阅读说明：本技术 用于负氧离子生成的吸音组件制作方法、吸音组件、应用 (Manufacturing method of sound absorption assembly for generating negative oxygen ions, sound absorption assembly and application ) 是由 左洪运 毕亚峰 朱聪聪 于 2021-09-29 设计创作，主要内容包括：本发明公开一种用于负氧离子生成的吸音组件制作方法、吸音组件、应用,该制作方法包括根据目标噪声频率确定目标电气石吸音板；根据目标噪声频率确定目标电气石吸音板与目标墙体之间的目标距离；调节伸缩架以使目标电气石吸音板与目标墙体之间相距目标距离,以实现目标电气石吸音板达到共振而释放负氧离子；其中,目标电气石吸音板中电气石纤维的含量为30-40％；该制作方法在制作电气石吸音板时,针对当前吸音环境中目标噪声频率进行针对性吸音,以实现较佳吸音效果的同时,增大负氧离子的生成量,有效净化空气。(The invention discloses a method for manufacturing a sound-absorbing component for generating negative oxygen ions, the sound-absorbing component and application, wherein the manufacturing method comprises the steps of determining a target tourmaline sound-absorbing board according to target noise frequency; determining a target distance between a target tourmaline acoustic board and a target wall according to the target noise frequency; adjusting the telescopic frame to enable the target tourmaline acoustic board to be away from the target wall by a target distance so as to realize that the target tourmaline acoustic board resonates to release negative oxygen ions; wherein the content of tourmaline fiber in the target tourmaline acoustic board is 30-40%; when the tourmaline acoustic board is manufactured, the targeted sound absorption is performed according to the target noise frequency in the current sound absorption environment, so that the generation amount of negative oxygen ions is increased while a better sound absorption effect is realized, and the air is effectively purified.)

1. The manufacturing method of the sound-absorbing assembly for generating negative oxygen ions is characterized in that the sound-absorbing assembly comprises an expansion bracket and a tourmaline sound-absorbing plate, the expansion bracket is installed on a target wall body, the tourmaline sound-absorbing plate is installed on the expansion bracket, and the distance between the tourmaline sound-absorbing plate and the target wall body is adjustable; the manufacturing method comprises the following steps:

determining a target tourmaline acoustic board according to the target noise frequency;

determining a target distance between the target tourmaline acoustic board and the target wall according to a target noise frequency;

and adjusting the telescopic frame to enable the target tourmaline acoustic board and the target wall to be away from each other by a target distance so as to realize that the target tourmaline acoustic board resonates to release negative oxygen ions.

2. The manufacturing method of claim 1, wherein said determining the target tourmaline sound-absorbing plate according to the target noise frequency comprises:

taking the target noise frequency as a first resonance frequency of the target tourmaline acoustic board;

determining the material of the target tourmaline acoustic board and determining the corresponding Young modulus, density and Poisson ratio;

and determining the geometric dimension of the target tourmaline acoustic board according to the first resonant frequency, the Young modulus, the density and the Poisson ratio.

3. The manufacturing method of claim 1, wherein the determining the target distance between the target tourmaline sound-absorbing plate and the target wall body according to the target noise frequency comprises:

setting the target noise frequency as a second resonant frequency of the sound absorbing assembly;

and determining the target distance between the target tourmaline acoustic board and the target wall according to the second resonance frequency.

4. The manufacturing method of claim 1, wherein the target tourmaline acoustic board comprises the following raw materials by weight percent:

10% -20% of polyester fiber and/or polyamide fiber;

40% -55% of low-melting-point polyester fiber;

30-40% of tourmaline fiber.

5. The sound absorption assembly is used for generating negative oxygen ions and is characterized by comprising an expansion bracket and a target tourmaline sound absorption plate arranged on the expansion bracket;

the telescopic frame is arranged on a target wall body, the target tourmaline acoustic board is arranged on the telescopic frame, and the distance between the target tourmaline acoustic board and the target wall body is adjustable.

