A valve opening device

Abstract

A valve opening device disclosed by the present invention comprises an electric actuator and a ferrule assembly. The ferrule assembly is detachably connected to the electric actuator. The electric actuator includes an electric wrench which is in transmission connection with the input end of the ferrule assembly. The ferrule assembly includes an outer ring gear ferrule and an inner ring gear ferrule. The outer ring gear ferrule is rotatable relative to the inner ring gear ferrule. A plurality of kidney-shaped holes are provided in the outer peripheral wall of the outer ring gear ferrule along the circumferential direction. Connecting screws are arranged in the kidney-shaped holes. The outer ring gear ferrule is connected to the inner ring gear ferrule through the connecting screws. A plurality of first tooth grooves are provided at the outer peripheral edge of the outer ring gear ferrule, and a plurality of second tooth grooves are provided at the outer peripheral edge of the inner ring gear ferrule. Both the first tooth grooves and the second tooth grooves are inclined. The inclination direction of the first tooth grooves is opposite to that of the second tooth grooves. The first tooth grooves and the second tooth grooves cooperate to clamp the valve handwheel tightly. The outer ring gear ferrule and the inner ring gear ferrule cooperate to be adaptable to valve handwheels of various specifications.

Description

Technical Field

[0001] The present invention relates to the technical field of valve opening and closing devices, and particularly relates to a valve opening device. Background Art

[0002] During industrial operations, operators often need to perform the valve opening operation by turning the valve handwheel. According to different valves, the size specifications of the handwheels are also different. For those handwheels with relatively large torque or that need to be rotated multiple turns to be fully opened or closed, manual operation is often very inconvenient, requiring a large amount of manpower and having a low operation efficiency. To solve this problem, some electric valve opening devices have also emerged on the market. For example, a portable valve opener disclosed in a Chinese utility model patent (authorized announcement number: CN209062970U) includes an electric wrench, a wrench adapter, a ratchet drive head, a spoke, and a valve opener head; the electric wrench, the wrench adapter, the spoke, and the valve opener head are sequentially combined and connected, and the ratchet drive head is arranged between the spoke and the valve opener head or between the wrench adapter and the spoke; when opening the valve, the valve opener fixes the valve opener head on the valve handwheel and drives the valve handwheel to rotate by controlling the rotation of the valve opener head. The valve opener head includes a bracket and a plurality of mechanical claws installed on the bracket. When opening the valve, each adjacent two mechanical claws are fixed on both sides of a spoke of the valve handwheel; a joint for connecting with the spoke or the ratchet drive head is arranged on the bracket, and the bracket is connected with the spoke or the ratchet drive head through this joint. When the valve handwheel includes 3 spokes, the number of mechanical claws on the bracket of the valve opener head can be 6. The valve opening head acts on the circumference of the valve handwheel through a plurality of mechanical claws. A plurality of sub-brackets are circumferentially and equally spaced at the center of the bracket. When the valve handwheel includes 3 spokes, the sub-brackets can be 6; the joint for connecting with the spoke or the ratchet drive head on the bracket is arranged at the center of the bracket; each mechanical claw is respectively installed on each sub-bracket, and each mechanical claw is perpendicular to the plane where the bracket is located, or the end of each mechanical claw away from the sub-bracket inclines towards the center of the bracket. By adopting an electric method, the operation becomes convenient and fast. However, for handwheels of different sizes and specifications, the size and number of spokes are different. When the number of spokes changes, the number of mechanical claws and sub-brackets needs to be adjusted accordingly. In practical applications, this adjustment may be relatively cumbersome, reducing the versatility of the device. Therefore, it is necessary to make improvements. Summary of the Invention

