Ventilation duct with sound attenuation structure

Abstract

The utility model discloses a ventilation pipeline with silencing structure, including pipeline body, the inside of pipeline body is equipped with cross bar, the inside installation of pipeline body has silencing mechanism, install the connecting mechanism on the cross bar, the utility model relates to ventilation pipeline technical field can extrude perforated plate to the vertical pole direction etc., make perforated plate etc. move through the vertical pole and drive the stopper, and the stopper is extruded to the spring again with the sleeve, and then drive perforated plate etc. into the pipeline body, loosen perforated plate etc. to make the most outside damping sound insulation felt layer and the inner wall of pipeline body adhere to each other, thereby when the pipeline body has wind and passes through, the wind will contact with perforated plate, and then the super fine glass cotton layer and the damping sound insulation felt layer reduce the noise, so as to reach the resistance silencing, like this can intervene in the source of noise, and the actual silencing effect is more ideal.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, specifically a ventilation duct with a sound-absorbing structure. Background Technology

[0002] Ventilation ducts are metal or non-metal pipes used in ventilation and air conditioning systems for industrial and civil buildings. They are a type of municipal infrastructure designed to circulate air and reduce the concentration of harmful gases. Ventilation ducts are widely used in building construction projects such as restaurants, hotels, hospitals, factories, shopping malls, and office buildings.

[0003] Currently, most existing ventilation ducts simply wrap sound-absorbing cotton around the outside of the duct to reduce noise. However, the noise generated inside the ventilation duct is mainly caused by the physical action of airflow inside the duct colliding and rubbing against the duct wall. Simply setting a sound-absorbing structure on the outside of the duct cannot effectively intervene at the source of noise, and its actual sound-absorbing effect is not ideal. Therefore, this application proposes a ventilation duct with a sound-absorbing structure to solve this problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a ventilation duct with a sound-absorbing structure. This solves the problem that in some existing ventilation ducts, the noise generated inside is mainly caused by physical interactions such as the collision and friction between the airflow inside the duct and the duct wall. Simply setting a sound-absorbing structure on the outside of the duct cannot effectively intervene at the source of the noise.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a ventilation duct with a sound-absorbing structure, comprising a duct body, a crossbar provided inside the duct body, a handle fixedly connected to the side of the crossbar near the opening end of the duct body, a sound-absorbing mechanism installed inside the duct body, and a connecting mechanism installed on the crossbar; The silencing mechanism includes a collar disposed inside the pipe body. Several sleeves are fixedly connected to the outer periphery of the collar, and a vertical rod is slidably connected to the opening of the sleeve. A perforated plate is fixedly connected to the end of the vertical rod away from the sleeve, and an ultra-fine glass wool layer is fixedly connected to the outside of the perforated plate. A damping sound insulation felt layer is fixedly connected to the outside of the ultra-fine glass wool layer. A clamping component is installed inside the sleeve.

[0006] Preferably, the clamping assembly includes a stop block and a spring disposed inside the sleeve, wherein the outer wall of the stop block is slidably connected to the inner wall of the sleeve, the stop block is fixedly connected to the vertical rod, and the two ends of the spring are respectively connected to the sleeve and the stop block.

[0007] Preferably, the connecting mechanism includes several connecting rods fixedly connected to the outer wall of the sleeve at the end away from the vertical rod, and a connecting plate is fixedly connected to the end of the connecting rod away from the sleeve. The side wall of the connecting plate is fixedly connected to the crossbar, and a reinforcing component is installed on the outer wall of the crossbar.

[0008] Preferably, the reinforcing component includes a rectangular block fixed to the outer wall of the crossbar, with telescopic rods fixed to both the upper and lower outer walls of the rectangular block, and the end of the telescopic rod away from the rectangular block fitting against the inner wall of the pipe body, and a tightening bolt threaded onto the telescopic rod.

[0009] Preferably, the sleeves are distributed in a ring at equal intervals with the midpoint of the collar as the center.

