A noise-reducing drainage pipe

Abstract

This utility model provides a noise-reducing drainage pipe, including a drainage pipe body and a sound-absorbing cylinder. The sound-absorbing cylinder includes, from the inside out, a buffer sound-absorbing layer for absorbing vibrations of the drainage pipe body during water flow to reduce noise transmission, a sound-insulating cylinder for weakening noise passing through the buffer sound-absorbing layer, and a protective outer cylinder for protecting the buffer sound-absorbing layer and the sound-insulating cylinder. The buffer sound-absorbing layer is located between the drainage pipe body and the sound-insulating cylinder. When the drainage pipe transports rainwater or sewage, if the water flow velocity is too high, the water is prone to violent friction with the pipe wall. At this time, the buffer sound-absorbing layer absorbs the vibrations of the drainage pipe body to reduce noise transmission, and the sound-insulating cylinder weakens the noise passing through the buffer sound-absorbing layer, thereby reducing the noise generated by the water flow. The protective outer cylinder protects the buffer sound-absorbing layer and the sound-insulating cylinder.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, specifically to a noise-reducing drainage pipe. Background Technology

[0002] Drainage pipes are primarily responsible for draining rainwater, sewage, and agricultural irrigation water. In construction engineering...

[0003] Widely used, drainage pipes are responsible for draining water from roofs, kitchens, and bathrooms, preventing leaks caused by water accumulation. UPVC pipes are commonly used in drainage systems; they are a type of plastic pipe primarily employed in water supply piping projects.

[0004] Although some drainage pipes are embedded in concrete within buildings, others remain exposed on the exterior walls or ceilings. Exterior drainage risers, in particular, primarily transport rainwater or sewage collected on the roof to the ground, preventing water accumulation and blockages. However, when transporting rainwater or sewage, excessively high flow rates can cause severe friction against the pipe walls, generating noise that can disrupt residents' daily lives. Therefore, traditional drainage pipes cannot effectively reduce the noise generated by water flow during rainwater or sewage discharge. Utility Model Content

[0005] The purpose of this utility model is to provide a noise-reducing drainage pipe in response to the defects and deficiencies of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a noise-reducing drainage pipe, including a drainage pipe body and a sound-absorbing cylinder body. The sound-absorbing cylinder body includes, from the inside out, a buffer sound-absorbing layer for absorbing the vibration of the drainage pipe body when the drainage pipe body transports water, thereby reducing noise transmission; a sound-insulating cylinder body for weakening the noise passing through the buffer sound-absorbing layer; and a protective outer cylinder body for protecting the buffer sound-absorbing layer and the sound-insulating cylinder body. The buffer sound-absorbing layer is located between the drainage pipe body and the sound-insulating cylinder body.

[0007] A further improvement is that the buffer sound-absorbing layer consists of several arc-shaped convex rings, which are equidistantly fixed to the inner wall of the sound insulation cylinder. The arc-shaped convex rings are made of polyester fiber sound insulation cotton, glass fiber sound-absorbing cotton, or other sound-absorbing materials. A further improvement is that each arc-shaped convex ring has side deformation grooves on its upper and lower sides. These side deformation grooves increase the deformation space when the arc-shaped convex ring is pressed against the drain pipe body, and allow adjacent arc-shaped convex rings to come closer together after pressing.

[0008] A further improvement is that each of the aforementioned arc-shaped convex rings has a buffer cavity for improving the shock absorption of the arc-shaped convex ring.

[0009] A further improvement is that the sound insulation cylinder is a gypsum board cylinder or a wood fiber sound-absorbing board cylinder.

[0010] A further improvement is that the protective outer cylinder is made of polyvinyl chloride or polyethylene.

[0011] A further improvement is that the silencer body is symmetrically divided into two parts, which are symmetrically arranged on the outer wall of the drain pipe body and are fixed to the drain pipe body by connecting parts.

