Corrosion-resistant non-fouling PPR pipe

By installing anti-corrosion layers, sound insulation components, and protective components inside PPR pipes, the noise reduction problem of PPR pipes has been solved, achieving noise reduction, prevention of corrosion and scaling, and improving the quietness and service life of the pipeline.

CN224352634UActive Publication Date: 2026-06-12HEBEI SHENTONG PLASTIC IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEBEI SHENTONG PLASTIC IND CO LTD
Filing Date
2025-06-25
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing PPR pipes lack effective noise reduction capabilities during use, and are prone to generating noise interference when liquid flows. The noise reduction performance of existing solutions needs to be improved.

Method used

PPR pipes are equipped with an anti-corrosion layer, sound insulation components, and protective components. The anti-corrosion layer isolates corrosive substances, the sound insulation components reduce noise through sound insulation rings, buffer rings, and sound-absorbing panels, and the protective components maintain the stability of the pipeline through a moisture-proof layer and a heat insulation layer.

Benefits of technology

It effectively reduces noise inside the pipe, improves the quietness of the operating environment, prevents corrosion and scaling, and extends the service life of the pipe.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides a kind of corrosion-resistant non-fouling PPR pipe, it is related to installation pipe material technical field, including pipe body, the pipe body includes outer tube and inner tube, one end of the outer tube is fixed with internal thread sleeve, the other end of the outer tube is fixed with external thread sleeve, the external thread sleeve can be threadedly connected in internal thread sleeve, external thread sleeve has outer thread structure and internal thread sleeve cooperation uses.The corrosion-resistant non-fouling PPR pipe water flow when flowing through inner tube due to with the vibration of the wall friction, impact and turbulence of inner tube, to cause noise, by buffer washer can slow down water flow impact, to reduce the effect of noise, sound insulation chamber is used to isolate noise, sound absorption board in sound insulation chamber is used to absorb the noise generated by water flow vibration, annular groove forms sound wave turbulence path on sound absorption board, to extend sound wave propagation path, improve sound absorption effect, to effectively reduce the noise in pipe, improve the quietness of use environment.
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Description

Technical Field

[0001] This utility model relates to an installation pipe, specifically a corrosion-resistant and scale-free PPR pipe, belonging to the field of installation pipe technology. Background Technology

[0002] PPR pipe, short for polypropylene random copolymer pipe, is a new type of pipe material widely used in water supply, HVAC, and gas applications. PPR pipes offer advantages such as high temperature resistance, corrosion resistance, high pressure resistance, and long service life. They are typically connected using heat fusion, ensuring a tight seal and robust construction. Due to their superior performance, PPR pipes have gradually replaced traditional metal pipes, becoming the ideal choice for modern building and industrial piping.

[0003] Currently, common PPR pipes generally lack noise reduction capabilities during use, easily generating flow noise when liquids flow through them, thus causing noise interference. Although some solutions have attempted to wrap sound-absorbing cotton around the outside of PPR pipes, their noise reduction performance still needs improvement. Therefore, this paper proposes a corrosion-resistant and scale-free PPR pipe. Summary of the Invention

[0004] This invention proposes a corrosion-resistant and scale-free PPR pipe that can effectively reduce internal noise and improve the quietness of the operating environment.

[0005] This utility model is achieved through the following technical solution: a corrosion-resistant and scale-free PPR pipe, comprising a pipe body, the pipe body comprising an outer pipe and an inner pipe, one end of the outer pipe being fixed with an internal threaded sleeve, the other end of the outer pipe being fixed with an external threaded sleeve, the external threaded sleeve being threadedly connected to the internal threaded sleeve, the external threaded sleeve having an external thread structure and being used in conjunction with the internal threaded sleeve.

[0006] The inner tube is equipped with an anti-corrosion layer that covers the inside of the inner tube. This layer is used to isolate corrosive substances from contact with the inner tube. The surface of the anti-corrosion layer is smooth, which can reduce the adhesion and deposition of minerals (such as calcium and magnesium ions) in the water and reduce the probability of scaling.

