Noise reduction device

Abstract

The utility model discloses a noise reduction device, and particularly relates to the technical field of noise reduction, which comprises an air pipe body, clamping components are arranged on both sides of the air pipe body, a connecting frame is detachably arranged in the air pipe body, four connecting blocks are arranged on the inner wall of the connecting frame, and acoustic panels are detachably arranged on four sides of the inner wall of the connecting frame. Sliding rails are arranged on one sides of the four sound absorption plates, second magnetic attraction blocks are fixedly arranged on one sides of the sliding rails, the second magnetic attraction blocks can be magnetically attracted to one ends of the connecting blocks, and a plurality of convex balls are arranged on the other sides of the four sound absorption plates. According to the utility model, the acoustic board is detachably arranged on the surface of the connecting frame, so that only a single damaged acoustic board needs to be replaced in the maintenance process, the maintenance cost can be effectively reduced, the installation is convenient, and the operation is simple.

Description

Technical Field

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

[0002] In current life, glass fiber composite air duct is a new type of air duct developed to apply new technologies and new materials. It is based on ultra-fine fiberboard and is composited through special processing. It integrates multiple functions such as heat preservation, sound insulation, moisture-proof and fire-proof, anti-corrosion, beautiful outer layer with high strength, inner surface mildew and antibacterial, etc. It has the advantages of light weight, small air leakage, fast production and installation, small space occupation, good ventilation, and reasonable performance and price. However, traditional glass fiber composite air duct will generate large noise during smoke and exhaust due to the air source, which is easy to affect people's life and environment, so noise reduction device is needed.

[0003] The utility model patent with patent application publication number CN202320561820.2 discloses a noise reduction device, including a duct body, a connecting frame is slidably connected to the inside of the duct body, a fixed frame is symmetrically fixedly connected to the outside of the duct body, a second slide groove is provided inside the fixed frame, a slider is slidably connected to the inside of the second slide groove, a card block is fixedly connected to the outside of the slider, a card slot used in conjunction with the card block is provided inside the connecting frame, and a sound-absorbing pipe is fixedly connected to the inside of the connecting frame. The beneficial effect achieved by the utility model is that the card block can be driven to move out of the inside of the card slot by the slider, and the connecting frame is pulled to drive the sound-absorbing pipe to move, which is convenient for disassembly and installation of the sound-absorbing pipe when the duct body is used for a long time, thereby improving the practicality of the device.

[0004] However, in actual use, since the sound absorbing pipe of the structure is fixedly arranged on the surface of the connection frame, when a small part of the sound absorbing pipe is damaged after long-term use, it needs to be removed and replaced as a whole, which easily increases the maintenance cost. Utility Model Content

[0005] In order to overcome the above defects of the prior art, the utility model provides a noise reduction device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a noise reduction device, comprising an air duct body, both sides of the air duct body are provided with snap-on components, a connecting frame is detachably provided inside the air duct body, four connecting blocks are provided on the inner wall of the connecting frame, sound-absorbing panels are detachably provided on all four sides of the inner wall of the connecting frame, a slide rail is provided on one side of the four sound-absorbing panels, a second magnetic block is fixedly provided on one side of the slide rail, the second magnetic block can be magnetically attracted to one end of the connecting block, and a plurality of convex balls are provided on the other side of the four sound-absorbing panels. The above-mentioned technical solution is adopted so that the sound-absorbing panels can be disassembled individually and installed conveniently, so that only a single sound-absorbing panel needs to be replaced when repairing the connecting frame.

[0007] Preferably, the clamping assembly includes a fixed cylinder fixedly arranged on the surface of the air duct body, two limit pins are penetrated inside the fixed cylinder, the two limit pins are movably connected with the fixed cylinder, a handle is provided on one side of the fixed cylinder, the handle is fixedly arranged on the top of the limit pin, a movable plate is fixedly arranged on the outside of the two limit pins, the movable plate is movably connected with the inner cavity of the fixed cylinder, a spring is provided on the surface of the movable plate, two limit grooves are provided on both sides of the surface of the air duct body and the connecting frame, one end of the limit pin passes through the air duct body and is movably connected with the connecting frame through the limit groove, the above technical scheme is adopted so that the connecting frame can be conveniently disassembled and installed inside the air duct body, thereby improving work efficiency.

[0008] Preferably, balls are provided on both sides of the movable plate. The above technical solution is adopted to improve the stability of the movable plate when it moves, thereby improving the efficiency of disassembly and installation of the connection frame.

[0009] Preferably, Velcro 2 is fixedly provided on one side of the four sound-absorbing panels, Velcro 1 is detachably provided on the surface of Velcro 2, and a first magnetic block is fixedly provided on one side of Velcro 1. The above technical solution is adopted so that the first magnetic block can be easily disassembled and recycled.

