A telescopic sealing device for new and old sewer pipe connection

Abstract

The application discloses a telescopic sealing device for connecting new and old sewage pipes, and belongs to the technical field of pipe connection construction, which comprises a communicating pipe and a sewage pipe, the two ends of the communicating pipe are fixedly connected with connecting heads, and the connecting heads are internally inlaid with sealing rubber rings; by tightening the sealing sleeve, radial pressure is applied to the elastic clamping pieces, so that the elastic clamping pieces tightly wrap the outer wall of the sewage pipe, the connection of the sewage pipe is realized, the elastic deformation capacity of the elastic clamping pieces is utilized, the device can adapt to slight misalignment of the sewage pipe and can also ensure the stability of the connection, the sealing rubber ring inlaid in the connecting head directly contacts the sewage pipe port, an initial sealing barrier is formed, a leakage channel is blocked, sealing slurry is injected into the gap between the connecting head and the sewage pipe through a grouting opening, and after the sealing slurry is solidified, all slight gaps are filled, and the sealing reliability of the connection position is further improved.

Description

Technical Field

[0001] This application relates to the field of pipeline connection construction technology, and in particular to a retractable sealing device for connecting new and old sewage pipelines. Background Technology

[0002] As a crucial component of urban infrastructure, stormwater and sewage pipelines play a vital role in drainage, flood control, and sewage transport. Their long-term stable operation directly impacts urban water quality and residents' living environment. However, with increasing service life, pipelines inevitably suffer various forms of damage under complex operating conditions, necessitating the replacement of some older pipelines. The old and new pipelines are connected using a connecting device.

[0003] Traditional connection methods mostly use rigid connection structures, such as rigid flange butt joints and sleeve welding. Due to problems such as deformation and misalignment of old pipes, traditional rigid connection methods are difficult to guarantee the sealing effect and are prone to leakage. Therefore, an improvement has been made to a retractable sealing device for connecting new and old sewage pipes. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a retractable sealing device for connecting new and old sewage pipes. This device overcomes the deficiencies of existing technologies and aims to solve the problem that traditional connection methods, which mostly use rigid connection structures such as rigid flange butt joints and sleeve welding, cannot guarantee a sealing effect due to problems such as deformation and misalignment of old pipes, and are prone to leakage.

[0005] To achieve the above objectives, this application provides the following technical solution: a retractable sealing device for connecting new and old sewage pipes, comprising a connecting pipe and a sewage pipe, wherein connectors are fixedly connected to both ends of the connecting pipe, a sealing rubber ring is embedded inside the connector, and a plurality of elastic clips are provided at the end of the connector away from the sealing rubber ring, the end of the sewage pipe is inserted between the connecting pipe and the connector, a sealing sleeve is threaded onto the outer wall of the connector, a grouting port is provided on the side of the outer wall of the connector near the sealing rubber ring, and sealing grout is injected into the interior of the connector through the grouting port.

[0006] By adopting the above technical solution, since the sealing sleeve is threaded onto the outer wall of the connector, tightening the sealing sleeve will apply radial pressure to the elastic clip, causing the elastic clip to tightly wrap around the outer wall of the sewage pipe, thus achieving the connection of the sewage pipe. Utilizing the elastic deformation capability of the elastic clip, the device can adapt to minor misalignments of the sewage pipe while ensuring the stability of the connection. The sealing rubber ring embedded inside the connector directly contacts the sewage pipe port, forming an initial sealing barrier to block leakage channels. Sealing grout is injected into the gap between the connector and the sewage pipe through the grouting port. After the sealing grout cures, it will fill all the tiny gaps, further improving the sealing reliability of the joint.

[0007] As a preferred technical solution of this application, the connecting pipe consists of a corrugated pipe and two rigid pipes, and the two rigid pipes are symmetrically arranged on both sides of the corrugated pipe.

[0008] By adopting the above technical solution, the corrugated pipe has flexible deformation characteristics along the axial direction, and can be stretched or compressed within a certain range to adapt to the misalignment of the sewage pipe. The rigid pipe has high structural strength and is symmetrically arranged on both sides of the corrugated pipe, and is fixedly connected to the connectors at both ends to provide a reliable installation benchmark.

[0009] As a preferred embodiment of this application, the end of the sewage pipe abuts against the outer side of the sealing rubber ring, the outer wall of the sewage pipe fits against the inner wall of the elastic clip, and the sealing slurry is located in the gap between the connector and the sewage pipe.