[0007] It also includes a sound insulation component, which is disposed between the outer tube and the inner tube. The sound insulation component includes multiple sound insulation rings, and a buffer ring made of elastic material is fixed on the sound insulation ring. The sound insulation ring is fixed on the outside of the inner tube, and the buffer ring is fixed on the inside of the outer tube. A sound insulation chamber is formed between the multiple sound insulation rings and the buffer ring. A sound absorption plate is disposed in the sound insulation chamber. The sound absorption plate is fixed on the inside of the outer tube. The sound absorption plate has evenly distributed annular grooves, which form a sound wave turbulence path on the sound absorption plate to extend the sound wave propagation path and improve the sound absorption effect.

[0008] It also includes protective components, which are installed on the outside of the outer pipe. The protective components include a moisture-proof layer, which can prevent moisture and water from entering, especially in humid environments or underground environments. It isolates external moisture from contacting the outer pipe, keeps the inside of the outer pipe dry, and ensures the normal operation and service life of the pipe components.

[0009] An insulation layer is fixed inside the moisture-proof layer. The insulation layer is fixed to the outside of the outer pipe and wraps around the outside of the outer pipe. This reduces the heat exchange between the water inside the outer pipe and the external environment, maintains a stable water temperature, and prevents the water from condensing, vaporizing, or changing its properties due to temperature changes. In cold regions, it can prevent the outer and inner pipes from freezing and cracking.

[0010] This utility model provides a corrosion-resistant and scale-free PPR pipe, which has the following beneficial effects:

[0011] When water flows through the inner pipe of this corrosion-resistant, scale-free PPR pipe, vibrations are generated due to friction, impact, and turbulence with the pipe wall, which can cause noise. The buffer ring can slow down the water flow impact, thereby reducing noise. The sound insulation chamber is used to isolate noise, and the sound-absorbing panels inside the sound insulation chamber absorb the noise generated by the water flow vibration. The annular groove on the sound-absorbing panel forms a sound wave turbulence path, thereby extending the sound wave propagation path and improving the sound absorption effect. This can effectively reduce the noise inside the pipe and improve the quietness of the operating environment. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the internal structure of the moisture-proof layer and the heat-insulating layer of this utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the outer tube and inner tube of this utility model.

[0015] Explanation of reference numerals in the attached figures

[0016] 1. Pipe body; 101. Outer pipe; 102. Inner pipe; 103. Internal threaded sleeve; 104. External threaded sleeve; 105. Anti-corrosion coating;

[0017] 2. Sound insulation components; 201. Sound insulation ring; 202. Buffer ring; 203. Sound insulation chamber; 204. Sound absorption panel; 205. Annular groove;

[0018] 3. Protective components; 301. Moisture-proof layer; 302. Thermal insulation layer. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0020] Please see Figures 1-3 The present invention proposes the following implementation scheme: a corrosion-resistant and scale-free PPR pipe, including a pipe body 1, the pipe body 1 including an outer pipe 101 and an inner pipe 102, and an inner threaded sleeve 103 fixed at one end of the outer pipe 101.

[0021] The other end of the outer tube 101 is fixed with an external threaded sleeve 104, which can be threaded into the inner threaded sleeve 103. The external threaded sleeve 104 has an external thread structure and is used in conjunction with the inner threaded sleeve 103.

[0022] An anti-corrosion layer 105 is provided inside the inner tube 102. The anti-corrosion layer 105 covers the inside of the inner tube 102 and is used to isolate corrosive substances from contact with the inner tube 102. The surface of the anti-corrosion layer 105 is smooth, which can reduce the adhesion and deposition of minerals such as calcium and magnesium ions in the water and reduce the probability of scaling.

[0023] Please refer to this carefully. Figure 3 It also includes a sound insulation component 2, which is disposed between the outer tube 101 and the inner tube 102. The sound insulation component 2 includes multiple sound insulation rings 201, and a buffer ring 202 is fixed on the sound insulation ring 201. The buffer ring 202 is made of elastic material. The sound insulation ring 201 is fixed on the outside of the inner tube 102, and the buffer ring 202 is fixed on the inside of the outer tube 101.

