Noise-reducing ventilating duct

Abstract

The utility model relates to the technical field of noise reduction ventilation pipelines, and discloses a noise reduction ventilation pipeline which comprises a device body, the device body comprises a first air pipe body and a second air pipe body, the first air pipe body is provided with a first air inlet and a first air outlet, and the second air pipe body is provided with a second air outlet. The second air pipe body is provided with a second air inlet and a second air outlet, the inner wall of the first air pipe body and the inner wall of the second air pipe body are both coated with sound absorption cotton, and the top end and the bottom end, close to the inner wall face of the second air outlet, of the second air pipe body are both fixedly provided with arc-shaped backflow plates. The sound-absorbing cotton can effectively absorb and reduce noise generated when airflow flows in the pipeline. When the air flows in the pipeline, friction and collision are generated between the air and the wall surface of the pipeline, so that noise is generated. The sound-absorbing cotton can absorb the sound waves and reduce the propagation of noise, and the arc-shaped backflow plate is used for improving the flowing state of airflow and reducing the formation of vortex and turbulent flow, so that the generation of noise is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction ventilation ducts, and more specifically to a noise reduction ventilation duct. Background Art

[0002] Ventilation ducts are systems of pipes used for the circulation and distribution of air.

[0003] At present, traditional ventilation ducts on the market will generate certain noise during operation. In particular, when transporting air, the airflow rubs and collides with the duct wall, which not only causes these noises to be directly transmitted to the indoor or surrounding environment, causing interference to people's life, work and rest, but also causes them to operate in a noisy environment for a long time and be affected by the vibration and impact of the noise, resulting in equipment damage or shortening of service life. Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a noise-reducing ventilation duct is provided, in order to achieve a more practical purpose. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a noise reduction ventilation duct to solve the problems existing in the above background technology.

[0005] The utility model provides the following technical solution: a noise reduction ventilation duct, including a device body, the device body including a first air duct body and a second air duct body, the first air duct body having a first air inlet and a first air outlet, the second air duct body having a second air inlet and a second air outlet, the inner walls of the first air duct body and the second air duct body are both covered with sound-absorbing cotton, the top and bottom ends of the second air duct body near the inner wall of the second air outlet are fixedly installed with arc-shaped backflow plates, in actual use, through the arrangement of the above structure, the sound-absorbing cotton can effectively absorb and reduce the noise generated when the airflow flows inside the pipe. When the air flows in the pipe, it will produce friction and collision with the wall of the pipe, thereby generating noise. The sound-absorbing cotton can absorb these sound waves and reduce the propagation of noise, and the arc-shaped backflow plate is used to improve the flow state of the airflow, reduce the formation of vortices and turbulence, and further reduce the generation of noise.

[0006] Furthermore, the ends of the outer walls of the first air duct body and the second air duct body are fixedly installed with assembly plates, and the assembly plates are evenly provided with installation holes, and bolt bodies are installed inside the installation holes. The inner walls of the bolt bodies are provided with slots, and inserts are inserted and installed inside the slots. In actual use, through the setting of the above-mentioned structure, slots are provided on the inner walls of the bolt bodies, and inserts are inserted and installed inside the slots. Through the cooperation of the inserts and the slots, the risk of slipping can be avoided during long-term use.

[0007] Furthermore, an insertion portion is provided on one side of the first air duct body close to the first air outlet, and a docking portion matching the insertion portion is provided on the second air duct body close to the second air inlet. In actual use, the above-mentioned structure can increase the connection firmness.

[0008] Furthermore, a sealing step is provided at the connection between the first air duct body and the second air duct body, and multiple sealing rubber rings are provided in the sealing step. In actual use, through the setting of the above-mentioned structure, the design of the sealing step enables the connection of the air duct bodies to form a step-by-step tightening structure, which helps to reduce gas leakage at the connection. When the two air duct bodies are connected by an assembly plate, the sealing steps will fit together to form a tight connection interface.

[0009] Furthermore, sound insulation panels are provided on the outer walls of the first air duct body and the second air duct body. In actual use, the above-mentioned structure can significantly reduce the noise level of the entire air duct system and improve the comfort of the use environment.

[0010] Furthermore, a supporting frame is provided on the outside of the first air duct body and the second air duct body, and two shock-absorbing columns are provided on the supporting frame, and the top ends of the shock-absorbing columns are connected to the bottom ends of the first air duct body and the second air duct body, and the shock-absorbing columns are composed of springs and dampers. In actual use, through the setting of the above structure, the shock-absorbing columns realize their shock-absorbing function through the combination of springs and dampers. When the air duct body is subjected to external vibration, the spring will deform, thereby absorbing part of the vibration energy. At the same time, the damper will play a role in converting the remaining vibration energy into heat energy or other forms of energy, thereby reducing the transmission and diffusion of vibration. This design can ensure the stable operation of the air duct body and reduce the impact of noise and vibration on the surrounding environment and equipment.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model is provided with sound-absorbing cotton and an arc-shaped backflow plate. In actual use, the sound-absorbing cotton can effectively absorb and reduce the noise generated when the airflow flows inside the pipe through the above-mentioned structure. When the air flows in the pipe, it will produce friction and collision with the pipe wall, thereby generating noise. The sound-absorbing cotton can absorb these sound waves and reduce the propagation of noise. The arc-shaped backflow plate is used to improve the flow state of the airflow, reduce the formation of vortices and turbulence, and further reduce the generation of noise.

