Stretch-resistant PVC (polyvinyl chloride) pipe

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) pipes, in particular to a tensile PVC pipe which comprises a high-toughness inner layer, a first connecting pipe and a second connecting pipe. The outer side wall of the high-toughness inner layer is fixedly connected with a concave-convex structure layer, the first connecting pipe is fixedly connected to one end of the high-toughness inner layer, the second connecting pipe is fixedly connected to the other end of the high-toughness inner layer, and the end, close to the high-toughness inner layer, of the first connecting pipe is fixedly connected with a wear-resistant outer layer. The high-toughness inner layer preliminarily disperses tensile stress, the concave-convex structure layer is in butt joint with the recesses of the high-toughness inner layer through the protrusions to enhance binding force, the net-shaped reinforcing layer further disperses multidirectional tensile stress, and the fiber spiral layer provides additional support for the wear-resistant outer layer and effectively disperses transmitted tensile stress. Through the synergistic effect of the layers of different materials and structures, step-by-step dispersion of the tensile stress by the PVC pipe is realized.

Description

Technical Field

[0001] This utility model relates to the field of PVC pipe technology, and in particular to a tensile-resistant PVC pipe. Background Technology

[0002] PVC pipes, as a commonly used piping material, are widely used in construction, water supply and drainage, chemical industry, agricultural irrigation and other fields due to their excellent corrosion resistance, light weight and easy installation. With the diversification of usage environment and load conditions, the performance of PVC pipes under different working conditions is particularly important, especially when subjected to tensile stress. In order to ensure that PVC pipes maintain stability under high load and long-term use, improving their tensile strength has become an important technical requirement.

[0003] Existing PVC pipes lack a structure that can progressively disperse tensile stress, making them prone to localized tensile stress concentration during use. This results in stress not being evenly distributed throughout the pipe, thus affecting its overall tensile strength. Furthermore, some PVC pipes, due to different manufacturing processes, do not have built-in connectors. In such cases, hot-melt or adhesive bonding methods are typically used for connection. While hot-melt connections can ensure the pipe's airtightness, the process damages the fiber structure within the PVC pipe, thereby reducing its overall strength and tensile properties.

[0004] Therefore, addressing the existing problems of PVC pipes, this invention features a high-toughness inner layer with high mechanical strength and toughness, capable of withstanding significant physical loads and initially dispersing tensile stress from within. The concave-convex structure layer, with its protrusions connecting to the recesses of the high-toughness inner layer, enhances bonding and provides additional support. The mesh reinforcement layer further disperses multi-directional tensile stress, enhancing overall structural strength. Furthermore, a fiber spiral layer is incorporated within the wear-resistant outer layer, providing additional support and effectively dispersing transmitted tensile stress. Annular reinforcing ribs further enhance the impact resistance and wear resistance of the wear-resistant outer layer. This multi-layered structural design, through the synergistic effect of different materials and structural levels, achieves gradual dispersion of tensile stress in the PVC pipe, significantly improving tensile performance. Direct connection to external pipelines via front and rear flanges eliminates the need for heat fusion or other connection methods, thus avoiding damage to the internal fiber structure of the PVC pipe. Utility Model Content

[0005] To overcome the common problem of tensile PVC pipes lacking a structure that gradually disperses tensile stress, leading to stress concentration and affecting overall tensile performance, and also because some PVC pipes do not have built-in connection structures due to differences in manufacturing processes, requiring the use of heat fusion for connection, the heat fusion process can damage the internal fiber structure of the pipe, reducing strength and tensile performance.

[0006] The technical solution of this utility model is as follows: a tensile-resistant PVC pipe, comprising a high-toughness inner layer, a first connecting pipe, and a second connecting pipe; a concave-convex structure layer is fixedly connected to the outer wall of the high-toughness inner layer; the first connecting pipe is fixedly connected to one end of the high-toughness inner layer, and the second connecting pipe is fixedly connected to the other end of the high-toughness inner layer; the first connecting pipe is fixedly connected to one end of the concave-convex structure layer, and the second connecting pipe is fixedly connected to the other end of the concave-convex structure layer; a wear-resistant outer layer is fixedly connected to one end of the first connecting pipe near the high-toughness inner layer, and the wear-resistant outer layer is fixedly connected to one end of the second connecting pipe near the high-toughness inner layer.

