Split type mute drainage pipeline

Abstract

The utility model discloses a split type mute drainage pipeline which comprises a core pipe, a damping vibration attenuation layer and an outer sleeve layer which are arranged from inside to outside and is characterized in that reinforcing ribs are evenly arranged on the inner wall of the outer sleeve layer in the length direction of the outer sleeve layer, a cavity is formed by every two adjacent reinforcing ribs and the damping vibration attenuation layer, and porous sound absorption materials are filled in the cavities. When sound waves are transmitted out of the core pipe, the sound waves firstly pass through the damping vibration attenuation layer, vibration is attenuated through the constraint damping effect of the damping vibration attenuation layer, the transmission sound energy can be remarkably reduced through the high-density damping fins, then the sound waves pass through the cavities formed by the two adjacent reinforcing ribs and the damping vibration attenuation layer, the sound absorption materials in the cavities absorb noise transmitted by the core pipe, and therefore sound energy is attenuated; the noise reduction effect of the drainage pipeline is optimal, the problem that the drainage noise of the drainage pipeline is too large is solved, and the split type mute drainage pipeline structure has the advantages of being reasonable in design, easy to construct and operate and remarkable in noise reduction effect.

Description

Technical Field

[0001] The utility model relates to the field of drainage pipes, in particular to a split-type silent drainage pipe. Background Art

[0002] As people's living standards improve, the harm caused by noise inside buildings to the human body has attracted more and more attention. The sources of noise inside buildings are mainly the following two aspects: one is common household appliances, such as air conditioners, stereos, etc.; the other is the noise generated by the building drainage system.

[0003] In order to reduce the interference of drainage noise on the human body, scientific researchers have developed various types of silent pipes. For example, the Chinese utility model patent with publication number CN219159829U uses a multi-layer co-extrusion method to prepare silent composite pipes, which can suppress drainage noise. Since there are multiple structures and composites between different materials in the composite pipe, the molding process is extremely strict, and the process is cumbersome and the scrap rate is high. In addition, many researchers use high-density particles to fill HDPE / PP to prepare silent composite pipes. This method has a relatively simple molding process and is easy to control, but the pipe has problems such as reduced docking strength and insignificant noise reduction effect.

[0004] Therefore, the purpose of the utility model is to provide a split-type silent drainage pipe with good noise reduction effect. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a split silent drainage pipe, which has a simple molding process and can effectively improve the sound insulation performance of the composite pipe.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A split silent drainage pipe comprises a core pipe, a damping and vibration reduction layer and an outer sleeve layer arranged from the inside to the outside, characterized in that the inner wall of the outer sleeve layer is evenly provided with reinforcing ribs along its length direction, and two adjacent reinforcing ribs and the damping and vibration reduction layer form a cavity, wherein the interior of the cavity is filled with porous sound-absorbing material to form a sound-absorbing and noise-reducing layer.

[0008] Furthermore, the reinforcing rib has a thickness of 10-15 mm and a width of 3-5 mm; the reinforcing rib is tightly fitted to the damping and vibration reduction layer.

[0009] Furthermore, the thickness of the porous sound-absorbing material is the same as the thickness of the reinforcing ribs, and the length of the porous sound-absorbing material is the same as the distance between two adjacent reinforcing ribs.

[0010] Furthermore, the porous sound-absorbing material is open-cell foamed polyurethane or polyester fiber sound-absorbing cotton.

[0011] Furthermore, the outer sleeve layer includes a tube body 1 and a tube body 2 that are detachably connected, the outer surface of the tube body 1 is evenly provided with female buckles along its length direction, and the outer surface of the tube body 2 is provided with sub-buckles matching the female buckles, and the tube body 1 and the tube body 2 are locked by the female and sub-buckles.

[0012] Furthermore, the damping and vibration reduction layer is a non-vulcanized constrained damping sheet with a thickness of 1-3 mm.

