Fiber reinforced composite sewer pipe with corrosion protection

Abstract

This utility model discloses a fiber-reinforced composite sewage pipe with an anti-corrosion layer, including a sewage pipe body made of polyethylene. The sewage pipe body is composed of an inner base layer and an outer base layer, with a reinforcing layer between the inner and outer base layers. An anti-corrosion layer is provided on the inner wall of the inner base layer, and an outer protective layer is provided on the outer wall of the outer base layer. The anti-corrosion layer made of vinyl ester resin can prevent corrosion of the inner wall of the sewage pipe body, avoiding erosion by acids, alkalis, microorganisms, and chemicals. The mesh reinforcing layer made of glass fiber can ensure the ring stiffness and axial tensile strength of the pipe. The outer protective layer, made of polyester resin and chopped fibers, can protect the pipe body from the influence of the external environment and effectively improve the mechanical properties and durability of the outer layer of the sewage pipe.

Description

Technical Field

[0001] This utility model relates to the field of sewage pipe technology, specifically a fiber-reinforced composite sewage pipe with an anti-corrosion layer. Background Technology

[0002] Sewage pipes are pipeline systems used to collect and transport domestic sewage, industrial wastewater, and rainwater, and are an important component of urban infrastructure and drainage projects. Their design, material selection, installation, and maintenance directly affect drainage efficiency and environmental safety. Previously, sewage pipes were generally made of cast cement. These pipes were heavy, difficult to transport in large quantities, and required large equipment for installation, making them extremely inconvenient. Therefore, PE plastic sewage pipes are increasingly used and have become an important part of modern urban sewage discharge systems.

[0003] However, PE plastic sewage pipes have poor pressure resistance. With urban development, the construction of new buildings, large commercial plazas, and other heavy structures is increasing, putting greater pressure on the urban surface. Since sewage pipes are buried underground, they are prone to deformation under this pressure. Furthermore, the inner walls of sewage pipes are constantly coated with corrosive substances such as acids, alkalis, microorganisms, and chemicals, making them susceptible to corrosion and damage. Therefore, a fiber-reinforced composite sewage pipe with an anti-corrosion layer has been proposed. Utility Model Content

[0004] The purpose of this invention is to provide a fiber-reinforced composite sewage pipe with an anti-corrosion layer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fiber-reinforced composite sewage pipe with an anti-corrosion layer, comprising a sewage pipe body made of polyethylene, the sewage pipe body being composed of an inner base layer and an outer base layer, the outer base layer being located outside the inner base layer, a reinforcing layer being provided between the inner base layer and the outer base layer, an anti-corrosion layer being provided on the inner wall of the inner base layer, and an outer protective layer being provided on the outer wall of the outer base layer.

[0006] As a further preferred embodiment of this technical solution, the reinforcing layer is made of glass fiber.

[0007] As a further preferred embodiment of this technical solution, the reinforcing layer has a mesh structure.

[0008] As a further preferred embodiment of this technical solution, the anti-corrosion layer is made of vinyl ester resin.

[0009] As a further preferred embodiment of this technical solution, a glass fiber mat is provided on the inner wall of the anti-corrosion layer.

[0010] As a further preferred embodiment of this technical solution, the outer protective layer is made of polyester resin.

[0011] As a further preferred embodiment of this technical solution, the outer protective layer is composited with short-cut fibers.

[0012] This utility model provides a fiber-reinforced composite sewage pipe with an anti-corrosion layer, which has the following beneficial effects:

[0013] This invention utilizes a vinyl ester resin anti-corrosion layer to protect the inner wall of the sewage pipe from corrosion, preventing it from being eroded by acids, alkalis, microorganisms, and chemicals. A fiberglass mesh reinforcement layer ensures the pipe's ring stiffness and axial tensile strength. An outer protective layer, made of polyester resin and chopped fiber composite, protects the pipe from external environmental influences such as corrosive substances in the soil, UV aging, and mechanical damage. Simultaneously, it effectively improves the mechanical properties and durability of the sewage pipe's outer layer, enabling it to withstand external loads such as soil friction and impact in buried environments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a partially enlarged schematic diagram of the overall structure of this utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the overall structure of this utility model;

[0017] In the diagram: 1. Sewage pipe body; 2. Inner base layer of the pipe; 3. Outer base layer of the pipe; 4. Anti-corrosion layer; 5. Outer protective layer; 6. Reinforcing layer; 7. Fiberglass mat; 8. Chopped fibers. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] This utility model provides a technical solution: such as Figures 1 to 3 As shown in this embodiment, a fiber-reinforced composite sewage pipe with an anti-corrosion layer includes a sewage pipe body 1. The sewage pipe body 1 is made of polyethylene. The sewage pipe body 1 is composed of an inner base layer 2 and an outer base layer 3. The outer base layer 3 is located outside the inner base layer 2. A reinforcing layer 6 is provided between the inner base layer 2 and the outer base layer 3. An anti-corrosion layer 4 is provided on the inner wall of the inner base layer 2, and an outer protective layer 5 is provided on the outer wall of the outer base layer 3.

