A leak-proof structure for building water supply and drainage

Abstract

This utility model discloses a leak-proof structure for building water supply and drainage, belonging to the field of building water supply and drainage technology. The leak-proof structure includes a plug-in ring connected to a connecting pipe. A pipe opening groove is provided at the end of the connecting pipe away from the plug-in ring. The plug-in ring can be inserted into the pipe opening groove of an adjacent connecting pipe, allowing the two adjacent connecting pipes to slide relative to each other. A limiting component is provided on the pipe opening groove, which can slide relative to the groove. A limiting hole is provided on the plug-in ring, and the limiting component slides towards the limiting hole until it is inserted into the limiting hole. Sealing gaskets are provided on the outer wall of the plug-in ring and the inner wall of the pipe opening groove. After the two connecting pipes are inserted, a double waterproof barrier is formed by the two sealing gaskets. This utility model has a relatively simple connection process, which can significantly improve the installation speed. Furthermore, the insertion of the limiting hole and the limiting component provides a firm and reliable circumferential and axial fixation, ensuring that the connection point will not accidentally detach or shift after locking, thus enhancing the sealing stability.

Description

Technical Field

[0001] This utility model belongs to the field of building water supply and drainage technology, and in particular relates to a seepage-proof structure for building water supply and drainage. Background Technology

[0002] The building water supply and drainage system is an important part of building engineering. It is responsible for providing the water needed for living, production and fire protection, and for timely discharge of sewage and wastewater. The normal operation of the water supply and drainage system is directly related to the building's functionality and people's quality of life.

[0003] Currently, when connecting existing building water supply and drainage system pipes, workers generally use adhesive connectors. However, adhesive bonding requires high levels of skill from workers and high-quality adhesives. Furthermore, it prevents quick assembly and disassembly, thus reducing the efficiency of water supply and drainage construction.

[0004] Therefore, there is an urgent need to design a seepage-proof structure for building water supply and drainage to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a seepage-proof structure for building water supply and drainage, which has the advantage of being able to be quickly assembled and disassembled, thus solving the problem of reduced efficiency in construction water supply and drainage due to the inability to quickly assemble and disassemble.

[0006] To achieve the above objectives, the specific technical solution of the anti-leakage structure for building water supply and drainage of this utility model is as follows: A leak-proof structure for building water supply and drainage includes a plug ring connected to a connecting pipe. A pipe opening groove is provided at the end of the connecting pipe away from the plug ring. The plug ring can be inserted into the pipe opening groove of an adjacent connecting pipe, allowing the two adjacent connecting pipes to slide relative to each other. A limiting component is provided on the pipe opening groove, which can slide relative to the groove. A limiting hole is provided on the plug ring. After the plug ring is in contact with the side wall of the pipe opening groove of the adjacent connecting pipe, any connecting pipe can be rotated until the limiting component and the limiting hole are on the same straight line. Subsequently, the limiting component slides towards the limiting hole until it is inserted into the limiting hole. Sealing gaskets are provided on the outer wall of the plug ring and the inner wall of the pipe opening groove. After the two connecting pipes are inserted, a double waterproof barrier is formed by the two sealing gaskets.

[0007] Furthermore, a protrusion is fixedly connected to the pipe opening groove, a limiting component is provided on the protrusion, a limiting groove is opened on the plug ring, the opening of the limiting groove passes through the plug ring, and a limiting hole is opened at the end of the limiting groove. The plug ring slides along the protrusion on the adjacent connecting pipe opening groove through the limiting groove.

[0008] Furthermore, the limiting groove includes an axial segment and a contour segment, which are connected. When the insertion ring is inserted into the slot of the adjacent connecting pipe, the protrusion slides along the axial segment. When the insertion ring is in contact with the side wall of the slot of the adjacent connecting pipe, the protrusion is located at the intersection of the axial segment and the contour segment. When any connecting pipe is rotated, the protrusion slides along the contour segment. The limiting hole is located at the end of the contour segment. When the protrusion slides to the end of the contour segment, the limiting component can be inserted into the limiting hole.

[0009] Furthermore, the limiting component includes a limiting rod that can slide along the protrusion. When the protrusion slides along the limiting groove, the limiting rod is located inside the protrusion. When the limiting rod and the limiting hole are on the same straight line, the limiting rod slides toward the limiting hole until the limiting rod is inserted into the limiting hole.

