A valve drive

Abstract

The utility model relates to valve actuator technical field discloses a valve driver, including a valve driver, including rotary drive mechanism, rotary disc and first locking mechanism and second locking mechanism, and rotary drive mechanism is connected with external drive part and rotary disc respectively, is used for driving rotary disc rotation, first locking mechanism and second locking mechanism are spaced apart and set up on the rotary disc along the circumferential direction of rotary disc, and first locking mechanism and second locking mechanism are set apart, and the rotary disc is locked and is connected with the manual turntable of valve through first locking mechanism and second locking mechanism, to drive manual turntable rotation. Adopt the utility model embodiment can through two locking mechanisms and the manual turntable position limiting connection of valve, to realize the locking connection between rotary disc and manual turntable, improve the installation convenience, and can stable drive manual turntable to carry out work.

Description

Technical Field

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

[0002] Current valve actuators can help pipeline valves (such as valves in energy transmission pipelines) quickly switch valve operating states in emergency situations. However, some existing valve actuators have multiple claws at the bottom of a rotating disc, evenly distributed on the circumference at different distances from the rotation axis of the disc. Each claw includes two straight rods spaced apart along the circumference of the disc, which hold the handle of the manual turntable in place. Thus, when the drive disc rotates, it can drive the manual turntable to rotate. Moreover, the claws at different distances are used to secure handles of different sizes.

[0003] However, in actual use, operators need to exert considerable force to engage the locking jaws on the manual rotary table handle, which is time-consuming and labor-intensive, affecting the valve closing operation. Furthermore, during rotation, the locking jaws of the valve actuator are prone to loosening or jumping relative to the manual rotary table, or even detaching from it, affecting the valve driving process and reducing valve closing efficiency. Additionally, setting locking jaws with different fixed distances leads to a more complex valve actuator structure, and valve actuators with fixed size ranges cannot be used on manual rotary tables of other or new sizes, resulting in significant limitations. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a valve actuator that can be limited by two locking mechanisms to the manual turntable of the valve, thereby realizing the locking connection between the turntable and the manual turntable. It is easy to install and can stably drive the manual turntable to work.

[0005] To solve the above-mentioned technical problems, this utility model provides a valve actuator, including a rotary drive mechanism, a rotary disk, a first locking mechanism, and a second locking mechanism. The rotary drive mechanism is connected to an external drive component and the rotary disk respectively, and is used to drive the rotary disk to rotate. The first locking mechanism and the second locking mechanism are both spaced apart on the rotary disk along the circumferential direction of the rotary disk, and the first locking mechanism and the second locking mechanism are staggered. The rotary disk is locked to the manual turntable of the valve through the first locking mechanism and the second locking mechanism to drive the manual turntable to rotate. The first locking mechanism includes a locking member, which is used to limit the connection with the outer ring of the manual turntable below it. The second locking mechanism includes a locking assembly and a locking fastener. The locking fastener is located below the radial connecting rod of the manual turntable. The locking assembly is movably connected to the locking fastener. The locking assembly is used to lock the moving position of the locking fastener so that both the locking assembly and the locking fastener are limited to the radial connecting rod.

[0006] As an improvement to the above solution, the locking member contacts the outer ring of the manual turntable below. The locking member has a locking component at one end away from the turntable. The locking component is located outside the outer ring of the manual turntable. When the locking member is rotated to the locked position, the inner wall of the locking component abuts against the circumferential outer wall of the outer ring.

[0007] As an improvement to the above solution, the locking assembly includes a locking pin and a locking member. The locking pin has a mounting groove, and the end of the locking pin away from the rotating disk has a rotating shaft and an opening communicating with the mounting groove. The two ends of the rotating shaft are respectively connected to the side walls located on both sides of the opening. One end of the locking member is inserted into the opening and rotatably connected to the rotating shaft. The locking member can rotate upward or downward relative to the opening. The other end of the locking member and the locking pin are both limited by the radial connecting rod. The locking member is disposed outside the side walls located on both sides of the opening. The locking member is adapted to the locking member through the opening to limit the rotation of the locking member.

