Novel steel belt framework polyethylene composite pipe

Abstract

The utility model provides a novel steel belt framework polyethylene composite pipe, which belongs to the technical field of polyethylene pipes and comprises an inner polyethylene layer, a first reinforcing layer and an outer polyethylene layer which are sequentially arranged from inside to outside. The first reinforcing layer comprises a strip-shaped steel belt and a first resin layer, the strip-shaped steel belt is wound on the surface layer of the inner polyethylene layer at a preset spiral interval to form a steel belt framework, the first resin layer is shaped on the surface layer of the steel belt framework, and the outer polyethylene layer is arranged on the surface layer of the first resin layer. According to the reinforced polyethylene composite pipe, the strip-shaped steel belt is wound on the surface layer of the inner polyethylene layer at the preset spiral interval to form the steel belt framework, so that the pipe is prevented from being extruded by external pressure, and local flattening or deformation of the pipe is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyethylene pipes, and particularly relates to a novel steel-belt skeleton polyethylene composite pipe. Background Art

[0002] With technological advancements and industrial development, polyethylene composite pipes are increasingly being used across a wide range of industries, thanks to their excellent corrosion resistance, high temperature resistance, and impact resistance. However, existing polyethylene composite pipes also have certain drawbacks. Some large-diameter polyethylene composite pipes are more susceptible to localized deformation when subjected to uneven external pressure, particularly during storage and transportation. Improper stacking or compression by heavy objects can easily lead to pipe flattening or deformation.

[0003] In order to enhance the strength of the polyethylene composite pipe, steel belts, steel meshes, etc. are lined inside the pipe. For example, the utility model patent with patent number CN202221963299.7 discloses a perforated steel belt polyethylene composite pipe. By setting a perforated steel belt pipe body in the center of the inner side of the outer pipe body and using the perforated steel belt as a liner, the strength of the pipe body is effectively enhanced.

[0004] However, whether by sleeve installation or hoop wrapping, the mesh steel strip is set in the inner center of the outer pipe body, the manufacturing process is complicated and the production cost is high. At the same time, the polyethylene composite pipe produced is not only heavy in weight but also not conducive to the cutting and bending of the polyethylene composite pipe due to the addition of a large number of mesh steel strips. Utility Model Content

[0005] Based on this, the utility model provides a new type of steel belt skeleton polyethylene composite pipe to solve the technical problem existing in the prior art that the existing polyethylene composite pipe is not only heavy but also not conducive to the cutting and bending of the polyethylene composite pipe due to the addition of a large number of perforated steel belts.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A new type of steel-strip skeleton polyethylene composite pipe, comprising an inner polyethylene layer, a first reinforcement layer and an outer polyethylene layer arranged in sequence from the inside to the outside;

[0008] The first reinforcement layer includes a strip steel belt and a first resin layer. The strip steel belt is wound on the surface of the inner polyethylene layer with a preset spiral pitch to form a steel belt skeleton. The first resin layer is formed on the surface of the steel belt skeleton, and the outer polyethylene layer is arranged on the surface of the first resin layer.

[0009] Preferably, the strip steel strip is a galvanized steel strip.

[0010] Preferably, circular holes are provided on the surface of the strip steel belt at preset intervals.

[0011] Preferably, reinforcing ribs are provided on the surface of the strip steel belt.

[0012] Preferably, the strip steel strip has a width of 4 mm to 6 mm and a thickness of 0.8 mm to 1.2 mm.

[0013] Preferably, the preset spiral pitch is 3 mm to 9 mm.

[0014] Preferably, it further comprises a second reinforcement layer, wherein the second reinforcement layer is arranged between the first reinforcement layer and the outer polyethylene layer.

[0015] Preferably, the second reinforcement layer includes a steel mesh and a second resin layer. The steel mesh is wrapped around the surface of the first resin layer to form a steel mesh skeleton. The second resin layer is formed on the surface of the steel belt skeleton. The outer polyethylene layer is arranged on the surface of the second resin layer.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] (1) To increase the rigidity and strengthen the polyethylene composite pipe, the strip steel belt is wound around the surface of the inner polyethylene layer at a preset spiral pitch to form a steel belt skeleton, thereby preventing the pipe from being squeezed by external pressure, causing local flattening or deformation of the pipe.

