A sealing mechanism for connecting stainless steel pipes

Abstract

The application relates to the field of stainless steel pipe connection, and discloses a stainless steel pipe connection sealing mechanism, which comprises two stainless steel pipes and a connecting head arranged between the two stainless steel pipes. Inner thread assembly grooves are arranged on the left and right sides of the connecting head. A same communication hole is arranged on the inner wall of the side, where the two inner thread assembly grooves are close to each other. The ends, where the two stainless steel pipes are close to each other, respectively penetrate through the corresponding inner thread assembly grooves and extend into the communication hole. Bearings are fixedly sleeved on the two stainless steel pipes. The outer rings of the two bearings are fixedly sleeved with outer thread sleeves. The application has the following advantages and effects: multiple sealing between the two stainless steel pipes and the connecting head can be realized, the sealing performance of the connection part of the two stainless steel pipes can be ensured through the synergistic effect of multiple sealing, the omnibearing sealing effect is realized, and the application is suitable for fluid conveying scenes with strict sealing requirements.

Description

Technical Field

[0001] This application relates to the field of stainless steel pipe connection technology, and in particular to a stainless steel pipe connection sealing mechanism. Background Technology

[0002] Stainless steel pipes are widely used in fluid transport systems across numerous fields, including industrial production, building water supply and drainage, and gas transmission, due to their advantages such as corrosion resistance, high strength, and long service life. In the actual use of stainless steel pipes, the sealing of the connections between pipes is a crucial factor in ensuring the safe and stable operation of the entire system.

[0003] Currently, common stainless steel pipe connection and sealing methods include welding, flange connections, and threaded connections. While welding can achieve high connection strength and sealing performance, it is prone to deformation and stress concentration during the welding process, and is difficult to disassemble after welding, which is not conducive to later maintenance and repair. Flange connections have good sealing performance and are easy to disassemble, but require more parts, resulting in higher installation costs and larger space requirements. Threaded connections have a relatively simple structure and are relatively convenient to operate, therefore, they are also widely used.

[0004] In related technologies, the traditional method of connecting two stainless steel pipes is by threaded connection. However, the sealing performance is limited. During the threaded connection process of stainless steel pipes, the thread surface is easily damaged, such as by scratches or deformation. This damage will destroy the integrity of the thread, making it impossible for the sealing surface to fit tightly and reducing the sealing performance. Especially when stainless steel pipes are frequently disassembled and installed, the wear of the thread will be more severe, making it difficult to meet the needs of some special scenarios with extremely high sealing requirements.

[0005] Therefore, we propose a stainless steel pipe connection sealing mechanism to solve the above problems. Utility Model Content

[0006] The purpose of this application is to provide a stainless steel pipe connection sealing mechanism that can achieve multiple seals between two stainless steel pipes and the connector, ensure the sealing performance of the connection between the two stainless steel pipes, achieve an all-round sealing effect, and is suitable for fluid transportation scenarios with stringent sealing requirements.

[0007] The above-mentioned technical objective of this application is achieved through the following technical solution: a stainless steel pipe connection sealing mechanism, comprising two stainless steel pipes and a connector disposed between the two stainless steel pipes, wherein internal thread assembly grooves are provided on both the left and right sides of the connector, and a common connecting hole is provided on the inner wall of the side of the two internal thread assembly grooves that are close to each other, the ends of the two stainless steel pipes that are close to each other respectively pass through the corresponding internal thread assembly grooves and extend into the connecting hole, bearings are fixedly fitted on both stainless steel pipes, and external thread sleeves are fixedly fitted on the outer rings of the two bearings, the ends of the two external thread sleeves that are close to each other are respectively threaded into the corresponding internal thread assembly grooves, and a sealing assembly is provided between the two stainless steel pipes and the connector, the sealing assembly including two sealing rings and a frustum-shaped cover. 1. Frustum-shaped cover 2 and sealing ring 2. Two sealing rings 1 are respectively fixedly installed on the inner walls of the two internal threaded assembly grooves that are close to each other. Annular grooves are opened on the sides of the two external threaded sleeves that are close to each other. The two sealing rings 1 are respectively slidably sealed in the corresponding annular grooves. Frustum-shaped cover 1 and frustum-shaped cover 2 are respectively fixedly installed on the ends of the two stainless steel tubes that are close to each other. The left side of frustum-shaped cover 1 extends into frustum-shaped cover 2. Sealing ring 2 is fixedly installed on the inner wall of frustum-shaped cover 2. Frustum-shaped cover 1 and frustum-shaped cover 2 are slidably sealed together through sealing ring 2. Fixing blocks are fixedly installed at the top and bottom of the two stainless steel tubes. Positioning grooves are opened on the four fixing blocks. Positioning components are provided at the top and bottom of the connector. The positioning components are used to restrict the rotation of the stainless steel tubes.

