Impact-resistant hollow-wall PP (polypropylene) mute drain pipe

Abstract

The utility model discloses an impact-resistant hollow-wall PP mute drain pipe. The technical problem that an existing mute drain pipe is poor in mute effect is mainly solved. The impact-resistant hollow-wall PP mute drain pipe comprises a drain pipe body, a plurality of sound insulation holes formed in the axial direction of the drain pipe body are formed in the circumference of the pipe wall of the drain pipe body in an array mode, the cross sections of the sound insulation holes are correspondingly in a sawtooth shape, and a spiral water guide flange is arranged on the inner edge of the pipe wall of the drain pipe body. Therefore, transmission energy of sound waves can be effectively reduced through the sawtooth-shaped sound insulation holes, water potential energy is correspondingly reduced through the spiral water guide flanges, and the mute effect of the drainage pipe is achieved through combined action.

Description

Technical Field

[0001] The present application relates to the technical field of water supply and drainage, and in particular to an impact-resistant hollow-wall PP silent drainage pipe. Background Art

[0002] Silent drain pipes are a piping system designed with specialized materials to reduce noise during water flow and drainage. They offer significant noise reduction, corrosion resistance, high and low temperature resistance, impact resistance, watertightness, environmental friendliness, and easy assembly and disassembly. They are widely used in various locations where a quiet environment is essential, effectively reducing noise such as water flow and fluid impact noise generated by water flowing through the pipes, thereby providing a more comfortable and peaceful living and working environment.

[0003] Existing silent drain pipes known to the inventors have smooth inner walls to reduce water flow resistance, thereby reducing noise. Alternatively, special materials are used to alter the pipe's density and microstructure, resulting in the pipe's ability to block the transmission of sound waves and absorb audible and acoustic sounds. Furthermore, some silent drain pipes utilize a multi-layer co-extrusion process, creating a multi-layer structure. For example, a special viscoelastic material is used in the middle layer to provide sound insulation, vibration reduction, and absorption of audible and acoustic sounds.

[0004] However, in the process of implementing the technical solutions in the embodiments of the present application, the inventors of the present application found that the above-mentioned silent drain pipe had limited noise absorption effect by changing the pipe material and increasing the number of pipe layers, and still could not effectively reduce the noise generated during the drainage process, affecting the use effect and experience.

[0005] The information disclosed in this background technology section is only used to deepen the understanding of the background technology of the present disclosure and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0006] In view of at least one of the above technical problems, the present disclosure provides an impact-resistant hollow-wall PP silent drain pipe, which mainly solves the technical problem of poor silent effect of existing silent drain pipes.

[0007] According to one aspect of the present disclosure, an impact-resistant hollow-wall PP silent drain pipe is provided, which includes a drain pipe body, a circumferential array of a pipe wall of the drain pipe body is provided with a plurality of sound insulation holes arranged along the axial direction of the pipe body, the cross-section of the sound insulation holes is correspondingly serrated, and the inner edge of the pipe wall of the drain pipe body is provided with a spiral water guide flange.

[0008] In some embodiments of the present disclosure, the number of teeth in the serrated cross-section corresponding to the sound insulation hole is no less than two.

[0009] In some embodiments of the present disclosure, a micro-foam sound insulation layer is embedded in the sound insulation hole.

[0010] In some embodiments of the present disclosure, the pipe wall between the sound insulation hole and the inner edge of the drain pipe body is the inner wall, and the pipe wall between the sound insulation hole and the outer edge of the drain pipe body is the outer wall, and the thickness of the inner wall is less than the thickness of the outer wall.

[0011] In some embodiments of the present disclosure, the spiral water guide flange includes a plurality of forward spiral water guide flanges and reverse spiral water guide flanges that are alternately arranged in sequence.

[0012] One or more technical solutions provided in the embodiments of the present disclosure have at least any of the following technical effects or advantages:

[0013] 1. The serrated sound insulation holes can achieve multiple reflections of the sound waves entering the holes, thereby increasing the sound wave reflection path, resulting in sound wave energy consumption, and thus achieving the technical effect of reducing noise.