6. The sound absorbing assembly of claim 5, wherein the expansion bracket includes a first mounting portion, a second mounting portion, and at least one pair of expansion rods connected between the first mounting portion and the second mounting portion;

the first mounting part is connected with the target wall;

the target tourmaline acoustic board is installed on the second installation part.

7. The sound-absorbing assembly of claim 6, wherein the second mounting portion comprises a hollow closed loop structure fitted to an outer edge of the target tourmaline sound-absorbing panel.

8. The sound absorbing assembly of claim 7, wherein the targeted tourmaline sound absorbing panel is one of a circle, a polygon, any regular or irregular shape.

9. The sound absorbing assembly of claim 7, wherein the second mounting portion defines a locating hole, and further comprising a fastener extending through the locating hole for attaching to the sound absorbing panel.

10. The sound absorbing assembly of claim 9, wherein the positioning hole is opened in an outer circumferential surface of the second mounting portion.

11. The sound absorbing assembly of claim 6, wherein the extension bar includes a first connecting bar, a second connecting bar, and a securing member;

the first connecting rod is connected with the first mounting part, and the second connecting rod is connected with the second mounting part;

the second connecting rod is movably connected with the first connecting rod through the fixing piece and can axially move along the first connecting rod;

the fixing piece vertically penetrates through the first connecting rod and the second connecting rod.

12. The sound absorbing assembly of claim 11, wherein the first connecting rod and/or the second connecting rod is provided with an axially disposed slot, and the fixing member is movably disposed in the slot.

13. The sound-absorbing assembly of claim 11, wherein the first connecting rod is provided with a plurality of first through holes in an axial direction, the second connecting rod is provided with at least one second through hole, and the fixing member is inserted into the second through hole, and is connected with different first through holes therethrough to adjust a distance between the target tourmaline sound-absorbing plate and the target wall;

or the first connecting rod is provided with at least one first through hole, the second connecting rod is provided with a plurality of second through holes along the axial direction, and the fixing piece is arranged in the first through hole in a penetrating manner and is connected with different second through holes through the fixing piece so as to adjust the distance between the target tourmaline acoustic board and the target wall body.

14. Use of the sound absorbing member for negative oxygen ion generation according to any one of claims 5 to 13 or the sound absorbing member for negative oxygen ion generation according to any one of claims 1 to 4 in a sound absorbing device.

Technical Field

The invention relates to the field of building boards, in particular to a manufacturing method of a sound-absorbing component for generating negative oxygen ions, the sound-absorbing component and application.

Background

The sound-absorbing board is an ideal sound-absorbing decorative material. The tourmaline acoustic board has the advantages of sound absorption, environmental protection, flame retardance, heat insulation, heat preservation, moisture resistance, mildew resistance, easy dust removal, easy cutting, mosaic, simple and convenient construction, good stability, good impact resistance, good independence, high cost performance and the like, and is widely applied to sound absorption textile factories in acoustic places such as large theaters, concert halls, movie theaters and the like, and sound absorption wall boards and ceiling tiles of large public buildings.

However, the tourmaline acoustic board is in a dense and closed state for a long time, air quality is poor, and viruses and bacteria are easy to breed on the board surface.

In addition, the existing sound-absorbing board is not good in sound-absorbing effect due to material selection and size solidification. Therefore, how to effectively purify air on the premise of ensuring the sound absorption performance of the sound absorption plate is a problem to be solved urgently in the industry.

Disclosure of Invention

The invention aims to provide a method for manufacturing a sound absorption assembly for generating negative oxygen ions, the sound absorption assembly and application.

In order to achieve the above object, the first aspect of the present invention provides a method for manufacturing a sound-absorbing assembly for generating negative oxygen ions, the sound-absorbing assembly includes a telescopic frame and a tourmaline sound-absorbing plate, the telescopic frame is mounted on a target wall, the tourmaline sound-absorbing plate is mounted on the telescopic frame, and the distance between the tourmaline sound-absorbing plate and the target wall is adjustable; the manufacturing method comprises the following steps:

determining a target tourmaline acoustic board according to the target noise frequency;

determining a target distance between the target tourmaline acoustic board and the target wall according to a target noise frequency;

and adjusting the telescopic frame to enable the target tourmaline acoustic board and the target wall to be away from each other by a target distance so as to realize that the target tourmaline acoustic board resonates to release negative oxygen ions.

