Quick disassembly and assembly connecting piece for steel lining polytetrafluoroethylene pipeline

Abstract

The utility model discloses a quick disassembly and assembly connecting piece for a steel lining polytetrafluoroethylene pipeline, and relates to the technical field of pipeline connection, the quick disassembly and assembly connecting piece comprises a pipe body, and the inner wall of the pipe body is connected with a rotating device in a sliding mode; through the cooperation of the rotating device and the locking device, the mounting and dismounting operation of the polytetrafluoroethylene pipeline can be completed in a short time through the sliding mode, the mounting and maintenance time is effectively saved, the locking device can play an effective locking role on the rotating device after the pipeline is mounted, the rotating device is prevented from sliding or loosening accidentally, and the practicability of the polytetrafluoroethylene pipeline is improved. The Teflon pipeline is firmly connected in the using process, potential safety hazards such as medium leakage caused by loose connection are avoided, the positioning ring can accurately determine the installation position of the Teflon pipeline, the rubber ring plays a role in buffering and sealing, the pipeline installation precision is guaranteed, and the service life of the Teflon pipeline is prolonged. And a medium can be prevented from leaking from a gap between the pipeline and the connecting piece.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, specifically a quick-assembly connector for steel-lined PTFE pipelines. Background Technology

[0002] In many industries such as chemical, pharmaceutical, and environmental protection, steel-lined PTFE pipes are widely used to transport various corrosive media such as strong acids, strong alkalis, and strong oxidants because they combine the high strength of steel pipes with the excellent corrosion resistance of PTFE.

[0003] Traditional PTFE-lined pipe connection methods, such as welding and flange connections, have many drawbacks. While welding can ensure the sealing and strength of the connection, the installation process is complex, requiring specialized welding equipment and technicians. Furthermore, welding can easily damage the PTFE lining material, affecting the pipe's corrosion resistance. Once a problem occurs at the weld, repairs are extremely difficult, often requiring large-scale cutting and replacement of the pipe, consuming significant manpower, resources, and time. In addition, whether welding or flange connections are used, regular maintenance, inspections, or replacement of parts of the pipe due to process changes all require considerable time for disassembly and reinstallation. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a quick-release connector for PTFE-lined steel pipes, which solves the problems of inconvenient installation and disassembly, easy loosening of connections, and poor sealing and positioning of PTFE-lined steel pipes.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick-assembly and disassembly connector for steel-lined PTFE pipes, comprising: a pipe body; a rotating device slidably connected to the inner wall of the pipe body; the rotating device enabling quick assembly and disassembly of the PTFE pipe through sliding; a locking device rotatably connected to the inner wall of the pipe body; a positioning device fixedly connected to the inner wall of the pipe body; a body slidably connected to the inner wall of the rotating device; the rotating device includes a passive tube; sliding rods symmetrically fixedly connected to the outer wall of the passive tube; and L-shaped grooves slidably connected to the outer wall of the sliding rods. The sliding rods can slide within the L-shaped grooves in the pipe body wall. This sliding method allows for the quick assembly and disassembly of the PTFE pipe.

[0008] Preferably, the outer wall of the passive tube is slidably connected to the inner wall of the tube body, the L-shaped grooves are symmetrically opened in the wall of the tube body, and the inner wall of the passive tube is slidably connected to the body. If frequent replacement or maintenance of PTFE pipes is required, this quick disassembly and assembly function can significantly reduce downtime and improve production efficiency.

[0009] Preferably, the locking device includes a connecting rod, with slip rings symmetrically fixedly connected to the outer wall of the connecting rod, and a limit frame rotatably connected to the outer wall of the slip rod. The locking device further enhances the stability of the connection between the connector and the PTFE pipe.

[0010] Preferably, the outer wall of the slip ring is slidably connected to the inner wall of the limiting frame through a sliding groove. The outer wall of the limiting frame is symmetrically fixedly connected to the outer wall of the pipe body. The L-shaped sliding groove is also opened in the inner wall of the limiting frame, which can effectively lock the rotating device, prevent it from sliding or loosening accidentally, ensure that the PTFE pipe is firmly connected during use, and avoid safety hazards such as medium leakage caused by loose connection.

[0011] Preferably, the positioning device includes a positioning ring, and rubber rings are symmetrically fixedly connected to the outer wall of the positioning ring. The positioning ring can accurately determine the installation position of the PTFE pipe, while the rubber rings play a role in buffering and sealing, which not only ensures the accuracy of pipe installation, but also prevents the medium from leaking from the gap between the pipe and the connector.

[0012] Preferably, the outer wall of the positioning ring is fixedly connected to the inner wall of the tube body, the side wall of the positioning ring is symmetrically in contact with the outer wall of the body, and the outer wall of the rubber ring is in contact with the outer wall of the body.

