Corrosion resistant teflon tube

Abstract

The utility model relates to a kind of corrosion-resistant iron fluorine long tube, including base pipe, pressure-bearing layer, anchoring layer and protective layer, guiding groove is equipped on base pipe, guiding groove and pressure-bearing layer are matched, pressure-bearing layer is connected by guiding groove and base pipe, anchoring layer is set on pressure-bearing layer, protective layer and anchoring layer are connected.The design of the utility model, each layer structure forms a compact whole, so that stress can be more evenly distributed on the pipe, substantially improve the structural stability and fatigue resistance of pipe body.

Description

Technical Field

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

[0002] Teflon tubing, also known as polytetrafluoroethylene (PTFE) tubing, is widely used in fluid transport systems in industries such as chemical, pharmaceutical, electronics, and food due to its excellent corrosion resistance, high temperature resistance, and low coefficient of friction. PTFE material possesses extremely strong chemical inertness, resisting the erosion of most strong acids, strong alkalis, and organic solvents. It also exhibits good electrical insulation properties and a wide operating temperature range, maintaining stable physicochemical properties even under harsh operating conditions.

[0003] In practical applications, to enhance the mechanical strength and compressive strength of PTFE pipes, metal wire reinforcement structures are often employed. For example, a stainless steel wire winding layer is incorporated into the exterior or interior of the pipe body to improve its tensile, compressive, and creep resistance, meeting the requirements for use under high pressure or high mechanical stress environments. Furthermore, some composite structures also incorporate an aramid fiber braided layer as an intermediate reinforcement layer, leveraging the high strength and lightweight characteristics of aramid to further optimize the overall mechanical performance of the pipe body.

[0004] However, most existing PTFE reinforced pipes employ a combination of a unidirectional stainless steel wire winding structure and an outer aramid or stainless steel wire braid. Under repeated bending or dynamic loads, this type of structure tends to slip relative to each reinforcing layer, affecting the overall load-bearing capacity of the pipe structure. Furthermore, localized stress concentration may occur during long-term use, leading to insufficient bonding stability between the reinforcing layers and the PTFE matrix. Therefore, it is necessary to develop a newer, simpler design that enhances the bonding stability between the reinforcing layers to address these issues. Utility Model Content

[0005] The purpose of this invention is to provide a corrosion-resistant Teflon tube to solve the technical problems of existing reinforced tubes, such as the relative slippage between the reinforcing layers when subjected to repeated bending or dynamic loads, which affects the structural collaborative load-bearing effect, and the local stress concentration that reduces the bonding stability between the reinforcing layer and the matrix during long-term use.

[0006] This utility model provides the following technical solution: a corrosion-resistant Teflon tube, comprising a base tube, a reinforcing layer, an anchoring layer and a protective layer, wherein a guide groove is provided on the base tube, the guide groove and the reinforcing layer are matched, the reinforcing layer is connected to the base tube through the guide groove, the anchoring layer is disposed on the reinforcing layer, and the protective layer is connected to the anchoring layer.

[0007] Preferably, the guide groove includes a spiral groove one and a spiral groove two, which are arranged intersectingly on the base tube.

[0008] Preferably, the reinforcing layer includes a first wound metal wire and a second wound metal wire, the first wound metal wire being matched with either the first or the second spiral groove, the second spiral groove being matched with either the first or the second spiral groove, the first wound metal wire being connected to the base tube through either the first or the second spiral groove, and the second wound metal wire being connected to the base tube through either the second or the first spiral groove.

[0009] Preferably, both the first winding wire and the second winding wire are stainless steel wires.

[0010] Preferably, the substrate tube is made of polytetrafluoroethylene.

[0011] Preferably, the anchoring layer is provided with a protruding structure to enhance the connection, and the protective layer is fixedly connected to the anchoring layer through the protruding structure.

[0012] Preferably, the anchoring layer is a thermoplastic polyurethane elastomer material.

[0013] Preferably, the protective layer is made of cross-woven aramid fiber bundles.

[0014] Preferably, an outer sheath is provided on the protective layer, and the outer sheath is provided with anti-slip texture.

