A leak-proof device for a sewer pipe joint
Patent Information
- Application Number
- CN202522277537.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-28
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-10-28
AI Technical Summary
现有排水管道接口通常采用单一规格的插接结构，配合密封圈实现密封，但存在以下问题：一是适配性差，难以满足不同内径管道的对接需求；二是密封结构单一，长期使用后易因管道振动、热胀冷缩等导致密封圈老化或松动，造成渗漏；三是缺乏有效的固定结构，接口处易因外力或水流冲击发生位移，进一步加剧渗漏风险
[0011]通过台阶状设置的多段插接段配合对应阻尼片，可适配不同规格的外部管道并形成多层密封，同时利用顶盖外侧环形阵列的弹性杆对对接管道形成稳定夹持，通过 “密封+ 固定” 双重保障，有效解决排水管道接口因密封不良或连接松动导致的渗漏问题，显著提升接口的防漏性能和连接稳定性，且结构简单、适配性强，便于安装与维护。
Smart Images
Figure CN224718377U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of pipe connections, and in particular to a leak-proof device for drainage pipe interfaces. Background Technology
[0002] Drainage pipes are widely used in construction and municipal engineering, and the sealing and stability of their joints directly affect the normal operation of the drainage system. Existing drainage pipe joints typically use a single-specification plug-in structure with a sealing ring for sealing, but this has the following problems: First, poor adaptability, making it difficult to meet the docking requirements of pipes with different inner diameters; second, the simple sealing structure, after long-term use, is prone to aging or loosening of the sealing ring due to pipe vibration, thermal expansion and contraction, etc., causing leakage; third, the lack of an effective fixing structure, the joint is prone to displacement due to external forces or water flow impact, further increasing the risk of leakage. Therefore, to solve the above problems, this application provides a drainage pipe joint leak-proof device. Utility Model Content
[0003] To address the aforementioned problems, this application provides a leak-proof device for drainage pipe interfaces.
[0004] This application provides a leak-proof device for a drainage pipe interface, characterized in that it includes a plug pipe, which is provided in a stepped manner with a first plug section, a second plug section, and a third plug section; a damping plate is provided on the outer wall of the first plug section, a damping plate is provided on the outer wall of the second plug section, and a damping plate is provided on the outer wall of the third plug section; a connecting pipe is provided at the top of the plug pipe, and a top cover is provided at the connection position between the connecting pipe and the outside; a plurality of elastic rods are arranged in a ring on the outer side of the top cover, and the elastic rods include an inward section, an arc-shaped section, and an outward-curving section.
[0005] Preferably, the outer wall of the connecting pipe is provided with protruding ridges.
[0006] Preferably, the number of elastic rods is not less than three.
[0007] Preferably, the first damping plate, the second damping plate, and the third damping plate are all made of elastic sealing material.
[0008] Preferably, the top cover and the connecting pipe are integrally formed.
[0009] Preferably, the inward-curving section, the arc-shaped section, and the outward-curving section of the elastic rod are integrally formed elastic metal rods.
[0010] In summary, this application includes the following beneficial technical effects:
[0011] The stepped multi-segment connectors, combined with corresponding damping plates, can accommodate external pipes of different specifications and form a multi-layer seal. At the same time, the elastic rods in the ring array on the outside of the top cover provide a stable clamping effect on the connected pipes. Through the dual protection of "sealing + fixing", the leakage problem caused by poor sealing or loose connection of drainage pipe interfaces is effectively solved, significantly improving the leakage prevention performance and connection stability of the interface. Moreover, the structure is simple, highly adaptable, and easy to install and maintain. Attached Figure Description
[0012] Figure 1 It is the isometric drawing in Embodiment 1 of this application;
[0013] Figure 2 This is the bottom-view isometric drawing from Embodiment 1 of this application;
[0014] Figure 3 This is a longitudinal sectional view of Embodiment 1 of this application.
[0015] Explanation of reference numerals in the attached drawings: 1. Connecting pipe; 11. Connecting section one; 12. Connecting section two; 13. Connecting section three; 21. Damping plate one; 22. Damping plate two; 23. Damping plate three; 3. Connecting pipe; 31. Raised ridge; 4. Top cover; 5. Elastic rod; 51. Inward section; 52. Arc-shaped section; 53. Outward-curving section. Detailed Implementation
[0016] The following is in conjunction with the appendix Figure 1 - Figure 3 This application will be described in further detail.