[0013] Beneficial effects

[0014] This utility model provides a quick-release connector for steel-lined PTFE pipes. It has the following advantages:

[0015] This utility model, through the combination of a rotating device and a locking device, allows for the installation and disassembly of PTFE pipes in a short time via a sliding mechanism, effectively saving installation and maintenance time. The locking device effectively locks the rotating device after pipe installation, preventing accidental sliding or loosening and ensuring a secure connection during use. This avoids safety hazards such as media leakage caused by loose connections. The positioning ring accurately determines the installation position of the PTFE pipe, while the rubber ring provides cushioning and sealing, ensuring not only the accuracy of pipe installation but also preventing media leakage from the gap between the pipe and the connector. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a cross-sectional structural diagram of the rotating device of this utility model;

[0019] Figure 4 This is a schematic diagram of the passive tube structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the positioning device of this utility model.

[0021] In the diagram: 1. Pipe body; 2. Rotating device; 20. Passive pipe; 21. Slide rod; 22. L-shaped slide groove; 3. Locking device; 30. Connecting rod; 31. Slip ring; 32. Limiting frame; 4. Positioning device; 40. Positioning ring; 41. Rubber ring; 5. Main body. Detailed Implementation

[0022] 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.

[0023] Example

[0024] Please see Figure 1-5 This utility model provides a technical solution: a quick-release connector for steel-lined PTFE pipes, comprising:

[0025] The inner wall of the pipe body 1 is slidably connected to a rotating device 2. The rotating device 2 allows for quick assembly and disassembly of the PTFE pipe by sliding. The inner wall of the pipe body 1 is rotatably connected to a locking device 3. The inner wall of the pipe body 1 is fixedly connected to a positioning device 4. The inner wall of the rotating device 2 is slidably connected to a body 5. Rotating the locking device 3 opens the passage of the rotating device 2. Then rotating the rotating device 2 allows it to slide out from the inner wall of the pipe body 1 for assembly and disassembly of the body 5.

[0026] The rotating device 2 includes a passive tube 20. A sliding rod 21 is symmetrically fixed to the outer wall of the passive tube 20. An L-shaped groove 22 is slidably connected to the outer wall of the sliding rod 21. The outer wall of the passive tube 20 is slidably connected to the inner wall of the pipe body 1. The L-shaped groove 22 is symmetrically opened in the wall of the pipe body 1. The body 5 is slidably connected to the inner wall of the passive tube 20. The body 5 is inserted into the inner wall of the passive tube 20 of the rotating device 2. Since the sliding rod 21 is symmetrically fixed to the outer wall of the passive tube 20, and the sliding rod 21 is slidably connected to the L-shaped groove 22 symmetrically opened in the wall of the pipe body 1, the passive tube 20 is pushed, causing the sliding rod 21 to slide along the L-shaped groove 22. During the sliding process, the body 5 is moved to the predetermined installation position. The design of the L-shaped groove allows the passive tube 20 to achieve a combination of rotation and linear movement at a certain angle when sliding, which facilitates the adjustment of the installation posture of the pipe, thereby quickly and accurately installing the PTFE pipe body 5 into place.

[0027] The locking device 3 includes a connecting rod 30, with a slip ring 31 symmetrically fixedly connected to the outer wall of the connecting rod 30. A limit frame 32 is rotatably connected to the outer wall of the slide rod 21. The outer wall of the slip ring 31 is slidably connected to the inner wall of the limit frame 32 through a sliding groove. The outer wall of the limit frame 32 is symmetrically fixedly connected to the outer wall of the tube body 1. An L-shaped sliding groove 22 is also opened in the inner wall of the limit frame 32. When the locking device 3 is unlocked, due to the sliding connection between the slip ring 31 and the limit frame 32 and the fixation of the limit frame 32, the rotation of the connecting rod 30 will drive the slip ring 31 to slide in the sliding groove in the inner wall of the limit frame 32, thereby restricting the position of the slide rod 21 by the limit frame 32 and preventing the rotating device 2 from falling off the inner wall.

[0028] The positioning device 4 includes a positioning ring 40, with rubber rings 41 symmetrically fixed to its outer wall. The outer wall of the positioning ring 40 is fixedly connected to the inner wall of the pipe body 1, and the side wall of the positioning ring 40 is symmetrically in contact with the outer wall of the main body 5. The outer wall of the rubber rings 41 is in contact with the outer wall of the main body 5. The positioning ring 40 in the positioning device 4 can accurately determine the installation position of the PTFE pipe, serving as a positioning reference. Simultaneously, the rubber rings 41, symmetrically fixed to the outer wall of the positioning ring 40, are in contact with the outer wall of the main body 5. The rubber rings 41 are elastic, acting as a buffer during pipe installation to prevent damage from hard impacts. Furthermore, the rubber rings 41 fill the small gaps between the pipe and the positioning ring 40, preventing media leakage from the gaps between the pipe and the connector, thus ensuring the sealing of the connection and installation accuracy.

