Steel lined polytetrafluoroethylene pipe bend

Abstract

The utility model relates to the technical field of lining polytetrafluoroethylene pipeline, disclose a kind of steel lining polytetrafluoroethylene pipeline elbow, including elbow body, the inner wall of elbow body is fixedly connected with inner lining pipe, the inner wall of inner lining pipe is fixedly connected with flow guide uniform distribution disc, the outer wall of press bar is fixedly connected with limit disc, the outer wall of first outer ring is fixedly connected with limit plate, the outer wall of limit plate is slidably connected with second outer ring, the inner wall of second outer ring is fixedly connected with pipeline body, the inside of pipeline body is provided with dismounting assembly, and the dismounting assembly is used to remove the connection of pipeline. In the utility model, through the cooperation between elbow body, inner lining pipe, press bar, limit disc and first spring, the effect of quick dismounting and installation of elbow is achieved, which is beneficial to quick positioning and installation, and meets the efficient construction needs of chemical industry, corrosion prevention and other scenes, and achieves the effect of greatly shortening construction period.

Description

Technical Field

[0001] This utility model relates to the field of polytetrafluoroethylene (PTFE) lined pipe technology, and in particular to a steel PTFE lined pipe elbow. Background Technology

[0002] Pipe elbows are key connectors in piping systems used to change the direction of media flow, and are widely used in chemical, petroleum, and pharmaceutical industries. Steel-lined PTFE pipe elbows, on the other hand, have a PTFE lining on the inner wall of a traditional metal elbow. Through its excellent corrosion resistance and anti-adhesion properties, it enables the safe transport of highly corrosive fluids, while simultaneously maintaining the mechanical strength of the metal structure and the chemical stability of the polymer material.

[0003] Currently, most elbows of this type use flange or threaded connections, requiring multiple sets of bolts to be tightened sequentially to achieve a seal. This results in a cumbersome and time-consuming installation process. Especially in corrosion protection construction scenarios involving frequent disassembly, the existing structure lacks a rapid positioning and installation mechanism, making it prone to seal failure due to installation deviations, severely impacting construction efficiency and safety. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a steel-lined polytetrafluoroethylene pipe elbow, which aims to improve the problem of sealing failure due to installation deviation caused by the lack of a quick positioning and installation structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steel-lined polytetrafluoroethylene (PTFE) pipe elbow, comprising an elbow body, an inner liner fixedly connected to the inner wall of the elbow body, a flow distribution disc fixedly connected to the inner wall of the inner liner, a first outer ring fixedly connected to the outer wall of the elbow body, a pressing rod slidably connected to the inside of the first outer ring, a limiting disc fixedly connected to the outer wall of the pressing rod, the limiting disc slidably connected to the inside of the first outer ring, one end of a first spring fixedly connected to the outer wall of the limiting disc, the other end of the first spring fixedly connected to the inside of the first outer ring, a limiting plate fixedly connected to the outer wall of the first outer ring, a second outer ring slidably connected to the outer wall of the limiting plate, a pipe body fixedly connected to the inner wall of the second outer ring, and a disassembly assembly provided inside the pipe body for disconnecting the pipe.

[0006] Through the above technical solution: pressing down the pressing rod 5 pushes the T-shaped rod 11 inside the first outer ring 4, causing the T-shaped rod 11 to slide inside the second outer ring 9 and disengage from the first outer ring 4. Releasing the pressing rod 5 pushes the limiting plate 6 through the elastic force of the first spring 7, causing the pressing rod 5 to reset. This achieves quick disassembly and installation of the elbow, enabling rapid positioning and installation, avoiding leakage problems caused by improper installation, adapting to the efficient construction needs of chemical, corrosion-resistant and other scenarios, and achieving the effect of significantly shortening the construction cycle.

[0007] Preferably, the disassembly assembly includes a T-shaped rod, the outer wall of which is slidably connected to the inside of a second outer ring, the outer wall of which is slidably connected to the inside of a first outer ring, the outer wall of which abuts against the outer wall of a pressing rod, and one end of a second spring is fixedly connected to the outer wall of the T-shaped rod, the other end of which is fixedly connected to the inside of the second outer ring.

[0008] Preferably, an outer connecting block is fixedly connected to the outer wall of the elbow body, and a filter plate is slidably connected to the inner wall of the outer connecting block.

[0009] Preferably, the outer wall of the filter plate is slidably connected to the inside of the elbow body, the outer wall of the filter plate is slidably connected to the inside of the inner liner tube, and the outer wall of the outer block is fixedly connected to a support plate.

[0010] Preferably, a cross plate is rotatably connected inside the support plate, and a fixed shaft is fixedly connected to the outer wall of the cross plate.

[0011] Preferably, the cross plate is rotatably connected to a cross shaft, the outer wall of the cross shaft is slidably connected to the inside of the outer block, and the outer wall of the cross shaft is slidably connected to the inside of the filter plate.

