A pressure-resistant and flame-retardant PE hollow wall spiral pipe

Abstract

This utility model provides a pressure-resistant and flame-retardant PE hollow-wall spiral wound pipe, belonging to the technical field of hollow-wall spiral wound pipes. The pressure-resistant and flame-retardant PE hollow-wall spiral wound pipe provided by this utility model features a reinforcing tube with reinforcing ribs spirally wound on its outer circumference. Pressure-resistant filler is filled into the reinforcing ribs, improving the overall rigidity and pressure resistance of the spiral wound pipe, making it less prone to deformation and damage under external pressure. Simultaneously, a plastic spring is provided between the reinforcing tube and the spiral wound pipe body, providing internal support to the reinforcing tube and enhancing its ring stiffness and axial stiffness. Due to the plastic spring and the spirally wound reinforcing ribs on the outer circumference of the reinforcing tube, stress concentration is reduced, resulting in excellent bending resistance and preventing breakage of the spiral wound pipe. Furthermore, a flame-retardant and heat-insulating layer and a corrosion-resistant layer are provided on the outer circumference of the reinforcing tube, improving the flame retardancy and corrosion resistance of the spiral wound pipe.

Description

Technical Field

[0001] This utility model belongs to the technical field of hollow wall spiral pipe, and in particular, it relates to a pressure-resistant and flame-retardant PE hollow wall spiral pipe. Background Technology

[0002] Hollow-wall spiral wound pipes are made of high-density polyethylene (PE) and wound into shape in a hot-melt state using a special extrusion process. Currently, hollow-wall spiral wound pipes not only have poor fire resistance and corrosion resistance, but also low structural strength and insufficient compressive strength, making them prone to deformation and damage under external pressure. This makes them unsuitable for high-intensity working environments. Furthermore, hollow-wall spiral wound pipes have poor bending resistance; when subjected to bending stress, they are prone to bending deformation or even breakage, affecting their service life. Utility Model Content

[0003] Based on the above-mentioned problems in the existing technology, the purpose of this utility model embodiment is to provide a pressure-resistant and flame-retardant PE hollow wall spiral pipe to solve the technical problems of poor flame retardancy, insufficient pressure resistance, and poor bending performance of the existing hollow wall spiral pipe.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a pressure-resistant and flame-retardant PE hollow wall spiral pipe, comprising:

[0005] The body of the spiral wound tube;

[0006] A plastic spring is sleeved on the outside of the wound tube body;

[0007] A tightening hose is fitted over the outside of the plastic spring to tighten the plastic spring onto the spiral tube body;

[0008] A reinforcing tube is sleeved on the outside of the tightening hose. Reinforcing ribs are protruding on the outer circumferential surface of the reinforcing tube. The reinforcing ribs are spirally wound around the outside of the reinforcing tube, and a tubular inner cavity is provided through the reinforcing ribs along the axial direction.

[0009] Compression-resistant filler, filling the tubular inner cavity; and

[0010] A protective sleeve is fitted over the outside of the reinforcing tube, and the protective sleeve is provided with a flame-retardant and heat-insulating layer.

[0011] The corrosion-resistant layer is provided on the outer circumferential surface of the protected sleeve, and the flame-retardant and heat-insulating layer is provided on the outer surface of the flame-retardant and heat-insulating layer.

[0012] Furthermore, the plastic spring is made of polypropylene, and the tightening hose is made of elastic rubber or silicone.

[0013] Furthermore, the wire diameter of the plastic spring is greater than or equal to the thickness of the winding tube body.

[0014] Furthermore, the compression-resistant filler includes polyethylene filler, polypropylene filler, ABS filler, and nylon filler.

[0015] Furthermore, the gap between the tightening hose and / or the spiral tube body and the plastic spring is filled with rubber.

[0016] Furthermore, the cross-section of the reinforcing rib is trapezoidal.

[0017] Furthermore, the pitch of the plastic spring is less than or equal to the wire diameter of the plastic spring.

[0018] Furthermore, a wear-resistant outer layer is also provided on the outer peripheral surface of the corrosion-resistant layer.

[0019] Furthermore, the length of the plastic spring is less than or equal to the length of the winding tube body.

[0020] Furthermore, the inner diameter of the plastic spring is equal to the outer diameter of the winding tube body, and the outer diameter of the plastic spring is equal to the inner diameter of the tightening hose.

