CN117072742B - Valve actuator - Google Patents
Valve actuator Download PDFInfo
- Publication number
- CN117072742B CN117072742B CN202311317425.0A CN202311317425A CN117072742B CN 117072742 B CN117072742 B CN 117072742B CN 202311317425 A CN202311317425 A CN 202311317425A CN 117072742 B CN117072742 B CN 117072742B
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- China
- Prior art keywords
- driving
- planet
- wheel
- valve actuator
- driving module
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- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a valve actuator, and belongs to the technical field of fluid control. The planetary structure comprises a central wheel, a planet carrier, a planet wheel and a gear ring, wherein the central wheel is in running fit with the box, the planet carrier is in running fit with the box, an output shaft is coaxially arranged on the central wheel, the planet wheel is rotationally connected to the planet carrier, a plurality of planet wheels surround the outer side of the central wheel, meanwhile, the planet wheel is in meshing fit with the central wheel, the gear ring is in running fit with the box, a plurality of planet wheels are in meshing fit with the inner side wall of the gear ring, a transmission piece of the first driving module is connected with the outer side wall of the gear ring, and a transmission piece of the second driving module is connected with the peripheral side wall of the planet carrier. The valve actuator can solve the problems that the valve actuator is long and the valve actuator is easily limited by space due to the fact that the rotation angle of an output shaft is increased by the existing valve actuator.
Description
Technical Field
The invention relates to the technical field of fluid control, in particular to a valve actuator.
Background
A valve actuator is a driving device for providing a rotational movement. The general structure of the existing pneumatic valve actuator is as follows: the rack is connected with the piston, and is meshed with a gear on the output shaft, so that the rack is driven to slide through the movement of the piston, and the meshed gear and the output shaft are driven to rotate through the rack, so that the output shaft is driven to rotate through the control gas trend, and therefore, the rotating angle of the output shaft needs to be increased, the length of the rack needs to be lengthened, but the valve actuator is increased, the valve actuator is easily limited by space, and inconvenience is brought to transportation and installation environments.
Accordingly, there is a need to provide a new valve actuator.
Disclosure of Invention
Based on the above-mentioned problems existing in the prior art, an object of the present invention is to provide a valve actuator, which can solve the problem that the valve actuator is long and is easily limited by space due to the fact that the rotation angle of an output shaft is increased by the existing valve actuator.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a valve executor, includes box, planetary structure, first drive module and second drive module, planetary structure includes central round, planet carrier, planet wheel and ring gear, the central round with box normal running fit, the planet carrier with box normal running fit, coaxial being provided with the output shaft on the central round, the planet wheel has a plurality of, and a plurality of planet wheels set up in the one end that the planet carrier is close to the central round along the circumference distribution of planet carrier, the planet wheel rotates to be connected on the planet carrier to a plurality of planet wheels are around in the outside of central round, simultaneously the planet wheel with the meshing cooperation of central round, the ring gear with box normal running fit, and the ring gear cover locates a plurality of the planet wheel is outside, a plurality of planet wheel with the inside wall meshing cooperation of ring gear, first drive module with the structure of second drive module is the same, first drive module/the second drive module includes the drive cylinder, and connect the driving medium on the drive cylinder output, the driving medium with the outside wall of planet carrier links to each other with the side wall of planet carrier links to each other.
Further, when the driving cylinder of the first driving module drives the driving member to move along a straight line, the driving member can drive the gear ring to rotate, at this time, the driving cylinder of the second driving module stops, so that the planet carrier cannot rotate in a locking state, and thus the rotation of the gear ring drives the planet wheel to rotate through engagement, the rotation of the planet wheel drives the central wheel to rotate, so that the output shaft rotates to realize the output of torque, when the driving member of the first driving module and the gear ring relatively move in place, at this time, the driving member of the first driving module cannot drive the gear ring to rotate along the previous direction, at this time, the driving cylinder of the first driving module is controlled to stop, so that the gear ring cannot rotate in a locking state, and the driving cylinder of the second driving module drives the driving member to move along a straight line, and the rotation of the planet wheel can drive the planet wheel to rotate along the circumference of the planet carrier, and meanwhile, due to the engagement of the planet wheel and the inner side wall of the gear ring, the rotation of the central wheel can be driven through engagement, so that the rotation of the planet wheel can continue to realize the continuous output of torque.
Further, the transmission piece is a rack, the rack of the first driving module is meshed and matched with the outer side wall of the gear ring, and the rack of the second driving module is meshed and matched with a transmission wheel arranged on the peripheral side wall of the planet carrier.
Further, the driving cylinder of the first driving module is intersected with the driving cylinder of the second driving module.
