CN2401758Y - Electric excutor - Google Patents
Electric excutor Download PDFInfo
- Publication number
- CN2401758Y CN2401758Y CN 99250645 CN99250645U CN2401758Y CN 2401758 Y CN2401758 Y CN 2401758Y CN 99250645 CN99250645 CN 99250645 CN 99250645 U CN99250645 U CN 99250645U CN 2401758 Y CN2401758 Y CN 2401758Y
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- CN
- China
- Prior art keywords
- cam
- motor
- control circuit
- receiving tube
- tube
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model relates to an electric executor, which relates to an executor design for controlling the opening and the closing of valves. The electric executor is composed of a motor, a speed reducer, an electrical signal feedback element, and a control circuit. The electric executor adopts a cam and a moving element contacted to the cam; a signal reception tube is arranged on the moving element; a signal launch tube is fixedly installed and is connected with the control circuit; the motor drives a valve rod to rotate, and simultaneously drives the moving element of the cam to rotate. Thus, distance between the signal reception tube and the launch tube does continuous change, and then continuous changed position feed back signals can be output from the reception tube. The feedback signals are transported to the control circuit. Thus, the utility model realizes automatic control, which can be used for the automatic control of the valves.
Description
The utility model belongs to the design and fabrication technology field of valve being carried out the final controlling element of switch control.
At present, electric actuator commonly used adopts than complex mechanical construction, and has used a large amount of electronic devices, and the transformer of traditional control circuit light belt iron core has just been used seven, so maintenance difficulty is big, has seriously influenced promoting the use of of it.National Bureau of Oceanography, Tianjin desalination of sea water research institute, the sea has jumped water treatment High Seience Technology Co., Ltd. Joint Production a series of electric ball valves of a kind of HY, development and design goes out a kind of electric actuator, adopt comparatively complicated photoswitch circuit, produce 90 ° of angle position feedback commands, can only finish easy two formulas (promptly opening or closing) adjusting task and can not be parked on the arbitrary position by regulating command, also promptly can not finish the required continuous precision of closed loop control and regulate task, cost is higher, maintenance difficulty is bigger, poor anti jamming capability.
It is accurate that the purpose of this utility model provides a kind of position feed back signal, can control various valve body open and closes or be parked in electric actuator on the arbitrary position.
The purpose of this utility model is achieved in that it is made of motor, retarder, electrical signal feedback element and control circuit.In conjunction with different valve body requirements of one's work, adopt three kinds of structural types.
First kind of structure is that the output shaft after cam in the electrical signal feedback element and motor slow down is tightly linked, cam is provided with two contacts that differ 180 ° of angles, with cam two sensitive switches of colliding with two contacts are being housed on a plane on the supporting plate, the sensitive switch position differs 90 °, and sensitive switch is connected with control circuit.
Second kind of structure is that the output shaft after cam in the electrical signal feedback element and motor slow down is tightly linked, cam radius is 90 ° of variations, movable part with Returnning spring and fulcrum is housed on the supporting plate, dress signal receiving tube and push rod on the movable part, push rod leans on mutually with cam, also be fixed with the signal emission tube on the supporting plate, the signal receiving tube is relative with emission tube, and the signal receiving tube is connected with control circuit.
The third structure is that the cam in the electrical signal feedback element is sleeved on the motor output shaft, is and is slidingly matched, cam with slow down after gearwheel be fixed as one, cam radius is 360 ° of variations, all the other are all consistent with second kind of structure.
Second kind of structure and the third structure can adopt movable sheath, fixed cover are housed on the supporting plate, movable sheath and fixed cover suit, built-in spring, signal receiving tube and push rod are housed on the movable sheath, push rod leans on mutually with cam, and the signal emission tube is housed in the fixed cover, and the signal receiving tube is relative with emission tube, the position is interchangeable, and the signal receiving tube is connected with control circuit.
During assembling, the final controlling element motor output shaft and the controlled valve rod of three kinds of structures are tightly linked, and drive them and rotate.
The utility model has the advantages that and satisfy the different user needs, first kind and second kind of structure all are fit to and rotate 90 ° of supporting uses of various ball valves, butterfly valve that just can open or close, first kind only is fit to user's use that the needs simple switch is regulated, second kind then is that the user who is fit to the needs closed-loop regulating system uses, be that it not only can be parked between 0～90 ° on any rotation angle position by regulating command, (4～20mA or 1～5V) is linearity or the five equilibrium ratio characteristic changes but also can allow the changes in flow rate of controlled ball valve, butterfly valve and regulated signal.The third is the valve that is fit to rotate with needs multi-turn ability standard-sized sheet full cut-off, and traditional straight journey single seat or the supporting use of regulating valve of two-seater, can make controlled valve be parked on the arbitrary position, can allow the changes in flow rate of controlled gate valve and regulated signal be linearity or equal percentage characteristics variation.Simple in structure, use components and parts few, antijamming capability is strong, and fault is few, and maintenance is easy, and cost is low.
