Water leakage prevention drainage pipeline

Abstract

The utility model relates to the technical field of drainage pipes, and discloses a water leakage prevention drainage pipeline which comprises a U-shaped drainage pipe, a maintenance pipe is integrally constructed at the U-shaped turning position of the U-shaped drainage pipe, the lower portion of the maintenance pipe is in threaded connection with a blocking cover, and a first annular sealing gasket is arranged at the joint of the bottom face of an inner cavity of the blocking cover and the bottom end of the maintenance pipe. A first annular step is constructed outside the upper side of the overhaul pipe, a second annular sealing gasket is arranged at the joint of the bottom of the first annular step and the top end of the blocking cover, the first annular step is sleeved with a torsional spring, a second annular step is constructed outside the upper side of the first annular step, and an upper check block is integrally constructed at the step position between the first annular step and the second annular step. An outer convex ring is integrally constructed on the outer wall of the upper part of the maintenance pipe; and a lower baffle block is integrally constructed at the step of the outer convex ring and the maintenance pipe. According to the utility model, double sealing is realized, the sealing effect is better, and the anti-loosening capability of the blanking cap is improved by utilizing the torsion spring.

Description

Technical Field

[0001] This utility model belongs to the field of drainage pipe technology, specifically a leak-proof drainage pipe. Background Technology

[0002] In building drainage pipes, U-shaped drain pipes are used to prevent odors and insects. Water is stored at the U-shaped bend of the U-shaped drain pipe to form a water seal, preventing odors and insects from the main drain pipe from entering the room through the U-shaped drain pipe.

[0003] Existing U-shaped drain pipes have inspection ports at the U-bends for easy maintenance, which are sealed with plugs. During maintenance, the plugs can be easily opened to access the pipe. However, in actual use, the applicant has found that while the plugs are typically threaded onto the inspection ports and sealed with a gasket at the connection, this single-seal structure is prone to leakage. Furthermore, water flow vibrations can cause the plugs to loosen and leak. To address these issues, a leak-proof drainage pipe is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a leak-proof drainage pipe in order to solve the problems mentioned above.

[0005] The technical solution adopted by this utility model is as follows: A leak-proof drainage pipe includes a U-shaped drainage pipe. An inspection pipe is integrally constructed at the U-shaped bend of the U-shape. A plug is threadedly connected to the lower part of the inspection pipe. An annular sealing gasket is provided at the connection between the bottom surface of the inner cavity of the plug and the bottom end of the inspection pipe. An annular step is constructed on the upper outer side of the inspection pipe. An annular sealing gasket is provided at the connection between the bottom of the annular step and the top end of the plug.

[0006] A torsion spring is fitted around the outside of the first annular step. A second annular step is constructed on the upper outer side of the first annular step. An upper stop block is integrally constructed at the step between the first annular step and the second annular step. The upper end of the torsion spring abuts against the upper stop block. An outer protruding ring is integrally constructed on the upper outer wall of the inspection tube. A lower stop block is integrally constructed between the outer protruding ring and the step of the inspection tube. The lower part of the torsion spring is fitted around the upper part of the plug, and the lower end of the torsion spring abuts against the lower stop block.

[0007] In a preferred embodiment, an annular groove is provided at the bottom of the inner cavity of the plug, and the annular sealing gasket is snapped into the annular groove.

[0008] In a preferred embodiment, the annular sealing gasket is sleeved on the inspection pipe.

[0009] In a preferred embodiment, the lower outer wall of the inspection tube is provided with external threads, and the inner wall of the plug is provided with internal threads that are adapted to the external threads.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0011] 1. In this utility model, an annular sealing gasket is provided at the connection between the bottom surface of the inner cavity of the plug and the bottom end of the inspection pipe to form a first seal, and an annular sealing gasket is provided at the connection between the bottom of the annular step and the top of the plug to form a second seal. Compared with the existing single seal, the sealing effect is better and the leakage prevention performance is improved.