[0010] Furthermore, the protrusion has a first sliding groove and a second sliding groove, which are connected. The limiting rod is slidably connected to the first sliding groove, and a first stop is fixedly connected to the limiting rod. The first stop is slidably connected in the second sliding groove to limit the sliding stroke of the limiting rod.

[0011] Furthermore, a threaded groove is provided on the protrusion, which is connected to the second sliding groove. A screw is screwed onto the threaded groove, and the screw is rotatably connected to the first stop. A turntable is fixedly connected to the end of the screw away from the first stop. By rotating the turntable, the limiting rod and the first stop slide along the first and second sliding grooves.

[0012] Furthermore, the connecting pipe is provided with a storage groove, which is connected to the threaded groove, and the turntable can be stored in the storage groove.

[0013] Furthermore, the turntable is provided with a pressing chamber, an air supply hole, and a third sliding groove. The pressing chamber and the third sliding groove are connected through the air supply hole. A pressing block is slidably connected to the pressing chamber, and a second stop block is slidably connected to the third sliding groove. A rotating rod is fixedly connected to the second stop block. When the turntable needs to be rotated, the pressing block is pressed, so that the gas in the pressing chamber is delivered to the third sliding groove through the air supply hole, causing the second stop block and the rotating rod to slide out of the third sliding groove until the rotating rod slides out of the turntable, so that the turntable can be rotated by the rotating rod.

[0014] Furthermore, a spring is provided inside the pressing chamber, with both ends of the spring fixedly connected to the pressing chamber and the pressing block, respectively.

[0015] Furthermore, a fourth slide groove is provided on the turntable, which is connected to the third slide groove, and the rotating rod is slidably connected to the fourth slide groove.

[0016] This utility model has the following advantages: The connection steps of this anti-leakage structure are relatively simple. Compared with traditional flange connections and other methods that require tightening multiple bolts, it can significantly improve the installation speed. Moreover, by using the insertion of the limiting hole and the limiting component, it provides a firm and reliable circumferential and axial fixation, ensuring that the connection point will not accidentally come off or be displaced after locking, thus enhancing the sealing stability. At the same time, the limiting function is integrated into the insertion ring and the pipe groove, eliminating the need for additional large connecting parts and saving installation space, making it especially suitable for locations with limited space. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the connection structure of the two connecting pipes of this utility model; Figure 2 This is a schematic diagram of the structure of the pipe groove and the limiting component of this utility model; Figure 3 This utility model Figure 1 Enlarged structural diagram at point A; Figure 4 This utility model Figure 2 Enlarged structural diagram at point B; Figure 5 This utility model Figure 2 Enlarged structural diagram at point C; The markings in the diagram are as follows: 1. Connecting pipe; 11. Receiving groove; 2. Insertion ring; 21. Limiting groove; 211. Axis segment; 212. Contour segment; 22. Limiting hole; 3. Pipe opening groove; 32. Protrusion; 33. Second slide groove; 34. First slide groove; 35. Threaded groove; 36. Screw; 4. Sealing gasket; 5. Limiting assembly; 51. Limiting rod; 52. First stop block; 6. Turntable; 61. Rotating rod; 62. Second stop block; 63. Third slide groove; 64. Fourth slide groove; 65. Air outlet; 66. Pressing chamber; 67. Pressing block; 68. Spring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0020] The following is a reference to the appendix. Figure 1 To be continued Figure 5 This utility model describes a leak-proof structure for building water supply and drainage.

[0021] Currently, when connecting existing building water supply and drainage system pipes, workers generally use adhesive connectors. However, adhesive bonding requires high levels of skill from workers and high-quality adhesives. Furthermore, it prevents quick assembly and disassembly, thus reducing the efficiency of water supply and drainage construction.

[0022] Therefore, the water supply and drainage anti-seepage structure of this building includes a plug ring 2 connected to the connecting pipe 1. The end of the connecting pipe 1 away from the plug ring 2 is provided with a pipe opening groove 3. The plug ring 2 can be plugged into the pipe opening groove 3 of the adjacent connecting pipe 1, so that the two adjacent connecting pipes 1 can slide relative to each other. A limiting component 5 is provided on the pipe opening groove 3. The limiting component 5 can slide relative to the pipe opening groove 3. A limiting hole 22 is provided on the plug ring 2. After the plug ring 2 is in contact with the side wall of the pipe opening groove 3 of the adjacent connecting pipe 1, any connecting pipe 1 is rotated until the limiting component 5 and the limiting hole 22 are on the same straight line. Then the limiting component 5 slides towards the limiting hole 22 until the limiting component 5 is plugged into the limiting hole 22.