[0010] By adopting the above technical solution, the end of the sewage pipe directly abuts against the outside of the sealing rubber ring, and the elastic deformation of the rubber ring is used to achieve a seal, blocking the leakage channel. The elastic force of the elastic clip forms a radial clamping force on the sewage pipe, limiting the radial sway of the sewage pipe and ensuring the connection stability of the sewage pipe. All tiny gaps are filled by injecting sealing grout.

[0011] As a preferred technical solution of this application, a plurality of the elastic clips are evenly distributed in a circumferential array at the end of the connector, and an expansion joint is provided between any two adjacent elastic clips.

[0012] By adopting the above technical solution, when the sealing sleeve is tightened along the thread on the outer wall of the connector, the sealing sleeve will apply uniform radial pressure to several elastic clips, so that all elastic clips will tighten towards the center synchronously, ensuring that the clamping force on the outer wall of the sewage pipe is uniformly distributed in the circumferential direction. The existence of the expansion joint provides the necessary conditions for the elastic clips to contract radially.

[0013] As a preferred technical solution of this application, the outer wall of the connector is provided with an external thread on the side near the elastic clip, and the inner wall of the sealing sleeve is provided with an internal thread, wherein the internal thread and the external thread mesh.

[0014] By adopting the above technical solution, the sealing sleeve can be threaded onto the connector head through the cooperation between the internal and external threads.

[0015] As a preferred technical solution of this application, the inner wall of the sealing sleeve abuts against the outer wall of the elastic clip, and the curvature of the inner wall of the sealing sleeve matches the curvature of the outer wall of the elastic clip.

[0016] By adopting the above technical solution, it is ensured that when the sealing sleeve is tightened, the inner wall of the sealing sleeve can squeeze the outer wall of the elastic clip, thereby applying uniform radial pressure to the elastic clip and causing all elastic clips to tighten towards the center synchronously.

[0017] As a preferred technical solution of this application, a positioning ring is fixedly connected to the outer wall of the connector between the grouting port and the external thread. The positioning ring has a positioning hole on its outer wall, and a connecting bolt is slidably inserted into the positioning hole. The sealing sleeve has a connecting hole at one end near the positioning ring for the connecting bolt to pass through. The positioning ring is fixedly connected to the sealing sleeve by the connecting bolt.

[0018] By adopting the above technical solution, after the positioning ring is fixed to the sealing sleeve by the connecting bolt, it is equivalent to adding mechanical locking on the basis of the threaded connection, ensuring that the sealing sleeve is always in a locked state, preventing the sealing sleeve from loosening, and ensuring that the clamping force of the elastic clip and the compression effect of the sealing sleeve are not weakened.

[0019] In summary, the beneficial effects of this application are as follows: In this application, tightening the sealing sleeve applies radial pressure to the elastic clip, causing the elastic clip to tightly wrap around the outer wall of the sewage pipe, thus achieving the connection of the sewage pipe. Utilizing the elastic deformation capability of the elastic clip, the device can adapt to minor misalignments of the sewage pipe while ensuring the stability of the connection. The sealing rubber ring embedded inside the connector directly contacts the sewage pipe port, forming an initial sealing barrier to block leakage channels. Sealing grout is injected into the gap between the connector and the sewage pipe through the grouting port. After the sealing grout cures, it fills all the tiny gaps, further improving the sealing reliability of the joint. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a frontal sectional view of this application; Figure 3 This is a partial structural breakdown diagram of this application; Figure 4 This is a schematic diagram of the structure of the connecting pipe of this application.

[0021] Explanation of reference numerals in the attached figures: 1. Connecting pipe; 101. Corrugated pipe; 102. Rigid pipe; 2. Sewage pipe; 3. Connector; 4. Elastic clamp; 5. Sealing sleeve; 6. Sealing rubber ring; 7. Grouting port; 8. Sealing grout; 9. External thread; 10. Internal thread; 11. Positioning ring; 12. Positioning hole; 13. Connecting hole; 14. Connecting bolt. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this application easy to understand, the following describes this application in conjunction with specific implementation methods.