Further, the gear ring and the transmission wheel are staggered along the axial direction of the output shaft, so that the driving cylinder of the first driving module and the driving cylinder of the second driving module are staggered along the axial direction of the output shaft.
Further, a guide rail is arranged on the driving cylinder corresponding to the transmission piece, and the transmission piece is in sliding fit on the guide rail of the driving cylinder.
Further, the center wheel and the planet carrier are arranged in an up-down opposite mode.
Further, the output shaft is exposed out of the box body, and the output end is used for being matched and connected with a load.
Further, an included angle between the driving cylinder of the first driving module and the driving cylinder of the second driving module is 60 degrees.
Further, the central wheel and the planet wheel are straight-tooth cylindrical gears which are matched.
The beneficial effects of the invention are as follows: the invention provides a valve actuator, the valve actuator comprises a box body, a planetary structure, a first driving module and a second driving module, the planetary structure in the box body is driven by the first driving module or the second driving module to act so as to drive a load to do rotary motion, the planetary structure comprises a central wheel, a planetary frame, a planetary wheel and a gear ring, the central wheel is in rotary fit with the box body, the planetary frame is in rotary fit with the box body, the central wheel and the planetary frame are arranged up and down oppositely, an output shaft is coaxially arranged on the central wheel, the output shaft is exposed out of the box body, so that the output end can be connected with the load in a matched manner, the planetary wheel is provided with a plurality of planetary wheels, the planetary wheels are arranged at one end, close to the central wheel, of the planetary frame in a circumferential direction of the planetary frame, and are connected to the planetary frame in a rotary manner, the planetary wheels surround the outer side of the central wheel, meanwhile, the planetary wheels are in meshed fit with the central wheel, a gear ring is in rotary fit with the box body, the gear ring is sleeved outside the plurality of the planetary wheels, the planetary wheels are in meshed fit with the inner side walls of the gear ring, the first driving module and the second driving module are in the same structure, the first driving module/the second driving module comprises a driving cylinder, an output cylinder and a driving piece is connected with the planetary wheel, and a rotary cylinder can be in a rotary state, and can be in a linear state, the rotary driving piece can be driven by the planetary wheel is in a rotary driving piece, and can be in a rotary state, and can be in a rotary cylinder is in a rotary state, and in a rotary cylinder is in a rotary cylinder, when the transmission part of the first driving module and the gear ring relatively move in place, the transmission part of the first driving module can not drive the gear ring to rotate along the previous direction, and the transmission part of the first driving module is controlled to stop at the moment, so that the gear ring can not rotate in a locking state, and the transmission part is driven by the driving cylinder of the second driving module to move along a straight line, so that the planet carrier can be driven to rotate, the planet carrier can be driven to rotate along the circumferential direction of the planet carrier, and simultaneously, the planet wheel is driven to rotate due to the meshing of the planet wheel and the inner side wall of the gear ring, and then the planet wheel rotates by meshing with the driving center wheel, so that the output shaft is continuously rotated to realize continuous output of torque.
Drawings
The invention is further described below with reference to the drawings and examples.
In the figure: fig. 1 is a schematic perspective view of a valve actuator according to an embodiment of the present invention.
Fig. 2 is a partially exploded view of a valve actuator according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a positional relationship between a planetary structure and a first driving module and a second driving module according to an embodiment of the present invention.
Fig. 4 is an exploded view of the structure shown in fig. 3.
Fig. 5 is a top view of fig. 4.
Fig. 6 is a schematic perspective view of a first driving module/second driving module according to an embodiment of the present invention.
