A leak-proof connecting device for water heating pipes

Abstract

This utility model relates to the field of pipe connection technology and discloses a leak-proof connection device for plumbing pipes. It includes water pipes, with the ends of two pipes connected by a connecting joint. The connecting joint is a connecting pipe assembly, with inwardly extending annular insertion interfaces on both ends. The end of the connecting pipe assembly is inserted into the end of the water pipe through the insertion interfaces, and the insertion interfaces enclose the inner and outer walls of the pipe opening. A sealing assembly consisting of multiple sealing rings is sequentially arranged on the inner ring of the insertion interface along the axial direction of the water pipe insertion. Both outer ends of the connecting pipe assembly have threaded mating areas, and each is threaded with a spiral collar, which tightly grips the outer ring of the insertion interface. This leak-proof connection device for plumbing pipes effectively solves the problems of weak sealing, easy leakage, and cumbersome installation found in traditional connection methods by employing a special mating structure and a multi-layered sealing system.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, specifically to a leak-proof connection device for plumbing pipes. Background Technology

[0002] With the continuous upgrading and diversification of water supply systems in buildings and facilities, plumbing, as a crucial infrastructure for water supply, heating, and drainage, has been widely used in various residential, commercial, and industrial settings. To ensure the normal operation of the water system, the connections between pipes must possess excellent sealing and mechanical strength to prevent water leakage and pipe detachment, thereby guaranteeing the system's safety and service life.

[0003] Currently, commonly used plumbing pipe connection methods include threaded connections, clamp connections, adhesive connections, and socket connections. These traditional connection methods have some shortcomings in practical applications. For example, while threaded connections are simple in structure, they are prone to problems such as incomplete sealing, loosening or damage of the threads after prolonged use, leading to an increased risk of leakage. Clamp connections, although easy to install, are limited by pipe diameter and material elasticity, making it difficult to achieve a complete seal, and are prone to loosening due to vibration or temperature changes. Adhesive connections are limited by pipe material compatibility and adhesive durability, making them prone to bonding failure or leakage.

[0004] Furthermore, traditional connection devices have shortcomings in their sealing structure design, making it difficult to cope with pressure fluctuations, temperature changes, and vibrations under complex operating conditions, resulting in a high frequency of leaks and high maintenance costs. At the same time, some connection devices require cumbersome installation procedures, increasing construction difficulty and time costs, and affecting construction efficiency and system reliability. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a leak-proof connection device for water heating pipes to solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof connection device for water heating pipes, including water pipes, with the ends of two water pipes connected by a connecting member. The main body of the connecting member is a connecting pipe, and both ends of the connecting pipe are provided with an inwardly extending annular insertion interface. The end of the connecting pipe is inserted into the end of the water pipe through the insertion interface and is wrapped around the inner and outer pipe walls of the pipe opening. The inner ring of the insertion interface is provided with a sealing component composed of multiple sealing rings in sequence along the axial direction of the water pipe insertion. Both ends of the outer side of the connecting pipe are provided with threaded mating areas, and each is threaded with a spiral collar, which is tightly wrapped around the outer ring of the insertion interface.

[0007] Preferably, the outer ring of the connector has axially distributed notches at both the front and rear, dividing the outer ring of the connector into two halves.

[0008] Preferably, the outer wall of the inner ring of the insertion interface is uniformly provided with a number of sealing grooves for positioning a number of sealing rings inside the sealing assembly.

[0009] Preferably, the sealing assembly includes a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring, and a fifth sealing ring, and the number of each of the first sealing ring, the second sealing ring, the third sealing ring, the fourth sealing ring, and the fifth sealing ring is set to three.

[0010] Preferably, the first sealing ring is made of rigid engineering plastic.

[0011] Preferably, the second sealing ring is made of hard rubber.

[0012] Preferably, the third sealing ring is made of soft rubber.

[0013] Preferably, the fourth sealing ring is made of silicone.

[0014] Preferably, the fifth sealing ring is made of foamed rubber or sponge rubber.

[0015] Compared with the prior art, this utility model provides a leak-proof connection device for plumbing pipes, which has the following advantages: Significantly improves the sealing performance of the connection: This leak-proof connection device adopts a specialized docking component structure design, combined with multi-layer sealing components, to achieve multiple sealing barriers, effectively preventing water leakage. This multi-seal, multi-material sealing system can adapt to water temperature fluctuations and pipeline vibrations, ensuring a long-term stable sealing effect.

[0016] Enhanced connection strength and reliability: The tight fit between the annular connector and the threaded mating area, along with the compression effect of the spiral collar, ensures a tight connection between the water pipe and the fitting, preventing loosening and leakage. Simultaneously, the notch design in Embodiment 2 allows the spiral collar to contract more evenly when tightened, accommodating minute tolerances of different pipe diameters and significantly improving the stability and adaptability of the connection.