[0008] A further provision of this application is that the number of the second sealing rings is not less than two.

[0009] A further feature of this application is that the sealing assembly further includes a sealing ring three, which is fixedly fitted onto the outer wall of the stainless steel pipe, and the outer ring wall of the sealing ring three slides and seals against the inner wall of the external threaded sleeve.

[0010] A further provision of this application is that the number of sealing rings 3 provided on the same external threaded sleeve is not less than two.

[0011] A further configuration of this application is as follows: the positioning assembly includes a bearing, a lead screw, a lifting beam, two positioning rods, and a knob. The bearing is fixedly installed on the outer wall of the connector, the lead screw is rotatably installed on the bearing, the lifting beam is threaded onto the lead screw, the two positioning rods are respectively fixedly installed at both ends of the lifting beam, one end of the positioning rod is slidably installed in the corresponding positioning groove, and the knob is fixedly installed at the end of the lead screw away from the bearing.

[0012] A further feature of this application is that two symmetrically arranged guide rods are fixedly installed on the lifting beam, and two guide grooves are opened at the top and bottom of the connector, with the guide rods slidably installed in the corresponding guide grooves.

[0013] This application includes at least one of the following beneficial technical effects:

[0014] This application utilizes a threaded connection method of external thread sleeve and internal thread assembly groove, which makes the installation and disassembly of two stainless steel pipes and connectors simple and convenient, reducing construction difficulty and time costs.

[0015] This application utilizes a positioning component to restrict the rotation of the stainless steel pipe, ensuring that the connected stainless steel pipe will not twist due to external forces during use, thereby enhancing the stability and reliability of the connection and improving the safety of the entire pipeline system.

[0016] This application utilizes a sealing component to achieve multiple seals between two stainless steel pipes and the connector. Through the synergistic effect of these multiple seals, the sealing performance of the connection between the two stainless steel pipes can be ensured, achieving a comprehensive sealing effect. This is suitable for fluid transportation scenarios with stringent sealing requirements. Attached Figure Description

[0017] Figure 1 This is a front-view stereoscopic structural diagram of this embodiment.

[0018] Figure 2 This is a front view sectional three-dimensional structural schematic diagram of this embodiment.

[0019] Figure 3 This is a three-dimensional structural diagram of the embodiment with the connector removed.

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the frustum-shaped cover.

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the frustum-shaped cover.

[0022] Figure 6 This is a three-dimensional structural diagram of the connector.

[0023] In the diagram, 1. Stainless steel pipe; 2. Connector; 3. Internal thread assembly groove; 4. Connecting hole; 5. Bearing; 6. External thread sleeve; 7. Sealing ring one; 8. Annular groove; 9. Frustum-shaped cover one; 10. Frustum-shaped cover two; 11. Sealing ring two; 12. Sealing ring three; 13. Fixing block; 14. Positioning groove; 15. Shaft seat; 16. Lead screw; 17. Lifting beam; 18. Positioning insert rod; 19. Knob; 20. Guide rod; 21. Guide groove. Detailed Implementation

[0024] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] See Figures 1-6 This application provides a stainless steel pipe connection sealing mechanism, including two stainless steel pipes 1 and a connector 2 disposed between the two stainless steel pipes 1. Internal threaded mounting grooves 3 are provided on both the left and right sides of the connector 2. A common connecting hole 4 is provided on the inner wall of the side of the two internal threaded mounting grooves 3 that are close to each other. The ends of the two stainless steel pipes 1 that are close to each other pass through the corresponding internal threaded mounting grooves 3 and extend into the connecting hole 4. Bearings 5 ​​are fixedly mounted on both stainless steel pipes 1. External threaded sleeves 6 are fixedly mounted on the outer rings of both bearings 5. The ends of the two external threaded sleeves 6 that are close to each other are threaded into the corresponding internal threaded mounting grooves 3. The threaded connection between the external threaded sleeves 6 and the internal threaded mounting grooves 3, combined with the bearings 5, ensures that the stainless steel pipes 1 and the connector 2 are tightly fixed and can withstand certain axial tensile and compressive forces. At the same time, the threaded connection method makes the installation and disassembly of the stainless steel pipes 1 and the connector 2 simple and convenient, reducing construction difficulty and time costs.