[0010] Preferably, a plurality of fourth magnetic blocks are evenly distributed on the surface of the air duct body, a vertical rod is provided in the middle position between every two of the fourth magnetic blocks, the bottom end of the vertical rod is connected to the surface of the air duct body, and the top of the vertical rod is rotatably connected to a limiting plate; third magnetic blocks are fixedly provided on both sides of the limiting plate, and the third magnetic blocks are detachably connected to the fourth magnetic block and the first magnetic block respectively. The above technical scheme is adopted so that the limiting plate can drive the third magnetic block to connect to the fourth magnetic block and the first magnetic block respectively, so as to achieve the function of limiting the sound absorbing panel.

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

[0012] 1. By detachably setting the sound-absorbing panel on the surface of the connection frame, when the connection frame is damaged, only the damaged sound-absorbing panel needs to be pulled outward to separate the slide rail from the connection block, and then a new sound-absorbing panel is installed. In this way, only the damaged sound-absorbing panel needs to be replaced during the maintenance process, which can effectively reduce the maintenance cost, and is easy to install and simple to operate.

[0013] 2. The first magnetic block is detachably installed on the surface of the sound-absorbing board through Velcro 2. After a single sound-absorbing board is replaced, the first magnetic block is removed and connected with Velcro 1 at the bottom of the first magnetic block through Velcro 2 set on the surface of the new sound-absorbing board, so that the first magnetic block can be continuously recycled, reducing resource waste and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the air duct body of the utility model.

[0016] Figure 3 It is a structural schematic diagram of one side of the sound-absorbing panel of the utility model.

[0017] Figure 4 It is a schematic diagram of the structure of the clamping assembly of the utility model.

[0018] Figure 5 It is a schematic diagram of the limit plate structure of the utility model.

[0019] The accompanying drawings are marked as follows: 1. duct body; 2. connecting frame; 3. sound-absorbing panel; 4. first magnetic block; 5. fixing tube; 6. convex ball; 7. limiting plate; 8. connecting block; 9. limiting groove; 10. slide rail; 11. second magnetic block; 12. handle; 13. spring; 14. movable plate; 15. ball bearing; 16. limiting pin; 17. vertical rod; 18. Velcro 1; 19. Velcro 2; 20. third magnetic block; 21. fourth magnetic block. DETAILED DESCRIPTION

[0020] 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.

[0021] As attached Figure 1-5A noise reduction device is shown, comprising an air duct body 1, both sides of the air duct body 1 are provided with snap-on components, a connecting frame 2 is detachably provided inside the air duct body 1, four connecting blocks 8 are provided on the inner wall of the connecting frame 2, sound-absorbing panels 3 are detachably provided on all four sides of the inner wall of the connecting frame 2, a slide rail 10 is provided on one side of the four sound-absorbing panels 3, a second magnetic block 11 is fixedly provided on one side of the slide rail 10, the second magnetic block 11 can be magnetically attracted to one end of the connecting block 8, a plurality of convex balls 6 are provided on the other sides of the four sound-absorbing panels 3, and the function of detachable connection between the sound-absorbing panel 3 and the connecting frame 2 can be achieved by snapping the connecting block 8 with the slide rail 10.

[0022] As shown in the accompanying drawings, the clamping assembly includes a fixed cylinder 5 fixedly arranged on the surface of the air duct body 1, two limit pins 16 are arranged inside the fixed cylinder 5, and the two limit pins 16 are movably connected with the fixed cylinder 5. A handle 12 is arranged on one side of the fixed cylinder 5, and the handle 12 is fixedly arranged on the top of the limit pin 16. A movable plate 14 is fixedly arranged on the outside of the two limit pins 16, and the movable plate 14 is movably connected with the inner cavity of the fixed cylinder 5. A spring 13 is arranged on the surface of the movable plate 14. Two limit grooves 9 are provided on both sides of the surface of the air duct body 1 and the connecting frame 2. One end of the limit pin 16 passes through the limit groove 9 and is movably connected with the connecting frame 2. The ball 15 squeezes the spring to achieve the function of the movable plate 14 driving the limit pin 16 to move and plug into the limit groove 9 arranged on the surfaces of the air duct body 1 and the connecting frame 2, thereby realizing the function of detachable installation of the air duct body 1 and the connecting frame 2.

[0023] As shown in the drawings, balls 15 are provided on both sides of the movable plate 14 , which is beneficial for improving the stability of the movable plate 14 when the movable plate 14 moves through the rolling of the balls 15 .

