Dynamic silencer with environmental adaptability

Abstract

The utility model relates to the technical field of noise reduction, and discloses an environmental adaptation dynamic silencer which comprises a box body, a plurality of sound inlet holes are formed in one side of the box body, a plurality of sound outlet holes are formed in the other side of the box body, a sound absorbing material is arranged in the box body, the sound absorbing material is in a wave shape, and the sound absorbing material is arranged in the box body. A plurality of sound absorbing holes are evenly distributed in the surface of the sound absorbing material, an upper moving rod and a lower moving rod are inserted into the bent positions of the upper side and the lower side of the sound absorbing material in a penetrating mode respectively, an upper connecting plate and a lower connecting plate are arranged on the rear side of the box body, and a plurality of sliding holes are formed in the rear side of the box body. The rear ends of all the upper moving rods penetrate through the sliding holes and are fixedly connected to the front side of the upper connecting plate, and the rear ends of all the lower moving rods penetrate through the sliding holes and are fixedly connected to the front side of the lower connecting plate. According to the utility model, the bending degree of the sound absorbing material is adjusted to adapt to the frequency of noise in the environment in real time, so as to achieve the best silencing effect and improve the adaptability of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction, in particular to an environmentally adaptable dynamic silencing device. Background Art

[0002] In daily life, some comprehensive commercial buildings often need to be equipped with large cooling units, air conditioning equipment, range hoods and other necessary auxiliary facilities and equipment. If the noise generated by them, especially the low-frequency sound, is not effectively eliminated, it may even cause vibration propagation throughout the building, causing serious nuisance to residents or users. Noise has a great impact on human health. The role of silencers is to reduce noise. With the improvement of living standards, the requirements for noise reduction in various occasions are gradually increasing, and the use of silencers is becoming more and more common.

[0003] However, the real environment often has variable noise audio. According to the principles of physics, the wavelength of sound waves is inversely proportional to the frequency. The higher the frequency, the shorter the wavelength and the stronger the penetrating ability. Sound waves can pass through pores larger than the wavelength and will also be absorbed by the sound-absorbing material. Therefore, the penetration of noise of different frequencies is different. However, it is difficult to adjust the general silencer according to the on-site environment, which greatly reduces the silencer effect and has limitations in use. Utility Model Content

[0004] In order to remedy the above deficiencies, the utility model provides an environmentally adaptable dynamic silencing device, which aims to improve the problem in the prior art that adaptive adjustments cannot be made according to the on-site noise environment, resulting in poor silencing effect.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an environmentally adaptable dynamic silencing device, comprising a box body, a plurality of sound inlet holes are arranged on one side of the box body, a plurality of sound outlet holes are arranged on the other side, a sound-absorbing material is arranged inside the box body, the sound-absorbing material is wavy, a plurality of sound-absorbing holes are evenly distributed on the surface of the sound-absorbing material, an upper moving rod and a lower moving rod are respectively inserted at the upper and lower bending parts of the sound-absorbing material, an upper connecting plate and a lower connecting plate are arranged on the rear side of the box body, a plurality of sliding holes are arranged on the rear side of the box body, the rear ends of all the upper moving rods pass through the sliding holes and are fixedly connected to the front side of the upper connecting plate, the rear ends of all the lower moving rods pass through the sliding holes and are fixedly connected to the front side of the lower connecting plate, a side cover is installed on the other side of the box body, a noise decibel sensor module is installed inside the side cover, a controller is installed on the top of the side cover, a double-headed motor is installed in the middle of the rear side of the box body, and the driving ends on both sides of the double-headed motor are respectively fixedly connected to the upper connecting plate and the lower connecting plate.

[0006] As a further description of the above technical solution:

[0007] The two sides of the sound absorbing material are respectively fixedly connected to the inner two sides of the box body.

[0008] As a further description of the above technical solution:

[0009] The sound absorbing material is lined with nylon elastic bands.

[0010] As a further description of the above technical solution:

[0011] The upper moving rod and the lower moving rod are slidably connected inside the even sliding holes.

[0012] As a further description of the above technical solution:

[0013] A top cover is arranged on the top of the box body.

[0014] As a further description of the above technical solution:

[0015] The side cover and the box body are detachable.

[0016] As a further description of the above technical solution:

[0017] The controller is electrically connected to the noise decibel sensor module and the double-head motor.

