Noise reduction device

Abstract

The noise reduction device comprises a machine box with an opening in one side, a plurality of first noise reduction barrels which are close to the opening and arranged from top to bottom are arranged in the machine box, the first noise reduction barrels are horizontally arranged, first through holes are formed in the first noise reduction barrels, first sound absorption material blocks are arranged in the first noise reduction barrels, and second through holes are formed in the second noise reduction barrels. And a first driving mechanism used for controlling the first silencing barrels to rotate is arranged on one side of the case. The noise reduction device has the advantage that the noise reduction effect is improved.

Description

Technical Field

[0001] This application relates to the field of noise reduction equipment technology, and in particular to a noise reduction device. Background Technology

[0002] Industrial noise reduction equipment is mainly used to reduce noise generated in industrial production activities such as factories and mines, in order to improve the working environment and protect workers' hearing health. This equipment includes sound-absorbing materials, soundproof enclosures, and silencers, and has the advantages of improving the quality of the working environment, protecting hearing health, and meeting regulatory requirements.

[0003] Existing noise reduction equipment can reduce noise through sound-absorbing blades with through holes. However, during use, the sound-absorbing blades are fixed. When noise enters the equipment and comes into contact with the sound-absorbing blades, some of the sound waves will be reflected out of the noise reduction equipment after multiple refractions. However, since the sound-absorbing blades are fixed, the sound wave refraction is relatively regular, so the number of refractions is small. The sound waves do not come into sufficient contact with the sound-absorbing material inside the sound-absorbing blades before being reflected out, so the overall noise reduction effect is poor. Utility Model Content

[0004] The main purpose of this application is to provide a noise reduction device that aims to solve the technical problem of poor noise reduction effect of existing noise reduction equipment.

[0005] To achieve the above objectives, this application provides a noise reduction device, including a chassis with an opening on one side, a plurality of first silencers arranged from top to bottom near the opening inside the chassis, the plurality of first silencers being arranged horizontally, a first through hole being provided on each of the plurality of first silencers, a first sound-absorbing material block being provided inside each of the plurality of first silencers, and a first drive mechanism for controlling the rotation of the plurality of first silencers being provided on one side of the chassis.

[0006] Optionally, the first silencer cylinder is provided with a plurality of raised ribs arranged interlaced with the first through hole, the first sound-absorbing material block is spherical, and the diameter of the first sound-absorbing material block is greater than the spacing between the raised ribs.

[0007] Optionally, the first drive mechanism includes a plurality of first connecting gears connected to one side of the corresponding first muffler via corresponding rotating shafts, the other side of the first muffler being movably connected to the inner wall of the chassis via corresponding rotating shafts, a first transmission gear meshing between adjacent upper and lower first connecting gears, and a first motor connected to the first transmission gear or any of the first connecting gears.

[0008] Optionally, a first receiving cavity is provided on one side of the chassis, the first connecting gear and the first transmission gear are both located inside the first receiving cavity, and the first motor is located on the outer wall of the chassis.

[0009] Optionally, a plurality of second silencers are arranged from left to right on the side of the chassis away from the opening. The plurality of second silencers are arranged vertically, and each of the plurality of second silencers has a second through hole. Each of the plurality of second silencers is provided with a second sound-absorbing material block. A second drive mechanism for controlling the rotation of the plurality of second silencers is provided on the top of the chassis.

[0010] Optionally, the second silencer is provided with multiple vertically arranged connecting ropes inside, and multiple second sound-absorbing material blocks are fixedly sleeved on the connecting ropes along the height direction of the connecting ropes.

[0011] Optionally, both the first sound-absorbing material block and the second sound-absorbing material block have a porous structure.

[0012] Optionally, the second drive mechanism includes multiple second connecting gears connected to the top of the second muffler via corresponding rotating shafts, the bottom of the second muffler being movably connected to the bottom of the housing via corresponding rotating shafts, and the left and right adjacent second connecting gears being meshed with second transmission gears, and the second transmission gears or any of the second connecting gears being connected to a second motor.

[0013] Optionally, a second receiving cavity is provided at the top of the chassis, and the second connecting gear and the second transmission gear are both located in the second receiving cavity, while the second motor is located at the top of the chassis.

[0014] Optionally, a cover is hinged to the side of the chassis away from the opening, and the cover is close to the second silencer.

[0015] The beneficial effects that this application can achieve are as follows:

[0016] When this application is in use, noise enters the interior of the chassis through the opening. At this time, the noise enters the first silencer through the first through hole. As the first silencer rotates continuously under the action of the first drive mechanism, the first sound-absorbing material block inside the first silencer also moves irregularly, increasing the number of refractions of the noise wave inside the first silencer. This can improve the absorption rate of the noise wave by the first sound-absorbing material block, thereby greatly improving the noise reduction effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the structure of a noise reduction device according to an embodiment of this application;

[0019] Figure 2This is a schematic diagram of the internal structure of a noise reduction device according to an embodiment of this application;

[0020] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along the AA direction.