[0021] Compared with the prior art, one or more technical solutions in the embodiments of this utility model have at least one of the following beneficial effects:

[0022] The pressure-resistant and flame-retardant PE hollow-wall spiral wound pipe in this embodiment of the invention features a reinforcing tube with spirally wound reinforcing ribs on its outer circumference. These ribs are filled with pressure-resistant filler. When external force compresses the entire spiral wound pipe, the reinforcing tube and ribs provide resistance, improving the overall rigidity and pressure resistance, making it less prone to deformation and damage under external pressure. Simultaneously, a plastic spring is installed between the reinforcing tube and the spiral wound pipe body. This spring provides internal support to the reinforcing tube, enhancing its ring stiffness and axial stiffness, further preventing deformation and damage. The combination of the plastic spring, the spirally wound reinforcing ribs on the outer circumference of the reinforcing tube, and the elastic pressure-resistant filler inside the ribs enhances the overall bendability of the spiral wound pipe, significantly reducing stress concentration at bends and resulting in excellent bending resistance without breakage. Furthermore, a flame-retardant and heat-insulating layer and a corrosion-resistant layer are provided on the outer circumference of the reinforcing tube, improving its flame retardancy and corrosion resistance. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A three-dimensional structural diagram of the pressure-resistant and flame-retardant PE hollow wall spiral pipe provided by this utility model;

[0025] Figure 2 A cross-sectional view of the pressure-resistant and flame-retardant PE hollow wall spiral pipe provided by this utility model;

[0026] Figure 3 A three-dimensional structural diagram of the spiral wound tube body provided by this utility model;

[0027] Figure 4 A three-dimensional structural diagram of the plastic spring provided by this utility model;

[0028] Figure 5 A three-dimensional structural diagram of the reinforcing tube provided by this utility model;

[0029] Figure 6 An exploded view of the pressure-resistant and flame-retardant PE hollow wall spiral pipe provided by this utility model.

[0030] The following are the labeling elements in the figure:

[0031] 1-The spiral wound tube body; 2-Plastic spring; 3-The tightening hose;

[0032] 4-Reinforcing tube; 5-Compression filler; 6-Reinforcing rib;

[0033] 7-Helical groove; 8-Protective sleeve. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0035] It should be noted that when an element is referred to as "connected to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to or indirectly connected to the other element. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "attached" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0037] Please refer to the following: Figures 1 to 6 The pressure-resistant and flame-retardant PE hollow-wall spiral wound pipe provided in this embodiment of the present invention will now be described. Please refer to the following for further details. Figure 1 , Figure 2 and Figure 3The pressure-resistant and flame-retardant PE hollow-wall spiral wound pipe provided in this embodiment includes a spiral wound pipe body 1, a plastic spring 2, a tightening hose 3, a reinforcing pipe 4, a pressure-resistant filler 5, and a protective sleeve 8. The plastic spring 2 is sleeved on the outside of the spiral wound pipe body 1, and the tightening hose 3 is sleeved on the outside of the plastic spring 2. The tightening hose 3 can tighten the plastic spring 2 onto the spiral wound pipe body 1, ensuring close contact between the plastic spring 2 and the outer circumferential surface of the spiral wound pipe body 1. The reinforcing pipe 4 is sleeved on the outside of the tightening hose 3. The reinforcing pipe 4 can be, but is not limited to, a pipe made of polyethylene material. Reinforcing ribs 6 are protruding from the outer circumferential surface of the reinforcing pipe 4. The reinforcing ribs 6 are spirally wound on the outside of the reinforcing pipe 4, and a tubular inner cavity is axially penetrating the reinforcing ribs 6. The pressure-resistant filler 5 fills the tubular inner cavity to enhance the pressure resistance of the reinforcing ribs 6. The protective sleeve 8 is sleeved on the outside of the reinforcing pipe 4, and a flame-retardant and heat-insulating layer is provided on the outer circumferential surface of the protective sleeve 8. The flame-retardant and heat-insulating properties of the flame-retardant and heat-insulating layer provide a flame-retardant function. Meanwhile, a corrosion-resistant layer is placed on the outer surface of the flame-retardant and heat-insulating layer to enhance its corrosion resistance.

