Valve actuating mechanism and operation method thereof

Abstract

The invention belongs to the technical field of electric actuating mechanisms, and discloses a valve actuating mechanism and an operation method thereof.The valve actuating mechanism comprises a mounting cover, an actuating shaft rotationally arranged in the mounting cover, shifting forks symmetrically mounted on the outer surface of the actuating shaft and an electric driving part; a pushing plate is fixedly arranged at one end of the pushing shaft, protruding mechanisms are distributed on the outer surface of the pushing shaft up and down, a telescopic adjusting mechanism is arranged at one end of the pushing shaft, and the electric driving part controls the pushing shaft to move transversely through the pushing plate. By means of the designed telescopic adjusting mechanism, an operator can rapidly and conveniently enable the executing mechanism to be switched between an electric mode and a manual mode, more importantly, after manual operation is completed, the protruding mechanism can automatically reset and clamp and fix the shifting fork, position drifting of the valve after manual positioning is effectively prevented, and the safety of the valve is improved. And the operation stability and reliability are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electric actuators, in particular to a valve actuator and an operating method thereof. BACKGROUND

[0002] A valve actuator is an automatic device that drives and controls the opening and closing or adjustment of a valve. It receives external control signals (such as electrical, pneumatic or hydraulic signals) and converts the energy into mechanical movement to accurately operate the valve stem or valve core, thereby achieving automatic control of the flow, pressure or flow direction of the medium (such as liquid or gas) in the pipeline. It is widely used in industries such as petroleum, chemical and power, and is a key component for achieving production automation.

[0003] The existing valve actuators, especially in the case of integrated electric and manual operation, still have some problems. First, the structure is complex and the operation is not convenient during the switching between electric and manual modes. After switching, there is a lack of reliable locking mechanism, and the valve position after manual adjustment may deviate due to vibration and other reasons. Second, the friction between the core transmission components such as the fork and the push rod is large, which relies on regular manual disassembly and lubrication, making maintenance inconvenient and the lubrication effect poor, which may cause wear and increase the operating torque. SUMMARY

[0004] The present application aims to provide a valve actuator and an operating method thereof to solve the problems mentioned in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a valve actuator and an operating method thereof, comprising a mounting cover, a rotating actuator shaft arranged in the mounting cover, a fork symmetrically mounted on the outer surface of the actuator shaft, and an electric drive member, the inside of the mounting cover is laterally sleeved with a push shaft, one end of the push shaft is fixedly provided with a push plate, the outer surface of the push shaft is distributed with a protruding mechanism upward and downward, one end of the push shaft is provided with a telescopic adjusting mechanism, the electric drive member controls the lateral movement of the push shaft through the push plate, and the push shaft controls the deflection of the fork through the protruding mechanism, the top of the actuator shaft is fixedly connected with a manual wheel, the telescopic adjusting mechanism is used to withdraw the protruding mechanism from the fork, and the actuator shaft is directly operated by the manual wheel, and the deflected fork is clamped and fixed by the reset protruding mechanism.

[0006] Preferably, the execution shaft is installed in the installation cover through the outer bearing, the electric drive part comprises an installation cylinder, a threaded shaft, a sliding sleeve plate, a connecting rod and a drive motor, the installation cylinder is fixed on the outer side of the installation cover, the threaded shaft is rotatably sleeved on the end of the installation cylinder, the sliding sleeve plate is threadedly sleeved on the outer side of the threaded shaft, the connecting rod is fixedly connected between the sliding sleeve plate and the push plate, the output shaft of the drive motor is fixedly connected with the threaded shaft, and the push plate is movably sleeved in the installation cylinder.

[0007] Preferably, the upper and lower surfaces of the sliding sleeve plate are provided with clamping plates, and the inner wall of the installation cylinder is provided with clamping grooves.

[0008] Preferably, the convex mechanism comprises an adapting cavity, a convex clamping block and a spring one, the adapting cavity is arranged on the outer surface of the push shaft, one end of the convex clamping block is movably sleeved in the adapting cavity, and one end of the spring one is fixed in the adapting cavity, and the other end of the spring one is fixedly connected with the convex clamping block.

[0009] Preferably, the telescopic adjusting mechanism comprises a compression cavity, a through cavity, a movable plug and an adjusting rod, the compression cavity and the through cavity are both arranged in the push shaft and communicate with each other, the through cavity also communicates with the adapting cavity of the convex mechanism, the movable plug is movably sleeved in the compression cavity, and the adjusting rod is threadedly sleeved on the right end of the push shaft, and one end of the adjusting rod is fixedly connected with the movable plug.