[0023] The connection steps of this leak-proof structure are relatively simple. Compared with traditional flange connections that require tightening multiple bolts, it can significantly improve the installation speed. Furthermore, the insertion of the limiting hole 22 and the limiting component 5 provides a firm and reliable circumferential and axial fixation, ensuring that the connection point will not accidentally come loose or shift after locking, thus enhancing the sealing stability. At the same time, the limiting function is integrated into the insertion ring 2 and the pipe groove 3, eliminating the need for additional large connectors and saving installation space, making it especially suitable for locations with limited space.

[0024] A protrusion 32 is fixedly connected to the pipe opening groove 3. A limiting groove 21 is formed on the insertion ring 2. The opening of the limiting groove 21 passes through the insertion ring 2. The insertion ring 2 slides along the protrusion 32 on the adjacent connecting pipe 1 pipe opening groove 3 through the limiting groove 21. Specifically, the limiting component 5 is provided on the protrusion 32, and the limiting hole 22 is formed at the end of the limiting groove 21. Thus, the limiting groove 21 provides a precise guiding path for the sliding of the protrusion 32, ensuring that the insertion ring 2 always moves along the predetermined trajectory during insertion, automatically aligning the connecting parts, reducing installation deviation, and improving connection. Precision and reliability are ensured, and the limiting groove 21 itself is a positioning structure. The protrusion 32 enters the limiting groove 21 and slides to the end of the limiting groove 21, which not only completes the initial insertion, but also provides the starting position for the subsequent rotation locking action. At the same time, during the insertion process, the sliding cooperation between the protrusion 32 and the limiting groove 21 provides radial support, which increases the initial stability of the connection and the ability to resist bending. Furthermore, the guiding function and the final locking hole function are integrated into a limiting groove 21, which facilitates the insertion of the limiting component 5 into the limiting groove 21 and improves the installation efficiency.

[0025] The limiting groove 21 includes an axial segment 211 and a contour segment 212. The axial segment 211 is connected to the contour segment 212. When the insertion ring 2 is inserted into the pipe opening groove 3 of the adjacent connecting pipe 1, the protrusion 32 slides along the axial segment 211. When the insertion ring 2 is in contact with the side wall of the pipe opening groove 3 of the adjacent connecting pipe 1, the protrusion 32 is located at the intersection of the axial segment 211 and the contour segment 212. When any connecting pipe 1 is rotated, the protrusion 32 slides along the contour segment 212. The limiting hole 22 is located at the end of the contour segment 212. When the protrusion 32 slides to the end of the contour segment 212, the limiting component 5 can be inserted into the limiting hole 22. Specifically, the axial segment 211 is a straight groove along the insertion ring 2, and the contour segment 212 is an arc groove along the arc contour of the insertion ring 2.

[0026] By setting the axial segment 211 and the contour segment 212, the two key stages of the connection action are clearly distinguished. In the insertion stage, when the protrusion 32 enters the insertion stage along the axial segment 211, the focus is on pulling the connecting tube 1 closer and aligning it with a linear motion to ensure a clear force direction and facilitate the application of insertion force. In the locking stage, when the protrusion 32 rotates along the contour segment 212, the focus is on aligning the limiting component 5 with the limiting hole 22 and preparing for locking. The arc-shaped path naturally guides the rotation, and the protrusion 32 must slide to the intersection of the axial segment 211 and the contour segment 212 before entering the contour segment 212 to complete the rotation. This provides a mechanical foolproof mechanism—rotation only becomes smooth when fully inserted, i.e., when the protrusion 32 is located at the intersection of the axial segment 211 and the contour segment 212. Simultaneously, the contour segment 212 precisely defines the rotation path and angle, ensuring that the limiting component 5 can ultimately and accurately align with the limiting hole 22.

