Novel assembly type noise reduction air pipe

Abstract

The utility model relates to the technical field of noise reduction air pipes, and discloses a novel assembly type noise reduction air pipe which comprises an L-shaped pipe, a U-shaped groove is formed in the outer wall of the L-shaped pipe, fixing plates are fixedly connected to the top ends of the inner sides of the U-shaped groove, clamping blocks are fixedly connected to the left side and the right side of the top of each fixing plate, a second connecting pipe is clamped to the inner side of the U-shaped groove, and the second connecting pipe is fixedly connected to the left side and the right side of the top of each fixing plate. Buckles are fixedly connected to the tops of the rear sides of the second connecting pipes, the outer walls of the buckles are clamped to the inner sides of the clamping blocks, rotary knobs are rotationally connected to the positions, close to the edges, of the tops of the L-shaped pipes, and pressing plates are fixedly connected to the bottoms of the rotary knobs. According to the device, the second connecting pipe is taken up and clamped into the inner side of the U-shaped groove formed in the L-shaped pipe, and when the second connecting pipe moves to the bottom of the U-shaped groove, it can be effectively guaranteed that time and labor are saved in the silencing air pipe dismounting and mounting process, tedious operation is avoided, and the silencing air pipe dismounting and mounting efficiency and speed are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sound-absorbing air ducts, in particular to a novel assembled sound-absorbing air duct. Background Technique

[0002] An assembled sound-absorbing air duct, namely a formaldehyde-free assembled antibacterial sound-absorbing air duct, is a product that has received much attention in the HVAC industry in recent years. The formaldehyde-free assembled antibacterial sound-absorbing air duct is a high-quality, environmentally friendly, and low-noise air duct product. It adopts an assembled construction method, that is, some or all components are prefabricated in the factory and then transported to the construction site for assembly. This construction method not only improves the construction efficiency but also greatly reduces the requirements for fitters, meeting the needs of decoration standardization and energy conservation and environmental protection.

[0003] In an office building, a quiet office environment needs to be maintained. The novel assembled sound-absorbing air duct can effectively reduce the noise generated by the ventilation device and provide a comfortable working environment for office workers. In an open office area, the noise of the ventilation device may affect the work efficiency and mood of employees. Using a sound-absorbing air duct can reduce noise interference and improve work efficiency.

[0004] Using a sound-absorbing air duct can ensure a quiet production environment and improve product quality. However, during the installation process of the current assembled sound-absorbing air duct, due to the inability to quickly disassemble and assemble, construction workers need to spend a lot of time on traditional connection and fixing operations, which not only increases the construction time but also increases the labor cost. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a novel assembled sound-absorbing air duct, aiming to improve the problem in the prior art that due to the inability to quickly disassemble and assemble, construction workers need to spend a lot of time on traditional connection and fixing operations, which not only increases the construction time but also increases the labor cost.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A novel assembled sound-absorbing air duct, including an L-shaped pipe, the outer wall of the L-shaped pipe is provided with a U-shaped groove, the inner top ends of the U-shaped groove are fixedly connected with fixing plates, the left and right sides of the top of the fixing plates are fixedly connected with clamping blocks, the inner side of the U-shaped groove is engaged with a second connecting pipe, the top rear sides of the second connecting pipe are fixedly connected with buckles, the outer wall of the buckles is engaged with the inner side of the clamping blocks, the edges of the top of the L-shaped pipe are rotatably connected with knobs, the bottom of the knobs is fixedly connected with pressing plates, the inner side of the top of the pressing plates is threadedly connected with a first bolt, the bottom of the first bolt is threadedly connected with the top surface of the second connecting pipe, and a sound-absorbing mechanism is arranged inside the second connecting pipe, and the sound-absorbing mechanism is used for noise reduction of the air duct.

