PE pipe with good flame retardant performance

Abstract

The utility model discloses a good PE pipe of flame -retardant performance relates to PE pipe technical field, including first PE pipe, the inside of first PE pipe is connected with second PE pipe, and one side between first PE pipe and second PE pipe is provided with installation box, the outside of first PE pipe and second PE pipe all is provided with flame -retardant mechanism, the flame -retardant mechanism includes flame -retardant layer, and the flame -retardant layer sets up in the inside of first PE pipe and second PE pipe, the outside of first PE pipe and second PE pipe all is provided with the partition block. The good PE pipe of flame -retardant performance, through being provided with the flame -retardant layer in the inside of first PE pipe and second PE pipe can play the role of preventing and protecting flame -retardant, promotes the service life of first PE pipe and second PE pipe, avoids the damage situation of first PE pipe and second PE pipe when meeting the fire, and the material quality of flame -retardant layer itself can select nanometer antibacterial flame -retardant composite layer to make the flame -retardant performance of first PE pipe and second PE pipe can stably keep.

Description

Technical Field

[0001] This utility model relates to the field of PE pipe technology, specifically to a PE pipe with good flame retardant properties. Background Technology

[0002] Polyethylene pipes are pipes made of polyethylene material. They have the characteristics of high strength, corrosion resistance, non-toxicity, wear resistance, and good flexibility. They are widely used in water supply and drainage, gas supply, agricultural irrigation, industrial sewage discharge and other fields. However, traditional PE pipes are only suitable for use in a temperature range of -60℃ to 60℃. Therefore, they have poor flame retardant properties. In the event of a fire, the pipe body may be damaged, affecting its service life.

[0003] To overcome the aforementioned shortcomings, existing technology (Chinese patent CN218914012U, published on April 25, 2023) provides a PE pipe with good flame retardancy, comprising a PE pipe body, a flame retardant layer coated on the surface of the PE pipe body, and a wear-resistant layer coated on the surface of the flame retardant layer. The flame retardant layer includes a polyester coating layer, a seaweed coating layer, and a polyvinyl chloride coating layer. The wear-resistant layer includes a titanium nitride coating layer, a fluorocarbon coating layer, and a polyamide coating layer. The inner surface of the polyester coating layer is coated on the outer surface of the seaweed coating layer. By incorporating the polyester coating layer, seaweed coating layer, and polyvinyl chloride coating layer, the problem of poor flame retardancy in existing PE pipe bodies, which makes them easily ignited in a fire, leading to damage and significantly reducing their service life, is solved. The titanium nitride coating layer, fluorocarbon coating layer, and polyamide coating layer achieve wear resistance, preventing wear during use and greatly improving the service life of the PE pipe body.

[0004] The aforementioned institutions use coatings to prevent the pipe body from igniting and extend its service life. However, in actual use, because the pipe needs to be adapted to different temperature environments, the pipe joints may become loose due to changes in external temperature, affecting the stability of the pipe joints. Utility Model Content

[0005] The purpose of this utility model is to provide a PE pipe with good flame retardant properties, in order to solve the problem mentioned in the background art that the traditional PE pipe is applicable to a temperature range of -60℃ to 60℃, and therefore has poor flame retardant properties. In the event of a fire, the pipe body may be damaged, affecting the service life of the pipe body.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PE pipe with good flame retardant properties, comprising a first PE pipe, a second PE pipe being snapped into the inner side of the first PE pipe, an installation box being provided on one side between the first PE pipe and the second PE pipe, and a mating plate being provided on the side of the installation box and the side of the second PE pipe, with fastening bolts threaded onto the surface of the mating plate; a flame retardant mechanism being provided on the outer side of both the first PE pipe and the second PE pipe, and a mating mechanism for fixing the first PE pipe and the second PE pipe being provided on the inner side of the installation box.

[0007] Furthermore, the flame-retardant mechanism includes a flame-retardant layer, which is disposed on the inner side of the first PE pipe and the second PE pipe. A partition block is disposed on the outer side of both the first PE pipe and the second PE pipe, and a wear-resistant layer is disposed on the outer side of the partition block.

