Joint sealing structure of pressure-bearing plastic pipe
By using the sealing structure of components such as polytetrafluoroethylene pipe, stop-retard nut, stop-retard ring, O-type sealing ring and other components at the plastic pipe joint, the problem of poor sealing performance of the pipe joint is solved, and efficient sealing effect and long life are achieved.
Patent Information
- Application Number
- CN202422314036.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-23
AI Technical Summary
In the prior art, the sealing performance of metal pipes and plastic pipes at the joints is poor or fails, resulting in media leakage, causing casualties, property losses and environmental pollution.
A joint sealing structure of a pressure-bearing plastic pipe is adopted, including polytetrafluoroethylene pipe, a stop-retreat nut, a stop-retreatment ring, an O-ring, an access body, an inlay body and a sealing nut. Through the combination of these components, a sealing structure is formed to ensure the sealing effect at the pipe joint.
It achieves a good sealing effect of plastic pipe joints, avoids media leakage, extends service life, and simplifies the operation process.
Smart Images
Figure CN223035879U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipeline joint sealing, and particularly relates to a joint sealing structure for a pressure-bearing plastic pipe. Background Art
[0002] In chemical industry experiments, some reactions need to be carried out in a reactor at a certain temperature and pressure, and the reaction medium and the generated medium are corrosive. The pipelines of the reactor are selected from metal materials such as 316L stainless steel and Hastelloy according to different media, and plastic materials such as polytetrafluoroethylene pipes. Whether it is a metal pipeline or a plastic pipeline, the sealing performance needs to be ensured at the joint. Poor sealing or failure may lead to medium leakage, resulting in problems such as casualties, property losses, and environmental pollution.
[0003] The problems existing in the prior art are that whether it is a metal pipeline or a plastic pipeline, the sealing performance needs to be ensured at the joint. Poor sealing or failure may lead to medium leakage, resulting in problems such as casualties, property losses, and environmental pollution. Summary of the Utility Model
[0004] Aiming at the problems existing in the prior art, the utility model provides a joint sealing structure for a pressure-bearing plastic pipe, which has the advantages of plug-and-play of plastic pipes, no need for additional treatment of plastic pipe orifices, good and stable sealing effect, no operation requirements, and long service life, and solves the problems that whether it is a metal pipeline or a plastic pipeline, the sealing performance needs to be ensured at the joint, and poor sealing or failure may lead to medium leakage, resulting in casualties, property losses, and environmental pollution.
[0005] The utility model is realized as follows: A joint sealing structure for a pressure-bearing plastic pipe includes a polytetrafluoroethylene pipe, a check nut, a check ring, an O-ring, an access body, an inlay body, and a sealing nut. First placement grooves are respectively formed on the left and right sides of the inlay body, and O-rings are arranged inside the first placement grooves. A second placement groove is formed on the right side of the sealing nut, and the inlay body is arranged inside the second placement groove and is in close contact with the inner wall of the second placement groove. The sealing nut is threadedly connected with the access body. The polytetrafluoroethylene pipe is inserted into the sealing nut. The O-ring seals between the polytetrafluoroethylene pipe and the inlay body. A check nut is sleeved on the surface of the polytetrafluoroethylene pipe, and the check nut is threadedly connected with the access body. A check ring is sleeved on the surface of the polytetrafluoroethylene pipe, and the check ring is arranged between the check nut and the sealing nut.
[0006] Preferably, the O-ring seals between the access body and the inlay body. By arranging the O-ring, the access body and the inlay body can be sealed, thereby improving the sealing performance of the polytetrafluoroethylene pipe.
[0007] Preferably, a slot is formed on the surface of the sealing nut. By providing the slot, the sealing nut can be assembled with the anti-loosening nut, thereby improving the stability after installation.
[0008] Preferably, a cavity is formed inside the anti-loosening nut, and a clamping structure is arranged inside the cavity. By providing the clamping structure, the anti-loosening nut can be clamped with the sealing nut to complete the installation.