[0003] The purpose of the present invention is to provide a valve opening device aiming at the defects and deficiencies of the prior art, which has a simple and reasonable structure, is convenient to operate, and the outer ring tooth sleeve and the inner ring tooth sleeve cooperate to adapt to valve handwheels of various specifications.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A valve opening device according to the present invention includes an electric actuator and a ferrule assembly. The ferrule assembly is detachably and fixedly connected to the electric actuator. The electric actuator includes an electric wrench, and the output end of the electric wrench is drivingly connected to the input end of the ferrule assembly. The ferrule assembly includes an outer ring tooth ferrule and an inner ring tooth ferrule. The outer ring tooth ferrule is sleeved outside the inner ring tooth ferrule and can rotate relative to the inner ring tooth ferrule. A plurality of kidney-shaped holes are arranged along the circumferential direction on the outer peripheral wall of the outer ring tooth ferrule, and connecting screws are arranged in the kidney-shaped holes. The outer ring tooth ferrule is connected to the inner ring tooth ferrule through the connecting screws. A plurality of first tooth grooves are arranged along the circumferential direction on the outer peripheral edge of the outer ring tooth ferrule, and a plurality of second tooth grooves that cooperate with the first tooth grooves are arranged along the circumferential direction on the outer peripheral edge of the inner ring tooth ferrule. Both the first tooth grooves and the second tooth grooves are inclined, and the inclination direction of the first tooth grooves is opposite to the inclination direction of the second tooth grooves. The first tooth grooves and the second tooth grooves cooperate to clamp the valve handwheel tightly. The electric actuator drives the ferrule assembly to rotate, driving the valve handwheel to rotate.

[0006] Further, the electric actuator further includes a torque and revolution meter. The output end of the electric wrench is drivingly connected to the input end of the torque and revolution meter, and the output end of the torque and revolution meter is drivingly connected to the input end of the ferrule assembly.

[0007] Further, the output end of the torque and revolution meter is drivingly connected to the input end of the outer ring tooth ferrule.

[0008] Further, the electric actuator further includes a connecting flange, and the connecting flange is detachably connected to the front end of the electric wrench. The torque and revolution meter is installed in the connecting flange.

[0009] Further, a torque arm is detachably and fixedly connected to the connecting flange.

[0010] Further, a wrench fixing cover is detachably and fixedly connected to the rear end of the electric wrench. An inner hexagon wrench is detachably and fixedly connected to the wrench fixing cover. A plurality of bolts are detachably and fixedly connected between the wrench fixing cover and the connecting flange, and the plurality of bolts cooperate to form a frame structure. A part of the electric wrench is arranged in the frame structure.

[0011] Further, a first through hole is arranged at the center of the outer ring tooth ferrule, and a second through hole is arranged at the center of the inner ring tooth ferrule. The first through hole and the second through hole are coaxially arranged.

[0012] Further, the ferrule assembly further includes an input shaft and a gear disk. A bevel gear head that meshes with the gear disk is arranged at the output end of the input shaft, and the gear disk is drivingly connected to the outer ring tooth ferrule.

[0013] Further, an internal gear ring portion is provided on the inner wall of the toothed disc, and an external gear ring portion meshing with the internal gear ring portion is provided on the outer ring gear sleeve.

[0014] Further, the sleeve assembly further includes a gland and a shield. The gland and the shield are detachably and fixedly connected. A receiving space is formed inside by the cooperation of the gland and the shield. The bevel gear head and the toothed disc are both arranged in the receiving space.

[0015] The beneficial effects of the present invention are as follows: For a valve opening device of the present invention, an electric actuator and a sleeve assembly are provided. The electric actuator drives the sleeve assembly to rotate. The sleeve assembly cooperates with the valve handwheel to drive the valve handwheel to rotate. The sleeve assembly includes an outer ring gear sleeve and an inner ring gear sleeve. The outer ring gear sleeve is sleeved outside the inner ring gear sleeve and can rotate relative to the inner ring gear sleeve. A plurality of kidney-shaped holes are arranged along the circumferential direction on the outer peripheral wall of the outer ring gear sleeve. The kidney-shaped holes allow the outer ring gear sleeve to rotate within a certain angle. Connecting screws are arranged in the kidney-shaped holes. The outer ring gear sleeve is connected to the inner ring gear sleeve through the connecting screws. The position of the outer ring gear sleeve is fixed by tightening the connecting screws. A plurality of first tooth grooves are arranged along the circumferential direction on the outer peripheral edge of the outer ring gear sleeve. A plurality of second tooth grooves matching with the first tooth grooves are arranged along the circumferential direction on the outer peripheral edge of the inner ring gear sleeve. Both the first tooth grooves and the second tooth grooves are inclined. The inclination direction of the first tooth grooves is opposite to the inclination direction of the second tooth grooves. The first tooth grooves and the second tooth grooves cooperate to form an adjustable clamping gap. During the actual operation process, first loosen the connecting screws, then rotate the outer ring gear sleeve to increase the clamping gap, then sleeved the sleeve assembly on the valve handwheel so that the clamping gap corresponds to the spoke, and then rotate the outer ring gear sleeve to reduce the clamping gap to clamp the valve handwheel. This design enables the sleeve assembly to adapt to valve handwheels with different sizes of spokes. In addition, by providing a plurality of first tooth grooves and a plurality of second tooth grooves, the sleeve assembly can adapt to valve handwheels with different numbers of spokes, with high versatility. The design that the inclination direction of the first tooth grooves is opposite to the inclination direction of the second tooth grooves can prevent the sleeve assembly from being undesirably loosened from the valve handwheel and ensure the stable and reliable connection. Through the cooperation of the outer ring gear sleeve and the inner ring gear sleeve, the sleeve assembly can adapt to various specifications of valve handwheels, improving the versatility and flexibility of the quick-release valve opening device.