[0008] As an improvement to the above solution, the first locking mechanism further includes a driving wheel and a driven wheel disposed at the bottom of the rotating disk. The driving wheel is connected to the central shaft of the rotating disk, and the central shaft has a hollow structure. The driven wheels are spaced apart around the driving wheel in the circumferential direction. The driven wheels are meshed with the driving wheels. The end of the driven wheel away from the driving wheel is provided with a detachable locking member.

[0009] As an improvement to the above solution, the locking member has a sliding opening and a locking element in the middle. One end of the locking element is fixedly connected to the outer wall of the locking post through the sliding opening. The locking member abuts against the rotating end of the locking buckle located in the opening. The locking member can move upward or downward relative to the locking element through the sliding opening. The locking member has a limiting bending plate that bends and extends in the opposite direction of the locking member near one end. Both the locking member and the limiting bending plate are limited and connected to the rotating end. The other end of the locking element has a locking head that abuts against the four side walls of the sliding opening to fix the locking member.

[0010] As an improvement to the above solution, an upper plate and a lower plate are provided below the rotating disk, and the driving wheel and the driven wheel are installed between the upper plate and the lower plate. The upper plate is detachably connected to the lower plate via a connector. The locking member has a first engaging structure at the end near the driven wheel, and a second disassembly and installation structure, the second engaging structure, at the end of the driven wheel away from the driving wheel. The first engaging structure is engaged with the second engaging structure.

[0011] As an improvement to the above solution, the first engaging structure includes an engaging head disposed on one end of the locking member, with limiting slots on both sides of the engaging head, and an avoidance notch on the side wall of the engaging head facing the upper or lower plate; the second engaging structure includes a placement groove disposed on one end of the driven wheel, with limiting blocks on both sides of the placement groove, and the limiting slot engaging with the limiting blocks; the bottom of the locking member is also provided with a lower limiting plate.

[0012] As an improvement to the above solution, a fastener is provided at the end of the locking pin away from the opening, and a mounting hole is provided on the rotating disk. The mounting hole extends radially along the rotating disk, and one end of the fastener passes through the mounting hole and is fixedly connected to the locking pin to lock the locking pin onto the rotating disk.

[0013] The locking element has an inclined surface at the end away from the opening that is adapted to abut against the radial connecting rod.

[0014] As an improvement to the above solution, the rotary drive mechanism includes a drive housing, a reduction drive mechanism disposed within the drive housing, and at least one adapter disposed on the drive housing. The adapter is used to connect to an external drive component. The reduction drive mechanism includes a power output gear, a power input gear and a transmission gear set that are connected one-to-one with the adapter. The transmission gear set is driven by the power output gear, and the power output gear is fixedly connected to the rotary disk. The adapter is driven by the power input gear and the transmission gear set, or the adapter is driven by the power input gear and the intermediate gear in sequence.

[0015] As an improvement to the above solution, the housing is provided with a handle and a carrying handle on both sides. The handle is also connected to a fixed mounting frame via a connecting chain. The fixed mounting frame is used to fix the housing to an external object.

[0016] Implementing this utility model has the following beneficial effects:

[0017] The rotary disc of this invention can be locked to the manual turntable of the valve via two locking mechanisms, thus achieving a secure connection between the two. This facilitates installation and improves the efficiency of disassembly and installation. Simultaneously, the locking mechanism prevents the valve actuator and the manual turntable from jumping or loosening during operation, ensuring the valve actuator smoothly drives the manual turntable to rotate rapidly. This improves valve operating efficiency and ensures stable operation of the manual turntable.

[0018] In addition, this utility model uses two detachable locking mechanisms to replace the corresponding locking parts and adjust the installation position of the locking pin, so as to adapt and limit the movement of manual turntables of different sizes, realize the locking connection between the valve actuator and manual turntables of different sizes, thereby improving the applicability of the device and meeting the application scenarios of manual turntables of different sizes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation structure of the valve actuator of this utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the installation structure of the valve actuator of this utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the rotating disk and the speed reduction drive mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the rotating disk and the second locking mechanism of this utility model;

[0023] Figure 5 This is a structural schematic diagram of the locking component of this utility model;

[0024] Figure 6 This is a schematic diagram of the locking assembly and locking fastener of this utility model. Figure 1 ;

[0025] Figure 7 This is a schematic diagram of the locking assembly and locking fastener of this utility model. Figure 2 ;

[0026] Figure 8 This is a schematic diagram of the locking assembly and locking fastener of this utility model. Figure 3 . Detailed Implementation

[0027] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 3 As shown, in order to achieve stable driving of pipeline valves, a specific embodiment of this utility model provides a valve driver, which includes a rotary drive mechanism 1, a rotary disk 2, a first locking mechanism 3, and a second locking mechanism 4. The rotary drive mechanism 1 is connected to an external drive component and the rotary disk 2 respectively, so that the external drive component drives the rotary drive mechanism 1 to rotate, thereby driving the rotary disk 2 to rotate.

