Linkage ball valve linkage control device

Abstract

The utility model provides a kind of linkage ball valve linkage control device, including box, main bevel gear, main shaft, slave shaft, from bevel gear and handle, the main bevel gear is located in box inner cavity, the main shaft longitudinal connection with main bevel gear, the from bevel gear is engaged with main bevel gear, the slave shaft transverse connection with from bevel gear, the handle is connected on the main shaft upper end, the box is equipped with locating plate.The utility model is through being provided with the locating plate of limiting protruding and the fan-shaped portion of handle lower end, the rotating angle of handle is limited, then it is formed mechanical locking by the cooperation of the locating mechanism in handle interior and the locating slot on locating plate, avoid the risk that handle rotates due to accidental touch or improper operation, improve security and reliability.Adopt flat key connection and detachable locating plate, simplify structure, reduce manufacturing cost.Adopt flexible bearing, have better wear resistance and self-lubricating.

Description

Technical Field

[0001] This utility model relates to the field of valve linkage control, specifically to a linkage control device for a ball valve. Background Technology

[0002] Linked ball valves typically achieve valve linkage control through pneumatic-hydraulic, electro-hydraulic, or bevel gear mechanisms. As key control equipment in pipeline systems, they are widely used in energy, municipal, and industrial fields. Bevel gear linked ball valves are particularly prevalent in industrial pipeline systems due to their efficient torque transmission and rapid shut-off characteristics. However, commonly available bevel gear linked ball valve control devices have complex structures, high manufacturing costs, and lack a limit-locking function on the handle, making them prone to misoperation. Utility Model Content

[0003] The purpose of this utility model is to provide a linkage control device for a ball valve, which solves the technical problems mentioned in the background art, such as the complex structure, high manufacturing cost, lack of limit self-locking function of the handle, and easy misoperation.

[0004] To achieve the above objectives, this utility model provides a linkage control device for a ball valve, comprising a housing, a main bevel gear, a main shaft, a driven shaft, a driven bevel gear, and a handle. The main bevel gear is located within the housing cavity. The main shaft is longitudinally connected to the main bevel gear, and the driven bevel gear meshes with the main bevel gear. The driven shaft is laterally connected to the driven bevel gear. The handle is connected to the upper end of the main shaft. A positioning plate is provided on the housing, which restricts the rotation of the handle between a first position and a second position. A positioning mechanism is provided on the handle, and when the handle rotates to the first position or the second position, the positioning mechanism and the positioning plate form a mechanical lock.

[0005] Furthermore, the positioning plate is provided with a limiting protrusion, and the lower end of the handle is provided with a fan-shaped part that cooperates with the limiting protrusion. When the handle is rotated to the first position or the second position, the fan-shaped part abuts against the limiting protrusion.

[0006] Furthermore, the positioning mechanism includes a positioning block, a spring, and a clamping screw. The spring is located above the positioning block, and the clamping screw is located on the spring and clamps the spring. When the handle is rotated to the first position or the second position, the positioning block is inserted into the positioning groove on the positioning plate.

[0007] Furthermore, the positioning plate is detachably connected to the housing via a slot structure.

[0008] Furthermore, the main shaft is fixedly connected to the main bevel gear via a first flat key; the driven shaft is fixedly connected to the driven bevel gear via a second flat key.

[0009] Furthermore, an end cover is provided on one side of the housing, and the end cover is adjacent to the bevel gear.

[0010] Furthermore, couplings are provided at both ends of the shaft, and connecting blocks are provided on both sides of the housing.

[0011] Furthermore, a flexible main bearing is provided between the main shaft and the housing, and a flexible first slave bearing and a flexible second slave bearing are respectively provided at both ends of the driven shaft. The flexible first slave bearing is embedded in the inner hole of the end cover, and the flexible second slave bearing is embedded in the shoulder of the shaft in the inner cavity of the housing.

[0012] Furthermore, the handle is provided with a handle lever.

