A leak-proof sealing structure for municipal water supply pipelines

Abstract

This utility model discloses a leak-proof sealing structure for municipal water supply pipelines, including a first pipeline and a second pipeline on one side of the first pipeline. An upper arc-shaped sealing seat and a lower arc-shaped sealing seat are respectively provided on the outside of the first pipeline. An annular flow-guiding protrusion is fixedly connected to the inner ring of the first pipeline. An annular recess is provided inside the second pipeline, and a sealing ring is provided inside the annular recess. The inner ring of the sealing ring is in close contact with the outer surface of the annular flow-guiding protrusion. A sealing gasket is provided between the first and second pipelines. This leak-proof sealing structure for municipal water supply pipelines forms a first seal through the close contact between the annular flow-guiding protrusion and the sealing ring. Furthermore, the threaded locking ring compresses the sealing gasket, achieving uniform force distribution and ensuring close contact between the sealing gasket and both ends of the first and second pipelines. This solves the problem of uneven flange bolt tightening and ensures a good seal at the water supply pipeline connection.

Description

Technical Field

[0001] This utility model relates to the field of water supply pipelines, and in particular to a leak-proof sealing structure for municipal water supply pipelines. Background Technology

[0002] Water supply pipelines are a core component of urban water supply systems. They are mainly used to transport drinking water and reclaimed water treated by waterworks to various water-using places such as residential areas, public buildings, and industrial plants. They also undertake special water supply tasks such as fire fighting and greening irrigation within the region. These pipelines are mostly made of materials such as steel pipes, ductile iron pipes, PE pipes, and PVC pipes.

[0003] Currently, flanges are commonly used for connecting water supply pipes. However, flange connections require aligning multiple screws, which is cumbersome and can lead to uneven pressure on the sealing ring, causing leakage and reducing the sealing effect at the connection. To address these issues, we propose a leak-proof sealing structure for municipal water supply pipes. Utility Model Content

[0004] The purpose of this utility model is to provide a leak-proof sealing structure for municipal water supply pipelines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A leak-proof sealing structure for municipal water supply pipelines includes a first pipeline, a second pipeline on one side of the first pipeline, an upper arc-shaped sealing seat and a lower arc-shaped sealing seat on the outside of the first pipeline, an annular flow guiding protrusion fixedly connected to the inner ring of the first pipeline, an annular recess on the inside of the second pipeline, a sealing ring on the inside of the annular recess, the inner ring of the sealing ring being in close contact with the outer surface of the annular flow guiding protrusion, and a sealing gasket between the first pipeline and the second pipeline.

[0007] In a further embodiment, one end of the first pipe and one end of the second pipe are both in contact with the outer surface of the sealing gasket, and the upper arc-shaped sealing seat and the lower arc-shaped sealing seat are both located outside the sealing gasket.

[0008] In a further embodiment, the outer surface of the upper arc-shaped sealing seat has two threaded through holes, and the upper surface of the lower arc-shaped sealing seat has two threaded grooves.

[0009] In a further embodiment, two limiting blocks are fixedly connected to the bottom surface of the upper arc-shaped sealing seat, and two limiting holes are opened on the upper surface of the lower arc-shaped sealing seat, with the bottom ends of the two limiting blocks extending into the interior of the two limiting holes respectively.

[0010] In a further embodiment, both the outer surfaces of the first pipe and the outer surfaces of the second pipe are threadedly connected with threaded locking rings. The ends of the two threaded locking rings that are close to each other are in contact with the outer surface of the sealing gasket. Both threaded locking rings have two rotating recesses on their outer surfaces.

