CN201373156Y - Electric actuator and valve position resistance signal generating device thereof - Google Patents
Electric actuator and valve position resistance signal generating device thereof Download PDFInfo
- Publication number
- CN201373156Y CN201373156Y CN200920002189U CN200920002189U CN201373156Y CN 201373156 Y CN201373156 Y CN 201373156Y CN 200920002189 U CN200920002189 U CN 200920002189U CN 200920002189 U CN200920002189 U CN 200920002189U CN 201373156 Y CN201373156 Y CN 201373156Y
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- Prior art keywords
- resistance signal
- generation device
- signal generation
- valve
- electric actuator
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses a valve electric actuator and a valve position resistance signal generating device thereof. The valve position resistance signal generating device comprises a circuit board, a regulation resistance which is fixed on the upper end surface of the circuit board and extends upwards to form an output shaft, a rotating shaft which vertically passes through the circuit board in a rotation way, a chuck which is fixedly connected with the lower end of the rotating shaft and is used for joining a position limiting cam, a driving gear which is sleeved on the upper shaft body of the rotating shaft, an output shaft which is sleeved on the regulation resistance and a driven gear which is engaged with the driving gear, wherein a pre-determined transmission ratio is arranged between the driving gear and the driven gear. The valve position resistance signal generating device can realize the full-angle output (more than 300 degrees) under major conditions.
Description
Technical field
The utility model relates to a kind of valve electric actuator, especially relates to the valve location resistance signal generation device that valve location is carried out the output of equal proportion resistance signal.
Background technique
In general, electric actuator is a kind of valve actuator commonly used in the industrial automation control system.
In the running of electric actuator, need upwards level controlling system equal proportion output valve position signal, so electric actuator is provided with a valve location resistance signal generation device.In order to realize upwards level controlling system equal proportion output valve position signal, valve location resistance signal generation device generally includes one and valve output unit single-turn potentiometer directly in parallel, and this single-turn potentiometer is exported certain resistance signal in corner 300 degree scopes.
The major defect of this valve location resistance signal generation device is, the actual rotation angle of potentiometer will change along with the length of valve stroke, in other words, if the valve traveled distance is shorter, the corner of potentiometer will be less, and for example corner is 100 degree, the signal of the actual output of potentiometer will be than two of 300 degree little three, this true resolution with regard to meaning person's valve location has also reduced 2/3rds, can not effectively satisfy the required precision of control system, even can produce vibration.
The model utility content
In order to solve the aforementioned problems in the prior, main purpose of the present utility model is to provide a kind of valve location resistance signal generation device of electric actuator, by adjusting structure middle gear proportioning, it can be implemented in and carry out full angle output (300 degree) under the most situation.
In order to solve the aforementioned problems in the prior, another purpose of the present utility model is to provide a kind of electric actuator, and it comprises valve location resistance signal generation device of the present utility model.
For realizing above-mentioned purpose of the present utility model, the utility model provides a kind of valve location resistance signal generation device of valve electric actuator, described valve location resistance signal generation device comprises a circuit board, one is fixed on the upper-end surface of described circuit board and extends upward the potentiometer of an output shaft, one vertically runs through the rotating shaft of described circuit board rotationally, at the affixed position limit cam connection chuck of the lower end of described rotating shaft, the sheathed actuation gear of the top of described rotating shaft axis body and be sheathed on described potentiometer output shaft and with the driven gear of described actuation gear engagement, have predetermined velocity ratio between wherein said actuation gear and the described driven gear.
According to technical conceive of the present utility model, the lower end of described rotating shaft is housed in the axle sleeve, and described axle sleeve vertically runs through by a spring sheet and is fixed in described circuit board, and described position limit cam connects the lower end surface of being fixed in described axle sleeve with chuck.
According to technical conceive of the present utility model, be disposed with first check ring, first pad and first spring pressuring plate that is set in the described rotating shaft below the described actuation gear from the top down, be disposed with second check ring and second pad below described actuation gear from bottom to top, the top axis body of described rotating shaft is provided with first annular groove and second annular groove that is used to be provided with described first check ring and described second check ring.
According to technical conceive of the present utility model, also be fixed with an angle indicator panel on the top of described rotating shaft.
According to technical conceive of the present utility model, described valve location resistance signal generation device comprises that also one one end is sheathed on the gear retention tab that the other end of described rotating shaft is sheathed on described output shaft.
According to technical conceive of the present utility model, fixed cover is provided with an output shaft axle sleeve on the output shaft of described potentiometer, the upper end outer circumferential face of described output shaft axle sleeve is formed with outside thread, the lower end of described output shaft axle sleeve is formed with positive stop lug boss, described driven gear is set on the described output shaft axle sleeve and between described positive stop lug boss and described driven gear and is provided with the 3rd spring pressuring plate, also is bolted with a tapped pressure ring on the upper end of described output shaft axle sleeve.