[0007] Preferably, the high-toughness inner layer has a recess on its outer sidewall, and the high-toughness inner layer is made of TPU material; the concave-convex structure layer has a protrusion on its inner sidewall, and the concave-convex structure layer is made of high-density polyethylene material; the wear-resistant outer layer is located near the outer sidewall of the concave-convex structure layer, and the wear-resistant outer layer is made of polyvinyl chloride material.

[0008] Preferably, a mesh reinforcement layer is fixedly connected to the inner wall of the wear-resistant outer layer. The side of the mesh reinforcement layer away from the wear-resistant outer layer is fixedly connected to the outer wall of the concave-convex structure layer. One end of the mesh reinforcement layer is fixedly connected to the end of the first connecting tube near the high-toughness inner layer, and the other end of the mesh reinforcement layer is fixedly connected to the end of the second connecting tube near the high-toughness inner layer. The mesh reinforcement layer is made of aramid fiber.

[0009] Preferably, a fiber spiral layer is fixedly connected to the inside of the wear-resistant outer layer, the fiber spiral layer is wrapped around the inside of the wear-resistant outer layer, the fiber spiral layer is made of fiber-reinforced polymer material, and annular reinforcing ribs are fixedly connected to the outer side wall of the wear-resistant outer layer, the annular reinforcing ribs are equidistantly installed on the outer side wall of the annular reinforcing ribs.

[0010] Preferably, a front connecting shell is fixedly connected to the outer wall of the first connecting pipe, the front connecting shell is fixedly connected to the end of the wear-resistant outer layer away from the second connecting pipe, and a front flange is fixedly connected to the end of the first connecting pipe away from the high-toughness inner layer.

[0011] Preferably, the front connecting shell is fixedly connected to one end of the front flange near the first connecting pipe, and a front sealing ring is fixedly connected to the inner wall of the front flange, the front sealing ring being fixedly connected to one end of the first connecting pipe near the front flange.

[0012] Preferably, a rear connecting shell is fixedly connected to the outer wall of the second connecting pipe, the rear connecting shell is fixedly connected to the end of the wear-resistant outer layer away from the first connecting pipe, and a rear flange is fixedly connected to the end of the second connecting pipe away from the high-toughness inner layer.

[0013] Preferably, the rear connecting shell is fixedly connected to one end of the rear flange near the second connecting pipe, and a rear sealing ring is fixedly connected to the inner wall of the rear flange, the rear sealing ring being fixedly connected to one end of the second connecting pipe near the rear flange.

[0014] The beneficial effects of this utility model are:

[0015] 1. When PVC pipes are ready for use, first, align the front flange and the rear flange with the two ends of the external pipe respectively, and install them together through flange connection. At this time, the front sealing ring and the rear sealing ring are tightly against the external pipe, providing a good sealing effect and enhancing the sealing performance of PVC pipes, thereby realizing the quick connection of PVC pipes, avoiding the use of heat fusion or other complex connection methods, and improving the ease of installation.

[0016] 2. When the PVC pipe is put into use, the fluid first enters the first connecting pipe through the front flange, then enters the high-toughness inner layer, then passes through the second connecting pipe, and finally flows out from the rear flange, completing the fluid transportation and realizing the smooth transmission of liquid through the PVC pipe.

[0017] 3. During the use of PVC pipes, firstly, the high-toughness inner layer of TPU material initially disperses tensile stress. TPU material has high mechanical strength and toughness, and can withstand large physical loads. The concave-convex structure layer completely wraps the high-toughness inner layer, and the protrusions on its inner wall connect with the depressions on the outer wall of the high-toughness inner layer, enhancing the bonding force between the two and providing additional support. The mesh reinforcement layer further disperses multi-directional tensile stress and enhances the overall structural strength. The fiber spiral layer provides additional support for the wear-resistant outer layer and effectively disperses the tensile stress transmitted to the wear-resistant outer layer. The annular reinforcing ribs enhance the impact resistance and wear resistance of the wear-resistant outer layer. Under the synergistic effect of these different materials and structures, the PVC pipe can disperse tensile stress layer by layer, significantly improving the overall tensile performance. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.

