CN202280916U - Connecting device for connecting push rod with valve rod - Google Patents
Connecting device for connecting push rod with valve rod Download PDFInfo
- Publication number
- CN202280916U CN202280916U CN2011204158302U CN201120415830U CN202280916U CN 202280916 U CN202280916 U CN 202280916U CN 2011204158302 U CN2011204158302 U CN 2011204158302U CN 201120415830 U CN201120415830 U CN 201120415830U CN 202280916 U CN202280916 U CN 202280916U
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- China
- Prior art keywords
- push rod
- valve
- valve rod
- rod
- screw thread
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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 - Lifetime
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Abstract
The utility model discloses a connecting device for connecting a push rod with a valve rod, and the connecting device is applied to a pneumatic film actuating mechanism. The connecting device comprises a push rod connecting element and a valve rod connecting element, wherein the push rod connecting element is arranged on the push rod, and the valve rod connecting element is arranged on the valve rod; and the push rod connecting element is connected with the valve rod connecting element. Compared with the prior art, the connecting device disclosed by the utility model has the following advantages: 1, when the connecting device disclosed by the utility model is adopted for connecting the valve rod and the push rod, the requirements on the centering of the valve rod and the push rod can be reduced, thus the processing requirements on parts are reduced, and in the processes of production and use, the cost is saved, and the amount of labor is reduced; 2, by using the connecting device disclosed by the utility model, the work amount for assembly can be reduced, and the occurrence of repairing due to the poor centering of the valve rod and the push rod can be avoided; and 3, after the valve rod and the push rod are connected, the occurrence of a situation that the packing is greatly damaged and even the service life of a valve is influenced by the valve rod bending due to the poor centering of the valve rod and the push rod can be avoided.
Description
Technical field
The utility model relates to actuator's technical field that modulating valve automatically adjusts, and particularly a kind ofly is applied to the connection set that being used in the pneumatic diaphragn actuating mechanism connects push rod and valve rod.
Background technique
Pneumatic diaphragm control valve is a kind of regulating controller in the pneumatic unit combination instrument; Be to produce to carry out one of important step in the process automatic regulating system; It is accepted the output signal of regulation meter and closes and Open valve; Reach the isoparametric automatic adjusting of pressure, temperature, flow and liquid level, can be widely used in the automatic adjusting and the telecontrol of chemical industry, oil, metallurgy, electric power, light textile industry.At present, pneumatic diaphragm control valve commonly used mainly is made up of valve mechanism and actuator, and the push rod that links to each other through the centre between the two connects.Existing actuator by last membrane cover, down membrane cover, diaphragm, spring and down the support that links to each other of membrane cover bottom forms, on support, be mounted with a slippage up and down, also can connect the push rod of diaphragm and valve mechanism valve rod; Film chamber in the said actuator is communicated with outside control source of the gas, after signal pressure input film chamber, on diaphragm, produces thrust; Pressure spring; Push rod is moved, and push rod drives the valve rod that links to each other, and changes the Flow area between spool and the valve seat; Reach the reaction force of spring and thrust that signal pressure acts on the diaphragm and balance each other, thereby reach the purpose of automatic adjusting process parameter.
The push rod 1 of existing pneumatic diaphragn actuating mechanism is to be connected through two vertical SMD parts 60 with valve rod 2; Like Fig. 1; The edge vertically is provided with screw thread in the middle of two parts 60; During connection, two parts 60 connect through screw 61, the screw thread of the screw thread of push rod 1 and valve rod 2 all with the vertical screw-thread fit of two parts 60.
But there are following defective in the push rod of the actuator of existing air bladder and the Placement of valve rod:
1, this kind Placement to push rod and valve rod neutrality is required very high, thereby increased the processing request of part greatly;
2, connect after, if push rod and valve rod is bad to neutrality, in the working procedure afterwards, be easy to cause valve rod crooked, thereby filler damaged very big, even have a strong impact on working life of valve.
The model utility content
The utility model purpose is to provide a kind of connection set that is used to connect push rod and valve rod; With very high to push rod and valve rod of the Placement of the push rod that solves the actuator of existing air bladder in the existing technology and valve rod, thereby the technical matters of the processing request of part have been increased greatly to the neutrality requirement.
