CN202901506U - Valve positioning device - Google Patents
Valve positioning device Download PDFInfo
- Publication number
- CN202901506U CN202901506U CN 201220633023 CN201220633023U CN202901506U CN 202901506 U CN202901506 U CN 202901506U CN 201220633023 CN201220633023 CN 201220633023 CN 201220633023 U CN201220633023 U CN 201220633023U CN 202901506 U CN202901506 U CN 202901506U
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- CN
- China
- Prior art keywords
- valve
- rod
- feedback disc
- reaction plate
- positioning
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- Expired - Lifetime
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Abstract
The utility model relates to the technical field of automatic control, and discloses a valve positioning device. The valve positioning device comprises a feedback disc A and a feedback disc B, and is characterized in that a fixing installment hole is fixed at the center of the feedback disc A, the diameter of the fixing installment hole is larger than that of a valve rod of an adjustment valve, and further a positioning clamping groove is arranged on the feedback disc A. A connection hole is arranged at the center of the feedback disc B and fits a fracture surface of a positioning rod of a valve positioner, the feedback disc B is further provided with a metal rod, and the outer diameter of the metal rod is smaller than the width of the positioning clamping groove on the feedback disc A. When the valve positioning device is used, the feedback disc A is sleeved on the valve rod of the adjustment valve and is fixed through a screw; the feedback disc B is sleeved on the positioning rod of the valve positioner, the metal rod on the feedback disc B penetrates through the positioning clamping groove on the feedback disc A, and the connection of the feedback disc A and the feedback disc B is achieved through the connection of the metal rod and the positioning clamping groove; and accordingly position information of the valve rod of the pneumatic adjustment valve is transmitted to a control system operation adjustment valve. The valve positioning device has the advantages of being precise in positioning, convenient to arrange and the like, and is particularly suitable for a concentrating mill and a chemical factory.
Description
Technical field
The utility model relates to the automatic control field, particularly relates to a kind of valve positioning device.
Background technique
Modulating valve is the requisite manufacture control equipment in large enterprise ore dressing plant and chemical plant, because production technology demand and product quality indicator requirement, must strictly control several different production raw material ratios, the control of liquid raw material is mainly realized by modulating valve.The series of problems such as if the control valve opening inaccuracy will cause the production raw material ratio unbalance, and wastage of material and end product are off quality.
Valve positioner is the main accessories of modulating valve, and common and modulating valve supports the use, and it accepts the output signal of modulating valve, then removes the regulating and controlling valve with its output signal.After the modulating valve action, the displacement of regulating valve rod feeds back to valve positioner by mechanical device (position feedback dish) again, it is with the feedback measurement signal of displacement of valve rod signal as input, with controller output signal as setting signal, compare, when both have deviation, change it to the output signal of actuator, make actuator's action, set up the one-to-one relationship between displacement of valve rod and the controller output signal.Therefore, valve positioner forms take displacement of valve rod as measurement signal, is output as the feedback control system of setting signal with controller.The manipulated variable of this control system is the output signal that valve positioner goes to actuator.
At present, the valve positioner displacement of valve rod that most of factory uses feeds back to valve positioner by the position feedback dish, it is bad that two parts of the position feedback dish of prior art (reaction plate A and reaction plate B) are connected, and causes the modulating valve location inaccurate, and deviation appears in control valve opening.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, provides simple in structure, practical, effective
A kind of valve positioning device, with accurate feedback displacement of valve rod, thus the fine adjustment valve opening.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of valve positioning device comprises reaction plate A and reaction plate B, it is characterized in that there is the fixed installation hole at described reaction plate A center, and the fixed installation bore dia also is equipped with locating groove greater than the regulating valve rod diameter on the reaction plate A; There is attachment hole at described reaction plate B center, and attachment hole conforms to valve positioner positioning rod section, also is equipped with metallic rod on the reaction plate B, and the metallic rod external diameter is less than the locating groove width on the reaction plate A.