[0026] In this embodiment, a sealing assembly is provided between the two stainless steel pipes 1 and the connector 2. The sealing assembly includes two sealing rings 7, a frustum-shaped cover 9, a frustum-shaped cover 10, and a sealing ring 11. The two sealing rings 7 are respectively fixedly installed on the inner walls of the two internal threaded mounting grooves 3 that are close to each other. Annular grooves 8 are provided on the sides of the two external threaded sleeves 6 that are close to each other. The two sealing rings 7 are slidably sealed in the corresponding annular grooves 8. The frustum-shaped cover 9 and the frustum-shaped cover 10 are respectively fixedly installed at the ends of the two stainless steel pipes 1 that are close to each other. The left side of the frustum-shaped cover 9 extends into the frustum-shaped cover 10. The sealing ring 11 is fixedly installed on the inner wall of the frustum-shaped cover 10. The frustum-shaped cover 9 slides and seals with the frustum-shaped cover 10 through the sealing ring 11. The sealing assembly also includes a sealing ring 3. 12. Sealing ring 3 12 is fixedly fitted on the outer wall of stainless steel pipe 1. The outer ring wall of sealing ring 3 12 slides and seals against the inner wall of external thread sleeve 6. The design of sealing ring 1 7 forms an annular sealing structure between the internal thread assembly groove 3 and the external thread sleeve 6, effectively preventing liquid or gas from leaking from the transverse gap between connector 2 and stainless steel pipe 1. The design of sealing ring 2 11 forms an annular sealing structure between frustum-shaped cover 1 9 and frustum-shaped cover 2 10, further enhancing the sealing effect. The design of sealing ring 3 12 forms an annular sealing structure between the outer wall of stainless steel pipe 1 and the inner wall of external thread sleeve 6, preventing liquid or gas from penetrating along the axial direction of stainless steel pipe 1. Thus, through the synergistic effect of multiple seals, the sealing performance of the connection between the two stainless steel pipes 1 can be ensured, making it suitable for fluid transportation scenarios with stringent sealing requirements.

[0027] In this embodiment, there are no fewer than two sealing rings 11 and no fewer than two sealing rings 12 on the same external threaded sleeve 6, which are used to enhance the sealing effect of the connection between the two stainless steel pipes 1.

[0028] In this embodiment, fixing blocks 13 are fixedly installed at the top and bottom of the two stainless steel pipes 1. Positioning grooves 14 are provided on all four fixing blocks 13. Positioning components are provided at the top and bottom of the connector 2. These positioning components restrict the rotation of the stainless steel pipes 1. Each positioning component includes a shaft seat 15, a lead screw 16, a lifting beam 17, two positioning rods 18, and a knob 19. The shaft seat 15 is fixedly installed on the outer wall of the connector 2. The lead screw 16 is rotatably installed on the shaft seat 15. The lifting beam 17 is threaded onto the lead screw 16. The two positioning rods 18 are respectively fixedly installed at both ends of the lifting beam 17. One end of each positioning rod 18 is slidably installed on the corresponding positioning rod. Inside the groove 14, the knob 19 is fixedly installed at the end of the lead screw 16 away from the bearing 15. The design of the positioning component effectively restricts the rotation of the stainless steel pipe 1. The positioning component, consisting of the bearing 15, lead screw 16, lifting beam 17, positioning rod 18, and knob 19, ensures that the stainless steel pipe 1 will not be twisted due to external force during use by inserting the positioning rod 18 into the positioning groove 14 of the fixing block 13. This enhances the stability and reliability of the connection and improves the safety of the entire pipeline system. The design of the knob 19 makes it easy for operators to quickly adjust the position of the positioning rod 18, thereby achieving rapid positioning and fixing of the stainless steel pipe 1.

[0029] In this embodiment, two symmetrically arranged guide rods 20 are fixedly installed on the lifting beam 17. Two guide grooves 21 are opened at the top and bottom of the connector 2. The guide rods 20 are slidably installed in the corresponding guide grooves 21. By utilizing the cooperation between the guide rods 20 and the guide grooves 21, the stability and accuracy of the lifting process of the lifting beam 17 are ensured, making the positioning operation smoother and further improving the installation efficiency.

[0030] With the above structure, the operating principle of the stainless steel pipe connection sealing mechanism provided in this application is as follows:

[0031] When the two stainless steel pipes 1 are installed and connected to the connector 2, the ends of the two stainless steel pipes 1 with the external thread sleeves 6 are aligned with the internal thread assembly grooves 3 on one side of the connector 2. By rotating the external thread sleeves 6, the connection between the two stainless steel pipes 1 and the connector 2 is achieved by the threaded connection. At this time, the left side of the frustum-shaped cover 9 is inserted into the frustum-shaped cover 10. The sealing ring 11 inside the frustum-shaped cover 10 slides and seals against the outer wall of the frustum-shaped cover 9. The two sealing rings 7 are respectively inserted and sealed in the corresponding annular grooves 8.