[0029] When in use, the locking device 3 is rotated to open the passage of the rotating device 2, and then the rotating device 2 is rotated so that the rotating device 2 can slide out from the inner wall of the tube body 1 for disassembly and assembly of the main body 5.

[0030] When it is necessary to install a PTFE-lined pipe, the main body 5 is inserted into the inner wall of the passive pipe 20 of the rotating device 2. Since the outer wall of the passive pipe 20 is symmetrically fixed with sliding rods 21, and the sliding rods 21 are slidably connected to the L-shaped grooves 22 symmetrically opened in the wall of the pipe body 1, the passive pipe 20 is pushed to make the sliding rods 21 slide along the L-shaped grooves 22. During the sliding process, the main body 5 is moved to the predetermined installation position. The design of the L-shaped grooves allows the passive pipe 20 to achieve a combination of rotation and linear movement at a certain angle when sliding, which facilitates the adjustment of the installation posture of the pipe, thereby quickly and accurately installing the PTFE pipe body 5 into place.

[0031] When disassembly is required, the locking device 3 is unlocked. Due to the sliding connection between the slip ring 31 and the limiting frame 32 and the fixation of the limiting frame 32, the rotation of the connecting rod 30 will cause the slip ring 31 to slide in the groove on the inner wall of the limiting frame 32, thereby limiting the position of the sliding rod 21 by the limiting frame 32 and preventing the rotating device 2 from falling off the inner wall.

[0032] During the installation of the PTFE pipe body 5, the positioning ring 40 in the positioning device 4 accurately determines the installation position of the PTFE pipe, serving as a positioning reference. Simultaneously, the rubber rings 41 symmetrically fixed to the outer wall of the positioning ring 40 contact the outer wall of the body 5. The rubber rings 41 are elastic, acting as a buffer during pipe installation to prevent damage from hard impacts. Furthermore, the rubber rings 41 fill the tiny gaps between the pipe and the positioning ring 40, preventing leakage of the medium from the gap between the pipe and the connector, thus ensuring the sealing of the connection and the installation accuracy.

[0033] 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 the element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-connect fitting for steel-lined PTFE pipes, comprising: The tube body (1) is characterized by: The inner wall of the pipe body (1) is slidably connected to a rotating device (2), which allows the PTFE pipe to be quickly disassembled and assembled by sliding. The inner wall of the pipe body (1) is rotatably connected to a locking device (3), and the inner wall of the pipe body (1) is fixedly connected to a positioning device (4). The inner wall of the rotating device (2) is slidably connected to a body (5). The rotating device (2) includes a passive tube (20), and a slide rod (21) is symmetrically fixedly connected to the outer wall of the passive tube (20). An L-shaped slide groove (22) is slidably connected to the outer wall of the slide rod (21).

2. The quick-connect fitting for PTFE-lined steel pipes according to claim 1, characterized in that: The outer wall of the passive tube (20) is slidably connected to the inner wall of the tube body (1), the L-shaped groove (22) is symmetrically opened in the wall of the tube body (1), and the body (5) is slidably connected to the inner wall of the passive tube (20).

3. The quick-connect fitting for PTFE-lined steel pipes according to claim 1, characterized in that: The locking device (3) includes a connecting rod (30), and a slip ring (31) is symmetrically fixedly connected to the outer wall of the connecting rod (30). A limit frame (32) is rotatably connected to the outer wall of the slide rod (21).

4. A quick-connect fitting for steel-lined PTFE pipes according to claim 3, characterized in that: The outer wall of the slip ring (31) is slidably connected to the inner wall of the limiting frame (32) through a sliding groove. The outer wall of the limiting frame (32) is symmetrically fixedly connected to the outer wall of the tube (1). The L-shaped sliding groove (22) is also opened in the inner wall of the limiting frame (32).

5. A quick-connect fitting for steel-lined PTFE pipes according to claim 1, characterized in that: The positioning device (4) includes a positioning ring (40), and rubber rings (41) are symmetrically fixedly connected to the outer wall of the positioning ring (40).

6. A quick-connect fitting for PTFE-lined steel pipes according to claim 5, characterized in that: The outer wall of the positioning ring (40) is fixedly connected to the inner wall of the tube (1), the side wall of the positioning ring (40) is symmetrically in contact with the outer wall of the body (5), and the outer wall of the rubber ring (41) is in contact with the outer wall of the body (5).

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