Wherein, each reference sign in the figure: 1. a case; 2. a planetary structure; 21. a center wheel; 211. an output shaft; 22. a planet carrier; 23. a planet wheel; 24. a gear ring; 25. a driving wheel; 3. a first driving module; 4. a second driving module; 5. a driving cylinder; 6. a transmission member; 7. and a guide rail.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment," "in some embodiments," or "in some embodiments" in various places throughout this specification are not all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Referring to fig. 1 to 6, a valve actuator provided by the present invention will be described, the valve actuator includes a case 1, a planetary structure 2, a first driving module 3 and a second driving module 4, the planetary structure 2 in the case 1 is driven by the first driving module 3 or the second driving module 4 to perform a rotation motion to drive a load, as shown in fig. 4, the planetary structure 2 includes a central wheel 21, a planet carrier 22, a planet wheel 23 and a gear ring 24, the central wheel 21 is in rotation fit with the case 1, the planet carrier 22 is in rotation fit with the case 1, and the central wheel 21 and the planet carrier 22 are disposed vertically opposite, an output shaft 211 is coaxially disposed on the central wheel 21, the output shaft 211 is exposed out of the case 1, so that the output shaft 211 can be connected with the load in a matching manner to drive the load, the planet wheel 23 has a plurality of, the planet gears 23 are distributed at one end of the planet carrier 22 close to the central wheel 21 along the circumferential direction of the planet carrier 22, the planet gears 23 are rotatably connected to the planet carrier 22, the planet gears 23 surround the outer side of the central wheel 21, meanwhile, the planet gears 23 are meshed with the central wheel 21, the gear ring 24 is meshed with the box body 1, the gear ring 24 is sleeved outside the planet gears 23, the planet gears 23 are meshed with the inner side walls of the gear ring 24, the first driving module 3 and the second driving module 4 are structurally the same, the first driving module 3/the second driving module 4 comprises a driving cylinder 5 and a transmission piece 6 connected to the output end of the driving cylinder 5, the transmission piece 6 of the first driving module 3 is connected with the outer side wall of the gear ring 24, the transmission piece 6 of the second driving module 4 is connected with the circumferential side wall of the planet carrier 22, so that when the driving cylinder 5 of the first driving module 3 drives the transmission piece 6 to move along a straight line, the transmission member 6 drives the gear ring 24 to rotate, at this time, the driving cylinder 5 of the second driving module 4 stops, so that the planet carrier 22 is in a locked state and cannot rotate, and thus, the rotation of the gear ring 24 drives the planet wheel 23 to rotate through engagement, the rotation of the planet wheel 23 drives the central wheel 21 to rotate through engagement, so that the output shaft 211 rotates to realize the output of torque, when the transmission member 6 of the first driving module 3 and the gear ring 24 relatively move in place, at this time, the transmission member 6 of the first driving module 3 cannot drive the gear ring 24 to rotate in the previous direction, at this time, the transmission member 6 of the first driving module 3 is controlled to stop, so that the gear ring 24 cannot rotate in a locked state, the driving cylinder 5 of the second driving module 4 drives the transmission member 6 to move in a straight line, and then the planet carrier 22 rotates, and meanwhile, the rotation of the planet carrier 22 drives the planet wheel 23 to rotate along the circumferential direction of the planet carrier 22, and the inner side wall of the gear ring 24 is engaged, so that the planet wheel 23 rotates through engagement with the central wheel 21, and the rotation of the output shaft 211 continues to realize the continuous output of torque. Therefore, when the valve actuator provided by the embodiment of the invention runs through the first driving module 3, the driving cylinder 5 of the second driving module 4 is stopped, or when the second driving module 4 runs, the first driving module 3 is stopped, and the output shaft 211 can be continuously driven to rotate.
In some embodiments, the transmission member 6 is a rack, the rack of the first driving module 3 is engaged with the outer side wall of the gear ring 24, and the rack of the second driving module 4 is engaged with a driving wheel 25 arranged on the peripheral side wall of the planet carrier 22, so that the transmission member 6 and the gear ring 24, and the transmission member 6 and the planet carrier 22 realize a connection relationship of linear motion driving rotation motion through a rack-and-pinion structure. It will be appreciated that in other embodiments not shown, the transmission member 6 and the ring gear 24, and the transmission member 6 and the planet carrier 22 may also be connected by a friction damping arrangement.
As shown in fig. 5, in some embodiments, the driving cylinder 5 of the first driving module 3 and the driving cylinder 5 of the second driving module 4 are intersected, so that the length of the valve actuator can be reduced. In the present embodiment, the included angle between the driving cylinder 5 of the first driving module 3 and the driving cylinder 5 of the second driving module 4 may be, but is not limited to, 60 degrees.
In some of these embodiments, the central wheel 21 and the planet wheel 23 are co-operating spur gears, it being understood that in other embodiments the central wheel 21 and the planet wheel 23 may also be co-operating helical gears or other gears enabling a parallel axis transmission.
As shown in fig. 6, in some embodiments, the driving cylinder 5 is provided with a guide rail 7 corresponding to the transmission member 6, and the transmission member 6 is slidably matched with the guide rail 7 of the driving cylinder 5, so that the integration of the first driving module 3 and the second driving module 4 is strong, and the assembly of the first driving module 3 and the second driving module 4 is convenient. It will be appreciated that in other embodiments not shown, the guide rail 7 may also be provided on the housing 1 to ensure the stability of the movement of the transmission member 6.
In some embodiments, the load is an on-off member inside the valve body, and the valve actuator drives the valve to play a role in regulating the flow of medium in the pipeline.