[0017] Improved ease of installation and sealing stability: The sealing groove design keeps the sealing ring in place during assembly, preventing displacement and ensuring accurate sealing. This not only simplifies installation but also reduces the risk of leakage due to misalignment of the sealing ring, enhancing the overall system reliability.

[0018] Achieving multi-layered and multi-functional sealing protection: The composite sealing system, composed of sealing rings of different materials and hardness, forms multiple protective barriers, capable of coping with various complex working conditions, including high temperature, low temperature, vibration and pressure fluctuations, effectively preventing water leakage and greatly enhancing the durability and safety of pipeline connections.

[0019] Adaptable to diverse working conditions and extended service life: This innovative connection device, through a special structural design and a reasonable combination of multi-layer sealing materials, possesses excellent corrosion resistance, temperature resistance, and vibration resistance. It can operate stably in various water heating systems, extending the service life of the equipment and reducing maintenance frequency and costs.

[0020] In summary, this practical leak-proof connection device for plumbing pipes effectively solves the problems of weak sealing, easy leakage, and cumbersome installation inherent in traditional connection methods by employing a special butt joint structure and a multi-layered sealing system. Its innovative design not only significantly improves the sealing performance and mechanical strength of the connection but also enhances the system's adaptability and durability, providing a solid guarantee for the safe operation of plumbing systems. This device has broad application prospects, especially suitable for plumbing projects requiring high sealing and reliability, and can greatly improve construction efficiency and overall system performance, bringing significant economic and social benefits to related industries. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the half-section structure of this utility model; Figure 3 This is a schematic diagram showing the distribution of the sealing grooves of this utility model; Figure 4 This is a schematic diagram showing the distribution of the sealing components of this utility model; Figure 5 for Figure 4 A magnified view of a portion of point A in the middle; Figure 6 This is a schematic diagram of the notch distribution of this utility model.

[0022] The components include: 1. Water pipes; 2. Connecting parts; 21. Butt joint; 22. Insertion port; 23. Sealing assembly; 24. Spiral collar; 25. Threaded mating area; 26. Notch; 27. Sealing groove; 231. First sealing ring; 232. Second sealing ring; 233. Third sealing ring; 234. Fourth sealing ring; 235. Fifth sealing ring. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the utility model without creative effort are within the scope of protection of the utility model.

[0024] It should be noted that if the utility model embodiment involves directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the utility model.

[0026] Please see Figure 1-6 A specific embodiment of a leak-proof connection device for plumbing pipes. Example

[0027] This embodiment presents a leak-proof connection device for plumbing pipes, primarily used to connect two water pipes 1. Its core feature lies in achieving a reliable and leak-proof connection through a dedicated connector 2.

[0028] The main body of the connector 2 is a hollow connector 21, with an internal channel for water flow. At both ends of the connector 21, there are integrally formed or machined annular insertion interfaces 22 extending towards the center. The design of these insertion interfaces 22 allows them to be inserted into the end of the water pipe 1, and their unique structure simultaneously wraps around the inner and outer walls of the water pipe 1 port, forming a socket-type connection, increasing the stability of the connection and the contact area.

[0029] To achieve the crucial sealing function, a sealing assembly 23 consisting of multiple sealing rings is sequentially installed on the inner ring of the connector 22 along the axial direction of the water pipe 1 insertion. These sealing rings are tightly arranged together, and when the water pipe 1 is inserted, they are fully compressed, thereby forming multiple reliable sealing barriers between the outer wall of the water pipe 1 and the inner wall of the connector 22, greatly improving the leak-proof performance.

[0030] To provide strong locking force and ensure a secure connection, external threads are machined at both ends of the connector 21, forming threaded mating areas 25. On each threaded mating area 25, a spiral collar 24 is fitted into the thread. When the water pipe 1 is inserted into the connector 22, tightening the spiral collar 24 compresses and grips the outer ring of the connector 22, thus forcing the connector 22 to tightly clamp the water pipe 1 and prevent it from loosening. Example

[0031] This embodiment is an optimization based on Embodiment 1. To enable the spiral collar 24 to more effectively contract and grip the water pipe 1 when tightened, multiple axially extending notches 26 are provided at the front and rear of the outer ring of the connector 22 (i.e., near the port and near the main body of the connecting pipe). These notches 26 divide the outer ring of the connector 22 into multiple (e.g., two or more) elastic petal-like structures. When the spiral collar 24 is tightened, these petal-like structures can more easily generate radial elastic deformation, contracting evenly, thereby gripping the water pipe 1 more tightly and firmly, accommodating minute tolerances of different pipe diameters. Example

