MASHDPE double-crest drain pipe

Abstract

The utility model discloses an MASHDPE double-crest drain pipe which comprises a pipe body formed by spirally winding MASHDPE winding monomers and a polytetrafluoroethylene lining pipe, and an integrally-machined spiral plate is arranged on the periphery of the polytetrafluoroethylene lining pipe. Each MASHDPE winding single body comprises a base band, half wave crests and full wave crests, the half wave crests are symmetrically arranged on the two sides of the base band, the full wave crests are arranged in the middle, the outer sides of the half wave crests are sealed through vertical connecting plates, and the height of the half wave crests is larger than that of the full wave crests; the periphery of the polytetrafluoroethylene lining pipe and the surface of the spiral plate are coated with high-viscosity resin layers; the MASHDPE winding monomers are spirally wound and bonded in the adjacent spiral plates to form a pipe body; an etching layer is processed on the inner wall of the polytetrafluoroethylene lining pipe, and a nano silicon dioxide layer is attached to the surface of the etching layer. According to the utility model, the friction coefficient of the inner wall of the pipeline to fluid is reduced, the corrosion resistance is stronger, the adhesion capability of substances is reduced due to high lubrication and non-stickiness, a fermentation hotbed of bacteria is prevented from being formed due to adhesion on the pipeline, and the blockage condition of the pipeline is also avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pipes, in particular to a MASHDPE double-peak drainage pipe. Background Art

[0002] Most drainage pipes are buried underground, so to increase their hoop stiffness, they often adopt a double-peak structure. Currently, the most common type of drainage pipe is HDPE. However, due to the relatively low friction coefficient of HDPE, organic matter easily accumulates and adheres to the pipe walls during underground sewage transportation, creating a breeding ground for bacteria. This not only worsens water pollution but also damages the pipe. If the pipe walls are small, sediment can easily cause pipe blockage. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a MASHDPE double-peak drainage pipe to solve the technical problems in the above-mentioned background technology.

[0004] The technical solution of the utility model is:

[0005] A MASHDPE double-peak drainage pipe comprises a pipe body formed by spirally winding a MASHDPE winding monomer and a polytetrafluoroethylene (PTFE) liner pipe, wherein the outer periphery of the polytetrafluoroethylene (PTFE) liner pipe has an integrally processed spiral plate; the MASHDPE winding monomer comprises a base band, a half-wave peak and a full-wave peak, wherein the half-wave peaks are symmetrically arranged on both sides of the base band, and the full-wave peak is arranged in the middle, wherein the outer side of the half-wave peak is closed by a vertical connecting plate, and the height of the half-wave peak is greater than the full-wave peak; the outer periphery of the polytetrafluoroethylene (PTFE) liner pipe and the surface of the spiral plate are coated with a high-viscosity resin layer; the MASHDPE winding monomers are spirally wound and bonded in adjacent spiral plates to form a pipe body; the inner wall of the polytetrafluoroethylene (PTFE) liner pipe is processed into an etching layer, and the surface of the etching layer is attached with a nano-silicon dioxide layer.

[0006] Furthermore, the half-wave crest has a quarter-ellipse profile, and the full-wave crest has a semicircular profile.

[0007] Furthermore, the etching layer is formed by chemically etching the inner wall surface of the polytetrafluoroethylene lined tube using fluorine gas or hydrogen fluoride.

[0008] Furthermore, the nano-silicon dioxide layer is a liquid phase deposition layer.

[0009] The utility model is beneficial in that:

[0010] The present invention adds a polytetrafluoroethylene (PTFE) inner liner, with an etched layer machined into the inner wall, and a nano-silicon dioxide layer attached to the surface of the etched layer. This addition not only reduces the friction coefficient of the inner wall of the pipe to the fluid, and its corrosion resistance can withstand complex sewage components, but also its high lubricity and non-stickiness reduce the adhesion of substances, preventing adhesion to the pipe, thereby forming a breeding ground for bacteria and preventing pipe blockage. In order to solve the problem of poor welding performance, a spiral plate is added to the outer periphery of the polytetrafluoroethylene (PTFE) inner liner, and then bonded by coating it with a high-viscosity resin layer. This increases the bonding area, and secondly, this structure ensures the anti-peeling properties of the polytetrafluoroethylene inner liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0012] Figure 2 This is a partial cross-sectional view of the pipe wall of the utility model.

[0013] In the figure: 1-MASHDPE winding monomer, 1a-tube body, 11-base tape, 12-half-wave peak, 121-connecting plate, 13-full-wave peak, 2-polytetrafluoroethylene lined tube, 21-spiral plate, 3-etching layer, 4-nanosilicon dioxide layer. DETAILED DESCRIPTION

[0014] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0015] like Figure 1-2 As shown:

[0016] A MASHDPE double-peak drainage pipe comprises a pipe body 1a formed by spirally winding a MASHDPE winding monomer 1 and a polytetrafluoroethylene (PTFE) liner pipe 2, the outer periphery of the polytetrafluoroethylene (PTFE) liner pipe 2 having an integrally machined spiral plate 21; the MASHDPE winding monomer 1 comprises a base band 11, a half-wave peak 12 and a full-wave peak 13, the half-wave peaks 12 are symmetrically arranged on both sides of the base band 11, and the full-wave peak 13 is arranged in the middle, wherein the outer side of the half-wave peak 12 is closed by a vertical connecting plate 121, and the height of the half-wave peak 12 is greater than the full-wave peak 13; the outer periphery of the polytetrafluoroethylene (PTFE) liner pipe 2 and the surface of the spiral plate 21 are coated with a high-viscosity resin layer; the MASHDPE winding monomer 1 is spirally wound and bonded in adjacent spiral plates 21 to form a pipe body; the inner wall of the polytetrafluoroethylene (PTFE) liner pipe 2 is machined to form an etching layer 3, and the surface of the etching layer 3 is attached with a nano-silicon dioxide layer 4.