[0018] The utility model has the following beneficial effects:

[0019] In the utility model, under the control of the controller, a double-headed motor is used to adjust the distance between the upper moving rod and the lower moving rod, so as to adjust the surface area of ​​the sound-absorbing material and the inner diameter of the sound-absorbing hole. At the same time, the noise decibel sensor module inside the side cover monitors the noise decibel in real time and transmits the data to the controller in real time for comparison. When it is at the minimum decibel, the double-headed motor stops working. At this time, the device is in the best silencing state, thereby improving the adaptability of silencing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of an environmentally adaptable dynamic silencing device proposed by the utility model;

[0021] Figure 2 A schematic diagram of a sound-absorbing material for an environmentally adaptable dynamic silencing device proposed by the utility model;

[0022] Figure 3 This is a schematic diagram of an upper moving rod and a lower moving rod of an environmentally adaptable dynamic silencing device proposed by the utility model being connected to sound-absorbing materials respectively;

[0023] Figure 4 This is a schematic diagram of a double-head motor of an environmentally adaptable dynamic silencing device proposed by the utility model.

[0024] Legend:

[0025] 1. Box body; 2. Sound inlet hole; 3. Sound outlet hole; 4. Sound-absorbing material; 5. Sound-absorbing hole; 6. Upper moving rod; 7. Lower moving rod; 8. Upper connecting plate; 9. Lower connecting plate; 10. Double-head motor; 11. Side cover; 12. Controller; 13. Top cover; 14. Sliding hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-4The utility model provides an embodiment: an environmentally adaptive dynamic silencing device, comprising a box body 1, a plurality of sound inlet holes 2 are arranged on one side of the box body 1, a plurality of sound outlet holes 3 are arranged on the other side, a sound absorbing material 4 is arranged inside the box body 1, the sound absorbing material 4 is wavy, the sound absorbing material 4 has elasticity, a plurality of sound absorbing holes 5 are evenly distributed on the surface of the sound absorbing material 4, an upper moving rod 6 and a lower moving rod 7 are respectively inserted at the upper and lower bending parts of the sound absorbing material 4, an upper connecting plate 8 and a lower connecting plate 9 are arranged on the rear side of the box body 1, and the rear side of the box body 1 A plurality of sliding holes 14 are provided, the rear ends of all upper moving rods 6 pass through the sliding holes 14 and are fixedly connected to the front side of the upper connecting plate 8, the rear ends of all lower moving rods 7 pass through the sliding holes 14 and are fixedly connected to the front side of the lower connecting plate 9, a side cover 11 is installed on the other side of the box body 1, a noise decibel sensor module is installed inside the side cover 11, a controller 12 is installed on the top of the side cover 11, a double-headed motor 10 is installed in the middle of the rear side of the box body 1, and the driving ends on both sides of the double-headed motor 10 are fixedly connected to the upper connecting plate 8 and the lower connecting plate 9 respectively, The sound hole 2 is aligned with the direction of the sound source and the box 1 is installed. Under the control of the controller 12, the noise decibel sensor module inside the side cover 11 monitors the noise decibel in real time. The driving ends on both sides of the double-headed motor 10 are extended and retracted, driving the upper connecting plate 8 and the lower connecting plate 9 to move closer or farther from each other, and then driving the upper moving rod 6 and the lower moving rod 7 to move accordingly. Since the upper moving rod 6 and the lower moving rod 7 are inserted in the bending part of the sound-absorbing material 4, the surface area of ​​the sound-absorbing material 4 that bears the sound waves is adjusted accordingly. The larger the surface area, the better the attraction effect. At the same time, the inner diameter of the sound-absorbing hole 5 on the surface of the sound-absorbing material 4 will also increase or decrease accordingly. According to the principles of physics, the wavelength of the sound wave is inversely proportional to the frequency. The higher the frequency, the shorter the wavelength, the stronger the penetration ability, and the sound wave can pass through the pores larger than the wavelength. Therefore, by adjusting the bending degree of the sound-absorbing material 4, it is in the best silencing state. At this time, the noise decibel sensor module transmits the best state data to the controller 12, and the controller 12 controls the double-headed motor 10 to stop working. At this time, the device is in the best silencing state, thereby improving the adaptability to the environment.

