CN202545845U - Connecting structure for valve clack and valve rod of manual/pneumatic diaphragm type cutoff valve - Google Patents
Connecting structure for valve clack and valve rod of manual/pneumatic diaphragm type cutoff valve Download PDFInfo
- Publication number
- CN202545845U CN202545845U CN2012201820998U CN201220182099U CN202545845U CN 202545845 U CN202545845 U CN 202545845U CN 2012201820998 U CN2012201820998 U CN 2012201820998U CN 201220182099 U CN201220182099 U CN 201220182099U CN 202545845 U CN202545845 U CN 202545845U
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- Prior art keywords
- valve
- rod
- diaphragm type
- pneumatic diaphragm
- valve rod
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Abstract
The utility model discloses a connecting structure for a valve clack and a valve rod of a manual/pneumatic diaphragm type cutoff valve. The connecting structure comprises a valve body, a valve clack and a valve rod, wherein the upper port of the valve body is provided with a valve cover; a piston rod is connected to the upper end of the valve rod; the lower part of the piston rod is provided with a pressure block; the joint between the lower part of the pressure block and the valve body and the valve cover is provided with a diaphragm; and the inner wall of the upper cover is in sliding fit with the outer wall of the pressure block. The movement of the pressure block is constrained in a matching way, so that reliable moving accuracy is ensured.
Description
Technical field
The utility model relates to a kind of hand-operated pneumatic stop valve, relates in particular to the linkage structure of a kind of hand-operated pneumatic diaphragm type stop valve flap and valve rod.
Background technique
At present, manual or pneumatic stopping valve is widely used in fields such as bio-pharmaceuticals, fine chemistry industry, food chemical industry.
Stop valve of the prior art, the accuracy constraint in stem movement is relatively poor, causes valve opening to close the precision instability.
Summary of the invention
The purpose of the utility model provides a kind of valve opening, closes the hand-operated pneumatic diaphragm type stop valve flap of stable accuracy and the linkage structure of valve rod.
The purpose of the utility model realizes through following technological scheme:
The hand-operated pneumatic diaphragm type stop valve flap of the utility model and the linkage structure of valve rod; Comprise valve body, flap, valve rod; The valve gap that is provided with suitable for reading of said valve body, the upper end of said valve rod is connected with piston rod, and the bottom of said piston rod is provided with briquetting; The junction point of the bottom of said briquetting and said valve body and valve gap is provided with diaphragm, and the inwall of said loam cake and the outer wall of said briquetting are slidingly matched.
Technological scheme by above-mentioned the utility model provides can be found out; The hand-operated pneumatic diaphragm type stop valve flap that the utility model provides and the linkage structure of valve rod; Because the inwall of loam cake and the outer wall of briquetting are slidingly matched, fiting constraint has been carried out in the briquetting motion, guaranteed that kinematic accuracy is reliable.
Description of drawings
The structural representation of the hand-operated pneumatic diaphragm type stop valve flap that Fig. 1 provides for the utility model embodiment and the linkage structure of valve rod.
Among the figure: 1, valve body; 2, flap; 3, valve rod; 4, diaphragm; 5, briquetting; 6, valve gap; 7, piston rod (connecting actuator);
Embodiment
To do to describe in detail further to the utility model embodiment below.
The hand-operated pneumatic diaphragm type stop valve flap of the utility model and the linkage structure of valve rod, its preferable embodiment is as shown in Figure 1:
Comprise valve body, flap, valve rod; The valve gap that is provided with suitable for reading of said valve body; The upper end of said valve rod is connected with piston rod; The bottom of said piston rod is provided with briquetting, and the junction point of the bottom of said briquetting and said valve body and valve gap is provided with diaphragm, and the inwall of said loam cake and the outer wall of said briquetting are slidingly matched.
Said piston rod is connected with pneumatic or manual actuator.
In the utility model, fiting constraint has been carried out in briquetting 5 motions, guaranteed that piston rod 7, briquetting 5, valve rod 3 are one, guaranteed concentricity, kinematic accuracy is reliable.Overcome the unsettled defective of valve rod 3 motions, guaranteed the valve longer service life, the easily damaged parts replacement cycle is longer.
The above; Be merely the preferable embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claims.
Claims (2)
1. the linkage structure of hand-operated pneumatic diaphragm type stop valve flap and valve rod; Comprise valve body, flap, valve rod, the valve gap that is provided with suitable for reading of said valve body, the upper end of said valve rod is connected with piston rod; It is characterized in that; The bottom of said piston rod is provided with briquetting, and the junction point of the bottom of said briquetting and said valve body and valve gap is provided with diaphragm, and the inwall of said loam cake and the outer wall of said briquetting are slidingly matched.
2. the linkage structure of hand-operated pneumatic diaphragm type stop valve flap according to claim 1 and valve rod is characterized in that said piston rod is connected with pneumatic or manual actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201820998U CN202545845U (en) | 2012-04-25 | 2012-04-25 | Connecting structure for valve clack and valve rod of manual/pneumatic diaphragm type cutoff valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201820998U CN202545845U (en) | 2012-04-25 | 2012-04-25 | Connecting structure for valve clack and valve rod of manual/pneumatic diaphragm type cutoff valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545845U true CN202545845U (en) | 2012-11-21 |
Family
ID=47166483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201820998U Expired - Lifetime CN202545845U (en) | 2012-04-25 | 2012-04-25 | Connecting structure for valve clack and valve rod of manual/pneumatic diaphragm type cutoff valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545845U (en) |
-
2012
- 2012-04-25 CN CN2012201820998U patent/CN202545845U/en not_active Expired - Lifetime
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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: 20121121 |
|
| CX01 | Expiry of patent term |