[0016] The rear end of the electric wrench is detachably and fixedly connected with a wrench fixing cover. The detachable design facilitates daily maintenance. An inner hexagon wrench is detachably and fixedly connected to the wrench fixing cover. The wrench fixing cover, the connecting flange, and the torque arm are all of detachable designs. Users can flexibly assemble and disassemble according to their actual needs and operating habits, improving the convenience during use. By equipping with an inner hexagon wrench, users can easily disassemble these components, which is convenient for storage and carrying, and can also effectively save storage space. After using at one valve, users only need to use the inner hexagon wrench to quickly and simply carry out the disassembly work, and then move these disassembled components to other valves that need to be used and reassemble them for use. It has high flexibility and convenience, avoiding the inconvenience of handling due to the overall weight of the device, and effectively improving the user experience and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the first embodiment of the present invention during operation;

[0018] Figure 2 is a schematic structural diagram of the first embodiment of the present invention;

[0019] Figure 3 is a schematic cross-sectional structural diagram of the first embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of the first embodiment of the present invention when the ferrule assembly is separated from the electric actuator;

[0021] Figure 5 is an exploded schematic structural diagram of the first embodiment of the present invention;

[0022] Figure 6 is a schematic structural diagram of the outer ring tooth ferrule in the first embodiment of the present invention;

[0023] Figure 7 is a schematic structural diagram of the second embodiment of the present invention;

[0024] Figure 8 is a schematic cross-sectional structural diagram of the second embodiment of the present invention;

[0025] Figure 9 is a schematic structural diagram of the second embodiment of the present invention when the ferrule assembly is separated from the electric actuator;

[0026] Figure 10 is an exploded schematic structural diagram of the second embodiment of the present invention;

[0027] Figure 11 is a schematic connection structure diagram of the bevel gear head and the gear disc;

[0028] Figure 12 It is a schematic structural diagram of a gear disk.

[0029] Figures 1 - 12 In the figure: 1. Electric actuator; 11. Electric wrench; 111. Square output shaft; 112. Hanging ring; 12. Torque and revolution meter; 121. Square hole; 122. Spline shaft; 13. Connecting flange; 14. Torque arm; 15. Wrench fixing cover; 151. Allen wrench; 152. Buckle part; 16. Bolt; 2. Ferrule assembly; 21. Outer ring gear ferrule; 211. Waist-shaped hole; 212. Connecting screw; 213. First tooth groove; 214. Outer gear ring part; 2141. First through hole; 215. First internal spline; 22. Inner ring gear ferrule; 221. Second tooth groove; 222. Second through hole; 23. Input shaft; 231. Bevel gear head; 232. Second internal spline; 24. Gear disk; 241. Inner gear ring part; 25. Pressure cover; 26. Protective cover; 261. Third through hole; 27. Connecting sleeve; 28. Bushing; 3. Electric actuator; 31. Valve handwheel; 311. Inner circle of handwheel; 312. Outer circle of handwheel; 313. Spoke; 4. First bearing; 5. Second bearing; 6. Third bearing; 7. Fourth bearing; 8. Fifth bearing. Specific embodiments