[0038] The pressure-resistant and flame-retardant PE hollow-wall spiral wound pipe provided in this embodiment of the invention provides resistance to external pressure when the entire spiral wound pipe is compressed. The reinforcing tube 4 acts as a counterweight, improving the overall rigidity and pressure resistance of the spiral wound pipe, making it less prone to deformation and damage under external pressure. When the external force is large, the external force compresses the reinforcing ribs 6, which are spirally wound around the outside of the reinforcing tube 4. These reinforcing ribs 6 then compress the pressure-resistant filler 5 inside, causing the filler 5 to deform and thus partially offset the external force, further improving the overall rigidity and pressure resistance of the spiral wound pipe. Simultaneously, a plastic spring 2 is provided between the reinforcing tube 4 and the spiral wound pipe body 1, providing internal support to the reinforcing tube 4 and preventing deformation and damage to the spiral wound pipe body 1. Furthermore, due to the setting of the plastic spring 2, and the spiral arrangement of the reinforcing ribs 6 on the outer circumference of the reinforcing tube 4, and the presence of elastic anti-compression filler 5 inside the reinforcing ribs 6, the overall bendability of the winding tube can be enhanced. When the winding tube is slightly bent, the plastic spring 2 can reduce stress concentration and quickly restore the bent winding tube to its initial state when the external force disappears, so that the winding tube as a whole has good bending resistance and will not break.

[0039] The pressure-resistant and flame-retardant PE hollow-wall spiral wound pipe provided in this embodiment of the invention, compared with the prior art, features a reinforcing pipe 4 with reinforcing ribs 6 spirally wound on its outer circumference. The reinforcing ribs 6 are filled with pressure-resistant filler 5. When external force compresses the entire spiral wound pipe, the reinforcing pipe 4 and reinforcing ribs 6 provide resistance, improving the overall rigidity and pressure resistance of the spiral wound pipe, making it less prone to deformation and damage under external pressure. Simultaneously, a plastic spring 2 is provided between the reinforcing pipe 4 and the spiral wound pipe body 1, providing internal support to the reinforcing pipe 4 and enhancing its ring stiffness and axial stiffness, thereby further effectively preventing deformation and damage to the spiral wound pipe body 1. Due to the plastic spring 2 and the spirally wound reinforcing ribs 6 on the outer circumference of the reinforcing pipe 4, with elastic pressure-resistant filler 5 inside the reinforcing ribs 6, the overall bendability of the spiral wound pipe is enhanced, significantly reducing stress concentration at bends, resulting in excellent bending resistance and preventing breakage. In addition, a flame-retardant and heat-insulating layer and a corrosion-resistant layer are provided on the outer circumference of the reinforcing tube 4, which can improve the flame retardancy and corrosion resistance of the wound tube.

[0040] Understandably, in some embodiments, the plastic spring 2 is made of polypropylene, giving it both rigidity and elasticity, and reducing the overall mass of the winding tube. The tightening hose 3 is made of elastic rubber or silicone, allowing it to securely tighten the plastic spring 2 to the outer circumferential surface of the winding tube body 1, preventing axial slippage between the plastic spring 2 and the winding tube body 1. It should be noted that... (The text abruptly ends here, likely due to an incomplete sentence or missing information.) Figure 2 and Figure 3 A spiral groove 7 is formed on the outer circumferential surface of the winding tube body 1. A portion of the plastic spring 2 is housed in the spiral groove 7, which can further prevent axial slippage between the plastic spring 2 and the winding tube body 1.

[0041] Understandably, in some embodiments, the wire diameter of the plastic spring 2 is equal to the thickness of the winding tube body 1, or the wire diameter of the plastic spring 2 is greater than the thickness of the winding tube body 1. This ensures that the plastic spring 2 provides good internal support for the reinforcing tube 4 and also gives the plastic spring 2 good bending resistance, allowing the bent winding tube body 1 to quickly return to a straight state after the external force is removed.

[0042] Understandably, in some embodiments, the compression filler 5 includes polyethylene filler, polypropylene filler, ABS filler, and nylon filler. Of course, the compression filler 5 can be, but is not limited to, the polyethylene filler, polypropylene filler, ABS filler, and nylon filler described above.

[0043] Understandably, in some embodiments, the gap between the tightening hose 3 and / or the spiral tube body 1 and the plastic spring 2 is filled with rubber, that is, the entire plastic spring 2 is embedded in the rubber. On the one hand, this can enhance the tightness of the connection between the tightening hose 3 and / or the spiral tube body 1 and the plastic spring 2, and on the other hand, the elasticity of the rubber can enhance the compressive strength and bending strength.