[0017] The MASHDPE winding monomer 1 in the present invention adopts HDPE (high-density polyethylene) material processed by magic angle spinning (MAS) process, which is convenient for subsequent spectral detection and flaw detection to ensure the reliability of the drainage pipe after being buried underground; the double-peak design can increase the ring stiffness of the pipe.

[0018] The improvement lies in the addition of a polytetrafluoroethylene liner tube 2. Polytetrafluoroethylene is a polymer compound formed by the polymerization of tetrafluoroethylene. It has excellent chemical stability, corrosion resistance, sealing, high lubrication and non-stickiness, good anti-aging resistance, and very good wear resistance. This is because the friction between its molecular chains is small, and during the friction process, its molecular chains can form a lubricating film on the surface, thereby reducing the friction coefficient. It is one of the materials with the lowest friction coefficient among known solid materials.

[0019] Its increase can not only reduce the friction coefficient of the inner wall of the pipe to the fluid, its corrosion resistance can cope with the complex sewage composition, and its high lubricity and non-stickiness reduce the adhesion ability of the material, avoiding adhesion on the pipe to form a breeding ground for bacteria and avoid blockage of the pipe.

[0020] Although polytetrafluoroethylene has a low hardness, it is only used as an inner lining pipe here. The outside has a high-hardness pipe body formed by the MASHDPE wrapped monomer 1. The wrapped pipe body has a double-peak reinforcement structure, which effectively avoids the compression deformation of the inner polytetrafluoroethylene lining pipe 2.

[0021] However, due to the high chemical stability of polytetrafluoroethylene and the strong interaction force between molecular chains, it is difficult to connect its molecular chains with each other using conventional welding methods. This means that it is difficult to complete hot-melt welding of the MASHDPE winding monomer 1 with the polytetrafluoroethylene lined tube 2 even when heated and wound. Therefore, a spiral plate 21 is added to the outer periphery of the polytetrafluoroethylene lined tube 2, and then the tube is bonded together by coating a high-viscosity resin layer (thin layer structure, not shown). On the one hand, this increases the bonding area, and secondly, this structure ensures the peeling resistance of the polytetrafluoroethylene lined tube 2.

[0022] As an improved solution, since the half-wave peak 12 has a greater height, if it is a circular profile, the spacing is too large, so the half-wave peak 12 adopts a quarter-elliptical profile, and the full-wave peak 13 has a smaller height and adopts a semicircular profile.

[0023] In order to improve the hydrophobicity and prevent microorganisms and organic matter from adhering to the inner wall of the pipeline, an etching layer 3 is processed on the inner wall of the polytetrafluoroethylene lined tube 2. The etching layer 3 is formed by chemically etching the inner wall surface of the polytetrafluoroethylene lined tube 2 with fluorine gas or hydrogen fluoride. Through chemical etching, a microscopic rough structure is formed on the inner wall surface of the polytetrafluoroethylene lined tube 2, thereby increasing the hydrophobicity of the surface.

[0024] At the same time, a nano-silica layer 4 is attached to the surface of the etching layer 3. Liquid phase deposition is performed through a sol-gel method to form a liquid phase deposition layer of nano-silica. Specifically, a nano-silica precursor (such as tetraethyl orthosilicate) is first dissolved in a solvent, and an appropriate amount of water and a catalyst are added. A hydrolysis and polycondensation reaction is carried out under certain temperature and stirring conditions to form a stable sol. The sol is then evenly coated on the surface of the etching layer 3 by spraying. After post-processing processes such as drying and heat treatment, the solvent in the sol evaporates, and the nano-silica particles further polycondense to form a coating. By compounding with the etching layer 3 on the surface of the polytetrafluoroethylene, the overall hydrophobicity is enhanced.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A MASHDPE double-peak drainage pipe, characterized by: The invention comprises a tube body formed by spirally winding a MASHDPE winding monomer and a polytetrafluoroethylene (PTFE) lined tube, wherein the outer periphery of the polytetrafluoroethylene (PTFE) lined tube has an integrally processed spiral plate; the MASHDPE winding monomer comprises a base band, a half-wave peak and a full-wave peak, wherein the half-wave peaks are symmetrically arranged on both sides of the base band, and the full-wave peaks are arranged in the middle, wherein the outer side of the half-wave peaks is closed by a vertical connecting plate, and the height of the half-wave peaks is greater than that of the full-wave peaks; the outer periphery of the polytetrafluoroethylene (PTFE) lined tube and the surface of the spiral plate are coated with a high-viscosity resin layer; the MASHDPE winding monomers are spirally wound and bonded in adjacent spiral plates to form a tube body; the inner wall of the polytetrafluoroethylene (PTFE) lined tube is processed into an etching layer, and the surface of the etching layer is attached with a nano-silicon dioxide layer.

2. The MASHDPE double-peak drainage pipe according to claim 1, characterized in that: The half-wave peak has a quarter-ellipse outline, and the full-wave peak has a semicircular outline.

3. The MASHDPE double-peak drainage pipe according to claim 1, characterized in that: The etching layer is formed by chemically etching the inner wall surface of the polytetrafluoroethylene lined tube using fluorine gas or hydrogen fluoride.

4. The MASHDPE double-peak drainage pipe according to claim 1, characterized in that: The nano silicon dioxide layer is a liquid phase deposition layer.

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