[0013] 2. The utility model is provided with a supporting frame and a shock-absorbing column. In actual use, through the setting of the above-mentioned structure, the shock-absorbing column realizes its shock-absorbing function through the combination of springs and dampers. When the air duct body is subjected to external vibration, the spring will deform to absorb part of the vibration energy. At the same time, the damper will play a role in converting the remaining vibration energy into heat energy or other forms of energy, thereby reducing the transmission and diffusion of vibration. This design can ensure the stable operation of the air duct body and reduce the impact of noise and vibration on the surrounding environment and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic three-dimensional diagram of the first structure of the utility model.

[0015] Figure 2 It is a schematic three-dimensional diagram of the second structure of the utility model.

[0016] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the second air duct body structure of the utility model.

[0017] Figure 4 It is a three-dimensional schematic diagram of the bolt body structure of the utility model.

[0018] In the figure: 100, device body; 110, first air duct body; 111, second air duct body; 112, first air inlet; 113, first air outlet; 114, second air inlet; 115, second air outlet; 116, sound-absorbing cotton; 117, arc-shaped backflow plate; 118, assembly plate; 119, mounting hole; 120, bolt body; 121, slot; 122, insert; 123, insertion part; 124, docking part; 125, support frame; 126, shock-absorbing column. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0020] Embodiment 1: The utility model provides a noise reduction ventilation duct, including a device body 100, the device body 100 includes a first air duct body 110 and a second air duct body 111, the first air duct body 110 has a first air inlet 112 and a first air outlet 113, the second air duct body 111 has a second air inlet 114 and a second air outlet 115, the inner walls of the first air duct body 110 and the second air duct body 111 are both covered with sound-absorbing cotton 116, and the top and bottom ends of the inner wall of the second air duct body 111 near the second air outlet 115 are fixedly installed with arc-shaped backflow plates 117.

[0021] Embodiment 2:

[0022] The difference between the second embodiment and the first embodiment is that the ends of the outer walls of the first air duct body 110 and the second air duct body 111 are fixedly installed with an assembly plate 118, and the assembly plate 118 is evenly provided with mounting holes 119, and the insides of the mounting holes 119 are installed with bolt bodies 120, and the inner walls of the bolt bodies 120 are provided with slots 121, and the insides of the slots 121 are inserted and installed with inserts 122, and the first air duct body 110 is provided with an insertion portion 123 on one side close to the first air outlet 113, and the second air duct body 111 is provided with a screw thread 123 on the side close to the second air inlet 114. A matching docking portion 124, a sealing step is provided at the connection between the first air duct body 110 and the second air duct body 111, and multiple sealing rubber rings are provided in the sealing step. Sound insulation panels are provided on the outer walls of the first air duct body 110 and the second air duct body 111, and support frames 125 are provided on the outside of the first air duct body 110 and the second air duct body 111. Two shock-absorbing columns 126 are provided on the support frames 125, and the top ends of the shock-absorbing columns 126 are connected to the bottom ends of the first air duct body 110 and the second air duct body 111, and the shock-absorbing columns 126 are composed of springs and dampers.

[0023] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0024] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0025] Finally: The above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A noise reduction ventilation duct, comprising a device body (100), wherein the device body (100) comprises a first air duct body (110) and a second air duct body (111), wherein the first air duct body (110) has a first air inlet (112) and a first air outlet (113), and the second air duct body (111) has a second air inlet (114) and a second air outlet (115), wherein: The inner walls of the first air duct body (110) and the second air duct body (111) are both covered with sound-absorbing cotton (116), and arc-shaped backflow plates (117) are fixedly installed at the top and bottom ends of the inner wall of the second air duct body (111) near the second air outlet (115).

2. A noise reduction ventilation duct according to claim 1, characterized in that: The ends of the outer walls of the first air duct body (110) and the second air duct body (111) are fixedly installed with an assembly plate (118), and the assembly plate (118) is evenly provided with installation holes (119), and the insides of the installation holes (119) are installed with bolt bodies (120), and the inner walls of the bolt bodies (120) are provided with slots (121), and the insides of the slots (121) are inserted with inserts (122).

3. The noise reduction ventilation duct according to claim 1, characterized in that: An insertion portion (123) is provided on one side of the first air duct body (110) close to the first air outlet (113), and a docking portion (124) matching with the insertion portion (123) is provided on the second air duct body (111) close to the second air inlet (114).

4. The noise reduction ventilation duct according to claim 1, characterized in that: A sealing step is provided at the connection point between the first air duct body (110) and the second air duct body (111), and multiple sealing rubber rings are provided inside the sealing step.

5. The noise reduction ventilation duct according to claim 1, characterized in that: Sound insulation panels are provided on the outer walls of the first air duct body (110) and the second air duct body (111).

6. The noise reduction ventilation duct according to claim 1, characterized in that: A support frame (125) is disposed outside the first air duct body (110) and the second air duct body (111), and two shock-absorbing columns (126) are disposed on the support frame (125). The top ends of the shock-absorbing columns (126) are connected to the bottom ends of the first air duct body (110) and the second air duct body (111), and the shock-absorbing columns (126) are composed of springs and dampers.

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