Wear-resistant ball valve

Abstract

This invention discloses a wear-resistant ball valve, comprising a valve body, a valve stem disposed within the valve body, one end of the valve stem connected to a ball, a rotating column disposed below the ball, a vertical groove disposed inside the rotating column, a horizontal groove disposed inside the rotating column at one end of the vertical groove and communicating with the vertical groove, a blocking element disposed inside the rotating column to block the vertical groove and the horizontal groove, a first driving element disposed in the valve body connected to the lower end of the rotating column and capable of driving the rotating column to move up and down, and a communicating groove disposed in the valve body communicating with the horizontal groove. This invention has the advantage of discharging liquid retained within the ball.

Description

Technical Field

[0001] This invention relates to the field of ball valves, specifically a wear-resistant ball valve. Background Technology

[0002] A ball valve is a valve in which the ball is driven by the valve stem and rotates around the valve axis. Ball valves are mainly used in pipelines to cut off, distribute, and change the flow direction of the medium. In existing ball valves, after the valve body is closed for a long time, some liquid will remain in the ball. When different fluids flow in, the two fluids will mix together. Therefore, it is necessary to discharge the fluid remaining in the ball after the ball stops the flow. However, current ball valves do not have this function and therefore need to be improved. Summary of the Invention

[0003] The purpose of this invention is to provide a wear-resistant ball valve to solve the problems mentioned in the background art, which has the advantage of draining liquid trapped in the ball.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a wear-resistant ball valve, comprising a valve body, a valve stem disposed within the valve body, a ball connected to one end of the valve stem, a rotating column disposed below the ball, a vertical groove disposed inside the rotating column, a horizontal groove disposed inside the rotating column at one end of the vertical groove and communicating with the vertical groove, a blocking element disposed inside the rotating column to block the vertical groove and the horizontal groove, a first driving element disposed in the valve body connected to the lower end of the rotating column and capable of driving the rotating column to move up and down, and a communicating groove disposed in the valve body communicating with the horizontal groove.

[0005] By adopting the above technical solution, the ball is rotated until it cuts off the valve body. The inside of the valve body will be in a cut-off state. At this time, fluid will be trapped inside the ball. The liquid inside the ball will flow to the top of the rotating column and then into the vertical groove, where it will be blocked by the blocking component. Then, the height of the rotating column is adjusted by the first driving component until the opening of the horizontal groove is aligned with the opening of the connecting groove. Then, the blocking component is activated to connect the vertical groove and the horizontal groove, and the fluid can flow out from the horizontal groove to the outside of the rotating column.

[0006] As a further aspect of the present invention: the first driving component includes two first fixing blocks located below the valve body. A first rotating shaft passes through the first fixing block. A first connecting rod is sleeved at one end of the first rotating shaft. A fixing shaft is fixedly connected to the first connecting rod. A V-shaped plate is sleeved on the fixing shaft. A second connecting rod is sleeved on the other end of the fixing shaft. A fourth rotating shaft passes through one end of the second connecting rod. The fourth rotating shaft is fixedly connected to another fixing block. The first connecting rod and the second connecting rod can rotate around the axis of the first rotating shaft and the fourth rotating shaft, respectively. A first rotating rod is hinged to one end of the V-shaped plate. A second rotating shaft is hinged to one end of the first rotating rod. A rotating groove is provided below the rotating column. The second rotating shaft is located in the rotating groove. A stabilizing member is provided at the other end of the first rotating rod. A rotating motor for driving the first rotating shaft to rotate is provided at one end of the first rotating shaft.

[0007] By adopting the above technical solution, the starting motor drives the first rotating shaft to rotate, which in turn drives the connecting rod to rotate around the first rotating shaft. The rotation of the connecting rod can fix the rotation of the shaft, which in turn drives the V-shaped plate to rotate. The rotation of the V-shaped plate can drive the first rotating rod to rotate up and down in a curved manner, which in turn drives the second rotating shaft to rotate. The rotation of the second rotating shaft can drive the rotating column to rotate. Since the rotating column is located in the valve body, it is restricted to moving only up and down. Therefore, under the drive of the first rotating shaft, the rotating column can only move up and down. The setting of the stabilizing component can enhance the stability of the V-shaped plate rotation. The rotating motor can drive the first rotating shaft to rotate around its own axis.

[0008] As a further embodiment of the present invention: the stabilizing component includes a second fixing block located on one side of the first fixing block, a third rotating shaft passing through the middle of the second fixing block, a stabilizing rod sleeved on the third rotating shaft, and the end of the stabilizing rod away from the third rotating shaft being hinged to one end of the V-shaped plate.