[0009] Preferably, the clamping structure includes a clamping post, a connecting block, a connecting column, a connecting rod, a transmission block, a transmission post, a vertical post, a first tension spring and a pressing block. The connecting block is fixedly connected to the top of the clamping post, and the bottom of the clamping post penetrates through the surface of the anti-loosening nut and extends into the slot on the surface of the sealing nut. The connecting column is fixedly connected to the front side of the connecting block. The connecting rod is rotatably connected to the middle inside the cavity through a rotating shaft, and the side of the connecting rod close to the connecting column is sleeved on the surface of the connecting column. The transmission block is arranged at the rear side of the connecting rod and at the other end of the connecting rod. The transmission post is fixedly connected to the front side of the transmission block and penetrates through the surface of the connecting rod. The vertical post is fixedly connected to the top of the transmission block. The first tension spring is sleeved on the surface of the vertical post, and both ends are fixedly connected to the surface of the transmission block and the inner wall of the cavity respectively. The pressing block is fixedly connected to the top of the vertical post, and the top of the pressing block penetrates through and extends out of the surface of the anti-loosening nut. By providing the clamping structure, the sealing nut can be installed through the clamping structure when the anti-loosening nut is installed to complete the installation.
[0010] Preferably, extension blocks are fixedly connected to both the left and right sides of the connecting block. A guide rod is fixedly connected to the bottom of the inner wall of the cavity, and the top of the guide rod penetrates through and extends out of the surface of the extension block. A second tension spring is sleeved on the surface of the guide rod, and both ends are fixedly connected to the surface of the extension block and the inner wall of the cavity respectively. By providing the extension blocks, the guide rod and the second tension spring, the movement of the extension blocks can be guided by the guide rod, then the second tension spring can be stretched when the extension blocks move, and then the extension blocks can be driven to move in the opposite direction by the return pull of the second tension spring.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0012] 1. By the combined use of the polytetrafluoroethylene pipe, the anti-loosening nut, the anti-loosening snap ring, the O-ring, the access body, the embedded body, the sealing nut, the first placement groove, the second placement groove, the slot, the cavity, the clamping structure, the extension block, the guide rod and the second tension spring, the present utility model solves the problem that whether it is a metal pipe or a plastic pipe, the sealing performance needs to be ensured at the joint. Poor sealing or failure may lead to medium leakage, resulting in casualties, property losses and environmental pollution.
[0013] 2. By providing an extension block, a guide rod and a second tension spring, the utility model can guide the movement of the extension block through the guide rod, then stretch the second tension spring when the extension block moves, and then drive the extension block to move in the reverse direction through the return pull of the second tension spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the joint sealing structure provided by the embodiment of the utility model;
[0015] Figure 2 is a schematic diagram of the internal structure of the anti-loosening nut provided by the embodiment of the utility model;
[0016] Figure 3 is a schematic diagram of the structure of the sealing nut provided by the embodiment of the utility model.
[0017] In the figure: 1, polytetrafluoroethylene tube; 2, anti-loosening nut; 3, anti-loosening snap ring; 4, O-ring; 5, access body; 6, embedded body; 7, sealing nut; 8, first placement groove; 9, second placement groove; 10, slot; 11, cavity; 12, clamping structure; 1201, clamping post; 1202, connecting block; 1203, connecting post; 1204, connecting rod; 1205, transmission block; 1206, transmission post; 1207, vertical post; 1208, first tension spring; 1209, pressing block; 13, extension block; 14, guide rod; 15, second tension spring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] In order to further understand the inventive content, features and effects of the present utility model, the following embodiments are cited and described in detail in conjunction with the accompanying drawings.
[0019] The structure of the present utility model will be described in detail below in conjunction with the accompanying drawings.
[0020] Such as Figures 1 to 3As shown in the figure, a joint sealing structure of a pressure-bearing plastic pipe provided by an embodiment of the present utility model includes a polytetrafluoroethylene pipe 1, a check nut 2, a check ring 3, an O-ring 4, an access body 5, an inlaid body 6, and a sealing nut 7. First placement grooves 8 are provided on both the left and right sides of the inlaid body 6. The O-ring 4 is arranged inside the first placement groove 8. A second placement groove 9 is provided on the right side of the sealing nut 7. The inlaid body 6 is arranged inside the second placement groove 9, and the inlaid body 6 is in close contact with the inner wall of the second placement groove 9. The sealing nut 7 is threadedly connected to the access body 5. The polytetrafluoroethylene pipe 1 is inserted into the sealing nut 7. The O-ring 4 forms a seal between the polytetrafluoroethylene pipe 1 and the inlaid body 6. A check nut 2 is sleeved on the surface of the polytetrafluoroethylene pipe 1. The check nut 2 is threadedly connected to the access body 5. A check ring 3 is sleeved on the surface of the polytetrafluoroethylene pipe 1, and the check ring 3 is arranged between the check nut 2 and the sealing nut 7.
[0021] Reference Figure 1 , the O-ring 4 forms a seal between the access body 5 and the inlaid body 6.