[0019] Figure 2 The diagram shown is a schematic representation of the internal structure of this utility model.

[0020] Figure 3 The diagram shown is a cross-sectional view of the present invention.

[0021] Figure 4 The diagram shown is a schematic representation of the high-toughness inner layer structure of this utility model.

[0022] Figure 5 The diagram shown is a schematic representation of the wear-resistant outer layer structure of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. High-toughness inner layer; 2. Textured structure layer; 3. Wear-resistant outer layer; 301. Mesh reinforcement layer; 302. Fiber spiral layer; 303. Annular reinforcing rib; 4. First connecting pipe; 401. Front connecting shell; 402. Front flange; 403. Front sealing ring; 5. Second connecting pipe; 501. Rear connecting shell; 502. Rear flange; 503. Rear sealing ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 This utility model provides a technical solution: a tensile-resistant PVC pipe, including a high-toughness inner layer 1, a first connecting pipe 4, and a second connecting pipe 5; a concave-convex structure layer 2 is fixedly connected to the outer wall of the high-toughness inner layer 1, the first connecting pipe 4 is fixedly connected to one end of the high-toughness inner layer 1, the second connecting pipe 5 is fixedly connected to the other end of the high-toughness inner layer 1, the first connecting pipe 4 is fixedly connected to one end of the concave-convex structure layer 2, the second connecting pipe 5 is fixedly connected to the other end of the concave-convex structure layer 2, a wear-resistant outer layer 3 is fixedly connected to the end of the first connecting pipe 4 near the high-toughness inner layer 1, and the wear-resistant outer layer 3 is fixedly connected to the end of the second connecting pipe 5 near the high-toughness inner layer 1.

[0026] The high-toughness inner layer 1 has a recess on its outer side wall. The high-toughness inner layer 1 is made of TPU. The concave-convex structure layer 2 has a protrusion on its inner side wall. The concave-convex structure layer 2 is made of high-density polyethylene. The wear-resistant outer layer 3 is located near the outer side wall of the concave-convex structure layer 2. The wear-resistant outer layer 3 is made of polyvinyl chloride. The concave-convex structure layer 2 completely wraps the high-toughness inner layer 1 and enhances the interlayer bonding force through its protrusions, reducing additional adhesion.

[0027] A mesh reinforcement layer 301 is fixedly connected to the inner wall of the wear-resistant outer layer 3. The side of the mesh reinforcement layer 301 away from the wear-resistant outer layer 3 is fixedly connected to the outer wall of the concave-convex structure layer 2. One end of the mesh reinforcement layer 301 is fixedly connected to the end of the first connecting pipe 4 near the high-toughness inner layer 1, and the other end of the mesh reinforcement layer 301 is fixedly connected to the end of the second connecting pipe 5 near the high-toughness inner layer 1. The mesh reinforcement layer 301 is made of aramid fiber, which effectively disperses and transmits tensile stress, prevents local stress concentration, and improves the overall tensile strength of the PVC pipe.

[0028] A fiber spiral layer 302 is fixedly connected inside the wear-resistant outer layer 3. The fiber spiral layer 302 is wrapped around the inside of the wear-resistant outer layer 3. The fiber spiral layer 302 is made of fiber-reinforced polymer material. A ring-shaped reinforcing rib 303 is fixedly connected to the outer wall of the wear-resistant outer layer 3. The ring-shaped reinforcing rib 303 is installed at equal intervals on the outer wall of the ring-shaped reinforcing rib 303. The fiber spiral layer 302 disperses the tensile stress transmitted to the wear-resistant outer layer 3, thereby enhancing its support and mechanical strength. The ring-shaped reinforcing rib 303 effectively improves the impact resistance of the wear-resistant outer layer 3.

