Sealing ring for a stop valve

Abstract

This utility model discloses a sealing ring for a gate valve. The key technical features are: a valve body with a partition plate fixedly connected inside, and a flow hole on the top surface of the partition plate; and a first sealing block disposed on the top surface of the partition plate. When the valve body is fixed in a suitable position, the positions of the first and second sealing blocks inside the valve body are adjusted so that they fit against the top and bottom surfaces of the partition plate, respectively, thus isolating the valve body. The sealing ring seals the second sealing block against the partition plate, and the sealing component seals the space between the first sealing block and the partition plate. This reduces the continuous pressure and impact of the medium inside the valve body on the surface of the first sealing block, preventing a small amount of liquid from seeping out between the first sealing block and the partition plate after prolonged use, thereby improving the service life of the valve body.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically to a sealing ring for a gate valve. Background Technology

[0002] A gate valve, also known as a stop valve, is a type of valve with a forced sealing body. Therefore, when the valve body is closed, pressure must be applied to the valve disc to force a leak-proof seal. When the medium enters the valve body from below the valve disc, the resistance that the operating force needs to overcome is the frictional force of the valve stem and packing, plus the thrust generated by the pressure of the medium. The force required to close the valve body is greater than the force required to open it, so the valve stem diameter must be larger; otherwise, the valve stem may bend. According to the connection method, there are three types: flange connection, threaded connection, and welded connection. Since the advent of self-sealing valve bodies, the flow direction of the medium in a gate valve has changed to enter the valve cavity from above the valve disc. In this case, under the action of the medium pressure, the force required to close the valve body is smaller, while the force required to open the valve body is larger, and the valve stem diameter can be reduced accordingly. At the same time, under the action of the medium, this type of valve body is also more airtight.

[0003] Currently, because the medium continues to exert pressure and impact on the valve disc surface after the valve body of the existing gate valve is closed, a small amount of liquid will seep out from the gate valve after a long period of use, affecting the gate valve's shut-off effect. Therefore, a sealing ring for gate valves needs to be designed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a sealing ring for a gate valve to address the aforementioned shortcomings in the prior art.

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

[0006] A sealing ring for a gate valve, comprising:

[0007] A valve body, wherein a partition plate is fixedly connected inside the valve body, and a flow hole is provided on the top surface of the partition plate;

[0008] A first sealing block is disposed on the top surface of the partition plate, and a second sealing block is disposed on the bottom surface of the partition plate;

[0009] The mounting groove is formed on the top surface of the second sealing block, and a sealing ring is fixedly connected inside the mounting groove;

[0010] A sealing component is disposed on the bottom surface of the first sealing block and is used to seal the spacer between the first sealing block and the partition plate.

[0011] Preferably, the sealing component includes:

[0012] A placement groove is formed on the top surface of the first sealing block, and a sealing ring is fixedly connected inside the placement groove;

[0013] A positioning groove is formed on the top surface of the partition plate, and the sealing ring is movably fitted together with the positioning groove.

[0014] Preferably, a fixing tube is fixedly connected inside the valve body, an adjusting rod is threadedly connected inside the fixing tube, a rotating handle is fixedly connected to the outer wall of the adjusting rod, and the bottom end of the adjusting rod is fixedly connected to the top surface of the first sealing block.

[0015] Preferably, the top surface of the second sealing block is provided with an adjustment groove, and a rotating rod is threadedly connected inside the adjustment groove. The top surface of the rotating rod is fixedly connected to the bottom surface of the first sealing block.

[0016] Preferably, a limiting groove is formed on the bottom surface of the valve body, and a limiting block is fixedly connected to the bottom surface of the second sealing block, with the limiting block and the limiting groove being movably fitted together.

[0017] Preferably, a connecting ring is fixedly connected to the outer wall of the valve body, and a plurality of connecting holes are provided on one side of the connecting ring.

[0018] In the above technical solution, the sealing ring for a stop valve provided by this utility model has the following advantages:

[0019] By configuring the valve body, once the operator fixes the valve body in a suitable position, and adjusts the positions of the first and second sealing blocks inside the valve body so that the second and first sealing blocks respectively fit against the top and bottom surfaces of the partition plate, a barrier can be formed inside the valve body. At this time, the sealing ring can seal the second sealing block and the partition plate, and the sealing component can seal the space between the first sealing block and the partition plate. This reduces the pressure and impact of the medium inside the valve body on the surface of the first sealing block, and prevents a small amount of liquid from seeping out from between the first sealing block and the partition plate after long-term use, thereby improving the service life of the valve body. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 A three-dimensional structural diagram of an embodiment of a sealing ring for a gate valve according to this utility model. Figure 1 .

