Sewage discharge connecting pipe
By using sealing rings and bushing structures in PVC sewage pipes, combined with connecting components, the problems of insufficient pipe connection strength and sealing performance are solved, achieving reliable sealing and quick assembly/disassembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN MIAOTING PIPE IND CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-15
AI Technical Summary
The existing PVC sewage pipes have insufficient connection strength and sealing performance, and are inconvenient to connect and disassemble.
The system employs a sealing ring and bushing structure, combined with connecting components including a first locking sleeve, a second locking sleeve, and a hinge. Through the cooperation of the limiting protrusion and the annular groove, it achieves reliable connection and quick assembly/disassembly of the pipeline.
It improves the sealing and reliability of pipe connections, ensures that the sealing ring does not fall off, and enables rapid connection and disassembly of pipes.
Smart Images

Figure CN224245635U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sewage connection pipe technology, specifically a sewage connection pipe. Background Technology
[0002] PVC sewage pipes are generally connected by plastic threaded joints and sealed with raw rubber tape. This method requires manual tightening of the threads, but it is not known how to tighten them to achieve a seal, and the connection strength is not high.
[0003] The existing announcement number CN114923054B discloses a PVC sewage pipe structure and its connection method, belonging to the field of pipeline engineering. A PVC sewage pipe structure includes an inlet pipe and an outlet pipe, which are connected end-to-end by a connecting component to communicate with each other. The connecting component includes: a male connector, detachably connected to the end of the inlet pipe, having a tapered inner wall; and a female connector, detachably connected to the end of the outlet pipe. The female connector is located inside the male connector and has a tapered outer wall that matches the tapered inner wall. A gap exists between the outer wall and the inner wall of the female connector, the gap including a buffer chamber and a pressurizing chamber that communicate with each other. The buffer chamber is formed by a uniform gap between the tapered inner and outer walls. This structure can enhance the connection strength and sealing strength between pipes, provides tightening reminders for easy installation, and facilitates positive compensation adjustment of connection strength and sealing strength after long-term use.
[0004] Existing technologies have improved the connection and sealing strength between pipelines to a certain extent, but the connection strength still needs to be strengthened to a certain extent. Furthermore, how to achieve rapid disassembly and assembly between pipelines is also a technical problem we need to address. To this end, we propose a sewage connection pipe. Utility Model Content
[0005] The purpose of this utility model is to provide a sewage connection pipe to solve the problems in the prior art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a sewage connection pipe, comprising a first pipe and a second pipe, the first pipe and the second pipe being inserted into each other, a sealing ring being installed on the outer side of one end of the first pipe at the second pipe, a sealing ring being installed on the outer side of one end of the second pipe at the first pipe, a bushing being installed on the outer side of the insertion point of the first pipe and the second pipe, the bushing pressing the sealing ring onto the pipe, and a connecting component being installed at the insertion point of the first pipe and the second pipe, the connecting component being located on the outer side of the bushing.
[0007] Preferably, the second pipe is provided with a plug at one end of the first pipe, and the first pipe is provided with a slot that mates with the plug at one end of the second pipe.
[0008] Preferably, a sealing gasket is installed at the joint between the first pipe and the second pipe.
[0009] Preferably, the first pipe and the second pipe are provided with annular protrusions on both sides of the sealing ring, and a sealing ring mounting groove is formed between the two annular protrusions. The uncompressed diameter of the sealing ring is greater than the depth of the sealing ring mounting groove.
[0010] Preferably, the connecting assembly includes a first locking sleeve, a second locking sleeve, and a hinge. The first locking sleeve and the second locking sleeve are connected by the hinge. A first locking head is installed on the end of the first locking sleeve away from the hinge, and a second locking head that mates with the first locking head is installed on the end of the second locking sleeve away from the hinge. Both the first locking sleeve and the second locking sleeve are semi-circular in shape, and limit protrusions are provided on both sides of the first locking sleeve and both sides of the second locking sleeve. Both the first pipe and the second pipe have annular grooves that mate with the limit protrusions.