[0029] The first locking mechanism 3 and the second locking mechanism 4 are both spaced apart on the bottom of the rotating disk 2 along the circumferential direction. The first locking mechanism 3 and the second locking mechanism 4 are staggered to lock different positions of the manual turntable 5. The rotating disk 2 is locked to the manual turntable 5 of the valve through the first locking mechanism 3 and the second locking mechanism 4 to achieve a fixed connection between the two. Thus, when the rotating disk 2 rotates, it can drive the manual turntable 5 to rotate, thereby driving the valve to perform the closing process.

[0030] Specifically, the first locking mechanism 3 includes a locking member 31, which is used to limit the outer ring 51 of the manual turntable 5 below it, so as to at least limit the manual turntable 5 circumferentially and upwardly; the second locking mechanism 4 includes a locking assembly 41 and a locking fastener 42, which is located below the radial connecting rod 52 of the manual turntable 5. The locking assembly 41 is movably connected to the locking fastener 42. The locking assembly 41 is used to lock the moving position of the locking fastener 42 so that both the locking assembly 41 and the locking fastener 42 are limited to the radial connecting rod 52, thereby limiting the manual turntable 5 circumferentially and downwardly. In this way, the manual turntable 5 is limited by the cooperation of the two locking mechanisms, so that the rotating disk 2 and the manual turntable 5 are relatively fixedly connected, improving the ease of installation between the two and making the disassembly and installation of the device more efficient. Meanwhile, the rotary disk 2 is limited to the manual rotary disk 5 through two locking mechanisms. The limiting function can prevent the valve driver and the manual rotary disk 5 from jumping or loosening during operation, ensuring that the valve driver can smoothly drive the manual rotary disk 5 to rotate quickly, which can improve the valve working efficiency and stably drive the manual rotary disk to carry out the work.

[0031] The first locking mechanism 3 and the second locking mechanism 4 together limit the manual turntable 5 in the same circumferential direction (opposite to the direction of rotation when the manual turntable 5 is closed), thereby driving the manual turntable 5 to rotate in the closing direction. Similarly, when the valve is opened, the first locking mechanism 3 and the second locking mechanism 4 together limit the manual turntable 5 in opposite directions, thereby driving the manual turntable 5 to rotate in the opening direction. In this way, the rotation driving force of the manual turntable 5 can be increased, the rotation efficiency of the manual turntable 5 can be increased, and thus the valve opening or closing efficiency can be improved.

[0032] It should be noted that, as Figure 2 As shown, the manual turntable 5 generally includes an outer ring 51, radial connecting rods 52, and a central disc 53. Radial connecting rods 52 are spaced apart around the central disc 53 in its circumferential direction, and both ends of the radial connecting rods 52 are connected to the central disc 53 and the outer ring 51, respectively. Therefore, by limiting and fixing the manual turntable 5 with two locking components, a relatively fixed connection between the rotating disk 2 and the manual turntable 5 can be achieved, while simultaneously driving the manual turntable 5 to rotate in the corresponding circumferential direction.

[0033] Furthermore, such as Figure 1 , 2As shown in Figure 4, the locking member 31 contacts the outer ring portion 51 of the manual turntable 5 below, so that the rotating disk 2 abuts against the manual turntable 5 and limits its upward movement. A locking component 32 is provided at the end of the locking member 31 away from the rotating disk 2. The locking component 32 is located outside the outer ring portion 51 of the manual turntable 5. When the rotating disk 2 rotates, it can drive the locking member 31 to rotate to the locked position. At this time, the inner wall of the locking component 32 abuts against the circumferential outer wall of the outer ring portion 51, thereby limiting the circumferential movement of the manual turntable 5.

