Flame-retardant plastic pipe capable of being switched in multiple directions

Abstract

The utility model discloses a flame-retardant plastic pipe capable of being switched in multiple directions, and particularly relates to the technical field of plastic pipes, the flame-retardant plastic pipe comprises a corrugated universal structure, a plastic hose, an interlayer and carbonized filler, the plastic hose is arranged in an inner cavity of the corrugated universal structure, and the carbonized filler is arranged in an inner cavity of the interlayer; according to the utility model, through the flexible characteristics of the corrugated universal structure and the plastic hose, the flexible joint can be flexibly switched in different directions, can be easily bent and adjusted in direction, adapts to a complex installation environment, can effectively disperse stress in a pipeline, and avoids stress concentration at the switched position, so that the risk of pipeline fracture or damage is reduced, and the service life of the pipeline is prolonged. Through the design of the interlayer and the carbonized filler, when a fire disaster occurs, the carbonized filler made of polyimide can form a protective carbonized layer on the outer surface of the pipeline under high-temperature combustion, flame spreading is prevented, flame spreading can be effectively delayed, and a certain heat isolation effect can be provided; the influence of external high temperature on fluid in the hose is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pipes, and more specifically, to a multi-directionally transferable flame-retardant plastic pipe. Background Art

[0002] Plastic pipes are generally made from synthetic resin, typically polyester, with stabilizers, lubricants, and plasticizers added. They are extruded in a pipe-making machine using a "molding" process. They are primarily used for piping in building water supply systems, drainage, exhaust, and sewage pipes, underground drainage systems, stormwater pipes, and conduit for electrical wiring installations.

[0003] After searching, the existing patent (publication number: CN108488526B) discloses a plastic pipe with multi-directional transfer, including a first plastic pipe, a connecting mechanism, a second plastic pipe, a transfer mechanism, a water stop valve, a first protrusion, a second protrusion, a third protrusion and a water stop plug. The first sleeve and the second sleeve are engaged and rotated, the second sleeve and the second plastic pipe are engaged and rotated via the first protrusion, and the first plastic pipe and the first sleeve are threadedly connected, thereby achieving convenient and stable connection. The first connecting pipe, the second type of connecting pipe, the third connecting pipe, the fourth connecting pipe, the fifth connecting pipe, the sixth connecting pipe, the seventh connecting pipe, the eighth connecting pipe and the ninth connecting pipe are interconnected, thereby achieving the transfer of multiple plastic pipes in different directions. A water stop valve is provided on the fifth connecting pipe, and water stop plugs are provided in the first through hole on the second connecting pipe and the second through hole on the ninth connecting pipe, thereby achieving the prevention of water leakage when connecting a limited number of transfer pipes and achieving the transfer function. In the process of realizing the utility model, the inventor found that the prior art has the following problems:

[0004] Existing plastic pipes are usually fixed at certain points. When the pipes turn in multiple directions, additional stress is generated at the fixed points, which leads to local stress concentration and material fatigue, thereby increasing the risk of pipe rupture or leakage. In addition, in high-temperature combustion environments such as fires, the pipes will expand when burned. The material properties of plastic pipes will soften at high temperatures, causing the pipes to deform and lose their original shape, resulting in a decrease in structural strength, cracks or ruptures in the pipes, and fluid leakage.

[0005] Therefore, in order to solve the above problems, a flame-retardant plastic pipe with multi-directional connection is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a flame-retardant plastic pipe with multi-directional connection to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a multi-directional flame-retardant plastic tube, comprising a corrugated universal structure, a plastic hose, an interlayer, and a carbonized filler, wherein a left connecting tube is provided on the left side of the corrugated universal structure, and a right connecting tube is provided on the right side of the corrugated universal structure;

[0008] The plastic hose is arranged in the inner cavity of the corrugated universal structure, the interlayer is arranged between the corrugated universal structure and the plastic hose, and the carbonized filler is arranged in the inner cavity of the interlayer.

[0009] Preferably, connecting flanges are provided on the outer sides of the left connecting pipe and the right connecting pipe, mounting holes are provided in the inner cavities of the connecting flanges, and four groups of mounting holes are provided.

[0010] Preferably, a water outlet is provided on the left side of the plastic hose, and a water inlet is provided on the right side of the plastic hose, and sealing rings are installed on the inner surfaces of the water outlet and the water inlet.

[0011] Preferably, a thread groove is provided on the inner wall of the chip groove, and a threaded connection is formed between the thread groove and the bolt, wherein the inner surface of one group of the connecting flanges abuts against the outer surface of the water outlet, and the inner surface of the other group of the connecting flanges abuts against the outer surface of the water inlet.