[0013] Compared with existing technologies, the advantages of this invention are that by setting a positioning plate with limiting protrusions and a fan-shaped portion at the lower end of the handle, the rotation angle of the handle is limited; and by using a positioning mechanism inside the handle to cooperate with the positioning groove on the positioning plate to form a mechanical lock, the risk of the handle rotating due to accidental contact or improper operation is avoided, thus improving safety and reliability. The use of a flat key connection and a detachable positioning plate simplifies the structure and reduces manufacturing costs. The use of flexible bearings provides better wear resistance and self-lubrication, reducing maintenance needs and, to some extent, absorbing vibration and compensating for installation errors, extending service life. Attached Figure Description

[0014] Figure 1 This is a top view of a ball valve incorporating the concept of this utility model;

[0015] Figure 2 for Figure 1 Top view along the AA direction;

[0016] Figure 3 for Figure 1 An isometric view of the handle and handle lever, which are not shown.

[0017] Figure 4 for Figure 1 The isometric view shows the connection between the positioning plate and the housing;

[0018] Figure 5 for Figure 4 Top view;

[0019] Figure 6 This is a structural diagram of the handle, including the main shaft and the handle lever;

[0020] Figure 7 A schematic diagram of the main bevel gear and the driven bevel gear;

[0021] Figure 8 In order to be in Figure 1 Top view of the base after connecting the ball valve;

[0022] Figure 9 for Figure 8 Sectional view along the BB direction;

[0023] In the diagram, 1. Housing; 2. Main bevel gear; 3. Main shaft; 4. Driven shaft; 5. Coupling; 6. Driven bevel gear; 7. Positioning plate; 8. Handle; 9. Handle lever; 10. Spring; 11. Positioning block; 12. Flexible main bearing; 13. Connecting block; 14. First flat key; 15. Second flat key; 16. Flexible first driven bearing; 17. Flexible second driven bearing; 18. Columnar part; 19. Clamping screw; 20. End cap; 21. Arc-shaped protrusion; 22. Claw; 23. Slot; 24. Positioning slot; 25. Fan-shaped part; 26. Limiting protrusion; 27. Set screw; 28. Positioning mechanism; 29. ​​Screw; 30. Center hole; 31. Connecting screw; 32. Ball valve; 33. Valve stem. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The following describes some embodiments of the present invention in detail with reference to the accompanying drawings.

[0030] like Figure 1-2 As shown, the linkage control device for a ball valve according to this utility model includes a housing 1, a main bevel gear 2, a main shaft 3, a driven shaft 4, a driven bevel gear 6, and a handle 8. The housing 1 is square and has a hollow inner cavity. The main bevel gear 2 and the driven bevel gear 6 are disposed in the inner cavity of the housing 1, and the driven bevel gear 6 meshes with the main bevel gear 2. See the attached diagram for details. Figure 7 The main shaft 3 is longitudinally connected to the main bevel gear 2, with its upper end extending out of the housing 1. The driven shaft 4 is transversely disposed within the cavity of the housing 1, with its right end connected to the driven bevel gear 6. A handle 8 is disposed on the upper end of the main shaft 3 and fixed by screws 29. Rotating the handle 8 causes the main shaft 3 to rotate together, which in turn drives the main bevel gear 2 to rotate. The main bevel gear 2 transmits torque to the meshing driven bevel gear 6, which in turn drives the driven shaft 4 to rotate, thus achieving linkage control. In a preferred embodiment, a first flat key 14 is provided between the main shaft 3 and the main bevel gear 2, and a second flat key 15 is provided between the driven shaft 4 and the driven bevel gear 6. The first flat key 14 is disposed in a groove at the lower end of the main shaft 3, and the second flat key 15 is disposed in a groove at the right end of the driven shaft 4. The flat key connection provides good alignment, reliable torque transmission, and easy disassembly.