[0012] Preferably, one end of a third spring is fixedly connected to the outer wall of the cross shaft, and the other end of the third spring is fixedly connected to a U-shaped plate, with the outer wall of the U-shaped plate fixedly connected to the outer wall of the outer block.

[0013] Preferably, the first outer ring has an internal threaded connection to a bolt, and the outer wall of the bolt is slidably connected to the inside of the second outer ring.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the elbow body, inner liner, flow distribution plate, first outer ring, pressing rod, limiting plate and first spring cooperate with each other to achieve the effect of quick disassembly and installation of the elbow. This is conducive to quick positioning and installation, avoids leakage problems caused by improper installation, adapts to the high-efficiency construction needs of chemical, anti-corrosion and other scenarios, and achieves the effect of greatly shortening the construction cycle.

[0016] 2. In this utility model, the filter plate is disassembled and installed by the cooperation between the external block, filter plate, fixed shaft, support plate, cross plate and cross shaft. This is conducive to timely removal of trapped impurities, avoiding the decrease in conveying efficiency caused by pipeline blockage, and reducing the frictional wear of impurities on the polytetrafluoroethylene liner, thereby extending the overall service life of the elbow. Attached Figure Description

[0017] Figure 1 This is a perspective view of a steel-lined polytetrafluoroethylene pipe elbow proposed in this utility model.

[0018] Figure 2 This is a partial structural diagram of the flow distribution plate of a steel-lined polytetrafluoroethylene pipe elbow proposed in this utility model.

[0019] Figure 3 This is a partial cross-sectional view of the elbow body of a steel-lined polytetrafluoroethylene pipe elbow proposed in this utility model.

[0020] Figure 4 This is a partial cross-sectional view of the first outer ring of a steel-lined polytetrafluoroethylene pipe elbow proposed in this utility model.

[0021] Figure 5 This is a partial structural diagram of the filter plate of a steel-lined polytetrafluoroethylene pipe elbow proposed in this utility model.

[0022] Figure 6 This is a partial structural diagram of the cross shaft of a steel-lined polytetrafluoroethylene pipe elbow proposed in this utility model.

[0023] Figure 7 This is a partial structural diagram of the bolts in a steel-lined polytetrafluoroethylene pipe elbow proposed in this utility model.

[0024] Legend:

[0025] 1. Elbow body; 2. Inner liner; 3. Flow distribution disc; 4. First outer ring; 5. Pressing rod; 6. Limiting disc; 7. First spring; 8. Limiting plate; 9. Second outer ring; 10. Pipe body; 11. T-shaped rod; 12. Second spring; 13. Outer block; 14. Filter plate; 15. Fixed shaft; 16. Support plate; 17. Cross plate; 18. Cross shaft; 19. U-shaped plate; 20. Third spring; 21. Bolt. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example 1:

[0028] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 An embodiment of this utility model provides: a steel-lined polytetrafluoroethylene pipe elbow, including an elbow body 1, an inner liner 2 fixedly connected to the inner wall of the elbow body 1, a flow distribution plate 3 fixedly connected to the inner wall of the inner liner 2, a first outer ring 4 fixedly connected to the outer wall of the elbow body 1, a pressing rod 5 slidably connected inside the first outer ring 4, a limiting plate 6 fixedly connected to the outer wall of the pressing rod 5, a limiting plate 6 slidably connected to the outer wall of the limiting plate 6 inside the first outer ring 4, one end of a first spring 7 fixedly connected to the outer wall of the limiting plate 6, the other end of the first spring 7 fixedly connected to the inner wall of the first outer ring 4, a limiting plate 8 fixedly connected to the outer wall of the first outer ring 4, a second outer ring 9 slidably connected to the outer wall of the limiting plate 8, a pipe body 10 fixedly connected to the inner wall of the second outer ring 9, and a disassembly assembly provided inside the pipe body 10 for disconnecting the pipe;

[0029] Specifically, the elbow body 1 supports and fixes the inner liner 2. The inner liner 2 utilizes the properties of polytetrafluoroethylene (PTFE) to enhance the elbow's corrosion resistance and other properties, protecting it. The inner liner 2 also supports and fixes the flow distribution disc 3, guiding and distributing the fluid passing through the elbow, reducing flow resistance and turbulence. The elbow body 1 supports and fixes the first outer ring 4, which in turn supports and slides the pressing rod 5. Movement of the pressing rod 5 allows the disassembly assembly to detach from the first outer ring 4. Rod 5 fixes the limiting plate 6, and the limiting plate 6 fixes one end of the first spring 7. The first outer ring 4 fixes the other end of the first spring 7. The elastic force of the first spring 7 will reset the pressing rod 5 after use. The first outer ring 4 supports and fixes the limiting plate 8. The limiting plate 8 connects the first outer ring 4 and the second outer ring 9, limiting and guiding them. This ensures that the first outer ring 4 and the second outer ring 9 are stably and vertically connected, and ensures a stable connection between the holes inside the elbow body 1 and the pipe body 10.

[0030] Reference Figure 3 and Figure 4The disassembly assembly includes a T-shaped rod 11, the outer wall of which is slidably connected to the inside of the second outer ring 9, the outer wall of which is slidably connected to the inside of the first outer ring 4, the outer wall of which abuts against the outer wall of the pressing rod 5, and one end of the second spring 12 is fixedly connected to the outer wall of the T-shaped rod 11, and the other end of the second spring 12 is fixedly connected to the inside of the second outer ring 9.

[0031] Specifically, the first outer ring 4 and the second outer ring 9 support the sliding of the T-shaped rod 11. The outer wall of the T-shaped rod 11 has a disc, which can prevent the T-shaped rod 11 from dislodging from the interior of the second outer ring 9 due to the elastic force of the second spring 12. The T-shaped rod 11 abuts against the outer wall of the pressing rod 5 to achieve locking and unlocking.

[0032] Reference Figure 2 , Figure 5 and Figure 6 An outer block 13 is fixedly connected to the outer wall of the elbow body 1. A filter plate 14 is slidably connected to the inner wall of the outer block 13. The outer wall of the filter plate 14 is slidably connected to the inside of the elbow body 1 and the inner wall of the filter plate 14 is slidably connected to the inside of the inner liner tube 2. A support plate 16 is fixedly connected to the outer wall of the outer block 13. A cross plate 17 is rotatably connected to the inside of the support plate 16. A fixed shaft 15 is fixedly connected to the outer wall of the cross plate 17. A cross shaft 18 is rotatably connected to the inside of the cross plate 17. The outer wall of the cross shaft 18 is slidably connected to the inside of the outer block 13 and the outer wall of the cross shaft 18 is slidably connected to the inside of the filter plate 14. One end of a third spring 20 is fixedly connected to the outer wall of the cross shaft 18. The other end of the third spring 20 is fixedly connected to a U-shaped plate 19. The outer wall of the U-shaped plate 19 is fixedly connected to the outer wall of the outer block 13.

[0033] Specifically, the elbow body 1 supports and fixes the outer block 13. The elbow body 1, inner liner 2, and outer block 13 support and slide the filter plate 14. The filter plate 14 slides in the groove inside the inner liner 2, ensuring the elbow's sealing. The filter plate 14 filters impurities in the fluid, keeping it clean. The outer block 13 supports and fixes the support plate 16. The cross plate 17 fixes the fixed shaft 15. The outer wall of the cross plate 17 has a rotating shaft, which is supported by the support plate 16. The pivot of the cross plate 17 supports rotation. The holes inside the cross plate 17 are larger than the shaft size of the outer wall of the cross shaft 18, which ensures stability when the cross shaft 18 is pulled by the cross plate 17. The outer block 13 and the filter plate 14 support the sliding of the cross shaft 18, allowing the filter plate 14 to be disassembled and replaced. The outer block 13 supports and fixes the U-shaped plate 19. The elastic force of the third spring 20 can reset the moved cross shaft 18 and fix the replaced filter plate 14.

[0034] Example 2:

[0035] Reference Figure 7 The first outer ring 4 has an internal threaded connection to a bolt 21, and the outer wall of the bolt 21 is slidably connected to the inside of the second outer ring 9.

[0036] Specifically, the first outer ring 4 supports the rotation of the bolt 21 through the thread, and the second outer ring 9 supports the sliding of the bolt 21, thus ensuring the connection between the first outer ring 4 and the second outer ring 9.

[0037] Working principle: When the elbow is needed, pushing the first outer ring 4 causes the limiting plate 8 to slide inside the second outer ring 9. After the limiting plate 8 moves to the bottom, the T-shaped rod 11 will enter the interior of the first outer ring 4 through the elastic force of the second spring 12, connecting the elbow body 1 and the pipe body 10, thus connecting the pipe and the elbow. When replacement or disassembly is required, pressing down the pressing rod 5 pushes the T-shaped rod 11 inside the first outer ring 4, causing the T-shaped rod 11 to slide inside the second outer ring 9 and disengage from the interior of the first outer ring 4, releasing the fixation of the elbow. Lifting the elbow body 1 allows the elbow to disengage from the pipe connection. Releasing the pressing rod 5 pushes the limiting plate 6 through the elastic force of the first spring 7, causing the pressing rod 5 to reset, thus improving the next use. This enables quick disassembly and installation of the elbow, allowing for rapid positioning and installation, avoiding leakage problems caused by improper installation. It is suitable for efficient construction needs in chemical, corrosion-resistant, and other scenarios, achieving a significant reduction in construction cycle.

[0038] After the elbow is installed, press the fixed shaft 15 to drive the cross plate 17 to rotate inside the support plate 16. When the cross plate 17 rotates, it drives the cross shaft 18 to slide inside the outer block 13 and disengage from the filter plate 14. Pull the filter plate 14 to slide on the inner wall of the outer block 13 to disengage from the elbow, thus replacing the filter plate 14. Release the fixed shaft 15 and the cross shaft 18 will be reset by the elastic force of the third spring 20, allowing the cross shaft 18 to enter the replaced filter plate 14. This allows the filter plate 14 to be disassembled and installed, which can remove the trapped impurities in time, avoid the decrease in conveying efficiency caused by pipeline blockage, and reduce the frictional wear of impurities on the polytetrafluoroethylene liner, thereby extending the overall service life of the elbow.

[0039] In practical use, this elbow not only allows for quick disassembly and installation, but also enables rapid positioning and installation, avoiding leakage problems caused by improper installation. It is suitable for efficient construction needs in chemical, corrosion-resistant, and other scenarios, significantly shortening the construction cycle. In addition, it allows for the disassembly and installation of the filter plate 14, which can promptly remove trapped impurities, preventing pipeline blockage and reduced conveying efficiency. At the same time, it can reduce frictional wear of impurities on the PTFE lining, thereby extending the overall service life of the elbow.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 steel-lined polytetrafluoroethylene pipe elbow, comprising an elbow body (1), characterized in that: The inner wall of the elbow body (1) is fixedly connected to an inner liner tube (2), the inner wall of the inner liner tube (2) is fixedly connected to a flow distribution plate (3), the outer wall of the elbow body (1) is fixedly connected to a first outer ring (4), the inner wall of the first outer ring (4) is slidably connected to a pressing rod (5), the outer wall of the pressing rod (5) is fixedly connected to a limiting plate (6), the outer wall of the limiting plate (6) is slidably connected to the inner wall of the first outer ring (4), the outer wall of the limiting plate (6) is fixedly connected to one end of a first spring (7), the other end of the first spring (7) is fixedly connected to the inner wall of the first outer ring (4), the outer wall of the first outer ring (4) is fixedly connected to a limiting plate (8), the outer wall of the limiting plate (8) is slidably connected to a second outer ring (9), the inner wall of the second outer ring (9) is fixedly connected to a pipe body (10), the inner wall of the pipe body (10) is provided with a disassembly assembly, the disassembly assembly is used to disconnect the pipe.

2. The steel-lined polytetrafluoroethylene pipe elbow according to claim 1, characterized in that: The disassembly assembly includes a T-shaped rod (11), the outer wall of which is slidably connected to the inside of the second outer ring (9), the outer wall of which is slidably connected to the inside of the first outer ring (4), the outer wall of which abuts against the outer wall of the pressing rod (5), and one end of the second spring (12) is fixedly connected to the outer wall of the T-shaped rod (11), the other end of which is fixedly connected to the inside of the second outer ring (9).

3. The steel-lined polytetrafluoroethylene pipe elbow according to claim 1, characterized in that: An outer block (13) is fixedly connected to the outer wall of the elbow body (1), and a filter plate (14) is slidably connected to the inner wall of the outer block (13).

4. A steel-lined polytetrafluoroethylene pipe elbow according to claim 3, characterized in that: The outer wall of the filter plate (14) is slidably connected to the inside of the elbow body (1), the outer wall of the filter plate (14) is slidably connected to the inside of the inner liner tube (2), and the outer wall of the outer block (13) is fixedly connected to the support plate (16).

5. A steel-lined polytetrafluoroethylene pipe elbow according to claim 4, characterized in that: The support plate (16) is rotatably connected to a cross plate (17), and the outer wall of the cross plate (17) is fixedly connected to a fixed shaft (15).

6. A steel-lined polytetrafluoroethylene pipe elbow according to claim 5, characterized in that: The cross plate (17) is rotatably connected to a cross shaft (18), the outer wall of the cross shaft (18) is slidably connected to the inside of the outer block (13), and the outer wall of the cross shaft (18) is slidably connected to the inside of the filter plate (14).

7. A steel-lined polytetrafluoroethylene pipe elbow according to claim 6, characterized in that: One end of a third spring (20) is fixedly connected to the outer wall of the cross shaft (18), and the other end of the third spring (20) is fixedly connected to a U-shaped plate (19). The outer wall of the U-shaped plate (19) is fixedly connected to the outer wall of the outer block (13).

8. A steel-lined polytetrafluoroethylene pipe elbow according to claim 1, characterized in that: The first outer ring (4) is internally threaded with a bolt (21), and the outer wall of the bolt (21) is slidably connected to the inside of the second outer ring (9).

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