[0021] Figure label:

[0022] 110 - Chassis, 120 - First silencer, 121 - First through hole, 130 - First sound-absorbing material block, 140 - First drive mechanism, 141 - First connecting gear, 142 - First transmission gear, 143 - First motor, 150 - Rib, 160 - First receiving cavity, 170 - Second silencer, 171 - Second through hole, 180 - Second sound-absorbing material block, 190 - Second drive mechanism, 191 - Second connecting gear, 192 - Second transmission gear, 193 - Second motor, 210 - Connecting rope, 220 - Second receiving cavity, 230 - Cover plate.

[0023] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0028] Example

[0029] Reference Figures 1-3 This embodiment provides a noise reduction device, including a housing 110 with an opening on one side. A plurality of first silencers 120 arranged from top to bottom near the opening are disposed inside the housing 110. The plurality of first silencers 120 are all horizontally arranged. A first through hole 121 is provided on each of the plurality of first silencers 120. A first sound-absorbing material block 130 is disposed inside each of the plurality of first silencers 120. A first drive mechanism 140 for controlling the rotation of the plurality of first silencers 120 is disposed on one side of the housing 110.

[0030] In this embodiment, during use, noise enters the interior of the chassis 110 through the opening. At this time, the noise enters the first silencer 120 through the first through hole 121. As the first silencer 120 rotates continuously under the action of the first drive mechanism 140, the first sound-absorbing material block 130 inside the first silencer 120 also moves irregularly, increasing the number of refractions of the noise wave inside the first silencer 120. This can improve the absorption rate of the noise wave by the first sound-absorbing material block 130, thereby greatly improving the noise reduction effect.

[0031] It should be noted that a layer of sound-absorbing material can be installed on the inner wall of the chassis 110 to further reduce the noise waves irregularly refracted from the first silencer 120.

[0032] As an optional implementation, the first silencer 120 is provided with a plurality of raised ribs 150 arranged alternately with the first through hole 121, the first sound-absorbing material block 130 is spherical, and the diameter of the first sound-absorbing material block 130 is greater than the spacing between the raised ribs 150.

[0033] In this embodiment, the ribs 150 can improve the irregular refraction of noise waves within the first silencer 120, thereby increasing the number of refractions. At the same time, the ribs 150 also serve to isolate the spherical first sound-absorbing material blocks 130, preventing multiple first sound-absorbing material blocks 130 from blocking the first through hole 121, thus ensuring the noise absorption of the first silencer 120. Furthermore, the diameter of the first sound-absorbing material blocks 130 is larger than the spacing between the ribs 150, which can prevent the first sound-absorbing material blocks 130 from getting stuck between the ribs 150.

[0034] As an optional implementation, the first drive mechanism 140 includes a plurality of first connecting gears 141 connected to one side of the corresponding first muffler 120 via corresponding rotating shafts. The other side of the first muffler 120 is movably connected to the inner wall of the housing 110 via corresponding rotating shafts. A first transmission gear 142 is meshed between adjacent first connecting gears 141. The first transmission gear 142 or any of the first connecting gears 141 is connected to a first motor 143.

[0035] In this embodiment, when the first motor 143 starts, it can drive the first transmission gear 142 and all the first connecting gears 141 to rotate, thereby driving all the first mufflers 120 to rotate, realizing automated operation. It should be noted that the first transmission gear 142 can be movably connected to the side wall of the housing 110 through a corresponding rotating shaft.

[0036] As an optional implementation, a first receiving cavity 160 is provided on one side of the chassis 110. The first connecting gear 141 and the first transmission gear 142 are both located inside the first receiving cavity 160, and the first motor 143 is located on the outer wall of the chassis 110, thereby playing a protective role and preventing personnel from accidentally touching the first connecting gear 141 and the first transmission gear 142 to ensure safety.

[0037] As an optional implementation, a plurality of second silencers 170 arranged from left to right are provided on the side of the housing 110 away from the opening. The plurality of second silencers 170 are all arranged vertically, and each of the plurality of second silencers 170 has a second through hole 171. Each of the plurality of second silencers 170 has a second sound-absorbing material block 180. A second drive mechanism 190 for controlling the rotation of the plurality of second silencers 170 is provided on the top of the housing 110.

[0038] In this embodiment, after the residual noise wave in the first silencer 120 comes out, it can continue to enter the second silencer 170 for further noise reduction. At this time, the rotation direction of the second silencer 170 is perpendicular to the rotation direction of the first silencer 120, which can improve the irregular refraction of the noise wave. At the same time, the noise wave entering the second silencer 170 also forms irregular refraction and is fully absorbed by the second sound-absorbing material block 180, which can basically absorb the residual noise wave and further improve the noise reduction effect.

[0039] As an optional implementation, the second silencer 170 is provided with multiple vertically arranged connecting ropes 210 inside, and multiple second sound-absorbing material blocks 180 are fixedly sleeved on the connecting ropes 210 along the height direction of the connecting ropes 210.