[0034] Preferably, the first locking mechanism 3 further includes a driving wheel 33 and a driven wheel 34 disposed at the bottom of the rotating disk 2. The driving wheel 33 is connected to the central shaft 21 of the rotating disk 2. The central shaft 21 is a hollow structure, allowing the rotating shaft of the manual turntable 5 to pass through it, which can serve as a mounting and positioning function. The driven wheels 34 are spaced around the driving wheel 33 in the circumferential direction. The driven wheels 34 are meshed with the driving wheel 33. Each driven wheel 34 is correspondingly disposed with a locking member 31. The end of the driven wheel 34 away from the driving wheel 33 is provided with a detachable locking member 31. When the rotating disk 2 rotates, the central shaft 21 drives the driving wheel 33 to rotate, thereby driving all the driven wheels 34 to rotate. This causes all the locking members 31 to circumferentially abut against the corresponding wall portion of the outer ring portion 51 of the manual turntable 5, thereby driving the manual turntable 5 to rotate. By setting up a drive wheel 33 and a driven wheel 34 to further drive the locking element 31 to a stop with the manual turntable 5, the circumferential driving force of the locking element 31 can be increased, so as to drive the manual turntable 5 to close the valve more efficiently and improve the valve closing efficiency.

[0035] In order to make the locking component 31 adaptable to manual turntables 5 of different sizes, such as Figure 2 , 4As shown in Figure 5, an upper plate 38 and a lower plate 39 are provided below the rotating disk 2. The upper plate 38 is fixedly connected to the rotating disk 2. The driving wheel 33 and the driven wheel 34 are installed between the upper plate 38 and the lower plate 39. The central shaft 21 passes through the upper plate 38 and is connected to the driving wheel 33. Both the driving wheel 33 and the driven wheel 34 can rotate relative to the upper plate 38 and the lower plate 39. The upper plate 38 is detachably connected to the lower plate 39 via a connecting member. The locking member 31 has a first engaging structure 35 at one end near the driven wheel 34, and a second disassembly and installation structure, a second engaging structure 36, at the end of the driven wheel 34 away from the driving wheel 33. The first engaging structure 35 is engaged with the second engaging structure. When it is necessary to replace the locking element 31, the locking element 31 can be operated to separate the first engaging structure 35 from the second engaging structure 36, thereby removing the locking element 31. For manual turntable 5 of the corresponding size, a locking element 31 of the corresponding length can be used to ensure that when the locking element 31 is rotated to the locking position, it can circumferentially abut against the outer ring 51 of the manual turntable 5 to drive the manual turntable 5 to rotate.

[0036] Preferably, in this embodiment, the first engaging structure 35 includes an engaging head 351 disposed on one end of the locking member 31. The engaging head 351 has limiting slots 352 on its left and right sides respectively. The side wall of the engaging head 351 facing the upper plate 38 or the lower plate 39 has an clearance notch 353 to provide clearance space for the upper plate 38 or the lower plate 39 during installation, facilitating the installation of the engaging head 351 in the driven wheel 34. The second engaging structure 36 includes a placement groove 361 disposed on one end of the driven wheel 34. The placement groove 361 has limiting blocks 362 on its left and right sides. When it is necessary to disassemble the locking component 31, the lower plate 39 can be removed first. Then, the locking component 31 can be slid out along the limiting block 362. The new locking component 31 can be slid into the placement groove 361 from bottom to top through the limiting block 362, and the limiting block 362 can be engaged with the limiting groove 352. Finally, the lower plate 39 can be fixedly installed back to its original position to complete the replacement and installation of the locking component 31, so that the locking component 31 is firmly connected to the driven wheel 34 or the rotating disk 2, thereby improving the connection firmness of the locking component 31.

[0037] Preferably, the bottom of the locking component 32 is further provided with a lower limiting plate 37, which can contact the bottom surface of the outer ring portion 51 to further limit and fix the manual turntable 5, thereby improving the connection between the two. Alternatively, a small gap can be left between the lower limiting plate 37 and the bottom surface of the outer ring portion 51 to prevent the manual turntable 5 from becoming excessively loose, while reducing the sliding friction between the locking component 31 and the manual turntable 5, thereby reducing the wear of the locking component 31.