[0012] Preferably, the inner surface of the plastic hose is provided with an epoxy resin coating, and the material of the plastic hose is polytetrafluoroethylene.

[0013] Preferably, the carbonized filler is made of aluminum hydroxide, and the outer surface of the corrugated universal structure is corrugated.

[0014] The technical effects and advantages of this utility model are:

[0015] 1. Compared with the existing technology, this multi-directional flame-retardant plastic pipe can be flexibly transferred in different directions through the corrugated universal structure and the flexible characteristics of the plastic hose. It can be easily bent and adjusted in direction, adapting to complex installation environments. It can effectively disperse the stress in the pipeline and avoid stress concentration at the transfer point, thereby reducing the risk of pipeline rupture or damage.

[0016] 2. Compared with the existing technology, the multi-directional flame-retardant plastic pipe is designed with an interlayer and a carbonized filler. In the event of a fire, the carbonized filler made of polyimide material can form a protective carbonized layer on the outer surface of the pipe under high-temperature combustion, preventing the spread of flames. It can effectively delay the spread of flames and provide a certain thermal isolation effect to prevent the external high temperature from affecting the fluid inside the hose, ensuring that the fluid operates within a safe temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front cross-section structure of the utility model.

[0018] Figure 2 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point A in the figure.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the corrugated universal structure of the utility model.

[0020] Figure 4 It is a side view structural diagram of the utility model.

[0021] The figures are marked as follows: 1. corrugated universal structure; 2. left connecting pipe; 3. right connecting pipe; 4. first connecting flange; 5. mounting hole; 6. plastic hose; 61. water outlet; 62. water inlet; 7. interlayer; 8. carbonized filler; 9. epoxy resin coating; 10. sealing ring. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1

[0024] As attached Figures 1 to 4 The multi-directional flame-retardant plastic tube shown includes a corrugated universal structure 1, a plastic hose 6, an interlayer 7, and a carbonized filler 8. A left connecting tube 2 is provided on the left side of the corrugated universal structure 1, and a right connecting tube 3 is provided on the right side of the corrugated universal structure 1.

[0025] The plastic hose 6 is arranged in the inner cavity of the corrugated universal structure 1 , the interlayer 7 is arranged between the corrugated universal structure 1 and the plastic hose 6 , and the carbonized filler 8 is arranged in the inner cavity of the interlayer 7 .

[0026] Among them: when the pipeline needs to be multi-directionally switched, the direction of the connecting pipeline can be easily changed by adjusting the bending corrugated universal structure 1 and the plastic hose 6. According to the required flow path, the length and bending angle of the corrugated universal structure 1 and the plastic hose 6 are adjusted to make it smoothly connected to other equipment or pipelines, ensuring stable transmission of the fluid and adapting it to different installation requirements. The left connecting pipe 2 and the right connecting pipe 3 are respectively fixed on the left and right sides of the corrugated universal structure 1. The two can maintain a firm connection at a variety of angles through the flexibility of the corrugated universal structure 1, thereby simplifying the installation and maintenance process. When the pipe body is subjected to high-temperature combustion, the carbonized filler 8 made of polyimide in the interlayer 7 will undergo a carbonization reaction. As the temperature rises, the carbonized layer will continue to form, protecting the inner layer of the plastic hose 6 from damage by direct flames and high temperatures, reducing the heat conduction speed to the inner 6 parts of the plastic hose, and preventing it from melting or deforming in a high-temperature environment.

[0027] Example 2

[0028] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working methods. Figures 1 to 4 As shown, see the following description for details:

[0029] As a preferred embodiment, a connecting flange 4 is provided on the outer side of the left connecting pipe 2 and the right connecting pipe 3, and the inner cavity of the connecting flange 4 is provided with mounting holes 5, and four groups of mounting holes 5 are provided; further, the connecting flange 4 is connected by bolts through the four mounting holes 5, ensuring the tightness and stability of the connection and being able to evenly disperse the stress during the connection process.

[0030] As a preferred embodiment, a water outlet 61 is provided on the left side of the plastic hose 6, and a water inlet 62 is provided on the right side of the plastic hose 6, and a sealing ring 10 is installed on the inner surface of the water outlet 61 and the water inlet 62; further, when the fluid enters the water inlet 62, the sealing ring 10 ensures no leakage, and the fluid flows through the inner cavity of the plastic hose 6 and then flows out from the water outlet 61. The sealing ring 10 effectively prevents liquid leakage, thereby ensuring the airtightness and safety of the system.

[0031] As a preferred embodiment, the inner surface of one group of connecting flanges 4 abuts against the outer surface of the water outlet 61, and the inner surface of the other group of connecting flanges 4 abuts against the outer surface of the water inlet 62; further, the two groups of connecting flanges 4 can respectively drive the water outlet 61 and the water inlet 62 to be installed and fixed.