Following structure drawings and Examples are elaborated to the utility model.
Fig. 1 is first kind of electrical signal feedback element of the utility model locations of structures schematic representation.
Fig. 2 is second kind of electrical signal feedback element of the utility model locations of structures schematic representation.
Fig. 3, Fig. 4 are the third electrical signal feedback element locations of structures schematic representation of the utility model.
Fig. 5 is the third overall structure schematic representation of the utility model.
Embodiment 1
This electric actuator is made of motor, retarder, electrical signal feedback element and control circuit.Output shaft after its electrical signal feedback element cam and motor slow down is tightly linked, cam 1 is provided with two contacts of A, B that differ 180 ° of angles, with cam two sensitive switches 2,3 of colliding with two contacts are being housed on a plane on the supporting plate, the sensitive switch position differs 90 °, and sensitive switch is connected with control circuit.Motor output shaft is tightly linked with controlled valve rod during assembling, and when using reversible electric machine work, under the control circuit effect, motor output shaft clockwise rotates, and drives cam as A point shake-up K
2The time, K
2Become off state by original closed state, promptly send a motor stall instruction, the controlled circuit function stall of motor, this moment, valve was standard-sized sheet (or full cut-off).After the controlled inhour of motor is rotated, have only cam A point to touch K
1The time, K
1Become off state by closing the branch state originally, also sent a motor stall instruction, the controlled once more stall of motor.This moment, valve was finished 90 ° of corners switching conversions.
Use irreversible motor:, and require to drive motor output shaft that cam and valve rotate and rotate 90 ° and just send a motor stall instruction because motor can only rotate to a direction.Just need to have on the cam position to differ two contacts of A, B of 180 °.If output shaft clockwise rotates, when the A point touches K
2The time, send a motor stall instruction, the motor stall makes valve standard-sized sheet (or full cut-off).Motor is controlled clockwise rotate 90 ° once more after, have only the B point of cam to touch K
1, motor is subjected to K
1The stall instruction of sending and stall, at this moment valve is also finished 90 ° and is opened and closed conversion.
Embodiment 2
This motor final controlling element is made of motor, retarder, electrical signal feedback element and control circuit, output shaft after cam 4 in its electrical signal feedback element slows down with motor is tightly linked, cam radius is 90 ° of angles and changes, and change in radius is decided with linear output characteristic or equal percentage output characteristics.Movable part 7 with Returnning spring 5 and fulcrum 6 is housed on the supporting plate, infrared receiving tube 8 and push rod 9 are housed on the movable part, push rod 9 leans on mutually with cam 4, also be fixed with infrared transmitting tube 10 on the supporting plate, infrared receiving tube is relative with emission tube, also interchangeable position, infrared receiving tube is connected with control circuit.Motor output shaft is tightly linked with controlled valve rod during assembling.When motor reducer drives the rotation of controlled valve rod, the cam 4 that also drives top loading rotates, cam promotes movable part and rotates (approximate parallel moving), the also servo-actuated of the infrared receiving tube of top loading, make infrared receiving tube and emission tube distance recur variation, infrared transmitting tube sends the infrared light that wavelength approximates 800nm, so just can export the continually varying position feed back signal from infrared receiving tube, feed back signal to control circuit, thereby realize control automatically.
Embodiment 3
This motor final controlling element is made of motor, retarder, electrical signal feedback element and control circuit, cam 11 in its electrical signal feedback element is sleeved on the motor output shaft 15, be and be slidingly matched, gearwheel 16 after cam and the deceleration fixes one, gearwheel 16 is slidingly matched with motor output shaft, all the other gears cooperate with axle key, and cam 11 also can not be sleeved on the motor output shaft, directly with slow down after gear or gear shaft be fixed as one.Cam 11 radiuses are 360 ° of variations, and all the other are all consistent with second kind of structure.The retarder reduction speed ratio is to rotate the number of turns from standard-sized sheet to full cut-off valve rod needs according to controlled valve to decide, and changes six circle ability standard-sized sheet full cut-offs as need, and then reduction speed ratio is 6: 1, and the driven by motor valve rod changes six circles, and cam turns around, by that analogy.
