A stable connection structure for municipal engineering water supply and drainage pipelines

Abstract

This utility model provides a stable connection structure for municipal engineering water supply and drainage pipelines, relating to the field of municipal engineering technology. It includes a first drainage pipe and a second drainage pipe installed on one side of the first drainage pipe, and further includes a stable connection assembly. In this utility model, a first fixing ring and a second fixing ring are locked together by bolts and nuts. A first sealing ring, under pressure, provides initial sealing at the drainage pipe connection. A first limiting ring is fixed to the inner wall of the first drainage pipe, limiting the first support ring. A telescopic spring pushes the second support ring and the second sealing ring tightly against the inner wall of the drainage pipe connection. When the pipeline experiences slight displacement due to temperature changes or water pressure fluctuations, the telescopic spring adaptively compensates for the gap through elastic deformation, maintaining the second sealing ring continuously pressed against the inner wall of the drainage pipe connection. The second limiting ring restricts the second sealing ring from excessively extending into the second drainage pipe, preventing seal failure and achieving a synergistic effect of stable connection and dynamic sealing.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering technology, and in particular to a stable connection structure for municipal engineering water supply and drainage pipelines. Background Technology

[0002] Traditional municipal water supply and drainage pipeline connection structures suffer from problems such as easy sealing failure and insufficient stability. For example, socket-type rubber rings are prone to aging and displacement, flange connection bolts are prone to loosening, and geological settlement and load changes often lead to leakage and disconnection at the interface, affecting the safety of water supply and drainage and the life of the system. A more robust connection solution is needed.

[0003] However, in actual use, the following shortcomings still exist. For example, the existing stable connection structure of municipal engineering water supply and drainage pipelines cannot achieve the synergistic effect of stable connection and dynamic sealing. Under the action of thermal expansion and contraction, geological settlement or external load, the connection may experience slight displacement or stress concentration due to the failure of dynamic sealing. Long-term repeated action will accelerate the loosening or even cracking of the interface. When the stable connection and dynamic sealing are not coordinated, the interface is easy to disengage under the impact of external force, which will lead to the destruction of the overall structure of the pipeline system and may cause ground subsidence or water supply interruption. When temperature changes, internal water pressure fluctuations or foundation deformation occur, the traditional static sealing structure is difficult to adapt to deformation and is prone to sealing gaps, resulting in sewage seepage or clean water leakage.

[0004] Therefore, this utility model proposes a stable connection structure for municipal engineering water supply and drainage pipelines to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a stable connection structure for water supply and drainage pipelines in municipal engineering.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a stable connection structure for municipal engineering water supply and drainage pipelines, including a first drainage pipe and a second drainage pipe installed on one side of the first drainage pipe, and further comprising:

[0007] A stable connection assembly includes a first fixing ring disposed at the connection between a first drain pipe and a second drain pipe, a second fixing ring disposed at the bottom of the first fixing ring, a first sealing ring disposed inside the first fixing ring, a bolt disposed on the first fixing ring, and a nut disposed on the second fixing ring, wherein the bolt is threaded into the nut.

[0008] A sealing assembly includes a first limiting ring connected inside a first drain pipe, a first support ring disposed inside the first drain pipe near the first limiting ring, a telescopic spring connected to the first support ring, a second support ring connected to the other end of the telescopic spring, a second sealing ring connected to the second support ring, the second sealing ring being disposed at the connection between the first drain pipe and the second drain pipe, and a second limiting ring connected inside the second drain pipe near the second sealing ring.

[0009] Furthermore, both the first and second fixing rings are connected to support plates.

[0010] The beneficial effects of adopting the above-mentioned further solution are: the support plate is fixed on the first and second fixing rings, and when the bolts are tightened, the spring sheet undergoes elastic deformation, continuously applying pressure to the pressure plate to ensure a stable connection of the drainage pipe.

[0011] Furthermore, a spring sheet is connected to the support plate, and a pressure plate is connected to the spring sheet.

[0012] The beneficial effects of adopting the above-mentioned further solution are: the first sealing ring is evenly compressed when the bolt is tightened to ensure sealing, while allowing for slight displacement compensation to prevent damage to the sealing ring due to excessive tightening.