According to technical conceive of the present utility model, described valve location resistance signal generation device comprises that also one is fixed in described circuit board and fixedly uses column from what described circuit board extended downwards.
The utility model also provides a kind of electric actuator, and described electric actuator comprises any above-mentioned valve location resistance signal generation device of power the utility model.
Compared with prior art, the beneficial effects of the utility model are: valve location resistance signal generation device compact structure of the present utility model, and with low cost, be suitable for producing in batches.Easy for installation, adjust easily, be user-friendly to and safeguard.In addition, valve location resistance signal generation device of the present utility model can be realized setting zero point easily, and can realize that different input angles can both reach maximum potentiometer output angle.
Description of drawings
Fig. 1 is the utility model valve location resistance signal generation device embodiment's a decomposing state stereogram.
Fig. 2 is the utility model valve location resistance signal generation device embodiment's an assembled state stereogram.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.To refer to identical or similar parts with identical or similar reference character as far as possible in this manual.
Referring to Fig. 1 and Fig. 2, the valve location resistance signal generation device of valve electric actuator of the present utility model comprises that circuit board 5, potentiometer 18, rotating shaft 7, position limit cam connect with chuck 3, actuation gear 11 and driven gear 23.
Rotating shaft 7 vertically runs through circuit board 5 rotationally.According to preferred version, the lower end of rotating shaft 7 is housed in the axle sleeve 4, and axle sleeve 4 vertically runs through by a spring sheet 6 and is fixed in the circuit board 5, and the position limit cam connects the lower end surface of being fixed in axle sleeve 4 with chuck 3.
The position limit cam connects the lower end that is fixed in rotating shaft 7 with chuck 3.The connection of position limit cam can be made of plastics and be stuck on the position limit cam (figure does not show) of electric actuator with chuck 3, rotation angle and position limit cam that the position limit cam connects with chuck 3 are consistent, and the position of position limit cam and valve is consistent.
According to preferred version, valve location resistance signal generation device of the present utility model comprises that also one one end is sheathed on the gear retention tab 14 that rotating shaft 7 other ends are sheathed on output shaft 182.Gear retention tab 14 can guarantee that the engagement between driven gear 23 and the actuation gear 11 is good.In order to keep gear retention tab 14, can in rotating shaft 7, form the 3rd annular groove 73, and the 3rd check ring 15 is set in the 3rd annular groove 73 moves on the gear retention tab 14 preventing.
According to the technical solution of the utility model, can also be fixed with an angle indicator panel 16 on the top of rotating shaft 7 by screw 26.
For valve location resistance signal generation device of the present utility model is fixed in the electric actuator, below circuit board 5, be fixed with the fixing column 17 of using that extends from circuit board 5 downwards by screw 19.
The utility model also provides a kind of electric actuator, and described electric actuator comprises any valve location resistance signal generation device described in the utility model.
Hereinafter will simply describe basic functional principle of the present utility model.
Valve location resistance signal generation device of the present utility model is fixedly mounted on electric actuator inside by fixing with column 17, the connection of position limit cam is stuck on the position limit cam of electric actuator with chuck 3, rotation angle and position limit cam that the position limit cam connects with chuck 3 are consistent, and the position of position limit cam and valve is consistent.Connect when rotating with chuck 3 at the position limit cam, by the transmission of rotating shaft 7, actuation gear 11, driven gear 23, the output shaft 182 that drives potentiometer 18 rotates, and therefore, the rotation angle of the output shaft 182 of potentiometer 18 has reflected the angle of valve location.
Owing in total travel, make the corner maximum of the output shaft 182 of potentiometer 18, can improve the stable of control accuracy and system.Because the final controlling element applied environment is varied, valve location resistance signal generation device of the present utility model can realize that different input angles can both reach maximum potentiometer output angle by adjusting the velocity ratio between driving gear 11 and the driven gear 23.
In addition, be not rigidly connected between the output shaft 182 of driven gear 11 and potentiometer 18, during proper functioning, because the driving force that potentiometer 18 needs is very little, can be considered between the output shaft 182 of driven gear 11 and potentiometer 18 and be rigidly connected, can guarantee the linearity of signal output.But adjusting potentiometer during zero point, as long as rotate the output shaft 182 of potentiometer 18 with certain power (above the frictional force between the output shaft 182 of driven gear 11 and potentiometer 18), just can change the relative position between the output shaft 182 of driven gear 11 and potentiometer 18, the position of valve does not but change, thereby realizes the purpose that set zero point.
Above-described only is preferable possible embodiments of the present utility model; described embodiment is not in order to limit scope of patent protection of the present utility model; therefore the equivalent structure done of every utilization specification of the present utility model and accompanying drawing content changes, and in like manner all should be included in the protection domain of the present utility model.