[0012] A further improvement is that the connector includes connecting side plates respectively disposed on the side walls of the two silencer cylinders, connecting through holes opened on the connecting side plates, connecting bolts disposed on the connecting side plates and located in the connecting through holes, and connecting nuts disposed on the connecting bolts.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows: when the drainage pipe transports rainwater or sewage, if the water flow velocity is too high, the water is prone to violent friction with the pipe wall. At this time, the buffer sound-absorbing layer absorbs the vibration of the drainage pipe body to reduce noise transmission, and the noise passing through the buffer sound-absorbing layer is weakened by the sound insulation cylinder, thereby reducing the noise generated by the water flow. The outer protective cylinder protects the buffer sound-absorbing layer and the sound insulation cylinder.

[0014] Further benefits: The connectors facilitate the installation of the silencer on the drain pipe without interfering with its construction. After the drain pipe is pre-installed, the silencer is installed on the outer surface of the drain pipe where noise reduction is needed. The connectors secure the silencer to the outer surface of the drain pipe. The silencer can also be disassembled when the drain pipe needs to be disassembled, repaired, or replaced.

[0015] Further effects: When the two sound-absorbing cylinders are wrapped around the outer wall of the drain pipe, the buffer sound-absorbing layer comes into contact with the outer wall of the drain pipe. As the connecting bolts and nuts are fixed, the buffer sound-absorbing layer is pressed against the outer wall of the drain pipe. The deformation of the buffer sound-absorbing layer reduces the gap between the outer wall of the drain pipe and the inner wall of the sound-absorbing cylinder, thereby improving the noise reduction effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front sectional view of the present invention;

[0018] Figure 2 This is a front sectional view of the sound-absorbing buffer layer and the sound-insulating cylinder in this utility model;

[0019] Figure 3 This is a cross-sectional view of the arc-shaped convex ring in this utility model;

[0020] Figure 4 This is a top sectional view of the present invention;

[0021] Figure 5 This is a top sectional view of the silencer cylinder in this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Drainage pipe body; 2. Silencing cylinder body; 3. Buffer sound-absorbing layer; 4. Sound insulation cylinder body; 5. Protective outer cylinder; 31. Arc-shaped convex ring; 32. Side deformation groove; 33. Buffer inner cavity; 6. Connecting side plate; 7. Connecting through hole; 8. Connecting bolt; 9. Connecting nut. Detailed Implementation

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0024] See Figures 1 to 5 As shown, the technical solution adopted in this specific embodiment is: a noise-reducing drainage pipe, including a drainage pipe body 1 and a sound-absorbing cylinder body 2. The sound-absorbing cylinder body 2 includes, from the inside to the outside, a buffer sound-absorbing layer 3 for absorbing the vibration of the drainage pipe body 1 when the drainage pipe body 1 transports water, so as to reduce the transmission of noise; a sound-insulating cylinder body 4 for weakening the noise passing through the buffer sound-absorbing layer 3; and a protective outer cylinder 5 for protecting the buffer sound-absorbing layer 3 and the sound-insulating cylinder body 4. The buffer sound-absorbing layer 3 is located between the drainage pipe body 1 and the sound-insulating cylinder body 4.

[0025] The buffer sound-absorbing layer 3 consists of several arc-shaped convex rings 31, which are equidistantly fixed to the inner wall of the sound insulation cylinder 4. The arc-shaped convex rings 31 are made of polyester fiber sound insulation cotton, glass fiber sound-absorbing cotton, or other sound-absorbing cotton. The buffer sound-absorbing layer 3 can also be a flat, cylindrical sound-absorbing cotton layer. The shape of the several arc-shaped convex rings 31 facilitates the compression deformation and adhesion between the buffer sound-absorbing layer 3 and the outer wall of the drainage pipe 1. Polyester fiber sound insulation cotton is made from polyester fiber through a hot-pressing process. It is non-toxic, harmless, environmentally friendly, and formaldehyde-free, with a sound absorption coefficient of up to 0.94 in the 125-4000Hz noise range. Glass fiber sound-absorbing cotton is a man-made inorganic fiber material made from molten glass fiber, possessing sound absorption and noise reduction, heat insulation, and corrosion resistance properties. Sound-absorbing cotton is a man-made inorganic fiber. It uses natural minerals such as quartz sand, limestone, and dolomite as main raw materials, combined with some chemical raw materials such as soda ash and borax to melt into glass. In its molten state, it is blown into flocculent fine fibers by external force. The fibers are three-dimensionally intertwined and entangled with each other, presenting many tiny gaps.

