Ultra-silence HDPE pipe

Abstract

The ultra-silence HDPE pipe comprises an inner pipe body and an outer pipe body, supporting connecting ribs are arranged between the inner pipe body and the outer pipe body in the circumferential direction at equal intervals, porous silence foam pads are filled in gaps among the inner pipe body, the outer pipe body and the supporting connecting ribs, and drainage plates parallel to the central axis of the inner pipe body are arranged on the inner wall of the inner pipe body in the circumferential direction at equal intervals. The inner wall of the inner pipe and the surface of the drainage plate are each provided with a mute coating, and the surface of the outer pipe is provided with a porous mute outer sleeve. The porous mute foam pad is arranged in the inner pipe, the porous mute outer sleeve is arranged outside the outer pipe, noise reduction is conducted through a porous structure, outward transmission of internal noise is reduced, and the mute effect is improved; a drainage plate is arranged in the inner pipe, and a mute coating with a more compact and smoother structure is arranged, so that noise is reduced fundamentally; the drainage plate in the vertical pipeline can increase the wall-hanging guiding effect of water flow, and large noise caused by impact due to direct falling is reduced; and the mute effect is further improved on the basis of the existing double-layer structure.

Description

Technical Field

[0001] This utility model relates to the field of drainage pipe technology, specifically to an ultra-quiet HDPE pipe. Background Technology

[0002] The noise from drain pipes mainly comes from the friction and impact of the water flow against the inner wall of the pipe, creating the sound of water. In curved and right-angled pipes, the impact sound is louder; in horizontal and inclined pipes, the sound of water tumbling due to friction is louder; and in vertical pipes, the sound of water falling and impacting is louder. Silent drain pipes are very popular because they reduce water noise.

[0003] HDPE (High Density Polyethylene) silent pipes are high-performance drainage pipes. Currently, HDPE silent pipes on the market use a double-layer structure to reduce the transmission of internal noise to the outside, which has a certain effect on noise isolation. However, with the increase in building floors, water consumption, and residents' increasing requirements for quietness, it is necessary to propose a silent pipe with better noise reduction effect. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an ultra-quiet HDPE pipe to further improve the noise reduction effect.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] An ultra-quiet HDPE pipe includes an inner pipe and an outer pipe. Supporting connecting ribs are equidistantly arranged along the circumference between the inner pipe and the outer pipe. The gap between the inner pipe, the outer pipe and the supporting connecting ribs is filled with a porous sound-silencing foam pad. Drainage plates parallel to the central axis of the inner pipe are equidistantly arranged along the circumference on the inner wall of the inner pipe. The inner wall of the inner pipe and the surface of the drainage plates are both provided with a sound-silencing coating. The outer pipe is an outer corrugated pipe, and the surface of the outer pipe is provided with a porous sound-silencing outer sleeve.

[0007] Preferably, the inner tube, outer tube, supporting connecting ribs, and drainage plate are an integrated HDPE structure.

[0008] Preferably, the number of supporting connecting ribs is twice the number of drainage plates.

[0009] Preferably, the supporting connecting rib and the drainage plate are both arranged radially along the inner tube, and the positions of the drainage plate and the supporting connecting rib correspond.

[0010] Preferably, the wall thickness of the inner tube is less than that of the outer tube, and the radial width of the supporting connecting rib on the inner tube is not less than the wall thickness of the inner tube.

[0011] Preferably, the inner diameter of the inner tube is four to five times the radial width of the inner tube's internal drainage plate.

[0012] Preferably, the sound-silencing coating is a high-density PP coating.

[0013] Preferably, the porous sound-absorbing outer sleeve is a porous foamed silicone sleeve whose inner wall shape is adapted to the outer wall shape of the outer tube.

[0014] Preferably, the porous sound-absorbing foam pad is a polyurethane porous foam pad.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention features a porous sound-absorbing foam pad inside the inner tube and a porous sound-absorbing outer sleeve on the outer tube. The porous structure reduces noise transmission from the inside to the outside, thus improving the soundproofing effect. A flow guide plate is installed inside the inner tube, along with a denser and smoother sound-absorbing coating, fundamentally reducing noise generation. The flow guide plate increases the inner wall area of ​​the inner tube, and in vertical pipes, it enhances the water flow guidance effect, reducing the impact noise caused by direct descent. Therefore, this invention further improves the soundproofing effect based on the existing double-layer structure. Attached Figure Description

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

[0018] Figure 2 This is an axial sectional view of the present invention.

[0019] In the diagram: 1. Inner tube; 2. Outer tube; 3. Supporting connecting rib; 4. Porous sound-absorbing foam pad; 5. Drainage plate; 6. Sound-absorbing coating; 7. Porous sound-absorbing outer sleeve. Detailed Implementation

[0020] 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.

[0021] like Figure 1-2 As shown, this utility model provides a technical solution: an ultra-quiet HDPE pipe, including an inner pipe 1 and an outer pipe 2, with supporting connecting ribs 3 equidistantly arranged circumferentially between the inner pipe 1 and the outer pipe 2, and the gap between the inner pipe 1, the outer pipe 2 and the supporting connecting ribs 3 filled with a porous sound-silencing foam pad 4, and a drainage plate 5 parallel to the central axis of the inner pipe 1 equidistantly arranged circumferentially on the inner wall of the inner pipe 1.

