Clamping type plastic sealing ring

Abstract

The utility model discloses a clamping type plastic sealing ring, and relates to the field of sealing rings, the clamping type plastic sealing ring comprises a sealing ring body used for connecting two pipelines, and the sealing ring body comprises a mounting assembly which is mounted on the side face of a first sealing piece and the side face of a second sealing piece and used for fixedly connecting the first sealing piece and the second sealing piece; a plurality of first clamping assemblies are arranged on the inner surfaces of the first sealing part and the second sealing part correspondingly, a first mounting ring and a second mounting ring are fixedly connected to the inner rings of the bottoms of the first sealing part and the second sealing part correspondingly, and second clamping assemblies are arranged on the surfaces of the first mounting ring and the second mounting ring correspondingly; and the mounting assembly comprises a clamping assembly III which is arranged in the mounting block and is used for clamping the mounting block in the mounting groove. In conclusion, when the pipeline joint needs to be dismantled, overhauled or replaced, the first sealing piece and the second sealing piece are dismantled through the arranged installation assembly, the first sealing piece and the second sealing piece are dismantled from the pipeline through the arranged first clamping assembly and the arranged second clamping assembly, and operation is easy, convenient and fast.

Description

Technical Field

[0001] This application relates to the field of sealing rings, and more particularly to a snap-fit ​​type plastic sealing ring. Background Technology

[0002] PVDF (polyvinylidene fluoride) sealing rings are widely used in various fields due to their excellent chemical resistance, abrasion resistance, high temperature resistance, and low permeability, including sealing requirements in equipment used for handling and transporting corrosive chemicals. In piping systems, PVDF sealing rings effectively provide a seal, preventing media leakage and ensuring the normal operation of the piping system.

[0003] For example, patent CN216201349U discloses an anti-slip sealing ring for pipe connections, but it still has the following shortcomings in practical use:

[0004] However, while it is relatively easy to install tubular socket fittings, it is more difficult to pull them out. Consequently, when it is necessary to dismantle, repair, or replace the pipe connection, it is not easy to remove them, and the operation process is relatively cumbersome. Therefore, it has certain limitations. Utility Model Content

[0005] To address the issue of the sealing ring being difficult to remove during maintenance, this application provides a snap-fit ​​type plastic sealing ring.

[0006] The snap-fit ​​type plastic sealing ring provided in this application adopts the following technical solution:

[0007] A snap-fit ​​type plastic sealing ring includes a sealing ring for connecting two pipes. The sealing ring includes mounting components installed on the sides of a first sealing element and a second sealing element for fixing the first sealing element and the second sealing element. The inner surfaces of the first sealing element and the second sealing element are provided with a plurality of snap-fit ​​components. The bottom inner rings of the first sealing element and the second sealing element are respectively fixed with a mounting ring and a mounting ring. The surfaces of the mounting ring and the mounting ring are provided with snap-fit ​​components.

[0008] The installation assembly includes a third snap-fit ​​component disposed within the installation block for snapping the installation block into the installation groove. The third snap-fit ​​component includes a right-angled triangular snap-fit ​​block located within a sliding groove and capable of lateral sliding. The inner side of the installation groove is provided with a first snap-fit ​​groove adapted to the shape of the right-angled triangular snap-fit ​​block.

[0009] The snap-fit ​​assembly includes a sliding column located in the sliding groove three and capable of horizontal sliding. A hemisphere is fixedly installed on the inner side of the sliding column. A spring piece one, which is fixed on the other side of the inner cavity of the sliding groove three, is fixedly installed on the side. A snap-fit ​​groove two that matches the shape of the hemisphere is opened on the surface of the pipe.

[0010] The second snap-fit ​​assembly includes a threaded post that is threaded onto the surfaces of the first and second mounting rings for tightening the bifurcated elastic mandrel.

[0011] By adopting the above technical solution, seal 1 and seal 2 can be easily spliced ​​to form a sealing ring. At the same time, snap-fit ​​assembly 1, mounting ring 1, mounting ring 2 and snap-fit ​​assembly are set to increase the firmness of the installation, and the installation and disassembly are convenient and quick.

[0012] Preferably, one of the mounting blocks is fixedly installed on the top of one side end face of the seal, and the other mounting block is fixedly installed on the bottom of the other side end face of the seal. One of the mounting grooves is opened on the bottom side of the seal, and the other mounting groove is opened on the top side of the seal. The two mounting blocks are located in the corresponding mounting grooves. The right-angled triangular locking block is provided on one side of the mounting block, and a spring is fixedly connected to the side of the right-angled triangular locking block, with the other end fixed to the side of the inner cavity of the slide groove.

