Wear-resistant pipeline joint with polytetrafluoroethylene lining
By adding a reinforcing ring to the outside of the PTFE-lined pipe and a support structure to the outer wall of the flange joint, the stability problem of the PTFE-lined wear-resistant pipe joint at the flange joint connection is solved, achieving higher pipe connection strength and wear resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HONGFU NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-06-07
- Publication Date
- 2026-04-21
AI Technical Summary
Existing PTFE-lined wear-resistant pipe fittings have poor stability at flange joints, affecting the firmness of pipe connections.
Reinforcing rings A and B are fitted on the outside of the PTFE-lined tube and reinforced by a traction belt and an internally threaded sleeve. An assembly platform and an isolation strip are provided on the outer wall of the flange joint to provide support and wear protection.
It improves the stability and wear resistance of pipe connections and enhances the overall robustness of the pipeline.
Smart Images

Figure CN224150374U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pipe joint technology, specifically relating to a wear-resistant pipe joint lined with PTFE. Background Technology
[0002] Pipe fittings, as key connecting components of piping systems, are widely used in chemical, energy, and municipal industries.
[0003] In the existing technology, the wear-resistant pipe joint with PTFE lining is a joint that is fixedly connected to the pipe flange joints at both ends of the PTFE lining sleeve. However, due to the simple external structure of the PTFE lining sleeve, the stability at the flange joint connection of adjacent positions is not good, which affects the firmness of the pipe connection. Therefore, it is necessary to design a wear-resistant pipe joint with PTFE lining to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a wear-resistant pipe joint lined with PTFE to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant pipe joint with PTFE lining, comprising a PTFE lining tube, flange joints sleeved at both ends of the PTFE lining tube, a PTFE pressure ring bonded to the connection between the PTFE lining tube and the flange joint, a sealing groove formed on the surface of the flange joint, and mounting holes formed circumferentially at equal intervals on the surface of the sealing groove, wherein a reinforcing component is installed on the external position of the PTFE lining tube.
[0006] The reinforcement assembly includes a reinforcement ring A and a reinforcement ring B sleeved on the outside of the PTFE inner liner, a traction belt fixedly connected between the reinforcement ring A and the reinforcement ring B, a groove formed on the surface of the traction belt, and an internally threaded sleeve fixedly connected to the groove position of the traction belt.
[0007] Preferably, a reinforcing strip is fixedly connected to the outer wall of the traction belt, and the reinforcing strip is attached to the outer surface of the PTFE inner liner tube.
[0008] Preferably, the traction belt is attached to the outer surface of the PTFE inner liner tube, and the traction belt is arranged in an arc shape.
[0009] Preferably, the reinforcing ring A is fixedly connected to one of the flange joints, and the reinforcing ring B is fixedly connected to the other flange joint.
[0010] Preferably, the outer wall of the flange joint is provided with an assembly platform, and the surface of the assembly platform is bonded with an isolation strip.
[0011] Preferably, a warning strip is adhered to the surface of the isolation strip, and buffer through holes are formed on the surface of the isolation strip.
[0012] Preferably, the isolation strip is located outside the reinforcement strip, and an isolation gap is provided between the isolation strip and the reinforcement strip.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. Reinforcing rings A and B are fitted around the outside of the PTFE liner tube. Both reinforcing rings A and B are metal rings, fitted around both ends of the PTFE liner tube to provide reinforcement. The traction belt is a rubber component with bending properties. The groove of the traction belt is fixedly connected to an internal threaded sleeve. The internal threaded sleeve is made of metal. According to the support requirements, a support component is screwed into the inside of the internal threaded sleeve to lift the PTFE liner tube.
[0015] 2. An assembly platform is provided on the outer wall of the flange joint. An isolation strip is bonded to the surface of the assembly platform. The isolation strip is made of flexible material and is installed on the outside of the PTFE liner. Without affecting the bending of the PTFE liner, it provides traction support for the flange joint and at the same time protects the inner reinforcement strip from wear, thereby improving the wear resistance of the pipeline. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the reinforcing ring A and reinforcing ring B of this utility model;
[0018] Figure 3 This is a schematic diagram of the PTFE liner and flange joint structure of this utility model.