[0014] 2. A micro-foam sound insulation layer is embedded in the sound insulation hole. The porous structure of the micro-foam sound insulation layer can absorb sound waves and dissipate energy, thereby further improving the quiet effect of the drainage pipe body.

[0015] 3. The staggered forward and reverse spiral water guide flanges on the inner edge of the drainage pipe body can change the direction of water vortex by staggering to reduce the potential energy of water flow, thereby reducing the noise caused by the water hammer effect and improving the drainage quietness effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a partial structural diagram of a silent drain pipe in one embodiment of the present application.

[0017] In the above figures, 1 is the drain pipe body, 11 is the inner wall, 12 is the outer wall, 2 is the sound insulation hole, 31 is the forward spiral water guide flange, and 32 is the reverse spiral water guide flange. DETAILED DESCRIPTION

[0018] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", "clockwise", "counterclockwise", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0019] In order to better understand the technical solution of the present application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0020] In order to solve the problem that the existing silent drain pipe cannot effectively isolate the noise generated during the drainage process, thereby affecting the use effect and silent experience, this example discloses an impact-resistant hollow wall PP silent drain pipe, which includes a drain pipe body 1 made of PP material.

[0021] To achieve good sound insulation effect of the drain pipe body 1, see Figure 1 In this embodiment, a plurality of sound insulation holes 2 are arranged in a circumferential array in the wall of the drain pipe body 1. Each sound insulation hole 2 is arranged along the axial direction of the drain pipe body 1. The sound insulation holes 2 form a hollow wall of the drain pipe body 1. The cavity structure formed by the sound insulation holes 2 achieves a sound insulation effect. For details, see Figure 1 In this example, the cross-section of the sound insulation hole 2 is serrated. As a result, after noise penetrates the pipe wall and enters the corresponding cavity of the sound insulation hole 2, it is continuously reflected within the serrated cavity, causing the noise energy to be rapidly consumed, thereby achieving the purpose of noise reduction. In this embodiment, the number of corners of the serrated sound insulation hole 2 is the number of teeth of the serrated sound insulation hole 2. Furthermore, in this example, a single serrated sound insulation hole 2 has no fewer than two teeth. This provides a longer reflection path for noise that penetrates the sound insulation hole 2, ensuring that the noise energy is effectively consumed, thereby achieving the purpose of improving the sound insulation effect.

[0022] In addition, in some other embodiments of the present invention, considering that the serrated sound insulation holes 2 can only realize the consumption of noise energy through the continuous reflection of sound in the cavity, thereby achieving the effect of reducing drainage noise, however, since the diameter and wall thickness of the drainage pipe body 1 are limited by the required specifications, the cavity volume and distribution length of the sound insulation holes 2 are limited, resulting in an upper limit to the sound insulation ability. In order to further improve the soundproofing effect of the drainage pipe body 1, in this embodiment, a micro-foaming agent is injected into each sound insulation hole 2 during the injection molding of the pipe body, thereby forming a micro-foaming sound insulation layer embedded in the sound insulation hole 2, the micro-foaming sound insulation layer includes a number of irregular small cavities, and the material is relatively large relative to the PP material of the drainage pipe body. It is relatively soft, so when the noise sound waves penetrate the corresponding drain pipe body wall and enter the sound insulation hole 2 and come into contact with the micro-foam sound insulation layer, part of the sound waves will be reflected back, thereby reducing the sound energy entering the outside of the drain pipe body wall. At the same time, the tiny bubbles inside the micro-foam sound insulation layer can absorb part of the sound wave energy and convert it into heat energy or other forms of energy, thereby reducing the propagation of the sound waves. Due to the porous structure of the micro-foam sound insulation layer, only a small part of the noise sound waves can penetrate, and part of the sound waves that penetrate the micro-foam sound insulation layer will be reflected when they encounter the serrated cavity wall of the sound insulation hole 2. Therefore, while the energy is attenuated, part of the sound energy re-enters the micro-foam sound insulation layer for further attenuation, thereby achieving the purpose of sound insulation.