[0011] In a further embodiment, both of the threaded through holes are threaded with fixing screws, and the outer surface of the fixing screws is adapted to the inner wall of the threaded groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention forms a first seal through the tight contact between the annular guide protrusion and the sealing ring. Furthermore, the threaded locking ring compresses the sealing gasket, ensuring uniform force distribution and close contact between the gasket and both ends of the first and second pipes. This solves the problem of uneven flange bolt tightening and guarantees a good seal. Additionally, the upper and lower arc-shaped sealing seats, positioned by limiting blocks and holes, facilitate the re-tightening and fixing of the sealing gasket without requiring hole adjustments, simplifying the installation process and enhancing the leak-proof sealing effect. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of the leak-proof sealing structure of municipal water supply pipelines, viewed from the front.

[0015] Figure 2 A frontal sectional view of the arc-shaped sealing seat on the leak-proof sealing structure of a municipal water supply pipeline;

[0016] Figure 3 A sectional view from the side of the arc-shaped sealing seat on the leak-proof sealing structure of a municipal water supply pipeline;

[0017] Figure 4 Leak-proof sealing structure for municipal water supply pipelines Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. First pipe; 2. Upper arc-shaped sealing seat; 3. Second pipe; 4. Annular guide protrusion; 5. Annular recess; 6. Sealing ring; 7. Sealing gasket; 8. Lower arc-shaped sealing seat; 9. Rotating recess; 10. Limiting block; 11. Threaded locking ring; 12. Threaded through hole; 13. Fixing screw; 14. Threaded groove; 15. Limiting hole. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] 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.

[0022] Please see Figures 1-4 In this utility model, a leak-proof sealing structure for municipal water supply pipelines includes a first pipeline 1, a second pipeline 3 on one side of the first pipeline 1, an upper arc-shaped sealing seat 2 and a lower arc-shaped sealing seat 8 on the outside of the first pipeline 1, an annular flow guiding protrusion 4 fixedly connected to the inner ring of the first pipeline 1, an annular recess 5 inside the second pipeline 3, a sealing ring 6 inside the annular recess 5, the inner ring of the sealing ring 6 being in close contact with the outer surface of the annular flow guiding protrusion 4, and a sealing gasket 7 between the first pipeline 1 and the second pipeline 3. The sealing ring 6 is made of nitrile rubber and can withstand the compression during pipeline connection and long-term water flow scouring. It has excellent oil resistance, wear resistance and water resistance. The sealing gasket 7 is sandwiched between the ends of the first pipeline 1 and the second pipeline 3 and is made of EPDM rubber, which has excellent weather resistance, ozone resistance and chemical stability.

[0023] In a further embodiment, one end of the first pipe 1 and one end of the second pipe 3 are in contact with the outer surface of the sealing gasket 7. The upper arc-shaped sealing seat 2 and the lower arc-shaped sealing seat 8 are both located outside the sealing gasket 7. The outer surfaces of the first pipe 1 and the second pipe 3 are both threadedly connected with threaded locking rings 11. The ends of the two threaded locking rings 11 that are close to each other are in contact with the outer surface of the sealing gasket 7. The outer surfaces of the two threaded locking rings 11 are each provided with two rotating recesses 9. Through the contact between one end of the first pipe 1 and one end of the second pipe 3 and the sealing gasket 7, the sealing effect of the sealing gasket 7 is enhanced by the compression of the sealing gasket 7 by the two pipes. Since the upper arc-shaped sealing seat 2 and the lower arc-shaped sealing seat 8 are located outside the sealing gasket 7, they can form a protective enclosure for the sealing gasket 7 and the connection part of the two pipes from the outside, reducing the influence of external factors on the sealing part. By rotating the threaded locking rings 11, uniform pressure can be applied to the sealing gasket 7, improving the sealing performance of the sealing gasket 7. The rotating recesses 9 make it convenient to rotate the threaded locking rings 11 with the help of tools.