During use, reaction plate A is enclosed within on the regulating valve rod, is screwed; Reaction plate B is enclosed within on the positioning work piece positioning rod, metallic rod on the reaction plate B is passed the locating groove on the reaction plate A, be connected connection with locating groove by metallic rod and realize that reaction plate A is connected connection with reaction plate B, the position information of pneumatic control valve valve rod is passed to control system through valve positioner handle modulating valve.
The utlity model has following advantage:
1, is connected tight between reaction plate A and the reaction plate B, accurate positioning.
2, not affected by environment, applied widely, non-maintaining for a long time.
3, distance is adjustable, easy for installation between the reaction plate A reaction plate B.
4, raw material are simple, make easy-formation.
A kind of valve positioning device that the utility model provides uses proof by reality, has reached predetermined purpose, is particularly useful for the aperture location of ore dressing plant and chemical plant modulating valve.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Fig. 2 is the Facad structure schematic diagram of reaction plate A;
Fig. 3 is the sectional view of reaction plate A;
Fig. 4 is the Facad structure schematic diagram of reaction plate B;
Fig. 5 is the sectional view of reaction plate B;
Among the figure: 1 reaction plate A, 2 fixed installation holes, 3 locating grooves, 4 reaction plate B, 5 attachment holes, 6 metallic rod, 7 valve rods, 8 positioning rods.
Embodiment:
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Embodiment:
Accompanying drawing has been illustrated structure of the present utility model, as shown in the figure, and a kind of valve positioning device, comprise reaction plate A1 and reaction plate B4, it is characterized in that there is fixed installation hole 2 at described reaction plate A1 center, fixed installation hole 2 diameters also are equipped with locating groove 3 greater than regulating valve rod 7 diameters on the reaction plate A1; There is attachment hole 5 at described reaction plate B4 center, and attachment hole 5 conforms to valve positioner positioning rod 8 sections, also is equipped with metallic rod 6 on the reaction plate B4, and metallic rod 6 external diameters are less than the width of the locating groove 3 on the reaction plate A1.
During use, reaction plate A1 is enclosed within on the regulating valve rod 7, is screwed; Reaction plate B4 is enclosed within on the positioning work piece positioning rod 8, metallic rod 6 on the reaction plate B4 is passed the locating groove 3 on the reaction plate A1, the connection of being connected with locating groove by metallic rod 6 realizes that reaction plate A1 is connected connection with reaction plate B4, the position information of pneumatic control valve valve rod 7 is passed to control system handle modulating valve.
Claims (1)
1. valve positioning device, comprise reaction plate A(1) and reaction plate B(4), it is characterized in that described reaction plate A(1) there is fixed installation hole (2) at the center, fixed installation hole (2) diameter is greater than regulating valve rod (7) diameter, reaction plate A(1) on also be equipped with locating groove (3); Described reaction plate B(4) there is attachment hole (5) at the center, attachment hole (5) conforms to valve positioner positioning rod (8) section, reaction plate B(4) also be equipped with metallic rod (6) on, metallic rod (6) external diameter is less than reaction plate A(1) on the width of locating groove (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633023 CN202901506U (en) | 2012-11-27 | 2012-11-27 | Valve positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633023 CN202901506U (en) | 2012-11-27 | 2012-11-27 | Valve positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202901506U true CN202901506U (en) | 2013-04-24 |
Family
ID=48122177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220633023 Expired - Lifetime CN202901506U (en) | 2012-11-27 | 2012-11-27 | Valve positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202901506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363186A (en) * | 2013-07-26 | 2013-10-23 | 常熟市华夏仪表有限公司 | Shaft feedback device of electro-pneumatic valve positioner |
-
2012
- 2012-11-27 CN CN 201220633023 patent/CN202901506U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363186A (en) * | 2013-07-26 | 2013-10-23 | 常熟市华夏仪表有限公司 | Shaft feedback device of electro-pneumatic valve positioner |
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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 |
Granted publication date: 20130424 |
|
| CX01 | Expiry of patent term |