High-strength PE composite pipe

Abstract

The utility model relates to the technical field of PE pipes, and discloses a high-strength PE composite pipe which comprises a pipe body, and the pipe body comprises a steel framework and a PE base layer. The steel framework is provided with a hollow pipe cavity; the PE base layer coats the steel skeleton through injection molding of a polyethylene material to form a pipe body; the steel framework comprises an elastic compression piece and a supporting strip; the supporting strip is formed by spirally winding a metal strip in the length direction of the pipe body. The plurality of elastic compression parts are uniformly distributed along the length direction of the pipe body; every two adjacent elastic compression pieces are connected through a supporting strip. The pipe body of the high-strength PE composite pipe provided by the utility model is endowed with certain elasticity while keeping high strength, has good flexibility and adaptability, is stable and reliable in structural connection, is not easy to loosen from the PE base layer, and is convenient to install and use under various topographic conditions.

Description

Technical Field

[0001] This utility model relates to the field of PE pipe technology, and in particular to a high-strength PE composite pipe. Background Technology

[0002] PE pipe is a type of pipe made by extrusion molding of polyethylene resin as the main raw material. It is widely used in urban and rural water supply pipelines, water supply and drainage, sewage treatment and other industries, and is an ideal pipe material to replace ordinary iron water supply pipes.

[0003] Chinese patent CN219828010U discloses a steel wire mesh reinforced composite PE pipe, comprising a PE outer pipe, a butadiene rubber layer on the inner wall of the PE outer pipe, a steel wire mesh reinforcement on the inner wall of the butadiene rubber layer, a crack-resistant fabric mesh on the inner wall of the steel wire mesh reinforcement, an insulation layer on the inner wall of the crack-resistant fabric mesh, and a PE inner pipe on the inner wall of the insulation layer. The inner wall of the PE inner pipe is coated with an anti-corrosion layer. Although this steel wire mesh reinforced composite PE pipe incorporates a steel wire mesh reinforcement between the butadiene rubber layer and the crack-resistant fabric mesh, providing a certain strengthening effect, under long-term fluid impact and external forces such as pressure, the steel wire mesh reinforcement is prone to loosening and separation from other layers, resulting in an unstable and unreliable structural connection, which is not conducive to installation and use under various terrain conditions. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of the prior art and provide a high-strength PE composite pipe.

[0005] To achieve the above objectives, the present invention adopts the following solution:

[0006] A high-strength PE composite pipe includes a pipe body comprising a steel skeleton and a PE base layer; the steel skeleton has a hollow cavity; the PE base layer is formed by injection molding polyethylene material onto the steel skeleton to form the pipe body.

[0007] The steel frame includes elastic compression members and support bars; the support bars are formed by spirally winding a metal strip along the length of the tube; a plurality of elastic compression members are evenly distributed along the length of the tube; adjacent elastic compression members are connected by a support bar.

[0008] The hollow cavity includes a first hollow cavity and a second hollow cavity communicating with the first hollow cavity; the elastic compression member has the first hollow cavity; and the support bar has the second hollow cavity.

[0009] Further, the elastic compression member comprises a spring, a first ring body connectable to the support bar, and a second ring body connectable to the support bar; the second ring body has a sliding ring cavity for the first ring body to reciprocally slide along the length direction of the tube body; the first ring body is slidably fitted into the sliding ring cavity and connected to the second ring body by the spring.

[0010] Further, the number of the spring is one; the diameter of the spring is greater than the diameter of the hollow tube cavity.

[0011] Further, the number of the spring is one; the diameter of the spring is greater than the diameter of the hollow tube cavity.

[0012] Further, the number of the spring is one; the diameter of the spring is greater than the diameter of the hollow tube cavity.

[0013] Further, the number of the spring is one; the diameter of the spring is greater than the diameter of the hollow tube cavity.

[0014] Further, the number of the spring is one; the diameter of the spring is greater than the diameter of the hollow tube cavity.

[0015] Further, the number of the spring is one; the diameter of the spring is greater than the diameter of the hollow tube cavity.

[0016] Further, the number of the spring is one; the diameter of the spring is greater than the diameter of the hollow tube cavity.

[0017] Further, the number of the spring is one; the diameter of the spring is greater than the diameter of the hollow tube cavity.

[0018] Compared with the prior art, the utility model has the advantages of the following:

[0019] The utility model discloses a steel framework and PE base layer are combined to form a tube body, the steel framework is improved, as the core support structure, improves the strength of the tube body, and the combination design of elastic compression member and support bar, support bar adopts a metal strip and forms spiral winding along the length direction of the tube body, and is connected through a support bar between adjacent two elastic compression members, so that the tube body is high in strength and also has certain elasticity, has good flexibility and adaptability, and the structure connection is stable and reliable, and the PE base layer is not easy to loosen, and the utility model is convenient to install and use under various terrain conditions. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be described in further detail below in combination with the drawings and specific embodiments.