[0024] In a further embodiment, the outer surface of the upper arc-shaped sealing seat 2 has two threaded through holes 12, and the upper surface of the lower arc-shaped sealing seat 8 has two threaded grooves 14. A fixing screw 13 is threaded into each of the two threaded through holes 12, and the outer surface of the fixing screw 13 is adapted to the inner wall of the threaded groove 14. Two limiting blocks 10 are fixedly connected to the bottom surface of the upper arc-shaped sealing seat 2, and two limiting holes 15 are opened on the upper surface of the lower arc-shaped sealing seat 8. The bottom ends of the two limiting blocks 10 extend into the interior of the two limiting holes 15. Through the threaded through holes 12 and threaded grooves 14, and in cooperation with the fixing screws 13, the upper arc-shaped sealing seat 2 and the lower arc-shaped sealing seat 8 can be securely connected together, locking and constraining the pipe connection. Through the cooperation of the limiting blocks 10 and limiting holes 15, the upper arc-shaped sealing seat 2 and the lower arc-shaped sealing seat 8 can be positioned, preventing misalignment during installation or use, and ensuring that the fixing screw 13 is smoothly screwed into the threaded groove 14.

[0025] The working principle of this utility model is as follows: When the first pipe 1 is connected to the second pipe 3, the annular guide protrusion 4 of the first pipe 1 is embedded in the interior of the second pipe 3 and will squeeze the sealing ring 6. Through the tight contact between the sealing ring 6 and the annular guide protrusion 4, a first seal can be formed. Then, the sealing gasket 7 is clamped at the ends of the two pipes to form a second seal. By rotating the threaded locking ring 11, the sealing gasket 7 can be squeezed towards the middle to achieve uniform force. Then, the upper arc-shaped sealing seat 2 and the lower arc-shaped sealing seat 8 are positioned by the limiting block 10. Then, the fixing screw 13 is screwed into the threaded groove 14 through the threaded through hole 12 to form an overall constraint structure and improve the leak-proof effect.

[0026] 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.

[0027] 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 seal structure for a municipal water supply pipe, characterized by: The first pipe (1) is provided with a second pipe (3) on one side of the first pipe (1). The outer side of the first pipe (1) is provided with an upper arc-shaped sealing seat (2) and a lower arc-shaped sealing seat (8). The inner ring of the first pipe (1) is fixedly connected with an annular flow guide protrusion (4). The inner side of the second pipe (3) is provided with an annular recess (5). The inner side of the annular recess (5) is provided with a sealing ring (6). The inner ring of the sealing ring (6) is in close contact with the outer surface of the annular flow guide protrusion (4). A sealing gasket (7) is provided between the first pipe (1) and the second pipe (3).

2. A leak-proof sealing structure for a municipal water supply pipe according to claim 1, characterized in that: One end of the first pipe (1) and one end of the second pipe (3) are in contact with the outer surface of the sealing gasket (7), and the upper arc-shaped sealing seat (2) and the lower arc-shaped sealing seat (8) are both located outside the sealing gasket (7).

3. A leak-proof sealing structure for a municipal water supply pipe according to claim 1, characterized in that: The outer surface of the upper arc-shaped sealing seat (2) has two threaded through holes (12), and the upper surface of the lower arc-shaped sealing seat (8) has two threaded grooves (14).

4. A leak-proof sealing structure for a municipal water supply pipe according to claim 1, characterized in that: The bottom surface of the upper arc-shaped sealing seat (2) is fixedly connected to two limiting blocks (10), and the upper surface of the lower arc-shaped sealing seat (8) is provided with two limiting holes (15). The bottom ends of the two limiting blocks (10) extend into the interior of the two limiting holes (15).

5. A leak-proof sealing structure for a municipal water supply pipe according to claim 1, characterized in that: The outer surfaces of the first pipe (1) and the second pipe (3) are both threadedly connected with threaded locking rings (11). The two threaded locking rings (11) are in contact with the outer surface of the sealing gasket (7) at their closest ends. The outer surfaces of the two threaded locking rings (11) are provided with two rotating recesses (9).

6. A leak-proof sealing structure for a municipal water supply pipe according to claim 3, characterized in that: Both of the threaded through holes (12) are threaded with fixing screws (13), and the outer surface of the fixing screws (13) is adapted to the inner wall of the threaded groove (14).

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