[0013] Furthermore, a limiting block is connected to the second fixing ring, and a limiting groove is formed on the side of the first fixing ring near the limiting block, with the limiting block disposed in the limiting groove.

[0014] The beneficial effects of adopting the above-mentioned further solution are: the limiting block is fixed on the second fixing ring and embedded in the limiting groove of the first fixing ring, providing axial positioning during pipe connection, preventing the first and second fixing rings from being misaligned due to external forces, and at the same time constraining the circumferential displacement of the fixing ring when the drainage pipe vibrates, so that the bolt is evenly stressed and the service life of the connection component is extended.

[0015] Furthermore, a protective cover is connected to the first limiting ring, and the other end of the protective cover is connected to the second support ring.

[0016] The beneficial effects of adopting the above-mentioned further solution are: the protective cover is connected between the first limiting ring and the second support ring to form a flexible protective layer, which prevents mud, sand and debris from entering the telescopic spring area, avoids the telescopic spring from getting stuck or corroded, and its flexible material allows the telescopic spring to extend and retract freely without affecting the sealing compensation function.

[0017] Furthermore, a third sealing ring is provided on the side of the first drain pipe near the second drain pipe.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the third sealing ring is embedded in the annular groove on the end face of the first drain pipe. When the second drain pipe is inserted, it fits tightly against the pipe connection and, together with the first and second sealing rings, forms multiple radial sealing lines, thereby enhancing the anti-leakage capability of the connection.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] In this invention, after the first drain pipe and the second drain pipe are connected, the first fixing ring and the second fixing ring are locked together by bolts and nuts. The first sealing ring is compressed to provide a preliminary seal at the drain pipe connection. The first limiting ring is fixed to the inner wall of the first drain pipe and provides a limiting function for the first support ring. The telescopic spring pushes the second support ring and the second sealing ring to fit tightly against the inner wall of the drain pipe connection. When the pipe undergoes a slight displacement due to temperature changes or water pressure fluctuations, the telescopic spring adaptively compensates for the gap through elastic deformation, keeping the second sealing ring continuously pressed against the inner wall of the drain pipe connection. The second limiting ring restricts the second sealing ring from excessively extending into the second drain pipe, avoiding seal failure and achieving a synergistic effect of stable connection and dynamic sealing. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a stable connection structure for water supply and drainage pipelines in municipal engineering according to the present invention;

[0022] Figure 2 This is a structural breakdown diagram of a stable connection structure for municipal engineering water supply and drainage pipelines according to the present invention.

[0023] Figure 3 This is a schematic diagram of a stable connection component structure for a municipal engineering water supply and drainage pipeline stable connection structure according to the present invention;

[0024] Figure 4 This is a structural breakdown diagram of a stable connection component for a municipal engineering water supply and drainage pipeline stable connection structure according to the present invention.

[0025] Figure 5 This is a schematic diagram of a sealing component for a stable connection structure of municipal engineering water supply and drainage pipelines according to the present invention.

[0026] Figure label:

[0027] 1. First drain pipe; 2. Second drain pipe;

[0028] 3. Secure connecting components; 31. First fixing ring; 32. Second fixing ring; 33. First sealing ring; 34. Support plate; 35. Spring piece; 36. Pressure plate; 37. Bolt; 38. Nut; 39. Limiting block; 310. Limiting groove;

[0029] 4. Sealing assembly; 41. First limiting ring; 42. First support ring; 43. Telescopic spring; 44. Second support ring; 45. Second sealing ring; 46. Second limiting ring; 47. Protective cover; 48. Third sealing ring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figure 1 - Figure 5 As shown, this embodiment provides a technical solution: a stable connection structure for municipal engineering water supply and drainage pipes, including a first drainage pipe 1 and a second drainage pipe 2 installed on one side of the first drainage pipe 1, and further including:

[0032] The stable connection component 3 includes a first fixing ring 31 disposed at the connection between the first drain pipe 1 and the second drain pipe 2, a second fixing ring 32 disposed at the bottom of the first fixing ring 31, a first sealing ring 33 disposed inside the first fixing ring 31, a bolt 37 disposed on the first fixing ring 31, and a nut 38 disposed on the second fixing ring 32, with the bolt 37 threadedly connected to the nut 38.