[0010] Preferably, the inner wall of the yoke is provided with a side slit, the yoke is internally provided with an intermediate cavity, the intermediate cavity communicates with the side slit, the outer side of the installation cover is provided with a sliding oil atomization spraying mechanism, the sliding oil atomization spraying mechanism atomizes the sliding oil and inputs the atomized sliding oil into the intermediate cavity, and then sprays the atomized sliding oil to the yoke inner wall area through the side slit, the sliding oil atomization spraying mechanism comprises a conveying mechanism and a spraying mechanism which communicate with each other, the conveying mechanism is used for inputting flowing air flow, and the spraying mechanism is used for spraying sliding oil.

[0011] Preferably, the conveying mechanism comprises an intermediate cylinder, a gas supply part pipe and a communication pipe, the communication pipe is arranged in the yoke and communicates with the intermediate cavity, the gas supply part is fixed on the top of the installation cover, the gas outlet end of the gas supply part communicates with the intermediate cylinder, and the pipe is arranged between the intermediate cylinder and the communication pipe.

[0012] Preferably, the spraying mechanism comprises a storage cylinder, a piston head and a piston rod, the storage cylinder is threadedly installed at the bottom of the intermediate cylinder, the top of the intermediate cylinder is provided with a spraying nozzle, the piston head is movably sleeved in the storage cylinder, the piston rod is movably sleeved at the bottom of the storage cylinder, the upper end of the piston rod is fixedly connected with the piston head, and the storage cylinder internally stores lubricating oil.

[0013] An operating method of a valve actuator, comprising the following steps:

[0014] First step: start the electric drive, control the lateral movement of the push plate, and drive the push shaft to move laterally, and through the protruding mechanism on the push shaft, the yoke is deflected in the inner wall of the yoke, and the actuator shaft is rotated, and the electric control of the valve core is completed.

[0015] Second step: when manual operation is needed, rotate the telescopic adjusting mechanism at the outer end of the push shaft, control the protruding mechanism to exit from the yoke, and after the yoke is released, rotate the manual wheel to directly drive the actuator shaft to rotate, and when the actuator shaft drives the valve core to rotate, the yoke is deflected, and after rotation, the telescopic adjusting mechanism is operated in reverse to reset the protruding mechanism and tightly press and fix between the upper and lower yokes, and the manual wheel is released to complete the manual execution.

[0016] Third step: when the contact area of the yoke and the protruding mechanism needs to be lubricated, start the conveying mechanism, and operate the spray mechanism to make the conveying mechanism blow and atomize the oil sprayed by the spray mechanism and guide it into the yoke, and along the inner wall of the yoke, the lubrication of the contact area is completed.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The telescopic adjusting mechanism of the present application can quickly and conveniently switch the actuator between electric and manual modes, and more importantly, after manual operation is completed, the protruding mechanism can automatically reset and clamp and fix the yoke, effectively preventing the valve from drifting after manual positioning, greatly improving the stability and reliability of the operation.

[0019] 2. The oil atomizing and spraying mechanism of the present application can directly and uniformly apply lubricating oil in the form of oil mist to the surface of the core friction pair (yoke and protruding mechanism), and the lubricating effect is much better than that of traditional manual application, which significantly reduces the transmission resistance, reduces the wear of parts, reduces the operating noise, thereby prolongs the overall service life of the actuator and reduces the maintenance cost.

[0020] 3. The present application integrates electric drive, manual switching, manual locking and online lubrication into one, and the overall structure is compact, the screw drive cooperates with the guide rail limit in the electric drive part, which ensures the stability of linear motion, the manual switching mechanism realizes disengagement by using negative pressure principle, and the spring force realizes reset locking, the action is reliable, the design is ingenious, and the whole actuator can work stably and accurately under various working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure of the present application is shown in the figure;

[0022] Figure 2 is a sectional view of the present application;

[0023] Figure 3 is a schematic view of the cooperation between the push shaft and the fork of the present application;

[0024] Figure 4 is a sectional view of the push shaft of the present application;

[0025] Figure 5 is a sectional view of the delivery mechanism and the ejection mechanism of the present application;

[0026] Figure 6 is a sectional view of the fork of the present application.

