Quick release pipe seal locking device

Abstract

The utility model relates to pipeline connection and sealing technical field discloses quick detachable pipe sealing locking device, including pipe head and the sealing cover of setting in the pipe head outside, the outer wall fixed connection of pipe head has the guide sliding block of area limiting groove, the guide sliding groove and the rotation groove of inside setting of sealing cover cooperate with guide sliding block, set up on sealing cover has the dismounting mechanism, and the dismounting mechanism contains limit stop, connecting rod, spring and quick detachable ring, still set up in sealing cover is sealed mechanism, and sealed mechanism contains conical sealing plug, flexible filling ring, sealing ring, extrusion ring, sliding frame, sliding block one and threaded shaft, and the lock is realized through the movement cooperation of guide sliding block in guide sliding groove and rotation groove and the engagement of limit stop, the utility model discloses through the cooperation of guide sliding limit structure and inside and outside double sealing assembly, realized the quick dismounting and positioning of sealing cover, solved the problem that single sealing is easy to leak under high pressure environment effectively, improved construction efficiency and sealing reliability significantly.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection and sealing technology, and in particular to a quick-release pipe sealing and locking device. Background Technology

[0002] In the production, processing, pressure testing, transportation and storage of fluid transport pipelines, in order to prevent leakage of the medium inside the pipe or the intrusion of external impurities into the pipe, it is necessary to seal the pipe ends. The currently widely used pipe end sealing method is to achieve the connection by machining external threads on the outer wall of the pipe end and internal threads on the inner wall of the sealing cap.

[0003] When installing or removing this type of threaded connection, the operator must continuously rotate the sealing cap along the helical direction of the thread until it is fully tightened or disengaged. When the pipe diameter is large or the thread is long, this repeated tightening action not only consumes a lot of time and manpower, but also, in narrow spaces or test scenarios where frequent sealing operations are required, the low disassembly and assembly efficiency of the threaded connection cannot meet the needs of fast-paced production operations.

[0004] In addition, existing threaded sealing structures mainly rely on the preload of the threads themselves to maintain the sealing state. Without an additional locking mechanism, once the internal pressure of the pipeline system fluctuates or is subjected to external mechanical vibration, the threaded connection will loosen, leading to sealing failure. If the threads are over-tightened to prevent loosening, it will aggravate the wear of the thread profile and further increase the difficulty of subsequent disassembly, making it difficult to achieve rapid disassembly and assembly while ensuring connection stability and sealing reliability.

[0005] Therefore, this utility model proposes a quick-release pipe sealing and locking device to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology where pipe sealing devices generally adopt the threaded screw connection method, resulting in a cumbersome and time-consuming disassembly and assembly process, low construction efficiency, and easy loosening and sealing failure under vibration or pressure fluctuation environment, this utility model aims to provide a quick-release pipe sealing and locking device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a quick-release pipe sealing and locking device, including: a pipe head and a sealing sleeve sleeved on the outside of the pipe head. A guide slider is fixedly connected to the outer wall of the pipe head. A limit groove is opened on the top of the guide slider. A guide groove is opened on the bottom inner side of the sealing sleeve to slide with the guide slider. A rotating groove is opened on the upper middle part of the inner side of the sealing sleeve to communicate with the guide groove.

[0008] The sealing sleeve is equipped with a disassembly and assembly mechanism, which includes a limiting block that is slidably connected to the inner wall of the rotating groove, a connecting rod that is fixedly connected to the top of the limiting block, a spring that is sleeved on the outer wall of the connecting rod, and a quick-release ring that is fixedly connected to the top of the connecting rod. The connecting rod passes through the top of the sealing sleeve.

[0009] Furthermore, the sealing sleeve is also equipped with a sealing mechanism, which includes a conical sealing plug fixedly connected to the top of the inner side of the sealing sleeve, a flexible filling ring fixedly connected to the outer wall of the conical sealing plug, a sealing ring fixedly connected to the top of the tube head, a compression ring slidably connected to the inner wall of the sealing sleeve, a sliding frame fixedly connected to the top of the compression ring, a slider one fixedly connected to the middle of the sliding frame, and a threaded shaft threadedly connected to the inside of the slider one. The threaded shaft is rotatably connected to the inner wall of the sealing sleeve.