[0023] In addition, in this embodiment, see Figure 1The pipe wall between the sound insulation hole 2 and the inner edge of the drain pipe body is the inner wall 11, and the pipe wall between the sound insulation hole 2 and the outer edge of the drain pipe body is the outer wall 12, and the thickness of the inner wall 11 is set to be less than the thickness of the outer wall 12, thereby improving the sound insulation effect of the drain pipe body 1 through the relatively thick outer wall 12. In addition, since the sound insulation hole 2 is serrated, after the sound waves are reflected to the cavity wall of the sound insulation hole 2 corresponding to the outer wall 12, basically all the reflection points of the sound waves are on the serrated tooth surface, and the tooth surface protrudes relative to the tooth tip toward the inside of the pipe, that is, the reflection points of the sound waves are all on the serrated surface except the tip points of the serrated teeth. The protruding serrated surface is equivalent to increasing the thickness of the outer wall 12, thereby improving the sound insulation effect of the pipe body.

[0024] See also Figure 1 When water flows through the drainage pipe body 1 and encounters a bend, a water hammer effect is generated, which in turn causes noise. Moreover, the silencing effect that can be achieved by relying on the pipe wall structure of the drainage pipe body 1 is limited. Therefore, in this embodiment, in order to reduce noise from the source of water flow, that is, the source of noise generation, a spiral water guide flange is provided at the inner edge of the pipe wall of the drainage pipe body 1. The spiral water guide flange causes the water in the drainage pipe body 1 to generate a vortex, reducing its potential energy at the pipe bend, thereby reducing the impact and vibration waves generated by the water hammer effect, thereby achieving the purpose of reducing noise.

[0025] Specifically, in this embodiment, considering that when the pipe length is long, the spiral water guide flange can only achieve a limited effect in reducing the potential energy of the water flow, and the noise generated by the impact and water hammer effect at the corner is still relatively large; for this reason, see Figure 1 In this example, the spiral water guide flange includes a forward spiral water guide flange 31 and a reverse spiral water guide flange 32, wherein the forward spiral water guide flange 31 and the reverse spiral water guide flange 32 are arranged alternately in sequence. Figure 1 When the water vortex formed by the forward spiral water guide flange 31 impacts the reverse spiral water guide flange 32 downward, part of the water will generate an upward reverse movement trend along the reverse spiral water guide flange 32 under the action of water inertia, while the other part of the water will continue to generate vortex downward along the reverse spiral water guide flange 32. When colliding with the next forward spiral water guide flange, part of the water will generate a reverse movement trend again. This reciprocating process achieves the purpose of reducing the potential energy of the water, thereby helping to reduce noise from the perspective of water flow.

[0026] Although some preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0027] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of the inventive concept. Thus, if such changes and modifications fall within the scope of the claims of this application and their equivalents, this application is intended to include such changes and modifications.

Claims

1. An impact-resistant hollow wall PP silent drainage pipe, characterized in that: The invention comprises a drainage pipe body, wherein a circumferential array of the pipe wall of the drainage pipe body is provided with a plurality of sound insulation holes arranged along the axial direction of the pipe body, the cross section of the sound insulation holes is correspondingly sawtooth-shaped, and a spiral water guide flange is provided on the inner edge of the pipe wall of the drainage pipe body.

2. The impact-resistant hollow-wall PP silent drainage pipe according to claim 1 is characterized in that: The number of teeth in the serrated cross-section corresponding to the sound insulation hole is no less than two.

3. The impact-resistant hollow-wall PP silent drain pipe according to claim 1, characterized in that: A micro-foamed sound insulation layer is embedded in the sound insulation hole.

4. The impact-resistant hollow-wall PP silent drainage pipe according to claim 1, characterized in that: The pipe wall between the sound insulation hole and the inner edge of the drain pipe body is the inner wall, and the pipe wall between the sound insulation hole and the outer edge of the drain pipe body is the outer wall. The thickness of the inner wall is smaller than the thickness of the outer wall.

5. The impact-resistant hollow-wall PP silent drainage pipe according to claim 1, characterized in that: The spiral water guide flange comprises a plurality of forward spiral water guide flanges and reverse spiral water guide flanges which are arranged alternately in sequence.

Images