[0038] like Figure 3, 6 As shown in Figures 7 and 8, the locking assembly 41 includes a locking pin 43 and a locking member 44. The locking pin 43 has a mounting groove 431. At the end of the locking pin 43 away from the rotating disk 2, there is a rotating shaft 432 and an opening 433 communicating with the mounting groove 431. Both ends of the rotating shaft 432 are connected to the side walls located on both sides of the opening 433. One end of the locking member 42 is inserted into the opening 433 and rotatably connected to the rotating shaft 432. The locking member 42 can rotate upwards or downwards relative to the opening 433. The other end of the locking member 44 and the locking pin 43 are both connected to the radial connecting rod 52 for limiting the movement of the manual rotating disk 5. The locking member 44 is located outside the side walls located on both sides of the opening 433. The locking member 44 is adapted to the locking member 42 through the opening 433 to limit its rotation. When the rotating disk 2 drives the locking pin 43 to rotate, the locking pin 43 abuts against the side wall of the radial connecting rod 52. At this time, the locking member 42 is located below the radial connecting rod 52. By operating the locking member 44 to unlock the locking member 42, and rotating the locking member 42 so that its lower end face of the radial connecting rod 52 abuts against it, the locking member 44 is operated to lock the locking member 42, so that the locking member 42 and the radial connecting rod 52 are limited and abutted, thereby playing a limiting and fixing role on the manual turntable 5, and fixing the rotating disk 2 and the manual turntable 5.

[0039] like Figures 6 to 8 As shown, the locking member 44 has a sliding opening 441 and a locking member 45 in its middle. One end of the locking member 45 is fixedly connected to the outer wall of the locking post 43 via the sliding opening 441, and the other end of the locking member 45 has a locking head. The locking head abuts against the surrounding side walls of the sliding opening 441 to fix the locking member 44. When the locking member 45 is appropriately loosened, the locking member 44 can move upward or downward relative to the locking member 45 via the sliding opening 441. The locking member 44 abuts against the rotating end of the locking buckle 42 located in the opening 433 to restrict the rotation of the locking buckle 42. The end of the locking buckle 42 that abuts against the locking member 44 or the rotating end is a rectangular plate with a rotating hole for transmission connection with the rotating shaft 432.

[0040] The locking member 44 has a limiting bending plate 442 extending in the opposite direction to the locking member 42 at one end. Both the locking member 44 and the limiting bending plate 442 are limited and connected to the rotating end. When the locking member 44 is in the initial position, the end face of the rotating end of the locking member 42 is completely in contact with the locking member 44. At this time, the locking member 42 is in a horizontal state and is parallel to the rotating disk 2. Before the locking fastener 42 needs to be stopped and engaged, the locking fastener 45 can be operated to loosen the locking member 44 appropriately. When the horizontal locking fastener 42 can be stopped and engaged by the radial connecting rod 52, the locking member 44 is locked directly by the locking fastener 45. When it is necessary to adjust the angle position of the locking fastener 42, the locking member 44 can be pushed to move appropriately by grasping the limiting bending plate 442, so as to change the size of the abutment area or contact area between the rotating end of the locking fastener 42 and the locking member 44 and the limiting bending plate 442, so that the locking fastener 42 has the corresponding space to rotate relative to each other until the locking fastener 42 and the radial connecting rod 52 are properly matched and engaged. Then, the locking member 44 is locked by the locking fastener 45 to limit the continued rotation of the locking fastener 42 and keep the locking fastener 42 in this abutment position. This plays a limiting and fixing role on the manual turntable 5, preventing the manual turntable 5 from jumping and ensuring stable driving of the manual turntable 5 to rotate.

[0041] It should be noted that the downward rotation angle of the locking element 42 is related to the upward movement distance of the locking element 44, similar to a proportional relationship. By adjusting the position of the locking element 44, the locking element 42 can have corresponding rotation space to rotate to the appropriate position. When the locking element 44 is not in contact with the locking element 42 at all, the locking element 42 can rotate freely, such as rotating upward into the mounting groove 431 to accommodate the locking element 42, facilitating the handling of the device.

