CN2388447Y - Motor-operated valve of limit switch with switch limiting position - Google Patents
Motor-operated valve of limit switch with switch limiting position Download PDFInfo
- Publication number
- CN2388447Y CN2388447Y CN 99216215 CN99216215U CN2388447Y CN 2388447 Y CN2388447 Y CN 2388447Y CN 99216215 CN99216215 CN 99216215 CN 99216215 U CN99216215 U CN 99216215U CN 2388447 Y CN2388447 Y CN 2388447Y
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- CN
- China
- Prior art keywords
- switch
- valve
- motor
- limit switch
- operated valve
- 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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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model relates to an electric valve, particularly an electric valve which is suitable for a limiting switch which is provided with a switch threshold position. The utility model is composed of a motor, a transmission mechanism, a valve body, a valve core, etc., and is characterized in that an upper limiting switch is arranged in an upper limiting position of the valve core. Another a lower limiting switch is arranged in the lower limiting position of the valve core, and thus, a limiting switch is added in the position of a valve is added in the electric valve. When the valve rotates between threshold positions and reaches a threshold position, the limiting switch is driven to work. A power supply of the motor is cut off, and the motor stops working. The utility model has the advantage of accurate control in the position of the valve.
Description
The utility model has related to a kind of mortor operated valve, and the spy is applicable to the mortor operated valve with switch pole extreme position limit switch.
The mortor operated valve of prior art mostly is time-based control, i.e. the on off state of operating time control valve by the control motor.Rated rotational frequency according to motor, calculate valve opening or close the needed time, the time parameter of control valve switch in the setting control system then, determine the operating time of motor during the control system worktable by this parameter, be that the operating console system is a kind of open loop state of a control, control system is opened the accurate position of not knowing valve.If the voltage of control system changes, cause the variation of motor speed, perhaps rotating speed increases the time shortening of switch valve, and then the motor rotation blockage time increases, and is unfavorable to motor; Perhaps rotating speed reduces, and the needed time of switch valve increases, when situation is serious even the bad phenomenon of switch can occur.In addition, if can't normally open or close because of external cause causes mortor operated valve, control system can't know that also system can't proper functioning.
A kind of mortor operated valve with switch pole extreme position limit switch is provided on the purpose of this utility model, changes between limit position when valve, when arriving a certain limit position, drive limit switch work, cut off motor power, motor quits work.Limit switch sends signal to control system simultaneously, to the accurate position of control system report mortor operated valve, can change original open loop control into closed loop control system.
The purpose of this utility model is achieved by the following technical solution: the utility model is made up of motor, driving mechanism, valve body and spool etc., it is characterized in that motor drives follower by driving gear, connect an active screw rod in the follower, the active screw rod drives driven nut and moves up and down; Position limit switch is housed on the spool.
The utility model can also be with driven nut sleeve on the active screw rod, and driven nut is Z-shaped, and its left side is equipped with the one stroke switch, and the right side is equipped with another position limit switch.
The utility model compared with prior art has advantages such as valve location precise control.
Description of drawings of the present utility model is as follows:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is concrete structure figure of the present utility model.
Below in conjunction with description of drawings the utility model is described in further detail: as shown in Figure 1, the utility model is made up of motor, driving mechanism, valve body and spool etc., the upper limit position of spool is equipped with a shifting block as prior art, and this shifting block rotates with spool, stirs upper limit position switch.In the lower position of spool another shifting block as prior art is housed, this shifting block rotates with spool, stirs lower position switch.Send electricity by control system to motor when valve is in the closed position, motor rotates, and drives spool by transmission device again and moves upward, and when spool arrives the limes superiors position, promotes upper limit position switch, cuts off motor power, the motor stop table, and opening process finishes.When throttle down, it is opposite with opening process, and motor opposite direction when opening is rotated, and by transmission device, drives spool and moves downward, and up to the lower position switch worktable, motor is stopped operating, and closes closed procedure and finishes.
