Noise Measurement Shielding Box

Abstract

This utility model discloses a noise measurement shielding box, including a shielding box body. The shielding box body includes an outer shell panel and a perforated protective panel. The perforated protective panel is disposed inside the outer shell panel. An inner lining is provided between the outer shell panel and the perforated protective panel. Sound-absorbing material is provided on the perforated protective panel. This utility model noise measurement shielding box has the characteristics of convenient operation, good shielding effect, beautiful appearance, safety and applicability, and low overall cost.

Description

Technical Field

[0001] This utility model relates to the field of noise measurement technology, and more specifically, to a noise measurement shielding box. Background Technology

[0002] A noise measurement shielded box (also known as a soundproof box or silencer box) is used to isolate external non-controlled noise sources and environmental noise interference. It can accurately determine the noise reduction effect of the controlled object before and after construction. It can be used for testing in industrial equipment, computer room equipment and relatively complex noise groups to ensure the accuracy and referenceability of measurement data.

[0003] In practical industrial production applications, there are multiple noise sources in the industrial noise environment, and these multiple noise sources cannot meet the requirements of individual start-up and shutdown due to process production needs. In such cases, the use of a noise measurement shielding box can effectively meet the measurement environment requirements, that is, it is possible to measure effective and reliable noise data without shutting down other untreated noise source equipment. In environments with many noise sources, normal testing cannot effectively evaluate the treatment effect of a particular noise source.

[0004] Chinese utility model patent with publication number CN219105755U discloses a noise environment shielding box that relies solely on sound-absorbing cotton for sound insulation and absorption. However, it has limited blocking effect on high-intensity, high-frequency external noise, making it difficult to ensure the accuracy of measurements in complex noise environments, and it is also inconvenient to install noise measuring instruments. Utility Model Content

[0005] In view of the problems existing in the prior art, this utility model provides a noise measurement shielding box to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a noise measurement shielding box, comprising a shielding box body, the shielding box body comprising a box shell panel and a perforated protective panel, the perforated protective panel being disposed inside the box shell panel, an inner lining being provided between the box shell panel and the perforated protective panel, and sound-absorbing material being provided on the perforated protective panel.

[0007] The present invention is further configured such that the outer shell panel of the box is made of high-density metal plate.

[0008] The present invention is further configured such that the lining and the sound-absorbing material are made of sound-absorbing cotton.

[0009] The present invention is further configured such that the sound-absorbing material is arranged in a wave-like shape inside the shielding box body to improve the noise reflection effect.

[0010] The present invention is further provided with manual handles on both sides of the outer shell plate of the box, which facilitates manual extraction of the shielding box body.

[0011] The present invention is further provided with a portable sound level meter base at the bottom inner side of the shielding box body, which facilitates the installation of the sound level meter.

[0012] Compared with the prior art, the present invention provides a noise measurement shielding box, which has the following beneficial effects: 1. The noise measurement shielding box of this utility model has the characteristics of convenient operation, good shielding effect, beautiful appearance, safety and applicability, and low overall cost. After multiple comprehensive tests and positive feedback from users on-site implementation, this utility model device has great promotion and practical value. Its widespread application will generate good economic and social benefits.

[0013] 2. This utility model can solve the problem of detecting and evaluating one or more noise sources without affecting the production process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the noise measurement shielding box in this utility model; Figure 2 This is a cross-sectional structural diagram of the noise measurement shielding box in this utility model.

[0015] In the diagram: 1. Shielding box body; 2. Box outer shell panel; 3. Perforated protective panel; 4. Inner lining; 5. Sound-absorbing material; 6. Manual handle; 7. Portable sound level meter base. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0018] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0019] Please see Figures 1-2The noise measurement shielding box includes a shielding box body 1, which includes an outer shell panel 2 and a perforated protective panel 3. The perforated protective panel 3 is located inside the outer shell panel 2. An inner lining 4 is provided between the outer shell panel 2 and the perforated protective panel 3. Sound-absorbing material 5 is provided on the perforated protective panel 3. The outer shell panel 2 is made of high-density metal plate, and the inner lining 4 and the sound-absorbing material 5 are made of sound-absorbing cotton. The sound-absorbing material 5 is arranged in a wave-like pattern inside the shielding box body 1. Manual handles 6 are provided on both sides of the outer shell panel 2, and a portable sound level meter base 7 is provided at the bottom inside the shielding box body 1.

[0020] In this embodiment, the outer shell panel 2 of the noise measurement shielding box body 1 is first cut into sheet metal according to the design drawings. After bending and forming, the internal keel is spot welded to form the outer shell of the box. Manual handles 6 are welded to both sides of the box. After grinding and cleaning, it is sent to the powder coating process for surface treatment. Finally, the inner lining 4 is laid and the perforated protective panel 3 is installed and connected by rivets. The portable sound level meter base 7 is made of a plate of a certain thickness, bent and formed, and then powder coated. Finally, a certain thickness of corrugated sound-absorbing cotton is pasted inside the shielding box body 1. The entire implementation process of the shielding box body 1 adopts sheet metal and profile welding technology. After the overall debugging is completed, it is disassembled for partial grinding and painting.

[0021] Weighted sound insulation of the wall panel of the noise shielding box: Rw≥30dB(A); The shielding effect of the noise measurement shielding box is: Rl≥15dB(A), the test result is greater than 10dB(A), which meets the shielding effect required to prevent the influence of background noise that is close (within 10 dB).

[0022] In summary, the overall equipment is used or operated as follows: First, the outer shell panel 2 of the noise measurement shielding box body 1 is sheet metal unfolded and cut according to the design drawings. After bending and forming, the internal keel is spot welded to form the outer shell of the box. Manual handles 6 are welded to both sides of the box. After grinding and cleaning, it is sent to the powder coating process for surface treatment. Finally, the inner lining 4 is laid and the perforated protective panel 3 is installed and connected by rivets. The portable sound level meter base 7 is made of a plate of a certain thickness, bent and formed, and then powder coated. Finally, a certain thickness of corrugated sound-absorbing cotton is pasted inside the shielding box body 1. The entire implementation process of the shielding box body 1 adopts sheet metal and profile welding technology. After the overall debugging is completed, it is disassembled for partial grinding and painting.

[0023] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0024] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. Noise measuring shielded box, comprising a shielded box body (1), characterized in that: The shielding box body (1) includes a box shell plate (2) and a perforated protective plate (3). The perforated protective plate (3) is disposed inside the box shell plate (2). An inner lining (4) is provided between the box shell plate (2) and the perforated protective plate (3). Sound-absorbing material (5) is provided on the perforated protective plate (3).

2. The noise measurement shielding box according to claim 1, characterized in that: The outer shell panel (2) of the box is made of high-density metal plate.

3. The noise measurement shielding box according to claim 1, characterized in that: The lining (4) and the sound-absorbing material (5) are made of sound-absorbing cotton.

4. The noise measurement shielding box according to claim 1, characterized in that: The sound-absorbing material (5) is arranged in a wave-like shape inside the shielding box body (1).

5. The noise measurement shielding box according to claim 1, characterized in that: Manual handles (6) are provided on both sides of the outer shell panel (2) of the box.

6. The noise measurement shielding box according to claim 1, characterized in that: The bottom inner side of the shielding box body (1) is provided with a portable sound level meter base (7).

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