In a preferred embodiment, the determination of the target tourmaline sound-absorbing plate according to a target noise frequency includes:

taking the target noise frequency as a first resonance frequency of the target tourmaline acoustic board;

determining the material of the target tourmaline acoustic board and determining the corresponding Young modulus, density and Poisson ratio;

and determining the geometric dimension of the target tourmaline acoustic board according to the first resonant frequency, the Young modulus, the density and the Poisson ratio.

In a preferred embodiment, the determining a target distance between the target tourmaline sound-absorbing plate and the target wall body according to a target noise frequency includes:

setting the target noise frequency as a second resonant frequency of the sound absorbing assembly;

and determining the target distance between the target tourmaline acoustic board and the target wall according to the second resonance frequency.

In a preferred embodiment, the target tourmaline acoustic board comprises the following raw materials in percentage by weight:

10% -20% of polyester fiber and/or polyamide fiber;

40% -55% of low-melting-point polyester fiber;

the invention provides a sound-absorbing assembly for generating negative oxygen ions, which comprises an expansion bracket and a target tourmaline sound-absorbing plate arranged on the expansion bracket;

the telescopic frame is arranged on a target wall body, the target tourmaline acoustic board is arranged on the telescopic frame, and the distance between the target tourmaline acoustic board and the target wall body is adjustable.

In a preferred embodiment, the telescopic frame comprises a first mounting part, a second mounting part and at least one pair of telescopic rods connected between the first mounting part and the second mounting part;

the first mounting part is connected with the target wall;

the target tourmaline acoustic board is installed on the second installation part.

In a preferred embodiment, the second mounting portion comprises a hollow closed loop structure fitted to the outer edge of the target tourmaline sound-absorbing plate.

In a preferred embodiment, the target tourmaline sound-absorbing plate is one of a circle, a polygon, and an arbitrary regular or irregular shape.

In a preferred embodiment, the second mounting portion is provided with a positioning hole, and the sound-absorbing assembly further comprises a fastener penetrating through the positioning hole and connected with the sound-absorbing plate.

In a preferred embodiment, the positioning hole is opened on the outer circumferential surface of the second mounting portion.

In a preferred embodiment, the telescopic rod comprises a first connecting rod, a second connecting rod and a fixing piece;

the first connecting rod is connected with the first mounting part, and the second connecting rod is connected with the second mounting part;

the second connecting rod is movably connected with the first connecting rod through the fixing piece and can axially move along the first connecting rod;

the fixing piece vertically penetrates through the first connecting rod and the second connecting rod.

In a preferred embodiment, the first connecting rod and/or the second connecting rod are provided with a long hole arranged along the axial direction, and the fixing member is movably arranged in the long hole in a penetrating manner.

In a preferred embodiment, the first connecting rod is provided with a plurality of first through holes along the axial direction, the second connecting rod is provided with at least one second through hole, and the fixing piece is arranged in the second through hole in a penetrating way and is connected with different first through holes to adjust the distance between the target tourmaline sound-absorbing board and the target wall body;

or the first connecting rod is provided with at least one first through hole, the second connecting rod is provided with a plurality of second through holes along the axial direction, and the fixing piece is arranged in the first through hole in a penetrating manner and is connected with different second through holes through the fixing piece so as to adjust the distance between the target tourmaline acoustic board and the target wall body.