[0032] As a preferred embodiment, the inner surface of the plastic hose 6 is provided with an epoxy resin coating 9, and the material of the plastic hose 6 is polytetrafluoroethylene; furthermore, polytetrafluoroethylene has excellent heat resistance, which can facilitate the plastic hose 6 to transport high-temperature fluids. The epoxy resin coating 9 is combined with polytetrafluoroethylene to increase the resistance and reduce the risk of degradation and corrosion due to high temperature.

[0033] As a preferred embodiment, the carbonized filler 8 is made of polyimide, and the outer surface of the corrugated universal structure 1 is corrugated; further, the carbonized filler 8 made of polyimide will undergo a carbonization reaction to protect the safety of the pipeline, and the corrugated universal structure 1 can achieve rotation in different directions through the corrugations on the surface.

[0034] The working process of the present invention is as follows: first, when the pipeline needs to be switched in multiple directions, the outer surface of the corrugated universal structure 1 is corrugated, and the plastic hose 6 is soft, thereby allowing the pipeline to be flexibly deformed in multiple directions. The direction of the connected pipeline can be conveniently changed by adjusting and bending the corrugated universal structure 1 and the plastic hose 6. According to the required flow path, the length and bending angle of the corrugated universal structure 1 and the plastic hose 6 are adjusted. Then, the left connecting pipe 2 and the right connecting pipe 3 are respectively fixed to the left and right sides of the corrugated universal structure 1. Two sets of connecting flanges 4 are used and connected by bolts through four mounting holes 5 to smoothly connect them to other equipment or pipelines. Since the water outlet 61 and the water inlet 62 are respectively in contact with the left connecting pipe 2 and the right connecting pipe 3, other equipment or pipelines can be fixed at the same time as the connecting flanges 4.

[0035] And when the fluid enters the water inlet 62, the sealing ring 10 ensures that there is no leakage at the connection. The fluid flows through the inner cavity of the plastic hose 6 and is provided with an additional protective layer by the epoxy resin coating 9, thereby improving the wear resistance and corrosion resistance of the plastic hose 6, and then flows out from the water outlet 61. When the equipment is subjected to high-temperature combustion, the carbonized filler 8 made of polyimide in the interlayer 7 will undergo a carbonization reaction. As the temperature rises, a thick carbonized layer is formed, thereby protecting the inner layer of the plastic hose 6 from damage by direct flames and high temperatures, reducing the heat conduction speed to the inner 6 of the plastic hose, and preventing it from melting or deforming in a high-temperature environment. The above is the working principle of this multi-directionally connected flame-retardant plastic pipe.

Claims

1. A flame-retardant plastic tube with multi-directional connection, comprising a corrugated universal structure (1), a plastic hose (6), an interlayer (7) and a carbonized filler (8), characterized in that: A left connecting pipe (2) is provided on the left side of the corrugated universal structure (1), and a right connecting pipe (3) is provided on the right side of the corrugated universal structure (1); The plastic hose (6) is arranged in the inner cavity of the corrugated universal structure (1), the interlayer (7) is arranged between the corrugated universal structure (1) and the plastic hose (6), and the carbonized filler (8) is arranged in the inner cavity of the interlayer (7).

2. The multi-directional flame-retardant plastic tube according to claim 1, characterized in that: The outer sides of the left connecting pipe (2) and the right connecting pipe (3) are both provided with connecting flanges (4), the inner cavities of the connecting flanges (4) are provided with mounting holes (5), and the mounting holes (5) are provided in four groups.

3. The multi-directional flame-retardant plastic tube according to claim 2, characterized in that: A water outlet (61) is provided on the left side of the plastic hose (6), and a water inlet (62) is provided on the right side of the plastic hose (6). Sealing rings (10) are installed on the inner surfaces of the water outlet (61) and the water inlet (62).

4. The multi-directional flame-retardant plastic tube according to claim 3, characterized in that: The inner surface of one group of the connecting flanges (4) abuts against the outer surface of the water outlet (61), and the inner surface of the other group of the connecting flanges (4) abuts against the outer surface of the water inlet (62).

5. The multi-directional flame-retardant plastic tube according to claim 3, characterized in that: The inner surface of the plastic hose (6) is provided with an epoxy resin coating (9), and the material of the plastic hose (6) is polytetrafluoroethylene.

6. The multi-directional flame-retardant plastic tube according to claim 1, characterized in that: The carbonized filler (8) is made of polyimide, and the outer surface of the corrugated universal structure (1) is corrugated.

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