[0011] Preferably, both the first locking head and the second locking head include a fixed seat and a pin. The pin is mounted on the fixed seat and has two locking rods installed on it. A locking groove is provided on the pin. The fixed seat is equipped with a spring plate that acts on the locking rods.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. The bushing presses the sealing ring onto the pipe, improving the sealing effect at the connection. The seal is firmly secured by the bushing, preventing it from falling off. A connecting assembly is installed at the joint of the first and second pipes, located outside the bushing. This assembly secures the connection between the pipes and prevents the bushing from detaching from the sealing ring, ensuring reliable connection and a tight seal. A sealing gasket is installed at the joint of the first and second pipes, further enhancing the sealing performance.
[0014] 2. Both the first and second pipes are provided with annular grooves that mate with the limiting protrusions. The matching of the limiting protrusions and annular grooves ensures that the connecting components will not detach from the pipe connection after the first and second locking heads are locked. Attached Figure Description
[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a cross-sectional view of the present invention;
[0018] Figure 3 This is a schematic diagram of the structure of the first and second pipes of this utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the connecting component of this utility model;
[0020] Figure 5 This is a structural schematic diagram of the locking head of this utility model.
[0021] In the diagram: 1. First pipe; 2. Second pipe; 3. Connecting assembly; 4. Bushing; 5. Sealing ring; 6. Annular groove; 7. Plug; 8. Annular protrusion; 9. Sealing ring mounting groove; 31. First locking sleeve; 32. Second locking sleeve; 33. Hinge; 34. Limiting protrusion; 35. First locking head; 36. Second locking head; 361. Fixing seat; 362. Pin; 363. Spring; 364. Locking rod; 365. Locking groove. Detailed Implementation
[0022] 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, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.
[0023] Please see Figure 1-5 In this embodiment of the utility model, a sewage connection pipe includes a first pipe 1 and a second pipe 2, which are interlocked. A sealing ring 5 is installed on the outer side of one end of the first pipe 1 and the outer side of one end of the second pipe 2. A bushing 4 is installed on the outer side of the interlocking point of the first pipe 1 and the second pipe 2. The bushing 4 presses the sealing ring 5 onto the pipe. The sealing ring 5 can improve the sealing effect at the connection, and the sealing element is pressed tightly by the bushing 4, so it will not fall off. A connecting component 3 is installed at the interlocking point of the first pipe 1 and the second pipe 2. The connecting component 3 is located on the outer side of the bushing 4. The connecting component 3 is used to connect and lock the pipes together and prevent the bushing from falling off the sealing ring 3, thus ensuring the reliability of the connection and the sealing performance of the connection.
[0024] The second pipe 2 is provided with a plug 7 at one end of the first pipe 1, and the first pipe 1 is provided with a slot that mates with the plug 7 at one end of the second pipe 2. A sealing gasket is installed at the joint of the first pipe 1 and the second pipe 2, and the sealing gasket further enhances the sealing performance of the joint.
[0025] The first pipe 1 and the second pipe 2 are provided with annular protrusions 8 on both sides of the sealing ring 5. A sealing ring mounting groove 9 is formed between the two annular protrusions 8. The uncompressed diameter of the sealing ring 5 is greater than the depth of the sealing ring mounting groove 9, ensuring that the sealing ring 5 is in a compressed state after the bushing is installed, thereby improving the sealing effect.
[0026] The connecting assembly 3 includes a first locking sleeve 31, a second locking sleeve 32, and a hinge 33. The first locking sleeve 31 and the second locking sleeve 32 are connected by the hinge 33. A first locking head 35 is installed on the end of the first locking sleeve 31 away from the hinge 33, and a second locking head 36 that cooperates with the first locking head 35 is installed on the end of the second locking sleeve 32 away from the hinge 33. The first locking head 35 and the second locking head 36 enable quick assembly and disassembly at the connection point. The first locking sleeve 31 and the second locking sleeve 32 are both semi-circular arc-shaped. Limiting protrusions 34 are provided on both sides of the first locking sleeve 31 and both sides of the second locking sleeve 32. The first pipe 1 and the second pipe 2 are both provided with annular grooves 6 that cooperate with the limiting protrusions 34. The cooperation between the limiting protrusions 34 and the annular grooves 6 ensures that the connecting assembly 3 will not detach from the connection point of the pipes after the first locking head 35 and the second locking head 36 are locked.
