A sound attenuation device for a drain pipe

Abstract

This utility model relates to the field of pipe sound insulation technology and discloses a noise reduction device for drainage pipes, including a sewage pipe. A support assembly is fixedly connected to the outside of the sewage pipe, and a slot is fixedly connected to the support assembly. Two fixed posts are fixedly connected inside the slot, and multiple fixing knobs are fixedly connected to both ends of the two fixed posts. In this utility model, when a large amount of water flows out of the sewage pipe, the force of the water pressure from the shock-absorbing ring is transmitted to the sewage pipe, causing it to shake. The shaking force is then transmitted to the fixed posts, where a pressing spring outside the fixed posts compresses and forms a buffer, stabilizing the sewage pipe and reducing noise. Inside the sewage pipe, there is an internal spiral guide ring. When water flows down quickly, it flows out in an orderly spiral shape along the guide ring, preventing it from rushing around. Simultaneously, the inside of the sewage pipe is hollow at intervals, further reducing noise.

Description

Technical Field

[0001] This utility model relates to the field of pipe sound insulation technology, and in particular to a sound-absorbing device for drainage pipes. Background Technology

[0002] Sewage pipe noise reduction devices are installed in sewage pipe systems. By using porous sound-absorbing materials, special pipe structure design and resonant cavity technology, they absorb, reflect and dissipate the noise energy generated by water flow impacting the pipe wall and bubble bursting during drainage, thereby effectively reducing drainage noise, creating a quiet and comfortable environment in the building, and reducing interference with the lives of surrounding residents.

[0003] The sewage pipe silencing device consists of a main pipe, noise reduction functional components, and auxiliary parts. The main pipe is made of sound-insulating material and can be specially treated on the inner wall. The noise reduction functional components include sound-absorbing materials, flow guiding structures, and resonant buffer structures. The auxiliary parts are used for fixing and sealing. Its working principle is to use sound-absorbing materials to convert sound energy into heat energy, optimize the water flow pattern and reduce impact through the flow guiding structure, dissipate the energy of specific frequency sound waves through the resonant buffer structure, and reduce the generation and propagation of noise through sound-insulating materials and vibration reduction design, thereby achieving drainage noise reduction.

[0004] In existing technologies, sewage pipes generate significant noise due to the rapid impact of water, causing it to sway and vibrate within the pipe. The new design addresses this by using external vibration damping to optimize pipeline system performance through vibration isolation, absorption, and reduction. This is particularly important in residential, hospital, and commercial buildings where noise and stability requirements are high, serving as a crucial measure to ensure the long-term reliable operation of water supply and drainage systems. Therefore, a noise reduction device for drainage pipes is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a noise reduction device for drainage pipes, which aims to improve the problem that some pipes in the prior art do not have shock-absorbing rings, resulting in excessive noise due to water pressure inside the pipes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A silencing device for a drainage pipe includes a sewage pipe, a support assembly fixedly connected to the outside of the sewage pipe, a slot fixedly connected to the support assembly, two fixed posts fixedly connected inside the slot, two square hollow frames fixedly connected to the outside of the two fixed posts, two pressing springs sleeved on the outside of the fixed posts, and multiple fixing buttons fixedly connected to both ends of the two fixed posts.

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

[0009] The support assembly includes a shock-absorbing ring, with two bolts a threadedly connected to the outer two sides of the shock-absorbing ring, and two retaining rings threadedly connected to the outer sides of the two bolts a. Two fixing plates are fixedly connected to the outer sides of the shock-absorbing ring, and the two fixing plates are fixedly connected to the outer sides with retaining grooves.

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

[0011] The sewage pipe is equipped with an internal spiral drainage ring, a protective net is fixedly connected to the top of the sewage pipe, and an anti-backflow pipe is installed on the outside of the sewage pipe.

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

[0013] The top of the anti-backflow pipe is fixedly connected to two extension plates, and a rotating column is fixedly connected inside the two extension plates. A connecting plate is rotatably connected to the outside of the rotating column.