[0009] By adopting the above technical solution, the V-shaped plate rotates, which drives the stabilizer bar to rotate. The stabilizer bar is restricted by the third rotation axis and can only rotate around the third rotation axis, thus playing a stabilizing role. It is worth noting that the end of the stabilizer bar that is hinged to the V-shaped plate moves repeatedly at a certain angle.

[0010] As a further aspect of the present invention: the first connecting rod is integrally connected to stabilizing plates located on both sides of the V-shaped plate.

[0011] By adopting the above technical solution, the volume of the first connecting rod is increased by the stabilizing plate, thereby enhancing the strength of the first connecting rod and making it easier to drive the movement of the V-shaped plate.

[0012] As a further embodiment of the present invention: the blocking component includes a blocking motor disposed within a rotating column, the blocking motor being connected to a gear, the gear meshing with a rack, the rack being fixedly connected to a sealing disc, the rotating column being provided with a slot for the sealing disc to engage, and a sealing ring being provided on one side of the sealing disc.

[0013] By adopting the above technical solution, the starting blocking motor drives the gear to rotate, which in turn drives the rack to move along its own length direction. After the rack moves, it drives the sealing disk to move until a part of the sealing disk is stuck in the slot. At this time, the sealing disk is at the connection between the horizontal slot and the vertical slot, which plays the role of blocking the horizontal slot and the vertical slot.

[0014] As a further embodiment of the present invention: the valve body is provided with a fixing member above the ball for fixing the ball, the fixing member includes arc-shaped plates on both sides of the ball, a moving rod is provided on one side of the arc-shaped plate to drive the arc-shaped plate to move, a moving plate is fixedly connected to one end of the moving rod, and a second driving member is provided on one side of the moving plate to drive the moving plate to move.

[0015] By adopting the above technical solution, when the sphere is used to cut off the ball and does not need to rotate, the second driving component is activated to move the moving plate toward the sphere, which in turn moves the moving rod. After the moving rod moves, it moves the arc plate, which in turn moves the arc plate toward the sphere. The arc plate will press the surface of the sphere, thereby fixing the sphere.

[0016] As a further embodiment of the present invention: the second driving component includes a fixed motor, the fixed motor is connected to a threaded rod, the threaded rod is threadedly connected to a movable plate, the valve body is provided with a moving groove for moving the movable plate, and both the moving groove and the movable plate are configured as cuboids.

[0017] By adopting the above technical solution, the fixed motor is started to drive the threaded rod to rotate. Since the moving plate is in the moving slot and the moving slot and the moving plate are set in a square shape, the moving plate cannot rotate. Therefore, the rotation of the threaded rod drives the moving plate to move.

[0018] As a further embodiment of the present invention: a limiting plate is provided between the arc-shaped plate and the movable plate, and the movable rod passes through the limiting plate.

[0019] By adopting the above technical solution, the setting of the limiting plate can guide the moving rod and increase the stability of the moving rod when it moves.

[0020] As a further embodiment of the present invention: a spring is provided between the limiting plate and the arc-shaped plate, a protrusion is provided on the side of the arc-shaped plate facing the sphere, and a groove is provided on the side of the sphere for the protrusion to be engaged.

[0021] By adopting the above technical solution, the arc-shaped plate, driven by the moving rod, presses against the surface of the ball, and the protrusion will be stuck into the groove, which will restrict the rotation of the ball. The spring can increase the force of the arc-shaped plate on the surface of the ball. After the arc-shaped plate moves away from the ball, the spring will have a reaction force. The spring keeps the arc-shaped plate moving towards the ball, making it easier for the arc-shaped plate to move towards the ball.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] Rotate the ball until it cuts off the valve body. The inside of the valve body will be cut off, and fluid will be trapped inside the ball. The liquid inside the ball will flow to the top of the rotating column and then into the vertical groove, where it will be blocked by the blocking component. Then, use the first driving component to adjust the height of the rotating column until the opening of the horizontal groove is aligned with the opening of the connecting groove. Then, activate the blocking component to connect the vertical groove and the horizontal groove, and the fluid can flow out from the horizontal groove to the outside of the rotating column. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0025] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0026] Figure 3 This is a schematic diagram of the structure in which the transverse groove and the opening of the connecting groove are aligned in the embodiment;

[0027] Figure 4 This is a schematic diagram of the structure that blocks the connection between the motor, gear, and rack in the embodiment.

[0028] Figure 5 This is a schematic diagram of the structure of the first driving component;

[0029] Figure 6 This is a schematic diagram showing the connection relationship between the first rotating shaft, the first connecting rod, and the stabilizing plate.