[0020] Among them, the reinforcing layer 6 is made of glass fiber and has a mesh structure.

[0021] The pultrusion molding process can be used, and the installation is carried out simultaneously with the inner base layer 2 and the outer base layer 3 of the pipe. The resin-impregnated fiber mesh is pulled into the heating mold and cured under pressure and temperature. It is then combined with the inner and outer layers of the pipe to form a dense reinforcing layer, ensuring the ring stiffness and axial tensile strength of the pipe.

[0022] Among them, the anti-corrosion layer 4 is made of vinyl ester resin, which has good corrosion resistance and can resist the erosion of acids, alkalis, microorganisms and chemicals.

[0023] Among them, fiberglass mat 7 is installed on the inner wall of the anti-corrosion layer 4.

[0024] The fiberglass mat 7 can enhance the strength of the inner side of the sewage pipe body 1, while ensuring the smoothness of the inner wall and reducing water flow resistance.

[0025] The outer protective layer 5 is made of polyester resin, which can protect the pipe from external environmental influences, such as corrosive substances in the soil, ultraviolet aging, and mechanical damage.

[0026] Among them, the outer protective layer 5 contains short-cut fibers 8.

[0027] The chopped fibers 8 are mixed with the polyester resin material of the outer sheath 5 in a certain proportion during the molding process of the outer sheath 5, and the fibers are evenly dispersed in the resin by mechanical stirring or high-speed dispersion equipment. The chopped fibers 8 can effectively improve the mechanical properties and durability of the outer layer of the sewage pipe, making it adaptable to external loads such as soil friction and impact in the buried environment.

[0028] This utility model provides a fiber-reinforced composite sewage pipe with an anti-corrosion layer, and its specific working principle is as follows:

[0029] The anti-corrosion layer 4 made of vinyl ester resin can protect the inner wall of the sewage pipe body 1 from corrosion, preventing it from being eroded by acids, alkalis, microorganisms, and chemicals. The mesh reinforcement layer 6 made of glass fiber can ensure the ring stiffness and axial tensile strength of the pipe. The outer protective layer 5, made of polyester resin and chopped fiber 8, can protect the pipe from external environmental influences, such as corrosive substances in the soil, ultraviolet aging, and mechanical damage. At the same time, it can effectively improve the mechanical properties and durability of the outer layer of the sewage pipe, making it adaptable to external loads such as soil friction and impact in the buried environment.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fiber-reinforced composite sewage pipe with an anti-corrosion layer, comprising a sewage pipe body (1), characterized in that: The sewage pipe body (1) is made of polyethylene. The sewage pipe body (1) is composed of an inner base layer (2) and an outer base layer (3). The outer base layer (3) is located outside the inner base layer (2). A reinforcing layer (6) is provided between the inner base layer (2) and the outer base layer (3). An anti-corrosion layer (4) is provided on the inner wall of the inner base layer (2), and an outer protective layer (5) is provided on the outer wall of the outer base layer (3).

2. The fiber-reinforced composite sewage pipe with an anti-corrosion layer according to claim 1, characterized in that: The reinforcing layer (6) is made of glass fiber.

3. The fiber-reinforced composite sewage pipe with an anti-corrosion layer according to claim 1, characterized in that: The reinforcing layer (6) has a mesh structure.

4. The fiber-reinforced composite sewage pipe with an anti-corrosion layer according to claim 1, characterized in that: The anti-corrosion layer (4) is made of vinyl ester resin.

5. A fiber-reinforced composite sewage pipe with an anti-corrosion layer according to claim 1, characterized in that: A glass fiber mat (7) is provided on the inner wall of the anti-corrosion layer (4).

6. A fiber-reinforced composite sewage pipe with an anti-corrosion layer according to claim 1, characterized in that: The outer protective layer (5) is made of polyester resin.

7. A fiber-reinforced composite sewage pipe with an anti-corrosion layer according to claim 1, characterized in that: The outer protective layer (5) contains short-cut fibers (8).

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