[0022] The inner tube 1, outer tube 2, supporting connecting ribs 3 and the flow guide plate 5 are an integrated HDPE structure, which facilitates co-extrusion production, has good overall performance, and high structural strength. The number of supporting connecting ribs 3 is twice the number of flow guide plates 5, ensuring that the inner tube 1 and outer tube 2 have sufficient connection structural strength.

[0023] Both the supporting connecting rib 3 and the diversion plate 5 are arranged radially along the inner tube 1, and the positions of the diversion plate 5 and the supporting connecting rib 3 correspond to each other, which facilitates extrusion production and has high structural strength. The inner wall of the inner tube 1 and the surface of the diversion plate 5 are provided with a sound-silencing coating 6. The sound-silencing coating 6 is a high-density PP coating with a smoothness higher than HDPE, which makes the water flow resistance small and less prone to noise, thus achieving a silent effect in essence.

[0024] The outer tube 2 is an outer corrugated tube, and the surface of the outer tube 2 is provided with a porous sound-absorbing outer sleeve 7. The porous sound-absorbing outer sleeve 7 is a porous foamed silicone sleeve whose inner wall is adapted to the shape of the outer wall of the outer tube 2. The porous sound-absorbing foam pad 4 is a polyurethane porous foam pad, which is used to insulate internal noise and reduce its transmission to the outside.

[0025] The wall thickness of the inner tube 1 is less than that of the outer tube 2. The radial width of the supporting connecting rib 3 on the inner tube 1 is not less than the wall thickness of the inner tube 1. The inner diameter of the inner tube 1 is four to five times the radial width of the inner drainage plate 5, so that the drainage plate 5 has a sufficient drainage width.

[0026] Working principle:

[0027] Based on the double-layer structure of inner pipe 1 and outer pipe 2, a porous sound-absorbing foam pad 4 is installed inside, and a porous sound-absorbing outer sleeve 7 is installed outside. The porous sound-absorbing foam pad 4 is a polyurethane porous foam pad, and the porous sound-absorbing outer sleeve 7 is a porous foamed silicone sleeve. The porous structure is used to absorb sound and reduce the transmission of internal noise to the outside, thus improving the sound-absorbing effect. A flow-draining plate 5 is installed inside the inner pipe 1, and a sound-absorbing coating 6 is applied to the inner wall of the inner pipe 1 and the surface of the flow-draining plate 5. The high-density PP sound-absorbing coating 6 is denser and smoother than the HDPE structure, and has less resistance to water flow, fundamentally reducing the generation of noise. The flow-draining plate 5 increases the inner wall area of ​​the inner pipe 1. The flow-draining plate 5 in the vertical pipe can increase the water flow wall guidance effect, prompting more water to flow downward along the inner wall of the inner pipe 1 and the surface of the flow-draining plate 5, reducing the impact noise caused by direct falling. The sound-absorbing effect is further improved on the basis of the existing double-layer structure.

Claims

1. A super-silent HDPE pipe comprising an inner pipe (1) and an outer pipe (2), characterized in that: The inner tube (1) and the outer tube (2) are circumferentially equidistantly provided with support connecting ribs (3), the gap between the inner tube (1), the outer tube (2) and the support connecting ribs (3) is filled with a porous soundproof foam pad (4), the inner wall of the inner tube (1) is circumferentially equidistantly provided with drainage plates (5) parallel to the axis of the inner tube (1), the inner wall of the inner tube (1) and the surface of the drainage plates (5) are provided with a soundproof coating (6), the outer tube (2) is an outer corrugated tube, and the surface of the outer tube (2) is provided with a porous soundproof sleeve (7).

2. A silent HDPE pipe according to claim 1, characterized in that: The inner tube (1), the outer tube (2), the support connecting ribs (3) and the drainage plates (5) are an integral structure of HDPE.

3. The ultra-quiet HDPE pipe according to claim 1, characterized in that: The number of the support connecting ribs (3) is twice the number of the drainage plates (5).

4. The ultra-quiet HDPE pipe according to claim 1, characterized in that: The support connecting ribs (3) and the drainage plates (5) are both arranged along the radial direction of the inner tube (1), and the positions of the drainage plates (5) correspond to those of the support connecting ribs (3).

5. The ultra-quiet HDPE pipe according to claim 1, characterized in that: The wall thickness of the inner tube (1) is smaller than that of the outer tube (2), and the radial width of the support connecting ribs (3) on the inner tube (1) is not less than the wall thickness of the inner tube (1).

6. The ultra-quiet HDPE pipe according to claim 1, characterized in that: The inner diameter of the inner tube (1) is four to five times the radial width of the drainage plates (5) inside the inner tube (1).

7. The ultra-quiet HDPE pipe according to claim 1, characterized in that: The soundproof coating (6) is a high-density PP coating.

8. The ultra-quiet HDPE pipe according to claim 1, characterized in that: The porous soundproof sleeve (7) is a porous foamed silica gel sleeve with an inner wall shape matching that of the outer wall of the outer tube (2).

9. The ultra-quiet HDPE pipe according to claim 1, characterized in that: The porous soundproof foam pad (4) is a polyurethane porous foam pad.

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