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] As Figures 1 - 12A valve opening device shown includes an electric actuator 1 and a ferrule assembly 2. The ferrule assembly 2 is detachably and fixedly connected to the electric actuator 1. The electric actuator 1 drives the ferrule assembly 2 to rotate. The electric actuator 1 includes an electric wrench 11, and the output end of the electric wrench 11 is in transmission connection with the input end of the ferrule assembly 2 to transmit power. The ferrule assembly 2 includes an outer ring tooth ferrule 21 and an inner ring tooth ferrule 22. The outer ring tooth ferrule 21 is sleeved outside the inner ring tooth ferrule 22 and can rotate relative to the inner ring tooth ferrule 22. A plurality of kidney-shaped holes 211 are arranged on the outer peripheral wall of the outer ring tooth ferrule 21 along the circumferential direction. Specifically, the kidney-shaped holes 211 extend along the circumferential direction of the outer ring tooth ferrule 21. The kidney-shaped holes 211 allow the outer ring tooth ferrule 21 to rotate within a certain angle. Connecting screws 212 are arranged in the kidney-shaped holes 211. The outer ring tooth ferrule 21 is connected to the inner ring tooth ferrule 22 through the connecting screws 212. The position of the outer ring tooth ferrule 21 is fixed by tightening the connecting screws 212. A plurality of first tooth grooves 213 are arranged on the outer peripheral edge of the outer ring tooth ferrule 21 along the circumferential direction. A plurality of second tooth grooves 221 that are matched with the first tooth grooves 213 are arranged on the outer peripheral edge of the inner ring tooth ferrule 22 along the circumferential direction. Both the first tooth grooves 213 and the second tooth grooves 221 are inclined. The inclination direction of the first tooth grooves 213 is opposite to the inclination direction of the second tooth grooves 221. The first tooth grooves 213 and the second tooth grooves 221 cooperate to clamp the valve handwheel 31. The design that the inclination direction of the first tooth grooves 213 is opposite to the inclination direction of the second tooth grooves 221 can prevent the ferrule assembly 2 from being undesirably loosened from the valve handwheel 31. When the electric actuator 1 works, it drives the ferrule assembly 2 to rotate, drives the valve handwheel 31 to rotate, and thus realizes the opening operation of the valve. Compared with the traditional manual operation method, the electric valve opening method significantly improves the valve opening efficiency. It is not only more convenient to operate, but also can complete the valve opening in a short time, greatly improving the work efficiency. Specifically, refer to Figure 1The valve handwheel 31 includes a handwheel inner circle 311 and a handwheel outer circle 312. The handwheel inner circle 311 and the handwheel outer circle 312 are fixedly connected by a spoke 313. The first tooth groove 213 cooperates with the second tooth groove 221 to form an adjustable clamping gap. In actual operation, first loosen the connecting screw 212, then rotate the outer ring gear sleeve 21 to increase the clamping gap, and then put the sleeve assembly 2 on the valve handwheel 31 so that the clamping gap corresponds to the spoke 313, and then rotate the outer ring gear sleeve 21 to adjust the clamping gap. The valve handwheel 31 is clamped with a small clamping gap. This design enables the ferrule assembly 2 to adapt to valve handwheels 31 with spokes 313 of different sizes. In addition, by providing multiple first tooth grooves 213 and multiple second tooth grooves 221, the ferrule assembly 2 can adapt to valve handwheels 31 with different numbers of spokes 313. By matching the outer ring gear ferrule 21 with the inner ring gear ferrule 22, the ferrule assembly 2 can adapt to valve handwheels 31 of various specifications, thereby improving the versatility and flexibility of the quick-release valve opening device.