[0040] In this embodiment, multiple second sound-absorbing material blocks 180 can be suspended in the air by connecting rope 210, thereby increasing the contact rate with noise sound waves that have been refracted multiple times, so as to improve the sound absorption effect.

[0041] As an optional implementation, both the first sound-absorbing material block 130 and the second sound-absorbing material block 180 have a porous structure, which can further improve the sound absorption effect.

[0042] As an optional implementation, the second drive mechanism 190 includes a plurality of second connecting gears 191 connected to the top of the second muffler 170 via corresponding rotating shafts. The bottom of the second muffler 170 is movably connected to the bottom of the housing 110 via corresponding rotating shafts. The left and right adjacent second connecting gears 191 are meshed with second transmission gears 192. The second transmission gear 192 or any of the second connecting gears 191 is connected to a second motor 193.

[0043] In this embodiment, when the second motor 193 starts, it drives the second transmission gear 192 and all the second connecting gears 191 to rotate, thereby driving all the second mufflers 170 to rotate, enabling automated operation. It should be noted that the second transmission gear 192 can be movably connected to the top of the housing 110 via a corresponding rotating shaft.

[0044] As an optional implementation, a second receiving cavity 220 is provided at the top of the chassis 110. The second connecting gear 191 and the second transmission gear 192 are both located in the second receiving cavity 220, and the second motor 193 is located at the top of the chassis 110. Here, the second receiving cavity 220 also serves a protective function to prevent personnel from accidentally touching the second connecting gear 191 and the second transmission gear 192, thereby ensuring safety.

[0045] As an alternative implementation, the chassis 110 has a cover plate 230 hinged (which may be a damped hinge) on the side away from the opening, and the cover plate 230 is close to the second silencer 170.

[0046] In this embodiment, when ventilation is required, the cover plate 230 is opened, so that openings are formed on both sides of the chassis 110, allowing the noise-reduced air to pass through the other side of the chassis 110. When ventilation is not required, the cover plate 230 is closed, and the chassis 110 only has a noise reduction function. It is flexible and versatile, and can meet more usage scenarios.

[0047] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A noise reduction device, characterized in that, The device includes a chassis with an opening on one side. Inside the chassis, there are multiple first silencers arranged from top to bottom near the opening. The multiple first silencers are all horizontally arranged. Each of the multiple first silencers has a first through hole. Each of the multiple first silencers contains a first sound-absorbing material block. A first drive mechanism for controlling the rotation of the multiple first silencers is provided on one side of the chassis.

2. The noise reduction device as described in claim 1, characterized in that, The first silencer has multiple raised ribs arranged interlaced with the first through hole. The first sound-absorbing material block is spherical, and the diameter of the first sound-absorbing material block is larger than the spacing between the raised ribs.

3. The noise reduction device as described in claim 2, characterized in that, The first drive mechanism includes multiple first connecting gears connected to one side of the corresponding first muffler via corresponding rotating shafts. The other side of the first muffler is movably connected to the inner wall of the chassis via corresponding rotating shafts. A first transmission gear is meshed between adjacent first connecting gears. A first motor is connected to the first transmission gear or any of the first connecting gears.

4. The noise reduction device as described in claim 3, characterized in that, A first receiving cavity is provided on one side of the chassis, and the first connecting gear and the first transmission gear are both located inside the first receiving cavity. The first motor is located on the outer wall of the chassis.

5. A noise reduction device as described in any one of claims 1-4, characterized in that, Inside the chassis, on the side furthest from the opening, there are multiple second silencers arranged from left to right. All the second silencers are arranged vertically, each with a second through hole, and each containing a second sound-absorbing material block. The top of the chassis is equipped with a second drive mechanism for controlling the rotation of the multiple second silencers.

6. The noise reduction device as described in claim 5, characterized in that, The second silencer has multiple vertically arranged connecting ropes inside, and multiple second sound-absorbing material blocks are fixedly sleeved on the connecting ropes along the height direction of the connecting ropes.

7. The noise reduction device as described in claim 6, characterized in that, Both the first and second sound-absorbing material blocks have porous structures.

8. The noise reduction device as described in claim 5, characterized in that, The second drive mechanism includes multiple second connecting gears connected to the top of the second muffler via corresponding rotating shafts. The bottom of the second muffler is movably connected to the bottom of the housing via corresponding rotating shafts. Adjacent second connecting gears on the left and right are meshed with second transmission gears. The second transmission gear or any of the second connecting gears is connected to a second motor.

9. The noise reduction device as described in claim 8, characterized in that, A second receiving cavity is provided at the top of the chassis, and the second connecting gear and the second transmission gear are both located in the second receiving cavity. The second motor is located at the top of the chassis.

10. A noise reduction device as described in claim 5, characterized in that, A cover is hinged to the side of the chassis away from the opening, and the cover is close to the second muffler.

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