[0022] Figure 2 A schematic diagram of the valve body structure provided for an embodiment of a sealing ring for a gate valve according to this utility model. Figure 2 .

[0023] Figure 3 A schematic diagram of the partition plate structure provided in an embodiment of the sealing ring for a gate valve according to this utility model. Figure 3 .

[0024] Figure 4 A schematic diagram of the rotating rod structure provided in an embodiment of the sealing ring for a gate valve according to this utility model. Figure 4 .

[0025] 1. Valve body; 2. Partition plate; 3. Flow hole; 4. First sealing block; 5. Second sealing block; 6. Mounting groove; 7. Sealing ring; 8. Placement groove; 9. Sealing ring; 10. Positioning groove; 11. Fixing tube; 12. Adjusting rod; 13. Rotating handle; 14. Adjusting groove; 15. Rotating rod; 16. Limiting groove; 17. Limiting block; 18. Connecting ring; 19. Connecting hole. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-4 As shown in the figure, a sealing ring for a stop valve provided in this embodiment of the present invention includes a valve body 1, a partition plate 2 fixedly connected inside the valve body 1, a flow hole 3 opened on the top surface of the partition plate 2, a first sealing block 4 provided on the top surface of the partition plate 2, a second sealing block 5 provided on the bottom surface of the partition plate 2, an installation groove 6 opened on the top surface of the second sealing block 5, a sealing ring 7 fixedly connected inside the installation groove 6, and a sealing component provided on the bottom surface of the first sealing block 4 for sealing between the first sealing block 4 and the partition plate 2.

[0028] In this embodiment, by setting the valve body 1, after the operator fixes the valve body 1 in a suitable position, and adjusts the positions of the first sealing block 4 and the second sealing block 5 inside the valve body 1 so that the second sealing block 5 and the first sealing block 4 are respectively attached to the top and bottom surfaces of the partition plate 2, the valve body 1 can be isolated. At this time, the sealing ring 7 can seal the second sealing block 5 and the partition plate 2, and the sealing component can seal the first sealing block 4 and the partition plate 2, thereby reducing the pressure and impact of the medium inside the valve body 1 on the surface of the first sealing block 4, and preventing a small amount of liquid from seeping out from between the first sealing block 4 and the partition plate 2 after long-term use, thereby improving the service life of the valve body 1.

[0029] Specifically, the sealing component includes a placement groove 8, which is formed on the top surface of the first sealing block 4. A sealing ring 9 is fixedly connected inside the placement groove 8. A positioning groove 10 is formed on the top surface of the partition plate 2. The sealing ring 9 and the positioning groove 10 are movably fitted together.

[0030] In this embodiment, by setting a sealing ring 9, when the operator adjusts the position of the first sealing block 4 inside the valve body 1 so that the first sealing block 4 is in contact with the partition plate 2, the sealing ring 9 can seal the space between the partition plate 2 and the first sealing block 4.

[0031] Specifically, a fixed tube 11 is fixedly connected inside the valve body 1. The inner wall of the fixed tube 11 is threaded. An adjusting rod 12 is connected to the inner thread of the fixed tube 11. The outer wall of the adjusting rod 12 is threaded. A rotating handle 13 is fixedly connected to the outer wall of the adjusting rod 12. The bottom end of the adjusting rod 12 is fixedly connected to the top surface of the first sealing block 4.

[0032] In this embodiment, by setting an adjusting rod 12, when the adjusting rod 12 is rotating, the adjusting rod 12 can move up and down inside the fixed tube 11, and during the up and down movement, it can drive the first sealing block 4 to rotate and move up and down.

[0033] Specifically, the top surface of the second sealing block 5 is provided with an adjustment groove 14, the inner wall surface of the adjustment groove 14 is provided with a threaded groove, the inner thread of the adjustment groove 14 is connected to a rotating rod 15, the outer wall surface of the rotating rod 15 is provided with a thread, and the top surface of the rotating rod 15 is fixedly connected to the bottom surface of the first sealing block 4.

[0034] In this embodiment, by setting a first sealing block 4, when the first sealing block 4 rotates, the first sealing block 4 can drive the rotating rod 15 to rotate. Since the rotating rod 15 is threadedly connected to the adjusting groove 14, when the rotating rod 15 rotates, the second sealing block 5 can move inside the valve body 1, thereby adjusting the distance between the first sealing block 4 and the second sealing block 5, so that the first sealing block 4 and the second sealing block 5 can simultaneously fit together with the partition plate 2.