[0015] Preferably, the outer sheath is made of polyurethane or nylon.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model discloses a corrosion-resistant Teflon pipe, comprising a base pipe, a reinforcing layer, an anchoring layer, and a protective layer. A guide groove is provided on the base pipe, matching the reinforcing layer. The reinforcing layer is connected to the base pipe via the guide groove. The anchoring layer is disposed on the reinforcing layer, and the protective layer is connected to the anchoring layer. The reinforcing layer, connected to the base pipe via the guide groove, forms a macroscopically integrated structure with the base pipe. The reinforcing layer effectively improves the pressure resistance of the base pipe. Furthermore, the formation of a tight, integrated structure allows for a more uniform distribution of stress throughout the pipe, significantly improving the structural stability and fatigue resistance of the pipe.

[0017] 2. The corrosion-resistant Teflon tube of this utility model has guide grooves including a spiral groove one and a spiral groove two, which are intersectingly arranged on the base tube. The reinforcing layer includes a wound metal wire one and a wound metal wire two. The wound metal wire one matches the spiral groove one or the spiral groove two, and the spiral groove two matches the spiral groove two or the spiral groove one. The wound metal wire one is connected to the base tube through the spiral groove one or the spiral groove two, and the wound metal wire two is connected to the base tube through the spiral groove two or the spiral groove one. The wound metal wire one is wound on the base tube through the spiral groove one, and the wound metal wire two is wound on the base tube through the spiral groove two, which fundamentally locks the relative position of the inner reinforcing layer and the base tube, effectively resisting slippage under torsional loads.

[0018] 3. In this utility model, the corrosion-resistant Teflon tube uses stainless steel wires for both the first and second windings. Stainless steel wires possess excellent heat resistance and rust prevention properties, ensuring that the reinforcing layer will not rust or corrode and fail under high temperature and high humidity conditions.

[0019] 4. The corrosion-resistant Teflon tube of this utility model has a base tube made of polytetrafluoroethylene (PTFE). PTFE has excellent corrosion resistance, ensuring that the tube can transport various extremely corrosive chemicals.

[0020] 5. The corrosion-resistant Teflon pipe of this utility model has a raised structure on the anchoring layer to enhance the connection. The protective layer is fixedly connected to the anchoring layer through the raised structure. The protective layer and the anchoring layer form a mechanical interlock through the raised structure, changing the interface between the two from simple frictional contact to structural embedding, which significantly improves the cooperative load-bearing capacity between the layers of the pipe under dynamic bending conditions.

[0021] 6. The corrosion-resistant Teflon pipe of this utility model has an anchoring layer made of thermoplastic polyurethane elastomer material. The thermoplastic polyurethane elastomer material has high adhesion to both the reinforcing layer and the protective layer, effectively improving the pipe's synergistic load-bearing capacity.

[0022] 7. The corrosion-resistant Teflon pipe of this utility model has a protective layer made of cross-woven aramid fiber bundles. Through cross-weaving, the aramid fiber bundles are tightly pressed onto the surface of the anchoring layer under tension, thereby forming a mechanical interlock with the anchoring layer, improving the load-bearing capacity. In addition, aramid fibers have excellent toughness, which allows the pipe to maintain a certain bending ability while also having a certain tensile strength.

[0023] 8. The corrosion-resistant Teflon tube of this utility model is further provided with an outer sheath on the protective layer, and the outer sheath is provided with anti-slip texture. The anti-slip texture can increase the roughness of the outer sheath, thereby generating greater friction between the outer sheath and the clamp or the operator's hand during installation and use.

[0024] 9. The corrosion-resistant Teflon tube of this utility model has an outer sheath made of polyurethane or nylon. The polyurethane or nylon can be tightly bonded to the protective layer through a hot-melt process. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional schematic diagram of the corrosion-resistant Teflon tube of this utility model; Figure 2 This is a partial enlargement of the corrosion-resistant Teflon tube of this utility model. Figure 1 ; Figure 3 This is a cross-sectional view of the corrosion-resistant Teflon tube of this utility model; Figure 4 This is a partial enlargement of the corrosion-resistant Teflon tube of this utility model. Figure 2 ; Figure 5 This is a partial enlargement of the corrosion-resistant Teflon tube of this utility model. Figure 3 ; Figure 6 This is a partial enlargement of the corrosion-resistant Teflon tube of this utility model. Figure 4 .

[0027] In each of the attached drawings, 1 is the base tube, 11 is the guide groove, 111 is the spiral groove one, and 112 is the spiral groove two; 2 is the reinforcing layer, 21 is the winding metal wire one, and 22 is the winding metal wire two; 3 is the anchoring layer, 31 is the raised structure; 4 is the protective layer; 5 is the outer sheath, and 51 is the anti-slip texture. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0029] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In the description of this application, it should be understood that the terms "upper", "lower", "side", "front", "rear", etc., indicate the orientation or positional relationship based on the installation orientation or positional relationship, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] In the description of this application, it should be noted that the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0033] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0034] Furthermore, in this application, the technical features described in an open-ended manner include both closed technical solutions composed of the listed features and open technical solutions that include the listed features.