In some of these embodiments, the planet wheels 23 in the planetary arrangement 2 have three.
In some of these embodiments, the gear ring 24 and the transmission wheel 25 are offset in the axial direction of the output shaft 211, so that the driving cylinders 5 of the first driving module 3 and the driving cylinders 5 of the second driving module 4 are also offset in the axial direction of the output shaft 211 due to the proximity of the gear ring 24 and the transmission wheel 25, respectively. Thus, the driving cylinder 5 of the first driving module 3 and the driving cylinder 5 of the second driving module 4 do not interfere with each other in the telescopic motion of the output shaft, and the maximum stroke is favorably exerted.
In some embodiments, to stop the driving cylinder, the motion of the driving cylinder may be stopped by an electromagnetic valve for controlling the air flow at a position where the driving cylinder needs to be stopped.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. A valve actuator, characterized in that: including box, planetary structure, first drive module and second drive module, planetary structure includes central round, planet carrier, planet wheel and ring gear, the central round with box normal running fit, the planet carrier with box normal running fit, coaxial output shaft that is provided with on the central round, the planet wheel has a plurality of, and a plurality of planet wheels are distributed to set up in the planet carrier along the circumference of planet carrier and are close to the one end of central round, the planet wheel swivelling joint is on the planet carrier to a plurality of planet wheels are around the outside of central round, simultaneously the planet wheel with the meshing cooperation of central round, the ring gear with box normal running fit, and the ring gear cover is located a plurality of the planet wheel is with the inside wall meshing cooperation of ring gear, first drive module with the structure of second drive module is the same, first drive module/the second drive module includes the actuating cylinder, and is connected the driving piece on the actuating cylinder output, the driving piece of first drive module with the outside wall links to each other of planet carrier, the driving piece is the second side wall is the meshing cooperation of the ring gear with the side wall of the planet carrier, the driving piece is the side wall of the second side wall is meshed with the second side wall of the driving piece.
2. The valve actuator of claim 1, wherein: when the driving cylinder of the first driving module drives the transmission part to move along a straight line, the transmission part can drive the gear ring to rotate, at the moment, the driving cylinder of the second driving module stops, so that the planet carrier cannot rotate in a locking state, the rotation of the gear ring drives the planet wheel to rotate through meshing, the rotation of the planet wheel drives the central wheel to rotate through meshing, so that the output shaft rotates to realize the output of torque, when the transmission part of the first driving module and the gear ring relatively move in place, at the moment, the transmission part of the first driving module cannot drive the gear ring to rotate along the previous direction, at the moment, the driving cylinder of the first driving module is controlled to stop, so that the gear ring cannot rotate in a locking state, the driving cylinder of the second driving module drives the transmission part to move along a straight line, the planet carrier can rotate, and meanwhile, the planet wheel is driven to rotate along the circumferential direction of the planet carrier, and the rotation of the planet wheel is driven to rotate through meshing with the inner side wall of the gear ring, and the rotation of the planet wheel is driven to rotate continuously through meshing to realize the continuous output of torque.
3. The valve actuator of claim 1, wherein: the driving cylinder of the first driving module is intersected with the driving cylinder of the second driving module.
4. The valve actuator of claim 1, wherein: the gear ring and the transmission wheel are staggered along the axial direction of the output shaft, so that the driving cylinder of the first driving module and the driving cylinder of the second driving module are staggered along the axial direction of the output shaft.
5. The valve actuator of claim 1, wherein: the driving cylinder is provided with a guide rail corresponding to the transmission piece, and the transmission piece is in sliding fit with the guide rail of the driving cylinder.
6. The valve actuator of claim 1, wherein: the center wheel and the planet carrier are arranged in an up-down opposite mode.
7. The valve actuator of claim 1, wherein: the output shaft exposes out of the box body, and the output end is used for being matched and connected with a load.
8. A valve actuator as defined in claim 3, wherein: the included angle between the driving cylinder of the first driving module and the driving cylinder of the second driving module is 60 degrees.
9. The valve actuator of claim 1, wherein: the central wheel and the planet wheel are straight-tooth cylindrical gears which are matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311317425.0A CN117072742B (en) | 2023-10-12 | 2023-10-12 | Valve actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311317425.0A CN117072742B (en) | 2023-10-12 | 2023-10-12 | Valve actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117072742A CN117072742A (en) | 2023-11-17 |
| CN117072742B true CN117072742B (en) | 2024-01-19 |
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ID=88717314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311317425.0A Active CN117072742B (en) | 2023-10-12 | 2023-10-12 | Valve actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117072742B (en) |
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| CN117072742A (en) | 2023-11-17 |
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