[0013] By adopting the above technical solution, when the mounting block is installed in the mounting groove, the right-angled triangular locking block engages in the first locking groove, thereby fixing the mounting block in the mounting groove and fixing the first mounting ring and the second mounting ring together to form a complete sealing ring, making the installation simpler.

[0014] Preferably, the right-angled triangular block has an L-shaped lever whose top end moves through the side wall of the mounting block, and the mounting block has a groove inside that matches the shape of the L-shaped lever.

[0015] By adopting the above technical solution, when it is necessary to separate seal one and seal two, the L-shaped lever is turned, and the lever drives the right-angled triangular block to slide out of the slot one, thereby allowing the mounting block to be pulled out of the mounting slot, and thus separating mounting ring one and mounting ring two. The separation is simple and convenient.

[0016] Preferably, the surfaces of the first seal and the second seal are provided with a cavity, a mounting plate is fixedly connected to the inner side of the cavity, a ring is fixedly connected to the outer side of the mounting plate, the bifurcated elastic mandrel is fixedly installed on the outer ring of the side of the ring, a conical block is fixedly connected to the outer side of each bifurcated piece of the bifurcated elastic mandrel, and an inner conical groove adapted to the shape of the conical block is provided on the inner side of the threaded column.

[0017] By adopting the above technical solution, rotating the threaded column causes it to continuously move towards cavity one due to the thread. The inner conical groove and the outer side of each forked segment of the bifurcated elastic mandrel are fixed with conical blocks. As the threaded column moves continuously, it squeezes the conical blocks on the outer side of each forked segment, thereby tightening the bifurcated elastic mandrel. When the threaded column is tightened, the bifurcated elastic mandrel is tightened until its inner surface abuts against the surface of the insert rod. The insert rod is clamped and fixed by the bifurcated elastic mandrel, thereby fixing the first and second mounting rings to the pipeline, increasing the firmness of the sealing ring installation.

[0018] Preferably, the surfaces of mounting ring one and mounting ring two are provided with threaded grooves that are adapted to the shape of the threaded column, and the threaded grooves correspond to cavity one.

[0019] By adopting the above technical solution and setting threads and thread grooves, the threaded column can continuously move towards the cavity when rotating.

[0020] Preferably, a through hole communicating with the inner conical groove is provided through the center of the outer side of the threaded column, and an insert rod is slidably installed in the through hole.

[0021] By adopting the above technical solution, through opening a through hole, a plug rod can be inserted, and then the first and second mounting rings can be fixedly connected to the pipeline by the plug rod.

[0022] Preferably, the inner end of the insertion rod passes through the first perforation, the bifurcated elastic mandrel, and the ring in sequence, and then moves through the side wall of the mounting plate and extends into the inner wall of the pipe.

[0023] By adopting the above technical solution, one end of the insertion rod is inserted into the inner wall of the pipe, connecting the pipe with the first and second installation rings, increasing the stability of the installation, and making installation and disassembly convenient and quick.

[0024] Preferably, the inner wall of the annulus abuts against the surface of the insertion rod.

[0025] By adopting the above technical solution, when the insertion rod passes through the ring, it avoids the occurrence of play, and avoids shaking or loosening caused by play.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By dividing the sealing ring into two halves, sealing part one and sealing part two, which are fixedly installed on the pipe respectively, and then spliced ​​together by the installation component, the installation difficulty is reduced, and the sealing ring is easier to disassemble and reinstall when the pipe needs maintenance.

[0028] 2. By utilizing the fixing effect of snap-fit ​​component one and snap-fit ​​component two, the connection between the sealing ring and the pipeline is more secure, which helps to reduce system failures and safety hazards caused by loosening or falling off of the sealing ring, thereby improving the reliability and safety of the overall pipeline system. At the same time, the sealing ring is simple and convenient to disassemble. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of this application;

[0030] Figure 2 This is a structural exploded view of this application;

[0031] Figure 3This is a schematic diagram of the installation component structure of this application;

[0032] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0033] Figure 5 This is a schematic diagram of the structure of the first and second card-connecting components of this application;

[0034] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point B;

[0035] Figure 7 This is a schematic diagram of the overall structure of the snap-fit ​​assembly when the bifurcated elastic spindle of the present application is open;

[0036] Figure 8 This is a schematic diagram of the overall structure of the snap-fit ​​assembly with the two-pronged elastic spindle tightened in this application.

