Compression-resistant double-layer plastic pipe

Abstract

The utility model relates to the technical field of pipes, and provides a compression-resistant double-layer plastic pipe which comprises an outer pipe, an inner pipe arranged on the inner side of the outer pipe, a reinforcing structure arranged between the outer pipe and the inner pipe, a wear-resistant structure fixed on the outer side of the outer pipe, and a corrosion-resistant structure fixed on the inner side of the inner pipe. The corrosion-resistant structure comprises a bonding layer, a first corrosion-resistant layer and a second corrosion-resistant layer, the bonding layer is arranged on the inner side wall of the inner pipe, the first corrosion-resistant layer is fixed to the inner side wall of the bonding layer, and the second corrosion-resistant layer is fixed to the inner side wall of the first corrosion-resistant layer. The corrosion-resistant structure is arranged, the first corrosion-resistant layer is the epoxy resin layer and has good corrosion resistance, adhesive force and mechanical strength, and the second corrosion-resistant layer is the fluoroplastic lining layer and has high corrosion resistance, high temperature resistance and low friction coefficient, so that the corrosion-resistant function of the device is achieved, and the service life of the device is prolonged. And the service life of the compression-resistant double-layer plastic pipe in use is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pipes, in particular to a pressure-resistant double-layer plastic pipe. Background Art

[0002] With the rapid development of modern industry and urbanization, the requirements for piping systems are becoming increasingly higher. In particular, in high-pressure, high-temperature, hot and cold water, heating, floor heating and other piping systems, traditional single-layer plastic pipes often cannot meet the performance requirements of pressure resistance, corrosion resistance and high temperature resistance. The market demand for higher performance pressure-resistant double-layer plastic pipes is increasing, so it is necessary to design a pressure-resistant double-layer plastic pipe.

[0003] To this end, the patent with announcement number CN201836549U discloses a pressure-resistant double-layer plastic pipe, which is composed of an inner plastic pipe and an outer plastic pipe. The inner and outer layers are both polyolefin plastic pipes, and the stiffness of the inner plastic pipe is greater than that of the outer plastic pipe. The inner plastic pipe ensures the rigidity of the pressure-resistant double-layer plastic pipe, and the outer plastic pipe ensures the toughness of the pressure-resistant double-layer plastic pipe. It plays a buffering role when subjected to external force impact, protecting the inner plastic pipe with greater rigidity from breaking, thereby reducing the cost of use.

[0004] The inner wall of the double-layer plastic pipe mentioned above is corroded by the transported objects for a long time during use, which may cause damage to the inner wall of the pipe and affect the service life of the pipe. Therefore, it is necessary to design a pressure-resistant double-layer plastic pipe. Utility Model Content

[0005] The purpose of the utility model is to provide a pressure-resistant double-layer plastic pipe to solve the defect of the existing double-layer plastic pipe that the inner wall of the pipe is corroded by the transported objects for a long time during use, which may cause damage to the inner wall of the pipe and shorten the service life of the pipe.

[0006] In order to solve the above technical problems, the present utility model provides the following technical solutions: a pressure-resistant double-layer plastic pipe, comprising an outer pipe;

[0007] An inner tube is provided on the inner side of the outer tube, and a reinforcement structure is provided between the outer tube and the inner tube;

[0008] A wear-resistant structure is fixed to the outside of the outer tube, and a corrosion-resistant structure is fixed to the inside of the inner tube. The corrosion-resistant structure includes an adhesive layer, a first corrosion-resistant layer, and a second corrosion-resistant layer. The adhesive layer is arranged on the inner wall of the inner tube, the first corrosion-resistant layer is fixed to the inner wall of the adhesive layer, and the second corrosion-resistant layer is fixed to the inner wall of the first corrosion-resistant layer.

[0009] Furthermore, the reinforcement structure includes a filler, a first reinforcement wire and a second reinforcement wire. The filler is arranged between the outer tube and the inner tube. The first reinforcement wire is evenly arranged inside the filler, and the second reinforcement wire is evenly fixed on one side of the first reinforcement wire.

[0010] Furthermore, the first reinforcing wires and the second reinforcing wires are distributed at equal intervals inside the filler.

[0011] Furthermore, the first reinforcing wires and the second reinforcing wires are interwoven to form a mesh structure.