[0029] A front connecting shell 401 is fixedly connected to the outer wall of the first connecting pipe 4. The front connecting shell 401 is fixedly connected to the end of the wear-resistant outer layer 3 away from the second connecting pipe 5. A front flange 402 is fixedly connected to the end of the first connecting pipe 4 away from the high-toughness inner layer 1. The front flange 402 realizes the flange connection with the external pipeline, optimizing the overall connection method of the PVC pipe.

[0030] The front connecting shell 401 is fixedly connected to the end of the front flange 402 near the first connecting pipe 4. A front sealing ring 403 is fixedly connected to the inner wall of the front flange 402. The front sealing ring 403 is fixedly connected to the end of the first connecting pipe 4 near the front flange 402. The front sealing ring 403 effectively enhances the sealing effect between the external pipe and the PVC pipe, preventing liquid leakage during use.

[0031] A rear connecting shell 501 is fixedly connected to the outer wall of the second connecting pipe 5. The rear connecting shell 501 is fixedly connected to the end of the wear-resistant outer layer 3 away from the first connecting pipe 4. A rear flange 502 is fixedly connected to the end of the second connecting pipe 5 away from the high-toughness inner layer 1. The rear flange 502 enables the external pipeline to be quickly flanged with the PVC pipe, improving the firmness of the connection at both ends of the PVC pipe.

[0032] The rear connecting shell 501 is fixedly connected to the rear flange 502 at one end near the second connecting pipe 5. A rear sealing ring 503 is fixedly connected to the inner wall of the rear flange 502. The rear sealing ring 503 is fixedly connected to the end of the second connecting pipe 5 near the rear flange 502. The rear sealing ring 503 can effectively seal the PVC pipe during use, reduce the risk of liquid leakage, and thus improve the overall reliability of the PVC pipe.

[0033] Working principle: According to Figures 1 to 3When the PVC pipe is ready for use, first, align the front flange 402 on the front connecting shell 401 with the external pipe on one side and install it through the flange connection. Then, align the rear flange 502 on the rear connecting shell 501 with the external pipe on the other side and install it through the flange connection as well. At this time, the front sealing ring 403 and the rear sealing ring 503 are tightly attached to the external pipe to ensure a good sealing effect and enhance the sealing performance of the PVC pipe, thereby realizing the quick connection of the PVC pipe, avoiding the use of heat fusion or other complex connection methods, and improving the ease of installation.

[0034] according to Figures 1 to 3 When the PVC pipe is put into use, firstly, the fluid in the external pipeline enters the first connecting pipe 4 through the front flange 402, then enters the interior of the high toughness inner layer 1, then passes through the second connecting pipe 5, and finally flows out from the rear flange 502 to complete the fluid transportation.

[0035] according to Figures 3 to 5 During the use of PVC pipes, when the PVC pipe is subjected to tensile stress, the high-toughness inner layer 1, made of TPU material, has high mechanical strength and toughness, and can withstand a large physical load, thus playing a role in initially dispersing tensile stress. The concave-convex structure layer 2, made of high-density polyethylene, completely wraps the high-toughness inner layer 1, and the protrusions on its inner wall connect with the depressions on the outer wall of the high-toughness inner layer 1, enhancing the bonding force between the two and preventing peeling, while also providing additional support. The mesh reinforcement layer 301, made of interwoven aramid fibers, further disperses multi-directional tensile stress. The wear-resistant outer layer 3 has a fiber spiral layer 302 inside, which provides additional support for the wear-resistant outer layer 3 and effectively disperses the tensile stress transmitted to it. In addition, the annular reinforcing rib 303 enhances the impact resistance of the wear-resistant outer layer 3 to the external environment and improves its wear resistance, enabling the PVC pipe to maintain good stability in complex environments. Under the synergistic effect of different materials and structures, the PVC pipe can disperse tensile stress layer by layer, significantly improving the overall tensile performance.

