High-strength wear-resistant HDPE (high-density polyethylene) composite pipe

Abstract

The utility model relates to the technical field of HDPE composite pipes, and discloses a high-strength wear-resistant HDPE composite pipe which comprises an HDPE inner pipe and an outer pipe, the HDPE inner pipe is located in the outer pipe, and an anti-corrosion layer is arranged on the inner side face of the HDPE inner pipe. A wear-resistant layer is arranged on the outer side surface of the HDPE inner pipe; the wear-resistant layer is a structural layer formed by a metal hose or a braided tube; a plurality of fixed supporting rings distributed in the length direction of the outer pipe are further arranged between the wear-resisting layer and the outer pipe. The fixed supporting ring is arranged on the outer surface of the wear-resistant layer in a matched and matched mode. The wear-resistant layer is fixedly connected with the outer pipe through the fixed supporting ring, and a wear-resistant coating is further arranged on the outer surface of the outer pipe. According to the high-strength wear-resistant HDPE composite pipe provided by the utility model, through the selection of a multi-layer wear-resistant structure and special materials and the design of the fixed supporting ring and the wear-resistant coating, the high-strength wear-resistant HDPE composite pipe has remarkable advantages in the aspect of wear resistance.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of HDPE composite pipe technical field, in particular to a kind of high-strength wear-resistant HDPE composite pipe. BACKGROUND

[0002] At present, HDPE is a common plastic material, with excellent physical properties and chemical stability. HDPE pipe has become one of the important materials in modern pipeline engineering due to its excellent performance and wide application field.

[0003] A kind of antioxidant HDPE pipe is disclosed in Chinese patent No. CN202123119373.5, which includes a pipe body, the pipe body is equipped with the same structure ring at both ends, and the two rings are symmetrically distributed, the pipe body includes an antioxidant layer, a first high-density polyethylene layer, an antibacterial layer, a sound-absorbing layer, a thermal insulation layer, a reinforcing layer and a second high-density polyethylene layer, and the antibacterial layer circumferential outer wall is provided with a second high-density polyethylene layer, the second high-density polyethylene layer circumferential outer wall is provided with a reinforcing layer, and the reinforcing layer circumferential outer wall is provided with a thermal insulation layer. The above design improves the antioxidant performance of HDPE pipe, but in some specific applications, especially those with extremely stringent requirements for material wear resistance, the wear resistance of HDPE often appears insufficient, which may not meet the actual demand. These specific applications may include but are not limited to heavy machinery manufacturing, mining, chemical equipment and the manufacturing of some high-end sports goods, etc. The wear resistance of the above-mentioned antioxidant HDPE pipe may not be sufficient to meet the requirements. SUMMARY

[0004] The utility model aims at overcoming the problems of prior art, and provides a kind of high-strength wear-resistant HDPE composite pipe.

[0005] To achieve the above purpose, the utility model adopts the following scheme:

[0006] A kind of high-strength wear-resistant HDPE composite pipe, including HDPE inner tube, outer tube, the HDPE inner tube is located in the outer tube, the inner side of the HDPE inner tube is equipped with anticorrosive layer;The outer side of the HDPE inner tube is equipped with wear-resistant layer;The wear-resistant layer is a structure layer formed by metal hose or braided tube;Between wear-resistant layer and outer tube, it is also equipped with several fixed support rings along the length direction of the outer tube;The fixed support ring is adapted to be sleeved on the outer surface of the wear-resistant layer;The wear-resistant layer is fixedly connected with outer tube by the fixed support ring, and the outer surface of the outer tube is also equipped with anti-wear coating.

[0007] Further, the fixed support ring comprises a ring body and a plurality of support columns connected to the outer circumferential side of the ring body; the ring body is adapted to be sleeved on the outer surface of the wear-resistant layer; the outer ends of the support columns extend to the inner surface of the outer pipe.

[0008] Further, the plurality of support columns are evenly distributed along the outer circumferential side of the ring body and are arranged to extend outwardly along the radial direction of the ring body.

[0009] Further, the metal hose is a spiral stainless steel hose.

[0010] Further, the braided tube is composed of nylon wire right spiral winding and steel wire left spiral winding through bidirectional cross winding.

[0011] Further, the wear-resistant layer is tightly bonded with the HDPE inner pipe through adhesive.

[0012] Further, the outer pipe is a structural layer made of HDPE material mixed with glass fiber.

[0013] Further, the anti-wear coating is made of polyurethane material.

[0014] Further, the anticorrosive layer is made of polyvinylidene fluoride or epoxy resin.

[0015] Compared with the prior art, the utility model has the advantages of the following:

[0016] 1. The high-strength wear-resistant HDPE composite pipe mainly has the following advantages: the multi-layer wear-resistant structure and the selection of special materials, the design of the fixed support ring and the anti-wear coating make it have remarkable advantages in wear resistance. The wear-resistant layer is arranged on the outer side of the HDPE inner pipe, and the structural layer is formed by the metal hose or the braided tube. This design greatly enhances the wear resistance of the pipe. When conveying particulate medium, the wear-resistant layer can effectively prevent the pipe from being worn by the particulate medium. The fixed support ring is arranged between the wear-resistant layer and the outer pipe, and the wear-resistant layer is fixedly connected with the outer pipe through the fixed support ring. In addition to strengthening the strength of the pipe, the stability of the wear-resistant layer is also ensured, so that the wear-resistant layer can better play its wear-resistant function. The outer surface of the outer pipe is also provided with an anti-wear coating, which further improves the overall wear resistance of the pipe, so that the composite pipe has multidirectional protection in wear resistance and can effectively cope with friction and wear inside and outside the pipe.