[0012] Furthermore, the wear-resistant structure includes an adhesive layer, a first wear-resistant layer and a second wear-resistant layer. The adhesive layer is fixed on the outer wall of the outer tube. The first wear-resistant layer is fixed on the outer side of the adhesive layer. The second wear-resistant layer is fixed on the outer side of the first wear-resistant layer.

[0013] Furthermore, the first wear-resistant layer is a polyurethane layer, and the second wear-resistant layer is an ultra-high molecular weight polyethylene layer.

[0014] Furthermore, the first corrosion-resistant layer is an epoxy resin layer, and the second corrosion-resistant layer is a fluoroplastic lining layer.

[0015] The advantages of the pressure-resistant double-layer plastic pipe provided by the utility model are:

[0016] By providing a corrosion-resistant structure, the first corrosion-resistant layer is an epoxy resin layer with good corrosion resistance, adhesion and mechanical strength, and the second corrosion-resistant layer is a fluoroplastic lining layer with high corrosion resistance, high temperature resistance and low friction coefficient, so that the device has a corrosion-resistant function and improves the service life of the pressure-resistant double-layer plastic pipe during use;

[0017] By providing a wear-resistant structure, the first wear-resistant layer is a polyurethane layer, which has good wear resistance, elasticity and corrosion resistance and can adapt to complex use environments. The second wear-resistant layer is an ultra-high molecular weight polyethylene layer, which has excellent wear resistance, 10 times that of polyethylene and polypropylene, and is light in weight and has good corrosion resistance. This realizes the wear-resistant function of the device and increases the service life of the pressure-resistant double-layer plastic pipe during use.

[0018] By providing a reinforcement structure, the first reinforcement wire and the second reinforcement wire are interwoven to form a mesh structure, which can increase the pressure resistance of the outer tube and the inner tube, and prevent the outer tube from damaging the inner tube when it is hit. The first reinforcement wire and the second reinforcement wire can protect the inner tube and resist pressure, so that the device has the functions of protection and pressure resistance, and improves the service life of the pressure-resistant double-layer plastic pipe during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main cross-sectional three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0021] Figure 3 For the utility model Figure 2 A in the middle is an enlarged structural diagram;

[0022] Figure 4 It is a side cross-sectional structural schematic diagram of the utility model;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the side view section of the present invention.

[0024] Explanation of the reference numerals in the figure: 1. Outer tube; 2. Inner tube; 3. Reinforcement structure; 31. Filler; 32. First reinforcement wire; 33. Second reinforcement wire; 4. Wear-resistant structure; 41. Adhesive layer; 42. First wear-resistant layer; 43. Second wear-resistant layer; 5. Corrosion-resistant structure; 51. Adhesive layer; 52. First corrosion-resistant layer; 53. Second corrosion-resistant layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 5 The pressure-resistant double-layer plastic pipe provided by the utility model includes an outer pipe 1.

[0027] Reference Figure 1-Figure 5 An inner tube 2 is provided on the inner side of the outer tube 1, and a reinforcing structure 3 is provided between the outer tube 1 and the inner tube 2. The reinforcing structure 3 includes a filler 31, a first reinforcing wire 32 and a second reinforcing wire 33. The filler 31 is provided between the outer tube 1 and the inner tube 2. The first reinforcing wire 32 is evenly provided inside the filler 31, and the second reinforcing wire 33 is evenly fixed on one side of the first reinforcing wire 32. The first reinforcing wire 32 and the second reinforcing wire 33 are evenly distributed inside the filler 31, and the first reinforcing wire 32 and the second reinforcing wire 33 are interwoven with each other to form a mesh structure.

[0028] The first reinforcing wire 32 and the second reinforcing wire 33 are interwoven to form a mesh structure, which can increase the pressure resistance of the outer tube 1 and the inner tube 2, and prevent the outer tube 1 from damaging the inner tube 2 when it is hit. The first reinforcing wire 32 and the second reinforcing wire 33 can protect the inner tube 2 and provide pressure resistance.