The utility model purpose realizes through following technological scheme:
A kind of connection set that is used to connect push rod and valve rod is applied in the pneumatic diaphragn actuating mechanism, comprises the push rod link that is arranged on the push rod and the valve stem coupling member on the valve rod is set, and said push rod link is connected with said valve stem coupling member.
Preferably, said push rod link is provided with and is used for some first screw thread via holes of being connected with said valve stem coupling member, and said valve stem coupling member is provided with and corresponding first tapped hole of the said first screw thread via hole.
Preferably, the aperture of more said first tapped hole in the aperture of the said first screw thread via hole is big.
Preferably, said valve stem coupling member is provided with and is used for some second screw thread via holes of being connected with said push rod link, and said push rod link is provided with and corresponding second tapped hole of the said second screw thread via hole.
Preferably, the aperture of more said second tapped hole in the aperture of the said second screw thread via hole is big.
Preferably, said push rod link is provided with and is used for the 3rd tapped hole that is connected with said push rod, and said push rod is provided with first screw thread that matches with said the 3rd tapped hole.
Preferably, said valve stem coupling member is provided with and is used for the 4th tapped hole that is connected with said valve rod, and said valve rod is provided with second screw thread that matches with said the 4th tapped hole.
Compared with prior art, the utility model has following advantage:
1, adopt the utility model connection set, when connecting valve rod with push rod, can reduce to valve rod and push rod to requirement of neutral, thereby reduction can make in production and using process to the processing request of part, both saved cost, reduce the amount of labour again;
2, adopt the connection set of the utility model, can reduce the workload of assembling, can avoid the not high situation of reprocessing of neutrality is taken place owing to valve rod and push rod;
3, at valve rod with after push rod is connected, can avoid crooked owing to push rod and valve rod, thereby cause the damage of filler very greatly the bad valve rod that causes of neutrality, even have a strong impact on the situation in the working life of valve and take place.
Description of drawings
Fig. 1 be existing air bladder actuator push rod and valve rod be connected schematic representation;
Fig. 2 is the plan view of the push rod link of the utility model;
Fig. 3 is the plan view of the valve stem coupling member of the utility model;
Fig. 4 is the schematic representation that the connection set of the utility model is used.
Embodiment
Below in conjunction with accompanying drawing, specify the utility model.
See also Fig. 2-4; The connection set that is used to connect push rod and valve rod of the utility model; Be applied in the pneumatic diaphragn actuating mechanism, comprise the push rod link 11 that is arranged on the push rod 1 and the valve stem coupling member 21 on the valve rod 2 is set, push rod link 11 is connected with valve stem coupling member 21.
One embodiment of the utility model, push rod link 11 is provided with and is used for some first screw thread via holes 111 of being connected with valve stem coupling member 21, and in this example, the first screw thread via hole 111 is 4, like Fig. 2.Valve stem coupling member 21 is provided with and the first screw thread via hole, 111 corresponding first tapped holes 211, and in this example, first tapped hole 211 is 4, like Fig. 3.The aperture of the first screw thread via hole 111 is big than the aperture of first tapped hole 211; When the center of push rod 1 and valve rod 2 misaligns; Through the screw thread via hole 111 on the push rod link 11, can in certain scope, regulate, so the requirement to neutrality of valve rod 2 and push rod 1 is reduced greatly.It is parallel just passable that this kind structural requirement push rod and valve rod need only when being connected, might not be entirely on the center, in the middle of work, can not cause the bending of valve rod yet, and the requirement of processing is also reduced relatively.
Another embodiment of the utility model, valve stem coupling member are provided with and are used for some second screw thread via holes of being connected with the push rod link, and the push rod link is provided with and corresponding second tapped hole of the second screw thread via hole.The aperture of the second screw thread via hole is big than the aperture of second tapped hole, when the center of push rod and valve rod misaligns, through the screw thread via hole on the valve stem coupling member, can in certain scope, regulate, so the requirement to neutrality of valve rod and push rod is reduced greatly.It is parallel just passable that this kind structural requirement push rod and valve rod need only when being connected, might not be entirely on the center, in the middle of work, can not cause the bending of valve rod yet, and the requirement of processing is also reduced relatively.