[0021] Figure 1It is the three-dimensional structure schematic diagram of the high-strength PE composite pipe of the utility model.

[0022] Figure 2 It is the sectional structure schematic diagram of the high-strength PE composite pipe of the utility model.

[0023] Figure 3 It is the three-dimensional structure schematic diagram of the high-strength PE composite pipe of the utility model.

[0024] Figure 4 It is the three-dimensional structure schematic diagram of the steel skeleton of the utility model.

[0025] Figure 5 It is the three-dimensional structure schematic diagram of the elastic compression piece of the utility model.

[0026] Figure 6 It is the three-dimensional structure schematic diagram of the elastic compression piece of the utility model.

[0027] Figure 7 It is the three-dimensional structure schematic diagram of the elastic compression piece of the utility model.

[0028] Figure 8 It is the three-dimensional structure schematic diagram of the support strip of the utility model.

[0029] The drawing includes:

[0030] Pipe body 10, steel skeleton 1, elastic compression piece 11, first ring body 111, first positioning groove 1111, second ring body 112, second positioning groove 1121, spring 113, support strip 12, spiral groove 121, hollow tube cavity 13, first hollow cavity 131, second hollow cavity 132, PE base layer 2, high-strength reinforcing layer 20. Specific implementation

[0031] The specific implementation of the utility model will be described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0032] As Figures 1 to 8As shown, a high-strength PE composite pipe comprises a pipe body 10, which comprises a steel framework 1 and a PE base layer 2; the steel framework 1 serves as a core support structure to ensure the high strength of the pipe. Preferably, the steel framework 1 is made of stainless steel, galvanized steel or carbon fiber steel, and of course other steel materials can also be used to make the steel framework 1, mainly to enhance the overall strength of the high-strength PE composite pipe. The steel framework 1 has a hollow lumen 13, which forms the inner lumen of the pipe body 10 after the PE base layer 2 is coated. The PE base layer 2 is injection molded on the steel framework 1 to form the pipe body 10; the PE base layer 2 is injection molded on the steel framework 1, which not only enhances the sealing of the pipe, but also gives it good corrosion resistance and flexibility. The steel framework 1 comprises elastic compression members 11 and support strips 12; the support strip 12 is formed by spirally winding a metal strip along the length direction of the pipe body 10, similar to a spring 113. A plurality of elastic compression members 11 are uniformly arranged along the length direction of the pipe body 10; two adjacent elastic compression members 11 are connected by a support strip 12; the combination of elastic compression members 11 and support strips 12 not only ensures the strength of the pipe, but also gives it a certain elasticity, which is convenient for installation and coping with terrain changes. The hollow lumen 13 comprises a first hollow cavity 131 and a second hollow cavity 132 in communication with the first hollow cavity 131; the elastic compression member 11 has the first hollow cavity 131; the support strip 12 has the second hollow cavity 132.

[0033] The high-strength PE composite pipe is formed by combining the steel framework 1 and the PE base layer 2 to form the pipe body 10. The steel framework 1 is improved as a core support structure to improve the strength of the pipe body 10, and the combination of the elastic compression members 11 and the support strips 12, the support strip 12 is formed by spirally winding a metal strip along the length direction of the pipe body 10, and a support strip 12 is connected between two adjacent elastic compression members 11, so that the pipe body 10 not only maintains high strength, but also has a certain elasticity, good flexibility and adaptability, stable and reliable structure connection, not easy to loosen with the PE base layer 2, and convenient to install and use in various terrain conditions.

[0034] In the embodiment, the elastic compression member 11 comprises a spring 113, a first ring body 111 connectable to the support strip 12, and a second ring body 112 connectable to the support strip 12; the second ring body 112 has a sliding ring cavity for the first ring body 111 to reciprocally slide along the length direction of the pipe body 10; the first ring body 111 is slidably fitted into the sliding ring cavity and connected to the second ring body 112 by the spring 113. Between two adjacent support strips 12, the first ring body 111 is connected to one of the support strips 12, and the second ring body 112 is connected to the other adjacent support strip 12, so as to realize the connection between the elastic compression member 11 and the support strip 12. With the double elasticity of the elastic compression member 11 and the support strip 12, the pipe body 10 formed by the elastic compression member 11, the support strip 12, and the PE base layer 2 has good deformation ability, high strength, and good flexibility and adaptability, and the structure connection is stable and reliable, and the elastic compression member 11 is not easy to be detached from the PE base layer 2, which is convenient for installation and use in various terrain conditions.