[0031] A positioning plate 7 is provided on the housing 1 to restrict the rotation of the handle 8, so that the handle 8 can only rotate between a first position and a second position. A positioning mechanism 28 is provided on the handle 8. When the handle 8 is in the first or second position, the positioning mechanism 28 forms a mechanical lock with the positioning plate 7 to prevent accidental operation of the handle 8. Specifically, the positioning plate 7 is circular and is provided on the housing 1 by a fixed connection or a movable connection. In this embodiment, the positioning plate 7 is detachably connected to the housing 1 by a slot structure. See attached drawing for details. Figure 3-5The upper end of the housing 1 has an arc-shaped protrusion 21 along the circumferential direction, forming a groove 23 between the arc-shaped protrusions 21. The lower end of the positioning plate 7 has a claw 22 that embeds into the groove 23. This detachable connection simplifies the structure, facilitates disassembly and maintenance, and reduces manufacturing costs. The center hole 30 of the positioning plate 7 has an arc-shaped limiting protrusion 26, which receives a waist-shaped positioning groove 24 extending outward along the orthogonal axis. The symmetrical center line of the limiting protrusion 26 coincides with the transverse orthogonal axis. See Appendix. Figure 6 The lower end of the handle 8 is provided with a columnar portion 18 that can extend into the central hole 30 of the positioning plate 7. A fan-shaped portion 25 extends laterally outward from one side of the columnar portion 18. When the handle 8 is rotated until the fan-shaped portion 25 abuts against one side of the limiting protrusion 26, the handle 8 is in the first position. When the handle 8 is rotated until the fan-shaped portion 25 abuts against the other side of the limiting protrusion 26, the handle 8 is in the second position. When the handle 8 is in the first or second position, the positioning mechanism 28 on the handle forms a mechanical lock with the positioning groove 24 of the positioning plate 7.

[0032] Positioning mechanism 28 is symmetrically arranged on handle 8 with spindle 3 as the center. See Appendix. Figure 2 The positioning mechanism 28 includes a positioning block 11, a spring 10, and a clamping screw 19. The positioning block 11 is disposed in a positioning hole on the handle 8, the spring 10 is located above the positioning block 11, and the clamping screw 19 is threaded into the positioning hole to compress the spring 10. The spring 10 forces the lower end of the positioning block 11 to extend beyond the handle 8. During rotation of the handle 8, the bottom of the positioning block 11 slides on the positioning plate 7, and the positioning block 11 presses upward against the spring 10. When the handle 8 is rotated to the first or second position, the spring 10 pushes the positioning block 11 into the positioning groove 24 on the positioning plate 7 to lock the handle 8. It should be noted that this locking is not a strict lock. When the handle 8 is rotated in the opposite direction, the positioning block 11 first undergoes transition friction with the edge of the positioning groove 24, causing the positioning block 11 to gradually retract upward into the positioning hole, releasing the locked state. During the transition from the locked state to the unlocked state, the torque of the handle 8 rotation will be significantly larger, effectively preventing unintended misoperation from causing the handle to rotate. The bottom of the positioning block 11 is preferably arc-shaped. The arc-shaped bottom can reduce friction with the positioning plate 7 and also facilitate the retraction of the positioning block 11 from the locked state into the handle 8. Tightening or loosening the clamping screw 19 can control the compression of the spring 10, thereby adjusting the force of the positioning block 11 extending or retracting.

[0033] See appendix Figure 2An end cover 20 is provided on one side of the housing 1. The end cover 20 is connected to the housing near the driven bevel gear 6 by screws (not shown) arranged parallel to the direction of the driven shaft 4. Connecting blocks 13 are also provided on both sides of the housing 1. The connecting block 13 on the side adjacent to the driven bevel gear 6 is fixed to the end cover 20 by connecting screws 31, and the connecting block 13 on the side away from the driven bevel gear 6 is fixed to the housing 1 by connecting screws 31. Couplings 5 ​​are connected to both ends of the driven shaft 4. The couplings 5 ​​are used to connect to the valve stem 33 of the ball valve 32. See Appendix for details. Figure 8-9 The ball valve 32 is inserted laterally into the connecting block 13, and the valve body of the ball valve 32 is fixed by the set screw 27 provided in the connecting block 13. The valve stem 33 is connected to the coupling 5. When the shaft 4 rotates, it simultaneously drives the couplings 5 ​​on both sides to rotate, thereby synchronously controlling the ball valves 32 on both sides to achieve linkage control.

