A rising stem gate valve

Abstract

The utility model relates to the technical field of rising stem gate valve, especially a rising stem gate valve, solves the problem of incomplete sealing in the prior art, which leads to water flow spraying from the rotating rod. A rising stem gate valve, comprising a valve body, the surface of the valve body is communicated with two inlet and outlet pipes, the top of the valve body is fixedly connected with a cover plate, the surface of the cover plate is provided with a rotating rod, the inside of the rotating rod is threadedly connected with a screw rod, one end of the screw rod is fixedly connected with a T-shaped gate plate, a flow channel is arranged in the inside of the valve body, a sealing ring is fixedly connected in the inside of the flow channel, a sealing mechanism is arranged on the surface of the gate plate, a lubricating mechanism is arranged on the surface of the rotating rod. The utility model ensures the sealing property of the valve body in the use process, does not appear the condition that water flow sprays from the rotating rod, can reduce the abrasion and noise produced by friction, makes the use of the rotating rod more convenient.

Description

Technical Field

[0001] This utility model relates to the field of rising stem gate valve technology, and in particular to a rising stem gate valve. Background Technology

[0002] A rising stem gate valve is a type of gate valve whose opening and closing element is a gate. The gate moves in a direction perpendicular to the direction of fluid flow. It can only be fully open or fully closed, and cannot be used for regulation or throttling.

[0003] Chinese Patent Publication No. CN218543227U discloses a utility model relating to the technical field of valves, particularly a rising stem gate valve. This valve features an additional hard-seal conical sealing pair, resulting in better sealing and reduced leakage. It includes a valve stem, valve cover, gate, and valve body. The valve cover is mounted on the valve body, the valve stem on the valve cover, and the gate on the lower end of the valve stem. A circular groove is provided on the upper part of the valve stem, and an O-ring is placed within the groove. A shaft hole is provided on the upper part of the valve cover, with the O-ring tightly fitting against the inner wall of the shaft hole. The valve cover also includes a sealing block, which is fixedly mounted on the upper part of the valve stem and located below the shaft hole. A shaft hole end face is provided at the lower end of the shaft hole in the valve cover.

[0004] For existing rising stem gate valves, in actual use, incomplete sealing is prone to occur, causing water to spray out from the rotating rod. This results in water leakage regardless of whether the gate valve is opened or closed. Furthermore, the high friction during the opening and closing of the rotating rod generates significant noise and can easily damage the rotating rod and the gate valve, leading to water leakage and affecting its use. Utility Model Content

[0005] The purpose of this invention is to provide a rising stem gate valve that solves the problem in the prior art where incomplete sealing leads to water spraying out from the rotating rod.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A rising stem gate valve includes a valve body with two inlet and outlet pipes connected to its surface. A cover plate is fixedly connected to the top of the valve body, and a rotating rod is threaded through the surface of the cover plate. A screw is threaded inside the rotating rod, and a T-shaped gate plate is fixedly connected to one end of the screw. A flow groove is opened inside the valve body, and a sealing ring is fixedly connected inside the flow groove. A sealing mechanism is provided on the surface of the gate plate, and a lubrication mechanism is provided on the surface of the rotating rod.

[0007] Preferably, the sealing mechanism includes a first sealing gasket fixedly connected to both sides of the gate, the first sealing gasket being in contact with one side of the flow channel, an auxiliary ring fixedly connected to the top of the gate, and a second sealing gasket fixedly connected to the surface of the auxiliary ring, the second sealing gasket being in contact with the surface of the sealing ring.

[0008] Preferably, a sealing plate is fixedly connected inside the flow channel, and one end of the rotating rod is rotatably connected inside the sealing plate.

[0009] Preferably, a third sealing gasket is fixedly connected to the surface of the gate, and the third sealing gasket is far away from the first sealing gasket.

[0010] Preferably, the lubrication mechanism includes a lubrication ring fixedly connected to the surface of the rotating rod, the lubrication ring being located inside the cover plate, and a number of lubrication balls being rotatably connected to the top and bottom of the lubrication ring.

[0011] Preferably, an operating ring is fixedly connected to one end of the rotating rod.

[0012] This utility model has the following beneficial effects: When using a rising stem gate valve, the first and second sealing gaskets seal the closed valve body, preventing water flow from entering the rotating rod and spraying out. When the valve body is opened, the third sealing gasket seals the gate plate and the sealing plate, preventing water from entering the rotating rod and spraying out when the water pressure is too high. This ensures the valve body's sealing performance during use and prevents water from spraying out from the rotating rod. Furthermore, when using the rotating rod, the lubrication ring and lubrication balls reduce the friction between the rotating rod and the cover plate, reducing wear and noise caused by friction and making the rotating rod easier to use. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Schematic cross-sectional view of the middle valve body; Figure 3 for Figure 2 Side view of the lubrication mechanism; Figure 4 for Figure 2 Side view of the removed sealing mechanism; Figure 5 for Figure 2 Side view of the central sealing mechanism.