[0007] As a further description of the above technical solution:

[0008] The sound insulation mechanism includes sound-absorbing cotton, the outer wall of the sound-absorbing cotton is fixedly connected to the inner side of the second connecting pipe, a sound-absorbing felt is fixedly connected to the inner side of the sound-absorbing cotton, a sound-absorbing board is fixedly connected to the inner side of the sound-absorbing felt, a foam ceramic is fixedly connected to the inner side of the sound-absorbing board, a polyurethane foam is fixedly connected to the inner side of the foam ceramic, a sound insulation layer is fixedly connected to the inner side of the polyurethane foam, and sound insulation boards are fixedly connected to the inner sides of the sound insulation layers.

[0009] As a further description of the above technical solution:

[0010] A first connecting pipe is clamped at the left rear end of the L-shaped pipe, and a sealing strip is fixedly connected to the front side near the edge of the second connecting pipe.

[0011] As a further description of the above technical solution:

[0012] Mouth-shaped strips are fixedly connected to the outer wall rear sides of the second connecting pipe, and first protective strips are fixedly connected to the top front sides of the L-shaped pipe.

[0013] As a further description of the above technical solution:

[0014] An anti-collision plate is fixedly connected to the middle of the top surface of the L-shaped pipe, and a second protective strip is fixedly connected to the left side of the top of the L-shaped pipe.

[0015] As a further description of the above technical solution:

[0016] An installation bracket is arranged on the left side of the outer wall of the L-shaped pipe, and bolts two are threadedly connected to the front and rear sides of the top of the installation bracket.

[0017] As a further description of the above technical solution:

[0018] Protection plates are fixedly connected to the outer wall rear sides of the L-shaped pipe, and anti-slip strips are fixedly connected to the inner bottom of the installation bracket.

[0019] As a further description of the above technical solution:

[0020] A friction plate is fixedly connected to the bottom of the pressing plate, and the bottom of the friction plate is attached to the left and right sides of the top of the second connecting pipe.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present utility model, the second connecting pipe is picked up and snapped into the inner side of the U-shaped groove formed on the L-shaped pipe. When the second connecting pipe moves to the bottom of the U-shaped groove, it is simultaneously snapped together with the buckle and the block fixedly connected to the fixing plate, and the friction plate is fitted to be in contact with the bottom surface of the second connecting pipe. Therefore, it can effectively ensure time and labor saving during the disassembly and assembly of the sound-absorbing air duct, avoid cumbersome operations, and improve the disassembly and assembly efficiency and speed of the sound-absorbing air duct.

[0023] 2. In the present utility model, the inner side of the sound-absorbing cotton is fixed to the sound-absorbing felt and the sound-absorbing board, so as to effectively reduce noise. Then, the polyurethane foam and the foam ceramics are cooperated with each other, and finally, the sound insulation layer and the sound insulation board are used to reduce the noise of the sound-absorbing air duct. Therefore, it can more effectively reduce the noise generated by the air flow in the air duct, avoid the noise from affecting the normal use of the air duct by the operator, and thus improve the use efficiency of the sound-absorbing air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Isometric view of the L-shaped pipe of a new type of assembled sound-absorbing air duct proposed by the present utility model;

[0025] Figure 2 Exploded view of the sound-absorbing cotton structure of a new type of assembled sound-absorbing air duct proposed by the present utility model;

[0026] Figure 3 Exploded view of the second connecting pipe of a new type of assembled sound-absorbing air duct proposed by the present utility model;

[0027] Figure 4 Schematic exploded view of the L-shaped pipe of a new type of assembled sound-absorbing air duct proposed by the present utility model;

[0028] Figure 5 Schematic view of the L-shaped pipe of a new type of assembled sound-absorbing air duct proposed by the present utility model.