[0010] Preferably, the number of guide blocks is set to be multiple and evenly distributed around the outer wall of the tube head. The number and position of the guide grooves correspond one-to-one with the guide blocks. The guide grooves extend along the axial direction of the sealing sleeve and the bottom end of the guide grooves extends to the bottom edge of the sealing sleeve. The multi-point guidance ensures the stability of the sealing sleeve insertion process.

[0011] Preferably, the rotating groove is opened along the circumference of the sealing sleeve, and the height of the inner wall of the rotating groove is greater than the height of the guide slider, so that the sealing sleeve can rotate relative to the tube head after the guide slider enters the rotating groove, thereby realizing the switching from the insertion state to the locking state.

[0012] Preferably, the bottom end of the spring abuts against the top of the limiting block, and the top end of the spring abuts against the inner top wall of the rotating groove. The limiting block is inserted into the limiting groove under the elastic force of the spring, and the quick-release ring is exposed above the sealing sleeve. The preload of the spring ensures that the limiting block restricts the rotation of the sealing sleeve and prevents accidental loosening.

[0013] Preferably, the conical sealing plug has an inverted frustum structure, the bottom diameter of the conical sealing plug is smaller than the inner diameter of the tube head, and multiple flexible filling rings are equidistantly arranged along the axial direction of the conical sealing plug. The outer wall of the flexible filling ring is interference-fitted with the inner wall of the tube head to form a multi-level sealing defense line of the inner plug type.

[0014] Preferably, the extrusion ring is located directly above the sealing ring, the bottom of the extrusion ring abuts against the top of the sealing ring, the sealing ring is embedded in the annular groove at the top of the tube head, and the outer diameter of the extrusion ring is adapted to the inner diameter of the sealing sleeve, ensuring that the extrusion ring can press the sealing ring vertically to produce an end face sealing effect.

[0015] Preferably, the sliding frame has a radial structure, the outer end of the sliding frame is fixedly connected to the top surface of the extrusion ring, the inner end of the sliding frame converges and is fixedly connected to the outer wall of the first slider, the outer wall of the first slider is provided with an anti-rotation plane or an anti-rotation key, and the inner wall of the sealing sleeve is correspondingly provided with an anti-rotation structure to prevent the first slider from rotating with the threaded shaft and convert the rotational motion into linear motion.

[0016] Preferably, the threaded shaft is arranged along the central axis of the sealing sleeve, the top end of the threaded shaft passes through the top wall of the sealing sleeve and is rotatably connected to the sealing sleeve, and an adjustment knob is provided at one end of the threaded shaft located outside the sealing sleeve. The threaded shaft and the slider form a screw and nut transmission pair, which facilitates the operator to manually adjust the tightness of the internal sealing mechanism from the outside.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model solves the problem that the pipe sealing device in the prior art usually adopts threaded screwing or flange connection, which leads to a complicated and time-consuming disassembly and assembly process. It sets up a snap-on quick-release structure between the pipe head and the sealing sleeve, consisting of a guide slider, a rotating groove, a spring and a limiting block. It achieves the effect of quick positioning, firm locking and convenient disassembly of the sealing sleeve without the need for additional tools, which significantly improves construction efficiency.

[0019] 2. This utility model solves the problem of gap leakage that easily occurs in the existing single sealing structure when there are deviations in pipe size or under high pressure by integrating a conical sealing plug with a flexible filling ring inside the sealing sleeve and an external sealing by a threaded shaft driving the extrusion ring to pressurize the end face of the sealing ring. It achieves the effects of double protection inside and outside, adaptive filling of gaps and active enhancement of sealing pressure, which greatly improves the sealing reliability and safety of the device under high pressure fluid conditions. Attached Figure Description

[0020] Figure 1 This is a perspective view of the quick-release pipe sealing and locking device proposed in this utility model;

[0021] Figure 2 This is an exploded view of the sealing mechanism of the quick-release pipe sealing and locking device proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the disassembly and assembly mechanism of the quick-release pipe sealing and locking device proposed in this utility model;

[0023] Figure 4 This is a cross-sectional view of the sealing sleeve of the quick-release pipe sealing and locking device proposed in this utility model.