[0027] In the figure: 1, mounting cover; 2, execution shaft; 3, fork; 4, push shaft; 5, push plate; 6, electric drive; 61, mounting cylinder; 62, threaded shaft; 63, sliding sleeve; 64, connecting rod; 65, drive motor; 7, protrusion mechanism; 71, matching cavity; 72, protrusion clamping block; 73, spring one; 8, manual wheel; 9, telescopic adjusting mechanism; 91, compression cavity; 92, conduction cavity; 93, movable plug; 94, adjusting rod; 10, side slit; 11, middle cavity; 12, delivery mechanism; 121, middle cylinder; 122, air supply part; 123, guide pipe; 124, communication pipe; 13, ejection mechanism; 131, storage cylinder; 132, piston head; 133, piston rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0029] As Figures 1 to 6 shown, the embodiment of the present application provides a valve execution mechanism and an operating method thereof, which comprises a mounting cover 1, an execution shaft 2 rotatably arranged in the mounting cover 1, a fork 3 symmetrically arranged on the outer surface of the execution shaft 2, and an electric drive 6, and is characterized in that a push shaft 4 is transversely sleeved in the inside of the mounting cover 1, a push plate 5 is fixedly arranged at one end of the push shaft 4, protrusion mechanisms 7 are distributed on the outer surface of the push shaft 4, a telescopic adjusting mechanism 9 is arranged at one end of the push shaft 4, the electric drive 6 controls the transverse movement of the push shaft 4 through the push plate 5, the push shaft 4 controls the deflection of the fork 3 through the protrusion mechanisms 7, a manual wheel 8 is fixedly connected to the top of the execution shaft 2, the telescopic adjusting mechanism 9 is used to withdraw the protrusion mechanisms 7 from the fork 3, and the execution shaft 2 is directly manipulated to rotate through the manual wheel 8, and the fork 3 is clamped and fixed in position through the reset protrusion mechanisms 7 after deflection.

[0030] When the electric drive 6 is started, the push plate 5 is controlled to move laterally, and the push shaft 4 is driven to move laterally, the convex mechanism 7 at the upper and lower parts of the push shaft 4 is driven to move in the inner wall of the yoke 3, the yoke 3 is deflected by the convex mechanism 7, the actuator shaft 2 is driven to rotate, the electric control of the valve core is completed, when manual operation is needed, the telescopic adjusting mechanism 9 at the outer end of the push shaft 4 is rotated, the rotating adjusting rod 94 drives the movable plug 93 to move, the movable plug 93 sucks the gas in the matching cavity 71 of the convex mechanism 7 through the compression cavity 91 and the through cavity 92, the internal gas pressure is reduced, the convex block 72 compresses the spring 73 and enters the matching cavity 71, the convex mechanism 7 is controlled to exit from the yoke 3, the yoke 3 is released from the sleeve, the manual wheel 8 is rotated to directly drive the actuator shaft 2 to rotate, and the actuator shaft 2 drives the valve core to rotate while driving the yoke 3 to deflect, the telescopic adjusting mechanism 9 is operated in the reverse direction after rotation, the convex mechanism 7 is reset and tightly pressed between the upper and lower yokes 3, the manual wheel 8 is released to complete manual operation

[0031] The actuator shaft 2 is installed in the mounting cover 1 through the outer bearing, the electric drive 6 includes a mounting cylinder 61, a threaded shaft 62, a sliding sleeve plate 63, a connecting rod 64 and a drive motor 65, the mounting cylinder 61 is fixed on the outer side of the mounting cover 1, the threaded shaft 62 is rotatably sleeved at the end of the mounting cylinder 61, the sliding sleeve plate 63 is threadedly sleeved on the outer side of the threaded shaft 62, the connecting rod 64 is fixedly connected between the sliding sleeve plate 63 and the push plate 5, the output shaft of the drive motor 65 is fixedly connected with the threaded shaft 62, the push plate 5 is movably sleeved in the inside of the mounting cylinder 61, the upper and lower surfaces of the sliding sleeve plate 63 are provided with clamping plates, the inner wall of the mounting cylinder 61 is provided with clamping grooves, and the clamping plates are slidably sleeved with the clamping grooves.