[0030] Figure 7 This is a schematic diagram of the structure that blocks the connection between the motor, gear, rack, locking rod and circular groove in the embodiment.

[0031] In the diagram: 1. Valve body; 2. Valve stem; 3. Ball; 4. Rotating column; 5. Vertical groove; 6. Horizontal groove; 7. Connecting groove; 8. First fixed block; 9. First rotating shaft; 10. First connecting rod; 11. Fixed shaft; 12. V-shaped plate; 13. First rotating rod; 14. Second rotating shaft; 15. Rotating groove; 16. Rotating motor; 17. Second fixed block; 18. Third rotating shaft; 19. Stabilizing rod; 20. Stabilizing plate; 21. Blocking motor; 22. Gear; 23. Rack; 24. Sealing disc; 25. Slot; 26. Sealing ring; 27. Arc plate; 28. Moving rod; 29. ​​Moving plate; 30. Fixed motor; 31. Threaded rod; 32. Moving groove; 33. Limiting plate; 34. Spring; 35. Protrusion; 36. Groove; 37. Second connecting rod; 38. Fourth rotating shaft; 39. Locking rod; 40. Circular groove. Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In this embodiment of the invention, a wear-resistant ball valve, such as... Figures 1-7 As shown, the valve includes a valve body 1, a valve stem 2 inside the valve body 1, a ball 3 connected to one end of the valve stem 2, a rotating column 4 located below the ball 3, a vertical groove 5 inside the rotating column 4, a horizontal groove 6 located at one end of the vertical groove 5 and communicating with the vertical groove 5, a blocking element inside the rotating column 4 to block the vertical groove 5 and the horizontal groove 6, a first driving element connected to the lower end of the rotating column 4 and capable of driving the rotating column 4 to move up and down, and a communicating groove 7 communicating with the horizontal groove 6.

[0034] The first driving component includes two first fixing blocks 8 located below the valve body 1. A first rotating shaft 9 passes through the first fixing block 8. A first connecting rod 10 is sleeved at one end of the first rotating shaft 9. A fixing shaft 11 is fixedly connected to the first connecting rod 10. A V-shaped plate 12 is sleeved on the fixing shaft 11. A second connecting rod 37 is sleeved on the other end of the fixing shaft 11. A fourth rotating shaft 38 passes through one end of the second connecting rod 37. The fourth rotating shaft 38 is fixedly connected to another fixing block 8. The first connecting rod 10 and the second connecting rod 37 can rotate around the axis of the first rotating shaft 9 and the fourth rotating shaft 38, respectively. A first rotating rod 13 is hinged to one end of the V-shaped plate 12. A second rotating shaft 14 is hinged to one end of the first rotating rod 13. A rotating groove 15 is provided below the rotating column 4. The second rotating shaft 14 is located in the rotating groove 15. A stabilizing element is provided at the other end of the first rotating rod 13. A rotating motor 16 for driving the first rotating shaft 9 is provided at one end of the first rotating shaft 9.

[0035] The stabilizer includes a second fixing block 17 located on one side of the first fixing block 8. A third rotating shaft 18 is passed through the middle of the second fixing block 17. A stabilizer rod 19 is sleeved on the third rotating shaft 18. The end of the stabilizer rod 19 away from the third rotating shaft 18 is hinged to one end of the V-shaped plate 12.

[0036] The first connecting rod 10 is integrally connected to the stabilizing plates 20 located on both sides of the V-shaped plate 12.

[0037] The blocking component includes a blocking motor 21 disposed within the rotating column 4. The blocking motor 21 is connected to a gear 22, which meshes with a rack 23. The rack 23 is fixedly connected to a sealing disc 24. The rotating column 4 is provided with a slot 25 for the sealing disc 24 to engage. A sealing ring 26 is provided on one side of the sealing disc 24. A locking component is disposed within the rotating column 4 above the slot 25. The locking component includes a locking rod 39 above the slot 25. The end of the locking rod 39 facing the sealing disc 24 is rounded. A circular groove 40 is provided on the upper side of the sealing disc 24. When a portion of the sealing disc 24 is in the slot 25, the locking rod 39 can engage in the circular groove 40 due to its own weight. The rounded end of the locking rod 39 facilitates separation of the locking rod 39 from the sealing disc 24 when the sealing disc 24 moves out of the slot 25. The locking rod 39 enhancing the stability of the sealing disc 24 when it is in the circular groove 40.

[0038] The valve body 1 is provided with a fixing member above the ball 3 for fixing the ball 3. The fixing member includes arc-shaped plates 27 on both sides of the ball 3. A moving rod 28 is provided on one side of the arc-shaped plate 27 to drive the arc-shaped plate 27 to move. A moving plate 29 is fixedly connected to one end of the moving rod 28. A second driving member is provided on one side of the moving plate 29 to drive the moving plate 29 to move.