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

[0015] The connecting plate is externally fixedly connected to two semi-circular connecting plates, and the bottom of the semi-circular connecting plates is fixedly connected to an anti-backflow cover. The sewage pipe is externally provided with a fixing sleeve.

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

[0017] The top of the fixed sleeve is fixedly connected to two limiting rings, the internal threads of the limiting rings are connected to bolts b, and the external threads of bolts b are connected to fixing buttons b.

[0018] As a further description of the above technical solution:

[0019] The exterior of the two square hollow frames is set inside the slot, and the exterior of the two fixing columns is fixedly connected to the interior of the two square hollow frames.

[0020] As a further description of the above technical solution:

[0021] The two retaining rings are positioned outside the shock-absorbing ring, and one side of the anti-backflow cover is positioned outside the anti-backflow pipe.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the shock-absorbing ring on both sides of the sewage pipe is tightened with bolts a to form a fixed structure. When a large amount of water flows out of the sewage pipe, the pressure of the water causes a lot of noise inside the pipe. When a shock-absorbing ring is fixed on the outside, the sewage pipe shakes because the force of the water pressure is transmitted to the sewage pipe. At this time, the shaking force is transmitted to the fixed column, and the pressing spring on the outside of the fixed column squeezes to form a buffer, which stabilizes the sewage pipe and reduces noise. At the same time, it protects the sewage pipe and extends its service life. The shock-absorbing ring has a long strip of soft silicone material inside that fits tightly against the outer wall of the sewage pipe. There is a spiral guide ring inside the sewage pipe. When the water flows down at a fast speed, it flows out in an orderly spiral shape along the spiral guide ring, without rushing around. At the same time, the inside of the sewage pipe is hollow at intervals to reduce noise, thus achieving the desired effect.

[0024] 2. In this utility model, when water flows out of the sewage pipe, the remaining water will flow back. When a large amount of water rushes out of the anti-backflow pipe, the semi-circular connecting plate at the top of the anti-backflow cover is connected to the outside of the connecting plate. Under water pressure, the connecting plate rotates outside the rotating column, which at the same time drives the anti-backflow cover to rotate upward to make the water flow out. After the water flows out, the remaining water flows back. At this time, the anti-backflow cover blocks the anti-backflow pipe opening, so that the water will not flow back. Some pipes do not have an anti-backflow design, which causes the remaining water inside the sewage pipe to flow back and create noise. The problem of noise caused by the backflow and accumulation of residual water inside the sewage pipe is solved. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a silencing device for drainage pipes proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of a shock-absorbing ring for a noise reduction device for drainage pipes proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Legend:

[0029] 1. Sewage pipe; 2. Shock-absorbing ring; 3. Bolt a; 4. Snap ring; 5. Fixing plate; 6. Snap groove; 7. Square hollow frame; 8. Fixing column; 9. Pressing spring; 10. Fixing button a; 11. Spiral drainage ring inside the pipe; 12. Anti-backflow pipe; 13. Extension plate; 14. Rotating column; 15. Connecting plate; 16. Semi-arc connecting plate; 17. Anti-backflow cover; 18. Fixing sleeve; 19. Limiting ring; 20. Bolt b; 21. Fixing button b; 22. Protective net. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a noise reduction device for drainage pipes, including a sewage pipe 1. The sewage pipe 1 provides an installation position for other components in the noise reduction device. The water flow inside the sewage pipe is the source of noise and is also the object of noise reduction treatment. An external fixed connection is provided with a support component. The support component is fixedly connected with a slot 6. The slot 6 can adaptively adjust according to the vibration of the pipe to further enhance the noise reduction effect. An internal fixed connection is provided with two fixed columns 8. The two fixed columns 8 ensure the stable operation of the entire elastic support structure, so that the square hollow frame 7 and the pressing spring 9 can effectively play the function of shock absorption and noise reduction. An external fixed connection is provided with two square hollow frames 7. Two pressing springs 9 are sleeved on the outside of the fixed columns 8. Multiple fixing buttons a10 are fixedly connected at both ends of the two fixed columns 8 to ensure the relative position stability of the components of the entire elastic support structure and ensure the reliability of the shock absorption and noise reduction effect. The support component includes a shock-absorbing ring 2, which reduces the noise generated by pipe vibration. The outer sides are designed with threaded holes for connecting bolts a3. There are two bolts a3 on the outer sides of the bolts a3. There are two retaining rings 4 on the outer threads of the two bolts a3. There are two fixing plates 5 on the outer fixed connection of the shock-absorbing ring 2. The two fixing plates 5 provide a stable installation base for the retaining groove 6, ensuring the structural strength of the entire support assembly. The outer fixed connection has retaining groove 6.