[0044] Please refer to the following: Figure 2 and Figure 5 In some embodiments, the cross-section of the reinforcing rib 6 is trapezoidal, which is beneficial to increasing the compressive strength of the reinforcing rib 6.

[0045] Please refer to the following: Figure 4 In some embodiments, the pitch of the plastic spring 2 is less than or equal to the wire diameter of the plastic spring 2. This ensures that the plastic spring 2 provides good internal support for the reinforcing tube 4 and also gives the plastic spring 2 good bending resistance, allowing the bent winding tube body 1 to quickly return to a straight state after the external force is removed.

[0046] Understandably, in some embodiments, a wear-resistant outer layer is also provided on the outer peripheral surface of the corrosion-resistant layer, which helps to enhance the overall wear resistance of the spiral wound tube.

[0047] Please refer to the following: Figure 1 , Figure 2 and Figure 6 In some embodiments, the length of the plastic spring 2 is less than or equal to the length of the winding tube body 1. This ensures that the plastic spring 2 provides good internal support for the reinforcing tube 4 and also gives the plastic spring 2 good bending resistance, allowing the bent winding tube body 1 to quickly return to a straight state after the external force is removed.

[0048] Please refer to the following: Figure 1 , Figure 2 and Figure 6 In some embodiments, the inner diameter of the plastic spring 2 is equal to the outer diameter of the spiral tube body 1, and the outer diameter of the plastic spring 2 is equal to the inner diameter of the tightening hose 3. This allows the tightening hose 3, the plastic spring 2, and the spiral tube body 1 to be tightly connected, which is beneficial to improving the compressive strength and bending resistance, and also prevents the plastic spring 2 from being displaced relative to the spiral tube body 1.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure-resistant, fire-retardant PE hollow-wall, wound pipe, characterized in that, include: The body of the spiral wound tube; A plastic spring is sleeved on the outside of the wound tube body; A tightening hose is fitted over the outside of the plastic spring to tighten the plastic spring onto the spiral tube body; A reinforcing tube is sleeved on the outside of the tightening hose. Reinforcing ribs are protruding on the outer circumferential surface of the reinforcing tube. The reinforcing ribs are spirally wound around the outside of the reinforcing tube, and a tubular inner cavity is provided through the reinforcing ribs along the axial direction. Compression-resistant filler is used to fill the tubular inner cavity; as well as A protective sleeve is fitted over the outside of the reinforcing tube, and the protective sleeve is provided with a flame-retardant and heat-insulating layer. The corrosion-resistant layer is provided on the outer circumferential surface of the protected sleeve, and the flame-retardant and heat-insulating layer is provided on the outer surface of the flame-retardant and heat-insulating layer.

2. The pressure-resistant and fire-resistant PE hollow core wall winding pipe according to claim 1, characterized in that, The plastic spring is made of polypropylene, and the tightening hose is made of elastic rubber or silicone.

3. The pressure-resistant and fire-resistant PE hollow core wall winding pipe according to claim 1, characterized in that, The wire diameter of the plastic spring is greater than or equal to the thickness of the wound tube body.

4. The pressure-resistant and fire-resistant PE hollow core wall winding pipe according to claim 1, characterized in that, The compression-resistant fillers include polyethylene fillers, polypropylene fillers, ABS fillers, and nylon fillers.

5. The pressure-resistant and fire-resistant PE hollow core wall winding pipe according to claim 1, wherein, The gap between the tightening hose and / or the spiral tube body and the plastic spring is filled with rubber.

6. The pressure-resistant and fire-resistant PE hollow core wall winding pipe according to claim 1, wherein, The cross-section of the reinforcing rib is trapezoidal.

7. The pressure-resistant and fire-resistant PE hollow core wall winding pipe according to claim 1, wherein, The pitch of the plastic spring is less than or equal to the wire diameter of the plastic spring.

8. The pressure-resistant and fire-resistant PE hollow core wall winding pipe according to claim 1, wherein, The outer peripheral surface of the corrosion-resistant layer is also provided with a wear-resistant outer layer.

9. The pressure-resistant and flame-retardant PE hollow-wall spiral wound pipe as described in claim 1, characterized in that, The length of the plastic spring is less than or equal to the length of the winding tube body.

10. The pressure-resistant and fire-resistant PE hollow core wall winding pipe according to any one of claims 1 to 9, characterized in that, The inner diameter of the plastic spring is equal to the outer diameter of the spiral tube body, and the outer diameter of the plastic spring is equal to the inner diameter of the tightening hose.

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