A leak-proof sealing structure of a pneumatic regulating valve

Abstract

This utility model belongs to the field of valve technology. When the first sealing ring between the pneumatic control valve and the flange pipe cannot effectively guarantee the sealing performance between the pneumatic control valve and the flange pipe, and water leakage occurs between the pneumatic control valve and the flange pipe, some water will enter the movable groove through the connecting groove. At this time, the leaking water pressure will drive the power component to move, causing the power component to drive the movable ring to move. At the same time, the movable ring drives the second sealing ring to move, causing the second sealing ring to enter the flange pipe, so that the second sealing ring completes the sealing between the pneumatic control valve and the flange pipe, preventing leakage between the pneumatic control valve and the flange pipe. Through this protective sealing structure, leakage at the connection between the pneumatic control valve and the flange pipe can be effectively prevented. Combined with the original installed first sealing ring, it further improves the sealing performance at the connection between the existing pneumatic control valve and the flange pipe, and at the same time reduces the existence of safety hazards to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a leak-proof sealing structure for a pneumatic regulating valve. Background Technology

[0002] Pneumatic control valves are an indispensable part of modern industrial automation control systems. They use compressed air as a power source to drive the valve's movement, achieving precise control of the flow rate of the medium in flange pipes. This type of valve is widely used in many industries such as chemical, petroleum, natural gas, power, and pharmaceutical due to its fast response, high-precision adjustment capability, and good reliability and safety. The anti-leakage sealing design in pneumatic control valves is crucial, directly affecting the valve's performance and service life. The seal in pneumatic control valves includes its own anti-leakage design, as well as the anti-leakage seal at the connection with other flange pipes.

[0003] The sealing mechanism of existing pneumatic control valves is basically achieved through sealing rings. By installing sealing rings at the connection between the pneumatic control valve and the flange, the sealing performance at the connection between the pneumatic control valve and the flange can be ensured. The sealing performance at the connection between the pneumatic control valve and the flange can effectively prevent media leakage and ensure the safe and stable operation of the system. However, the sealing ring installed between the pneumatic control valve and the flange is extremely sensitive to the stability of the installation. In the existing technology, if the sealing ring wears down due to long-term use, it will be unable to effectively guarantee the sealing performance at the connection between the pneumatic control valve and the flange. In this case, the transmitted water will leak, which poses a certain safety hazard. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a leak-proof sealing structure for pneumatic control valves. This solves the problem that if the sealing ring wears down after prolonged use, the sealing performance at the connection between the pneumatic control valve and the flange pipe cannot be effectively guaranteed, which can lead to water leakage and pose a certain safety hazard.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof sealing structure for a pneumatic regulating valve, wherein the sealing structure is installed inside the pneumatic regulating valve, a flange pipe is installed on one side of the pneumatic regulating valve, the sealing mechanism includes a first sealing ring, the first sealing ring is disposed inside the annular groove of the pneumatic regulating valve, the first sealing ring is slidably connected to the annular groove, a movable groove is provided inside the pneumatic regulating valve, and a blocking mechanism is provided inside the movable groove. The blocking mechanism includes two power components, which are respectively disposed inside the movable groove. The two power components are slidably connected to the movable groove. The side wall of the movable groove has multiple connecting grooves that communicate with the annular groove. A movable ring is provided inside the movable groove. The movable ring is slidably connected to the movable groove. One side of the movable ring is slidably connected to the outer surface of the multiple power components. A second sealing ring is fixedly provided on the side of the movable ring away from the multiple power components. The second sealing ring extends out of the movable groove on the side away from the movable ring and extends into the flange pipe.

[0006] As a preferred technical solution of this utility model, the power component includes an arc-shaped block, which is disposed inside the movable groove. A transmission component is fixedly provided on one side of the outer surface of the arc-shaped block, and the side of the transmission component away from the arc-shaped block is slidably connected to the side of the movable ring away from the second sealing ring.

[0007] As a preferred technical solution of this utility model, the transmission component includes a transmission block, one side of which is fixedly connected to one side of the outer surface of the arc-shaped block, and the side of the transmission block away from the arc-shaped block is slidably connected to the side of the movable ring away from the second sealing ring.

[0008] As a preferred embodiment of this invention, the edge of the movable ring near the transmission block is chamfered.