[0024] Legend:

[0025] 1. Pipe end; 2. Disassembly and assembly mechanism; 21. Guide slider; 22. Limiting groove; 23. Rotating groove; 24. Limiting block; 25. Spring; 26. Connecting rod; 27. Quick release ring; 28. Guide groove; 3. Sealing mechanism; 31. Conical sealing plug; 32. Flexible filling ring; 33. Sealing ring; 34. Extrusion ring; 35. Sliding frame; 36. Slider one; 37. Threaded shaft; 4. Sealing sleeve. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in 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 a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] Example:

[0028] Please refer to Figures 1 to 4 This utility model provides a quick-release pipe sealing and locking device, which aims to solve the structural defects of existing pipe sealing devices, such as cumbersome installation and disassembly processes and insufficient sealing reliability under high pressure.

[0029] Please refer to Figures 1 to 4 The quick-release pipe sealing and locking device includes a pipe head 1 and a sealing sleeve 4 fitted over the pipe head 1. The pipe head 1 is the end structure of the pipe to be sealed or a connector fixedly connected to the end of the pipe. Guide sliders 21 are fixedly connected around the outer wall of the pipe head 1. Multiple guide sliders 21 are evenly distributed around the outer wall of the pipe head 1. A limiting groove 22 is formed on the top of each guide slider 21. A guide groove 28 is formed on the bottom inner side of the sealing sleeve 4 to slide and engage with the guide sliders 21. The number and position of the sliding grooves 28 correspond one-to-one with the guide sliders 21. The guide grooves 28 extend along the axial direction of the sealing sleeve 4 and the bottom end of the guide grooves 28 extends to the bottom edge of the sealing sleeve 4. A rotating groove 23 communicating with the guide grooves 28 is provided in the upper middle part of the inner side of the sealing sleeve 4. The rotating groove 23 is opened along the circumference of the sealing sleeve 4. The height of the inner wall of the rotating groove 23 is greater than the height of the guide slider 21, so that the sealing sleeve 4 can rotate relative to the pipe head 1 after the guide slider 21 enters the rotating groove 23.

[0030] The sealing sleeve 4 is provided with a disassembly and assembly mechanism 2 for quick locking and unlocking. The disassembly and assembly mechanism 2 includes a limiting block 24 slidably connected to the inner wall of the rotating groove 23, a connecting rod 26 fixedly connected to the top of the limiting block 24, a spring 25 sleeved on the outer wall of the connecting rod 26, and a quick-release ring 27 fixedly connected to the top of the connecting rod 26. The connecting rod 26 passes through the top of the sealing sleeve 4. The sealing sleeve 4 is also provided with a sealing mechanism 3 for ensuring the sealing performance of the pipe opening. The sealing mechanism 3 includes a conical sealing plug 31 fixedly connected to the top of the inner side of the sealing sleeve 4, a flexible filling ring 32 fixedly connected to the outer wall of the conical sealing plug 31, a sealing ring 33 fixedly connected to the top of the pipe head 1, a compression ring 34 slidably connected to the inner wall of the sealing sleeve 4, a sliding frame 35 fixedly connected to the top of the compression ring 34, a slider 36 fixedly connected to the middle of the sliding frame 35, and a threaded shaft 37 threadedly connected to the inside of the slider 36. The threaded shaft 37 is rotatably connected to the inner wall of the sealing sleeve 4.

[0031] Please refer to Figure 3 and Figure 4 The limiting block 24 in the disassembly and assembly mechanism 2 is slidably connected to the inner wall of the rotating groove 23 inside the sealing sleeve 4. The rotating groove 23 provides space for the limiting block 24 to move circumferentially along the sealing sleeve 4. The bottom end of the connecting rod 26 is fixedly connected to the top of the limiting block 24. The connecting rod 26 extends vertically upward and passes through the through hole at the top of the sealing sleeve 4. A spring 25 is sleeved on the outer wall of the connecting rod 26. The bottom end of the spring 25 abuts against the top of the limiting block 24, and the top end of the spring 25 abuts against the inner top wall of the rotating groove 23. The spring 25 is always in a compressed or pre-tightened state to provide a downward reset force. Under the action of the spring 25, the limiting block 24 tends to move downward and get stuck in the top limiting groove 22 of the guide slider 21.

[0032] The quick-release ring 27 is fixedly connected to the top of all the connecting rods 26 extending outside the sealing sleeve 4. The quick-release ring 27 is exposed above the sealing sleeve 4 so that the operator can hold and pull it. By pulling the quick-release ring 27 upward, the connecting rod 26 and the limiting block 24 can overcome the resistance of the spring 25 and move upward, thereby causing the limiting block 24 to disengage from the limiting groove 22 and realize the unlocking function.