[0027] Both the first locking head 35 and the second locking head 36 include a fixed seat 361 and a pin 362. The pin 362 is mounted on the fixed seat 361, and two locking rods 364 are mounted on the pin 362. A locking groove 365 is provided. The fixed seat 361 is equipped with a spring piece 363 that acts on the locking rods 364. The spring piece 363 is used to press the locking rods onto the corresponding pins when locking.
[0028] The working principle of this utility model is as follows: the bushing 4 presses the sealing ring 5 onto the pipe. The sealing ring 5 can improve the sealing effect at the connection. The sealing element is pressed tightly by the bushing 4 and will not fall off. A connecting component 3 is installed at the insertion point of the first pipe 1 and the second pipe 2. The connecting component 3 is located outside the bushing 4. The connecting component 3 is used to connect and lock the pipes and prevent the bushing from falling off the sealing ring 3, thus ensuring the reliability of the connection and the sealing of the connection.
[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A sewage connection pipe, comprising a first pipe (1) and a second pipe (2), characterized in that: The first pipe (1) and the second pipe (2) are connected to each other. A sealing ring (5) is installed on the outside of the first pipe (1) at one end of the second pipe (2). A sealing ring (5) is installed on the outside of the second pipe (2) at one end of the first pipe (1). A bushing (4) is installed on the outside of the connection between the first pipe (1) and the second pipe (2). The bushing (4) presses the sealing ring (5) onto the pipe. A connecting component (3) is installed at the connection between the first pipe (1) and the second pipe (2). The connecting component (3) is located on the outside of the bushing (4).
2. A sewage connection pipe according to claim 1, characterized in that: The second pipe (2) is provided with a plug (7) at one end of the first pipe (1), and the first pipe (1) is provided with a slot that mates with the plug (7) at one end of the second pipe (2).
3. A sewage connection pipe according to claim 2, characterized in that: A sealing gasket is installed at the joint between the first pipe (1) and the second pipe (2).
4. A sewage connection pipe according to claim 1, characterized in that: The first pipe (1) and the second pipe (2) are provided with annular protrusions (8) on both sides of the sealing ring (5), and a sealing ring mounting groove (9) is formed between the two annular protrusions (8). The uncompressed diameter of the sealing ring (5) is greater than the depth of the sealing ring mounting groove (9).
5. A sewage connection pipe according to claim 1, characterized in that: The connecting assembly (3) includes a first locking sleeve (31), a second locking sleeve (32), and a hinge (33). The first locking sleeve (31) and the second locking sleeve (32) are connected by the hinge (33). A first locking head (35) is installed at the end of the first locking sleeve (31) away from the hinge (33), and a second locking head (36) that cooperates with the first locking head (35) is installed at the end of the second locking sleeve (32) away from the hinge (33). The first locking sleeve (31) and the second locking sleeve (32) are both semi-circular arc-shaped. Limiting protrusions (34) are provided on both sides of the first locking sleeve (31) and both sides of the second locking sleeve (32). The first pipe (1) and the second pipe (2) are both provided with annular grooves (6) that cooperate with the limiting protrusions (34).
6. A sewage connection pipe according to claim 5, characterized in that: The first locking head (35) and the second locking head (36) both include a fixed seat (361) and a pin (362). The pin (362) is mounted on the fixed seat (361), and two locking rods (364) are mounted on the pin (362). A locking groove (365) is provided. The fixed seat (361) is equipped with a spring (363) that acts on the locking rods (364).