[0032] The valve core is connected to the bottom of the actuator shaft 2, the valve control is realized by rotating the valve core, the electric drive 6 controls the stable sliding of the sliding sleeve plate 63 through the drive motor 65, and drives the push plate 5 to slide through the connecting rod 64, so as to control the push shaft 4 to drive the convex mechanism 7 to deflect the yoke 3, complete the deflection control, and the clamping plate and the clamping groove make the sliding sleeve plate 63 slide in position.

[0033] The convex mechanism 7 includes a matching cavity 71, a convex block 72 and a spring 73, the matching cavity 71 is formed on the outer surface of the push shaft 4, one end of the convex block 72 is movably sleeved in the matching cavity 71, one end of the spring 73 is fixed in the matching cavity 71, and the other end of the spring 73 is fixedly connected with the convex block 72, the telescopic adjusting mechanism 9 includes a compression cavity 91, a through cavity 92, a movable plug 93 and an adjusting rod 94, the compression cavity 91 and the through cavity 92 are both formed in the push shaft 4 and communicate with each other, the through cavity 92 also communicates with the matching cavity 71 of the convex mechanism 7, the movable plug 93 is movably sleeved in the compression cavity 91, and the adjusting rod 94 is threadedly sleeved at the right end of the push shaft 4, and one end of the adjusting rod 94 is fixedly connected with the movable plug 93.

[0034] The protruding mechanism 7 protrudes through the protruding clamping block 72 and is built in the shift fork 3 to push the shift fork 3, and the movable plug 93 is controlled to move along the compression cavity 91 and suck the gas in the adaptive cavity 71 through the through cavity 92 by rotating the adjusting rod 94, so that the protruding clamping block 72 is controlled to move and hide the compression spring 73 under low pressure of the adaptive cavity 71, and the pushing of the shift fork 3 is released, so that the rotation of the actuator shaft 2 can be directly controlled by operating the hand wheel 8 to achieve manual actuator adjustment, and when the shift fork 3 is deflected, the protruding mechanism 7 is reset, so that the protruding clamping block 72 clamps and fixes between the two groups of shift forks 3 to achieve quick positioning after manual adjustment.

[0035] The inner wall of the shift fork 3 is provided with a side slit 10, the inside of the shift fork 3 is provided with a middle cavity 11, the middle cavity 11 is communicated with the side slit 10, the outer side of the mounting cover 1 is provided with a sliding oil atomization spraying mechanism, the sliding oil atomization spraying mechanism atomizes the sliding oil and inputs it into the middle cavity 11, and sprays it to the inner wall area of the shift fork 3 through the side slit 10. The sliding oil atomization spraying mechanism comprises a conveying mechanism 12 and a spraying mechanism 13 which are communicated with each other, the conveying mechanism 12 is used for inputting flowing gas flow, and the spraying mechanism 13 is used for spraying sliding oil.

[0036] By providing internal flowing gas flow through the conveying mechanism 12, and extruding and spraying lubricating oil through the spraying mechanism 13, the sprayed lubricating oil is blown away by the flowing gas flow and sprayed to the inner wall area of the shift fork 3 through the side slit 10, so that the inner wall of the shift fork 3 and the protruding mechanism 7 are quickly lubricated, the friction of the actuator from left is reduced, the noise is reduced, and the lubrication makes the actuator action smooth.

[0037] The conveying mechanism 12 comprises a middle cylinder 121, a gas supply part 122, a duct 123 and a communication pipe 124, the communication pipe 124 is communicated and arranged in the middle of the shift fork 3 distributed upward and downward and communicated with the middle cavity 11, the gas supply part 122 is fixed on the top of the mounting cover 1, the gas outlet end of the gas supply part 122 is communicated with the middle cylinder 121, the duct 123 is communicated and arranged between the middle cylinder 121 and the communication pipe 124, the spraying mechanism 13 comprises a storage cylinder 131, a piston head 132 and a piston rod 133, the storage cylinder 131 is screw-mounted at the bottom of the middle cylinder 121, the top of the middle cylinder 121 is provided with a spraying nozzle, the piston head 132 is movably sleeved in the storage cylinder 131, the piston rod 133 is movably sleeved at the bottom of the storage cylinder 131, the upper end of the piston rod 133 is fixedly connected with the piston head 132, and the storage cylinder 131 stores lubricating oil.