[0035] To further understand the utility model content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings: like Figure 1-6As shown, the corrosion-resistant Teflon pipe includes a base pipe 1, a reinforcing layer 2, an anchoring layer 3, and a protective layer 4. A guide groove 11 is provided on the base pipe 1, matching the reinforcing layer 2. The reinforcing layer 2 is connected to the base pipe 1 through the guide groove 11. The anchoring layer 3 is disposed on the reinforcing layer 2, and the protective layer 4 is connected to the anchoring layer 3. In this embodiment, the reinforcing layer is connected to the base pipe through the guide groove, forming a macroscopically integrated structure. The reinforcing layer effectively improves the pressure resistance of the base pipe. The protective layer is tightly bonded to the reinforcing layer through the anchoring layer, working together to bear the load. The protective layer ensures the pipe has a certain bending capacity while also possessing a certain tensile strength. The various layers form a tight whole, allowing stress to be distributed more evenly across the pipe, significantly improving the structural stability and fatigue resistance of the pipe. Of course, this is not limited to this; any other structure that can significantly improve the structural stability and fatigue resistance of the pipe can be used.

[0036] Specifically, such as Figure 1 , 6 As shown, the guide groove 11 includes a spiral groove 111 and a spiral groove 112, which are intersectingly arranged on the base tube 1. The reinforcing layer 2 includes a wound metal wire 21 and a wound metal wire 22. The wound metal wire 21 matches either the spiral groove 111 or the spiral groove 112, and the spiral groove 112 matches either the spiral groove 112 or the spiral groove 111. The wound metal wire 21 is connected to the base tube 1 through the spiral groove 111 or the spiral groove 112, and the wound metal wire 22 is connected to the base tube 1 through the spiral groove 112 or the spiral groove 111. In this embodiment, the wound metal wire 1 is wound around the base tube through the spiral groove 1, and the wound metal wire 2 is wound around the base tube through the spiral groove 2, fundamentally locking the relative position of the inner reinforcing layer and the base tube, effectively resisting slippage under torsional load. Of course, it is not limited to this; other materials that can effectively resist slippage under torsional load can also be used.

[0037] Specifically, such as Figure 1 , 5 As shown, both the first wound metal wire 21 and the second wound metal wire 22 are stainless steel wires. In this embodiment, the stainless steel wire has excellent heat resistance and rust prevention properties, ensuring that the reinforcing layer will not rust or corrode and fail under high temperature and high humidity environments. Of course, it is not limited to this; other materials with excellent heat resistance and rust prevention properties can be used.

[0038] Specifically, the base tube 1 is made of polytetrafluoroethylene (PTFE). In this embodiment, PTFE has excellent corrosion resistance, ensuring that the tube can transport various extremely corrosive chemicals. However, it is not limited to this; other materials with excellent corrosion resistance can be used.

[0039] Specifically, such as Figure 1 , 4 As shown, the anchoring layer 3 is provided with a protruding structure 31 for enhancing the connection, and the protective layer 4 is fixedly connected to the anchoring layer 3 through the protruding structure 31. In this embodiment, a metal coupling agent coating is applied to the reinforcing layer, allowing the reinforcing layer and the anchoring layer to bond tightly; the protective layer forms a mechanical interlock with the anchoring layer through the protruding structure, transforming the contact surface between the protective layer and the anchoring layer from simple frictional contact to structural interlocking, significantly improving the synergistic load-bearing capacity between the reinforcing layers under dynamic bending conditions. Of course, it is not limited to this; any other structure that can significantly improve the synergistic load-bearing capacity between the reinforcing layers under dynamic bending conditions can be used.

[0040] Specifically, anchoring layer 3 is made of thermoplastic polyurethane elastomer material. In this embodiment, the thermoplastic polyurethane elastomer material has high adhesion to both the reinforcing layer and the protective layer, effectively improving the synergistic load-bearing capacity of the pipe. Of course, it is not limited to this; other materials with high adhesion can be used.