[0009] As a preferred technical solution of this utility model, protective components are provided on both sides of the second sealing ring. One side of the two protective components is fixedly connected to one side of the movable ring, and the side of the two protective components away from the movable ring is slidably connected to the side wall of the movable groove.

[0010] As a preferred embodiment of the present invention, the protective component includes a third sealing ring, one side of which is fixedly connected to one side of the movable ring, and the side of the third sealing ring away from the movable ring is slidably connected to the side wall of the movable groove.

[0011] Compared with the prior art, this utility model provides a leak-proof sealing structure for a pneumatic regulating valve, which has the following advantages: When the first sealing ring between the pneumatic control valve and the flange pipe fails to effectively guarantee the sealing performance, and water leakage occurs between the pneumatic control valve and the flange pipe, some water will enter the movable groove through the connecting groove. The leaking water pressure will then drive the power component to move, causing the power component to drive the movable ring to move. Simultaneously, the movable ring drives the second sealing ring to move, allowing the second sealing ring to enter the flange pipe and complete the seal between the pneumatic control valve and the flange pipe, preventing leakage. This protective sealing structure effectively prevents leakage at the connection between the pneumatic control valve and the flange pipe. Combined with the existing first sealing ring, it further improves the sealing performance at the connection between the existing pneumatic control valve and the flange pipe, while also reducing potential safety hazards to some extent. Attached Figure Description

[0012] Figure 1 A schematic diagram of the overall structure of the anti-leakage sealing structure of the pneumatic regulating valve provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the pneumatic control valve. Figure 3 for Figure 2 The diagram shows a cross-sectional structure. Figure 4 for Figure 3 A schematic diagram of a partial cross-sectional structure is shown. Figure 5 for Figure 2 The diagram shows a partial structure.

[0013] In the diagram: 1. Pneumatic regulating valve; 2. Flange pipe; 3. First sealing ring; 4. Annular groove; 5. Movable groove; 6. Connecting groove; 7. Movable ring; 8. Second sealing ring; 9. Arc-shaped block; 10. Transmission block; 11. Third sealing ring. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-5In this embodiment: a leak-proof sealing structure for a pneumatic regulating valve, the sealing structure being installed inside the pneumatic regulating valve 1, with a flange pipe 2 installed on one side of the pneumatic regulating valve 1, the sealing mechanism including a first sealing ring 3, the first sealing ring 3 being disposed inside an annular groove 4 of the pneumatic regulating valve 1, the first sealing ring 3 being slidably connected to the annular groove 4, a movable groove 5 being opened inside the pneumatic regulating valve 1, a blocking mechanism being provided inside the movable groove 5, the blocking mechanism including two power components, the two power components being respectively disposed inside the movable groove 5, the two power components being slidably connected to the movable groove 5, a plurality of connecting grooves 6 being opened on the side wall of the movable groove 5 communicating with the annular groove 4, a movable ring 7 being provided inside the movable groove 5, the movable ring 7 being slidably connected to the movable groove 5, one side of the movable ring 7 being connected to the annular groove 4, the movable ring 7 being slidably ... Multiple power components are slidably connected on their outer surfaces. A second sealing ring 8 is fixedly provided on the side of the movable ring 7 away from the multiple power components. The second sealing ring 8 extends out of the movable groove 5 on the side away from the movable ring 7 and extends into the flange pipe 2. The power component includes an arc-shaped block 9, which is located inside the movable groove 5. A transmission component is fixedly provided on one side of the outer surface of the arc-shaped block 9. The side of the transmission component away from the arc-shaped block 9 is slidably connected to the side of the movable ring 7 away from the second sealing ring 8. The transmission component includes a transmission block 10. One side of the transmission block 10 is fixedly connected to one side of the outer surface of the arc-shaped block 9. The side of the transmission block 10 away from the arc-shaped block 9 is slidably connected to the side of the movable ring 7 away from the second sealing ring 8. The edge of the movable ring 7 near the transmission block 10 is chamfered.

[0016] The second sealing ring 8 is provided with protective components on both sides. One side of the two protective components is fixedly connected to one side of the movable ring 7, and the side of the two protective components away from the movable ring 7 is slidably connected to the side wall of the movable groove 5. The protective components include a third sealing ring 11. One side of the third sealing ring 11 is fixedly connected to one side of the movable ring 7, and the side of the third sealing ring 11 away from the movable ring 7 is slidably connected to the side wall of the movable groove 5.