[0042] In order to accommodate manual turntables 5 of different sizes, such as Figure 3 and 6 As shown, the locking pin 43 has a fastener 46 at the end away from the opening. The rotating disk 2 has a mounting hole 22 extending radially along the rotating disk 2. One end of the fastener 46 passes through the mounting hole 22 and is fixedly connected to the locking pin 43 to lock the locking pin 43 onto the rotating disk 2. When it is necessary to adjust the position of the locking pin 43 and the locking fastener 42, the fastener 46 can be loosened so that the locking pin 43 can move back and forth relative to the mounting hole 22 along the radial direction of the rotating disk 2, thereby adjusting the position of the locking pin 43. This allows the locking fastener 42 at different positions to abut against the radial connecting rod 52 of the manual turntable 5 of different sizes, making it applicable to manual turntables 5 of different sizes with a wide range of applications.

[0043] Preferably, the end of the locking member 42 away from the opening 433 is provided with an inclined surface that is adapted to and abuts against the radial connecting rod 52, so that the locking member 42 abuts against the bottom end surface of the radial connecting rod 52 better, thereby improving the limiting and fixing effect.

[0044] like Figure 1 and Figure 3 As shown, the rotary drive mechanism 1 includes a drive housing 11, a reduction drive mechanism 12 disposed within the drive housing 11, and two adapters 13 disposed on the drive housing 11. The adapters 13 are used to connect to external drive components. The reduction drive mechanism 12 includes a power output gear 121, a power input gear 122 and a transmission gear set 123 corresponding to each adapter 13. The transmission gear set 123 is drive-connected to the power output gear 121, and the power output gear 121 is fixedly connected to the rotary disk 2. One adapter 13 is drive-connected to the transmission gear set 123 via the power input gear 122 to drive the rotary disk 2 to rotate relative to the housing. The other adapter 13 is drive-connected to the transmission gear set 123 via the power input gear 122 and an intermediate gear 124 to drive the rotary disk 2 to rotate relative to the housing. By driving different adapters 13, torque switching can be achieved, thereby adapting to different working conditions, avoiding the situation of "overpowered power for underpowered applications," and reducing power consumption.

[0045] Furthermore, the housing is provided with a handle 14 and a lifting handle 15 on both sides, which facilitates the user to move or carry the valve drive device. The handle 14 is also connected to the fixed mounting bracket 17 via a connecting chain 16. The fixed mounting bracket 17 is used to fix the device to an external fixed object. The handle 14 allows the user to hold the device and fix the drive housing 11. Furthermore, the drive housing 11 can also be fixed by the connecting chain 16 and the fixed mounting bracket 17 without the user having to hold it, thus saving the user's workload.

[0046] In summary, implementing this utility model has the following beneficial effects:

[0047] The rotary disc of this invention can be locked to the manual turntable of the valve via two locking mechanisms, thus achieving a secure connection between the two. This facilitates installation and improves the efficiency of disassembly and installation. Simultaneously, the locking mechanism prevents the valve actuator and the manual turntable from jumping or loosening during operation, ensuring the valve actuator smoothly drives the manual turntable to rotate rapidly. This improves valve operating efficiency and ensures stable operation of the manual turntable.

[0048] In addition, this utility model uses two detachable locking mechanisms to replace the corresponding locking parts and adjust the installation position of the locking pin, so as to adapt and limit the movement of manual turntables of different sizes, realize the locking connection between the valve actuator and manual turntables of different sizes, thereby improving the applicability of the device and meeting the application scenarios of manual turntables of different sizes.

[0049] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A valve actuator, characterized in that, It includes a rotary drive mechanism, a rotary disk, a first locking mechanism, and a second locking mechanism. The rotary drive mechanism is connected to an external drive component and the rotary disk respectively, and is used to drive the rotary disk to rotate. The first locking mechanism and the second locking mechanism are both spaced apart on the rotating disk along the circumferential direction of the rotating disk. The first locking mechanism and the second locking mechanism are staggered. The rotating disk is locked to the manual turntable of the valve through the first locking mechanism and the second locking mechanism to drive the manual turntable to rotate. The first locking mechanism includes a locking member, which is used for limiting connection with the outer ring of the manual turntable below it; The second locking mechanism includes a locking assembly and a locking fastener. The locking fastener is located below the radial connecting rod of the manual turntable. The locking assembly is movably connected to the locking fastener. The locking assembly is used to lock the moving position of the locking fastener so that both the locking assembly and the locking fastener are limitedly connected to the radial connecting rod.