[0026] Each of the arc-shaped protruding rings 31 has a side deformation groove 32 on its upper and lower sides. The side deformation groove 32 is used to increase the deformation space of the side deformation groove 32 when the arc-shaped protruding ring 31 is squeezed with the drain pipe body 1, and to allow adjacent arc-shaped protruding rings 31 to come close together after being pressed together.

[0027] Each of the aforementioned arc-shaped convex rings 31 has a buffer cavity 33 for improving the vibration absorption of the arc-shaped convex ring 31.

[0028] The soundproof cylinder 4 is either a gypsum board cylinder or a wood fiber sound-absorbing board cylinder. Gypsum board itself has certain sound insulation properties. Its internal structure contains many tiny pores, and sound is constantly reflected and refracted in these pores during propagation, consuming some sound energy and thus reducing sound. Wood fiber sound-absorbing boards are made of poplar wood fiber, with a natural texture, suitable for high-end residences and art venues. They have a higher density and better sound insulation than ordinary sound-absorbing cotton, and are often used in concert halls, opera houses, and other spaces with high acoustic requirements. Several arc-shaped convex rings 31 are fixed to the soundproof cylinder 4 by hot melting, bonding, or clamping in a mold, and then injection molded into a protective outer cylinder 5 after the soundproof cylinder 4 is processed, or the protective outer cylinder 5 is fixed to the outer wall of the soundproof cylinder 4 by bonding or other methods.

[0029] The protective outer sleeve 5 is made of polyvinyl chloride (PVC) or polyethylene (PE). PVC material has excellent waterproof performance; its dense molecular structure and carbon chain structure effectively prevent water penetration. Adding UV stabilizers significantly improves its UV resistance, making it suitable for long-term exposure scenarios such as outdoor water pipes. PE material has a carbon chain structure on its surface, exhibiting excellent hydrophobicity and effectively preventing water penetration. Its UV resistance can be further enhanced by adding anti-aging agents, and it is commonly used for the outer protection of water pipes.

[0030] The silencer cylinder 2 is symmetrically divided into two parts, which are symmetrically arranged on the outer wall of the drain pipe body 1. The two silencer cylinders 2 are installed and fixed to the drain pipe body 1 by connectors. Figure 4 and Figure 5 As shown, the sound-absorbing buffer layer 3, the sound-insulating cylinder 4, and the protective outer cylinder 5 in the sound-absorbing cylinder 2 are symmetrically arranged in two separate parts.

[0031] The connector includes connecting side plates 6 respectively disposed on the side walls of the two silencer cylinders 2, connecting through holes 7 opened on the connecting side plates 6, connecting bolts 8 disposed on the connecting side plates 6 and located within the connecting through holes 7, and connecting nuts 9 disposed on the connecting bolts 8. Figure 4 and Figure 5As shown, the connecting side plate 6 is fixedly installed on the outer wall of the protective outer cylinder 5. The connecting side plate 6 and the protective outer cylinder 5 are integrally injection molded by a mold. The connecting side plate 6 is symmetrically arranged at the left and right ends of the protective outer cylinder 5, located at the parting line after the two silencer cylinders 2 are spliced. A connecting bolt 8 is provided in each pair of connecting side plates 6 that are close together. The head of the connecting bolt 8 abuts against one of the connecting side plates 6. Then, the connecting nut 9 is screwed into the threaded part of the connecting bolt 8 so that the connecting nut 9 abuts and fixes the two adjacent connecting side plates 6.