[0032] The valve opening device described in the present invention is suitable for an electric actuator 3. A conventional electric actuator 3 is usually provided with a valve handwheel 31. The operator realizes the valve opening operation by turning the valve handwheel 31. The valve stem of a part of the electric actuator 3 directly passes through the valve handwheel 31, forming a coaxial rigid connection with the valve handwheel 31 (such as keyway matching or threaded fixation). The valve handwheel 31 is directly sleeved on the extended end of the valve stem. When the valve handwheel 31 is rotated, the valve stem rotates or rises and falls synchronously, directly driving the valve opening and closing components. In addition, the valve stem of another part of the electric actuator 3 does not need to pass through the valve handwheel 31, and the valve handwheel 31 indirectly drives the valve stem through a transmission mechanism. The present invention can be adapted to these two different types of electric actuators 3. The first embodiment of the present invention is suitable for electric actuators 3 whose valve stem does not need to pass through the valve handwheel 31, and the second embodiment of the present invention is suitable for electric actuators 3 whose valve stem needs to pass through the valve handwheel 31.

[0033] See also Figures 1 - 6 Preferably, in the first embodiment, the electric actuator 1 also includes a torque-speed meter 12, the output end of the electric wrench 11 is transmission-connected to the input end of the torque-speed meter 12, and the output end of the torque-speed meter 12 is transmission-connected to the input end of the ferrule assembly 2. The torque-speed meter 12 can reflect the valve opening and closing force and movement speed in real time, avoiding damage to the valve handwheel 31 and the electric actuator 3 due to excessive rotation.

[0034] Preferably, in the first embodiment, the output end of the torque-speed meter 12 is in transmission connection with the input end of the outer ring gear sleeve 21. Specifically, see Figure 3, the electric wrench 11 is provided with a square output shaft 111. One end of the torque and revolution meter 12 is provided with a square hole 121 that mates with the square output shaft 111. The square output shaft 111 is connected into the square hole 121. The other end of the torque and revolution meter 12 is provided with a spline shaft 122. Refer to Figure 4 and Figure 6 , the outer ring gear bushing 21 is provided with a first internal spline 215 that mates with the spline shaft 122. The spline shaft 122 meshes with the first internal spline 215.

[0035] Preferably, the electric wrench 11 is designed with a low voltage, specifically 24 volts. This choice not only ensures the stability and safety of the device but also significantly reduces potential electrical risks. In addition, the electric wrench 11 is preferably equipped with a brushless motor. Compared with traditional brushed motors, this type of motor has higher efficiency and a longer service life. More importantly, the brushless motor does not generate electric sparks during operation. This characteristic makes the electric wrench 11 particularly suitable for explosion-proof areas and enables it to be used safely in flammable and explosive environments, greatly expanding its application range.

[0036] Preferably, refer to Figure 5 , a hanging ring 112 is also provided on the electric wrench 11. Users can easily hang the electric wrench 11 on a tool rack, hook, or other suitable hanging points, thus effectively saving storage space.

[0037] Preferably, in the first embodiment, refer to Figure 5 , the electric actuator 1 further includes a connecting flange 13. The connecting flange 13 is detachably connected to the front end of the electric wrench 11. The detachable design facilitates daily maintenance. The torque and revolution meter 12 is installed inside the connecting flange 13 to ensure stable and reliable connection and prevent the torque and revolution meter 12 from falling off unexpectedly. Preferably, a torque arm 14 is detachably and fixedly connected to the connecting flange 13 for easy daily maintenance. The torque arm 14 can well balance the torque generated during operation, ensuring that the electric wrench 11 can maintain stability and precision during work, thereby greatly improving work efficiency and operation safety.

[0038] Refer to Figure 5 , a first bearing 4 is provided between the connecting flange 13 and the outer ring gear bushing 21. The first bearing 4 is a deep groove ball bearing, which can effectively reduce friction and wear and improve the service life.

[0039] Preferably, in the first embodiment, refer to Figure 2The rear end of the electric wrench 11 is detachably fixedly connected with a wrench fixing cover 15. The detachable design facilitates daily maintenance. A hexagonal wrench 151 is detachably fixedly connected to the wrench fixing cover 15. Specifically, a snap-fit portion 152 is provided on the wrench fixing cover 15, and the hexagonal wrench 151 is clamped on the snap-fit portion 152 to ensure a stable and reliable connection. A plurality of bolts 16 are detachably fixedly connected between the wrench fixing cover 15 and the connecting flange 13. The plurality of bolts 16 cooperate to form a frame structure. Part of the electric wrench 11 is arranged in the frame structure to ensure a stable and reliable connection. Preferably, the bolts 16 are hexagonal bolts 16, and the connecting screws 212 are hexagonal screws. The torque arm 14 and the connecting flange 13 are also detachably fixedly connected by hexagonal screws. Whether it is the bolts 16 or the screws, they can be removed by the same hexagonal wrench 151, which greatly improves the convenience of operation and the versatility of the tool.

