Valve seal enhancement device for a fuel delivery pipe

Abstract

This utility model relates to the field of valve technology and discloses a sealing enhancement device for pipeline valves. It includes a valve shell with valve body connecting pipes extending through both sides. A flange is fixedly connected to one end of each valve body connecting pipe, and a sealing assembly is provided on the inner wall of the valve body connecting pipe. The sealing assembly includes a metal sealing ring, which is fixedly connected to the inner wall of the valve body connecting pipe. A venting cavity is formed inside the metal sealing ring, and an annular sleeve is fixedly connected to one side of the metal sealing ring. This utility model inflates a rubber hose, causing it to expand and press against the inner wall of the connecting pipe to form a tight seal. During fluid flow, the inclined surface and transition arc surface cooperate to enhance the sealing performance of the valve connection to the external pipeline. Furthermore, the spring force is used to press the compression block against both sides of the blocking cover, reducing the rotational displacement when the blocking cover is tightened to seal the air inlet pipe, maintaining its sealing performance, and facilitating the reduction of gas leakage inside the rubber hose.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a sealing enhancement device for pipeline valves. Background Technology

[0002] Distribution pipelines are pipeline networks used to transport and distribute media in fluid transport systems. They include pipelines that transport raw water from water sources to water treatment plants and pipelines that distribute water from water treatment plants or regulating structures to users. Distribution pipeline valves are pipeline accessories installed on distribution pipelines to control parameters such as fluid flow direction, pressure, and flow rate.

[0003] A search revealed that Chinese patent CN217003290U discloses a high-sealing valve. This patent addresses the common problem of leaks at the connection points between existing valves and pipelines, particularly when the gas pressure inside the pipeline is too high. By incorporating an exhaust mechanism, excessive gas pressure within the pipeline can be expelled, preventing leaks at the valve body and connecting pipe. Furthermore, the inclusion of two sealing rings (one and two) provides a double seal between the valve body and the connecting pipe, enhancing their sealing performance.

[0004] The above-mentioned double sealing of valves using only sealing ring one and sealing ring two results in a relatively weak sealing effect. In the traditional way, valves are usually connected to pipelines using flanges and high-strength bolts. However, because the valves in the distribution pipeline need to transport fluid, the fluid is prone to carrying small particulate impurities. Furthermore, vibrations are easily generated during fluid transport, which can cause small particulate impurities to get stuck at the flange connection between the valve and the pipeline, thereby reducing the sealing performance at the valve-pipeline connection. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a sealing enhancement device for pipeline valves.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a valve sealing enhancement device for transmission and distribution pipelines, comprising a valve shell, wherein valve body connecting pipes are connected through both sides of the valve shell, a flange is fixedly connected to one end of the valve body connecting pipes, and a sealing component is provided on the inner wall of the valve body connecting pipes. The sealing assembly includes a metal sealing ring, which is fixedly connected to the inner wall of the valve body pipe. A venting cavity is provided inside the metal sealing ring, and an annular sleeve is fixedly connected to one side of the metal sealing ring.

[0007] As a further description of the above technical solution: The inner wall of the annular sleeve has an inclined surface on one side, and a transition arc surface on one side of the inclined surface. A rubber hose is fixedly connected to one side of the annular sleeve.

[0008] As a further description of the above technical solution: Both sides of the rubber hose are connected to vent pipes. The two vent pipes are fixedly connected to the outer walls of the annular sleeve on both sides, and one end of the two vent pipes is connected to one side of the metal sealing ring.

[0009] As a further description of the above technical solution: An air inlet pipe is connected through the upper surface of the metal sealing ring. One end of the air inlet pipe is threaded with a blocking cap. Multiple grooves are provided on the outer wall of the blocking cap. A sealing ring is provided on one side of the flange.

[0010] As a further description of the above technical solution: The upper surface of the valve body connector is provided with a limiting component, which includes two fixing brackets. The two fixing brackets are fixedly connected to the upper surface of the valve body connector. A limiting handle is provided on one side of the fixing bracket. A round rod and a screw are fixedly connected to one side of the limiting handle. The screw is located above the round rod.

[0011] As a further description of the above technical solution: An extrusion block is fixedly connected to one end of the round rod and the screw, and a nut is threaded onto the external side of the screw. The nut is rotatably connected to one side of the fixed frame.

[0012] As a further description of the above technical solution: Two springs are fixedly connected to one side of the fixing frame, with two springs fixedly connected to one side of the extrusion block, and the two springs respectively sleeved on the outside of the screw and the round rod.