Can adopt among embodiment 2, the embodiment 3 movable sheath 12, fixed cover 13 are housed on the supporting plate 17, movable sheath and fixed cover suit, built-in spring 14, infrared receiving tube 8 and push rod 9 are housed on the movable sheath, push rod 9 leans on mutually with cam, and infrared transmitting tube 10 is housed in the fixed cover, and infrared receiving tube is relative with emission tube, the position is interchangeable, and infrared receiving tube is connected with control circuit.
Among embodiment 1, embodiment 2, the embodiment 3 by motor, retarder, electrical signal feedback element and control circuit are all cased.
Claims (6)
1, electric actuator is made of motor, retarder, electrical signal feedback element and control circuit, it is characterized in that the output shaft after electrical signal feedback element cam and motor slow down is tightly linked, cam [1] is provided with two contacts of A, B that differ 180 ° of angles, with cam two sensitive switches [2], [3] of colliding with two contacts are being housed on a plane on the supporting plate, the sensitive switch position differs 90 °, and sensitive switch is connected with control circuit.
2, electric actuator is made of motor, retarder, electrical signal feedback element and control circuit, it is characterized in that the output shaft after cam [4] and motor in the electrical signal feedback element slows down is tightly linked, cam radius is 90 ° of angles and changes, movable part [7] with Returnning spring [5] and fulcrum [6] is housed on the supporting plate, signal receiving tube [8] and push rod [9] are housed on the movable part, push rod [9] leans on mutually with cam [4], also be fixed with signal emission tube [10] on the supporting plate, the signal receiving tube is relative with emission tube, also interchangeable position, the signal receiving tube is connected with control circuit.
3, electric actuator is by motor, retarder, electrical signal feedback element and control circuit constitute, it is characterized in that the cam [11] in the electrical signal feedback element is sleeved on the motor output shaft [15], be and be slidingly matched, gearwheel [16] after cam and the deceleration fixes one, gearwheel [16] is slidingly matched with motor output shaft, all the other gears cooperate with axle key, cam [11] radius is 360 ° of variations, movable part [7] with Returnning spring [5] and fulcrum [6] is housed on the supporting plate, signal receiving tube [8] and push rod [9] are housed on the movable part, push rod [9] leans on mutually with cam [11], also be fixed with signal emission tube [10] on the supporting plate, the signal receiving tube is relative with emission tube, also interchangeable position, and the signal receiving tube is connected with control circuit.
4, according to claim 2 or 3 described electric actuator, it is characterized in that being equipped with on the supporting plate [17] movable sheath [12], fixed cover [13], movable sheath and fixed cover suit, built-in spring [14], signal receiving tube [8] and push rod [9] are housed on the movable sheath, push rod [9] leans on mutually with cam, and signal emission tube [10] is housed in the fixed cover, and the signal receiving tube is relative with emission tube, the position is interchangeable, and the signal receiving tube is connected with control circuit.
5, according to claim 2 or 3 described electric actuator, it is characterized in that cam radius changes to decide with linear output characteristic or equal percentage output characteristic, signal receiving tube and emission tube can be infrared receiving tube and emission tube.
6, electric actuator according to claim 3 is characterized in that reduction speed ratio is to rotate the number of turns from standard-sized sheet to full cut-off valve rod needs according to controlled valve rod door to decide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250645 CN2401758Y (en) | 1999-12-10 | 1999-12-10 | Electric excutor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250645 CN2401758Y (en) | 1999-12-10 | 1999-12-10 | Electric excutor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2401758Y true CN2401758Y (en) | 2000-10-18 |
Family
ID=34035341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99250645 Expired - Fee Related CN2401758Y (en) | 1999-12-10 | 1999-12-10 | Electric excutor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2401758Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929814A (en) * | 2010-09-19 | 2010-12-29 | 刘至国 | Heat pipe |
| CN102163507A (en) * | 2010-12-17 | 2011-08-24 | 王光树 | Method for remotely controling switch and remote control starter |
| CN103711606A (en) * | 2013-12-17 | 2014-04-09 | 中国北方发动机研究所(天津) | Rotating angle actuator |
-
1999
- 1999-12-10 CN CN 99250645 patent/CN2401758Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929814A (en) * | 2010-09-19 | 2010-12-29 | 刘至国 | Heat pipe |
| CN102163507A (en) * | 2010-12-17 | 2011-08-24 | 王光树 | Method for remotely controling switch and remote control starter |
| CN103711606A (en) * | 2013-12-17 | 2014-04-09 | 中国北方发动机研究所(天津) | Rotating angle actuator |
| CN103711606B (en) * | 2013-12-17 | 2015-12-09 | 中国北方发动机研究所(天津) | A kind of corner final controlling element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |