Polytetrafluoroethylene pipe connecting structure

Abstract

The utility model discloses a polytetrafluoroethylene pipe connecting structure, which relates to the technical field of polytetrafluoroethylene pipes and comprises a connecting cylinder, and a sealing mechanism is arranged in the connecting cylinder. The sealing mechanism comprises a plurality of connecting plates, a moving rod, a sealing ring, a pressing ring and a fixing rod, the connecting plates are mounted on the inner wall of the connecting cylinder, and the moving rod is slidably mounted on one side of the corresponding connecting plate; according to the technical scheme, the sealing mechanism is arranged, the movable rods slide on the two sides of the connecting plate, the sealing ring can move on one side of the connecting plate through limiting of the movable rods, when pipes are connected, the pipes are inserted into the outer walls of the two ends of the connecting cylinder, and the sealing ring moves towards the pressing ring; the pressing ring presses the sealing ring from the inner ring, the sealing ring is pressed on the inner wall of the pipe, installation of the sealing ring is convenient, the sealing ring is directly inserted into the moving groove in the connecting plate through the moving rod, and the sealing ring is convenient to take down and replace.

Description

Technical Field

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

[0002] Polytetrafluoroethylene (PTFE) pipes are high-performance engineering plastic pipes with excellent chemical stability. They are resistant to all strong acids, strong alkalis, and strong oxidants, and do not react with various organic solvents. They are widely used for transporting highly corrosive gases and liquids at high temperatures. Currently, when connecting PTFE pipes, the pipes are connected to intermediate connecting pipes. Heating melts and bonds the ends of the pipes together. A rubber ring is required at the connection between the PTFE pipe and the intermediate connecting pipe for sealing. However, installing the sealing ring is laborious and inconvenient. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a polytetrafluoroethylene pipe connection structure to solve the problem that the sealing ring of the prior art is difficult to install and inconvenient to install.

[0004] In view of this, the present invention provides a polytetrafluoroethylene pipe connection structure, including a connecting cylinder, wherein a sealing mechanism is provided inside the connecting cylinder;

[0005] The sealing mechanism includes several connecting plates, a moving rod, a sealing ring, a pressing ring, and a fixing rod. Several connecting plates are installed on the inner wall of the connecting cylinder. The moving rod is slidably installed on one side of the corresponding connecting plate. The sealing ring is fixedly installed on one end of the moving rod. The fixing rod is fixedly installed on one side of the connecting plate. The pressing ring is fixedly installed on one end of the fixing rod.

[0006] Optionally, a mounting bracket is fixedly installed on the inner wall of the connecting cylinder, and several mounting holes are opened on both sides of the mounting bracket. The connecting plate is fixedly installed on the inner wall of the corresponding mounting bracket.

[0007] Optionally, the connecting plate has several threaded holes on both sides, and screws are threaded into the inner walls of the threaded holes, with the screws located at the corresponding mounting holes.

[0008] Optionally, the mounting bracket has mounting openings on both sides, and the movable rod and the fixed rod are located inside the corresponding mounting openings.

[0009] Optionally, several of the mounting brackets are symmetrically distributed vertically inside the connecting cylinder.

[0010] Optionally, the connecting plate has movable grooves on both sides, and the movable rod is slidably installed on the corresponding movable groove wall.

[0011] Optionally, the sealing ring is located on the outer ring of the pressing ring, and a plurality of the sealing rings and the pressing ring are respectively located at both ends of the connecting cylinder, with one end of the sealing ring extending to the corresponding two ends of the connecting cylinder.

[0012] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0013] 1. This utility model discloses a polytetrafluoroethylene (PTFE) pipe connection structure. By setting a sealing mechanism, the moving rod slides on both sides of the connecting plate. Through the limiting of several moving rods, the sealing ring can move to one side of the connecting plate. When connecting the pipe, the pipe is inserted into the outer wall of both ends of the connecting cylinder. The sealing ring moves towards the pressing ring. The pressing ring presses the sealing ring from the inner ring, pressing the sealing ring tightly against the inner wall of the pipe, which facilitates the installation of the sealing ring. Moreover, the sealing ring is directly inserted into the moving groove on the connecting plate through the moving rod, which makes it easy to remove and replace the sealing ring.

[0014] 2. The polytetrafluoroethylene pipe connection structure of this utility model uses a pressing ring to press the sealing ring, so that the sealing ring can be pressed more tightly against the inner wall of the pipe, and the sealing ring is located inside the pipe, reducing the aging of the sealing ring.

[0015] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a diagram of the mounting bracket for this utility model;

[0019] Figure 3 This is an installation diagram of the connecting plate of this utility model;

[0020] Figure 4 This is an installation diagram of the movable pole of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Connecting cylinder; 2. Mounting bracket; 3. Mounting port; 4. Mounting hole; 5. Connecting plate; 6. Moving groove; 7. Moving rod; 8. Sealing ring; 9. Pressing ring; 10. Fixing rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0023] The following describes a polytetrafluoroethylene (PTFE) pipe connection structure according to an embodiment of the present invention in detail with reference to the accompanying drawings.

[0024] Example 1

[0025] For easier understanding, please refer to Figures 1 to 4 This utility model provides an embodiment of a polytetrafluoroethylene (PTFE) pipe connection structure, including a connecting cylinder 1, with a sealing mechanism inside the connecting cylinder 1; the sealing mechanism includes several connecting plates 5, a moving rod 7, a sealing ring 8, a pressing ring 9, and a fixing rod 10. Several connecting plates 5 are installed on the inner wall of the connecting cylinder 1, the moving rod 7 is slidably installed on one side of the corresponding connecting plate 5, the sealing ring 8 is fixedly installed on one end of the moving rod 7, the fixing rod 10 is fixedly installed on one side of the connecting plate 5, and the pressing ring 9 is fixedly installed on one end of the fixing rod 10.

[0026] It should be noted that by setting a sealing mechanism, the moving rod 7 slides on both sides of the connecting plate 5. Through the limiting of several moving rods 7, the sealing ring 8 can move to one side of the connecting plate 5. When connecting the pipe, the pipe is inserted into the outer wall of both ends of the connecting cylinder 1, and the sealing ring 8 moves towards the pressing ring 9. The pressing ring 9 presses the sealing ring 8 from the inner ring, pressing the sealing ring 8 tightly against the inner wall of the pipe, which facilitates the installation of the sealing ring 8. The sealing ring 8 is also directly inserted into the moving groove 6 on the connecting plate 5 through the moving rod 7, which makes it easy to remove and replace the sealing ring 8. During the insertion process, the outer wall of the sealing ring 8 is attached to the inner wall surface of the pipe and moves towards the pressing ring 9 due to frictional resistance.

[0027] In some embodiments, such as Figure 2 As shown, a mounting bracket 2 is fixedly installed on the inner wall of the connecting cylinder 1. Several mounting holes 4 are opened on both sides of the mounting bracket 2, and the connecting plate 5 is fixedly installed on the inner wall of the corresponding mounting bracket 2.

[0028] It should be noted that the mounting bracket 2 can be installed on the inner wall of the connecting cylinder 1 by welding.

[0029] In some embodiments, such as Figure 2 As shown, the connecting plate 5 has several threaded holes on both sides, and screws are threaded into the inner wall of the threaded holes. The screws are located at the corresponding mounting holes 4. The mounting bracket 2 has mounting openings 3 on both sides, and the moving rod 7 and the fixed rod 10 are located inside the corresponding mounting openings 3.

[0030] It should be noted that by setting the mounting port 3, the moving rod 7 and the fixing rod 10 can be inserted into the mounting port 3 when installing the connecting plate 5, which facilitates the installation of the connecting plate 5.

[0031] In some embodiments, such as Figure 4 As shown, several mounting brackets 2 are symmetrically distributed inside the connecting cylinder 1. The connecting plate 5 has movable grooves 6 on both sides. The movable rod 7 is slidably installed on the groove wall of the corresponding movable groove 6. The sealing ring 8 is located on the outer ring of the pressing ring 9. Several sealing rings 8 and pressing rings 9 are located at both ends of the connecting cylinder 1 respectively. One end of the sealing ring 8 extends to the corresponding two ends of the connecting cylinder 1.

[0032] It should be noted that the sealing ring 8 is conical, and one end of the sealing ring 8 is fixed to the end face of both ends of the connecting cylinder 1. By setting the pressing ring 9 to press the sealing ring 8, the sealing ring 8 can be pressed more tightly against the inner wall of the pipe. Moreover, the sealing ring 8 is set inside the pipe, which reduces the aging of the sealing ring 8.

[0033] Working principle: When connecting PTFE pipes, the pipes are inserted into the outer walls of both ends of the connecting cylinder 1. The connecting cylinder 1 is located at the connection point of the inner wall of the pipe. During the insertion process, the outer wall of the sealing ring 8 is attached to the inner wall surface of the pipe. Due to frictional resistance, it moves towards the pressing ring 9. Then, the pipe connection ends are welded to the connecting cylinder 1.

[0034] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A polytetrafluoroethylene (PTFE) pipe connection structure, characterized in that: Includes a connecting cylinder (1), and a sealing mechanism is provided inside the connecting cylinder (1); The sealing mechanism includes several connecting plates (5), a moving rod (7), a sealing ring (8), a pressing ring (9), and a fixing rod (10). Several connecting plates (5) are installed on the inner wall of the connecting cylinder (1). The moving rod (7) is slidably installed on one side corresponding to the connecting plate (5). The sealing ring (8) is fixedly installed on one end of the moving rod (7). The fixing rod (10) is fixedly installed on one side of the connecting plate (5). The pressing ring (9) is fixedly installed on one end of the fixing rod (10).

2. The polytetrafluoroethylene pipe connection structure according to claim 1, characterized in that: The inner wall of the connecting cylinder (1) is fixedly installed with a mounting bracket (2), and several mounting holes (4) are opened on both sides of the mounting bracket (2). The connecting plate (5) is fixedly installed on the inner wall of the corresponding mounting bracket (2).

3. The polytetrafluoroethylene pipe connection structure according to claim 1, characterized in that: The connecting plate (5) has several threaded holes on both sides, and screws are threaded into the inner wall of the threaded holes. The screws are located at the corresponding mounting holes (4).

4. The polytetrafluoroethylene pipe connection structure according to claim 2, characterized in that: The mounting bracket (2) has mounting openings (3) on both sides, and the moving rod (7) and the fixed rod (10) are located inside the corresponding mounting openings (3).

5. The polytetrafluoroethylene pipe connection structure according to claim 2, characterized in that: Several of the mounting brackets (2) are symmetrically distributed inside the connecting cylinder (1).

6. The polytetrafluoroethylene pipe connection structure according to claim 1, characterized in that: The connecting plate (5) has movable grooves (6) on both sides, and the movable rod (7) is slidably installed on the groove wall corresponding to the movable groove (6).

7. The polytetrafluoroethylene pipe connection structure according to claim 1, characterized in that: The sealing ring (8) is located on the outer ring of the pressing ring (9), and several sealing rings (8) and pressing rings (9) are located at both ends of the connecting cylinder (1), with one end of the sealing ring (8) extending to the corresponding two ends of the connecting cylinder (1).

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