[0038] By inputting flowing gas flow through the gas supply part 122, the atomized oil is quickly guided into the inside of the shift fork 3 upward and downward through the communication pipe 124, the screw-mounted spraying mechanism 13 is convenient for dismounting and refilling, and the spraying mechanism 13 specifically simulates a "syringe mechanism" to achieve the required spraying treatment, and is convenient to operate.

[0039] When the contact area of the yoke 3 and the protruding mechanism 7 needs to be lubricated, the air supply part 122 provides compressed air, the air flows through the intermediate cylinder 121, and the operator pushes the piston rod 133 of the spray mechanism 13, so that the lubricating oil in the storage cylinder 131 is sprayed from the spray nozzle at the top, the high-speed flowing air blows and atomizes the sprayed oil droplets, forms an oil mist, so that the oil mist is accurately delivered into the middle cavity 11 of the yoke 3 through the conduit 123 and the communication pipe 124, and finally uniformly sprayed on the contact surface of the yoke inner wall and the protruding block 72 through the side slit 10, realizing efficient and uniform online lubrication.

[0040] An operating method of a valve actuator, comprising the following operating steps:

[0041] First step: start the electric drive 6, control the transverse movement of the push plate 5, and drive the transverse movement of the push shaft 4, deflect the yoke 3 by the protruding mechanism 7 on the push shaft 4, drive the rotation of the actuator shaft 2, and complete the electric control of the valve core;

[0042] Second step: when manual operation is needed, rotate the telescopic adjusting mechanism 9 at the outer end of the push shaft 4 to control the protruding mechanism 7 to exit from the yoke 3, and then rotate the hand wheel 8 to directly drive the rotation of the actuator shaft 2, and the rotation of the actuator shaft 2 drives the deflection of the yoke 3, and then reverse the telescopic adjusting mechanism 9 to reset the protruding mechanism 7 and tightly press and fix the yoke 3, and then release the hand wheel 8 to complete the manual operation;

[0043] Third step: when the contact area of the yoke 3 and the protruding mechanism 7 needs to be lubricated, start the conveying mechanism 12, and operate the spray mechanism 13, so that the conveying mechanism 12 conveys the oil liquid sprayed by the spray mechanism 13 to the yoke 3 after being blown and atomized, and sprays along the inner wall of the yoke 3, and completes the lubrication of the contact area.

[0044] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A valve actuator comprising a mounting housing (1), an actuator shaft (2) rotatably arranged in the mounting housing (1), a yoke (3) symmetrically arranged on the outer surface of the actuator shaft (2), and an electric drive member (6), characterized in that: The inside of the mounting cover (1) is transversely sleeved with a pushing shaft (4), one end of the pushing shaft (4) is fixedly provided with a pushing plate (5), the outer surface of the pushing shaft (4) is distributed with a protruding mechanism (7) upward and downward, one end of the pushing shaft (4) is provided with a telescopic adjusting mechanism (9), the electric drive element (6) controls the transverse movement of the pushing shaft (4) through the pushing plate (5), and the pushing shaft (4) controls the deflection of the shift fork (3) through the protruding mechanism (7), the top of the execution shaft (2) is fixedly connected with a manual wheel (8), the telescopic adjusting mechanism (9) is used for withdrawing the protruding mechanism (7) from the shift fork (3), and the execution shaft (2) is directly manipulated to rotate through the manual wheel (8), and after the deflection of the shift fork (3), the position of the shift fork (3) is clamped and fixed through the reset protruding mechanism (7).

2. A valve actuator according to claim 1, wherein: The execution shaft (2) is installed in the mounting cover (1) through an outer bearing, the electric drive element (6) comprises a mounting cylinder (61), a threaded shaft (62), a sliding sleeve plate (63), a connecting rod (64) and a drive motor (65), the mounting cylinder (61) is fixed on the outer side of the mounting cover (1), the threaded shaft (62) is rotatably sleeved at the end of the mounting cylinder (61), the sliding sleeve plate (63) is threadedly sleeved on the outer side of the threaded shaft (62), the connecting rod (64) is fixedly connected between the sliding sleeve plate (63) and the pushing plate (5), the output shaft of the drive motor (65) is fixedly connected with the threaded shaft (62), and the pushing plate (5) is movably sleeved in the mounting cylinder (61).

3. A valve actuator according to claim 2 wherein: The upper and lower surfaces of the sliding sleeve plate (63) are provided with clamping plates, the inner wall of the mounting cylinder (61) is provided with clamping grooves, and the clamping plates and the clamping grooves are slidably sleeved.