[0013] This utility model has the following beneficial effects: 1. This utility model, through the setting of the sealing component, provides a first layer of sealing at the flange connection between the valve body pipe and the connecting pipe via the sealing ring. When the rubber hose is filled with gas through the vent pipe, vent chamber and inlet pipe, it will expand. During expansion, the outer wall of the rubber hose easily contacts and squeezes the inner wall of the connecting pipe. Thus, the gas squeezes the gap between the rubber hose and the connecting pipe, which facilitates a second layer of tight sealing. Moreover, when the fluid flows, the inclined surface facilitates the guidance of the fluid, and the transition arc surface facilitates the smooth flow of the fluid, which helps to enhance the sealing performance of the connection between the valve and the external pipeline.

[0014] 2. By setting up a limiting component, this utility model utilizes the compression blocks on both sides under the elastic force provided by the spring to facilitate the compression of both sides of the blocking cover. This reduces the rotational displacement of the blocking cover when tightening and sealing one end of the air intake pipe, which helps maintain the sealing performance of the blocking cover to the air intake pipe and thus helps reduce the phenomenon of gas leakage inside the rubber hose. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a partial structural diagram of the vent pipe connection point proposed in this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the annular sleeve proposed in this utility model; Figure 4 This is a schematic diagram of the rubber hose structure proposed in this utility model; Figure 5 This is a schematic diagram of the limiting handle structure proposed in this utility model; Figure 6 This is a schematic diagram of the extrusion block structure proposed in this utility model; Figure 7 This is a schematic diagram of the fixing frame structure proposed in this utility model.

[0016] Legend: 1. Valve housing; 2. Valve body connecting pipe; 3. Flange; 4. Metal sealing ring; 5. Vent chamber; 6. Annular sleeve; 7. Inclined surface; 8. Transition arc surface; 9. Rubber hose; 10. Vent pipe; 11. Inlet pipe; 12. Block cover; 13. Sealing ring; 14. Fixing bracket; 15. Limit handle; 16. Round rod; 17. Screw; 18. Extrusion block; 19. Nut; 20. Spring. Detailed Implementation

[0017] 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.

[0018] As attached Figure 1-7 As shown, one embodiment of this utility model is provided: a valve sealing enhancement device for a transmission and distribution pipeline valve, including a valve shell 1, valve body pipes 2 are connected through both sides of the valve shell 1, a flange 3 is fixedly connected to one end of the valve body pipe 2, and a sealing component is provided on the inner wall of the valve body pipe 2. The sealing assembly includes a metal sealing ring 4, which is fixedly connected to the inner wall of the valve body pipe 2. The metal sealing ring 4 has a venting chamber 5 for gas flow inside, and an annular sleeve 6 for connecting a rubber hose 9 is fixedly connected to one side of the metal sealing ring 4.

[0019] As attached Figure 3 As shown, an inclined surface 7 for guiding liquid flow is provided on one side of the inner wall of the annular sleeve 6, and a transition arc surface 8 for facilitating smooth liquid flow is provided on one side of the inclined surface 7. A flexible rubber hose 9 with an internal cavity is fixedly connected to one side of the annular sleeve 6. The rubber hose 9 is annular, and vent pipes 10 for gas flow are connected through both sides of the rubber hose 9. The two vent pipes 10 are fixedly connected to the two sides of the outer wall of the annular sleeve 6, and one end of the two vent pipes 10 is connected through to one side of the metal sealing ring 4, so that gas can enter the rubber hose 9 through the venting cavity 5 and the vent pipes 10. An air inlet pipe 11 for air intake is connected through the upper surface of the metal sealing ring 4. One end of the air inlet pipe 11 is threadedly connected to a blocking cap 12 for sealing the air inlet pipe 11. The outer wall of the blocking cap 12 has multiple grooves that match the extrusion block 18.

[0020] As attached Figure 1 As shown, a sealing ring 13 for sealing is provided on one side of the flange 3, and a limiting assembly is provided on the upper surface of the valve body pipe 2. The limiting assembly includes two fixing brackets 14 with internal openings for the passage of the round rod 16 and the screw 17. The two fixing brackets 14 are fixedly connected to the upper surface of the valve body pipe 2.

[0021] As attached Figure 6 As shown, a limit handle 15 is provided on one side of the fixing frame 14. A round rod 16 and a screw 17 are fixedly connected to one side of the limit handle 15. The screw 17 is located above the round rod 16. A T-shaped pressing block 18 is fixedly connected to one end of the round rod 16 and the screw 17. One side of the pressing block 18 matches the groove of the blocking cover 12. A nut 19 that limits the screw 17 is connected to the external thread of the screw 17. The nut 19 is rotatably connected to one side of the fixing frame 14.