A third aspect of the present invention provides a sound-absorbing member manufactured by the method for manufacturing a sound-absorbing member for negative oxygen ion generation according to any one of the first aspect or a sound-absorbing member for negative oxygen ion generation according to any one of the second aspect, for use in a sound-absorbing device.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a method for manufacturing a sound-absorbing component for generating negative oxygen ions, the sound-absorbing component and application, wherein the manufacturing method comprises the steps of determining a target tourmaline sound-absorbing plate according to target noise frequency; determining a target distance between a target tourmaline acoustic board and a target wall according to the target noise frequency; adjusting the telescopic frame to enable the target tourmaline acoustic board to be away from the target wall by a target distance so as to realize that the target tourmaline acoustic board resonates to release negative oxygen ions; wherein the content of tourmaline fiber in the target tourmaline acoustic board is 30-40%; when the tourmaline acoustic board is manufactured, the targeted sound absorption is carried out according to the target noise frequency in the current sound absorption environment, so that the generation amount of negative oxygen ions is increased while a better sound absorption effect is realized, and the air is effectively purified;

furthermore, after the sound-absorbing assembly for generating negative oxygen ions is manufactured, the distance between the tourmaline sound-absorbing plate and a target wall body can be adjusted according to the target noise frequency so as to enhance the sound-absorbing effect and improve the release amount of the negative oxygen ions, so that the universality of the sound-absorbing assembly is effectively improved; the sound-absorbing assembly can realize modular installation in a sound-absorbing environment, so that the installation cost is effectively reduced;

of course, the present invention only needs to achieve at least one of the above technical effects.

Drawings

FIG. 1 is a flow chart of a method for manufacturing a sound-absorbing member for negative oxygen ion generation according to the present embodiment;

FIG. 2 is a schematic view showing the structure of a sound-absorbing member for negative oxygen ion generation in the present embodiment;

fig. 3 is a partial schematic structural view of the sound-absorbing member for negative oxygen ion generation according to the present embodiment.

The labels in the figure are: 100-sound-absorbing component, 10-telescopic frame, 11-first mounting part, 12-second mounting part, 13-telescopic rod, 131-first connecting rod, 132-second connecting rod, 133-fixing part, 14-positioning hole and 20-tourmaline sound-absorbing board.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically connected or connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As described in the background art, the sound absorbing effect and the air quality in the sound absorbing environment are not good at present, and for this reason, the present embodiment provides a method for manufacturing a sound absorbing member for negative oxygen ion generation, a sound absorbing member, and applications, which can be custom-designed for the sound absorbing environment.

The following will further specifically describe the manufacturing method, the sound-absorbing assembly and the application of the sound-absorbing assembly for generating negative oxygen ions with reference to the accompanying drawings 1 to 3.

As shown in fig. 1, the present embodiment provides a method for manufacturing a sound-absorbing assembly for generating negative oxygen ions, which is used for manufacturing a sound-absorbing assembly having both sound-absorbing and air-purifying functions in a customized manner.

As shown in fig. 2, the sound-absorbing assembly 100 comprises an expansion bracket 10 and a tourmaline sound-absorbing plate 20, wherein the expansion bracket 10 is mounted on a target wall, the tourmaline sound-absorbing plate 20 is mounted on the expansion bracket 10, and the distance δ L between the tourmaline sound-absorbing plate 20 and the target wall is adjustable. The manufacturing method comprises the following steps:

and S1, determining a target tourmaline acoustic board according to the target noise frequency.

Wherein the target noise frequency is a specific noise frequency band to be absorbed.

The target tourmaline acoustic board is a PET acoustic board taking tourmaline fiber as one of raw materials, and the content of the tourmaline fiber is 30-40%. Tourmaline is a silicate mineral having a cyclic structure of aluminum, sodium, iron, and lithium (polycrystal, monocrystal, fiber) characterized by containing boron, and is generally produced in the form of tourmaline, tourmaline sand, or tourmaline powder. The tourmaline can generate polarization voltage when being heated or pressed, the polarization voltage can ionize oxygen molecules and water molecules in the air to generate negative oxygen ions, and weak current and far infrared rays can be released at the same time.

The negative oxygen ions have the function of refreshing air and are called as air vitamins. The effects when the concentration of the negative oxygen ions is low are as follows: eliminating stimulation of positive charges to human body (such as trachea and bronchus), improving and preventing respiratory diseases, purifying blood, improving respiratory function, relieving tension, improving sleep, regulating endocrine, eliminating free radicals in vivo, reducing blood viscosity, resisting oxidation, resisting aging, promoting metabolism, purifying and removing dust, and reducing harm of second-hand smoke.