4. A valve actuator according to claim 3 wherein: The protruding mechanism (7) comprises an adapting cavity (71), a protruding clamping block (72) and a spring (73), the adapting cavity (71) is formed in the outer surface of the pushing shaft (4), one end of the protruding clamping block (72) is movably sleeved in the adapting cavity (71), and one end of the spring (73) is fixed in the adapting cavity (71), and the other end of the spring (73) is fixedly connected with the protruding clamping block (72).

5. A valve actuator according to claim 4 wherein: The telescopic adjusting mechanism (9) comprises a compression cavity (91), a through cavity (92), a movable plug (93) and an adjusting rod (94), the compression cavity (91) and the through cavity (92) are both formed in the pushing shaft (4) and communicate with each other, the through cavity (92) also communicates with the adapting cavity (71) of the protruding mechanism (7), the movable plug (93) is movably sleeved in the compression cavity (91), and the adjusting rod (94) is threadedly sleeved at the right end of the pushing shaft (4), and one end of the adjusting rod (94) is fixedly connected with the movable plug (93).

6. The valve actuator of claim 1 wherein: The inner wall of the shift fork (3) is provided with a side slit (10), the inside of the shift fork (3) is provided with a middle cavity (11), the middle cavity (11) is communicated with the side slit (10), the outer side of the mounting cover (1) is provided with a lubricating oil atomization spraying mechanism, the lubricating oil atomization spraying mechanism atomizes the lubricating oil and inputs it into the middle cavity (11), and then sprays it to the inner wall area of the shift fork (3) through the side slit (10), the lubricating oil atomization spraying mechanism comprises a conveying mechanism (12) and a spraying mechanism (13) which are communicated with each other, the conveying mechanism (12) is used for inputting flowing air flow, and the spraying mechanism (13) is used for spraying lubricating oil.

7. A valve actuator according to claim 6 wherein: The conveying mechanism (12) comprises a middle cylinder (121), a gas supply part (122), a guide pipe (123) and a communication pipe (124), the communication pipe (124) is arranged in the middle of the up-and-down distributed shift fork (3) and is communicated with the middle cavity (11), the gas supply part (122) is fixed on the top of the mounting cover (1), the gas outlet end of the gas supply part (122) is communicated with the middle cylinder (121), and the guide pipe (123) is arranged in communication between the middle cylinder (121) and the communication pipe (124).

8. A valve actuator according to claim 7 wherein: The spraying mechanism (13) comprises a storage cylinder (131), a piston head (132) and a piston rod (133), the storage cylinder (131) is screw-mounted on the bottom of the middle cylinder (121), the top of the middle cylinder (121) is provided with a spraying nozzle, the piston head (132) is movably sleeved in the storage cylinder (131), the piston rod (133) is movably sleeved on the bottom of the storage cylinder (131), the upper end of the piston rod (133) is fixedly connected with the piston head (132), and the storage cylinder (131) stores lubricating oil.

9. A method of operating a valve actuator as defined in claim 8, wherein: The operation steps comprise the following steps: First step: start the electric drive (6), control the transverse movement of the push plate (5), drive the transverse movement of the push shaft (4), drive the deflection of the shift fork (3) through the protruding mechanism (7) on the upper and lower parts of the push shaft (4), drive the rotation of the actuator shaft (2), and complete the electric control of the valve core; Second step: when manual operation is needed, rotate the telescopic adjusting mechanism (9) at the outer end of the push shaft (4), control the protruding mechanism (7) to exit from the shift fork (3), release the sleeve setting of the shift fork (3), rotate the manual wheel (8), directly drive the rotation of the actuator shaft (2), and drive the deflection of the shift fork (3) when the actuator shaft (2) drives the rotation of the valve core, reverse operation of the telescopic adjusting mechanism (9) after rotation, so that the protruding mechanism (7) resets and tightly presses and fixes between the upper and lower shift forks (3), and the manual execution is completed by loosening the manual wheel (8); Third step: when the contact area of the shift fork (3) and the protruding mechanism (7) needs to be lubricated, start the conveying mechanism (12) and operate the spraying mechanism (13), so that the oil sprayed by the spraying mechanism (13) is blown and atomized by the conveying mechanism (12) and then conducted into the shift fork (3), and then atomized and sprayed along the inner wall of the shift fork (3), and the contact area lubrication is completed.

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