[0036] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile-resistant PVC pipe, comprising a high-toughness inner layer (1), a first connecting pipe (4), and a second connecting pipe (5); characterized in that: A textured structure layer (2) is fixedly connected to the outer wall of the high-toughness inner layer (1). The first connecting tube (4) is fixedly connected to one end of the high-toughness inner layer (1), and the second connecting tube (5) is fixedly connected to the other end of the high-toughness inner layer (1). The first connecting tube (4) is fixedly connected to one end of the textured structure layer (2), and the second connecting tube (5) is fixedly connected to the other end of the textured structure layer (2). A wear-resistant outer layer (3) is fixedly connected to one end of the first connecting tube (4) near the high-toughness inner layer (1). The wear-resistant outer layer (3) is fixedly connected to one end of the second connecting tube (5) near the high-toughness inner layer (1).

2. The tensile-resistant PVC pipe according to claim 1, characterized in that: The high-toughness inner layer (1) has a recess on its outer sidewall. The high-toughness inner layer (1) is made of TPU. The concave-convex structure layer (2) has a protrusion on its inner sidewall. The concave-convex structure layer (2) is made of high-density polyethylene. The wear-resistant outer layer (3) is located near the outer sidewall of the concave-convex structure layer (2). The wear-resistant outer layer (3) is made of polyvinyl chloride.

3. The tensile-resistant PVC pipe according to claim 1, characterized in that: A mesh reinforcement layer (301) is fixedly connected to the inner wall of the wear-resistant outer layer (3). The side of the mesh reinforcement layer (301) away from the wear-resistant outer layer (3) is fixedly connected to the outer wall of the concave-convex structure layer (2). One end of the mesh reinforcement layer (301) is fixedly connected to the end of the first connecting tube (4) near the high-toughness inner layer (1). The other end of the mesh reinforcement layer (301) is fixedly connected to the end of the second connecting tube (5) near the high-toughness inner layer (1). The mesh reinforcement layer (301) is made of aramid fiber.

4. A tensile-resistant PVC pipe according to claim 3, characterized in that: A fiber spiral layer (302) is fixedly connected inside the wear-resistant outer layer (3). The fiber spiral layer (302) is wrapped around the inside of the wear-resistant outer layer (3). The fiber spiral layer (302) is made of fiber-reinforced polymer material. A ring-shaped reinforcing rib (303) is fixedly connected to the outer wall of the wear-resistant outer layer (3). The ring-shaped reinforcing rib (303) is equidistantly installed on the outer wall of the ring-shaped reinforcing rib (303).

5. A tensile-resistant PVC pipe according to claim 1, characterized in that: A front connecting shell (401) is fixedly connected to the outer wall of the first connecting pipe (4). The front connecting shell (401) is fixedly connected to the end of the wear-resistant outer layer (3) away from the second connecting pipe (5). A front flange (402) is fixedly connected to the end of the first connecting pipe (4) away from the high-toughness inner layer (1).

6. A tensile-resistant PVC pipe according to claim 5, characterized in that: The front connecting shell (401) is fixedly connected to the end of the front flange (402) near the first connecting pipe (4). A front sealing ring (403) is fixedly connected to the inner wall of the front flange (402). The front sealing ring (403) is fixedly connected to the end of the first connecting pipe (4) near the front flange (402).

7. A tensile-resistant PVC pipe according to claim 1, characterized in that: A rear connecting shell (501) is fixedly connected to the outer wall of the second connecting pipe (5). The rear connecting shell (501) is fixedly connected to the end of the wear-resistant outer layer (3) away from the first connecting pipe (4). A rear flange (502) is fixedly connected to the end of the second connecting pipe (5) away from the high-toughness inner layer (1).

8. A tensile-resistant PVC pipe according to claim 7, characterized in that: The rear connecting shell (501) is fixedly connected to one end of the rear flange (502) near the second connecting pipe (5). A rear sealing ring (503) is fixedly connected to the inner wall of the rear flange (502). The rear sealing ring (503) is fixedly connected to one end of the second connecting pipe (5) near the rear flange (502).

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