[0032] This embodiment further optimizes the sealing structure of the above embodiment. To ensure that the sealing rings in the sealing assembly 23 do not shift after installation and are fixed in the optimal design position, a plurality of annular sealing grooves 27 are uniformly machined on the outer wall of the inner ring of the insertion interface 22. The size of each sealing groove 27 matches the corresponding sealing ring. During assembly, each sealing ring is pressed into the corresponding sealing groove 27 in sequence. The sidewall of the groove 27 can effectively restrict the axial movement of the sealing ring, ensuring the accuracy of the sealing position and the stability of long-term use. Example

[0033] This embodiment details a preferred combination of the sealing assembly 23. The sealing assembly 23 includes a first sealing ring 231, a second sealing ring 232, a third sealing ring 233, a fourth sealing ring 234, and a fifth sealing ring 235. To achieve optimal redundant sealing, three of each type of sealing ring are used to form a thick composite sealing wall.

[0034] The first sealing ring 231 is made of rigid engineering plastic (such as POM, nylon, etc.). Its main function is to provide structural support and primary sealing, preventing the soft sealing ring from being excessively compressed and deformed.

[0035] The second sealing ring 232 is made of hard rubber (such as hard NBR). It has high hardness, which provides strong resistance to compression and durable sealing.

[0036] The third sealing ring 233 is made of soft rubber (such as soft EPDM). It has good elasticity and can fully fill micro gaps to achieve excellent static sealing effect.

[0037] The fourth sealing ring 234 is made of silicone. Silicone has excellent resistance to high and low temperatures and flexibility, and can adapt to changes in water temperature and pipe vibration.

[0038] The fifth sealing ring 235 is made of foamed rubber or sponge rubber. This material has extremely high compressibility and resilience, and can absorb pressure fluctuations and vibrations in the system. As the last buffer and sealing barrier, it greatly improves the water hammer resistance and shock absorption and leakage prevention capabilities of the entire connection device.

[0039] By combining the above five sealing rings of different materials and hardness in sequence, this utility model creatively constructs a multi-layered and multi-functional integrated sealing system that can effectively cope with various complex working conditions and achieve extraordinary leak-proof effect.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A leak-proof connecting device for water heating pipes, comprising a water pipe (1), characterized in that: The ends of two water pipes (1) are connected by a connecting part (2). The main body of the connecting part (2) is a connecting pipe (21). Both ends of the connecting pipe (21) are provided with an inwardly extending annular insertion interface (22). The end of the connecting pipe (21) is inserted into the end of the water pipe (1) through the insertion interface (22) and wrapped around the inner and outer walls of the pipe opening. The inner ring of the insertion interface (22) is provided with a sealing component (23) composed of multiple sealing rings in sequence along the axial direction of the water pipe (1) insertion. Both ends of the outer side of the connecting pipe (21) are provided with threaded mating areas (25) and are threaded with a spiral collar (24). The spiral collar (24) hugs the outer ring of the insertion interface (22).

2. A leak-proof connecting device for water heating pipes according to claim 1, characterized in that: The outer ring of the connector (22) is provided with axially distributed notches (26) on both the front and rear sides, dividing the outer ring of the connector (22) into two halves.

3. A leak-proof connecting device for water heating pipes according to claim 1, characterized in that: The inner ring of the insertion interface (22) is uniformly provided with a number of sealing grooves (27) for positioning a number of sealing rings inside the sealing assembly (23).

4. The leakage-proof connecting device for water heating pipes according to claim 1, characterized in that: The sealing assembly (23) includes a first sealing ring (231), a second sealing ring (232), a third sealing ring (233), a fourth sealing ring (234), and a fifth sealing ring (235), and the number of the first sealing ring (231), the second sealing ring (232), the third sealing ring (233), the fourth sealing ring (234), and the fifth sealing ring (235) is set to three.

5. A leak-proof connecting device for water heating pipes according to claim 4, characterized in that: The first sealing ring (231) is made of hard engineering plastic.

6. A leak-proof connecting device for water heating pipes according to claim 4, characterized in that: The second sealing ring (232) is made of hard rubber.

7. A leak-proof connecting device for water heating pipes according to claim 4, characterized in that: The third sealing ring (233) is made of soft rubber.

8. A leak-proof connecting device for water heating pipes according to claim 4, characterized in that: The fourth sealing ring (234) is made of silicone.

9. A leak-proof connecting device for water heating pipes according to claim 4, characterized in that: The fifth sealing ring (235) is made of foamed rubber or sponge rubber.

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