[0029] Reference Figures 1-4 A wear-resistant structure 4 is fixed to the outside of the outer tube 1. The wear-resistant structure 4 includes a bonding layer 41, a first wear-resistant layer 42 and a second wear-resistant layer 43. The bonding layer 41 is fixed to the outer wall of the outer tube 1. The first wear-resistant layer 42 is fixed to the outside of the bonding layer 41. The second wear-resistant layer 43 is fixed to the outside of the first wear-resistant layer 42. The first wear-resistant layer 42 is a polyurethane layer, and the second wear-resistant layer 43 is an ultra-high molecular weight polyethylene layer.

[0030] The first wear-resistant layer 42 is a polyurethane layer, which has good wear resistance, elasticity and corrosion resistance and can adapt to complex use environments. The second wear-resistant layer 43 is an ultra-high molecular weight polyethylene layer, which has excellent wear resistance, which is 10 times that of polyethylene and polypropylene, and is light in weight and has good corrosion resistance.

[0031] Reference Figures 1-4 A corrosion-resistant structure 5 is fixed to the inner side of the inner tube 2. The corrosion-resistant structure 5 includes an adhesive layer 51, a first corrosion-resistant layer 52 and a second corrosion-resistant layer 53. The adhesive layer 51 is arranged on the inner wall of the inner tube 2. The first corrosion-resistant layer 52 is fixed to the inner wall of the adhesive layer 51. The second corrosion-resistant layer 53 is fixed to the inner wall of the first corrosion-resistant layer 52. The first corrosion-resistant layer 52 is an epoxy resin layer, and the second corrosion-resistant layer 53 is a fluoroplastic lining layer.

[0032] The first corrosion-resistant layer 52 is an epoxy resin layer, which has good corrosion resistance, adhesion and mechanical strength. The second corrosion-resistant layer 53 is a fluoroplastic lining layer, which has high corrosion resistance, high temperature resistance and low friction coefficient.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A compression-resistant double-layer plastic pipe, comprising an outer pipe (1); Its characteristics are: An inner tube (2) is provided on the inner side of the outer tube (1), and a reinforcement structure (3) is provided between the outer tube (1) and the inner tube (2); A wear-resistant structure (4) is fixed on the outer side of the outer tube (1), and a corrosion-resistant structure (5) is fixed on the inner side of the inner tube (2). The corrosion-resistant structure (5) includes an adhesive layer (51), a first corrosion-resistant layer (52) and a second corrosion-resistant layer (53). The adhesive layer (51) is arranged on the inner side wall of the inner tube (2), the first corrosion-resistant layer (52) is fixed on the inner side wall of the adhesive layer (51), and the second corrosion-resistant layer (53) is fixed on the inner side wall of the first corrosion-resistant layer (52).

2. The pressure-resistant double-layer plastic pipe according to claim 1, characterized in that: The reinforcing structure (3) comprises a filler (31), a first reinforcing wire (32) and a second reinforcing wire (33); the filler (31) is arranged between the outer tube (1) and the inner tube (2); the first reinforcing wire (32) is evenly arranged inside the filler (31); and the second reinforcing wire (33) is evenly fixed on one side of the first reinforcing wire (32).

3. The pressure-resistant double-layer plastic pipe according to claim 2, characterized in that: The first reinforcing wires (32) and the second reinforcing wires (33) are both distributed at equal intervals inside the filler (31).

4. The pressure-resistant double-layer plastic pipe according to claim 2, characterized in that: The first reinforcing wire (32) and the second reinforcing wire (33) are interwoven with each other to form a mesh structure.

5. The pressure-resistant double-layer plastic pipe according to claim 1, characterized in that: The wear-resistant structure (4) comprises a bonding layer (41), a first wear-resistant layer (42) and a second wear-resistant layer (43); the bonding layer (41) is fixed to the outer wall of the outer tube (1); the first wear-resistant layer (42) is fixed to the outer side of the bonding layer (41); and the second wear-resistant layer (43) is fixed to the outer side of the first wear-resistant layer (42).

6. The pressure-resistant double-layer plastic pipe according to claim 5, characterized in that: The first wear-resistant layer (42) is a polyurethane layer, and the second wear-resistant layer (43) is an ultra-high molecular weight polyethylene layer.

7. The pressure-resistant double-layer plastic pipe according to claim 1, characterized in that: The first corrosion-resistant layer (52) is an epoxy resin layer, and the second corrosion-resistant layer (53) is a fluoroplastic lining layer.

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