[0027] The limiting component 5 includes a limiting rod 51, which can slide along the protrusion 32. When the protrusion 32 slides along the limiting groove 21, the limiting rod 51 can be completely retracted within the protrusion 32 and does not protrude from it. It is housed by the protrusion 32, preventing accidental scraping or obstruction of the relative movement of the pipeline during the sliding compensation stage, thus ensuring smooth compensation function. When the limiting rod 51 and the limiting hole 22 are on the same straight line, the limiting rod 51 slides towards the limiting hole 22 until it is inserted into the limiting hole 22, thereby effectively preventing relative sliding of the pipeline in the axial direction and achieving a final rigid connection. It also provides circumferential constraint.

[0028] The protrusion 32 has a first sliding groove 34 and a second sliding groove 33, which are connected. The limiting rod 51 is slidably connected to the first sliding groove 34, and a first stop 52 is fixedly connected to the limiting rod 51. The first stop 52 is slidably connected in the second sliding groove 33 to limit the sliding stroke of the limiting rod 51 and prevent the limiting rod 51 from being pulled out of the protrusion 32 and falling off. Preferably, the length and width of the first stop 52 are greater than the diameter of the limiting rod 51, and the length and width of the second sliding groove 33 are greater than the diameter of the first sliding groove 34. In other embodiments of this utility model, the length or width of the first stop 52 can be greater than the diameter of the limiting rod 51, and the length or width of the second sliding groove 33 can be greater than the diameter of the first sliding groove 34.

[0029] Preferably, the first stop 52 is rectangular, and the shape of the second slide groove 33 matches the shape of the first stop 52. In other embodiments of this utility model, the first stop 52 can also be other shapes, such as triangles, pentagons, etc., as long as the first stop 52 cannot be rotated.

[0030] Furthermore, a threaded groove 35 is provided on the protrusion 32, which communicates with the second sliding groove 33. The threaded groove 35 is located at the end of the second sliding groove 33 away from the first sliding groove 34. A screw 36 is screwed onto the threaded groove 35, and the screw 36 is rotatably connected to the first stop block 52. A turntable 6 is fixedly connected to the end of the screw 36 away from the first stop block 52. By rotating the turntable 6, the limiting rod 51 and the first stop block 52 slide along the first sliding groove 34 and the second sliding groove 33. Specifically, a locking block is fixedly connected to the screw 36, and the diameter of the locking block is larger than that of the screw 36. A locking groove is provided on the first stop block 52, and the locking groove is rotatably connected to the locking block. When the locking block moves along the axis, the locking groove moves synchronously. A connecting groove is provided on the locking groove, and the diameter of the connecting groove is smaller than that of the locking groove. The connecting groove is rotatably connected to the screw 36, so that when the screw 36 is rotated, the limiting rod 51 and the first stop block 52 can only slide and cannot rotate.

[0031] The screw 36, with its high transmission ratio design, allows the operator to generate sufficient thrust / pull force to drive the limit rod 51 to overcome friction and complete the locking or unlocking action with only a small force when rotating the turntable 6. This is labor-saving and efficient. Furthermore, the threaded drive allows for fine-tuning of the extension position of the limit rod 51. Once locked in place, the self-locking property of the thread effectively prevents the limit rod 51 from accidentally retracting due to vibration or other reasons, ensuring high reliability of the locking mechanism. No additional tightening is required.

[0032] The connecting pipe 1 is provided with a storage groove 11, which is connected to the threaded groove 35. The turntable 6 can be stored in the storage groove 11. When the limiting component 5 is inserted into the limiting hole 22, the turntable 6 fits against the inner wall of the storage groove 11, so that the entire turntable 6 can be completely hidden in the storage groove 11 in the stored state, providing the highest level of protection. It is almost impossible to be accidentally bumped or touched, and non-professionals cannot easily rotate the turntable 6, ensuring the safety of the interconnected connecting pipes 1 during use, and avoiding the turntable 6 being scratched and deformed or damaged during installation, maintenance or relative sliding of pipes in narrow spaces.

[0033] The turntable 6 has a pressing chamber 66, an air supply hole 65, and a third slide groove 63. The pressing chamber 66 and the third slide groove 63 are connected through the air supply hole 65. A pressing block 67 is slidably connected to the pressing chamber 66, and a second stop block 62 is slidably connected to the third slide groove 63. A rotating rod 61 is fixedly connected to the second stop block 62. When the turntable 6 needs to be rotated, the pressing block 67 is pressed, so that the gas in the pressing chamber 66 is transported to the third slide groove 63 through the air supply hole 65. This causes the second stop block 62 and the rotating rod 61 to slide out of the third slide groove 63 until the rotating rod 61 slides out of the turntable 6, so that the turntable 6 can be rotated by the rotating rod 61.