[0015] In the diagram: 1. Valve body; 2. Inlet / outlet pipe; 3. Cover plate; 4. Rotating rod; 5. Screw; 6. Gate; 7. Flow groove; 8. Sealing ring; 9. Sealing mechanism; 10. Lubrication mechanism; 11. Operating ring; 901. First sealing gasket; 902. Second sealing gasket; 903. Auxiliary ring; 904. Sealing plate; 905. Third sealing gasket; 101. Lubrication ring; 102. Lubrication ball. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Reference Figure 1-5 A rising stem gate valve includes a valve body 1, which is the main body of the gate valve. Two inlet and outlet pipes 2 are connected to the surface of the valve body 1, allowing water to enter and exit the valve body 1. A cover plate 3 is fixedly connected to the top of the valve body 1, sealing the end of the valve body 1 that controls the gate valve's operation to prevent water leakage. A rotating rod 4 passes through the surface of the cover plate 3, and a screw 5 is threaded into the interior of the rotating rod 4. A T-shaped gate plate 6 is fixedly connected to one end of the screw 5. When force is applied to the rotating rod 4 to rotate it, the screw 5 moves, causing the gate plate 6 to move towards the inlet and outlet pipes 2, thus closing the inlet and outlet pipes 2. The gate plate 6 is quadrilateral and located inside a flow channel 7. When the valve body 1 is closed, it will not be driven to rotate by the screw 5. Therefore, it can only move when subjected to external force. The valve body 1 has a flow groove 7 inside. The flow groove 7 is a groove inside the valve body 1, which is used to accommodate the gate plate 6 and facilitate the flow of water. A sealing ring 8 is fixedly connected inside the flow groove 7. The surface of the gate plate 6 is provided with a sealing mechanism 9. Both the sealing ring 8 and the sealing mechanism 9 are structures that improve the sealing performance after closing the flow groove 7. They can ensure that no water leakage occurs when the valve body 1 is closed. The surface of the rotating rod 4 is provided with a lubrication mechanism 10. When the rotating rod 4 needs to be rotated, the friction force on the rotating rod 4 is reduced, so that the rotating rod 4 can be rotated easily. It can also reduce the occurrence of noise, reduce wear and noise, and improve operating efficiency and service life.

[0018] Furthermore, the sealing mechanism 9 includes a first sealing gasket 901 fixedly connected to both sides of the gate plate 6. The first sealing gasket 901 is in contact with one side of the flow channel 7. An auxiliary ring 903 is fixedly connected to the top of the gate plate 6. A second sealing gasket 902 is fixedly connected to the surface of the auxiliary ring 903. The second sealing gasket 902 is in contact with the surface of the sealing ring 8. When it is necessary to close the valve body 1, the rotating rod 4 can be rotated. The rotating rod 4 can drive the gate plate 6 to move towards the inlet and outlet pipes 2, so that the first sealing gasket 901 on the gate plate 6 is in contact with one side of the flow channel 7, separating the two inlet and outlet pipes 2. At this time, the second sealing gasket 902 on the auxiliary ring 903 will be in contact with the sealing ring 8, thereby ensuring that even if water flows into the flow channel 7, it will only be blocked at the two inlet and outlet pipes 2 and will not leak upwards. This ensures that the gate plate 6 closes and seals the flow channel 7 at the inlet and outlet pipes 2, so that the valve body 1 will not be affected by water flow and can effectively close the valve body 1.

[0019] Furthermore, a sealing plate 904 is fixedly connected inside the flow channel 7, and one end of the rotating rod 4 is rotatably connected inside the sealing plate 904. When the rotating rod 4 rotates and drives the gate 6 to move through the screw 5, the space between the flow channel 7 and the cover plate 3 can be sealed through the sealing plate 904 to prevent water from seeping in and causing water to spray out from the rotating rod 4, thus preventing a seal. When it is necessary to open the valve body 1, a force is applied to the rotating rod 4 in the opposite direction, causing the gate 6 to move towards the sealing plate 904 until the gate 6 and the sealing plate 904 are in contact. Therefore, one end of the rotating rod 4 is located inside the sealing plate 904 to ensure that the gate 6 and the sealing plate 904 are in contact.