[0041] Specifically, the protective layer 4 is made of cross-woven aramid fiber bundles. In this embodiment, through cross-weaving, the aramid fiber bundles are tightly pressed onto the surface of the anchoring layer under tension, thereby forming a mechanical interlock with the anchoring layer, improving the load-bearing capacity. Furthermore, aramid fibers have excellent toughness, allowing the tube to maintain a certain degree of bending ability while also possessing a certain tensile strength. Of course, this is not a limitation; other materials can be used that allow the protective layer to be tightly pressed onto the surface of the anchoring layer and possess both bending ability and tensile strength.

[0042] Specifically, such as Figure 2 As shown, an outer sheath 5 is also provided on the protective layer 4, and anti-slip texture 51 is provided on the outer sheath 5. In this embodiment, the anti-slip texture can increase the roughness of the outer sheath, thereby generating greater friction between the outer sheath and the clamp or the operator's hand during installation and use, making the operation more convenient during installation and use. Of course, it is not limited to this, and other materials that can increase the roughness of the outer sheath are acceptable.

[0043] Specifically, the outer sheath 5 is made of polyurethane or nylon. In this embodiment, the outer sheath is made of polyurethane, which can be tightly bonded to the protective layer through hot-melt bonding and other processes. Of course, it is not limited to this; any other material capable of achieving a tight bond with the protective layer can be used.

[0044] The manufacturing and structural assembly process is as follows: A base tube with cross-arranged spiral grooves I and II on its surface is prepared using polytetrafluoroethylene (PTFE). A wound metal wire I coated with a metal coupling agent is wound onto the base tube through spiral groove I. A wound metal wire II coated with a metal coupling agent is wound onto the base tube through spiral groove II. Molten modified thermoplastic polyurethane elastomer material is extruded onto the base tube, wound metal wire I, and wound metal wire II through an extruder to form an anchoring layer. A raised structure is then set outside the anchoring layer. Aramid fiber bundles are cross-woven into a protective layer on the raised structure. Finally, an outer sheath is covered on the outermost layer, and anti-slip textures are set on the outer sheath to obtain the final product.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A corrosion-resistant Teflon pipe, characterized in that: It includes a base tube (1), a reinforcing layer (2), an anchoring layer (3) and a protective layer (4). A guide groove (11) is provided on the base tube (1). The guide groove (11) matches the reinforcing layer (2). The reinforcing layer (2) is connected to the base tube (1) through the guide groove (11). The anchoring layer (3) is disposed on the reinforcing layer (2). The protective layer (4) is connected to the anchoring layer (3).

2. The corrosion-resistant Teflon pipe according to claim 1, characterized in that: The guide groove (11) includes a spiral groove one (111) and a spiral groove two (112), which are arranged intersectingly on the base tube (1).

3. The corrosion-resistant Teflon tube according to claim 2, characterized in that: The reinforcing layer (2) includes a first wound metal wire (21) and a second wound metal wire (22). The first wound metal wire (21) is matched with the first spiral groove (111) or the second spiral groove (112). The second spiral groove (112) is matched with the second spiral groove (112) or the first spiral groove (111). The first wound metal wire (21) is connected to the base tube (1) through the first spiral groove (111) or the second spiral groove (112). The second wound metal wire (22) is connected to the base tube (1) through the second spiral groove (112) or the first spiral groove (111).

4. The corrosion-resistant Teflon tube according to claim 3, characterized in that: Both the first winding wire (21) and the second winding wire (22) are stainless steel wires.

5. The corrosion-resistant Teflon pipe according to any one of claims 2-4, characterized in that: The substrate tube (1) is made of polytetrafluoroethylene.

6. The corrosion-resistant Teflon tube according to claim 5, characterized in that: The anchoring layer (3) is provided with a protruding structure (31) for enhancing the connection, and the protective layer (4) is fixedly connected to the anchoring layer (3) through the protruding structure (31).

7. The corrosion-resistant Teflon tube according to claim 6, characterized in that: The anchoring layer (3) is a thermoplastic polyurethane elastomer material.

8. The corrosion-resistant Teflon tube according to claim 6 or 7, characterized in that: The protective layer (4) is made of aramid fiber bundles woven together.

9. The corrosion-resistant Teflon tube according to claim 8, characterized in that: An outer sheath (5) is also provided on the protective layer (4), and anti-slip texture (51) is provided on the outer sheath (5).

10. The corrosion-resistant Teflon pipe according to claim 9, characterized in that: The outer sheath (5) is made of polyurethane or nylon.

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