[0017] 2, The high-strength wear-resistant HDPE composite pipe provided by the utility model combines some properties of the HDPE material itself, such as flexibility, pressure resistance and the like, and meanwhile, additional functional layers, such as an anti-corrosion layer, a wear-resistant layer and a wear-resistant coating, are designed, so that the composite pipe is balanced in various performances, can perform well in corrosion resistance, and can also have good performance in wear resistance and structural stability. The comprehensive performance enables it to be widely applied to various complex engineering environments, such as urban water supply and drainage, the chemical industry, sewage treatment, agricultural irrigation and the like, and meets the demand for pipes in different scenes. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0019] Fig. 1 is a three-dimensional structure schematic diagram of dislocation disassembly of the high-strength wear-resistant HDPE composite pipe of the utility model.

[0020] Fig. 2 is a three-dimensional structure schematic diagram of the high-strength wear-resistant HDPE composite pipe of the utility model.

[0021] Fig. 3 is a top view structure schematic diagram of the high-strength wear-resistant HDPE composite pipe of the utility model.

[0022] Fig. 4 is a three-dimensional structure schematic diagram of the fixed support ring of the utility model.

[0023] The drawings comprise:

[0024] The wear-resistant coating 1, the outer pipe 2, the fixed support ring 3, the ring body 31, the support column 32, the wear-resistant layer 4, the HDPE inner pipe 5 and the anti-corrosion layer 6. DETAILED DESCRIPTION

[0025] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0026] As Figs. 1 to 4As shown, a high-strength wear-resistant HDPE composite pipe, namely a high-strength wear-resistant high-density polyethylene composite pipe. The high-strength wear-resistant HDPE composite pipe comprises an anti-wear coating 1, an outer pipe 2, a fixed support ring 3, a wear-resistant layer 4, an HDPE inner pipe 5 and an anti-corrosion layer 6. The HDPE inner pipe 5 is a high-density polyethylene inner pipe. The HDPE inner pipe 5 is located in the outer pipe 2, and the inner side of the HDPE inner pipe 5 is provided with an anti-corrosion layer 6; the outer side of the HDPE inner pipe 5 is provided with a wear-resistant layer 4; the wear-resistant layer 4 is a structural layer formed by a metal hose or a braided tube; a plurality of fixed support rings 3 are arranged along the length direction of the outer pipe 2 between the wear-resistant layer 4 and the outer pipe 2; the number of fixed support rings 3 can be reasonably designed according to needs. The fixed support ring 3 is fitted on the outer surface of the wear-resistant layer 4; the wear-resistant layer 4 is fixedly connected with the outer pipe 2 through the fixed support ring 3, and the outer surface of the outer pipe 2 is further provided with an anti-wear coating 1.

[0027] The high-strength wear-resistant HDPE composite pipe mainly has significant advantages in wear resistance through the selection of multi-layer wear-resistant structure and special materials, as well as the design of fixed support ring 3 and anti-wear coating 1.

[0028] In this embodiment, the fixed support ring 3 comprises a ring body 31 and a plurality of support columns 32 connected to the outer peripheral side of the ring body 31; the ring body 31 is fitted on the outer surface of the wear-resistant layer 4; the outer ends of the support columns 32 extend to the inner surface of the outer pipe 2. Specifically, the plurality of support columns 32 are uniformly distributed along the outer peripheral side of the ring body 31 and are arranged to extend outwardly along the radial direction of the ring body 31. The fixed support ring 3 is made of rubber added with wear-resistant ceramic particles. In addition to enhancing the strength of the entire pipe, the design of the fixed support ring 3 can also ensure the stable connection of the wear-resistant layer 4 and the outer pipe 2, especially by connecting a plurality of support columns 32 on the ring body 31, effectively dispersing the external force received by the wear-resistant layer 4, reducing the wear caused by direct friction, preventing displacement or damage caused by external force during use, thereby enhancing the wear resistance of the entire pipe.

[0029] In this embodiment, the wear-resistant layer 4 is a structural layer formed by a metal hose, specifically, the metal hose can be a spiral stainless steel hose. In another embodiment, the wear-resistant layer 4 is a structural layer formed by a braided tube; specifically, the braided tube is composed of nylon wire right spiral winding and steel wire left spiral winding through bidirectional cross winding. The wear-resistant layer 4 formed by the metal hose or the braided tube greatly enhances the wear resistance of the pipe, especially when conveying media containing particulate matter (such as sandstone, etc.), the wear-resistant layer 4 can effectively prevent the wear of the pipe by these particulate matters.

