CN202493770U - Follow-up shaft seal ring structure of butterfly valve - Google Patents
Follow-up shaft seal ring structure of butterfly valve Download PDFInfo
- Publication number
- CN202493770U CN202493770U CN2012200725318U CN201220072531U CN202493770U CN 202493770 U CN202493770 U CN 202493770U CN 2012200725318 U CN2012200725318 U CN 2012200725318U CN 201220072531 U CN201220072531 U CN 201220072531U CN 202493770 U CN202493770 U CN 202493770U
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- China
- Prior art keywords
- valve
- follow
- valve seat
- seal ring
- ring structure
- 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 - Lifetime
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Abstract
The utility model relates to a follow-up shaft seal ring structure of a butterfly valve. The butterfly valve comprises a valve rod and a valve seat, wherein the valve rod is inserted onto the valve seat, the valve seat comprises an upper valve seat and a lower valve seat, the shaft seal ring structurally comprises a follow-up ring and a sealed rubber flange, the follow-up ring is arranged in a space defined by two end surfaces of the upper valve seat and the lower valve seat, and the sealed rubber flange is arranged at a connecting part between the valve rod and the valve seat. Compared with the prior art, the follow-up shaft seal ring structure has the advantages of good sealing effect, small wear to sealed rubber and the like.
Description
Technical field
The utility model relates to a kind of structure, especially relates to a kind of butterfly valve servo axis seal ring structure.
Background technique
In China's cities and towns water supply and sewerage pipeline; What most valve pipes used is soft sealing butterfly valve; The soft sealing butterfly valve shaft seal structure device that existing market is used is that valve seat and valve rod connection area are provided with the rubber seal flange, rubber seal flange and valve rod is held tightly, thereby reached sealing purpose.Its deficiency is: when the soft sealing butterfly valve valve plate is in closed condition, influenced by ducted working pressure, valve rod can squint; Make the rubber seal flange between valve seat and the valve rod have the gap; In case run-off the straight when valve rod is stressed is bigger to the wearing and tearing of valve seat, thereby causes sealability bad; The seepage phenomenon generally occurs, the working life of valve is short.
The model utility content
The purpose of the utility model is exactly for the defective that overcomes above-mentioned existing technology existence the better butterfly valve servo axis of a kind of sealability seal ring structure to be provided.
The purpose of the utility model can realize through following technological scheme:
A kind of butterfly valve servo axis seal ring structure; Described butterfly valve comprises valve rod and valve seat, and described valve rod is plugged on the valve seat, and described valve seat comprises upper valve base and lower valve base; It is characterized in that; Described packing ring structure comprises follow-up ring and caulking gum flange, and described follow-up ring is arranged at upper valve base lower valve base both ends of the surface and surrounds in the space, and described caulking gum flange is arranged at valve rod and valve seat connection part.
Described caulking gum flange is provided with 3.
Described follow-up ring is a cirque structure, and this follow-up ring is provided with at least one hole and groove.
Compared with prior art, the utlity model has simple in structure, easy to operate, good seal performance, be specially:
1, described follow-up ring is a circular shape rigidity material; In be provided with a plurality of auxiliary holes and groove; When follow-up ring is placed on the valve seat both ends of the surface and coats in the space form; Guarantee the stability of follow-up ring in valve seat, the existence of follow-up ring increases the following property of the relative valve rod of axle envelope main body, guarantees that the rubber decrement is even;
Even 2 valves receive working pressure to do the time spent, still can keep good sealing property under the situation of valve rod skew and inclination in pipeline.
Description of drawings
Fig. 1 is the utility model servo axis seal ring structure generalized section.
Among Fig. 1: 1-valve seat, 2-valve rod, 3-follow-up ring, the 4-first caulking gum flange, the 5-second caulking gum flange, 6-the 3rd caulking gum flange.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
As shown in Figure 1, a kind of butterfly valve servo axis seal ring structure, described butterfly valve comprise valve rod 2 and valve seat 1; Described valve rod 2 is plugged on the valve seat 1; Described valve seat 1 comprises upper valve base and lower valve base, and described packing ring structure comprises follow-up ring 3 and caulking gum flange, and described follow-up ring 3 is arranged at the lower valve base both ends of the surface and surrounds in the space; Described follow-up ring 3 is a cirque structure, in be provided with a plurality of auxiliary holes and groove.Described caulking gum flange is arranged at valve rod and valve seat connection part, totally 3, is respectively the first caulking gum flange 4, the second caulking gum flange 5 and the 3rd caulking gum flange 6.
When the valve plate of soft sealing butterfly valve is closed, influenced by working pressure, skew takes place and tilts in valve rod.At this moment; The caulking gum flange that follow-up ring 3 drives valve seat 1 is followed valve rod 2 to squint together and is tilted; Guaranteed that the rubber decrement is even, solved valve and in pipeline, received working pressure to do the time spent, valve rod skew and tilt and form sealing flange and produce gap, caulking gum wearing and tearing; Cause the seepage phenomenon, valve short problem in working life.
Claims (3)
1. butterfly valve servo axis seal ring structure; Described butterfly valve comprises valve rod and valve seat, and described valve rod is plugged on the valve seat, and described valve seat comprises upper valve base and lower valve base; It is characterized in that; Described packing ring structure comprises follow-up ring and caulking gum flange, and described follow-up ring is arranged at upper valve base lower valve base both ends of the surface and surrounds in the space, and described caulking gum flange is arranged at valve rod and valve seat connection part.
2. a kind of butterfly valve servo axis seal ring structure according to claim 1 is characterized in that described caulking gum flange is provided with 3.
3. a kind of butterfly valve servo axis seal ring structure according to claim 1 is characterized in that described follow-up ring is a cirque structure, and this follow-up ring is provided with at least one hole and groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200725318U CN202493770U (en) | 2012-02-29 | 2012-02-29 | Follow-up shaft seal ring structure of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200725318U CN202493770U (en) | 2012-02-29 | 2012-02-29 | Follow-up shaft seal ring structure of butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493770U true CN202493770U (en) | 2012-10-17 |
Family
ID=46999999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200725318U Expired - Lifetime CN202493770U (en) | 2012-02-29 | 2012-02-29 | Follow-up shaft seal ring structure of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493770U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526355A (en) * | 2015-11-09 | 2016-04-27 | 宁波市鄞州飞矢机械密封件厂 | Device used for mechanical sealing |
| CN105546137A (en) * | 2016-02-02 | 2016-05-04 | 慈溪市东南复合材料有限公司 | Sealing structure |
-
2012
- 2012-02-29 CN CN2012200725318U patent/CN202493770U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526355A (en) * | 2015-11-09 | 2016-04-27 | 宁波市鄞州飞矢机械密封件厂 | Device used for mechanical sealing |
| CN105546137A (en) * | 2016-02-02 | 2016-05-04 | 慈溪市东南复合材料有限公司 | Sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jiading District Huangdu town Lianxing Lianxing village road 201804 Shanghai City No. 88 Patentee after: SHANGHAI GUANLONG VALVE AUTOMATION Co.,Ltd. Address before: Jiading District Huangdu town Lianxing Lianxing village road 201804 Shanghai City No. 88 Patentee before: SHANGHAI CHIRONG AUTOMATION Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |
|
| CX01 | Expiry of patent term |