[0033] The conical sealing plug 31 in the sealing mechanism 3 has an inverted frustum structure and is fixedly connected to the center of the top of the inner side of the sealing sleeve 4. The bottom diameter of the conical sealing plug 31 is smaller than the inner diameter of the tube head 1 so as to facilitate insertion into the tube head 1. Multiple flexible filling rings 32 are equidistantly arranged along the axial direction of the conical sealing plug 31 and fixedly connected to the outer wall of the conical sealing plug 31. The outer wall of the flexible filling ring 32 and the inner wall of the tube head 1 are designed to be interference fit. When the conical sealing plug 31 is inserted into the tube head 1, the flexible filling ring 32 is compressed and deformed to fill the gap, forming the first inner plug seal. The sealing ring 33 is embedded in the annular groove at the top of the tube head 1. The compression ring 34 is located directly above the sealing ring 33 and the bottom of the compression ring 34 abuts against the top of the sealing ring 33. The outer diameter of the compression ring 34 is adapted to the inner diameter of the sealing sleeve 4 to ensure that the compression ring 34 slides smoothly along the inner wall of the sealing sleeve 4.

[0034] The sliding frame 35 has a radial structure and its outer end is fixedly connected to the top surface of the extrusion ring 34. The inner end of the sliding frame 35 converges and is fixedly connected to the outer wall of the slider 36. The outer wall of the slider 36 is slidably connected to the inner wall of the sealing sleeve 4 and is provided with an anti-rotation structure that matches the inner wall of the sealing sleeve 4 to prevent the slider 36 from rotating with the threaded shaft 37. The threaded shaft 37 is set along the central axis of the sealing sleeve 4. The top end of the threaded shaft 37 passes through the top wall of the sealing sleeve 4 and is rotatably connected to the sealing sleeve 4. An adjustment knob is provided at the end of the threaded shaft 37 located outside the sealing sleeve 4. The threaded shaft 37 and the slider 36 form a screw and nut transmission pair. By rotating the threaded shaft 37, the slider 36 is driven to drive the extrusion ring 34 to press down the sealing ring 33 to produce axial deformation, forming a second end face seal, which ensures the sealing stability of the pipe head 1 in a high-pressure fluid environment.

[0035] In a preferred embodiment, in order to ensure that the sealing sleeve 4 can be accurately and stably aligned with the insertion tube head 1 during installation, the guide slider 21 is evenly distributed along the outer wall of the tube head 1. The number and position of the guide groove 28 correspond one-to-one with the guide slider 21. The guide groove 28 extends linearly along the axial direction of the sealing sleeve 4 and penetrates to the bottom end face of the sealing sleeve 4, so that the guide slider 21 can smoothly slide into the guide groove 28 until it reaches the rotation position.

[0036] In a preferred embodiment, in order to enable the sealing sleeve 4 to rotate smoothly to the locked position after being inserted, the rotating groove 23 is horizontally opened along the inner wall of the sealing sleeve 4 and communicates with the top of all the guide grooves 28. The vertical height of the rotating groove 23 is greater than the vertical height of the guide slider 21, and the circumferential length of the rotating groove 23 can cover the rotational stroke of the guide slider 21 from the position where it slides out of the guide groove 28 to the position where the limiting groove 22 is aligned with the limiting block 24.

[0037] In a preferred embodiment, to ensure the reliability of the locking state and prevent accidental dislodgement, the limiting groove 22 is formed in the center of the top surface of the guide slider 21, the bottom shape of the limiting block 24 is adapted to the shape of the limiting groove 22, and the spring 25 is a high-stiffness compression spring 25. The spring 25 always applies a downward preload to the limiting block 24 to ensure that the limiting block 24 can withstand the vibration generated by the operation of the equipment after it is locked into the limiting groove 22 and is not easy to loosen.

[0038] As a preferred embodiment, in order to improve the adaptability of the inner plug seal to different pipe diameter tolerances, the flexible filling ring 32 is made of highly elastic rubber material. The outer diameter of the flexible filling ring 32 gradually increases from bottom to top along the conical sealing plug 31, forming a stepped or continuously changing sealing contact surface, so that when the inner diameter of the pipe head 1 fluctuates within a certain range, at least one flexible filling ring 32 can always form a tight interference fit with the inner wall of the pipe head 1.