[0034] In its stored state, the lever 61 can be completely hidden within the outline of the turntable 6, providing the highest level of protection and making it virtually impossible to be accidentally bumped or touched. The lever 61 is only temporarily popped out as a handle by pressing when operation is required, and it is reset after operation is completed, thus resolving the contradiction between hiding and operation.

[0035] A spring 68 is provided inside the pressing chamber 66. The two ends of the spring 68 are fixedly connected to the pressing chamber 66 and the pressing block 67, respectively. The spring 68 provides the key rebound force. When the pressing block 67 is released, the spring 68 automatically pushes it back to the initial position. During the reset process of the pressing block 67, the release of the spring 68 will create a certain negative pressure in the gas chamber or rely on its own sealing effect to make the gas flow back through the gas outlet 65, which will help the second stop 62 and the rotating rod 61 to automatically retract to the storage position and complete the self-reset.

[0036] The turntable 6 has a fourth slide groove 64, which is connected to the third slide groove 63. The rotating rod 61 is slidably connected to the fourth slide groove 64.

[0037] Meanwhile, existing building water supply and drainage system pipes are prone to leakage when put into use after connection, which affects the sealing of the pipes.

[0038] Therefore, this anti-leakage structure also includes a sealing gasket 4, which is located on the outer wall of the plug ring 2 and the inner wall of the pipe groove 3. When the two connecting pipes 1 are plugged in, the sealing gasket 4 at the connection between the plug ring 2 and the connecting pipe 1 will be squeezed and tightly fitted to the outside of the joint of the plug ring 2, effectively preventing water from seeping out from the outer interface of the connecting pipe 1, forming the first layer of waterproof barrier. At the same time, the sealing gasket 4 will prevent water from seeping out from the gap between the pipe groove 3 and other internal components of the plug ring 2, thereby greatly improving the waterproof performance of the pipeline. The double protection effectively reduces the risk of leakage. Even if one layer of seal is partially damaged or fails, the other layer of seal can still continue to play a waterproof role, ensuring the normal operation of the water supply and drainage system. It also enhances the durability of the system, reduces the need for frequent maintenance and replacement of parts due to leakage problems, and extends the service life of the entire water supply and drainage system.

[0039] In environments such as chemical plants, pipelines may be filled with high-pressure or highly corrosive liquids, placing higher demands on sealing systems. In such cases, even minor leaks can lead to serious safety hazards or environmental pollution. Traditional static sealing structures may gradually fail under prolonged exposure to high pressure or corrosive liquids, making it impossible to detect and address these potential leaks in a timely manner.

[0040] Therefore, a miniature pressure sensor is installed on the sealing gasket 4 to monitor pressure changes in the sealing area in real time; a conductivity sensor is installed on the sealing gasket 4 to detect liquid infiltration; a microcontroller is installed outside the connecting pipe 1 to process sensor data and control system operation. The microcontroller is electrically connected to a wireless communication module to transmit monitoring data to the central control system; an expansion sealing gasket is added to each sealing gasket 4, and its expansion degree is controlled by the microcontroller. A miniature pump is connected to the expansion sealing gasket to control its expansion and contraction. Under normal conditions, the system continuously monitors the pressure in the sealing area and whether liquid infiltration occurs. If abnormal pressure or liquid infiltration is detected, the microcontroller will immediately activate the expansion sealing gasket, and the miniature pump will inject sealing fluid into the expansion sealing gasket, causing it to expand and fill any possible tiny gaps, thereby dynamically strengthening the sealing effect. At the same time, the system sends an alarm to the central control system through the wireless communication module to remind maintenance personnel to check and handle the situation in a timely manner. If the situation is under control, the system can use the miniature pump to extract the sealing fluid, restoring the expansion sealing gasket to its original state and creating conditions for subsequent maintenance.