[0030] On the other hand, the wear-resistant layer 4 is tightly bonded with the HDPE inner tube 5 by adhesive glue. The connection mode of using adhesive glue to bond the wear-resistant layer 4 and the HDPE inner tube 5 ensures the tight connection between the wear-resistant layer 4 and the HDPE inner tube 5, thereby achieving good sealing performance and effectively preventing fluid or gas leakage.

[0031] In this embodiment, the outer tube 2 of the high-strength wear-resistant HDPE composite pipe is a structural layer made of HDPE material mixed with glass fiber. The outer surface of the outer tube 2 is also provided with an anti-wear coating 1 made of polyurethane material. Since the outer tube 2 is a structural layer made of HDPE material mixed with glass fiber, this combination makes the pipe material have very high strength and toughness, and can withstand greater pressure and impact force, ensuring the stability and safety of the pipeline. The anti-wear coating 1 is made of polyurethane material, which has excellent wear resistance. This can effectively resist the wear and tear of the pipeline due to friction during use, prolonging the service life of the pipeline.

[0032] The inner side of the HDPE inner tube 5 is provided with a corrosion-resistant layer 6, and the material of the corrosion-resistant layer 6 is polyvinylidene fluoride or epoxy resin. Both of these materials have good corrosion resistance, which can effectively protect equipment or structures from chemical corrosion.

[0033] In summary, the utility model discloses a kind of high-strength wear-resistant HDPE composite pipe, wherein, a kind of high-strength wear-resistant HDPE composite pipe is mainly through multilayer wear-resistant structure and the selection of special material, and the design of fixed support ring 3 and wear-resistant coating 1, so that it has significant advantage in wear resistance performance. The design of fixed support ring 3 can not only enhance the strength of the entire pipeline, but also ensure the stable connection of wear-resistant layer 4 and outer tube 2, especially by connecting multiple support columns 32 on ring body 31, effectively dispersing the external force received by wear-resistant layer 4, reducing the wear caused by direct friction, preventing displacement or damage caused by external force during use, thereby enhancing the wear resistance of the entire pipe. The structural layer formed by metal hose or braided tube greatly enhances the wear resistance of the pipeline, especially when conveying medium containing particulate matter (such as sand, etc.), wear-resistant layer 4 can effectively prevent the wear of the pipeline by these particulate matter. At the same time, the connection mode of using adhesive to bond wear-resistant layer 4 and HDPE inner tube 5 ensures the tight connection between wear-resistant layer 4 and HDPE inner tube 5, thereby achieving good sealing performance and effectively preventing fluid or gas leakage. Since outer tube 2 is a structural layer made of HDPE material mixed with glass fiber, this combination makes the pipe material have high strength and toughness, can withstand large pressure and impact force, and ensures the stability and safety of the pipeline. Wear-resistant coating 1 is made of polyurethane material, with excellent wear resistance. This can effectively resist the wear of the pipeline caused by friction during use, prolonging the service life of the pipeline.

[0034] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present application, and these improvements and substitutions should also be considered within the protection scope of the present application.

Claims

1. A high strength abrasion resistant HDPE composite pipe comprising an inner pipe of HDPE, an outer pipe, the inner pipe of HDPE being located within the outer pipe, characterised in that, The inner side of the HDPE inner tube is provided with an anticorrosion layer; the outer side of the HDPE inner tube is provided with a wear-resistant layer; the wear-resistant layer is a structural layer formed by a metal hose or a braided tube; a plurality of fixed support rings arranged along the length direction of the outer tube are further arranged between the wear-resistant layer and the outer tube; the fixed support rings are fitted on the outer surface of the wear-resistant layer; the wear-resistant layer is fixedly connected with the outer tube through the fixed support rings; and the outer surface of the outer tube is further provided with an anti-wear coating.

2. The high-strength, abrasion-resistant HDPE composite pipe of claim 1, wherein, The fixed support ring comprises a ring body and a plurality of support columns connected to the outer circumferential side of the ring body; the ring body is fitted on the outer surface of the wear-resistant layer; and the outer ends of the support columns extend to the inner surface of the outer tube.

3. The high-strength, abrasion-resistant HDPE composite pipe of claim 2, wherein, The plurality of support columns are uniformly distributed along the outer circumferential side of the ring body and are arranged to extend outward along the radial direction of the ring body.

4. The high-strength, abrasion-resistant HDPE composite pipe of claim 1, wherein, The metal hose is a spiral stainless steel hose.

5. The high-strength, abrasion-resistant HDPE composite pipe of claim 1, wherein, The braided tube is composed of nylon wire right spiral winding and steel wire left spiral winding through bidirectional cross winding.

6. The high-strength, abrasion-resistant HDPE composite pipe of claim 1, wherein, The wear-resistant layer is tightly bonded with the HDPE inner tube through adhesive.

7. The high-strength, abrasion-resistant HDPE composite pipe of claim 1, wherein, The anti-wear coating is made of polyurethane material.

8. The high-strength, abrasion-resistant HDPE composite pipe of claim 1, wherein, The material of the anticorrosion layer is polyvinylidene fluoride or epoxy resin.

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