[0037] Figure 9 This is a schematic diagram of the overall structure of the snap-fit ​​assembly when the two insert rods are not inserted.

[0038] Attached reference numerals: 1. Pipe; 2. Seal 1; 3. Seal 2;

[0039] 4. Mounting components; 41. Mounting block; 42. Mounting slot; 43. Snap-fit ​​component three; 431. Right-angled triangular snap-fit ​​block; 432. Slide one; 433. Spring one; 434. Slot one; 435. L-shaped lever; 436. Slide two; 437. Groove;

[0040] 5. Snap-fit ​​component one; 51. Hemisphere; 52. Sliding column; 53. Spring piece one; 54. Slide groove three; 55. Snap-fit ​​groove two;

[0041] 6. Install ring two; 7. Install ring one;

[0042] 8. Snap-fit ​​assembly two; 81. Cavity one; 82. Mounting plate; 83. Threaded groove; 84. Ring; 85. Forked elastic mandrel; 86. Conical block; 87. Threaded post; 88. Inner conical groove; 89. Insert rod; 810. Through hole one; 811. Through hole two; 812. Insertion hole. Detailed Implementation

[0043] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0044] This application discloses a snap-fit ​​type plastic sealing ring.

[0045] Reference Figures 1-4A snap-fit ​​plastic sealing ring includes a sealing ring for connecting two pipes 1. The sealing ring includes an installation component 4 installed on the sides of a first sealing element 2 and a second sealing element 3 to fix the first sealing element 2 and the second sealing element 3. The installation component 4 includes a snap-fit ​​component 3 43 disposed in an installation block 41 for snapping the installation block 41 into an installation groove 42. The snap-fit ​​component 3 43 includes a right-angled triangular snap block 431 located in a sliding groove 432 and enabling lateral sliding. There are two installation blocks 41. One installation block 41 is fixedly installed on the top of one side of the cross-section of the first sealing element 2, and the other installation block 41 is fixedly installed on the bottom of one side of the cross-section of the second sealing element 3. The two installation blocks 41 are arranged symmetrically and alternately. One installation groove 42 is opened on the top side of the first sealing element 2 away from the installation block 41, and the other installation groove 42 is opened on the bottom side of the second sealing element 3 away from the installation block 41.

[0046] The slide groove 432 is shaped to match the right-angled triangular block 431 and is located at the center of one side of the mounting block 41. A spring 433 is fixedly connected to the center of the side of the right-angled triangular block 431. The end of the spring 433 away from the right-angled triangular block 431 is fixedly connected to the center of the inner cavity of the slide groove 432 on the side away from the right-angled triangular block 431. A slot 434, shaped to match the right-angled triangular block 431, is located at the center of the inner cavity of the mounting groove 42 on the side near the right-angled triangular block 431. The right-angled triangular block 431... An L-shaped lever 435 is fixedly connected to the center of one side of the spring 433. The end of the L-shaped lever 435 away from the right-angled triangular block 431 moves through the side wall of the mounting block 41 and extends to the outside. The top of the L-shaped lever 435 is flush with the top of the mounting block 41. A second groove 436 that matches the shape of the L-shaped lever 435 is opened inside the mounting block 41. The second groove 436 is connected to the first groove 432. The L-shaped lever 435 is located in the second groove 436 and can slide laterally. A groove 437 is opened on the top of the L-shaped lever 435.

[0047] Sealing element 1 (2) and sealing element 2 (3) are placed on the left and right sides of the connection between the two pipes 1, respectively, so that sealing element 1 (2) and sealing element 2 (3) are close to each other. The mounting block 41 on sealing element 1 (2) is inserted into the mounting groove 42 opened on sealing element 2 (3), and the mounting block 41 on sealing element 2 (3) is inserted into the mounting groove 42 opened on sealing element 1 (2). During the process of the mounting block 41 being inserted into the mounting groove 42, the inclined surface of the right-angled triangular locking block 431 is subjected to force, and the right-angled triangular locking block 431 will be subjected to force towards the sliding groove 1. The force applied in the 432 direction causes the right-angled triangular block 431 to slide into the first groove 432, which in turn compresses the first spring 433. When the mounting block 41 is fully inserted into the mounting groove 42, the right-angled triangular block 431 is positioned exactly in the corresponding groove 434. Under the action of the first spring 433, the right-angled triangular block 431 rebounds and engages in the groove 434, thus adhering the inner walls of the first seal 2 and the second seal 3 to the outer wall of the pipe 1, thereby forming a sealing ring and reducing the difficulty of installation.