[0041] This allows for real-time monitoring of the sealing status and immediate remedial measures when an abnormality is detected, greatly improving the safety and reliability of pipelines transporting high-pressure or corrosive liquids. It can not only detect potential leakage risks in a timely manner, but also prevent leakage by dynamically adjusting the sealing strength, providing a strong guarantee for the safe operation of industrial parks.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A leakage preventing structure for building water supply and drainage, characterized by, The device includes a plug ring connected to a connecting pipe. The end of the connecting pipe away from the plug ring has a pipe opening groove. The plug ring can be inserted into the pipe opening groove of an adjacent connecting pipe, allowing the two adjacent connecting pipes to slide relative to each other. A limiting component is provided on the pipe opening groove, which can slide relative to the pipe opening groove. A limiting hole is provided on the plug ring. After the plug ring is in contact with the side wall of the pipe opening groove of the adjacent connecting pipe, any connecting pipe can be rotated until the limiting component and the limiting hole are on the same straight line. Then the limiting component slides towards the limiting hole until the limiting component is inserted into the limiting hole. Sealing gaskets are provided on the outer wall of the plug ring and the inner wall of the pipe opening groove. After the two connecting pipes are inserted, a double waterproof barrier is formed by the two sealing gaskets.

2. The anti-leak structure for building water supply and drainage according to claim 1, characterized by, A protrusion is fixedly connected to the pipe opening groove, a limiting component is set on the protrusion, a limiting groove is opened on the plug ring, the opening of the limiting groove passes through the plug ring, and a limiting hole is opened at the end of the limiting groove. The plug ring slides along the protrusion on the adjacent connecting pipe opening groove through the limiting groove.

3. The anti-leak structure for building water supply and drainage according to claim 2, characterized by, The limiting groove includes an axial segment and a contour segment. The axial segment is connected to the contour segment. When the insertion ring is inserted into the slot of the adjacent connecting pipe, the protrusion slides along the axial segment. When the insertion ring is in contact with the side wall of the slot of the adjacent connecting pipe, the protrusion is located at the intersection of the axial segment and the contour segment. When any connecting pipe is rotated, the protrusion slides along the contour segment. The limiting hole is located at the end of the contour segment. When the protrusion slides to the end of the contour segment, the limiting component can be inserted into the limiting hole.

4. The anti-leak structure for building water supply and drainage according to claim 2, characterized by, The limiting assembly includes a limiting rod that can slide along the protrusion. When the protrusion slides along the limiting groove, the limiting rod is located inside the protrusion. When the limiting rod and the limiting hole are on the same straight line, the limiting rod slides toward the limiting hole until the limiting rod is inserted into the limiting hole.

5. The anti-leak structure for building water supply and drainage according to claim 4, characterized in that, The protrusion has a first sliding groove and a second sliding groove, which are connected. The limiting rod is slidably connected to the first sliding groove, and a first stop is fixedly connected to the limiting rod. The first stop is slidably connected in the second sliding groove to limit the sliding stroke of the limiting rod.

6. The anti-leak structure for building water supply and drainage according to claim 5, characterized by The protrusion has a threaded groove that communicates with the second slide groove. A screw is screwed onto the threaded groove and is rotatably connected to the first stop. A turntable is fixedly connected to the end of the screw away from the first stop. By rotating the turntable, the limiting rod and the first stop slide along the first slide groove and the second slide groove.

7. The anti-leak structure for building water supply and drainage according to claim 6, characterized by, The connecting pipe is equipped with a storage groove, which is connected to the threaded groove, and the turntable can be stored in the storage groove.

8. The anti-leak structure for building water supply and drainage according to claim 6, characterized by, The turntable has a pressing chamber, an air supply hole, and a third slide groove. The pressing chamber and the third slide groove are connected through the air supply hole. A pressing block is slidably connected to the pressing chamber, and a second stop block is slidably connected to the third slide groove. A rotating rod is fixedly connected to the second stop block. When the turntable needs to be rotated, the pressing block is pressed, so that the gas in the pressing chamber is delivered to the third slide groove through the air supply hole. This causes the second stop block and the rotating rod to slide out of the third slide groove until the rotating rod slides out of the turntable, so that the turntable can be rotated by the rotating rod.

9. The anti-leak structure for building water supply and drainage according to claim 8, characterized by, A spring is installed inside the pressing chamber, and the two ends of the spring are fixedly connected to the pressing chamber and the pressing block, respectively.

10. The anti-leak structure for building water supply and drainage according to claim 8, characterized by The turntable has a fourth slide groove, which is connected to the third slide groove, and the rotating rod is slidably connected to the fourth slide groove.

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