CN2190724Y - Electric ball valve - Google Patents
Electric ball valve Download PDFInfo
- Publication number
- CN2190724Y CN2190724Y CN 93236182 CN93236182U CN2190724Y CN 2190724 Y CN2190724 Y CN 2190724Y CN 93236182 CN93236182 CN 93236182 CN 93236182 U CN93236182 U CN 93236182U CN 2190724 Y CN2190724 Y CN 2190724Y
- Authority
- CN
- China
- Prior art keywords
- ball valve
- valve
- gear
- valve core
- cam
- Prior art date
- 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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Abstract
The utility model relates to a novel electric ball valve, which is a novel electric ball valve added with dynamic force on the basis of a common manual ball valve. The electric port of the valve technically adopts a composite planetary driving gear system to transfer torque to enable the valve to switch on and off. Program control is carried out to the mechanical part action by a logic circuit composed of a relay, a travel switch and a controlling cam. When the ball valve is switched on, the ball valve is automatically in the state of turning on or off. When a voltage signal for switching on is given to the ball valve, the ball valve starts automatically to rotate clockwise. When the signal for switching on is canceled, the ball valve rotates counterclockwise to the original cut-off state. The electric ball valve can be used in the technical field of automatic control of pipe passages.
Description
Manual ball valve, (playing on-off action in pipeline) purposes is very extensive, domestic existing production at present.This valve operation handle 90 bottom valve doors that turn clockwise are promptly opened, and are rotated counterclockwise 90 bottom valve doors and promptly close.Along with the particularly application of computer technology of modern automatic control engineering, the application that manual ball valve can not be scalable is badly in need of developing electric ball valve on the basis of manual ball valve, promptly gives control signal of ball valve, and valve can open and close at any time.Present domestic this series products that still do not have, existing abroad EA20 electric ball valve.
External EA20 electric ball valve working condition is as follows:
Direct current motor is transferred to spool by the level Four fixed axis gear and transmits a moment and open or close valve, and reduction speed ratio is about 300, and the open and close of valve and the start-stop of motor drive four cams by third level transmission shaft and control with many limit switches.Its distinct disadvantage adopts the fixed shaft gear train transmission will increase the boundary dimension of entire product under the situation of big speed ratio, control section adopts cam to mix control with the switch mechanical electric, device is many, and cam is difficult for the installation and processing debugging, can cause that equally the product design size increases.In addition, the given signal of opening of extraneous signal, ball valve is promptly opened; Given pass signal ball valve promptly closes, so need two groups of control signals, has increased the computer contact.The utility model i.e. newly-designed a kind of electric ball valve in order to overcome above-mentioned shortcoming.
The purpose of this utility model is to realize like this.The setting electric ball valve is that normally close valve (or being normally open valve) does not promptly have external control signal, and ball valve is an off status.
Mechanical part is taken turns by a compound planetary by a direct current motor and moment of torsion is passed to valve core housing valve can be finished open or close valve events; Electric part is promptly to mechanical part action carrying out program control.When ball valve was connected power supply, ball valve motor excitation winding and armature winding were connected, and driven by motor reducing gear and ball valve rotate counterclockwise, and run into left side position limit switch, armature winding outage, valve closing; When electric ball valve by the given start signal of computer, the motor excitation winding is still connected, armature winding commutation is connected, the driven by motor ball valve clockwise rotates, and runs into the right position limit switch and stops operating automatically, the valve opening process is all over; When the given control signal of computer was removed, motor recovered set condition again and rotates counterclockwise valve closing.The clockwise and anticlockwise of motor realizes by armature winding commutation connection power positive cathode.The start-stop of motor is controlled with two position limit switches and relay by fixing on a valve core housing gear cam.Two position limit switches are installed on the poppet shaft bearing, and the axis that makes the arm of position limit switch two control contacts becomes 90 degree angles, valve core housing working gear track scope is in this circular arc of being comprised of 90 degree, and the radial position of cam on the valve core housing gear can reliably contact with the arm of position limit switch control contact and be as the criterion.
Be described further below in conjunction with drawings and Examples:
Figure one is this electric ball valve structure diagram.
In figure one, 1. fixed annulus 2. fixed annuluss 3. motors 4. motor gear 5.6. double-planetary gears 7. small gears 8. valve core housing gears 9. valve core housings 10 are not controlled cams 11 right lateral journey switches 12 bearing supports 13 left lateral journey switches
Figure two is these valve electrical schematic diagrams.