[0022] As attached Figure 5 As shown, two springs 20 for providing elastic force to the extrusion block 18 are fixedly connected to one side of the fixing frame 14. The two springs 20 are fixedly connected to one side of the extrusion block 18, and the two springs 20 are respectively sleeved on the outside of the screw 17 and the round rod 16. The screw 17 and the round rod 16 facilitate the limiting of the springs 20.

[0023] Working principle: The valve body is composed of valve shell 1, valve body pipes 2 on both sides and flange 3. When in use, the connection end of the external connection pipe is connected to the flange 3 with high-strength bolts. When connected, the sealing ring 13 will be squeezed, causing the sealing ring 13 to be deformed under pressure, thus playing the first layer of sealing role. When connecting to an external pipe, the annular sleeve 6 will cause the rubber hose 9 to be inserted into the inner wall of the pipe, at which time the rubber hose 9 is in a flat state; Then, unscrew the cover 12 and use the external air pump to supply air through the air inlet pipe 11. The gas enters the ventilation chamber 5 through the air inlet pipe 11 and then enters the rubber hose 9 through the ventilation pipe 10, causing the rubber hose 9 to inflate and expand. After expansion, it squeezes the inner wall of the connecting pipe. The external air pump has a built-in air pressure detector. After detecting that the air pressure inside the rubber hose 9 is sufficient, the air pump is turned off. Then, quickly screw the cover 12 into one end of the air inlet pipe 11 to seal the air inlet pipe 11, which facilitates a second layer of sealing for the connection between the valve body connecting pipe 2 and the external pipe. Then, tighten the nuts 19 on both sides, so that the nuts 19 rotate through the threads of the screw 17, and push the screw 17 to move the pressing block 18 closer to the blocking cover 12 and press it, so that the two sides of the blocking cover 12 are limited. Under the elastic force of the spring 20, the pressing block 18 will further press and limit the blocking cover 12, which will help reduce the displacement of the blocking cover 12.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. Device for enhancing the sealing of a valve of a pipe line, comprising a valve housing (1), characterized in that: Both sides of the valve housing (1) are connected to valve body pipes (2), one end of the valve body pipe (2) is fixedly connected to a flange (3), and the inner wall of the valve body pipe (2) is provided with a sealing assembly. The sealing assembly includes a metal sealing ring (4), which is fixedly connected to the inner wall of the valve body pipe (2). A venting chamber (5) is provided inside the metal sealing ring (4), and an annular sleeve (6) is fixedly connected to one side of the metal sealing ring (4).

2. The pipeline valve seal enhancement device of claim 1, wherein: An inclined surface (7) is provided on one side of the inner wall of the annular sleeve (6), a transition arc surface (8) is provided on one side of the inclined surface (7), and a rubber hose (9) is fixedly connected to one side of the annular sleeve (6).

3. The pipeline valve seal enhancement device of claim 2, wherein: Both sides of the rubber hose (9) are connected to vent pipes (10). The two vent pipes (10) are fixedly connected to the outer walls of the annular sleeve (6) respectively, and one end of the two vent pipes (10) is connected to one side of the metal sealing ring (4).

4. The sealing enhancement device for pipeline valves according to claim 1, characterized in that: An air inlet pipe (11) is connected through the upper surface of the metal sealing ring (4). One end of the air inlet pipe (11) is threadedly connected to a blocking cover (12). The outer wall of the blocking cover (12) has multiple grooves. A sealing ring (13) is provided on one side of the flange (3).

5. The sealing enhancement device for pipeline valves according to claim 1, characterized in that: The upper surface of the valve body connector (2) is provided with a limiting component. The limiting component includes two fixing brackets (14). The two fixing brackets (14) are fixedly connected to the upper surface of the valve body connector (2). A limiting handle (15) is provided on one side of the fixing bracket (14). A round rod (16) and a screw (17) are fixedly connected to one side of the limiting handle (15). The screw (17) is located above the round rod (16).

6. The sealing enhancement device for pipeline valves according to claim 5, characterized in that: One end of the round rod (16) and the screw (17) is fixedly connected to an extrusion block (18), and the screw (17) is threaded with a nut (19), which is rotatably connected to one side of the fixing frame (14).

7. The sealing enhancement device for pipeline valves according to claim 5, characterized in that: Two springs (20) are fixedly connected to one side of the fixing frame (14), wherein the two springs (20) are fixedly connected to one side of the extrusion block (18), and the two springs (20) are respectively sleeved on the outside of the screw (17) and the round rod (16).

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