duct base and has a limiting hole. The spring rod is fixed to the duct base and the limiting rod is fixed to the mounting plate of the spring rod. The limiting rod slides within the limiting block. The first connecting rod is fixed to the connecting duct and is connected to the limiting hole of the limiting block. The limiting rod is connected to the threaded limiting hole of the first connecting rod.

[0008] As a preferred embodiment of this utility model, the pipe base has fixed grooves on both sides, and the connecting pipe slides in the fixed grooves to facilitate the user's connection.

[0009] As a preferred embodiment of this utility model, a docking groove is provided in the fixed groove, the docking groove is arranged in a circumferential array around the fixed groove, and a second docking rod is fixed on the outside of the docking pipe. The second docking rod is connected to the docking groove, which can effectively improve the stability of the docking.

[0010] As a preferred embodiment of this utility model, the first connecting rod is L-shaped and has a receiving groove. The connecting pipe is fixed with a sealing cover plate at the receiving groove. The sealing cover plate is concentrically fitted with the connecting pipe, and the radius of the sealing cover plate is larger than that of the pipe base, which can effectively ensure the sealing of the equipment.

[0011] As a preferred technical solution of this utility model, a limiting screw is threadedly connected to the limiting block on the rear side of the pipe base. The limiting screw is threadedly connected to the threaded limiting hole of the first connecting rod. An assist rod is fixed on the limiting screw to facilitate rotation by the user.

[0012] As a preferred embodiment of this utility model, a telescopic base is fixed on the limiting block, and a telescopic plate is slidably connected inside the telescopic base. The telescopic base and the telescopic plate are fixed by bolts, and a mounting seat is fixed on the telescopic plate. The mounting seat has a fixing hole to facilitate the user to adjust the fixed position of the device.

[0013] The beneficial effects of this utility model are as follows:

[0014] Because this utility model connects the ventilation duct assembly by snap-fit, the user can pull out the limiting rod by stretching the spring rod, then connect the first docking rod to the limiting hole in the limiting block, and then release the spring rod to effectively fix the first docking rod through the limiting rod, thereby connecting the ventilation duct assembly. Attached Figure Description

[0015] Figure 1 This is the first axial view of the present invention;

[0016] Figure 2 for Figure 1 A magnified view of part A;

[0017] Figure 3 This is the second axial view of the present invention;

[0018] Figure 4 This is the third axial view of the present invention.

[0019] In the diagram: 1. Pipe base; 2. Connecting pipe; 3. Limiting block; 4. Spring rod; 5. Limiting rod; 6. First connecting rod; 7. Fixing groove; 8. Connecting groove; 9. Second connecting rod; 10. Sealing cover plate; 11. Limiting screw; 12. Telescopic base; 13. Telescopic plate; 14. Mounting seat; 15. Receiving groove; 16. Assisting rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0025] Example 1

[0026] exist Figure 1-4 This utility model provides a technical solution: a modular ventilation duct that is easy to replace and maintain, including a duct base 1, a connecting duct 2, a limiting block 3, a spring rod 4, a limiting rod 5, and a first connecting rod 6. The connecting duct 2 is located on both sides of the duct base 1, the limiting block 3 is fixed on both sides of the duct base 1, and the limiting block 3 has a limiting hole. The spring rod 4 is fixed on the duct base 1, the limiting rod 5 is fixed on the mounting plate of the spring rod 4, and the limiting rod 5 slides within the limiting block 3. The first connecting rod 6 is fixed on the connecting duct 2 and is connected to the limiting hole of the limiting block 3. The limiting rod 5 is connected to the threaded limiting hole of the first connecting rod 6. When installing or disassembling, the user pulls the spring rod 4 to connect the connecting duct 2 to the duct base 1, and at the same time connects the first connecting rod 6 to the limiting hole of the limiting block 3. Finally, the spring rod 4 is released, so that the limiting rod 5 is connected to the threaded limiting hole of the first connecting rod 6.

[0027] In one aspect of this embodiment, the pipe base 1 has fixed grooves 7 on both sides, the connecting pipe 2 slides in the fixed grooves 7, the fixed grooves 7 have connecting grooves 8, the connecting grooves 8 are arranged in a circumferential array around the fixed grooves 7, and a second connecting rod 9 is fixed on the outside of the connecting pipe 2. The second connecting rod 9 is connected to the connecting groove 8. Before connecting the connecting pipe 2 to the fixed groove 7 of the pipe base 1, the user first connects the connecting pipe 2 to the connecting groove 8 through the second connecting rod 9 to improve the stability of the connection.