In figure two, M is that motor excitation winding 1.2. is two end points J of armature winding coil relay J
1-1.J
2-2.J
3-3.J
4-4. be its contact J
1.J
2Be respectively movable contact, normally-closed contact and the normally opened contact 3. left lateral journey switch control arms 4. right lateral journey switch control arms of left and right sides position limit switch for relay and corresponding contact C.Nc.No
Make a concrete analysis of as follows:
(1) original state:
When ball valve is connected power supply, exciting winding M is serially connected in the right lateral journey switch normally-closed contact and connects power supply, armature winding is serially connected in the left lateral journey switch normally-closed contact and connects power supply, this moment, the armature winding electric current flowed to 1 end from armature winding 2 ends, motor rotates counterclockwise gives motor gear 4 among the figure one with transmission of power, pass to unfixed internal gear 1,1 by planet wheel 5.6. again and gear 7 coaxial, 7 are engaged to valve core housing gear 8 again drives the ball valves action.Wherein internal gear 3 maintains static.When the cam on the valve core housing gear was run into left lateral journey switch 13, left lateral journey switch normally-closed contact Nc disconnected, the outage of armature winding, and ball valve stops operating and is normally closed set condition.
(2) open normally-closed ball valve
When the given voltage signal of computer is given relay J, its J
3-3.J
4-4Normally-closed contact is thrown off, J
1-1 normally opened contact closes, J
2-2Normally opened contact closes.Because control the cam on the left side this moment, thus the normally opened contact No of the right position limit switch access failure still, so relay J
2Normally-closed contact still is in normally off.Electric current from positive source through J
1-1, J
2Normally closed through armature winding end points 1 through end points 2 through J
2-2And normally opened contact J
1Flow to negative pole and form the loop, it is opposite that its current direction flows to 1 end from armature winding 2 ends during just in time with original state.And the motor excitation winding still is in on-state, so at this moment the above-mentioned reducing gear of driven by motor and ball valve are along clockwise rotating, when turning to the control cam when running into the arm 4 of right lateral journey switch, right lateral journey switch normally-closed contact Nc disconnects, and normally opened contact No connects, relay J
2Connect its normally-closed contact J
2Disconnect, the armature winding outage, ball valve clockwise rotates and stops, and ball valve is opened and is finished.This moment is because J
2The normally opened contact closure, exciting winding is still connected.
(3) ball valve recovers normally closed original state:
When removing computer control signal, relay J dead electricity, its contact J
1-1J
2-2Disconnect J
3-3, J
4-4 connect, and armature winding is connected power supply, this moment electric current from positive source through J
3-3, left lateral journey switch C, Nc comes out to 1 end from armature winding again to armature winding 2 ends, flows through J
4-4Form the loop to power cathode, electric current returns to original state again and flows to 1 end by armature winding 2 ends at this moment, the motor excitation winding still is in on-state, so driven by motor reducing gear and ball valve rotate counterclockwise, when the control cam arrived left lateral journey switch, left lateral journey switch normally-closed contact Nc disconnected, the armature dead electricity, motor stops operating, and ball valve closes and puts in place, and ball valve returns to initial normally off again.
Claims (1)
- A kind of electric ball valve is characterized in that the motor machine drive part adopts one-level moving axis planetary pinion and one-level fixed axis gear composite driving mechanism from the gear on the motor to ball valve core retainer plate gear, two position limit switches are installed on the valve core housing bearing support, make the axis of the arm of two position limit switches control contact be mounted to 90 °, fix a cam on the valve core housing gear, the cam work track is in these 90 ° of circular arc scopes that comprised, and the radial position of cam on the valve core housing gear can reliably contact with the arm of position limit switch control contact and be as the criterion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93236182 CN2190724Y (en) | 1993-01-30 | 1993-01-30 | Electric ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93236182 CN2190724Y (en) | 1993-01-30 | 1993-01-30 | Electric ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2190724Y true CN2190724Y (en) | 1995-03-01 |
Family
ID=33811417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93236182 Expired - Fee Related CN2190724Y (en) | 1993-01-30 | 1993-01-30 | Electric ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2190724Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317521C (en) * | 2003-01-10 | 2007-05-23 | 中国科学院金属研究所 | Composite planetary actuating mechanism |
-
1993
- 1993-01-30 CN CN 93236182 patent/CN2190724Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317521C (en) * | 2003-01-10 | 2007-05-23 | 中国科学院金属研究所 | Composite planetary actuating mechanism |
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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 |