[0022] With the above solution: By arranging the O-ring 4, the access body 5 and the inlaid body 6 can be sealed, thereby improving the sealing performance of the polytetrafluoroethylene pipe 1.
[0023] Reference Figure 3 , a slot 10 is provided on the surface of the sealing nut 7.
[0024] With the above solution: By providing the slot 10, the sealing nut 7 and the check nut 2 can be assembled, thereby improving the stability after installation.
[0025] Reference Figure 2 , a cavity 11 is provided inside the check nut 2, and a clamping structure 12 is arranged inside the cavity 11.
[0026] With the above solution: By arranging the clamping structure 12, the check nut 2 and the sealing nut 7 can be clamped, thereby completing its installation.
[0027] Reference Figure 2 and Figure 3, the clamping structure 12 includes a clamping post 1201, a connecting block 1202, a connecting post 1203, a connecting rod 1204, a transmission block 1205, a transmission post 1206, a vertical post 1207, a first tension spring 1208 and a pressing block 1209. The connecting block 1202 is fixedly connected to the top of the clamping post 1201, and the bottom of the clamping post 1201 penetrates through the surface of the anti-loosening nut 2 and extends into the slot 10 on the surface of the sealing nut 7. The connecting post 1203 is fixedly connected to the front side of the connecting block 1202. The connecting rod 1204 is rotatably connected to the middle part inside the cavity 11 through a rotating shaft, and one side of the connecting rod 1204 close to the connecting post 1203 is sleeved on the surface of the connecting post 1203. The transmission block 1205 is arranged at the rear side of the connecting rod 1204 and is located at the other end of the connecting rod 1204. The transmission post 1206 is fixedly connected to the front side of the transmission block 1205 and penetrates through the surface of the connecting rod 1204. The vertical post 1207 is fixedly connected to the top of the transmission block 1205. The first tension spring 1208 is sleeved on the surface of the vertical post 1207, and both ends are fixedly connected to the surface of the transmission block 1205 and the inner wall of the cavity 11 respectively. The pressing block 1209 is fixedly connected to the top of the vertical post 1207, and the top of the pressing block 1209 penetrates through and extends out of the surface of the anti-loosening nut 2.
[0028] With the above solution: By setting the clamping structure 12, the sealing nut 7 can be installed through the clamping structure 12 when the anti-loosening nut 2 is installed, so as to complete its installation.
[0029] Reference Figure 2 , extension blocks 13 are fixedly connected to both the left and right sides of the connecting block 1202. A guide rod 14 is fixedly connected to the bottom of the inner wall of the cavity 11, and the top of the guide rod 14 penetrates through and extends out of the surface of the extension block 13. A second tension spring 15 is sleeved on the surface of the guide rod 14, and both ends of the second tension spring 15 are fixedly connected to the surface of the extension block 13 and the inner wall of the cavity 11 respectively.
[0030] With the above solution: By setting the extension blocks 13, the guide rod 14 and the second tension spring 15, the movement of the extension blocks 13 can be guided through the guide rod 14, and then the second tension spring 15 can be stretched when the extension blocks 13 move, and then the extension blocks 13 can be driven to move in the opposite direction by the pulling back of the second tension spring 15.
[0031] The working principle of the present utility model:
[0032] In use, first install the O-ring 4 into the first placement groove 8 of the inlay 6, then assemble the inlay 6 with the sealing nut 7, and then thread-connect the sealing nut 7 with the access body 5. Then, a retaining snap ring 3 can be sleeved on the surface of the polytetrafluoroethylene tube 1 and inserted into the sealing nut 7. Then, thread-connect the retaining nut 2 with the access body 5. When installing it, press the pressing block 1209 downward, and then drive the vertical column 1207 to move downward through its movement. Then, drive the transmission block 1205 and the transmission column 1206 to move through the movement of the vertical column 1207. When the transmission column 1206 moves, it squeezes the surface of the connecting rod 1204, so that the connecting rod 1204 rotates with the rotating shaft as the base point. When the connecting rod 1204 rotates, it squeezes the surface of the connecting column 1203, and then drives the connecting column 1203 to move away from the sealing nut 7. When the connecting column 1203 moves, it drives the connecting block 1202 and the clamping column 1201 to move. At this time, the installation of the retaining nut 2 can be completed. Then release the pressing block 1209, and drive the clamping column 1201 to move in the opposite direction through the pulling force of the second tension spring 15. Then, complete the assembly of the sealing nut 7 and the retaining nut 2 by inserting the clamping column 1201 into the slot 10.