Claims (8)
1. the valve location resistance signal generation device of a valve electric actuator, it is characterized in that, described valve location resistance signal generation device comprises a circuit board, one is fixed on the upper-end surface of described circuit board and extends upward the potentiometer of an output shaft, one vertically runs through the rotating shaft of described circuit board rotationally, at the affixed position limit cam connection chuck of the lower end of described rotating shaft, the sheathed actuation gear of the top of described rotating shaft axis body and be sheathed on described potentiometer output shaft and with the driven gear of described actuation gear engagement, have predetermined velocity ratio between wherein said actuation gear and the described driven gear.
2. the valve location resistance signal generation device of valve electric actuator as claimed in claim 1, it is characterized in that, the lower end of described rotating shaft is housed in the axle sleeve, described axle sleeve vertically runs through by a spring sheet and is fixed in described circuit board, and described position limit cam connects the lower end surface of being fixed in described axle sleeve with chuck.
3. the valve location resistance signal generation device of valve electric actuator as claimed in claim 1, it is characterized in that, be disposed with first check ring, first pad and first spring pressuring plate that is set in the described rotating shaft below the described actuation gear from the top down, be disposed with second check ring and second pad below described actuation gear from bottom to top, the top axis body of described rotating shaft is provided with first annular groove and second annular groove that is used to be provided with described first check ring and described second check ring.
4. the valve location resistance signal generation device of valve electric actuator as claimed in claim 1 is characterized in that, also is fixed with an angle indicator panel on the top of described rotating shaft.
5. the valve location resistance signal generation device of valve electric actuator as claimed in claim 1, it is characterized in that described valve location resistance signal generation device comprises that also one one end is sheathed on the gear retention tab that the other end of described rotating shaft is sheathed on described output shaft.
6. the valve location resistance signal generation device of valve electric actuator as claimed in claim 5, it is characterized in that, fixed cover is provided with an output shaft axle sleeve on the output shaft of described potentiometer, the upper end outer circumferential face of described output shaft axle sleeve is formed with outside thread, the lower end of described output shaft axle sleeve is formed with positive stop lug boss, described driven gear is set on the described output shaft axle sleeve and between described positive stop lug boss and described driven gear and is provided with the 3rd spring pressuring plate, also is bolted with a tapped pressure ring on the upper end of described output shaft axle sleeve.
7. the valve location resistance signal generation device of valve electric actuator as claimed in claim 1, it is characterized in that described valve location resistance signal generation device comprises that also one is fixed in described circuit board and fixedly uses column from what described circuit board extended downwards.
8. an electric actuator is characterized in that, described electric actuator comprises described any valve location resistance signal generation device of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920002189U CN201373156Y (en) | 2009-02-02 | 2009-02-02 | Electric actuator and valve position resistance signal generating device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920002189U CN201373156Y (en) | 2009-02-02 | 2009-02-02 | Electric actuator and valve position resistance signal generating device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201373156Y true CN201373156Y (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920002189U Expired - Lifetime CN201373156Y (en) | 2009-02-02 | 2009-02-02 | Electric actuator and valve position resistance signal generating device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201373156Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252130A (en) * | 2011-06-27 | 2011-11-23 | 天津市津达执行器有限公司 | Electric actuator valve position detection device based on dual potentiometers |
| CN104976405A (en) * | 2015-07-10 | 2015-10-14 | 天津特克执行器有限公司 | Potentiometer installation structure of electric actuator |
| CN105006319A (en) * | 2015-07-10 | 2015-10-28 | 吴忠仪表有限责任公司 | Feedback device for electric actuating mechanism |
| CN107119689A (en) * | 2017-06-20 | 2017-09-01 | 成都中大华瑞科技有限公司 | Be in the milk automatic sewage discharging device |
| CN110332357A (en) * | 2019-06-27 | 2019-10-15 | 南京林业大学 | A kind of aperture valve actuator of auto-manual |
-
2009
- 2009-02-02 CN CN200920002189U patent/CN201373156Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252130A (en) * | 2011-06-27 | 2011-11-23 | 天津市津达执行器有限公司 | Electric actuator valve position detection device based on dual potentiometers |
| CN102252130B (en) * | 2011-06-27 | 2012-11-21 | 天津市津达执行器有限公司 | Electric actuator valve position detection device based on dual potentiometers |
| CN104976405A (en) * | 2015-07-10 | 2015-10-14 | 天津特克执行器有限公司 | Potentiometer installation structure of electric actuator |
| CN105006319A (en) * | 2015-07-10 | 2015-10-28 | 吴忠仪表有限责任公司 | Feedback device for electric actuating mechanism |
| CN104976405B (en) * | 2015-07-10 | 2017-08-25 | 天津特克执行器有限公司 | The potentiometer mounting structure of YE |
| CN107119689A (en) * | 2017-06-20 | 2017-09-01 | 成都中大华瑞科技有限公司 | Be in the milk automatic sewage discharging device |
| CN110332357A (en) * | 2019-06-27 | 2019-10-15 | 南京林业大学 | A kind of aperture valve actuator of auto-manual |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091230 |