[0008] Furthermore, the cross-section of the separator is semi-circular, and the separators are distributed at equal angles on the outer sides of the first PE pipe and the second PE pipe.

[0009] Furthermore, the outer side of the separator block is in contact with the inner side of the wear-resistant layer, and the inner side of the separator block is in contact with the outer sides of the first PE pipe and the second PE pipe.

[0010] Furthermore, the docking mechanism includes a second elastic airbag, which is disposed inside the mounting box. A movable plate is installed on the side of the second elastic airbag, and a first elastic airbag is disposed on the left side of the movable plate. The second elastic airbag and the first elastic airbag are connected by a flexible hose.

[0011] Furthermore, connecting springs are installed on the sides of the movable plate, and the connecting springs are distributed at equal angles on the sides of the movable plate.

[0012] Furthermore, a memory metal block is provided on the side of the second elastic airbag near the mounting box, and the memory metal block is deformed into an arc shape and reset into a horizontal state.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a flame-retardant layer inside the first PE pipe and the second PE pipe, a protective flame-retardant function can be provided, thereby improving the service life of the first PE pipe and the second PE pipe and preventing damage to the first PE pipe and the second PE pipe in the event of a fire. The flame-retardant layer itself can be made of nano antibacterial flame-retardant composite layer, so that the flame-retardant performance of the first PE pipe and the second PE pipe can be maintained stably.

[0014] Furthermore, the partition block set on the outside of the second PE pipe can separate the second PE pipe from the wear-resistant layer. The space and thickness separated by the partition block can prevent the outer surfaces of the first PE pipe and the second PE pipe from directly contacting the outside environment and the wear-resistant layer, thus extending the service life of the first PE pipe and the second PE pipe.

[0015] Furthermore, the wear-resistant layer can shield and protect the outer sides of the first and second PE pipes, preventing the pipe bodies from being damaged due to stress when subjected to impact, thus enabling the use of the first and second PE pipes more stably.

[0016] 2. Insert the side of the first PE tube into the interior of the second PE tube, so that the two mating plates are aligned. Then, pass the fastening bolt through the mating plate and thread it onto the mating plate to fix the position of the first and second PE tubes, preventing them from becoming loose. At the same time, the side of the second PE tube extends into the interior of the mounting box and squeezes the movable plate, causing the movable plate to simultaneously squeeze the second elastic airbag. This allows the gas inside the second elastic airbag to be delivered to the interior of the first elastic airbag through the hose. The first elastic airbag can then press the outside of the second PE tube, thereby reducing the gap between the second and first PE tubes and filling the gap.

[0017] Furthermore, at lower temperatures, the shape memory metal block is arc-shaped, allowing it to compress the second elastic air bladder from the inside. This secondary compression of excess gas inside the second elastic air bladder results in a more fully filled first elastic air bladder that compresses both the first and second PE pipes. At higher temperatures, the shape memory metal block is horizontal, preventing secondary compression of the second elastic air bladder. Due to thermal expansion and contraction, the PE pipes expand and become tightly connected at higher temperatures. This allows the overall structure to adapt to different temperature conditions, ensuring the stability of the direct pipe connection. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present utility model.

[0019] Figure 2 This is a frontal sectional view of the present invention.

[0020] Figure 3 This is a side view of the structure of this utility model.

[0021] Figure 4 This is an exploded structural diagram of the docking mechanism of this utility model.

[0022] Figure 5 This is a schematic diagram of the explosion structure of the flame-retardant mechanism of this utility model.

[0023] Figure 6 This is a partially enlarged structural schematic diagram of the docking mechanism of this utility model.

[0024] In the diagram: 1. First PE pipe; 2. Second PE pipe; 3. Mounting box; 4. Connecting plate; 5. Fastening bolt; 6. First elastic airbag; 7. Movable plate; 8. Connecting spring; 9. Hose; 10. Second elastic airbag; 11. Shape memory metal; 12. Flame retardant layer; 13. Separator block; 14. Wear-resistant layer. Detailed Implementation

[0025] 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.