[0029] LEGEND DESCRIPTION:

[0030] 1. L-shaped pipe; 2. Sound-absorbing mechanism; 201. Sound-absorbing cotton; 202. Foam ceramics; 203. Sound-absorbing board; 204. Sound-absorbing felt; 205. Polyurethane foam; 206. Sound insulation layer; 207. Sound insulation board; 3. First connecting pipe; 4. Installation bracket; 5. Second connecting pipe; 6. Mouth-shaped strip; 7. First protective strip; 8. Anti-collision plate; 9. Second protective strip; 10. Sealing strip; 11. Fixing plate; 12. Friction plate; 13. Knob; 14. Pressing plate; 15. First bolt; 16. Buckle; 17. Block; 18. Second bolt; 19. Anti-slip strip; 20. Protection plate; 21. U-shaped groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to the attached Figure 1 , the attached Figure 3 and the attached Figure 4 , an embodiment provided by the present invention: a new type of assembled sound-absorbing air duct, including an L-shaped pipe 1. A U-shaped groove 21 is opened on the outer wall of the L-shaped pipe 1. Fixed connection plates 11 are fixedly connected to the inner top ends of the U-shaped groove 21. On the inner top ends of the U-shaped groove 21, the fixed connection plates 11 are firmly placed. These fixed connection plates 11 are like stable locks. Their surfaces are carefully processed. On the left and right sides of the top of the fixed connection plate 11, clamping blocks 17 are fixedly connected. A second connecting pipe 5 is clamped inside the U-shaped groove 21. On the top rear sides of the second connecting pipe 5, buckles 16 are fixedly connected. The second connecting pipe 5 is inserted therein at its precise angle and position, achieving seamless docking. On the top rear sides of the second connecting pipe 5, buckles 16 that have been carefully processed are provided. The outer wall of the buckle 16 is engaged with the inner side of the clamping block 17. Rotary knobs 13 are rotatably connected to the top of the L-shaped pipe 1 near the edge. A pressing plate 14 is fixedly connected to the bottom of the rotary knob 13. A first bolt 15 is threadedly connected to the inner side of the top of the pressing plate 14 towards the inside, thereby realizing the fastening and adjustment of the second connecting pipe 5. The bottom of the first bolt 15 is tightly connected to the top surface of the second connecting pipe 5 in a threaded manner. This connection method is not only stable and reliable but also easy to repair and replace. The bottom of the first bolt 15 is threadedly connected to the top surface of the second connecting pipe 5. A sound-absorbing mechanism 2 is arranged inside the second connecting pipe 5. The sound-absorbing mechanism 2 is used to reduce the noise of the air duct. A first connecting pipe 3 is clamped at the rear end of the left side of the L-shaped pipe 1. A sealing strip 10 is fixedly connected to the front side of the second connecting pipe 5 near the edge;

[0033] Specifically, through the inner top ends of the U-shaped groove 21, the fixed connection plates 11 are firmly welded. These fixed connection plates 11 are like solid cornerstones, providing reliable support for subsequent assembly. On the left and right sides of the top of the fixed connection plate 11, clamping blocks 17 are respectively precisely fixed. These clamping blocks 17 have regular shapes and precise dimensions, ensuring a tight fit with the connecting components, enabling the second connecting pipe 5 to be firmly inserted and fixed on the L-shaped pipe 1. On the top rear sides of the second connecting pipe 5, buckles 16 are skillfully installed. These buckles 16 are exquisitely designed, and their outer walls perfectly fit with the inner sides of the clamping blocks 17, achieving rapid and stable connection. Driving the pressing plate 14 and the first bolt 15 to move up and down, thereby realizing the fastening and loosening of the second connecting pipe 5. The bottom of the first bolt 15 is threadedly connected to the top surface of the second connecting pipe 5. This connection method is not only firm and reliable but also convenient for disassembly and maintenance.

[0034] Please refer to the attached Figure 2 and the attached Figure 5 , the sound insulation mechanism 2 includes a sound-absorbing cotton 201. The outer wall of the sound-absorbing cotton 201 is fixedly connected to the inner side of the second connecting pipe 5. The inner side of the sound-absorbing cotton 201 is fixedly connected to a sound-absorbing felt 204. The inner side of the sound-absorbing felt 204 is fixedly connected to a sound-absorbing board 203, further strengthening the overall sound-absorbing barrier. On the inner side of this layer of felt, the sound-absorbing board 203 with a composite design is closely connected. The inner side of the sound-absorbing board 203 is fixedly connected to a foam ceramic 202. The inner side of the foam ceramic 202 is fixedly connected to a polyurethane foam 205, which also ensures the structural stability. And deep inside the foam ceramic 202, the inner side of the polyurethane foam 205 is fixedly connected to a sound insulation layer 206. The inner sides of the sound insulation layers 206 are all fixedly connected to sound insulation boards 207. The inner side of the polyurethane foam 205 is closely attached to the sound insulation layer 206. This is a barrier woven from high-efficiency sound insulation materials, which can effectively block the intrusion of external noise. On the rear sides of the outer walls of the second connecting pipes 5, mouth-shaped strips 6 are fixedly connected. On the front sides of the tops of the L-shaped pipes 1, first protective strips 7 are fixedly connected;