[0018] (2) The polyethylene composite pipe is light in weight and easy to transport within the same unit volume. Since the strip steel belt is wound on the surface of the inner polyethylene layer at a preset spiral pitch, the strip steel belt is not completely covered on the surface of the inner polyethylene layer. This improves the strength of the polyethylene composite pipe while reducing its weight.

[0019] (3) The manufacturing process is simple and the production cost is low. After the inner polyethylene tube is prepared by an extruder, the strip steel belt is spirally wound on the surface of the inner polyethylene tube by a winding device, which can adapt to pipes of different lengths or different diameters.

[0020] (4) Compared with the method of sleeve or hoop wrapping the mesh steel strip pipe body, the strip steel strip is wound on the surface of the inner polyethylene pipe in a spiral winding manner, which is conducive to the preparation of the formed polyethylene composite pipe to achieve slight bending, and at the same time, it is also convenient for cutting the polyethylene composite pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of a new type of steel-strip skeleton polyethylene composite pipe.

[0022] Figure 2This is the left view of a new type of steel-strip skeleton polyethylene composite pipe.

[0023] Figure 3 It is a strip of steel with round holes.

[0024] Figure 4 It is a strip steel belt with reinforcing ribs.

[0025] In the figure: inner polyethylene layer 100, first reinforcement layer 200, strip steel belt 210, circular hole 211, reinforcing rib 212, first resin layer 220, second reinforcement layer 300, steel mesh 310, second resin layer 320, outer polyethylene layer 400. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The following will further describe the technical solution of the present invention in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0027] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc. indicating an orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] Please see Figures 1 to 4 A new type of steel-belt skeleton polyethylene composite pipe includes an inner polyethylene layer 100, a first reinforcement layer 200 and an outer polyethylene layer 400 arranged in sequence from the inside to the outside; the first reinforcement layer 200 includes a strip steel belt 210 and a first resin layer 220, the strip steel belt 210 is wound on the surface of the inner polyethylene layer 100 with a preset spiral pitch to form a steel belt skeleton, the first resin layer 220 is fixed on the surface of the steel belt skeleton, and the outer polyethylene layer 400 is arranged on the surface of the first resin layer 220.

[0029] The effect achieved

[0030] (1) To increase the rigidity and strengthen the polyethylene composite pipe, the strip steel belt 210 is wound around the surface of the inner polyethylene layer 100 at a preset spiral pitch to form a steel belt skeleton, thereby preventing the pipe from being squeezed by external pressure, causing local flattening or deformation of the pipe.

[0031] (2) The polyethylene composite pipe is light in weight and easy to transport within the same unit volume. Since the strip steel belt 210 is wound on the surface of the inner polyethylene layer 100 at a preset spiral pitch, the strip steel belt 210 is not completely covered on the surface of the inner polyethylene layer 100. This improves the strength of the polyethylene composite pipe while reducing its weight.

[0032] (3) The manufacturing process is simple and the production cost is low. After the inner polyethylene tube is prepared by an extruder, the strip steel belt 210 is spirally wound on the surface of the inner polyethylene tube by a winding device, which can adapt to pipes of different lengths or different diameters.

[0033] (4) Compared with the method of sleeve or hoop-wrapping the perforated steel strip pipe body, the strip steel strip 210 is wound on the surface of the inner polyethylene pipe in a spiral winding manner, which is conducive to the preparation of the formed polyethylene composite pipe to achieve slight bending, and at the same time, it is also convenient for cutting the polyethylene composite pipe.

[0034] Preferably, the strip steel strip 210 is a galvanized steel strip. Compared with ordinary steel strips, the galvanized steel strip has strong corrosion resistance, good tensile properties and fire resistance.

[0035] Further, see Figure 3 The surface of the strip steel strip 210 is provided with circular holes 211 at a preset interval. For some polyethylene composite pipes that require high strength and light weight, the circular holes 211 are provided at a preset interval on the surface of the strip steel strip 210. The strip steel strip 210 with the circular holes 211 is then wound around the surface of the inner polyethylene layer 100 at a preset spiral pitch, thereby achieving the advantages of high strength and light weight of the prepared polyethylene composite pipe.