[0026] Example 1: As Figure 1 - Figure 3 and Figure 5 The technical solution shown addresses the problem that traditional PE pipes, applicable only to temperatures ranging from -60℃ to 60℃, have poor flame-retardant properties and may be damaged in the event of a fire, affecting their lifespan. This new flame-retardant PE pipe discloses a flame-retardant mechanism, including a first PE pipe 1, with a second PE pipe 2 interlocked inside the first PE pipe 1. A mounting box 3 is located on one side between the first PE pipe 1 and the second PE pipe 2. Both the side of the mounting box 3 and the side of the second PE pipe 2 are provided with mating plates 4, and the surfaces of the mating plates 4 are threaded with fastening screws. Plug 5; Flame-retardant mechanisms are provided on the outer sides of both the first PE pipe 1 and the second PE pipe 2; the flame-retardant mechanism includes a flame-retardant layer 12, and the flame-retardant layer 12 is provided on the inner side of the first PE pipe 1 and the second PE pipe 2. A partition block 13 is provided on the outer side of both the first PE pipe 1 and the second PE pipe 2, and a wear-resistant layer 14 is provided on the outer side of the partition block 13; the cross-section of the partition block 13 is semi-circular, and the partition blocks 13 are distributed at equal angles on the outer side of the first PE pipe 1 and the second PE pipe 2; the outer side of the partition block 13 is in contact with the inner side of the wear-resistant layer 14, and the inner side of the partition block 13 is in contact with the outer side of the first PE pipe 1 and the second PE pipe 2.

[0027] In this example, the flame-retardant layer 12 inside the first PE pipe 1 and the second PE pipe 2 provides protection and flame retardancy, extending the service life of the first PE pipe 1 and the second PE pipe 2 and preventing damage in the event of a fire. The flame-retardant layer 12 itself can be made of a nano-antibacterial flame-retardant composite layer, thus ensuring the stable flame-retardant performance of the first PE pipe 1 and the second PE pipe 2. The partition block 13 on the outside of the second PE pipe 2 separates the second PE pipe 2 from the wear-resistant layer 14. The space and thickness of the partition block 13 prevent the outer surfaces of the first PE pipe 1 and the second PE pipe 2 from directly contacting the outside environment and the wear-resistant layer 14, thus extending the service life of the first PE pipe 1 and the second PE pipe 2. The wear-resistant layer 14 protects the outside of the first PE pipe 1 and the second PE pipe 2, preventing damage to the pipe body due to force when subjected to impact, thus enabling more stable use of the first PE pipe 1 and the second PE pipe 2.

[0028] Example 2: Figure 1 - Figure 4 and Figure 6 The technical solution shown addresses the issue of potential gaps at pipe joints leading to insufficient tightness and affecting stability during pipe connection. The flame-retardant PE pipe discloses a connection mechanism: the inner side of the mounting box 3 is equipped with a connection mechanism for fixing the first PE pipe 1 and the second PE pipe 2. This mechanism includes a second elastic airbag 10, which is located inside the mounting box 3. A movable plate 7 is installed on the side of the second elastic airbag 10, and a first elastic airbag 6 is located on the left side of the movable plate 7. The second elastic airbag 10 and the first elastic airbag 6 are connected by a flexible hose 9. Connecting springs 8 are installed on the side of the movable plate 7, and these springs are evenly distributed along the side of the movable plate 7.

[0029] In this example, such as Figure 6As shown, the side of the first PE pipe 1 is inserted into the interior of the second PE pipe 2, so that the two mating plates 4 are aligned. Then, the fastening bolt 5 is passed through the mating plate 4 and threaded to it, thereby fixing the position between the first PE pipe 1 and the second PE pipe 2 and preventing loosening. At the same time, the side of the second PE pipe 2 extends into the interior of the mounting box 3 and squeezes the movable plate 7, so that the movable plate 7 simultaneously squeezes the second elastic airbag 10. This causes the gas inside the second elastic airbag 10 to be delivered to the interior of the first elastic airbag 6 through the hose 9. The first elastic airbag 6 can press the outside of the second PE pipe 2, thereby reducing the gap between the second PE pipe 2 and the first PE pipe 1, achieving filling of the gap between the first PE pipe 1 and the second PE pipe 2. Figure 6 As shown, the connecting spring 8 provided on the side of the movable plate 7 can automatically reset after the second elastic airbag 10 loses its pressing pressure, assisting the movable plate 7 in resetting its position. At the same time, the second elastic airbag 10 also returns to its initial state. When disassembling and separating the first PE tube 1 and the second PE tube 2, it can prevent the first elastic airbag 6 from being pressed and thus unable to be disassembled.