[0040] See also Figure 5 The wrench fixing cover 15, the connecting flange 13, and the torque arm 14 are all detachable in design. Users can flexibly assemble and disassemble them according to their actual needs and operating habits, which improves the convenience of users during use. In addition, by being equipped with an Allen wrench 151, users can easily disassemble these parts, which is convenient for storage and carrying, and can also effectively save storage space. Specifically, after using a valve, the user only needs to use the Allen wrench 151 to quickly and easily disassemble it, and then move the disassembled parts to other valves that need to be used and reassemble them for use. It has high flexibility and convenience, avoids the inconvenience of carrying caused by the overall weight of the device, and effectively improves user experience and work efficiency.

[0041] See also Figures 7 - 12 The second embodiment of the present invention is based on the first embodiment, and optimizes and improves the ferrule assembly 2 so that the ferrule assembly 2 can adapt to the electric actuator 3 whose valve stem needs to pass through the valve handwheel 31. The electric actuator 1 of the second embodiment has the same structure as the electric actuator 1 of the first embodiment. In the first embodiment, the center line of the outer ring gear ferrule 21 is coaxial with the center line of the square output shaft 111 of the electric wrench 11. In the second embodiment, the center line of the outer ring gear ferrule 21 is perpendicular to the center line of the square output shaft 111 of the electric wrench 11.

[0042] Preferably, in the second embodiment, see Figure 8 A first through hole 2141 is provided at the center of the outer ring gear sleeve 21, and a second through hole 222 is provided at the center of the inner ring gear sleeve 22. The first through hole 2141 and the second through hole 222 are coaxially arranged to facilitate the passage of the valve stem.

[0043] Preferably, in the second embodiment, the ferrule assembly 2 further includes an input shaft 23 and a gear disk 24. Refer to Figure 11 , a bevel gear head 231 meshing with the gear disk 24 is provided at the output end of the input shaft 23, and the gear disk 24 is in transmission connection with the outer ring gear ferrule 21. Refer to Figure 10 , a second internal spline 232 is provided at one end of the input shaft 23 away from the bevel gear head 231, and the second internal spline 232 is in transmission connection with the spline shaft 122 of the torque and revolution meter 12 to transmit power.

[0044] Preferably, in the second embodiment, refer to Figure 12 , an internal gear ring portion 241 is provided on the inner wall of the gear disk 24. Refer to Figure 10 , the outer ring gear ferrule 21 is provided with an outer gear ring portion 214 meshing with the internal gear ring portion 241, which can effectively transmit power. A first through hole 2141 is provided at the center of the outer gear ring portion 214.

[0045] Preferably, in the second embodiment, refer to Figure 10 , the ferrule assembly 2 further includes a connecting sleeve 27, a gland 25 and a shield 26. The connecting sleeve 27 is arranged between the connecting flange 13 and the shield 26. The input shaft 23 passes through the connecting sleeve 27. A bushing 28 is further arranged in the connecting sleeve 27. The bushing 28 is sleeved outside the input shaft 23. The connecting sleeve 27 is detachably and fixedly connected with the connecting flange 13 and the shield 26, and between the gland 25 and the shield 26 through internal hexagonal screws, which is convenient for the user to quickly disassemble through the internal hexagonal wrench 151. A receiving space is formed inside the cooperation between the gland 25 and the shield 26. The bevel gear head 231 and the gear disk 24 are both arranged in the receiving space to prevent dust and impurities from entering and affecting the use, and improve the service life. The shield 26 is provided with a third through hole 261, and the third through hole 261 is coaxially arranged with the first through hole 2141 and the second through hole 222 to facilitate the valve stem to pass through.