[0010] Beneficial effects This utility model provides a ventilation duct with a sound-absorbing structure, which has the following beneficial effects: The perforated plates can be squeezed towards the vertical rod, causing them to move along the stop block via the vertical rod. The stop block, in conjunction with the sleeve, compresses the spring, causing it to elastically deform. This then propels the perforated plates into the pipe body. Releasing the perforated plates allows them to return to their original position, ensuring the outermost damping and sound-insulating felt layer adheres to the inner wall of the pipe body. Because several perforated plates are installed and designed with a narrow arc shape, they fit better against the inner wall of the pipe body. The position of the perforated plates can then be adjusted using handles and crossbars. Loosening the clamping bolts and adjusting the length of the telescopic rod ensures it presses against the inner wall of the pipe body. Tightening the clamping bolts fixes the length of the telescopic rod, further improving the stability of the device after installation. When air passes through the pipe body, it contacts the perforated plates, and the air is then cooled by the ultra-fine glass wool layer and the damping and sound-insulating felt layer, achieving resistive noise reduction. This intervention at the source of noise generation results in a more ideal noise reduction effect. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a cross-sectional view of the present invention.

[0013] Figure 3 This is a partially enlarged schematic diagram of the present invention.

[0014] Figure 4 This is a partially enlarged schematic diagram of the present invention.

[0015] Figure 5 This is a partially enlarged schematic diagram of the present invention.

[0016] In the diagram: 1. Pipe body; 2. Horizontal bar; 3. Handle; 4. Collar; 5. Sleeve; 6. Vertical bar; 7. Perforated plate; 8. Ultra-fine glass wool layer; 9. Damping sound insulation felt layer; 10. Stop block; 11. Spring; 12. Connecting rod; 13. Connecting disc; 14. Rectangular block; 15. Telescopic rod; 16. Tightening bolt. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-5 This utility model provides a technical solution: a ventilation duct with a sound-absorbing structure, including a duct body 1, a crossbar 2 inside the duct body 1, a handle 3 fixedly connected to the side of the crossbar 2 near the opening end of the duct body 1, a sound-absorbing mechanism installed inside the duct body 1, and a connecting mechanism installed on the crossbar 2. The silencing mechanism includes a collar 4 disposed inside the pipe body 1. Several sleeves 5 are fixedly connected to the outer periphery of the collar 4, and a vertical rod 6 is slidably connected to the opening of the sleeve 5. A perforated plate 7 is fixedly connected to the end of the vertical rod 6 away from the sleeve 5, and an ultra-fine glass wool layer 8 is fixedly connected to the outside of the perforated plate 7. A damping sound insulation felt layer 9 is fixedly connected to the outside of the ultra-fine glass wool layer 8. A clamping component is installed inside the sleeve 5. An opening is machined on the sleeve 5 to facilitate the movement of the vertical rod 6 and the perforated plate 7. When air passes through the pipe body 1, the air will come into contact with the perforated plate 7 and then be reduced by the ultra-fine glass wool layer 8 and the damping sound insulation felt layer 9, thereby achieving resistive noise reduction. This allows for intervention at the source of noise generation.

[0019] In this embodiment, the clamping assembly includes a stop block 10 and a spring 11 disposed inside the sleeve 5, and the outer wall of the stop block 10 is slidably connected to the inner wall of the sleeve 5. The stop block 10 is fixedly connected to the vertical rod 6, and the two ends of the spring 11 are respectively connected to the sleeve 5 and the stop block 10. The stop block 10 can be made of damping rubber to limit the rebound of the spring 11. At the same time, the stop block 10, together with the opening of the sleeve 5, can limit the vertical rod 6.

[0020] In this embodiment, the connecting mechanism is further configured such that a plurality of connecting rods 12 are fixedly connected to the outer wall of the sleeve 5 away from the vertical rod 6, and a connecting plate 13 is fixedly connected to the end of the connecting rod 12 away from the sleeve 5. The side wall of the connecting plate 13 is fixedly connected to the horizontal rod 2, and a reinforcing component is installed on the outer wall of the horizontal rod 2.

[0021] In this embodiment, the reinforcement component includes a rectangular block 14 fixed to the outer wall of the crossbar 2. Telescopic rods 15 are fixed to the upper and lower outer walls of the rectangular block 14, and the end of the telescopic rod 15 away from the rectangular block 14 is in contact with the inner wall of the pipe body 1. A tightening bolt 16 is threaded onto the telescopic rod 15. Adjust the position of the perforated plate 7 by adjusting the handle 3 and crossbar 2, then loosen the clamping bolt 16, adjust the length of the telescopic rod 15 so that the telescopic rod 15 is pressed against the inner wall of the pipe body 1, and tighten the clamping bolt 16 to fix the length of the telescopic rod 15. This will further improve the stability of the device after installation.