[0028] In one aspect of this embodiment, the first docking rod 6 is L-shaped and has a receiving groove 15. A sealing cover 10 is fixed to the docking pipe 2 at the receiving groove 15. The sealing cover 10 is concentrically fitted with the docking pipe 2. The radius of the sealing cover 10 is larger than that of the pipe base 1. A limiting screw 11 is threadedly connected to the limiting block 3 on the rear side of the pipe base 1. The limiting screw 11 is threadedly connected to the threaded limiting hole of the first docking rod 6. An assisting rod 16 is fixed on the limiting screw 11. When the connection is completed, the sealing cover 10 is located on the pipe base 1, thereby improving the sealing performance of the connection. At the same time, the user can rotate the assisting rod 16 to thread the limiting screw 11 to the threaded limiting hole of the first docking rod 6, thereby improving the stability of the connection.

[0029] In one aspect of this embodiment, a telescopic base 12 is fixed on the limiting block 3, and a telescopic plate 13 is slidably connected inside the telescopic base 12. The telescopic base 12 and the telescopic plate 13 are fixed by bolts, and a mounting seat 14 is fixed on the telescopic plate 13. The mounting seat 14 has a fixing hole.

[0030] The working principle of this utility model is as follows: In the process of use, firstly, the user connects the connecting pipe 2 to the fixing groove 7 of the pipe base 1, and then connects the second connecting rod 9 to the connecting groove 8 to improve the stability of the connection. Then, by pulling the spring rod 4, the first connecting rod 6 is connected to the limiting hole of the limiting block 3. Finally, the spring rod 4 is released so that the limiting rod 5 is connected to the threaded limiting hole of the first connecting rod 6. Finally, the user rotates the assist rod 16 to thread the limiting screw 11 to the threaded limiting hole of the first connecting rod 6 to complete the fixation. The entire installation and disassembly process does not require the use of tools, making it convenient for users to use.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A combined ventilation duct convenient for replacement and maintenance, comprising a duct base (1), a butt joint duct (2), a limiting block (3), a spring rod (4), a limiting rod (5) and a first butt joint rod (6), characterized in that: The docking pipe (2) is located on both sides of the pipe base (1). The limiting block (3) is fixed on both sides of the pipe base (1). The limiting block (3) has a limiting hole. The spring rod (4) is fixed on the pipe base (1). The limiting rod (5) is fixed on the mounting plate of the spring rod (4). The limiting rod (5) slides in the limiting block (3). The first docking rod (6) is fixed on the docking pipe (2). The first docking rod (6) is connected to the limiting hole of the limiting block (3). The limiting rod (5) is connected to the threaded limiting hole of the first docking rod (6).

2. The modular vent duct assembly of claim 1, wherein: The pipe base (1) has fixed grooves (7) on both sides, and the connecting pipe (2) slides in the fixed grooves (7).

3. The modular vent duct assembly of claim 2, wherein: The fixed groove (7) has a docking groove (8) inside, and the docking groove (8) is arranged in a circumferential array around the fixed groove (7). A second docking rod (9) is fixed on the outside of the docking pipe (2), and the second docking rod (9) is connected to the docking groove (8).

4. The modular vent duct for easy service access replacement of claim 1, wherein: The first docking rod (6) is L-shaped and has a receiving groove (15). The docking pipe (2) has a sealing cover (10) fixed at the receiving groove (15). The sealing cover (10) is concentrically fitted with the docking pipe (2). The radius of the sealing cover (10) is greater than that of the pipe base (1).

5. The modular vent duct assembly of claim 4, wherein: A limiting screw (11) is threadedly connected to the limiting block (3) on the rear side of the pipe base (1). The limiting screw (11) is threadedly connected to the threaded limiting hole of the first connecting rod (6). An assist rod (16) is fixed on the limiting screw (11).

6. The modular vent duct assembly of claim 1, wherein: A telescopic base (12) is fixed on the limiting block (3), and a telescopic plate (13) is slidably connected inside the telescopic base (12). The telescopic base (12) and the telescopic plate (13) are fixed by bolts. A mounting seat (14) is fixed on the telescopic plate (13), and a fixing hole is opened on the mounting seat (14).

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