[0032] Reference Figures 2 to 3The sewage pipe 1 is internally equipped with an internal spiral guide ring 11 to improve drainage efficiency and reduce additional noise caused by poor water flow. Bolts b20 are fixedly connected to the top of the sewage pipe 1. An anti-backflow pipe 12 is installed externally on the sewage pipe 1. The anti-backflow pipe 12 allows water to flow normally downstream but prevents reverse flow, protecting the normal operation of the drainage system and avoiding problems such as odor emission and pipe damage caused by sewage backflow. Two extension plates 13 are fixedly connected to the top, ensuring that the rotating column 14 can be stably installed on the anti-backflow pipe 12, allowing the connecting plate 15 and the anti-backflow cover 17 to rotate flexibly around the rotating column 14. An internally fixed rotating column 14 is connected, and an externally rotatable connection is provided. The connecting plate 15 provides a reliable backflow prevention function. Two semi-circular connecting plates 16 are externally fixedly connected to ensure the backflow prevention cover 17 accurately covers the opening of the backflow prevention pipe 12, effectively preventing sewage backflow. The bottom is fixedly connected to the backflow prevention cover 17. A fixing sleeve 18 is provided on the outside of the sewage pipe 1, and a protective net 22 is provided on the top of the sewage pipe 1. The fixing sleeve 18 provides a stable installation base, ensuring that the limit ring 19 and other components do not shift during operation, thus guaranteeing the structural stability of the entire device. Two limit rings 19 are fixedly connected to the top, ensuring the normal operation of the device and the effective functioning of noise reduction and backflow prevention. Bolts b are internally threaded. 20. The tightening degree of bolt b20 can be adjusted according to actual installation requirements. Bolt b20 has a fixing button b21 on the outside to ensure the installation accuracy and stability of each component. The outside of the two square hollow frames 7 is set inside the slot 6. The outside of the two fixing columns 8 is fixedly connected to the inside of the two square hollow frames 7. The outside of the two retaining rings 4 is set outside the shock-absorbing ring 2. The outside of the anti-backflow cover 17 is set outside the anti-backflow pipe 12 on one side.