[0023] like Figure 1 - Figure 4 As shown in the figure, this embodiment provides a retractable sealing device for connecting new and old sewage pipes, including a connecting pipe 1 and a sewage pipe 2. Connectors 3 are fixedly connected to both ends of the connecting pipe 1. A sealing rubber ring 6 is embedded inside the connector 3, and several elastic clips 4 are provided at the end of the connector 3 away from the sealing rubber ring 6. The end of the sewage pipe 2 is inserted between the connecting pipe 1 and the connector 3. A sealing sleeve 5 is threaded onto the outer wall of the connector 3. A grouting port 7 is provided on the outer wall of the connector 3 near the sealing rubber ring 6, and sealing grout 8 is injected into the inside of the connector 3 through the grouting port 7. During use, due to the thread of the sealing sleeve 5... The sleeve is fitted onto the outer wall of the connector 3. Tightening the sealing sleeve 5 applies radial pressure to the elastic clip 4, causing the elastic clip 4 to tightly wrap around the outer wall of the sewage pipe 2, thus achieving the connection of the sewage pipe 2. Utilizing the elastic deformation capability of the elastic clip 4, the device can adapt to minor misalignments of the sewage pipe 2 while ensuring the stability of the connection. The sealing rubber ring 6 embedded inside the connector 3 directly contacts the port of the sewage pipe 2, forming an initial sealing barrier to block leakage channels. Sealing grout 8 is injected into the gap between the connector 3 and the sewage pipe 2 through the grouting port 7. After the sealing grout 8 cures, it will fill all the tiny gaps, further improving the sealing reliability of the joint.

[0024] In this embodiment, as Figure 4 As shown, the connecting pipe 1 consists of a corrugated pipe 101 and two rigid pipes 102, with the two rigid pipes 102 symmetrically arranged on both sides of the corrugated pipe 101. During use, the corrugated pipe 101 has axial flexible deformation characteristics and can be stretched or compressed within a certain range to adapt to the misalignment of the sewage pipe 2. The rigid pipes 102 have high structural strength and are symmetrically arranged on both sides of the corrugated pipe 101, respectively fixedly connected to the connectors 3 at both ends, providing a reliable installation reference.

[0025] In this embodiment, as Figure 2 and 3As shown, the end of the sewage pipe 2 abuts against the outer side of the sealing rubber ring 6, and the outer wall of the sewage pipe 2 fits against the inner wall of the elastic clamp 4. The sealing grout 8 is located in the gap between the connector 3 and the sewage pipe 2. In use, the end of the sewage pipe 2 directly abuts against the outer side of the sealing rubber ring 6, and the elastic deformation of the rubber ring is used to achieve a seal and block the leakage channel. The elastic force of the elastic clamp 4 forms a radial clamping force on the sewage pipe 2, which restricts the radial shaking of the sewage pipe 2 and ensures the connection stability of the sewage pipe 2. The sealing grout 8 is used to fill all the tiny gaps.

[0026] In this embodiment, as Figure 2 and 3 As shown, several elastic clips 4 are evenly distributed in a circumferential array at the end of the connector 3, and an expansion joint is provided between any two adjacent elastic clips 4. In use, when the sealing sleeve 5 is tightened along the thread on the outer wall of the connector 3, the sealing sleeve 5 will apply a uniform radial pressure to several elastic clips 4, so that all elastic clips 4 tighten towards the center synchronously, ensuring that the clamping force on the outer wall of the sewage pipe 2 is uniformly distributed in the circumferential direction. The existence of the expansion joint provides the necessary condition for the elastic clips 4 to contract radially.

[0027] In this embodiment, as Figure 2 and 3 As shown, the outer wall of the connector 3 is provided with an external thread 9 on the side near the elastic clip 4, and the inner wall of the sealing sleeve 5 is provided with an internal thread 10. The internal thread 10 and the external thread 9 mesh with each other. In use, the sealing sleeve 5 can be threaded onto the connector 3 through the cooperation between the internal thread 10 and the external thread 9.

[0028] In this embodiment, as Figure 2 and 3 As shown, the inner wall of the sealing sleeve 5 abuts against the outer wall of the elastic clip 4, and the curvature of the inner wall of the sealing sleeve 5 matches the curvature of the outer wall of the elastic clip 4. In use, it is ensured that when the sealing sleeve 5 is tightened, the inner wall of the sealing sleeve 5 can squeeze the outer wall of the elastic clip 4, thereby applying uniform radial pressure to the elastic clip 4, so that all the elastic clips 4 tighten towards the center synchronously.