[0033] In summary, for the joint sealing structure of the pressure-bearing plastic pipe, by using the cooperation of the polytetrafluoroethylene tube 1, the retaining nut 2, the retaining snap ring 3, the O-ring 4, the access body 5, the inlay 6, the sealing nut 7, the first placement groove 8, the second placement groove 9, the slot 10, the cavity 11, the clamping structure 12, the clamping column 1201, the connecting block 1202, the connecting column 1203, the connecting rod 1204, the transmission block 1205, the transmission column 1206, the vertical column 1207, the first tension spring 1208, the pressing block 1209, the extension block 13, the guide rod 14 and the second tension spring 15, it solves the problem that whether it is a metal pipe or a plastic pipe, the sealing performance needs to be ensured at the joint. Poor sealing or failure may lead to medium leakage, causing casualties, property losses and environmental pollution.
[0034] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.
[0035] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A joint sealing structure for a pressure-bearing plastic pipe, comprising a polytetrafluoroethylene pipe (1), a stop nut (2), a stop collar (3), an O-ring (4), an access body (5), an embedded body (6) and a sealing nut (7), characterized in that: The inlay (6) is provided with a first placement groove (8) on both left and right sides, an O-type sealing ring (4) is provided inside the first placement groove (8), a second placement groove (9) is provided on the right side of the sealing nut (7), the inlay (6) is arranged inside the second placement groove (9), and the inlay (6) is in close contact with the inner wall of the second placement groove (9), the sealing nut (7) is threadedly connected to the access body (5), the polytetrafluoroethylene tube (1) is inserted into the sealing nut (7), the O-type sealing ring (4) forms a seal between the polytetrafluoroethylene tube (1) and the inlay (6), a stop nut (2) is sleeved on the surface of the polytetrafluoroethylene tube (1), the stop nut (2) is threadedly connected to the access body (5), a stop clamp (3) is sleeved on the surface of the polytetrafluoroethylene tube (1), and the stop clamp (3) is arranged between the stop nut (2) and the sealing nut (7).
2. A joint sealing structure for a pressure-bearing plastic pipe according to claim 1, characterized in that: The O-type sealing ring (4) forms a seal between the access body (5) and the embedded body (6).
3. A joint sealing structure for a pressure-bearing plastic pipe according to claim 1, characterized in that: A slot (10) is provided on the surface of the sealing nut (7).
4. A joint sealing structure for a pressure-bearing plastic pipe according to claim 1, characterized in that: A cavity (11) is provided inside the stop nut (2), and a clamping structure (12) is provided inside the cavity (11).
5. A joint sealing structure for a pressure-bearing plastic pipe as claimed in claim 4, characterized in that: The clamping structure (12) comprises a clamping column (1201), a connecting block (1202), a connecting column (1203), a connecting rod (1204), a transmission block (1205), a transmission column (1206), a vertical column (1207), a first tension spring (1208) and a pressing block (1209); the connecting block (1202) is fixedly connected to the top of the clamping column (1201), and the bottom of the clamping column (1201) passes through the surface of the stop nut (2) and extends to the inside of the slot (10) on the surface of the sealing nut (7); the connecting column (1203) is fixedly connected to the front side of the connecting block (1202); the connecting rod (1204) is rotatably connected to the middle part of the cavity (11) via a rotating shaft, and the connecting rod (1204) is close to the connecting column (120 3) is sleeved on the surface of the connecting column (1203), the transmission block (1205) is arranged on the rear side of the connecting rod (1204) and is located at the other end of the connecting rod (1204), the transmission column (1206) is fixedly connected to the front side of the transmission block (1205) and passes through the surface of the connecting rod (1204), the vertical column (1207) is fixedly connected to the top of the transmission block (1205), the first tension spring (1208) is sleeved on the surface of the vertical column (1207), and the two ends are respectively fixedly connected to the surface of the transmission block (1205) and the inner wall of the cavity (11), the pressing block (1209) is fixedly connected to the top of the vertical column (1207), and the top of the pressing block (1209) passes through and extends out of the surface of the stop nut (2).
6. A joint sealing structure for a pressure-bearing plastic pipe as claimed in claim 5, characterized in that: The left and right sides of the connecting block (1202) are fixedly connected to extension blocks (13), the bottom of the inner wall of the cavity (11) is fixedly connected to a guide rod (14), and the top of the guide rod (14) penetrates and extends out of the surface of the extension block (13), the surface of the guide rod (14) is sleeved with a second tension spring (15), and the two ends of the second tension spring (15) are respectively fixedly connected to the surface of the extension block (13) and the inner wall of the cavity (11).