PE pipe with good anti-cracking and anti-extrusion performance

Abstract

The utility model provides a PE pipe with good anti-cracking and anti-extrusion performance, which relates to the technical field of PE pipes, and comprises an inner pipe, a braid layer is arranged on the outer wall of the inner pipe, an outer pipe is arranged on the outer wall of the braid layer, reinforcing ribs are arranged in the inner pipe, the inner pipe consists of a polypropylene layer and a polyethylene layer, and the outer pipe consists of a bubble interlayer. The polypropylene layer is in contact with circulating water, the polypropylene layer is cleaner and more stable compared with the polyethylene layer, the integrally-formed reinforcing ribs are connected more tightly, meanwhile, manufacturing is convenient, the materials are the same, and the internal water quality cannot be affected; the multiple bent reinforcing ribs can provide certain transverse tension when the pipe body is bent, the bubble interlayer made of the multiple bubble polyethylene can effectively bear extrusion, bubbles can deform better during extrusion, and therefore the effect that the interior of the pipe body is cleaner while the better anti-cracking and anti-extrusion performance is achieved is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of PE pipe technology, and more specifically, it relates to a PE pipe with good crack resistance and extrusion resistance. Background Technology

[0002] PE pipes are plastic pipes made of polyethylene and other materials. Generally, PE pipes are used for water supply in temperatures below 40°C and cannot be used for hot water transportation. The plastic pipe industry has initially formed, mainly based on polyvinyl chloride (PVC), polyethylene (PE), and polypropylene (PP-R) pipes. Among them, polyethylene (PE) pipes are widely used in building water supply, building drainage, buried drainage pipes, building heating, gas transmission and distribution, electrical and telecommunications protection conduits, industrial pipes, and agricultural pipes due to their unique advantages.

[0003] The existing publication number CN217455151U discloses a PE pipe with good crack resistance and compression resistance. Although the compression-resistant layer, elastic rubber layer, OM rubber layer, ramie fiber layer and reinforcing ribs work together to resist compression, it avoids the situation where the existing PE pipe does not have compression resistance and thus the PE pipe is easily damaged when it is squeezed.

[0004] Based on the above, the inventors have discovered the following problems: However, pipes are usually used to transport drinking water. When drinking water is soaked in the pipes for a long time, the use of base layers and reinforcing ribs inside the pipes will affect the water quality. Furthermore, the PE pipes are reinforced by multiple vertical reinforcing ribs that are fixedly installed inside, but this does not achieve good anti-compression function and also wastes resources.

[0005] Therefore, in view of this, we will study and improve the existing structure and its shortcomings to provide a PE pipe with good crack resistance and compression resistance, in order to achieve a more practical value. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a PE pipe with good crack resistance and compression resistance. This solves the problems of current pipes where the direct use of a base layer and reinforcing ribs affects water quality, and multiple vertical reinforcing ribs do not achieve good compression resistance, while also wasting resources.

[0007] This utility model provides a PE pipe with good crack resistance and extrusion resistance, which is achieved by the following specific technical means:

[0008] A PE pipe with good crack resistance and compression resistance includes an inner pipe, a braided layer on the outer wall of the inner pipe, an outer pipe on the outer wall of the braided layer, and reinforcing ribs inside the inner pipe. The inner pipe is composed of a polypropylene layer and a polyethylene layer, and the outer pipe is composed of a bubble separator, a crack-resistant fiber layer, and a polytetrafluoroethylene layer.

[0009] Furthermore, the polypropylene layer is located on the side of the inner tube near the middle, the polyethylene layer is located on the other side of the inner tube, and the thickness of the polypropylene layer is greater than the thickness of the reinforcing rib.

[0010] Furthermore, the bubble spacer is made of polyethylene with multiple bubbles in the center, and the multiple bubbles are arranged in a equidistant, filled manner in the bubble spacer.

[0011] Furthermore, the number of reinforcing ribs is 6-8, and the reinforcing ribs are arranged in a curved shape, with multiple reinforcing ribs arranged in a circumferentially equidistant pattern.

[0012] Furthermore, the reinforcing ribs are made by spiraling downwards inside the inner tube using a heating ring with a corresponding number of grooves.

[0013] Furthermore, the braided layer is laid entirely on the outside of the inner tube and connected by heat fusion, and the braided layer is also connected to the outer tube by heat fusion.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this utility model, all the polypropylene layers that come into contact with the flowing water are polypropylene layers. Compared with polyethylene layers, polypropylene layers are cleaner and more stable. The integrally made reinforcing ribs are more tightly connected. At the same time, they are easy to manufacture and the same material will not affect the internal water quality. Multiple curved reinforcing ribs can provide a certain lateral tensile force when the pipe is bent. Multiple bubble polyethylene bubble separators can effectively withstand compression. During compression, the bubbles deform better, thereby achieving better crack resistance and compression resistance while keeping the inside of the pipe cleaner.

[0016] 2. In this utility model, the inner tube and the outer tube are connected by a braided layer. When bent or squeezed, the inner tube and the outer tube deform respectively, resulting in better load-bearing capacity. Multiple curved reinforcing ribs can also provide reaction force when the tube body is stretched vertically, thereby achieving more effective prevention of stretching. It is integrally formed with the tube body, and has the effect of crack resistance, compression resistance and a certain tensile resistance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 yes Figure 1An enlarged schematic diagram of the structure of part A.

[0019] Figure 3 This is a cross-sectional structural diagram of the tube body of this utility model.

[0020] Figure 4 This is a schematic diagram of the layer structure of the inner tube of this utility model.