[0012] 2. In this utility model, after the plug is connected to the inspection pipe, the torsion spring applies downward pressure to the plug, thereby increasing the friction between the threaded connections. At the same time, the torsion spring provides the plug with an anti-reverse torque, thus preventing the plug from twisting. The entire structure can improve the plug's anti-loosening ability, thereby minimizing the problem of water leakage caused by the plug loosening, and further improving the water leakage prevention capability. Attached Figure Description

[0013] Figure 1 This is a simplified schematic diagram of the front view of the present utility model;

[0014] Figure 2 This is a simplified schematic diagram of the exploded three-dimensional structure of this utility model;

[0015] Figure 3 This is a simplified cross-sectional diagram of the inspection pipe of this utility model;

[0016] Figure 4 This is a simplified cross-sectional diagram of the plug structure of this utility model.

[0017] The markings in the diagram are: 1-U-shaped drain pipe, 2-inspection pipe, 3-plug, 4-ring gasket one, 5-ring step one, 6-ring gasket two, 7-torsion spring, 8-ring step two, 9-upper stop block, 10-outer convex ring, 11-lower stop block, 12-ring groove, 13-external thread, 14-internal thread. 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 in conjunction with the embodiments of this utility model. 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] The following will combine Figures 1-4 A detailed description of a leak-proof drainage pipe according to an embodiment of the present utility model is provided. Example:

[0020] refer to Figure 1 As shown in the figure, this utility model provides a leak-proof drainage pipe, for reference... Figures 1 to 4 As shown, the structure includes a U-shaped drain pipe 1, with an integrally formed inspection pipe 2 at the U-shaped bend of the U-shaped drain pipe 1. A plug 3 is threadedly connected to the lower part of the inspection pipe 2. An annular sealing gasket 4 is provided at the connection between the bottom surface of the inner cavity of the plug 3 and the bottom end of the inspection pipe 2. An annular step 5 is constructed on the upper outer side of the inspection pipe 2. An annular sealing gasket 6 is provided at the connection between the bottom of the annular step 5 and the top of the plug 3. The annular sealing gasket 6 is fitted onto the inspection pipe 2. In this structure, the annular sealing gasket 4 at the connection between the bottom surface of the inner cavity of the plug 3 and the bottom end of the inspection pipe 2 forms the first seal, while the annular sealing gasket 6 at the connection between the bottom of the annular step 5 and the top of the plug 3 forms the second seal. Compared with the existing single seal, the sealing effect is better and the leakage prevention performance is improved.

[0021] refer to Figures 1 to 4 As shown, an annular groove 12 is provided at the bottom of the inner cavity of the plug 3, and the annular sealing gasket 4 is engaged in the annular groove 12. In this structure, the annular groove 12 is used to position the annular sealing gasket 4.

[0022] refer to Figures 1 to 4 As shown, the lower outer wall of the inspection tube 2 has an external thread 13, and the inner wall of the plug 3 has an internal thread 14 that matches the external thread 13. This structure utilizes the external thread 13 of the inspection tube 2 and the internal thread 14 of the plug 3 to connect, thereby realizing the threaded connection between the plug 3 and the inspection tube 2.

[0023] refer to Figures 1 to 4 As shown, a torsion spring 7 is fitted around the outside of the annular step 5. An annular step 2 8 is constructed on the upper outer side of the annular step 5. An upper stop 9 is integrally constructed at the step between the annular step 5 and the annular step 2 8. The upper end of the torsion spring 7 abuts against the upper stop 9. An outer protruding ring 10 is integrally constructed on the upper outer wall of the inspection pipe 2. A lower stop 11 is integrally constructed between the outer protruding ring 10 and the step of the inspection pipe 2. The lower part of the torsion spring 7 is fitted around the upper part of the plug 3, and the lower end of the torsion spring 7 abuts against the lower stop 11. When the plug 3 and the inspection pipe 2 are connected in place, the torsion spring 7 applies downward pressure to the plug 3 by stretching and deforming, thereby increasing the friction between the threaded connections. At the same time, the torsion spring 7 can provide the plug 3 with an anti-reverse torque, thereby preventing the plug 3 from twisting. The entire structure can improve the anti-loosening ability of the plug 3, thereby minimizing the problem of water leakage caused by the loosening of the plug 3, and further improving the anti-leakage ability.