[0022] In this embodiment, the sleeves 5 are further configured to be distributed in a ring at equal intervals with the midpoint of the collar 4 as the center; The number of sleeves 5 is set to 6, which allows for better noise reduction.

[0023] It is worth noting that all standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The models of electrical structure equipment involved can be selected according to the user's needs, as long as they meet the requirements of this application. In addition, the circuit connection adopts conventional connection methods in the prior art. The control, current detection, position feedback, predicted voltage synchronization, and parameter adjustment of the electrical equipment are all existing technologies and will not be described in detail here. All contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0024] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0025] Example: When this device is needed, the components can be assembled according to the diagram according to the assembly process, ensuring that the bolts are tightened and the welding is firm. Then, the perforated plate 7 can be pressed towards the vertical rod 6, causing the perforated plate 7 to move the stop block 10 through the vertical rod 6. The stop block 10, in conjunction with the sleeve 5, compresses the spring 11, causing the spring 11 to undergo elastic deformation. Afterward, the perforated plate 7 is pushed into the pipe body 1. The perforated plate 7 is then released to return to its original position, and the outermost damping and sound-insulating felt layer 9 is made to fit against the inner wall of the pipe body 1. Since several perforated plates 7 are provided, and the perforated plates 7 are designed in a narrow arc shape, this can better... After the perforated plate 7 is properly fitted to the inner wall of the pipe body 1, the position of the perforated plate 7 is adjusted by the handle 3 and the crossbar 2, and then the tightening bolt 16 is loosened. The length of the telescopic rod 15 is adjusted so that the telescopic rod 15 is pressed against the inner wall of the pipe body 1, and the tightening bolt 16 is tightened to fix the length of the telescopic rod 15. This can further improve the stability of the device after installation. When air passes through the pipe body 1, the air will come into contact with the perforated plate 7, and then the noise will be reduced by the ultra-fine glass wool layer 8 and the damping sound insulation felt layer 9, thus achieving resistive noise reduction. This allows intervention at the source of noise generation, and the actual noise reduction effect is more ideal.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] 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 ventilation duct with a sound-absorbing structure, comprising a duct body (1), characterized in that: The pipe body (1) is provided with a crossbar (2) inside. A handle (3) is fixed to the side of the crossbar (2) near the opening end of the pipe body (1). A noise reduction mechanism is installed inside the pipe body (1). A connecting mechanism is installed on the crossbar (2). The silencing mechanism includes a collar (4) disposed inside the pipe body (1). Several sleeves (5) are fixedly connected to the outer periphery of the collar (4), and a vertical rod (6) is slidably connected to the opening of the sleeve (5). A perforated plate (7) is fixedly connected to one end of the vertical rod (6) away from the sleeve (5), and an ultra-fine glass wool layer (8) is fixedly connected to the outside of the perforated plate (7). A damping sound insulation felt layer (9) is fixedly connected to the outside of the ultra-fine glass wool layer (8). A clamping component is installed inside the sleeve (5).

2. A ventilation duct with a sound-absorbing structure according to claim 1, characterized in that, The clamping assembly includes a stop (10) and a spring (11) disposed inside the sleeve (5), and the outer wall of the stop (10) is slidably connected to the inner wall of the sleeve (5). The stop (10) is fixedly connected to the vertical rod (6), and the two ends of the spring (11) are respectively connected to the sleeve (5) and the stop (10).

3. A ventilation duct with a sound-absorbing structure according to claim 1, characterized in that, The connecting mechanism includes several connecting rods (12) fixed to the outer wall of the sleeve (5) away from the vertical rod (6), and a connecting plate (13) is fixed to the end of the connecting rod (12) away from the sleeve (5). The side wall of the connecting plate (13) is fixed to the horizontal rod (2), and a reinforcing component is installed on the outer wall of the horizontal rod (2).

4. A ventilation duct with a sound-absorbing structure according to claim 3, characterized in that, The reinforcement component includes a rectangular block (14) fixed to the outer wall of the crossbar (2). The upper and lower outer walls of the rectangular block (14) are both fixed with telescopic rods (15), and the end of the telescopic rod (15) away from the rectangular block (14) is attached to the inner wall of the pipe body (1). The telescopic rod (15) is threaded with a tightening bolt (16).

5. A ventilation duct with a sound-absorbing structure according to claim 1, characterized in that, Several of the sleeves (5) are distributed in a ring at equal intervals with the midpoint of the collar (4) as the center.

Images