[0013] Furthermore, the outer sleeve layer and the core tube have the same length, and the outer sleeve layer and the core tube are made of different materials.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1) According to the technical solution of the utility model, the inner wall of the outer sleeve layer is uniformly provided with reinforcing ribs along its length direction, and two adjacent reinforcing ribs and the damping and vibration reduction layer form a chamber, wherein the interior of the chamber is filled with porous sound absorption. When the sound wave is transmitted from the core pipe, it first passes through the damping and vibration reduction layer, and its restrained damping effect attenuates the vibration, and the high-density damping sheet can significantly reduce the transmitted sound energy, and then passes through the chamber formed by the two adjacent reinforcing ribs and the damping and vibration reduction layer. The sound-absorbing material in the chamber absorbs the noise transmitted by the core pipe, causing the sound energy to attenuate, so that the noise reduction effect of the drainage pipe is optimized, and the problem of excessive drainage noise in the drainage pipe is solved;

[0016] 2) Unlike the traditional composite pipe formed by multi-layer co-extrusion, the outer sleeve layer of the utility model includes a detachably connected pipe body 1 and a pipe body 2, and the pipe body 1 and the pipe body 2 are locked by a snap fastener. On the one hand, it is conducive to the design of the noise reduction structure, and on the other hand, there is no problem of molding difficulty;

[0017] 3) Compared with the free damping sheet, the damping and vibration reduction layer in the utility model is a non-vulcanized constrained damping sheet, which has better vibration reduction and noise reduction effects, and will further improve the noise reduction effect. In addition, it has self-adhesiveness and can achieve rapid covering construction;

[0018] 4) The split silent drainage pipe structure of the utility model has the characteristics of reasonable design, simple construction operation and significant noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the outer sleeve layer of the utility model.

[0021] In the figure: 1. outer sleeve layer; 2. sound absorption and noise reduction layer; 3. damping and vibration reduction layer; 4. core tube; 11. female buckle; 12. female buckle; 14. reinforcing ribs; 15. porous sound-absorbing cotton. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings, but the scope of protection of the utility model is not limited thereto.

[0023] like Figure 1 As shown, a split silent drainage pipe includes a core pipe 4, a damping and vibration reduction layer 3, a sound absorption and noise reduction layer 2 and an outer sleeve layer 1 arranged from the inside to the outside. The core pipe 4 is located at the innermost side and is made of one of PP, PE, and PVC.

[0024] like Figure 2 As shown, the inner wall of the outer sleeve layer 1 is evenly provided with reinforcing ribs 14 along its length direction, and the reinforcing ribs are constructed at equal distances on the inner wall of the outer sleeve layer 1. Two adjacent reinforcing ribs 14 and the damping and vibration reduction layer 3 form a cavity, wherein the cavity is filled with porous sound-absorbing material, thereby forming a sound-absorbing and noise-reducing layer 2, which plays a role in further reducing noise. The porous sound-absorbing material is open-cell foamed polyurethane or polyester fiber sound-absorbing cotton.

[0025] The thickness of the porous sound-absorbing material is the same as that of the reinforcing rib, and its length is the same as the distance between two adjacent reinforcing ribs 14. It is filled in the cavity to absorb the noise transmitted by the core tube, so that the noise reduction effect of the composite pipeline is optimized.

[0026] In this embodiment, the reinforcing rib 14 has a thickness of 10-15 mm and a width of 3-5 mm. The reinforcing rib 14 can be closely attached to the damping layer 3 to ensure the connection stability between the outer sleeve layer 1 and the core tube 4.

[0027] The damping and vibration reduction layer 3 in the utility model is a non-vulcanized constrained damping sheet with a thickness of 1-3 mm. Compared with the free damping sheet, it has better vibration reduction and noise reduction effects, which will further improve the noise reduction effect. In addition, it has self-adhesiveness and can achieve rapid covering construction.

[0028] The outer sleeve layer 1 has the same length as the core tube 4 . In the present embodiment, the outer sleeve layer 1 is made of one of PP, PE and PVC, but is different from the core tube 4 in material.