[0029] In this embodiment, as Figure 2 and 3As shown, a positioning ring 11 is fixedly connected to the outer wall of the connector 3 between the grouting port 7 and the external thread 9. The outer wall of the positioning ring 11 has a positioning hole 12, and a connecting bolt 14 is slidably inserted into the positioning hole 12. The end of the sealing sleeve 5 near the positioning ring 11 has a connecting hole 13 for the connecting bolt 14 to pass through. The positioning ring 11 is fixedly connected to the sealing sleeve 5 by the connecting bolt 14. In use, after the positioning ring 11 is fixed to the sealing sleeve 5 by the connecting bolt 14, it is equivalent to adding a mechanical lock on the basis of the threaded connection, ensuring that the sealing sleeve 5 is always in a locked state, preventing the sealing sleeve 5 from loosening, and ensuring that the clamping force of the elastic clip 4 and the compression effect of the sealing sleeve 5 are not weakened.

[0030] The working principle of this application is as follows: When using the retractable sealing device for connecting new and old sewage pipes, the connecting pipe 1 is first placed at the connection point, and then the end of the sewage pipe 2 is slowly inserted into the connector 3 until the end face of the sewage pipe 2 is completely abutted against the sealing rubber ring 6 inside the connector 3. At this time, the sealing rubber ring 6 is initially compressed, forming the basis of the first axial seal. Then, the sealing sleeve 5 located on the outer wall of the connector 3 is tightened. The sealing sleeve 5 applies uniform radial pressure to several elastic clips 4, so that all elastic clips 4 are simultaneously tightened towards the center and tightly wrapped around the outer wall of the sewage pipe 2, thus completing the connection of the sewage pipe 2. Then, the positioning ring 11 and the sealing sleeve 5 are fixed together by the connecting bolt 14. Finally, the sealing grout 8 is injected into the gap between the connector 3 and the sewage pipe 2 through the grouting port 7. After the sealing grout 8 is cured, it will fill all the tiny gaps.

[0031] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.

Claims

1. A retractable sealing device for connecting new and old sewage pipes, comprising a connecting pipe (1) and a sewage pipe (2), characterized in that, The two ends of the connecting pipe (1) are fixedly connected to the connector (3). A sealing rubber ring (6) is embedded inside the connector (3). Several elastic clips (4) are provided at the end of the connector (3) away from the sealing rubber ring (6). The end of the sewage pipe (2) is inserted between the connecting pipe (1) and the connector (3). A sealing sleeve (5) is threaded onto the outer wall of the connector (3). A grouting port (7) is provided on the side of the outer wall of the connector (3) near the sealing rubber ring (6). Sealing grout (8) is injected into the inside of the connector (3) through the grouting port (7). The connecting pipe (1) consists of a corrugated pipe (101) and two rigid pipes (102), and the two rigid pipes (102) are symmetrically arranged on both sides of the corrugated pipe (101). The outer wall of the connector (3) is fixedly connected to the grouting port (7) and the external thread (9) with a positioning ring (11). The outer wall of the positioning ring (11) is provided with a positioning hole (12). A connecting bolt (14) is slidably inserted into the positioning hole (12). The end of the sealing sleeve (5) near the positioning ring (11) is provided with a connecting hole (13) for the connecting bolt (14) to pass through. The positioning ring (11) is fixedly connected to the sealing sleeve (5) by the connecting bolt (14).

2. The retractable sealing device for connecting new and old sewage pipes according to claim 1, characterized in that, The end of the sewage pipe (2) abuts against the outside of the sealing rubber ring (6), the outer wall of the sewage pipe (2) fits against the inner wall of the elastic clip (4), and the sealing slurry (8) is located in the gap between the connector (3) and the sewage pipe (2).

3. A retractable sealing device for connecting new and old sewage pipes according to claim 1, characterized in that, Several elastic clips (4) are evenly distributed in a circumferential array at the end of the connector (3), and an expansion joint is provided between any two adjacent elastic clips (4).

4. A retractable sealing device for connecting new and old sewage pipes according to claim 1, characterized in that, The outer wall of the connector (3) is provided with an external thread (9) on the side near the elastic clip (4), and the inner wall of the sealing sleeve (5) is provided with an internal thread (10), which meshes with the external thread (9).

5. A retractable sealing device for connecting new and old sewage pipes according to claim 1, characterized in that, The inner wall of the sealing sleeve (5) abuts against the outer wall of the elastic clip (4), and the curvature of the inner wall of the sealing sleeve (5) matches the curvature of the outer wall of the elastic clip (4).

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