[0048] When it is necessary to disassemble seal 2 and seal 3, place your fingertip in the groove 437 and then move the L-shaped lever 435. The L-shaped lever 435 slides in the slide groove 436, which in turn drives the right-angled triangular locking block 431 fixed to it to slide out of the locking groove 434 and slide into the slide groove 432. At this time, the mounting block 41 will no longer be locked in the mounting groove 42, and the mounting block 41 can be pulled out from the mounting groove 42, thereby removing seal 2 and seal 3. When the pipeline 1 needs maintenance, the sealing ring is easier to disassemble and reinstall.

[0049] Reference Figure 5 , Figure 6 Several snap-fit ​​components 5 are arranged in a ring array on the inner surfaces of the sealing element 2 and the sealing element 3. Each snap-fit ​​component 5 includes a sliding column 52 located in the sliding groove 3 54 and capable of horizontal sliding. The sliding groove 3 54 is adapted to the shape of the sliding column 52. A hemisphere 51 is fixedly installed at the end of the sliding column 52 near the pipe 1. A spring piece 53 is fixedly installed in the center of the inner cavity of the sliding groove 3 54 away from the sliding column 52. The side of the spring piece 53 near the sliding column 52 is fixedly connected to the end of the sliding column 52 away from the hemisphere 51. A snap-fit ​​groove 2 55 adapted to the shape of the hemisphere 51 is opened on the surface of the pipe 1.

[0050] When installing seal 12 and seal 23, seal 12 can be placed at the connection of pipe 1 first. During the installation process, hemisphere 51 needs to be snapped into slot 255. When several hemispheres 51 are not aligned with the corresponding slot 255, the inner surface of seal 12 is pressed against the surface of pipe 1. At this time, hemisphere 51 is slid into slot 354 under force and compresses spring 153. As several hemispheres 51 rotate to the position of the corresponding slots 255, hemisphere 51 rebounds and snaps into slot 255 under the action of spring 153. Then, seal 23 is fixed to seal 12 through installation component 4. The inner walls of seal 12 and seal 23 are attached to the outer wall of pipe 1. With the fixing effect of snap-fit ​​component 15, the connection between the sealing ring and pipe 1 is more stable, which helps to reduce system failures and safety hazards caused by loosening or falling off of the sealing ring, thereby improving the reliability and safety of the overall pipe 1 system.

[0051] Reference Figures 7-9 Mounting ring 7 and mounting ring 6 are fixedly installed on the bottom inner rings of sealing element 2 and sealing element 3. Snap-fit ​​assembly 2 8 is disposed on mounting ring 7, mounting ring 6, and pipe 1. Snap-fit ​​assembly 2 8 includes a threaded post 87 threadedly connected to the surfaces of mounting ring 7 and mounting ring 6 for tightening the bifurcated elastic mandrel 85. A threaded groove 83, matching the shape of the threaded post 87, is formed through the middle of the surfaces of mounting ring 7 and mounting ring 6. The threaded post 87 is threadedly connected within the threaded groove 83. The surface of pipe 1 corresponds to the threaded groove 83. A cavity 81 is provided at the position. A mounting plate 82 is fixedly installed in the center of the inner cavity of the cavity 81 on the side away from the threaded post 87. A ring 84 is fixedly installed in the center of the outer side of the mounting plate 82. A forked elastic spindle 85 is fixedly installed on the outer circumference of the ring 84 near the threaded post 87. The forked elastic spindle 85 is composed of several pieces. Several conical blocks 86 are fixedly installed on the ends of the pieces away from the ring 84. An inner conical groove 88 that matches the shape of the conical blocks 86 is provided in the center of the side of the threaded post 87 near the conical blocks 86.

[0052] The mounting plate 82 has a through hole 811 in the center of its side, which is adapted to the shape of the insertion rod 89. The cavity 81 has an insertion hole 812 in the center of its inner side, which is adapted to the shape of the insertion rod 89. The threaded post 87 has a through hole 810 in the center of its outer end, which is adapted to the shape of the insertion rod 89.

[0053] When the sealing element 12 and the sealing element 23 are fixedly sleeved at the connection of the pipe 1, the inner walls of the sealing element 12 and the sealing element 23 are attached to the outer wall of the pipe 1. At the same time, the inner walls of the mounting ring 17 and the mounting ring 26 are also attached to the outer wall of the pipe 1, and the threaded post 87 corresponds to the cavity 181. Then, the inner end of the insertion rod 89 is inserted into the insertion hole 1812 after passing through the through hole 1810, the bifurcated elastic mandrel 85, the ring 84 and the through hole 2811 in sequence.