[0024] As shown in the accompanying drawings, one side of the four sound-absorbing panels 3 is fixedly provided with Velcro 2 19, and Velcro 1 18 is detachably provided on the surface of Velcro 2 19, and a first magnetic block 4 is fixedly provided on one side of Velcro 18. This is beneficial for removing the first magnetic block 4 after replacing a single sound-absorbing panel 3, and connecting the Velcro 2 19 provided on the surface of the new sound-absorbing panel 3 with the Velcro 1 18 at the bottom of the first magnetic block 4, so that the first magnetic block 4 can be continuously recycled, thereby achieving the function of reducing resource waste and maintenance costs.

[0025] As shown in the accompanying drawings, a plurality of fourth magnetic blocks 21 are evenly distributed on the surface of the air duct body 1, and a vertical rod 17 is arranged in the middle position between every two fourth magnetic blocks 21, the bottom end of the vertical rod 17 is connected to the surface of the air duct body 1, and the top of the vertical rod 17 is rotatably connected to the limiting plate 7; third magnetic blocks 20 are fixedly arranged on both sides of the limiting plate 7, and the third magnetic blocks 20 are detachably connected to the fourth magnetic blocks 21 and the first magnetic blocks 4 respectively, and the sound absorbing panel 3 can be pulled out by rotating the limiting plate 7 so that the third magnetic block 20 is connected to the fourth magnetic block 21, and the limiting plate 7 is rotated so that one of the third magnetic blocks 20 is magnetically attracted to the first magnetic block 4, so as to achieve the function of limiting the sound absorbing panel 3.

[0026] Working principle of the utility model: when installing the connecting frame 2, the handle 12 is first pulled outward, and then the connecting frame 2 is placed inside the air duct body 1, and the handle 12 is released at the same time, and then the spring 13 restores its own elasticity to push the movable plate 14, thereby driving the limiting latch 16 to move parallely so that one end of the limiting latch 16 can be inserted into the limiting groove 9, so that the connecting frame 2 can be limited and fixed in the inner cavity of the air duct body 1; when the connecting frame 2 needs to be repaired, the third magnetic block 20 is connected to the fourth magnetic block 21 by rotating the limiting plate 7, and the sound-absorbing panel 3 is pulled outward, and then the replaced sound-absorbing panel 3 is clamped with the connecting block 8 through the slide rail 10 until the second magnetic block 11 is magnetically attracted to one side of the connecting block 8, and then the limiting plate 7 is rotated again so that one of the third magnetic blocks 20 is magnetically attracted to the first magnetic block 4 to complete the installation.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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. A noise reduction device, comprising an air duct body (1), characterized in that: Both sides of the air duct body (1) are provided with snap-on components, a connection frame (2) is detachably provided inside the air duct body (1), four connection blocks (8) are provided on the inner wall of the connection frame (2), sound-absorbing panels (3) are detachably provided on the four inner walls of the connection frame (2), a slide rail (10) is provided on one side of the four sound-absorbing panels (3), a second magnetic block (11) is fixedly provided on one side of the slide rail (10), the second magnetic block (11) can be magnetically attracted to one end of the connection block (8), and a plurality of convex balls (6) are provided on the other side of the four sound-absorbing panels (3).

2. A noise reduction device according to claim 1, characterized in that: The clamping assembly comprises a fixed cylinder (5) fixedly arranged on the surface of the air duct body (1), two limit pins (16) are arranged inside the fixed cylinder (5), and the two limit pins (16) are movably connected to the fixed cylinder (5); a handle (12) is arranged on one side of the fixed cylinder (5), and the handle (12) is fixedly arranged on the top of the limit pin (16); a movable plate (14) is fixedly arranged outside the two limit pins (16), and the movable plate (14) is movably connected to the inner cavity of the fixed cylinder (5); a spring (13) is arranged on the surface of the movable plate (14); two limit slots (9) are provided on both sides of the surface of the air duct body (1) and the connection frame (2), and one end of the limit pin (16) passes through the air duct body (1) through the limit slot (9) and is movably connected to the connection frame (2).

3. A noise reduction device according to claim 2, characterized in that: Balls (15) are arranged on both sides of the movable plate (14).

4. A noise reduction device according to claim 1, characterized in that: One side of the four sound absorbing panels (3) is fixedly provided with a second Velcro (19), the surface of the second Velcro (19) is detachably provided with a first Velcro (18), and one side of the first Velcro (18) is fixedly provided with a first magnetic attraction block (4).

5. A noise reduction device according to claim 1, characterized in that: A plurality of fourth magnetic blocks (21) are evenly distributed on the surface of the air duct body (1), a vertical rod (17) is provided between every two of the fourth magnetic blocks (21), the bottom end of the vertical rod (17) is connected to the surface of the air duct body (1), and the top of the vertical rod (17) is rotatably connected to a limiting plate (7).

6. A noise reduction device according to claim 5, characterized in that: A third magnetic block (20) is fixedly arranged on both sides of the limit plate (7), and the third magnetic block (20) is detachably connected to the fourth magnetic block (21) and the first magnetic block (4) respectively.

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