[0021] Figure 5 This is a schematic diagram of the layer structure of the outer tube of this utility model.

[0022] The correspondence between the component names in the diagram and the attached drawing numbers is as follows:

[0023] 1. Inner tube; 11. Polypropylene layer; 12. Polyethylene layer; 2. Braided layer; 3. Outer tube; 31. Bubble layer; 32. Crack-resistant fiber layer; 33. Polytetrafluoroethylene layer; 4. Reinforcing rib. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; in addition, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Example:

[0027] As attached Figure 1 To be continued Figure 5 As shown:

[0028] This utility model provides a PE pipe with good crack resistance and compression resistance, including an inner pipe 1. The inner pipe 1 is characterized by having a braided layer 2 on its outer wall, an outer pipe 3 on the outer wall of the braided layer 2, and reinforcing ribs 4 inside the inner pipe 1. The inner pipe 1 is composed of a polypropylene layer 11 and a polyethylene layer 12, and the outer pipe 3 is composed of a bubble separator 31, a crack-resistant fiber layer 32, and a polytetrafluoroethylene layer 33.

[0029] Among them, the polypropylene layer 11 is located on the side of the inner tube 1 near the middle, and the polyethylene layer 12 is located on the other side of the inner tube 1. The thickness of the polypropylene layer 11 is greater than the thickness of the reinforcing rib 4, so that the inner tube 1 is in contact with the flowing water, and the polypropylene layer 11 is cleaner and more stable than the polyethylene layer 12.

[0030] Among them, the bubble separator 21 is made of polyethylene with multiple bubbles in the middle. The multiple bubbles are located in the bubble separator 31 and are arranged in a filling and equidistant manner. The bubble separator 31 made of polyethylene with multiple bubbles can effectively withstand compression, and the bubbles can deform better during compression.

[0031] The number of reinforcing ribs 4 is 6-8, and the reinforcing ribs 4 are arranged in a curved shape. Multiple reinforcing ribs 4 are arranged in a circumferentially equidistant shape. The curved reinforcing ribs 4 can provide a certain lateral tensile force when the tube is bent, and can also provide a reaction force when it is stretched vertically.

[0032] Among them, the reinforcing rib 4 is made by spiraling down inside the inner tube 1 using a heating ring with a corresponding number of grooves. The integrally made reinforcing rib 4 has a tighter connection, and is easy to manufacture and the same material will not affect the internal water quality.

[0033] The braided layer 2 is laid on the outside of the inner tube 1 and connected by heat fusion. The braided layer 2 is also connected to the outer tube 3 by heat fusion. The braided layer 2 connects the inner tube 1 and the outer tube 3. When bent or squeezed, the inner tube 1 and the outer tube 3 deform respectively, resulting in better load-bearing capacity.

[0034] The specific usage and function of this embodiment are as follows:

[0035] In this invention, all the polypropylene layer 11 that comes into contact with the flowing water is the polypropylene layer 11. The polypropylene layer 11 is cleaner and more stable than the polyethylene layer 12. The integrally made reinforcing rib 4 is more tightly connected. At the same time, it is easy to manufacture and the same material will not affect the internal water quality.

[0036] Multiple curved reinforcing ribs 4 provide a certain lateral tensile force when the tube is bent, and also provide a reaction force when it is stretched vertically. The inner tube 1 and the outer tube 3 are connected by the braided layer 2. When bent or squeezed, the inner tube 1 and the outer tube 3 deform respectively, resulting in better load-bearing capacity. The bubble spacer 31 made of multiple bubble polyethylene can effectively withstand compression. When squeezed, the bubbles deform better, giving the tube a better anti-crack and anti-compression effect.

[0037] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A PE pipe with good crack resistance and compression resistance, comprising an inner pipe (1), characterized in that: The outer wall of the inner tube (1) is provided with a woven layer (2), the outer wall of the woven layer (2) is provided with an outer tube (3), the inner tube (1) is internally provided with a reinforcing rib (4), the inner tube (1) is composed of a polypropylene layer (11) and a polyethylene layer (12), and the outer tube (3) is composed of a bubble partition layer (31), a crack-resistant fiber layer (32) and a polytetrafluoroethylene layer (33).

2. The PE pipe according to claim 1, wherein: the PE pipe has a crack resistance and an extrusion resistance. The polypropylene layer (11) is located on one side of the inner tube (1) near the middle, the polyethylene layer (12) is located on the other side of the inner tube (1), and the thickness value of the polypropylene layer (11) is greater than the thickness value of the reinforcing rib (4).

3. The PE pipe according to claim 1, wherein: the PE pipe has a crack resistance and an extrusion resistance. The bubble partition layer (31) is made of polyethylene with a plurality of bubbles arranged in the middle, and the plurality of bubbles are arranged in a filling equidistant manner in the bubble partition layer (31).

4. The PE pipe according to claim 1, wherein: the PE pipe has a crack resistance and an extrusion resistance. The reinforcing rib (4) is arranged in a number of 6-8, and the reinforcing rib (4) is arranged in a curved shape, and a plurality of the reinforcing rib (4) is arranged in a circumferential equidistant manner.

5. The PE pipe with good crack resistance and extrusion resistance as described in claim 1, characterized in that: The reinforcing rib (4) is made by spirally descending in the inner tube (1) through a heating ring with a corresponding number of grooves.

6. The PE pipe according to claim 1, wherein: the PE pipe has a crack growth resistance of 0.1 cm or less. The woven layer (2) is integrally laid on the outside of the inner tube (1) and connected by hot melting, and the woven layer (2) and the outer tube (3) are connected by hot melting. ​

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