When connecting; Earlier with fixing in threaded end precession the 3rd tapped hole 112 of push rod 1; With fixing in threaded end precession the 4th tapped hole 212 of valve rod 2; Again socket head screw 30 is passed the screw thread via hole 111 of push rod link 11 and the tapped hole 211 of valve stem coupling member, thereby realize being connected of push rod 1 and valve rod 2, like Fig. 4.The relative position of regulating valve stem link and push rod link in the process of tightening makes valve rod or centering parallel with push rod, so that the normal operation of the actuator of air bladder.
Adopt the utility model connection set, when connecting valve rod with push rod, can reduce to valve rod and push rod to requirement of neutral, thereby reduction can make in production and using process to the processing request of part, both saved cost, reduce the amount of labour again; Simultaneously, adopt the connection set of the utility model, can reduce the workload of assembling, can avoid the not high situation of reprocessing of neutrality is taken place owing to valve rod and push rod; And, with after push rod is connected, can avoid crooked owing to push rod and valve rod at valve rod, thereby cause the damage of filler very greatly the bad valve rod that causes of neutrality, even have a strong impact on the situation in the working life of valve and take place.
More than the disclosed several specific embodiments that are merely the application, but the application is not limited thereto, any those skilled in the art can think variation, all should drop in the application's the protection domain.
Claims (7)
1. connection set that is used to connect push rod and valve rod; Be applied in the pneumatic diaphragn actuating mechanism; It is characterized in that comprise the push rod link that is arranged on the push rod and the valve stem coupling member on the valve rod is set, said push rod link is connected with said valve stem coupling member.
2. a kind of connection set that is used to connect push rod and valve rod as claimed in claim 1; It is characterized in that; Said push rod link is provided with and is used for some first screw thread via holes of being connected with said valve stem coupling member, and said valve stem coupling member is provided with and corresponding first tapped hole of the said first screw thread via hole.
3. a kind of connection set that is used to connect push rod and valve rod as claimed in claim 2 is characterized in that the aperture of more said first tapped hole in the aperture of the said first screw thread via hole is big.
4. a kind of connection set that is used to connect push rod and valve rod as claimed in claim 1; It is characterized in that; Said valve stem coupling member is provided with and is used for some second screw thread via holes of being connected with said push rod link, and said push rod link is provided with and corresponding second tapped hole of the said second screw thread via hole.
5. a kind of connection set that is used to connect push rod and valve rod as claimed in claim 4 is characterized in that the aperture of more said second tapped hole in the aperture of the said second screw thread via hole is big.
6. a kind of connection set that is used to connect push rod and valve rod as claimed in claim 1; It is characterized in that; Said push rod link is provided with and is used for the 3rd tapped hole that is connected with said push rod, and said push rod is provided with first screw thread that matches with said the 3rd tapped hole.
7. a kind of connection set that is used to connect push rod and valve rod as claimed in claim 1; It is characterized in that; Said valve stem coupling member is provided with and is used for the 4th tapped hole that is connected with said valve rod, and said valve rod is provided with second screw thread that matches with said the 4th tapped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204158302U CN202280916U (en) | 2011-10-27 | 2011-10-27 | Connecting device for connecting push rod with valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204158302U CN202280916U (en) | 2011-10-27 | 2011-10-27 | Connecting device for connecting push rod with valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280916U true CN202280916U (en) | 2012-06-20 |
Family
ID=46227085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204158302U Expired - Lifetime CN202280916U (en) | 2011-10-27 | 2011-10-27 | Connecting device for connecting push rod with valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742713A (en) * | 2013-12-31 | 2014-04-23 | 浙江中控流体技术有限公司 | Connecting device used for connecting valve rod with push rod |
-
2011
- 2011-10-27 CN CN2011204158302U patent/CN202280916U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742713A (en) * | 2013-12-31 | 2014-04-23 | 浙江中控流体技术有限公司 | Connecting device used for connecting valve rod with push rod |
| CN103742713B (en) * | 2013-12-31 | 2016-03-16 | 浙江中控流体技术有限公司 | A kind of connection set for connecting valve rod and push rod |
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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: 20120620 |
|
| CX01 | Expiry of patent term |