Preferably, the target tourmaline acoustic board comprises the following raw materials in percentage by weight: 10% -20% of polyester fiber and/or polyamide fiber; 40% -55% of low-melting-point polyester fiber; 30-40% of tourmaline fiber, wherein the tourmaline fiber is prepared by mixing tourmaline and polyester fiber master batch in a weight ratio of 2-3:40-50 and drawing wires.

The target tourmaline acoustic board is prepared in advance, and the preparation process comprises the processes of mixing, opening, carding, lapping, needling, hot pressing, cold pressing and the like.

Specifically, step S1 includes:

and S11, taking the target noise frequency as the first resonance frequency of the target tourmaline acoustic board.

It should be noted that when sound waves with a certain frequency act on the tourmaline sound absorption plate surface, certain vibration is generated on the plate surface. When sound waves with the same resonance frequency as the tourmaline sound-absorbing plate act on the tourmaline sound-absorbing plate, the tourmaline sound-absorbing plate reaches a resonance state. When the tourmaline acoustic board is in a resonance state, the acoustic effect is best. Because the amplitude of the surface of the tourmaline acoustic board is larger in a resonance state, the particle vibration inside the board is larger, the tourmaline material is pressed to generate polarization voltage, and the polarization voltage ionizes oxygen molecules and water molecules in the air to generate negative oxygen ions. Therefore, the amount of generated negative oxygen ions is maximized in the resonance state.

S12, determining the material of the target tourmaline acoustic board and determining the corresponding Young modulus, density and Poisson ratio.

When the material of the tourmaline acoustic board is determined, the corresponding Young modulus, density and Poisson ratio are all determined values.

And S13, determining the geometric dimension of the target tourmaline acoustic board according to the first resonant frequency, the Young modulus, the density and the Poisson ratio.

When the target tourmaline acoustic board is in one of a round shape, a polygonal shape, an arbitrary regular shape or an irregular shape. Illustratively, when the target tourmaline sound-absorbing plate is circular, the geometric dimensions include the plate thickness and diameter of the tourmaline sound-absorbing plate. The plate thickness and the diameter of the target tourmaline acoustic board are determined according to the following formula (1):

where h is the plate thickness, a is the plate diameter, Emax is the Young's modulus of the plate, ρ is the density of the plate, and σ is the Poisson's ratio of the plate. Mu.s_nFor the root of the cylindrical function, μ can be obtained according to a graphical method₁＝3.2，μ₂＝6.3，μ₃The frequency of vibration from first order to higher order is thus available at 9.44 … …. In general, since the vibration amplitude of the first order vibration is the largest and the frequency is the lowest, n is 1 in formula (1).

For example, the existing tourmaline sound absorption plate parameters are as follows: e is 0.4GPa, rho is 200kg/m³When the first resonance frequency is 639Hz, a geometric dimension of h 9mm and a 100mm is used to make a circular target tourmaline acoustic board, and the first-order symmetric mode resonance frequency is actually measured to be about 630 Hz.

As another example, when the target tourmaline sound-absorbing plate is square, the geometric dimensions include the plate thickness and the side length of the tourmaline sound-absorbing plate. Determining the plate thickness and the side length of the target tourmaline acoustic board according to the following formula (2):

where h is the plate thickness, L is the plate side length, E is the Young's modulus of the plate, ρ is the plate density, and σ is the Poisson's ratio. Mu.s_nTo solve the root value of the equation cosh (x) cos (x) 1, μ can be obtained from a graphical solution₁＝4.73，μ₂＝7.853，μ₃10.995 … …, the frequency of vibration from first order to higher order can be obtained. Similarly, n is 1.

For example, the existing tourmaline sound absorption plate parameters are as follows: e is 0.4GPa, rho is 200kg/m³When the first resonance frequency is 548Hz, the rectangular target tourmaline acoustic board is manufactured by taking h as 9mm and L as 200mm as the geometric dimension, and the first-order symmetric mode resonance frequency is actually measured to be about 550 Hz.