[0039] The second driving component includes a fixed motor 30, which is connected to a threaded rod 31. The threaded rod 31 is threadedly connected to a movable plate 29. The valve body 1 is provided with a movable groove 32 for moving the movable plate 29. Both the movable groove 32 and the movable plate 29 are rectangular parallelepipeds.

[0040] A limiting plate 33 is provided between the arc-shaped plate 27 and the movable plate 29, and the movable rod 28 passes through the limiting plate 33. The limiting plate 33 is fixedly connected to the valve body.

[0041] A spring 34 is provided between the limiting plate 33 and the arc plate 27. A protrusion 35 is provided on the side of the arc plate 27 facing the ball 3. A groove 36 is provided on the side of the ball 3 for the protrusion 35 to be engaged.

[0042] Work process:

[0043] Rotate the ball 3 until it cuts off the valve body 1. The inside of the valve body 1 will be cut off. At this time, fluid will be trapped inside the ball 3. The liquid inside the ball 3 will flow to the top of the rotating column 4 and then into the vertical groove 5. It will be blocked by the blocking component. Then, use the first driving component to adjust the height of the rotating column 4 until the opening of the horizontal groove 6 is aligned with the opening of the connecting groove 7. Then, activate the blocking component to connect the vertical groove 5 and the horizontal groove 6. The fluid can then flow out from the horizontal groove 6 to the outside of the rotating column 4. The starting motor 16 drives the first rotating shaft 9 to rotate, which in turn drives the connecting rod to rotate around the first rotating shaft 9. The rotation of the connecting rod can fix the rotation of the shaft 11, which in turn drives the V-shaped plate 12 to rotate. The rotation of the V-shaped plate 12 can drive the first rotating rod 13 to rotate up and down in a curved pattern, which in turn drives the second rotating shaft 14 to rotate. The rotation of the second rotating shaft 14 can drive the rotating column 4 to rotate. Since the rotating column 4 is inside the valve body 1, it is restricted to moving only up and down. Therefore, under the drive of the first rotating shaft 9, the rotating column 4 can only move up and down. The setting of the stabilizing component can enhance the stability of the rotation of the V-shaped plate 12. The rotating motor 16 can drive the first rotating shaft 9 to rotate around its own axis. After the V-shaped plate 12 rotates, it will drive the stabilizing rod 19 to rotate. The stabilizing rod 19 is restricted by the third rotating shaft 18 and can only rotate around the third rotating shaft 18, which plays a stabilizing role. It is worth noting that the end of the stabilizing rod 19 that is hinged to the V-shaped plate 12 moves repeatedly at a certain angle. The stabilizing plate 20 increases the volume of the first connecting rod 10, thereby enhancing its strength and facilitating better movement of the V-shaped plate 12. The starting of the blocking motor 21 drives the gear 22 to rotate, which in turn drives the rack 23 to move along its length. After the rack 23 moves, it drives the closing disc 24 to move until a portion of the closing disc 24 is engaged in the slot 25. At this point, the closing disc 24 is at the connection between the horizontal slot 6 and the vertical slot 5, effectively blocking the connection between them. When the sphere 3 is cut off and does not need to rotate, the second driving component is activated, causing the moving plate 29 to move towards the sphere 3, which in turn moves the moving rod 28. After the moving rod 28 moves, it drives the arc-shaped plate 27 to move, which in turn moves towards the sphere 3. The arc-shaped plate 27 will press against the surface of the sphere 3, thus fixing the sphere 3. The fixed motor 30 is started, which drives the threaded rod 31 to rotate. Since the moving plate 29 is located in the moving groove 32, and the moving groove 32 and the moving plate 29 are square in shape, the moving plate 29 cannot rotate. Therefore, the rotation of the threaded rod 31 drives the moving plate 29 to move. The limiting plate 33 can guide the moving rod 28 and increase the stability of the moving rod 28 when it moves.The curved plate 27, driven by the moving rod 28, presses against the surface of the ball 3. The protrusion 35 will be inserted into the groove 36, which will restrict the rotation of the ball 3. The spring 34 can increase the force exerted by the curved plate 27 on the surface of the ball 3. After the curved plate 27 moves away from the ball 3, the spring 34 will exert a reaction force. The spring 34 keeps the curved plate 27 moving towards the ball 3, making it easier for the curved plate 27 to move towards the ball 3.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wear-resistant ball valve, comprising a valve body (1), wherein a valve stem (2) is disposed within the valve body (1), and one end of the valve stem (2) is connected to a ball (3), characterized in that: The valve body (1) is provided with a rotating column (4) located below the ball (3). The rotating column (4) has a vertical groove (5) inside and a horizontal groove (6) located at one end of the vertical groove (5) and communicating with the vertical groove (5). The rotating column (4) has a blocking member inside to block the vertical groove (5) and the horizontal groove (6). The valve body (1) is provided with a first driving member connected to the lower end of the rotating column (4) and capable of driving the rotating column (4) to move up and down. The valve body (1) is provided with a communicating groove (7) communicating with the horizontal groove (6). The first driving component includes two first fixing blocks (8) located below the valve body (1). A first rotating shaft (9) passes through the first fixing block (8). A first connecting rod (10) is sleeved on one end of the first rotating shaft (9). A fixing shaft (11) is fixedly connected to the first connecting rod (10). A V-shaped plate (12) is sleeved on the fixing shaft (11). A second connecting rod (37) is sleeved on the other end of the fixing shaft (11). A fourth rotating shaft (38) passes through one end of the second connecting rod (37). The fourth rotating shaft (38) is fixedly connected to another fixed block. The first connecting rod (10) and the second connecting rod (37) can rotate around the axis of the first rotating shaft (9) and the fourth rotating shaft (38) respectively. One end of the V-shaped plate (12) is hinged to the first rotating rod (13), and one end of the first rotating rod (13) is hinged to the second rotating shaft (14). A rotating groove (15) is provided below the rotating column (4), and the second rotating shaft (14) is located in the rotating groove (15). The other end of the first rotating rod (13) is provided with a rotating groove (15). A stabilizing component is provided. One end of the first rotating shaft (9) is equipped with a rotating motor (16) that drives the first rotating shaft (9) to rotate. The ball is rotated until it cuts off the valve body. The inside of the valve body will be cut off. At this time, fluid will be trapped in the ball. The liquid in the ball will flow to the top of the rotating column and then flow into the vertical groove. It is blocked by the blocking component. Then, the height of the rotating column is adjusted by the first driving component until the opening of the horizontal groove is aligned with the opening of the connecting groove. Then, the blocking component is activated to connect the vertical groove and the horizontal groove. The fluid can then flow out from the horizontal groove to the outside of the rotating column.