[0019] Figure 4 This is a schematic diagram of the isolation strip structure of this utility model.
[0020] In the diagram: 1. PTFE liner; 2. PTFE pressure ring; 3. Flange joint; 4. Isolation strip; 5. Traction strip; 6. Reinforcing ring A; 7. Reinforcing strip; 8. Reinforcing ring B; 9. Internal threaded sleeve; 10. Sealing groove; 11. Mounting hole; 12. Assembly table; 13. Warning strip; 14. Buffer through hole. Detailed Implementation
[0021] 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.
[0022] Example 1: Please refer to Figures 1 to 4This utility model provides a technical solution for a wear-resistant pipe joint with PTFE lining: including a PTFE lining tube 1, flange joints 3 sleeved on both ends of the PTFE lining tube 1, and a PTFE pressure ring 2 bonded to the connection between the PTFE lining tube 1 and the flange joint 3. The PTFE lining tube 1 is used for the installation and fixation of the flange joints 3 at both ends. The PTFE pressure ring 2 is bonded to the connection between the PTFE lining tube 1 and the flange joint 3. The external pipe is connected through the flange joint 3. A sealing groove 10 is opened on the surface of the flange joint 3, and mounting holes 11 are opened circumferentially at equal intervals on the surface of the sealing groove 10. The sealing groove 10 is used to improve the sealing performance of the connection. A reinforcing component is installed on the external position of the PTFE lining tube 1. The installation of the reinforcing component provides reinforcement and protection for the PTFE lining tube 1.
[0023] The reinforcement components include a reinforcement ring A6 and a reinforcement ring B8 fitted around the outside of the PTFE inner liner 1. Both reinforcement rings A6 and B8 are metal rings fitted around both ends of the PTFE inner liner 1 to provide reinforcement. A traction belt 5 is fixedly connected between the reinforcement rings A6 and B8. A groove is formed on the surface of the traction belt 5. The traction belt 5 is a rubber component with bending properties. An internally threaded sleeve 9 is fixedly connected to the groove of the traction belt 5. The internally threaded sleeve 9 is made of metal. According to the support requirements, a support component is screwed into the internally threaded sleeve 9 to lift the PTFE inner liner 1.
[0024] A reinforcing band 7 is fixedly connected to the outer wall of the traction band 5. The reinforcing band 7 is attached to the outer surface of the PTFE inner liner tube 1. The reinforcing band 7 and the traction band 5 are made of the same material, rubber. The traction band 5 is attached to the outer surface of the PTFE inner liner tube 1 and is arc-shaped. The traction band 5 serves as an auxiliary traction device. The reinforcing ring A6 is fixedly connected to one of the flange joints 3, and the reinforcing ring B8 is fixedly connected to the other flange joint 3.
[0025] As can be seen from the above description, the present invention has the following beneficial effects: a reinforcing ring A6 and a reinforcing ring B8 are sleeved on the outside of the PTFE inner liner tube 1. Both the reinforcing ring A6 and the reinforcing ring B8 are metal rings, which are sleeved on both ends of the PTFE inner liner tube 1 to play a reinforcing role. The traction belt 5 is a rubber part with bending performance. The groove position of the traction belt 5 is fixedly connected to the internal threaded sleeve 9. The internal threaded sleeve 9 is made of metal. According to the support needs, a support is spirally inserted into the inside of the internal threaded sleeve 9 to lift the PTFE inner liner tube 1.
[0026] Example 2: Please refer to Figures 1 to 4As shown, based on Embodiment 1, this utility model provides a technical solution for a wear-resistant pipe joint with a PTFE liner: An assembly platform 12 is provided on the outer wall of the flange joint 3, and an isolation strip 4 is adhered to the surface of the assembly platform 12. The isolation strip 4 is made of flexible material and is installed on the outside of the PTFE liner 1. Without affecting the bending of the PTFE liner 1, it provides traction support for the flange joint 3 and protects the inner reinforcing strip 7 from wear, thereby improving the wear resistance of the pipe. A warning strip 13 is adhered to the surface of the isolation strip 4, and a buffer through hole 14 is provided on the surface of the isolation strip 4. The isolation strip 4 is located on the outside of the reinforcing strip 7, and an isolation gap is provided between the isolation strip 4 and the reinforcing strip 7.