[0033] Sealing assembly 4 includes a first limiting ring 41 connected inside the first drain pipe 1. A first support ring 42 is disposed inside the first drain pipe 1 near the first limiting ring 41. A telescopic spring 43 is connected to the first support ring 42, and a second support ring 44 is connected to the other end of the telescopic spring 43. A second sealing ring 45 is connected to the second support ring 44. The second sealing ring 45 is disposed at the connection between the first drain pipe 1 and the second drain pipe 2. A second limiting ring 46 is connected inside the second drain pipe 2 near the second sealing ring 45. After the first drain pipe 1 and the second drain pipe 2 are connected, the first fixing ring 31 and the second fixing ring 32 are secured by bolts 3. 7 and nut 38 are tightened, the first sealing ring 33 is compressed and provides initial sealing to the drain pipe connection. The first limiting ring 41 is fixed to the inner wall of the first drain pipe 1 and provides a limiting function for the first support ring 42. The telescopic spring 43 pushes the second support ring 44 and the second sealing ring 45 to fit tightly against the inner wall of the drain pipe connection. When the pipe undergoes a small displacement due to temperature changes or water pressure fluctuations, the telescopic spring 43 adaptively compensates for the gap through elastic deformation, keeping the second sealing ring 45 continuously pressed against the inner wall of the drain pipe connection. The second limiting ring 46 restricts the second sealing ring 45 from excessively extending into the second drain pipe 2, avoiding sealing failure and achieving a synergistic effect of stable connection and dynamic sealing.

[0034] The above solutions also have the problem that, when the first drainage pipe 1 and the second drainage pipe 2 are connected, it is impossible to meet the requirement of small displacement compensation to prevent damage to the sealing ring due to excessive tightness. Figure 1 - Figure 4 As shown: Support plates 34 are connected to both the first fixing ring 31 and the second fixing ring 32. The support plates 34 are fixed to the first fixing ring 31 and the second fixing ring 32. When the bolt 37 is tightened, the spring piece 35 undergoes elastic deformation, continuously applying pressure to the pressure plate 36 to ensure a stable connection of the drainage pipe. The support plate 34 is connected to the spring piece 35, and the spring piece 35 is connected to the pressure plate 36. When the bolt 37 is tightened, the first sealing ring 33 is evenly compressed to ensure sealing performance, while allowing for slight displacement compensation to prevent damage to the sealing ring due to excessive tightening. The second fixing ring 32 is connected to a limiting block 39. A limiting groove 310 is opened on the side of the first fixing ring 31 near the limiting block 39. The limiting block 39 is set in the limiting groove 310. The limiting block 39 is fixed on the second fixing ring 32 and embedded in the limiting groove 310 of the first fixing ring 31. It provides axial positioning during pipe connection, prevents the first fixing ring 31 and the second fixing ring 32 from being misaligned due to external force, and at the same time constrains the circumferential displacement of the fixing ring when the drainage pipe vibrates, so that the bolt 37 is evenly stressed and the service life of the connection assembly is extended.

[0035] like Figure 5 As shown, a protective cover 47 is connected to the first limiting ring 41, and the other end of the protective cover 47 is connected to the second support ring 44. The protective cover 47 is connected between the first limiting ring 41 and the second support ring 44 to form a flexible protective layer, preventing mud, sand and debris from entering the area of ​​the telescopic spring 43 and avoiding the telescopic spring 43 from getting stuck or corroded. Its flexible material allows the telescopic spring 43 to extend and retract freely without affecting the sealing compensation function. A third sealing ring 48 is provided on the side of the first drain pipe 1 near the second drain pipe 2. The third sealing ring 48 is embedded in the annular groove on the end face of the first drain pipe 1. When the second drain pipe 2 is inserted, it is close to the pipe connection and, together with the first sealing ring 33 and the second sealing ring 45, forms multiple radial sealing lines to enhance the anti-leakage capability of the connection.