[0032] The working principle of this utility model is as follows: When the drainage pipe transports rainwater or sewage, if the water flow velocity is too high, the water will easily rub violently against the pipe wall. At this time, the buffer sound-absorbing layer 3 absorbs the vibration of the drainage pipe body 1 to reduce noise transmission, and the noise passing through the buffer sound-absorbing layer 3 is weakened by the sound insulation cylinder 4, thereby reducing the noise generated by the water flow. The outer protective cylinder 5 protects the buffer sound-absorbing layer 3 and the sound insulation cylinder 4.

[0033] The connection piece allows for easy installation of the muffler 2 onto the drain pipe 1 without interfering with the construction and installation of the drain pipe 1. After the drain pipe 1 is pre-installed, the muffler 2 is installed on the outer surface of the drain pipe 1 where noise reduction is required. The muffler 2 is fixed to the outer surface of the drain pipe 1 using the connection piece. Furthermore, the muffler 2 can be disassembled when the drain pipe 1 needs to be disassembled, repaired, or replaced.

[0034] When the two sound-absorbing cylinders 2 are wrapped around the outer wall of the drain pipe body 1, the buffer sound-absorbing layer 3 contacts the outer wall of the drain pipe body 1. With the fixing of the connecting bolts 8 and the connecting nuts 9, the buffer sound-absorbing layer 3 is pressed tightly against the outer wall of the drain pipe body 1. The deformation of the buffer sound-absorbing layer 3 reduces the gap between the outer wall of the drain pipe body 1 and the inner wall of the sound-absorbing cylinder 4, thereby improving the noise reduction effect.

[0035] This utility model aims to protect the structure of the product. The model numbers of the individual components are not the subject of this utility model's protection and are already known technology. Any component on the market that can achieve the functions described above can be used as a noise-reducing drainage pipe. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A noise reducing drain pipe comprising a drain pipe body, characterised in that: It also includes a sound-absorbing cylinder, which comprises, from the inside out, a buffer sound-absorbing layer for absorbing the vibration of the drain pipe body when the drain pipe body transports water to reduce noise transmission, a sound insulation cylinder for weakening the noise passing through the buffer sound-absorbing layer, and a protective outer cylinder for protecting the buffer sound-absorbing layer and the sound insulation cylinder. The buffer sound-absorbing layer is located between the drain pipe body and the sound insulation cylinder.

2. A noise reducing drain according to claim 1, wherein: The buffer sound-absorbing layer consists of several arc-shaped convex rings, which are equidistantly fixed on the inner wall of the sound insulation cylinder. The arc-shaped convex rings are made of polyester fiber sound insulation cotton, glass fiber sound-absorbing cotton, or sound-absorbing cotton.

3. A noise reducing drain according to claim 2, wherein: Each of the arc-shaped convex rings has side deformation grooves on its upper and lower sides. The side deformation grooves are used to increase the deformation space of the side deformation grooves when the arc-shaped convex rings are squeezed with the drain pipe body, and to allow adjacent arc-shaped convex rings to come close together after being pressed together.

4. A noise reducing drain according to claim 2 or 3, wherein: Each of the aforementioned arc-shaped convex rings has a buffer cavity for improving the shock absorption of the arc-shaped convex ring.

5. A noise reducing drain according to claim 1, wherein: The soundproof cylinder is a gypsum board cylinder or a wood fiber sound-absorbing board cylinder.

6. A noise reducing drain pipe according to claim 1, wherein: The protective outer cylinder is made of polyvinyl chloride or polyethylene.

7. A noise reducing drain according to claim 1, wherein: The silencer cylinder is symmetrically divided into two parts, which are symmetrically arranged on the outer wall of the drain pipe. The two silencer cylinders are installed and fixed to the drain pipe through connectors.

8. A noise reducing drain according to claim 7, wherein: The connector includes connecting side plates respectively disposed on the side walls of the two silencers, connecting through holes opened on the connecting side plates, connecting bolts disposed on the connecting side plates and located in the connecting through holes, and connecting nuts disposed on the connecting bolts.

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