[0035] Specifically, a limiting groove 16 is provided on the bottom surface inside the valve body 1, and a limiting block 17 is fixedly connected to the bottom surface of the second sealing block 5. The limiting block 17 and the limiting groove 16 are movably fitted together.

[0036] In this embodiment, by setting a limiting block 17, since the limiting block 17 is movably sleeved with the limiting groove 16, the limiting block 17 can limit the second sealing block 5, thereby preventing the second sealing block 5 from rotating with the rotating rod 15.

[0037] Specifically, a connecting ring 18 is fixedly connected to the outer wall of the valve body 1, and a number of connecting holes 19 are opened on one side of the connecting ring 18;

[0038] In this embodiment, by setting a connecting ring 18, the operator can easily fix the valve body 1 by connecting the flange to the connecting ring 18.

[0039] Working steps: 1. By setting valve body 1, after the operator fixes valve body 1 in a suitable position, adjust the position of the first sealing block 4 and the second sealing block 5 inside valve body 1 so that the second sealing block 5 and the first sealing block 4 are respectively attached to the top and bottom surfaces of the partition plate 2, which can isolate the inside of valve body 1. At this time, the sealing ring 7 can seal the second sealing block 5 and the partition plate 2. At the same time, the sealing component can seal the first sealing block 4 and the partition plate 2, thereby reducing the pressure and impact of the medium inside valve body 1 on the surface of the first sealing block 4, and preventing a small amount of liquid from seeping out from between the first sealing block 4 and the partition plate 2 after long-term use of valve body 1, thereby improving the service life of valve body 1.

[0040] Second, by setting the adjusting rod 12, when the adjusting rod 12 is rotating, the adjusting rod 12 can move up and down inside the fixed tube 11, and during the up and down movement, it can drive the first sealing block 4 to rotate and move up and down. By setting the first sealing block 4, when the first sealing block 4 is rotating, the first sealing block 4 can drive the rotating rod 15 to rotate. Since the rotating rod 15 is threadedly connected to the adjusting groove 14, when the rotating rod 15 is rotating, the second sealing block 5 can move inside the valve body 1, thereby adjusting the distance between the first sealing block 4 and the second sealing block 5, so that the first sealing block 4 and the second sealing block 5 can be attached to the partition plate 2 at the same time. By setting the limiting block 17, since the limiting block 17 is movably sleeved with the limiting groove 16, the limiting block 17 can limit the second sealing block 5, thereby preventing the second sealing block 5 from rotating with the rotating rod 15.

[0041] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A seal ring for a globe valve, characterized by, include: A valve body (1) is fixedly connected to a partition plate (2) inside the valve body (1), and a flow hole (3) is opened on the top surface of the partition plate (2); A first sealing block (4) is provided on the top surface of the partition plate (2), and a second sealing block (5) is provided on the bottom surface of the partition plate (2). Mounting groove (6) is formed on the top surface of the second sealing block (5), and a sealing ring (7) is fixedly connected inside the mounting groove (6); A sealing component is disposed on the bottom surface of the first sealing block (4) for sealing the spacer plate (2).

2. The sealing ring for a globe valve according to claim 1, wherein The sealing component includes: Placement groove (8), the placement groove (8) is opened on the top surface of the first sealing block (4), and a sealing ring (9) is fixedly connected inside the placement groove (8); The positioning groove (10) is formed on the top surface of the partition plate (2), and the sealing ring (9) is movably fitted together with the positioning groove (10).

3. The sealing ring for a globe valve according to claim 2, wherein The valve body (1) is fixedly connected to a fixed tube (11), and the fixed tube (11) is threadedly connected to an adjusting rod (12). The outer wall of the adjusting rod (12) is fixedly connected to a rotating handle (13), and the bottom end of the adjusting rod (12) is fixedly connected to the top surface of the first sealing block (4).

4. The sealing ring for a globe valve according to claim 3, wherein The top surface of the second sealing block (5) is provided with an adjustment groove (14), and a rotating rod (15) is threadedly connected inside the adjustment groove (14). The top surface of the rotating rod (15) is fixedly connected to the bottom surface of the first sealing block (4).

5. The sealing ring for a globe valve according to claim 3, wherein A limiting groove (16) is provided on the bottom surface inside the valve body (1), and a limiting block (17) is fixedly connected to the bottom surface of the second sealing block (5). The limiting block (17) and the limiting groove (16) are movably fitted together.

6. The sealing ring for a globe valve according to claim 3, wherein A connecting ring (18) is fixedly connected to the outer wall of the valve body (1), and a plurality of connecting holes (19) are provided on one side of the connecting ring (18).

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