[0036] like Figure 1 - Figure 5 As shown:

[0037] When connecting the first drain pipe 1 and the second drain pipe 2, the first support ring 42 and its structure are placed inside the first drain pipe 1. The first limiting ring 41 is fixed to the inner wall of the first drain pipe 1, limiting the displacement of the first support ring 42. One end of the telescopic spring 43 is connected to the first support ring 42, and the other end pushes the second support ring 44 and the second sealing ring 45 to press tightly against the inner wall of the drain pipe connection. When the pipe undergoes slight displacement due to temperature changes or water pressure fluctuations, the telescopic spring 43 adaptively compensates for the gap through elastic deformation, keeping the second sealing ring 45 continuously pressed against the inner wall. The second limiting ring 46 inside the second drain pipe 2 restricts the second sealing ring 45 from excessively extending into the second drain pipe 2, preventing seal failure. In addition, the protective cover 47 between the first limiting ring 41 and the second support ring 44 can prevent mud, sand, and debris from entering the area of ​​the telescopic spring 43, avoiding jamming or corrosion of the telescopic spring 43, ensuring its free expansion and contraction and sealing compensation functions. The third sealing ring 48 in the groove on end face 1 fits tightly against the pipe connection when the second drain pipe 2 is inserted, forming multiple sealing lines together with the first sealing ring 33 and the second sealing ring 45, further enhancing the anti-leakage capability and stabilizing the connection assembly 3. The first fixing ring 31 and the second fixing ring 32 are located at the connection of the first drain pipe 1 and the second drain pipe 2, respectively, and are threadedly connected by bolts 37 and nuts 38. When the bolts 37 are tightened, the pressure plate 36 causes the spring 35 to undergo elastic deformation, making the drain pipe connection stable. The first sealing ring 33 is compressed to provide a preliminary seal at the drain pipe connection, ensuring the sealing performance while allowing for minor displacement compensation to avoid damage to the sealing ring due to excessive tightness. At the same time, the limiting block 39 on the second fixing ring 32 is embedded in the limiting groove 310 of the first fixing ring 31, providing axial positioning during pipe connection, preventing misalignment of the two fixing rings, and constraining circumferential displacement when the pipe vibrates, so that the bolt 37 is evenly stressed and the service life of the connection assembly is extended.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A municipal engineering water supply and drainage pipe stable connecting structure, comprising a first drainage pipe (1) and a second drainage pipe (2) arranged on one side of the first drainage pipe (1), characterized in that, Also includes: A stable connection assembly (3) is provided, comprising a first fixing ring (31) disposed at the connection between the first drain pipe (1) and the second drain pipe (2), a second fixing ring (32) disposed at the bottom of the first fixing ring (31), a first sealing ring (33) disposed inside the first fixing ring (31), a bolt (37) disposed on the first fixing ring (31), and a nut (38) disposed on the second fixing ring (32), wherein the bolt (37) is threadedly connected to the nut (38); A sealing assembly (4) includes a first limiting ring (41) connected inside a first drain pipe (1), a first support ring (42) provided inside the first drain pipe (1) near the first limiting ring (41), a telescopic spring (43) connected to the first support ring (42), a second support ring (44) connected to the other end of the telescopic spring (43), a second sealing ring (45) connected to the second support ring (44), the second sealing ring (45) being located at the connection between the first drain pipe (1) and the second drain pipe (2), and a second limiting ring (46) connected inside the second drain pipe (2) near the second sealing ring (45).

2. The municipal engineering water supply and drainage pipeline stable connecting structure according to claim 1, characterized in that: Both the first fixing ring (31) and the second fixing ring (32) are connected to a support plate (34).

3. The municipal engineering water supply and drainage pipeline stable connecting structure according to claim 2, characterized in that: A spring sheet (35) is connected to the support plate (34), and a pressure plate (36) is connected to the spring sheet (35).

4. The municipal engineering water supply and drainage pipeline stable connecting structure according to claim 1, characterized in that: A limiting block (39) is connected to the second fixing ring (32), and a limiting groove (310) is opened on the side of the first fixing ring (31) near the limiting block (39), and the limiting block (39) is disposed in the limiting groove (310).

5. The municipal engineering water supply and drainage pipeline stable connecting structure according to claim 1, characterized in that: A protective cover (47) is connected to the first limiting ring (41), and the other end of the protective cover (47) is connected to the second support ring (44).

6. The municipal engineering water supply and drainage pipeline stable connecting structure according to claim 1, characterized in that: A third sealing ring (48) is provided on the side of the first drain pipe (1) near the second drain pipe (2).

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