[0039] As a preferred embodiment, in order to enhance the compression effect of the end face seal and prevent the sealing ring 33 from shifting under pressure, the sealing ring 33 at the top of the pipe head 1 adopts a rectangular cross-section sealing ring 33. A deep mounting groove is correspondingly opened at the top of the pipe head 1 to accommodate the sealing ring 33. The bottom surface of the compression ring 34 is machined with annular protrusions or rough textures that match the sealing ring 33, increasing friction and concentrating pressure, so as to ensure that the sealing ring 33 only undergoes axial compression deformation and does not undergo radial slippage during the compression ring 34 pressing down.

[0040] As a preferred embodiment, in order to facilitate the operator to manually apply sufficient torque to drive the sealing mechanism 3, the threaded shaft 37 is fixedly connected to the top of the sealing sleeve 4 with a large diameter adjustment knob. The outer edge of the adjustment knob is provided with knurled anti-slip texture. The thread between the threaded shaft 37 and the slider 36 adopts a trapezoidal thread or a rectangular thread, which has a self-locking function to prevent the compression ring 34 from being pushed up in the opposite direction under high pressure, thus causing the seal to fail.

[0041] Working principle:

[0042] When the locking device needs to be installed, the operator first aligns the guide groove 28 at the bottom of the sealing sleeve 4 with the guide slider 21 on the outer wall of the pipe head 1, and pushes the sealing sleeve 4 downward along the axial direction of the pipe head 1 until the guide slider 21 is fully inserted into the rotating groove 23. Then, the sealing sleeve 4 is rotated and the quick release ring 27 is lifted upward. The quick release ring 27 drives the limiting block 24 to move upward against the resistance of the spring 25 through the connecting rod 26. When the sealing sleeve 4 rotates to the predetermined position so that the limiting block 24 is directly above the limiting groove 22, the quick release ring 27 is released. The spring 25 releases its elastic force to drive the limiting block 24 to reset downward and lock into the limiting groove 22. The engagement of the limiting block 24 and the limiting groove 22 restricts the rotation of the sealing sleeve 4 relative to the pipe head 1, thereby achieving quick positioning and locking of the sealing sleeve 4 and the pipe head 1.

[0043] During the process of inserting the sealing sleeve 4 into the pipe head 1, the conical sealing plug 31 located inside the sealing sleeve 4 is simultaneously inserted into the inner hole of the pipe head 1. The flexible filling ring 32 on the outer wall of the conical sealing plug 31 is squeezed by the inner wall of the pipe head 1 and undergoes elastic deformation, automatically filling the tiny gap between the conical sealing plug 31 and the inner wall of the pipe head 1 to form the first seal. After the sealing sleeve 4 is locked, the operator rotates the threaded shaft 37. The threaded shaft 37 drives the slider 36 to slide down along the inner wall of the sealing sleeve 4. The slider 36 drives the sliding frame 35 and the bottom extrusion ring 34 to move down synchronously. The extrusion ring 34 applies axial pressure to the sealing ring 33 at the top of the pipe head 1, forcing the sealing ring 33 to deform and tightly fill the end face gap between the top of the pipe head 1 and the inner top of the sealing sleeve 4, forming the second high-pressure seal.

[0044] When it is necessary to disassemble the locking device, the operator first rotates the threaded shaft 37 in the opposite direction to drive the slider 36 and the compression ring 34 to move upward and reset to eliminate the clamping force on the sealing ring 33. Then, the quick-release ring 27 is lifted upward to drive the limit block 24 to move upward and disengage from the limit groove 22. While keeping the quick-release ring 27 in the lifted state, the sealing sleeve 4 is rotated in the opposite direction until the guide slider 21 is aligned with the guide groove 28 again. Finally, the sealing sleeve 4 is pulled outward along the axial direction to complete the disassembly.