[0035] Specifically, the high-quality sound-absorbing cotton 201 is cleverly placed inside the structure. Its soft and dense fiber structure effectively absorbs and converts sound wave energy through efficient air damping, thereby reducing the propagation of noise. It is closely attached to the high-density sound-absorbing felt 204. This felt layer further enhances the overall sound-absorbing effect with its excellent acoustic performance and durability. The inner layer of the sound-absorbing felt 204 is firmly connected to the multi-layer composite sound-absorbing board 203. And on the inner side of the sound insulation layer 206, sound insulation boards 207 are evenly fixedly connected. These sound insulation boards 207 have excellent sound insulation performance and structural strength.

[0036] Please refer to the attached Figure 1 、attached Figure 3 and the attached Figure 5 , a collision-proof plate 8 is fixedly connected to the middle of the top surface of the L-shaped pipe 1. A second protective strip 9 is fixedly connected to the left side of the top of the L-shaped pipe 1. On the rear sides of the outer walls of the L-shaped pipes 1, protection plates 20 are fixedly connected. An anti-slip strip 19 is fixedly connected to the inner bottom of the mounting frame 4. The mounting frame 4 stands firmly on the left side of the L-shaped pipe 1. The anti-slip strip 19 embedded in its inner bottom ensures the stability and safety during the installation process. The mounting frame 4 is arranged on the left side of the outer wall of the L-shaped pipe 1. Bolts 2 are threadedly connected to the front and rear sides of the top of the mounting frame 4. A friction plate 12 is fixedly connected to the bottom of the pressing plate 14, ensuring that sufficient friction can be generated during the pressing process, thus guaranteeing the accuracy and stability of the pressing. The bottom of the friction plate 12 is in contact with the left and right sides of the top of the second connecting pipe 5;

[0037] Specifically, in the center of the smooth and flawless top surface of the L-shaped pipe 1, a sturdy and durable anti-collision plate 8 is carefully designed and fixedly connected. This anti-collision plate 8 not only has a flat appearance, but also has a thick and powerful anti-slip strip 19 fixedly installed on it. It can effectively increase the friction between the mounting bracket 4 and the contact surface, preventing sliding or displacement during the installation process. This friction plate 12 is made of special materials and can generate sufficient friction when under pressure.

[0038] Working principle: Before using the sound-absorbing air duct, first pick up the second connecting pipe 5 and snap it into the inner side of the U-shaped groove 21 opened on the L-shaped pipe 1. When the second connecting pipe 5 moves to the bottom of the U-shaped groove 21, cooperate with the buckle 16 and the block 17 fixedly connected to the fixing plate 11 to engage with each other simultaneously, so as to ensure that the sound-absorbing air duct does not shake during installation. Then twist the knob 13 to rotate the pressing plate 14 out along the inner side of the pressing plate 14, and cooperate with the friction plate 12 to fit with the bottom surface of the second connecting pipe 5. Subsequently, thread the bolt 1 on the pressing plate 14 into the top of the second connecting pipe 5. Therefore, it is possible to effectively ensure time-saving and labor-saving during the disassembly and assembly of the sound-absorbing air duct, avoid cumbersome operations, and improve the disassembly and assembly efficiency and speed of the sound-absorbing air duct.