[0024] Please refer to this carefully. Figure 3 A soundproof chamber 203 is formed between multiple soundproof rings 201 and buffer rings 202. A sound-absorbing plate 204 is installed in the soundproof chamber 203. The sound-absorbing plate 204 is fixed to the inner side of the outer tube 101. The sound-absorbing plate 204 has evenly distributed annular grooves 205. The annular grooves 205 form a sound wave turbulence path on the sound-absorbing plate 204 to extend the sound wave propagation path and improve the sound absorption effect.

[0025] Please refer to this carefully. Figure 1 and Figure 2 It also includes a protective component 3, which is disposed on the outside of the outer pipe 101. The protective component 3 includes a moisture-proof layer 301, which can prevent moisture and water from entering, especially in humid environments or underground environments, to isolate external moisture from contact with the outer pipe 101, keep the inside of the outer pipe 101 dry, and ensure the normal operation and service life of the pipe components.

[0026] Please refer to this carefully. Figure 1and Figure 2 A heat insulation layer 302 is fixed inside the moisture-proof layer 301. The heat insulation layer 302 is fixed to the outside of the outer pipe 101. The heat insulation layer 302 wraps around the outside of the outer pipe 101, reducing the heat exchange between the water inside the outer pipe 101 and the external environment, maintaining a stable water temperature, and preventing the water from condensing, vaporizing or changing its properties due to temperature changes. In cold regions, it can prevent the outer pipe 101 and the inner pipe 102 from freezing and cracking.

[0027] Working principle: When water flows through the inner pipe 102, the water flow vibrates due to friction, impact and turbulence with the pipe wall of the inner pipe 102, which causes noise. The vibration is transmitted to the buffer ring 202 through the sound insulation ring 201. The buffer ring 202 undergoes elastic deformation, which slows down the impact of the water flow and reduces the noise.

[0028] The soundproof chamber 203 is used to isolate noise, and the sound-absorbing plate 204 inside the soundproof chamber 203 is used to absorb the noise generated by water flow vibration. The annular groove 205 forms a sound wave turbulence path on the sound-absorbing plate 204, thereby extending the sound wave propagation path and improving the sound absorption effect. This utility model can effectively reduce the noise inside the pipe and improve the quietness of the use environment.

[0029] 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 in the specification 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 the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant and scale-free PPR pipe, comprising a pipe body (1), characterized in that: The tube body (1) includes an outer tube (101) and an inner tube (102); It also includes a sound insulation component (2), which is disposed between the outer tube (101) and the inner tube (102); The sound insulation component (2) includes multiple sound insulation rings (201), and a buffer ring (202) is fixed on the sound insulation ring (201). The sound insulation ring (201) is fixed on the outside of the inner tube (102), and the buffer ring (202) is fixed on the inside of the outer tube (101). A sound insulation chamber (203) is formed between the multiple sound insulation rings (201) and the buffer ring (202).

2. The corrosion-resistant and scale-free PPR pipe according to claim 1, characterized in that: The soundproof chamber (203) is provided with a sound-absorbing panel (204), which is fixed to the inside of the outer tube (101).

3. The corrosion-resistant and scale-free PPR pipe according to claim 2, characterized in that: The sound-absorbing plate (204) has evenly distributed annular grooves (205).

4. The corrosion-resistant and scale-free PPR pipe according to claim 1, characterized in that: It also includes a protective component (3), which is disposed on the outside of the outer tube (101). The protective component (3) includes a moisture-proof layer (301), and an insulation layer (302) is fixed inside the moisture-proof layer (301). The insulation layer (302) is fixed on the outside of the outer tube (101).

5. The corrosion-resistant and scale-free PPR pipe according to claim 1, characterized in that: One end of the outer tube (101) is fixed with an internal threaded sleeve (103), and the other end of the outer tube (101) is fixed with an external threaded sleeve (104). The external threaded sleeve (104) can be threaded into the internal threaded sleeve (103).

6. The corrosion-resistant and scale-free PPR pipe according to claim 1, characterized in that: The inner tube (102) is provided with an anti-corrosion layer (105).