[0032] After the two stainless steel pipes 1 are connected and fixed to the connector 2, the operator rotates the knob 19. The knob 19 drives the lead screw 16 to rotate. Under the threaded transmission of the lead screw 16 and the guiding action of the guide rod 20 and the guide groove 21, the lifting beam 17 drives the positioning rods 18 at both ends to gradually move towards the connector 2. When one end of the positioning rod 18 is inserted into the corresponding positioning groove 14, the two stainless steel pipes 1 are quickly positioned and fixed, ensuring that the connected stainless steel pipes 1 will not be twisted due to external force during use, thus enhancing the stability and reliability of the connection.

[0033] During use, the sealing ring 7 fits tightly against the inner wall of the annular groove 8, forming an annular sealing structure between the internal thread assembly groove 3 and the external thread sleeve 6, effectively preventing liquid or gas leakage from the transverse gap between the connector 2 and the stainless steel pipe 1. The sealing ring 11 forms an annular sealing structure between the frustum-shaped cover 9 and the frustum-shaped cover 10, further enhancing the sealing effect. The sealing ring 12 forms an annular sealing structure between the outer wall of the stainless steel pipe 1 and the inner wall of the external thread sleeve 6, preventing liquid or gas from penetrating along the axial direction of the stainless steel pipe 1. Thus, through the synergistic effect of multiple seals, the sealing performance of the connection between the two stainless steel pipes 1 can be ensured, making it suitable for fluid transportation scenarios with stringent sealing requirements.

Claims

1. A stainless steel pipe connection sealing mechanism, characterized in that, The device includes two stainless steel pipes (1) and a connector (2) between the two stainless steel pipes (1). The connector (2) has internal threaded mounting grooves (3) on both sides. The inner walls of the two internal threaded mounting grooves (3) that are close to each other have the same connecting hole (4). The two stainless steel pipes (1) have their close ends passing through the corresponding internal threaded mounting grooves (3) and extending into the connecting hole (4). The two stainless steel pipes (1) are each fixedly fitted with a bearing (5). The outer rings of the two bearings (5) are each fixedly fitted with an external threaded sleeve (6). The two external threaded sleeves (6) are respectively threaded into the corresponding internal threaded mounting grooves (3) at their close ends. A sealing assembly is provided between the two stainless steel pipes (1) and the connector (2). The sealing assembly includes two sealing rings (7), a frustum-shaped cover (9), a frustum-shaped cover (10), and a sealing ring (11). The two sealing rings (7) are respectively fixedly installed. On the inner wall of the two internal thread assembly grooves (3) that are close to each other, annular grooves (8) are provided on the inner wall of the two external thread sleeves (6) that are close to each other. The two sealing rings (7) are respectively slidably sealed in the corresponding annular grooves (8). The frustum cover (9) and the frustum cover (10) are respectively fixedly installed at the two stainless steel pipes (1) that are close to each other. The left side of the frustum cover (9) extends into the frustum cover (10). The sealing ring (11) is fixedly installed on the inner wall of the frustum cover (10). The frustum cover (9) slides and seals with the frustum cover (10) through the sealing ring (11). Fixing blocks (13) are fixedly installed at the top and bottom of the two stainless steel pipes (1). Positioning grooves (14) are provided on the four fixing blocks (13). Positioning components are provided at the top and bottom of the connector (2). The positioning components are used to restrict the rotation of the stainless steel pipe (1).

2. The stainless steel pipe connection sealing mechanism according to claim 1, characterized in that: The number of the second sealing ring (11) is not less than two.

3. The stainless steel pipe connection sealing mechanism according to claim 1, characterized in that: The sealing assembly also includes a sealing ring three (12), which is fixedly fitted on the outer wall of the stainless steel pipe (1), and the outer ring wall of the sealing ring three (12) slides and seals against the inner wall of the external threaded sleeve (6).

4. The stainless steel pipe connection sealing mechanism according to claim 3, characterized in that: The number of sealing rings (12) provided on the same external threaded sleeve (6) shall not be less than two.

5. The stainless steel pipe connection sealing mechanism according to claim 1, characterized in that: The positioning assembly includes a bearing seat (15), a lead screw (16), a lifting beam (17), two positioning rods (18), and a knob (19). The bearing seat (15) is fixedly installed on the outer wall of the connector (2). The lead screw (16) is rotatably installed on the bearing seat (15). The lifting beam (17) is threaded onto the lead screw (16). The two positioning rods (18) are respectively fixedly installed at both ends of the lifting beam (17). One end of the positioning rod (18) is slidably installed in the corresponding positioning groove (14). The knob (19) is fixedly installed at the end of the lead screw (16) away from the bearing seat (15).

6. The stainless steel pipe connection sealing mechanism according to claim 5, characterized in that: Two symmetrically arranged guide rods (20) are fixedly installed on the lifting beam (17). Two guide grooves (21) are opened at the top and bottom of the connector (2). The guide rods (20) are slidably installed in the corresponding guide grooves (21).

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