[0020] Furthermore, a third sealing gasket 905 is fixedly connected to the surface of the gate 6. The third sealing gasket 905 is away from the first sealing gasket 901. When the gate 6 moves toward the sealing plate 904 to open the valve body 1, the third sealing gasket 905 can ensure the sealing between the gate 6 and the sealing plate 904, preventing water from spraying out through the connection between the rotating rod 4 and the cover plate 3 when the valve body 1 is opened.

[0021] Furthermore, the lubrication mechanism 10 includes a lubrication ring 101 fixedly connected to the surface of the rotating rod 4. The lubrication ring 101 is located inside the cover plate 3. Several lubrication balls 102 are rotatably connected to the top and bottom of the lubrication ring 101. When the rotating rod 4 needs to be rotated, the friction between the rotating rod 4 and the cover plate 3 can be reduced by the lubrication balls on the lubrication ring 101, thereby reducing the wear of the rotating rod 4 and the noise when the rotating rod 4 rotates, so that the rotating rod 4 can be used conveniently for a long time.

[0022] Furthermore, an operating ring 11 is fixedly connected to one end of the rotating rod 4. The operating ring 11 can easily apply force to the rotating rod 4, thereby enabling the rotating rod 4 to be easily rotated to open and close the valve body 1.

[0023] In summary: When using the rising stem gate valve, force is applied to the rotating rod 4 via the operating ring 11, causing the rotating rod 4 to rotate on the cover plate 3. This causes the gate plate 6 to move via the screw 5 threadedly connected to the rotating rod 4, allowing the gate plate 6 to move between the two inlet and outlet pipes 2. The first sealing gasket 901 on the gate plate 6 abuts against one side of the flow groove 7, separating the two inlet and outlet pipes 2. After the gate plate 6 moves into position, the second sealing gasket 902 on the auxiliary ring 903 abuts against the sealing ring 8, blocking the other inlet and outlet pipe 2 as well. This seals and blocks the flow groove 7 between the two inlet and outlet pipes 2, preventing any obstruction. Water leaks from above. When it needs to be opened, the operating ring 11 applies a reverse force, causing the rotating rod 4 to rotate and drive the gate 6 away from the inlet / outlet pipe 2 until the gate 6 is in contact with the sealing plate 904. At this time, the valve body 1 is opened, and water can flow. The third sealing gasket 905 can seal the gate 6 and the sealing gasket, thus ensuring the sealing performance. During the opening and closing of the valve body 1, the rotation of the rotating rod 4 can reduce the friction between it and the cover plate 3 through the lubrication ring 101 and lubrication ball 102, which makes the rotation of the rotating rod 4 more convenient and reduces noise and wear between the rotating rod 4 and the cover plate 3.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rising stem gate valve, comprising a valve body (1), characterized in that, The surface of the valve body (1) is connected to two inlet and outlet pipes (2). A cover plate (3) is fixedly connected to the top of the valve body (1). A rotating rod (4) is threaded through the surface of the cover plate (3). A screw (5) is threaded inside the rotating rod (4). A T-shaped gate plate (6) is fixedly connected to one end of the screw (5). A flow groove (7) is opened inside the valve body (1). A sealing ring (8) is fixedly connected inside the flow groove (7). A sealing mechanism (9) is provided on the surface of the gate plate (6). A lubrication mechanism (10) is provided on the surface of the rotating rod (4).

2. A rising stem gate valve according to claim 1, characterized in that, The sealing mechanism (9) includes a first sealing gasket (901) fixedly connected to both sides of the gate (6), the first sealing gasket (901) being in contact with one side of the flow groove (7), an auxiliary ring (903) being fixedly connected to the top of the gate (6), a second sealing gasket (902) being fixedly connected to the surface of the auxiliary ring (903), and the second sealing gasket (902) being in contact with the surface of the sealing ring (8).

3. A rising stem gate valve according to claim 1, characterized in that, A sealing plate (904) is fixedly connected inside the flow channel (7), and one end of the rotating rod (4) is rotatably connected inside the sealing plate (904).

4. A rising stem gate valve according to claim 1, characterized in that, A third sealing gasket (905) is fixedly connected to the surface of the gate (6), and the third sealing gasket (905) is far away from the first sealing gasket (901).

5. A rising stem gate valve according to claim 1, characterized in that, The lubrication mechanism (10) includes a lubrication ring (101) fixedly connected to the surface of the rotating rod (4). The lubrication ring (101) is located inside the cover plate (3). Several lubrication balls (102) are rotatably connected to the top and bottom of the lubrication ring (101).

6. A rising stem gate valve according to claim 1, characterized in that, An operating ring (11) is fixedly connected to one end of the rotating rod (4).

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