[0036] Further, see Figure 4 The surface of the strip steel strip 210 is provided with reinforcing ribs 212. For some polyethylene composite pipes that require high strength to prevent the pipe from being crushed or deformed, the reinforcing ribs 212 are provided on the surface of the strip steel strip 210. The strip steel strip 210 with the reinforcing ribs 212 is wound around the surface of the inner polyethylene layer 100 at a preset spiral pitch to increase the compressive strength of the polyethylene composite pipe and prevent the pipe from being crushed or deformed.

[0037] Specifically, the reinforcing rib 212 is a cylindrical iron wire or a strip of iron sheet, and is arranged on the surface of the strip steel belt 210 by integral casting or welding. During the winding process, the surface of the strip steel belt 210 and the inner polyethylene layer 100 are in contact with each other, and the reinforcing rib 212 is exposed.

[0038] Specifically, the reinforcing ribs 212 can be arranged along the length direction of the strip steel strip 210, and when arranged along the length direction of the strip steel strip 210, they can be arranged intermittently or continuously; furthermore, the reinforcing ribs 212 can be arranged along the width direction of the strip steel strip 210, and a preset spacing is set between adjacent reinforcing ribs 212.

[0039] Preferably, the strip steel belt 210 has a width of 4 mm to 6 mm and a thickness of 0.8 mm to 1.2 mm, so as to facilitate the rotation and winding of the strip steel belt 210 on the surface of the inner polyethylene layer 100 .

[0040] Preferably, the preset spiral pitch is 3mm-9mm. While enhancing the strength of the polyethylene composite pipe, setting a preset spiral pitch of 3mm-9mm is more conducive to achieving slight bending of the polyethylene composite pipe without damaging the pipe after bending.

[0041] In a possible embodiment, the novel steel-strip skeleton polyethylene composite pipe further includes a second reinforcement layer 300 , which is disposed between the first reinforcement layer 200 and the outer polyethylene layer 400 , to further enhance the strength of the pipe.

[0042] Preferably, the second reinforcement layer 300 includes a steel mesh 310 and a second resin layer 320. The steel mesh 310 is wrapped around the surface of the first resin layer 220 to form a steel mesh 310 skeleton. The second resin layer 320 is formed on the surface of the steel strip skeleton. The outer polyethylene layer 400 is provided on the surface of the second resin layer 320. The arrangement of the steel strip 210 skeleton and the steel mesh 310 skeleton within the polyethylene composite pipe achieves dual rigidity reinforcement, thereby improving the overall structural strength of the polyethylene composite pipe.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to provide an exhaustive list of all implementation methods. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A new type of steel-strip skeleton polyethylene composite pipe, characterized in that: It comprises an inner polyethylene layer, a first reinforcement layer and an outer polyethylene layer arranged in sequence from the inside to the outside; The first reinforcement layer includes a strip steel belt and a first resin layer. The strip steel belt is wound on the surface of the inner polyethylene layer with a preset spiral pitch to form a steel belt skeleton. The first resin layer is formed on the surface of the steel belt skeleton, and the outer polyethylene layer is arranged on the surface of the first resin layer.

2. A novel steel-strip skeleton polyethylene composite pipe according to claim 1, characterized in that: The strip steel strip is a galvanized steel strip.

3. The novel steel-strip skeleton polyethylene composite pipe according to claim 1, characterized in that: Circular holes are opened on the surface of the strip steel belt at preset intervals.

4. The novel steel-strip skeleton polyethylene composite pipe according to claim 1, characterized in that: The surface of the strip steel belt is provided with reinforcing ribs.

5. The novel steel-strip skeleton polyethylene composite pipe according to claim 1, characterized in that: The strip steel belt has a width of 4mm-6mm and a thickness of 0.8mm-1.2mm.

6. The novel steel-strip skeleton polyethylene composite pipe according to claim 1, characterized in that: The preset spiral pitch is 3mm-9mm.

7. The novel steel-strip skeleton polyethylene composite pipe according to claim 1, characterized in that: Also included is a second reinforcement layer disposed between the first reinforcement layer and the outer polyethylene layer.

8. The novel steel-strip skeleton polyethylene composite pipe according to claim 7, characterized in that: The second reinforcement layer includes a steel mesh and a second resin layer. The steel mesh is wrapped around the surface of the first resin layer to form a steel mesh skeleton. The second resin layer is formed on the surface of the steel belt skeleton. The outer polyethylene layer is arranged on the surface of the second resin layer.

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