[0054] Then, rotate the threaded column 87 clockwise. As the threaded column 87 rotates, it will continuously move into the cavity 81. As the threaded column 87 moves, the conical surface of the inner conical groove 88 at the inner end of the threaded column 87 abuts against the surface of several conical blocks 86. As the threaded column 87 moves inward, the inner conical groove 88 will apply a force to the surface of several conical blocks 86. Under the action of the force, the bifurcated elastic mandrel 85 will continuously tighten until the threaded column 87 is screwed to the maximum extent. At this point, the inner wall of the bifurcated elastic mandrel 85 will abut against the surface of the insertion rod 89, thereby clamping and fixing the insertion rod 89 in the insertion hole 812. This will further fix the mounting ring 7 and the mounting ring 6 to the surface of the pipe 1, making the connection between the sealing ring and the pipe 1 more stable.

[0055] When disassembly is required, rotate the threaded column 87 counterclockwise. The threaded column 87 moves away from the cavity 81, and the force on the conical blocks 86 gradually disappears. Then, the bifurcated elastic spindle 85 springs back to its original state. The inner wall of the bifurcated elastic spindle 85 no longer abuts against the surface of the insertion rod 89. Then, the insertion rod 89 can be pulled out from the insertion hole 812. Then, the mounting ring 7 and the mounting ring 6 are no longer fixed to the pipe 1. Disassembly is simple and convenient.

[0056] The implementation principle of a snap-fit ​​plastic sealing ring according to an embodiment of this application is as follows: A sealing element 2 is placed at the connection of pipe 1, with its inner surface pressed tightly against the surface of pipe 1. Then, the sealing element 2 is rotated. When several hemispheres 51 rotate to positions corresponding to several slots 55, the hemispheres 51 spring back and snap into the slots 55 under the action of a spring plate 53. Next, the sealing element 3 is placed on the other side of the connection of pipe 1, bringing the sealing element 2 and sealing element 3 closer together. The mounting block 41 on the sealing element 2 is inserted into the mounting groove 42 on the sealing element 3. When the mounting block 41 is fully inserted into the mounting groove 42, the right-angled triangular locking block 431 is positioned exactly at the position corresponding to slot 434. Under the action of a spring 433, the right-angled triangular locking block 431 springs back and snaps into slot 434, thus adhering the inner walls of the sealing element 2 and sealing element 3 to the outer wall of pipe 1.

[0057] Simultaneously, the inner walls of mounting ring 7 and mounting ring 6 are also attached to the outer wall of pipe 1, and the threaded post 87 corresponds to cavity 81. Then, the inner end of the insertion rod 89 is inserted into the insertion hole 812 after passing through the through hole 810, the bifurcated elastic mandrel 85, the ring 84, and the through hole 811 in sequence. Then, the threaded post 87 is rotated clockwise, and the threaded post 87 moves continuously into cavity 81. The conical surface of the inner conical groove 88 opened at the inner end of the threaded post 87 abuts against the surface of several conical blocks 86. As the threaded post 87 moves inward, the inner conical groove 88 applies a force to the surface of several conical blocks 86. Under the action of the force, the bifurcated elastic mandrel 85 will tighten continuously until the threaded post 87 is screwed to the maximum extent. At this point, the inner wall of the bifurcated elastic mandrel 85 will abut against the surface of the insertion rod 89, thereby clamping and fixing the insertion rod 89 in the insertion hole 812. This will further fix the mounting ring 7 and the mounting ring 6 to the surface of the pipe 1, making the connection between the sealing ring and the pipe 1 more stable.

[0058] When disassembly is required, rotate the threaded column 87 counterclockwise. The threaded column 87 moves away from the cavity 81, and the force on the conical blocks 86 gradually disappears. The bifurcated elastic spindle 85 then springs back to its original state. The inner wall of the bifurcated elastic spindle 85 no longer abuts against the surface of the insertion rod 89, and the insertion rod 89 can be pulled out from the insertion hole 812. Then, place your fingertip in the groove 437 and move the L-shaped lever 435. The L-shaped lever 435 slides in the sliding groove 436, which drives the right-angled triangular locking block 431 fixed to it to slide out from the locking groove 434 and slide into the sliding groove 432. At this time, the mounting block 41 will no longer be locked in the mounting groove 42, and the mounting block 41 can be pulled out from the mounting groove 42, thereby removing the seal 2 and the seal 3.