2. The wear-resistant ball valve according to claim 1, characterized in that: The stabilizer includes a second fixing block (17) located on one side of the first fixing block (8), a third rotating shaft (18) passing through the middle of the second fixing block (17), a stabilizer rod (19) sleeved on the third rotating shaft (18), and the end of the stabilizer rod (19) away from the third rotating shaft (18) is hinged to one end of the V-shaped plate (12).

3. The wear-resistant ball valve according to claim 2, characterized in that: The first connecting rod (10) is integrally connected to the stabilizing plates (20) on both sides of the V-shaped plate (12).

4. The wear-resistant ball valve according to claim 1, characterized in that: The blocking component includes a blocking motor (21) disposed in the rotating column (4), the blocking motor (21) is connected to a gear (22), the gear (22) meshes with a rack (23), the rack (23) is fixedly connected to a sealing disc (24), the rotating column (4) is provided with a slot (25) for the sealing disc (24) to be inserted, and a sealing ring (26) is provided on one side of the sealing disc (24).

5. The wear-resistant ball valve according to claim 1, characterized in that: The valve body (1) is provided with a fixing member above the ball (3) for fixing the ball (3). The fixing member includes an arc plate (27) on both sides of the ball (3). A moving rod (28) is provided on one side of the arc plate (27) to drive the arc plate (27) to move. A moving plate (29) is fixedly connected to one end of the moving rod (28). A second driving member is provided on one side of the moving plate (29) to drive the moving plate (29) to move.

6. A wear-resistant ball valve according to claim 5, characterized in that: The second driving component includes a fixed motor (30), which is connected to a threaded rod (31). The threaded rod (31) is threadedly connected to a movable plate (29). The valve body (1) is provided with a movable groove (32) for moving the movable plate (29). Both the movable groove (32) and the movable plate (29) are rectangular parallelepipeds.

7. A wear-resistant ball valve according to claim 5, characterized in that: A limiting plate (33) is provided between the arc-shaped plate (27) and the movable plate (29), and the movable rod (28) passes through the limiting plate (33).

8. A wear-resistant ball valve according to claim 7, characterized in that: A spring (34) is provided between the limiting plate (33) and the arc plate (27). A protrusion (35) is provided on the side of the arc plate (27) facing the sphere (3). A groove (36) for the protrusion (35) to be inserted is provided on the side of the sphere (3).

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