[0028] The two sides of the sound-absorbing material 4 are respectively fixedly connected to the two sides inside the box body 1, and the sound-absorbing material 4 is more stable. The sound-absorbing material 4 is lined with nylon elastic bands, which makes the sound-absorbing material 4 not easy to break and improves the service life. The upper moving rod 6 and the lower moving rod 7 are evenly connected inside the sliding hole 14, and the upper moving rod 6 and the lower moving rod 7 increase the connectivity with the box body 1, and the whole is more stable. A top cover 13 is provided on the top of the box body 1, which is convenient for opening and inspecting the interior. The side cover 11 and the box body 1 are detachable, which is convenient for maintenance of the internal parts of the side cover 11. The controller 12 is electrically connected to the noise decibel sensor module and the double-headed motor 10, and coordinated control is performed through the controller 12, and the noise decibel sensor module is used to monitor the on-site silencing effect in real time.

[0029] Working principle: install the box 1 with the sound inlet 2 aligned with the sound source. Under the control of the controller 12, the noise decibel sensor module inside the side cover 11 monitors the noise decibel in real time. The driving ends on both sides of the double-headed motor 10 extend and retract, driving the upper connecting plate 8 and the lower connecting plate 9 to move closer or farther from each other, and then driving the upper moving rod 6 and the lower moving rod 7 to move accordingly. Since the upper moving rod 6 and the lower moving rod 7 are inserted in the bending part of the sound-absorbing material 4, the surface area of ​​the sound-absorbing material 4 that is subjected to the sound waves is adjusted accordingly. The larger the surface area, the greater the attraction effect. Good, at the same time, the inner diameter of the sound-absorbing holes 5 on the surface of the sound-absorbing material 4 will also increase or decrease. According to the principles of physics, the wavelength of a sound wave is inversely proportional to the frequency. The higher the frequency, the shorter the wavelength and the stronger the penetrating ability. The sound wave can pass through pores larger than the wavelength. Therefore, by adjusting the bending degree of the sound-absorbing material 4, it is placed in the best silencing state. At this time, the noise decibel sensor module transmits the best state data to the controller 12, and the controller 12 controls the double-headed motor 10 to stop working. At this time, the device is in the best silencing state, thereby improving its adaptability to the environment.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An environmentally adaptable dynamic silencing device, comprising a housing (1), characterized in that: A plurality of sound inlet holes (2) are arranged on one side of the box body (1), and a plurality of sound outlet holes (3) are arranged on the other side. A sound absorbing material (4) is arranged inside the box body (1). The sound absorbing material (4) is wavy, and a plurality of sound absorbing holes (5) are evenly distributed on the surface of the sound absorbing material (4). An upper moving rod (6) and a lower moving rod (7) are respectively inserted into the upper and lower bending parts of the sound absorbing material (4). An upper connecting plate (8) and a lower connecting plate (9) are arranged on the rear side of the box body (1). A plurality of sliding holes (14) are arranged on the rear side of the box body (1). All the upper moving rods (6) are provided with a plurality of sliding holes (14). The rear ends all pass through the sliding holes (14) and are fixedly connected to the front side of the upper connecting plate (8); the rear ends of all the lower moving rods (7) pass through the sliding holes (14) and are fixedly connected to the front side of the lower connecting plate (9); a side cover (11) is installed on the other side of the box body (1); a noise decibel sensor module is installed inside the side cover (11); a controller (12) is installed on the top of the side cover (11); a double-headed motor (10) is installed in the middle of the rear side of the box body (1); the driving ends on both sides of the double-headed motor (10) are fixedly connected to the upper connecting plate (8) and the lower connecting plate (9) respectively.

2. The environmentally adaptable dynamic silencing device according to claim 1, characterized in that: The two sides of the sound absorbing material (4) are respectively fixedly connected to the two sides inside the box body (1).

3. The environmentally adaptable dynamic silencing device according to claim 1, characterized in that: The sound absorbing material (4) is lined with nylon elastic bands.

4. The environmentally adaptable dynamic silencing device according to claim 1, characterized in that: The upper moving rod (6) and the lower moving rod (7) are slidably connected inside the uniform sliding hole (14).

5. The environmentally adaptable dynamic silencing device according to claim 1, characterized in that: A top cover (13) is provided on the top of the box body (1).

6. The environmentally adaptable dynamic silencing device according to claim 1, characterized in that: The side cover (11) and the box body (1) are detachable.

7. The environmentally adaptable dynamic silencing device according to claim 1, characterized in that: The controller (12) is electrically connected to the noise decibel sensor module and the double-headed motor (10).

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