As shown in Figure 2, motor 1 drives follower 7 by driving gear 2, connects an active screw rod 5 in the follower 7, and active screw rod 5 drives driven nut 4 and moves up and down, and on the top of spool position limit switch 6 is housed.Driven nut 4 is enclosed within initiatively on the screw rod 5, and driven nut 4 is Z-shaped, and its left side is equipped with the one stroke switch, and the right side is equipped with another position limit switch.Position shown in the heavy line is the valve closing position among the figure, at this moment the position limit switch in left side is pushed down in sulculus upper end, driven nut left side, tell control partly, valve is in and closes the position, add forward voltage for motor 1, the motor shaft driven gear is turned clockwise at (to the Motor Shaft end), drive follower 7 and be rotated counterclockwise, driven nut 4 is moved upward with active screw rod 5.When driven nut 4 arrives when opening limit position (among the figure shown in the fine line), the position limit switch on right side is pushed down in sulculus lower end, driven nut 4 right side, tells control partly, and valve is in and closes the position.When giving motor 1 backward voltage, make motor shaft drive driving gear 2 and be rotated counterclockwise (to the Motor Shaft end), drive follower 7 and active screw rod 5 turn clockwise driven nut 4 are moved downward, when driven nut 4 arrives the pass limit position, the position limit switch in left side is pushed down in sulculus upper end, driven nut 4 left side, tell control partly, valve is in open position.Increase the valve location limit switch like this in common mortor operated valve, when valve rotates, when reaching the limit of the position, drive limit switch work between limit position, cut off motor power, motor 1 quits work.Limit switch sends signal to control system simultaneously, to the accurate position of control system report mortor operated valve, can change original open loop control into closed loop control system.
Claims (2)
1, a kind of mortor operated valve with switch pole extreme position limit switch, form by motor, driving mechanism, valve body and spool etc., it is characterized in that motor drives follower by driving wheel, connect an active screw rod in the follower, the active screw rod drives driven nut and moves up and down; Spool is equipped with position limit switch.
2, the mortor operated valve with switch pole extreme position limit switch according to claim 1 is characterized in that driven nut sleeve on the active screw rod, and driven nut is Z-shaped, and its left side is equipped with the one stroke switch, and the right side is equipped with another position limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99216215 CN2388447Y (en) | 1999-07-02 | 1999-07-02 | Motor-operated valve of limit switch with switch limiting position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99216215 CN2388447Y (en) | 1999-07-02 | 1999-07-02 | Motor-operated valve of limit switch with switch limiting position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2388447Y true CN2388447Y (en) | 2000-07-19 |
Family
ID=34007927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99216215 Expired - Fee Related CN2388447Y (en) | 1999-07-02 | 1999-07-02 | Motor-operated valve of limit switch with switch limiting position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2388447Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047474A (en) * | 2012-12-07 | 2013-04-17 | 张跃 | Installation structure of high-temperature-resistance valve travel switch |
| CN103133749A (en) * | 2013-02-21 | 2013-06-05 | 常熟市维特隆自动化仪表厂 | Electrical-gas valve positioner with limiting position protecting part |
| CN103353007A (en) * | 2013-06-08 | 2013-10-16 | 高国平 | Pneumatic valve controller and control method thereof |
| CN106419750A (en) * | 2016-08-27 | 2017-02-22 | 朱树彪 | Control system of household kitchen oil cleaning device |
| CN108343774A (en) * | 2018-02-12 | 2018-07-31 | 嘉兴市丰收云科技有限公司 | Self-sustaining electromagnetic valve and intelligent fertilization system |
-
1999
- 1999-07-02 CN CN 99216215 patent/CN2388447Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047474A (en) * | 2012-12-07 | 2013-04-17 | 张跃 | Installation structure of high-temperature-resistance valve travel switch |
| CN103133749A (en) * | 2013-02-21 | 2013-06-05 | 常熟市维特隆自动化仪表厂 | Electrical-gas valve positioner with limiting position protecting part |
| CN103353007A (en) * | 2013-06-08 | 2013-10-16 | 高国平 | Pneumatic valve controller and control method thereof |
| CN103353007B (en) * | 2013-06-08 | 2015-09-16 | 宁波市镇海晴鑫石化机械设备有限公司 | Pneumatic valve controller and controlling method thereof |
| CN106419750A (en) * | 2016-08-27 | 2017-02-22 | 朱树彪 | Control system of household kitchen oil cleaning device |
| CN108343774A (en) * | 2018-02-12 | 2018-07-31 | 嘉兴市丰收云科技有限公司 | Self-sustaining electromagnetic valve and intelligent fertilization system |
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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 |