[0035] In the embodiment, the number of the springs 113 is several; the several springs 113 are uniformly arranged in the sliding ring cavity around the central axis of the pipe body 10. In this way, the several springs 113 can help to improve the elasticity or deformation ability of the elastic compression member 11. Specifically, the number of the springs 113 is 3, 4, 5, or 6. In the embodiment, preferably, the number of the springs 113 is 4. In another embodiment, the number of the springs 113 is one; the diameter of the spring 113 is greater than the diameter of the hollow pipe cavity 13. The spring 113 is not shown in the drawings. The spring 113 can also have good elasticity or deformation ability.

[0036] In order to realize the stable reciprocating sliding of the first ring body 111 in the second ring body 112 and prevent the first ring body 111 from being detached, the two ends of the spring 113 are welded to the first ring body 111 and the second ring body 112, respectively. Of course, the two ends of the spring 113 can also be connected to the first ring body 111 and the second ring body 112 in other ways, such as fixed adhesive.

[0037] In the embodiment, for the support strip 12, the first ring body 111 and the second ring body 112 respectively have a first positioning groove 1111 and a second positioning groove 1121 for positioning and installing the support strip 12. In this way, the support strip 12 is designed to facilitate the stable and fixed installation between the support strip 12 and the first ring body 111 and the second ring body 112.

[0038] Preferably, the support strip 12 has a spiral groove 121 spirally arranged along the length direction of the pipe body 10.

[0039] In the embodiment, the outer wall of the pipe body 10 is provided with a high-strength reinforcing layer 20; the high-strength reinforcing layer 20 is a glass fiber layer or a polypropylene fiber layer. The glass fiber layer or the polypropylene fiber layer is used as the high-strength reinforcing layer 20 and is compounded on the outer wall of the pipe body 10, which is beneficial to improve the strength of the pipe body 10 and enhance the stress cracking resistance of the pipe body 10.

[0040] In summary, the utility model discloses a high-strength PE composite pipe, wherein the high-strength PE composite pipe is formed by combining the steel framework 1 and the PE base layer 2 to form the pipe body 10, the steel framework 1 is improved to serve as the core support structure, the strength of the pipe body 10 is improved, the elastic compression member 11 and the support strip 12 are combined, the support strip 12 is spirally wound along the length direction of the pipe body 10 by using a metal strip, and the adjacent two elastic compression members 11 are connected by the support strip 12, so that the pipe body 10 has certain elasticity while maintaining high strength, has good flexibility and adaptability, the structure connection is stable and reliable, is not easy to be loosened from the PE base layer 2, and is convenient to install and use under various terrain conditions.

[0041] 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 replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A high strength PE composite pipe comprising a pipe body, characterized in that, The pipe body comprises a steel framework and a PE base layer; the steel framework has a hollow pipe cavity; the PE base layer is injection molded on the steel framework by polyethylene material to form the pipe body; The steel framework comprises elastic compression members and support strips; the support strips are spirally wound by a metal strip along the length direction of the pipe body; a plurality of elastic compression members are uniformly arranged along the length direction of the pipe body; two adjacent elastic compression members are connected by a support strip; The hollow pipe cavity comprises a first hollow cavity and a second hollow cavity in communication with the first hollow cavity; The elastic compression member has the first hollow cavity thereon; The support strip has the second hollow cavity thereon.

2. The high strength PE composite pipe according to claim 1, characterized in that, The elastic compression member comprises a spring, a first ring body connectable with the support strip, and a second ring body connectable with the support strip; the second ring body has a sliding ring cavity for the first ring body to reciprocally slide along the length direction of the pipe body; The first ring body is slidably fitted into the sliding ring cavity and connected with the second ring body by the spring.

3. The high strength PE composite pipe according to claim 2, characterized in that, The number of the springs is a plurality; the plurality of springs are uniformly arranged in the sliding ring cavity around the central axis of the pipe body.

4. The high strength PE composite pipe according to claim 3, characterized in that, The number of the springs is 3, 4, 5 or 6.

5. The high strength PE composite pipe of claim 2, wherein, The number of the springs is 1; the diameter of the spring is greater than the diameter of the hollow pipe cavity.

6. The high strength PE composite pipe of claim 2, wherein, The two ends of the spring are respectively welded with the first ring body and the second ring body.

7. The high strength PE composite pipe of claim 2, wherein, The first ring body and the second ring body respectively have first positioning grooves and second positioning grooves for positioning and mounting the support strips.

8. The high strength PE composite pipe according to any one of claims 1 to 7, characterized in that, The outer wall of the pipe body is provided with a high-strength reinforcing layer; the high-strength reinforcing layer is a glass fiber layer or a polypropylene fiber layer.

9. The high strength PE composite pipe of claim 1, wherein, The steel framework is made of stainless steel, galvanized steel or carbon fiber steel.

10. The high strength PE composite pipe of claim 1, wherein, The support strip has a spiral groove spirally arranged along the length direction of the pipe body.

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