[0033] Working principle: By rotating the bolt a3 on the outside of the shock-absorbing ring 2 inward and tightening the retaining ring 4, the sewage pipe 1 is squeezed. When water flows into the sewage pipe 1, it flows out spirally along the spiral guide ring 11 inside the sewage pipe 1, greatly reducing the noise of the water flow. The sewage pipe 1 has a vacuum design at intervals. Due to the high water pressure, the sewage pipe 1 shakes. When the sewage pipe 1 shakes, the shaking force is transmitted to the fixing plate 5 on the outside of the shock-absorbing ring 2. The fixing plate 5 then fixes the retaining groove 6 and the fixing post 8 through the retaining groove 6. Inside the retaining groove 6 is a square hollow frame 7. The sewage pipe 1 is squeezed by the water, and the force is transmitted to the fixing post 8. The pressing spring 9 forms a buffer. The fixing button a10 is fixed at both ends of the fixing post 8 to prevent it from falling off. The rubber strip inside the shock-absorbing ring 2 is close to the outside of the spiral guide ring 11 inside the pipe to reduce the noise of the water inside the sewage pipe 1. The shock-absorbing device reduces the noise of the water when the water flows sharply. The vibration damping device not only stabilizes the sewage pipe 1 but also reduces noise from the water flow inside the sewage pipe 1. The sewage pipe 1 has a protective net 22 inside to prevent objects from falling into the sewage pipe 1 and to prevent blockage. An anti-backflow pipe 12 is installed outside the sewage pipe 1. When water flows out of the sewage pipe 1 and rushes through the anti-backflow cover 17, a fixing sleeve 18 is put on the outside of the sewage pipe 1. The fixing limit ring 19 at the top of the fixing sleeve 18 is fixed with bolts b20 and then tightened with fixing buttons b21. The top extension plate 13 of the anti-backflow pipe 12 fixes the rotating column 14 so that the semi-arc connecting plate 16 is fixed outside the connecting plate 15. When the water flows out of the anti-backflow cover 17, the water pressure drives the connecting plate 15 outside the semi-arc connecting plate 16 to rotate. The rotation also drives the anti-backflow cover 17. When the water flows out, the remaining water will gather together and return to the inside of the pipe, creating noise. However, the anti-backflow cover 17 blocks the water from flowing back into the pipe.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sound attenuation device for a drainage pipe comprising a sewer pipe (1), characterized in that: The sewage pipe (1) is externally fixedly connected to a support assembly, the support assembly is fixedly connected to a slot (6), the slot (6) is internally fixedly connected to two fixed columns (8), the two fixed columns (8) are externally fixedly connected to two square hollow frames (7), the fixed columns (8) are externally sleeved with two pressing springs (9), and both ends of the two fixed columns (8) are fixedly connected to multiple fixing buttons a (10).

2. A sound attenuation device for a drain pipe according to claim 1, characterized in that: The support assembly includes a shock-absorbing ring (2), with two bolts a (3) threadedly connected to the outer sides of the shock-absorbing ring (2), and two retaining rings (4) threadedly connected to the outer sides of the two bolts a (3). The shock-absorbing ring (2) is fixedly connected to the outer side of two fixing plates (5), and the two fixing plates (5) are fixedly connected to the outer side of a retaining groove (6).

3. A sound attenuation device for a drain pipe according to claim 2, wherein: The sewage pipe (1) is provided with an internal spiral drainage ring (11), the top of the sewage pipe (1) is fixedly connected with a protective net (22), and the outside of the sewage pipe (1) is provided with an anti-backflow pipe (12).

4. A sound attenuation device for a drain pipe according to claim 3, wherein: The top of the anti-backflow pipe (12) is fixedly connected to two extension plates (13), and the inside of the two extension plates (13) is fixedly connected to a rotating column (14), and the outside of the rotating column (14) is rotatably connected to a connecting plate (15).

5. A sound attenuation device for a drain pipe according to claim 4, wherein: The connecting plate (15) is externally fixedly connected to two semi-arc connecting plates (16), and the bottom of the semi-arc connecting plate (16) is fixedly connected to an anti-backflow cover (17). The sewage pipe (1) is externally provided with a fixing sleeve (18).

6. A sound attenuation device for a drain pipe according to claim 5, wherein: The top of the fixed sleeve (18) is fixedly connected to two limiting rings (19), the internal threads of the limiting rings (19) are connected to bolts b (20), and the external threads of the bolts b (20) are connected to fixing buttons b (21).

7. A sound attenuation device for a drain pipe according to claim 1, characterized in that: The exterior of the two square hollow frames (7) is set inside the slot (6), and the exterior of the two fixing columns (8) is fixedly connected to the interior of the two square hollow frames (7).

8. A sound attenuation device for a drain pipe according to claim 5, wherein: The two retaining rings (4) are located outside the shock-absorbing ring (2), and the outer side of the anti-backflow cover (17) is located outside the anti-backflow pipe (12).

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