[0034] To ensure smoother operation between the various transmission mechanisms, preferably, a flexible main bearing 12 is provided between the main shaft 3 and the housing 1, and flexible first driven bearings 16 and flexible second driven bearings 17 are respectively provided at both ends of the driven shaft 4. (See attached diagram) Figure 2 The first flexible follower bearing 16 is embedded in the inner hole of the end cover 20, and the second flexible follower bearing 17 is embedded in the shoulder of the shaft inside the housing 1. The flexible bearings can be made of materials such as PTFE, which are not only wear-resistant and self-lubricating, but also reduce noise during operation.

[0035] Additionally, an extended handle bar 9 can be installed on the handle 8, as shown in the attached image. Figure 1 As shown in Figure 6, the extended handle rod 9 is symmetrically connected to the handle 8. The handle rod 9 can effectively reduce the torque when rotating the handle 8, which is especially suitable for large-diameter linkage ball valves.

[0036] The basic principles and advantages of this utility model have been described above. For those skilled in the art, the above embodiments are merely illustrative of the technical solutions of this utility model and not intended to limit it. Although this 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 or all of the technical features by reading this specification. Any obvious substitutions are within the protection scope of this utility model without departing from its concept.

Claims

1. A linkage control device for a ball valve, comprising a housing (1), a main bevel gear (2), a main shaft (3), a driven shaft (4), a driven bevel gear (6), and a handle (8), characterized in that: The main bevel gear (2) is located in the inner cavity of the housing (1). The main shaft (3) is longitudinally connected to the main bevel gear (2). The driven bevel gear (6) meshes with the main bevel gear (2). The driven shaft (4) is transversely connected to the driven bevel gear (6). The handle (8) is connected to the upper end of the main shaft (3). The housing (1) is provided with a positioning plate (7). The positioning plate (7) restricts the handle (8) from rotating between the first position and the second position. The handle (8) is provided with a positioning mechanism (28). When the handle (8) rotates to the first position or the second position, the positioning mechanism (28) and the positioning plate (7) form a mechanical lock.

2. The linkage control device for a ball valve according to claim 1, characterized in that, The positioning plate (7) is provided with a limiting protrusion (26), and the lower end of the handle (8) is provided with a fan-shaped part (25) that cooperates with the limiting protrusion (26). When the handle (8) is rotated to the first position or the second position, the fan-shaped part (25) abuts against the limiting protrusion (26).

3. The linkage control device for a ball valve according to claim 2, characterized in that, The positioning mechanism (28) includes a positioning block (11), a spring (10) and a clamping screw (19). The spring (10) is located above the positioning block (11), and the clamping screw (19) is located on the spring (10) and clamps the spring (10). When the handle (8) is rotated to the first position or the second position, the positioning block (11) is inserted into the positioning groove (24) on the positioning plate (7).

4. The linkage control device for a ball valve according to claim 3, characterized in that: The positioning plate (7) is detachably connected to the housing (1) via a slot structure.

5. The linkage control device for a ball valve according to claim 4, characterized in that: The main shaft (3) is fixedly connected to the main bevel gear (2) via the first flat key (14), and the driven shaft (4) is fixedly connected to the driven bevel gear (6) via the second flat key (15).

6. The linkage control device for a ball valve according to claim 5, characterized in that: The housing (1) has an end cap (20) on one side, and the end cap (20) is adjacent to the bevel gear (6).

7. The linkage control device for a ball valve according to claim 6, characterized in that: The shaft (4) is provided with couplings (5) at both ends, and the housing (1) is provided with connecting blocks (13) on both sides.

8. The linkage control device for a ball valve according to claim 7, characterized in that: A flexible main bearing (12) is provided between the main shaft (3) and the housing (1). A flexible first slave bearing (16) and a flexible second slave bearing (17) are provided at both ends of the slave shaft (4). The flexible first slave bearing (16) is embedded in the inner hole of the end cover (20), and the flexible second slave bearing (17) is embedded on the shoulder of the inner cavity of the housing (1).

9. A linkage control device for a ball valve according to any one of claims 1-8, characterized in that: The handle (8) is provided with a handle rod (9).

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