Therefore, the present embodiment designs the geometric dimensions of the target tourmaline sound-absorbing plate to be customized for the target noise frequency band to be absorbed, so as to improve the sound-absorbing and negative oxygen ion releasing effects.

Further, researches show that when the target tourmaline acoustic board is larger, the resonance frequency of the board is lower, and the square reduction trend is shown, for example, the length and the width of the board are doubled, and the resonance frequency is reduced by four times.

And S2, after the target tourmaline sound-absorbing board is determined, determining the target distance between the target tourmaline sound-absorbing board and the target wall according to the target noise frequency. Specifically, step S2 includes:

s21, setting the target noise frequency as the second resonance frequency of the sound absorbing member.

In fact, the second resonance frequency of the above-mentioned acoustic absorption assembly is the resonance frequency at which the air in the cavity between the target tourmaline acoustic absorption plate and the target wall resonates.

And S22, determining the target distance between the target tourmaline acoustic board and the target wall according to the second resonance frequency.

Specifically, the second resonance frequency and the target distance between the target tourmaline acoustic board and the target wall body satisfy the following formula (3):

δL＝c/4f· (3)

where δ L is a target distance between the target tourmaline sound-absorbing plate and the target wall, f is a second resonance frequency, and c is a sound propagation speed in air, typically, c is 343 m/s.

Therefore, the distance delta L is adjusted to enable the air resonance frequency in the cavity between the target tourmaline acoustic board and the target wall to reach the target noise frequency, when the acoustic absorption assembly is positioned in a target noise environment to absorb the target noise, the air in the cavity between the target tourmaline acoustic board and the target wall reaches a resonance state, under the resonance state, the vibration speed of air mass points in the target tourmaline acoustic board is increased, friction in the board is aggravated, the polarization voltage is increased due to the fact that the tourmaline material is pressed to be increased, oxygen molecules and water molecules in the air are ionized by the polarization voltage to generate negative oxygen ions, and therefore the generation quantity of the negative oxygen ions is increased.

Therefore, the present embodiment designs and adjusts the target distance between the target tourmaline sound-absorbing plate and the target wall body in a customized manner for the target noise frequency band to be absorbed, and improves the sound-absorbing and negative oxygen ion releasing effects through the air resonance between the distances.

And S3, adjusting the telescopic frame to enable the target tourmaline sound-absorbing board to be away from the target wall body by a target distance after the steps S1 and S2 so as to enable the target tourmaline sound-absorbing board to achieve resonance and release negative oxygen ions.

Therefore, the method for manufacturing the sound-absorbing assembly for generating negative oxygen ions provided by the embodiment can be used for manufacturing the tourmaline sound-absorbing plate which can specifically absorb target noise and has excellent sound-absorbing effect and negative oxygen ion generation amount according to the target noise frequency band in a customized manner.

In the sound-absorbing assembly 100 for negative oxygen ion generation manufactured under the above manufacturing method, the expansion bracket 10 includes a first mounting portion 11, a second mounting portion 12, and at least one pair of expansion links 13 connected between the first mounting portion 11 and the second mounting portion 12, the first mounting portion 11 is connected to a target wall, the second mounting portion 12 is a free end, and the target tourmaline sound-absorbing plate 20 is mounted on the second mounting portion 12. It should be noted that, in order to improve the structural stability, the first mounting portion 11 and the second mounting portion 12 include multiple sets, such as four sets.

The target tourmaline sound-absorbing plate 20 is one of a circle, a polygon, any regular or irregular shape having a certain thickness, and preferably, for better calculation of the geometric size, the target tourmaline sound-absorbing plate 20 is preferably a circle, a rectangle or a square, but not limited thereto. For convenience of description, the present embodiment is further described by taking the case where the objective tourmaline sound-absorbing plate 20 is square, and the geometric size of the objective tourmaline sound-absorbing plate 20 is, for example, 10cm by 0.5cm or 20cm by 30cm by 0.5 cm.