Claims

1. A quick-release pipe sealing and locking device, comprising: Pipe head (1), and sealing sleeve (4) fitted over the outside of the pipe head (1); Its features are, The outer wall of the pipe head (1) is fixedly connected to a guide block (21). A limit groove (22) is opened at the top of the guide block (21). A guide groove (28) is opened at the bottom of the inner side of the sealing sleeve (4) to slide with the guide block (21). A rotating groove (23) is opened at the upper middle part of the inner side of the sealing sleeve (4) to communicate with the guide groove (28). The sealing sleeve (4) is provided with a disassembly and assembly mechanism (2). The disassembly and assembly mechanism (2) includes a limiting block (24) slidably connected to the inner wall of the rotating groove (23), a connecting rod (26) fixedly connected to the top of the limiting block (24), a spring (25) sleeved on the outer wall of the connecting rod (26), and a quick-release ring (27) fixedly connected to the top of the connecting rod (26). The connecting rod (26) passes through the top of the sealing sleeve (4).

2. The quick-release pipe sealing and locking device according to claim 1, characterized in that, The sealing sleeve (4) is also provided with a sealing mechanism (3). The sealing mechanism (3) includes a conical sealing plug (31) fixedly connected to the top of the inner side of the sealing sleeve (4), a flexible filling ring (32) fixedly connected to the outer wall of the conical sealing plug (31), a sealing ring (33) fixedly connected to the top of the tube head (1), a compression ring (34) slidably connected to the inner wall of the sealing sleeve (4), a sliding frame (35) fixedly connected to the top of the compression ring (34), a slider (36) fixedly connected to the middle of the sliding frame (35), and a threaded shaft (37) threadedly connected to the inside of the slider (36).

3. The quick-release pipe sealing and locking device according to claim 1, characterized in that, The number of guide blocks (21) is multiple and they are evenly distributed around the outer wall of the pipe head (1). The number and position of the guide grooves (28) correspond one-to-one with the guide blocks (21). The guide grooves (28) extend along the axial direction of the sealing sleeve (4) and the bottom end of the guide grooves (28) extends to the bottom edge of the sealing sleeve (4).

4. The quick-release pipe sealing and locking device according to claim 1, characterized in that, The rotating groove (23) is opened along the circumference of the sealing sleeve (4). The height of the inner wall of the rotating groove (23) is greater than the height of the guide slider (21), so that the sealing sleeve (4) can rotate relative to the tube head (1) after the guide slider (21) enters the rotating groove (23).

5. The quick-release pipe sealing and locking device according to claim 1, characterized in that, The bottom end of the spring (25) abuts against the top of the limiting block (24), the top end of the spring (25) abuts against the inner top wall of the rotating groove (23), the limiting block (24) is inserted into the limiting groove (22) under the elastic force of the spring (25), and the quick-release ring (27) is exposed above the sealing sleeve (4).

6. The quick-release pipe sealing and locking device according to claim 2, characterized in that, The conical sealing plug (31) has an inverted frustum structure. The bottom diameter of the conical sealing plug (31) is smaller than the inner diameter of the tube head (1). Multiple flexible filling rings (32) are equidistantly arranged along the axial direction of the conical sealing plug (31). The outer wall of the flexible filling ring (32) is interference-fitted with the inner wall of the tube head (1).

7. The quick-release pipe sealing and locking device according to claim 2, characterized in that, The extrusion ring (34) is located directly above the sealing ring (33), the bottom of the extrusion ring (34) abuts against the top of the sealing ring (33), the sealing ring (33) is embedded in the annular groove at the top of the tube head (1), and the outer diameter of the extrusion ring (34) is adapted to the inner diameter of the sealing sleeve (4).

8. The quick-release pipe sealing and locking device according to claim 2, characterized in that, The sliding frame (35) has a radial structure. The outer end of the sliding frame (35) is fixedly connected to the top surface of the extrusion ring (34). The inner end of the sliding frame (35) converges and is fixedly connected to the outer wall of the slider (36). The outer wall of the slider (36) is provided with an anti-rotation plane. The inner wall of the sealing sleeve (4) is provided with an anti-rotation structure.

9. The quick-release pipe sealing and locking device according to claim 2, characterized in that, The threaded shaft (37) is arranged along the central axis of the sealing sleeve (4). The top end of the threaded shaft (37) passes through the top wall of the sealing sleeve (4) and is rotatably connected to the sealing sleeve (4). An adjustment knob is provided at one end of the threaded shaft (37) located outside the sealing sleeve (4). The threaded shaft (37) and the slider (36) form a screw-nut transmission pair.

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