[0059] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A snap-fit ​​type plastic sealing ring, comprising a sealing ring for connecting two pipes (1), characterized in that: The sealing ring includes an installation component (4) installed on the side of the sealing component 1 (2) and the sealing component 2 (3) for fixing the sealing component 1 (2) and the sealing component 2 (3). The inner surfaces of the sealing component 1 (2) and the sealing component 2 (3) are provided with a plurality of snap-fit ​​components 1 (5). The bottom inner rings of the sealing component 1 (2) and the sealing component 2 (3) are respectively fixed with a mounting ring 1 (7) and a mounting ring 2 (6). The surfaces of the mounting ring 1 (7) and the mounting ring 2 (6) are provided with snap-fit ​​components 2 (8). The mounting component (4) includes a snap-fit ​​component three (43) disposed in the mounting block (41) for snapping the mounting block (41) into the mounting groove (42). The snap-fit ​​component three (43) includes a right-angled triangular snap-fit ​​block (431) located in the sliding groove (432) and enabling lateral sliding. The inner cavity side of the mounting groove (42) is provided with a snap-fit ​​groove (434) that matches the shape of the right-angled triangular snap-fit ​​block (431). The snap-fit ​​assembly 1 (5) includes a sliding column (52) located in the sliding groove 3 (54) and capable of horizontal sliding. A hemisphere (51) is fixedly installed on the inner side of the sliding column (52). A spring piece 1 (53) fixed on the other side of the inner cavity of the sliding groove 3 (54) is fixedly installed on the side. A snap-fit ​​groove 2 (55) adapted to the shape of the hemisphere (51) is opened on the surface of the pipe (1). The second snap-fit ​​assembly (8) includes a threaded post (87) threadedly connected to the surfaces of the first mounting ring (7) and the second mounting ring (6) for tightening the bifurcated elastic mandrel (85).

2. The snap-fit ​​type plastic sealing ring according to claim 1, characterized in that: One of the mounting blocks (41) is fixedly installed on the top of one side end face of the sealing element (2), and the other mounting block (41) is fixedly installed on the bottom of the other side end face of the sealing element (3). One of the mounting grooves (42) is opened on the bottom side of the sealing element (2), and the other mounting groove (42) is opened on the top side of the sealing element (3). The two mounting blocks (41) are located in the corresponding mounting grooves (42). The right-angled triangular locking block (431) is provided on one side of the mounting block (41). The right-angled triangular locking block (431) has a spring (433) with the other end fixed to the side of the inner cavity of the slide groove (432).

3. The snap-fit ​​type plastic sealing ring according to claim 2, characterized in that: The right-angled triangular card block (431) has an L-shaped lever (435) whose top end moves through the side wall of the mounting block (41) and is fixed to the side. The mounting block (41) has a sliding groove (436) inside that matches the shape of the L-shaped lever (435).

4. The snap-fit ​​type plastic sealing ring according to claim 1, characterized in that: The surfaces of the first seal (2) and the second seal (3) are provided with a cavity (81). A mounting plate (82) is fixedly connected to the inner side of the cavity (81). A ring (84) is fixedly connected to the outer side of the mounting plate (82). The bifurcated elastic mandrel (85) is fixedly installed on the outer ring of the side of the ring (84). A conical block (86) is fixedly connected to the outer side of each bifurcated piece of the bifurcated elastic mandrel (85). An inner conical groove (88) that matches the shape of the conical block (86) is provided on the inner side of the threaded column (87).

5. A snap-fit ​​type plastic sealing ring according to claim 4, characterized in that: The surfaces of mounting ring one (7) and mounting ring two (6) are provided with threaded grooves (83) that are adapted to the shape of the threaded post (87), and the threaded grooves (83) correspond to the cavity one (81).

6. A snap-fit ​​plastic sealing ring according to claim 5, characterized in that: The threaded post (87) has a through hole (810) at the center of its outer side, which communicates with the inner conical groove (88). A plug rod (89) is slidably installed in the through hole (810).

7. A snap-fit ​​type plastic sealing ring according to claim 6, characterized in that: The inner end of the insertion rod (89) passes through the first perforation (810), the bifurcated elastic mandrel (85) and the ring (84) in sequence, and then moves through the side wall of the mounting plate (82) and extends into the inner wall of the pipe (1).

8. A snap-fit ​​type plastic sealing ring according to claim 7, characterized in that: The inner circumference of the ring (84) abuts against the surface of the insert (89).

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