[0029] In this embodiment, by using a multilayer structure with different thicknesses, densities and materials, the critical frequencies of the resonance and matching effects can be staggered, and the sound insulation valleys in the resonance area and the matching area can be improved, thereby greatly improving the overall sound insulation performance.

[0030] The impedances of the multi-layer structure of the drainage pipe of the utility model are different, so that the sound waves produce multiple reflections on the interfaces of each layer. The greater the difference in impedance, the more reflected sound energy there is, and the less transmitted sound energy there is, so that the noise is significantly reduced; the damping and sound absorption effect of the multi-layer material causes the sound energy to attenuate, which can weaken the resonance and matching effects and reduce the transmitted sound energy.

[0031] Compared with traditional composite pipes, such as Figure 2 As shown, the outer sleeve layer 1 includes a tube body 1 and a tube body 2 that are detachably connected. The outer surface of the tube body 1 is evenly provided with female buckles 11 along its length direction, and the outer surface of the tube body 2 is provided with sub-buckles 12 that match the female buckle 11. The tube body 1 and the tube body 2 are locked by the female buckle, which avoids the problem of difficulty in pipeline molding and is also more favorable for the noise reduction structure design.

[0032] When the sound wave is transmitted from the core tube 4, it first passes through the damping and vibration reduction layer 3, whose constrained damping effect attenuates the vibration, and the high-density damping sheet can significantly reduce the transmitted sound energy. Then, it passes through the cavity formed by the two adjacent reinforcing ribs 14 and the damping and vibration reduction layer 3. The sound-absorbing material in the cavity absorbs the noise transmitted by the core tube, causing the sound energy to attenuate, so that the noise reduction effect of the drainage pipe is optimized. In addition, the three layers of the drainage pipe have different materials, thicknesses and densities, which can effectively stagger the critical frequencies of the resonance and matching effects, improve the sound insulation troughs between the resonance area and the matching area, and thus greatly improve the overall sound insulation performance.

Claims

1. A split-type silent drainage pipe, comprising a core pipe (4), a damping and vibration reduction layer (3) and an outer sleeve layer (1) arranged from the inside to the outside, characterized in that The inner wall of the outer sleeve layer (1) is evenly provided with reinforcing ribs (14) along its length direction, and two adjacent reinforcing ribs (14) and the damping and vibration reduction layer (3) form a cavity, wherein the interior of the cavity is filled with porous sound-absorbing material to form a sound-absorbing and noise-reducing layer (2).

2. A split silent drainage pipe according to claim 1, characterized in that The reinforcing rib (14) has a thickness of 10-15 mm and a width of 3-5 mm; the reinforcing rib (14) is tightly fitted to the damping and vibration reduction layer (3).

3. A split silent drainage pipe according to claim 1, characterized in that The thickness of the porous sound-absorbing material is the same as the thickness of the reinforcing ribs, and its length is the same as the distance between two adjacent reinforcing ribs (14).

4. A split silent drainage pipe according to claim 1 or 3, characterized in that The porous sound-absorbing material is open-cell foamed polyurethane or polyester fiber sound-absorbing cotton.

5. The split silent drainage pipe according to claim 1 is characterized in that The outer sleeve layer (1) comprises a detachably connected tube body 1 and a tube body 2, wherein the outer surface of the tube body 1 is evenly provided with female buckles (11) along its length direction, and the outer surface of the tube body 2 is provided with sub-buckles (12) matching the female buckles (11), and the tube body 1 and the tube body 2 are locked by means of the sub-female buckles.

6. A split type silent drainage pipe according to claim 1, characterized in that The damping and vibration reduction layer (3) is a non-vulcanized constrained damping sheet with a thickness of 1-3 mm.

7. The split silent drainage pipe according to claim 1, characterized in that The outer sleeve layer (1) and the core tube (4) have the same length, and the outer sleeve layer (1) and the core tube (4) are made of different materials.

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