[0024] It should be noted that: there is a compressible gap between two adjacent coils of the torsion spring 7, and the natural length of the torsion spring 7 is greater than the distance between the annular step 8 and the outer convex ring 10 after the plug 3 and the inspection tube 2 are tightened in place. This ensures that the torsion spring 7 can generate elastic force after compression, thereby putting downward pressure on the plug 3. At the same time, after the plug 3 and the inspection tube 2 are tightened in place, the torsion spring 7 is compressed and there is still a compressible gap between two adjacent coils. This structure allows the torsion spring 7 to be compressed upwards later, so that the lower end of the torsion spring 7 is higher than the lower stop 11, thereby facilitating the disassembly of the plug 3.

[0025] The implementation principle of a leak-proof drainage pipe according to an embodiment of this application is as follows: When in use, an annular sealing gasket 4 is provided at the connection between the bottom surface of the inner cavity of the plug 3 and the bottom end of the inspection pipe 2 to form a first seal, and an annular sealing gasket 6 is provided at the connection between the bottom of the annular step 5 and the top end of the plug 3 to form a second seal. Compared with the existing single seal, the sealing effect is better and the leak-proof performance is improved.

[0026] Once the plug 3 is connected to the inspection pipe 2, the torsion spring 7 applies some downward pressure to the plug 3, thereby increasing the friction between the threaded connections. At the same time, the torsion spring 7 provides the plug 3 with an anti-reverse torque, preventing the plug 3 from twisting. The entire structure improves the plug 3's anti-loosening ability, thus minimizing the risk of leakage caused by the plug 3 becoming loose, and further enhancing the leak-proof capability.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A leak-proof drainage pipe, comprising a U-shaped drainage pipe (1), characterized in that: The U-shaped drain pipe (1) has an integrally constructed inspection pipe (2) at the U-shaped bend. The lower part of the inspection pipe (2) is threaded with a plug (3). An annular sealing gasket (4) is provided at the connection between the bottom surface of the inner cavity of the plug (3) and the bottom end of the inspection pipe (2). An annular step (5) is constructed on the upper outer side of the inspection pipe (2). An annular sealing gasket (6) is provided at the connection between the bottom of the annular step (5) and the top end of the plug (3). A torsion spring (7) is fitted around the outside of the first annular step (5). An annular step (8) is constructed on the upper side of the first annular step (5). An upper stop block (9) is integrally constructed at the step between the first annular step (5) and the second annular step (8). The upper end of the torsion spring (7) abuts against the upper stop block (9). An outer protruding ring (10) is integrally constructed on the upper outer wall of the inspection tube (2). A lower stop block (11) is integrally constructed between the outer protruding ring (10) and the step of the inspection tube (2). The lower part of the torsion spring (7) is fitted around the upper part of the plug (3), and the lower end of the torsion spring (7) abuts against the lower stop block (11).

2. The leak-proof drainage pipe as described in claim 1, characterized in that: The bottom of the inner cavity of the plug (3) is provided with an annular groove (12), and the annular sealing gasket (4) is engaged in the annular groove (12).

3. The leak-proof drainage pipe as described in claim 1, characterized in that: The annular sealing gasket (6) is fitted onto the inspection pipe (2).

4. A leak-proof drainage pipe as described in claim 1, characterized in that: The lower outer wall of the inspection tube (2) is constructed with an external thread (13), and the inner wall of the plug (3) is constructed with an internal thread (14) that is adapted to the external thread (13).

Images