[0046] Refer to Figure 10 , a second bearing 5 is arranged between the connecting sleeve 27 and the connecting flange 13. A third bearing 6 is arranged at the front end of the bushing 28. A fourth bearing 7 is arranged at the rear end of the bushing 28. A fifth bearing 8 is arranged between the gland 25 and the gear disk 24. The second bearing 5, the third bearing 6, the fourth bearing 7 and the fifth bearing 8 are all deep groove ball bearings, which can effectively reduce friction and wear and improve the service life.

[0047] The above is only the preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A valve opening device, characterized in that: It includes an electric actuator and a ferrule assembly. The ferrule assembly is detachably and fixedly connected to the electric actuator. The electric actuator includes an electric wrench, and the output end of the electric wrench is drivingly connected to the input end of the ferrule assembly. The ferrule assembly includes an outer ring tooth ferrule and an inner ring tooth ferrule. The outer ring tooth ferrule is sleeved outside the inner ring tooth ferrule and can rotate relative to the inner ring tooth ferrule. A number of kidney-shaped holes are arranged along the circumferential direction on the outer peripheral wall of the outer ring tooth ferrule, and connecting screws are arranged in the kidney-shaped holes. The outer ring tooth ferrule is connected to the inner ring tooth ferrule through the connecting screws. A number of first tooth grooves are arranged along the circumferential direction on the outer peripheral edge of the outer ring tooth ferrule, and a number of second tooth grooves that cooperate with the first tooth grooves are arranged along the circumferential direction on the outer peripheral edge of the inner ring tooth ferrule. Both the first tooth grooves and the second tooth grooves are inclined. The inclination direction of the first tooth grooves is opposite to that of the second tooth grooves. The first tooth grooves and the second tooth grooves cooperate to clamp the valve handwheel. The valve handwheel includes an inner handwheel circle and an outer handwheel circle, and the inner handwheel circle and the outer handwheel circle are fixedly connected through spokes. The first tooth grooves and the second tooth grooves cooperate to form an adjustable clamping gap, and the clamping gap corresponds to and cooperates with the spokes. The electric actuator drives the ferrule assembly to rotate, driving the valve handwheel to rotate.

2. The valve opening device according to claim 1, characterized in that: The electric actuator further includes a torque and revolution meter. The output end of the electric wrench is drivingly connected to the input end of the torque and revolution meter, and the output end of the torque and revolution meter is drivingly connected to the input end of the ferrule assembly.

3. The valve opening device according to claim 2, wherein: The output end of the torque and revolution meter is drivingly connected to the input end of the outer ring tooth ferrule.

4. A valve opening device according to claim 2, characterized in that: The electric actuator further includes a connecting flange, and the connecting flange is detachably connected to the front end of the electric wrench. The torque and revolution meter is installed in the connecting flange.

5. The valve opening device according to claim 4, wherein: A torque arm is detachably and fixedly connected to the connecting flange.

6. The valve opening device according to claim 4, characterized in that: A wrench fixing cover is detachably and fixedly connected to the rear end of the electric wrench. An inner hexagon wrench is detachably and fixedly connected to the wrench fixing cover. A number of bolts are detachably and fixedly connected between the wrench fixing cover and the connecting flange, and the number of bolts cooperate to form a frame structure. A part of the electric wrench is arranged in the frame structure.

7. The valve opening device according to claim 1, characterized in that: A first through hole is arranged at the center of the outer ring tooth ferrule, and a second through hole is arranged at the center of the inner ring tooth ferrule. The first through hole and the second through hole are coaxially arranged.

8. A valve opening device according to claim 1, characterized in that: The ferrule assembly further includes an input shaft and a gear disk. A bevel gear head that meshes with the gear disk is arranged at the output end of the input shaft, and the gear disk is drivingly connected to the outer ring tooth ferrule.

9. The valve opening device according to claim 8, characterized in that: An inner gear ring part is arranged on the inner wall of the gear disk, and an outer gear ring part that meshes with the inner gear ring part is arranged on the outer ring tooth ferrule.

10. A valve opening device according to claim 8, characterized in that: The ferrule assembly further includes a gland and a shield. The gland and the shield are detachably and fixedly connected. A receiving space is formed inside by the cooperation of the gland and the shield. The bevel gear head and the gear disk are both arranged in the receiving space.

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