[0017] When the second sealing ring 8 enters the flange pipe 2, the third sealing ring 11 will fit against the side wall of the movable groove 5, completing the sealing of the movable groove 5, preventing water leaking between the flange pipe 2 and the pneumatic regulating valve 1 from entering the movable groove 5 from the protrusion of the second sealing ring 8, and at the same time preventing water inside the movable groove 5 from leaking from the protrusion of the second sealing ring 8.

[0018] The working principle and usage process of this utility model are as follows: When the first sealing ring 3 between the pneumatic regulating valve 1 and the flange pipe 2 cannot effectively guarantee the sealing performance between the pneumatic regulating valve 1 and the flange pipe 2, water leakage will occur between the pneumatic regulating valve 1 and the flange pipe 2. Some water will enter the interior of the movable groove 5 through the connecting groove 6. At this time, the leaking water pressure will drive the arc block 9 to move, causing the arc block 9 to drive the transmission block 10 to move inside the movable groove 5. The transmission block 10 drives the movable ring 7 to move through the chamfered bevel of the movable ring 7, causing the movable ring 7 to drive the second sealing ring 8 to extend and enter the interior of the flange pipe 2, so that the second sealing ring 8 completes the sealing between the pneumatic regulating valve 1 and the flange pipe 2, preventing leakage between the pneumatic regulating valve 1 and the flange pipe 2.

[0019] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are 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 leak-proof sealing structure for a pneumatic regulating valve, the sealing structure being installed inside the pneumatic regulating valve (1), wherein a flange pipe (2) is installed on one side of the pneumatic regulating valve (1), characterized in that: This leak-proof sealing structure includes a first sealing ring (3), which is located inside the annular groove (4) of the pneumatic regulating valve (1). The first sealing ring (3) is slidably connected to the annular groove (4). The pneumatic regulating valve (1) has a movable groove (5) inside, and a blocking mechanism is provided inside the movable groove (5). The blocking mechanism includes two power components, which are respectively located inside the movable groove (5). The two power components are slidably connected to the movable groove (5). The side wall of the movable groove (5) has multiple connecting grooves (6) that communicate with the annular groove (4). The movable groove (5) has a movable ring (7) inside, which is slidably connected to the movable groove (5). One side of the movable ring (7) is slidably connected to the outer surface of multiple power components. A second sealing ring (8) is fixedly provided on the side of the movable ring (7) away from the multiple power components. The side of the second sealing ring (8) away from the movable ring (7) extends out of the movable groove (5) and extends into the flange pipe (2).

2. The anti-leakage sealing structure of a pneumatic regulating valve according to claim 1, characterized in that: The power assembly includes an arc-shaped block (9), which is located inside the movable groove (5). A transmission component is fixedly provided on one side of the outer surface of the arc-shaped block (9). The side of the transmission component away from the arc-shaped block (9) is slidably connected to the side of the movable ring (7) away from the second sealing ring (8).

3. The anti-leakage sealing structure of a pneumatic regulating valve according to claim 2, characterized in that: The transmission component includes a transmission block (10), one side of which is fixedly connected to one side of the outer surface of the arc block (9), and the side of the transmission block (10) away from the arc block (9) is slidably connected to the side of the movable ring (7) away from the second sealing ring (8).

4. The anti-leakage sealing structure of a pneumatic regulating valve according to claim 3, characterized in that: The edge of the movable ring (7) near the transmission block (10) is chamfered.

5. The anti-leakage sealing structure of a pneumatic regulating valve according to claim 4, characterized in that: The second sealing ring (8) is provided with protective parts on both sides. One side of the two protective parts is fixedly connected to one side of the movable ring (7), and the side of the two protective parts away from the movable ring (7) is slidably connected to the side wall of the movable groove (5).

6. The anti-leakage sealing structure of a pneumatic regulating valve according to claim 5, characterized in that: The protective component includes a third sealing ring (11), one side of which is fixedly connected to one side of the movable ring (7), and the side of the third sealing ring (11) away from the movable ring (7) is slidably connected to the side wall of the movable groove (5).

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