[0039] Subsequently, a sound-absorbing cotton 201 is fixedly connected to the inner side of the second connecting pipe 5, and the inner side of the sound-absorbing cotton 201 is fixed to the sound-absorbing felt 204 and the sound-absorbing board 203, so as to effectively absorb sound. Then, cooperate with the polyurethane foam 205 and the foam ceramics 202 to cooperate with each other to further enhance the sound-absorbing effect of the sound-absorbing air duct. Finally, cooperate with the sound-insulating layer 206 and the sound-insulating board 207 to reduce the noise of the sound-absorbing air duct. Therefore, it is possible to more effectively reduce the noise generated by the air flow in the air duct, avoid the noise from affecting the normal use of the air duct by the operator, and thus improve the use efficiency of the sound-absorbing air duct.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel assembled sound-absorbing air duct, including an L-shaped pipe (1), characterized in that: The outer wall of the L-shaped pipe (1) is provided with a U-shaped groove (21). Fixedly connected to the inner top ends of the U-shaped grooves (21) are fixing plates (11). Fixedly connected to the left and right sides of the top of the fixing plates (11) are clamping blocks (17). The inner side of the U-shaped groove (21) is engaged with a second connecting pipe (5). Fixedly connected to the rear top sides of the second connecting pipes (5) are buckles (16). The outer wall of the buckles (16) is engaged with the inner side of the clamping blocks (17). Rotationally connected to the top of the L-shaped pipe (1) near the edge are knobs (13). Fixedly connected to the bottom of the knobs (13) is a pressing plate (14). Threadedly connected to the inward side of the top of the pressing plate (14) is a first bolt (15). The bottom of the first bolt (15) is threadedly connected to the top surface of the second connecting pipe (5). A sound absorption mechanism (2) is arranged inside the second connecting pipe (5). The sound absorption mechanism (2) is used for reducing the noise of the air duct.

2. A novel prefabricated sound-absorbing air duct according to claim 1, characterized in that: The sound absorption mechanism (2) includes a sound absorption cotton (201). The outer wall of the sound absorption cotton (201) is fixedly connected to the inner side of the second connecting pipe (5). Fixedly connected to the inner side of the sound absorption cotton (201) is a sound absorption felt (204). Fixedly connected to the inner side of the sound absorption felt (204) is a sound absorption board (203). Fixedly connected to the inner side of the sound absorption board (203) is a foam ceramic (202). Fixedly connected to the inner side of the foam ceramic (202) is a polyurethane foam (205). Fixedly connected to the inner side of the polyurethane foam (205) is a sound insulation layer (206). Fixedly connected to the inner sides of the sound insulation layer (206) are sound insulation boards (207).

3. A novel assembled silencing air duct according to claim 1, characterized in that: A first connecting pipe (3) is engaged with the rear left side of the L-shaped pipe (1). Fixedly connected to the front side near the edge of the second connecting pipe (5) is a sealing strip (10).

4. A novel prefabricated sound-absorbing air duct according to claim 1, characterized in that: Fixedly connected to the rear sides of the outer walls of the second connecting pipes (5) are mouth-shaped strips (6). Fixedly connected to the front sides of the tops of the L-shaped pipes (1) are first protective strips (7).

5. A novel prefabricated sound-absorbing air duct according to claim 1, characterized in that: Fixedly connected to the middle of the top surface of the L-shaped pipe (1) is a collision prevention plate (8). Fixedly connected to the left side of the top of the L-shaped pipe (1) is a second protective strip (9).

6. The novel assembled sound-absorbing air duct according to claim 1, characterized in that: An installation bracket (4) is arranged on the left side of the outer wall of the L-shaped pipe (1). Threadedly connected to the front and rear sides of the top of the installation bracket (4) are second bolts (18).

7. A novel prefabricated sound-absorbing air duct according to claim 6, characterized in that: Fixedly connected to the rear sides of the outer walls of the L-shaped pipes (1) are protection plates (20). Fixedly connected to the inner bottom of the installation bracket (4) is an anti-slip strip (19).

8. A novel prefabricated sound-insulating air duct according to claim 1, characterized in that: Fixedly connected to the bottom of the pressing plate (14) is a friction plate (12). The bottom of the friction plate (12) is attached to the left and right sides of the top of the second connecting pipe (5).

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