[0017] Example 1:
[0018] A leak-proof device for drainage pipe joints, as described in the following example. Figure 1 - Figure 3 It includes a plug pipe 1, which has a stepped structure. From top to bottom, it is provided with plug section 11, plug section 2 12 and plug section 3 13. The outer diameter of the three plug sections decreases in sequence, forming a stepped distribution, which can be adapted to external pipes with different inner diameters and realize multi-level plugging.
[0019] Damping plate 21 is fixedly installed on the outer wall of connector section 11, damping plate 22 is fixedly installed on the outer wall of connector section 12, and damping plate 23 is fixedly installed on the outer wall of connector section 13. Damping plates 21, 22, and 23 are all made of elastic sealing materials such as rubber, with a thickness of 2-5mm, and their outer walls are arc-shaped protrusions. When connector 1 is inserted into an external pipe, damping plates 21, 22, and 23 fit tightly against the inner wall of the corresponding external pipe, filling the gap through elastic deformation to achieve a sealing and leak-proof effect.
[0020] The top end of the insertion tube 1 is integrally formed with a connecting tube 3. The outer diameter of the connecting tube 3 is the same as the outer diameter of the top end of the insertion tube 1. The outer wall of the connecting tube 3 is provided with an annular protrusion 31. The cross section of the protrusion 31 is triangular, which can enhance the friction between the connecting tube 3 and the external connecting pipe and improve the connection stability.
[0021] A top cover 4 is provided at the junction of the connecting pipe 3 and the external pipe. The top cover 4 has a ring structure, and its inner wall is fixedly connected to the outer wall of the connecting pipe 3. The top cover 4 and the connecting pipe 3 are integrally formed to ensure the connection strength. Several elastic rods 5 are distributed in a ring array along the outer side of the top cover 4. The number of elastic rods 5 is preferably 4, which are evenly distributed on the outer periphery of the top cover 4.
[0022] Each elastic rod 5 comprises an inwardly tapered section 51, an arc-shaped section 52, and an outwardly curved section 53 connected in sequence. These three sections are integrally formed elastic metal rods (such as those made of spring steel). The inwardly tapered section 51 is perpendicularly connected to the outer wall of the top cover 4, tilting inwards at a 5-10° angle. The arc-shaped section 52 extends inwards from the end of the inwardly tapered section 51, its curvature matching the curvature of the outer wall of the external connecting pipe. The outwardly curved section 53 curves outwards from the end of the arc-shaped section 52, forming a guide structure that facilitates the insertion of the external pipe. When the external pipe connects to the connecting pipe 3, the arc-shaped section 52 of the elastic rod 5 adheres tightly to the outer wall of the external pipe under its own elasticity. The ring-shaped clamping force ensures stable positioning of both components, preventing loosening and leakage due to vibration or displacement.
[0023] The foregoing description of an exemplary embodiment of a drainage pipe interface leak-proof device provided by this disclosure refers to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.
Claims
1. A leak-proof device for drainage pipe joints, characterized in that, The device includes a connector (1), which is provided with a stepped connector section 1 (11), connector section 2 (12) and connector section 3 (13); a damping plate 1 (21) is provided on the outer wall of connector section 1 (11), a damping plate 2 (22) is provided on the outer wall of connector section 2 (12), and a damping plate 3 (23) is provided on the outer wall of connector section 3 (13); a connecting pipe (3) is provided at the top of connector (1), and a top cover (4) is provided at the connection position between the connecting pipe (3) and the outside; a number of elastic rods (5) are arranged in a ring on the outer side of the top cover (4), and the elastic rods (5) include an inward section (51), an arc section (52) and an outward section (53).
2. The anti-leakage device for drainage pipe interfaces according to claim 1, characterized in that: The outer wall of the connecting pipe (3) is provided with a protruding rib (31).
3. The anti-leakage device for drainage pipe interfaces according to claim 1, characterized in that: The number of elastic rods (5) shall not be less than three.
4. The anti-leakage device for drainage pipe interfaces according to claim 1, characterized in that: The damping sheet one (21), damping sheet two (22) and damping sheet three (23) are all made of elastic sealing material.
5. The anti-leakage device for drainage pipe interfaces according to claim 1, characterized in that: The top cover (4) and the connecting pipe (3) are integrally formed.
6. The anti-leakage device for drainage pipe interfaces according to claim 1, characterized in that: The inward-curving section (51), the arc-shaped section (52), and the outward-curving section (53) of the elastic rod (5) are integrally formed elastic metal rods.