2. The valve actuator as described in claim 1, characterized in that, The locking member contacts the outer ring of the manual turntable below. The locking member has a locking component at one end away from the turntable. The locking component is located outside the outer ring of the manual turntable. When the locking member is rotated to the locked position, the inner wall of the locking component abuts against the circumferential outer wall of the outer ring.

3. The valve actuator as described in claim 1, characterized in that, The locking assembly includes a locking pin and a locking member. The locking pin is provided with a mounting groove. The end of the locking pin away from the rotating disk is provided with a rotating shaft and an opening communicating with the mounting groove. The two ends of the rotating shaft are respectively connected to the side walls located on both sides of the opening. One end of the locking member is inserted into the opening and rotatably connected to the rotating shaft. The locking member can rotate upward or downward relative to the opening. The other end of the locking member and the locking pin are both limited and connected to the radial connecting rod. The locking element is disposed on the outside of the sidewalls located on both sides of the opening. The locking element is adapted to and connected to the locking buckle through the opening to limit the rotation of the locking element.

4. The valve actuator as described in claim 2, characterized in that, The first locking mechanism also includes a driving wheel and a driven wheel disposed at the bottom of the rotating disk. The driving wheel is connected to the central shaft of the rotating disk, and the central shaft is a hollow structure. The driven wheels are spaced apart around the driving wheel in the circumferential direction. The driven wheels are meshed with the driving wheel. The end of the driven wheel away from the driving wheel is provided with a detachable locking member.

5. The valve actuator as described in claim 3, characterized in that, The locking component has a sliding opening and a locking member in the middle, and one end of the locking member is fixedly connected to the outer wall of the locking post through the sliding opening. The locking member abuts against the rotating end of the locking buckle located in the opening. The locking member can move upward or downward relative to the locking fastener through the sliding port. The locking member is provided with a limiting bending plate that bends and extends in the opposite direction of the locking member at one end near the locking buckle. Both the locking member and the limiting bending plate are limited and connected to the rotating end. The other end of the locking device is provided with a locking head, which abuts against the surrounding sidewalls of the sliding opening to fix the locking device.

6. The valve actuator as described in claim 4, characterized in that, The rotating disk is provided with an upper plate and a lower plate below it. The driving wheel and the driven wheel are installed between the upper plate and the lower plate. The upper plate is detachably connected to the lower plate via a connector. The locking member has a first engaging structure at the end near the driven wheel, and a second disassembly and installation structure, a second engaging structure, at the end away from the driving wheel. The first engaging structure is engaged with the second engaging structure.

7. The valve actuator as claimed in claim 6, characterized in that, The first engaging structure includes an engaging head disposed on one end of the locking member, with limiting slots on both sides of the engaging head, and an avoidance notch on the side wall of the engaging head facing the upper or lower plate. The second engaging structure includes a placement groove provided on one end of the driven wheel, and limiting blocks provided on both sides of the placement groove, the limiting groove engaging with the limiting blocks; The bottom of the locking component is also provided with a lower limit plate.

8. The valve actuator as described in claim 3 or 5, characterized in that, The locking pin has a fastener at one end away from the opening, and the rotating disk has a mounting hole that extends radially along the rotating disk. One end of the fastener passes through the mounting hole and is fixedly connected to the locking pin to lock the locking pin onto the rotating disk. The locking element has an inclined surface at the end away from the opening that is adapted to abut against the radial connecting rod.

9. The valve actuator as claimed in claim 1, characterized in that, The rotary drive mechanism includes a drive housing, a reduction drive mechanism disposed within the drive housing, and at least one adapter disposed on the drive housing, the adapter being used to connect to an external drive component; The reduction drive mechanism includes a power output gear, a power input gear and a transmission gear set that are connected one-to-one with the adapter. The transmission gear set is connected to the power output gear in a transmission connection, and the power output gear is fixedly connected to the rotating disk. The adapter is connected to the transmission gear set via the power input gear, or the adapter is connected to the transmission gear set via the power input gear and the intermediate gear in sequence.

10. The valve actuator as claimed in claim 9, characterized in that, The housing is provided with a handle and a carrying handle on both sides. The handle is also connected to a fixed mounting frame via a connecting chain. The fixed mounting frame is used to fix the housing to an external object.

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