[0027] Using the above technical solution, an assembly platform 12 is provided on the outer wall of the flange joint 3. An isolation strip 4 is bonded to the surface of the assembly platform 12. The isolation strip 4 is made of flexible material and is installed on the outside of the PTFE inner liner 1. Without affecting the bending of the PTFE inner liner 1, it provides traction support for the flange joint 3 and at the same time protects the inner reinforcement strip 7 from wear, thereby improving the wear resistance of the pipeline.
[0028] The working principle and usage process of this utility model are as follows: A reinforcing ring A6 and a reinforcing ring B8 are fitted around the outside of the PTFE liner 1. Both reinforcing rings A6 and B8 are metal rings, fitted around both ends of the PTFE liner 1 to provide reinforcement. The traction belt 5 is a rubber component with bending capabilities. An internally threaded sleeve 9 is fixedly connected to the groove of the traction belt 5. The internally threaded sleeve 9 is made of metal. According to the support requirements, a support component is spirally inserted into the internally threaded sleeve 9 to lift the PTFE liner 1. An assembly platform 12 is provided on the outer wall of the flange joint 3. An isolation strip 4 is adhered to the surface of the assembly platform 12. The isolation strip 4 is made of flexible material and installed on the outside of the PTFE liner 1. Without affecting the bending of the PTFE liner 1, it provides traction support to the flange joint 3 and simultaneously protects the inner reinforcing strip 7 from wear, improving the wear resistance of the pipeline.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0030] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A wear-resistant pipe joint lined with tetrafluoro, comprising a tetrafluoro lining pipe (1), a flange joint (3) sleeved on both ends of the tetrafluoro lining pipe (1), a tetrafluoro compression ring (2) bonded at the joint of the tetrafluoro lining pipe (1) and the flange joint (3), a sealing groove (10) opened on the surface of the flange joint (3), and mounting holes (11) circumferentially and equidistantly opened on the surface of the sealing groove (10), characterized in that: A reinforcing component is installed on the external part of the PTFE liner tube (1); The reinforcement assembly includes a reinforcement ring A (6) and a reinforcement ring B (8) sleeved on the outside of the PTFE inner liner (1), a traction belt (5) fixedly connected between the reinforcement ring A (6) and the reinforcement ring B (8), a groove formed on the surface of the traction belt (5), and an internally threaded sleeve (9) fixedly connected to the groove position of the traction belt (5).
2. A lined, wear-resistant pipe joint according to claim 1, characterized in that: A reinforcing belt (7) is fixedly connected to the outer wall of the traction belt (5), and the reinforcing belt (7) is attached to the outer surface of the PTFE inner liner tube (1).
3. A lined, wear-resistant pipe joint according to claim 1, characterized in that: The traction belt (5) is attached to the outer surface of the PTFE inner liner (1), and the traction belt (5) is arranged in an arc shape.
4. A lined, wear-resistant pipe joint according to claim 1, characterized in that: The reinforcing ring A (6) is fixedly connected to one of the flange joints (3), and the reinforcing ring B (8) is fixedly connected to the other flange joint (3).
5. A wear-resistant pipe joint lined with PTFE according to claim 1, characterized in that: An assembly platform (12) is provided on the outer wall of the flange joint (3), and an isolation strip (4) is adhered to the surface of the assembly platform (12).
6. A lined, wear-resistant pipe joint according to claim 5, characterized in that: The surface of the isolation strip (4) is covered with a warning strip (13), and the surface of the isolation strip (4) is provided with a buffer through hole (14).
7. A lined, wear-resistant pipe joint according to claim 6, characterized in that: The isolation strip (4) is located outside the reinforcement strip (7), and an isolation gap is provided between the isolation strip (4) and the reinforcement strip (7).