Further, the second mounting part 12 includes a hollow closed loop structure coupled to an outer edge of the target tourmaline sound-absorbing plate 20, and the second mounting part 12 is disposed in parallel with the target wall. When the target tourmaline sound-absorbing plate 20 is square, the second mount portion 12 is a hollow rectangular frame. The target tourmaline sound-absorbing plate 20 is embedded in the second mounting portion 12, the second mounting portion 12 is provided with a plurality of positioning holes 14, and the positioning holes 14 are opened on the outer peripheral surface of the second mounting portion 12. The sound-absorbing assembly 100 further includes a fastening member (not shown) coupled to the objective tourmaline sound-absorbing plate 20 through the positioning hole 14.

The fixation of the target tourmaline sound-absorbing plate 20 can be realized by the penetration of screws in the positioning holes 14.

The telescopic rod 13 is any structure capable of reciprocating in the same direction, including but not limited to any one of push-pull type, slide rail type, slide groove type, slide rod type, etc. Preferably, the embodiment adopts a sliding rod type structure, that is, the telescopic rod 13 includes a first connecting rod 131, a second connecting rod 132 and a fixing member 133. The first connecting rod 131 is connected to the first mounting portion 11, and the second connecting rod 132 is connected to the second mounting portion 12. The second connecting rod 132 is movably connected to the first connecting rod 131 through a fixing member 133, and the second connecting rod 132 can move axially along the first connecting rod 131. The fixing member 133 vertically penetrates through the first connecting rod 131 and the second connecting rod 132 to fix the positions of the first connecting rod 131 and the second connecting rod 132. Of course, the first connecting rod 131 and the second connecting rod 132 are respectively provided with corresponding slots or holes for the through positioning of the fixing member 133.

For example, the first connecting rod 131 and the second connecting rod 132 are respectively provided with a long hole 134 arranged along the axial direction, and the fixing member 133 is movably inserted into the long hole 134 to fix the first connecting rod 131 and the second connecting rod 132.

Of course, it may also be: the first connecting rod 131 is provided with a plurality of first through holes (not shown) along the axial direction, the second connecting rod 132 is provided with at least one second through hole (not shown), and the fixing member 133 is inserted into the second through hole and connected with different first through holes to adjust the distance between the target tourmaline sound-absorbing plate 20 and the target wall;

or, the first connecting rod 131 is provided with at least one first through hole, the second connecting rod 132 is provided with a plurality of second through holes along the axial direction, and the fixing member 133 is inserted into the first through hole, and is connected with different second through holes through the first through hole to adjust the distance between the target tourmaline sound-absorbing plate 20 and the target wall.

When the sound-absorbing assembly manufactured by the method for manufacturing a sound-absorbing assembly for generating negative oxygen ions is applied to a sound-absorbing device, the sound-absorbing device is a sound-absorbing wall or the like.

When the sound absorption environment is changed, namely the sound of the target noise frequency band is changed, the size of the target tourmaline sound absorption plate and the distance between the target tourmaline sound absorption plate and the target wall body can be adjusted to adapt to the new sound absorption environment and requirements.

In summary, the tourmaline acoustic board manufactured by the method for manufacturing the acoustic absorption assembly for generating negative oxygen ions provided by the embodiment can perform targeted acoustic absorption according to the target noise frequency in the current acoustic absorption environment, so as to realize the customized setting of the acoustic absorption assembly, thereby increasing the generation amount of negative oxygen ions and effectively purifying air while having a better acoustic absorption effect;

furthermore, after the sound-absorbing assembly for generating negative oxygen ions is manufactured, the distance between the tourmaline sound-absorbing plate and a target wall body can be adjusted according to the target noise frequency so as to enhance the sound-absorbing effect and improve the release amount of the negative oxygen ions, so that the universality of the sound-absorbing assembly is effectively improved; and, this inhale the sound subassembly and can realize inhaling the modularization installation in the sound environment, effectively reduce installation cost.

All the above optional technical solutions may be combined arbitrarily to form optional embodiments of the present invention, that is, any multiple embodiments may be combined to meet the requirements of different application scenarios, which are within the protection scope of the present application and are not described herein again.

It should be understood that the above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.