[0030] Example 3: Figure 2 , Figure 4 and Figure 6 The technical solution shown is designed to address the problem that, in actual use, pipe connections may become loose due to changes in external temperature, as pipes need to be adapted to different temperature environments. This flame-retardant PE pipe discloses a shape memory metal block 11. The second elastic airbag 10 is provided with a shape memory metal block 11 on the side near the mounting box 3. The shape memory metal block 11 is in an arc-shaped deformation state and in a horizontal reset state.

[0031] In this example, such as Figure 6 As shown, when the temperature is low, the shape memory metal block 11 is arc-shaped, so it can compress the second elastic airbag 10 from the inside. This allows the excess gas inside the second elastic airbag 10 to be compressed a second time, making the first elastic airbag 6 more fully filled and compressing the first PE pipe 1 and the second PE pipe 2. When the temperature is high, the shape memory metal block 11 is horizontal, so it does not compress the second elastic airbag 10 a second time. Also, due to thermal expansion and contraction, the PE pipe itself will expand and be tightly connected when the temperature is high. This allows the overall structure of the connection to adapt to different temperature conditions, ensuring the stability of the direct connection of the pipes.

[0032] 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 PE pipe with good flame retardant properties, comprising a first PE pipe (1), a second PE pipe (2) being snapped onto the inner side of the first PE pipe (1), an installation box (3) being provided on one side between the first PE pipe (1) and the second PE pipe (2), and a butt plate (4) being provided on the side of the installation box (3) and the side of the second PE pipe (2), and a fastening bolt (5) being threaded onto the surface of the butt plate (4). Its features are: Flame-retardant mechanisms are provided on the outer sides of the first PE pipe (1) and the second PE pipe (2), and a docking mechanism for fixing the first PE pipe (1) and the second PE pipe (2) is provided on the inner side of the mounting box (3).

2. The PE pipe with good flame retardant properties according to claim 1, characterized in that: The flame-retardant mechanism includes a flame-retardant layer (12), and the flame-retardant layer (12) is disposed on the inner side of the first PE pipe (1) and the second PE pipe (2). A partition block (13) is disposed on the outer side of the first PE pipe (1) and the second PE pipe (2), and a wear-resistant layer (14) is disposed on the outer side of the partition block (13).

3. The PE pipe with good flame retardant properties according to claim 2, characterized in that: The cross-section of the partition block (13) is semi-circular, and the partition blocks (13) are distributed at equal angles on the outside of the first PE pipe (1) and the second PE pipe (2).

4. The PE pipe with good flame retardant properties according to claim 3, characterized in that: The outer side of the partition block (13) is in contact with the inner side of the wear-resistant layer (14), and the inner side of the partition block (13) is in contact with the outer side of the first PE pipe (1) and the second PE pipe (2).

5. A PE pipe with good flame retardant properties according to claim 4, characterized in that: The docking mechanism includes a second elastic airbag (10), and the second elastic airbag (10) is disposed inside the mounting box (3). A movable plate (7) is installed on the side of the second elastic airbag (10), and a first elastic airbag (6) is disposed on the left side of the movable plate (7). The second elastic airbag (10) and the first elastic airbag (6) are connected by a hose (9).

6. A PE pipe with good flame retardant properties according to claim 5, characterized in that: Connecting springs (8) are installed on the side of the movable plate (7), and the connecting springs (8) are distributed at equal angles on the side of the movable plate (7).

7. A PE pipe with good flame retardant properties according to claim 6, characterized in that: The second elastic airbag (10) is provided with a memory metal block (11) on the side near the mounting box (3), and the memory metal block (11) is in an arc shape when deformed, and the memory metal block (11) is in a horizontal state when reset.

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