CN204114226U - A kind of plug valve shaft double sealing structure - Google Patents
A kind of plug valve shaft double sealing structure Download PDFInfo
- Publication number
- CN204114226U CN204114226U CN201420564804.XU CN201420564804U CN204114226U CN 204114226 U CN204114226 U CN 204114226U CN 201420564804 U CN201420564804 U CN 201420564804U CN 204114226 U CN204114226 U CN 204114226U
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- CN
- China
- Prior art keywords
- valve shaft
- valve
- bearing
- sealing structure
- adjustable
- 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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- Lift Valve (AREA)
- Details Of Valves (AREA)
- Sliding Valves (AREA)
Abstract
A kind of plug valve shaft double sealing structure, at least comprises valve shaft, bearing, adjustable v-type filler, an O type circle, plane sliding bearing, encapsulate projection, valve body and spool; Described valve shaft inserts and is arranged in the bearing of upper end in rotating piston valve shaft, and valve shaft periphery is provided with adjustable v-type filler, and valve shaft bottom connects with the spool be arranged in valve body; This plug valve shaft double sealing structure, the upper valve shaft of stopcock designs the structure of double seal, to guarantee to run in lubrication with under asking clean condition between valve shaft and bearing, reduce the torsion of valve, increase the reliability do not leaked outside of valve, extend the working life of valve simultaneously.
Description
Technical field
The utility model relates to rotary valve applied technical field, especially a kind of plug valve shaft double sealing structure.
Background technique
The special construction design of stopcock makes it in sewage treatment industry application widely, but, on the one hand, in the use of reality, the medium in sewage is once enter into the gap of valve shaft and bearing, and the torsion of valve can increase, too increase the fretting wear of axle and bearing simultaneously, reduce working life.The double sealing structure impurity well solved in sewage enters the problem of valve shaft and bearing play, ensure to run lubricating in clean environment between valve shaft and bearing, torsion can not increase, and working life is also longer, also substantially increases the reliability that valve does not leak outside simultaneously.
On the other hand, stopcock is in the use of reality, and the body cavity of common square opening stopcock is not smooth transition, and the impurity in medium is easy to deposit at the inner chamber of valve body, and when after the too much impurity of deposition, impurity can affect the normal operation of valve.Producer is had to be the problem being intersected the smooth transition of the runner improving body cavity by two orthogonal cylinders at present, because the diameter of two cylinders is different, though the runner that makes moderate progress after therefore intersecting still is not smooth transition.The utility model be utilize orthogonal circular cone and cylinder tangent, cutting out mutually is smooth transition certainly, the deposition of the impurity in the medium just well avoided in the use of reality like this.
Prior art can not meet the needs of people, for making up prior art deficiency, it is simple that the utility model aims to provide a kind of structure, only increase little processing cost, well solve the problem of valve in use torsion increase in actual use, add the reliability that medium does not leak outside, extend the plug valve shaft double sealing structure in the working life of valve simultaneously.
For achieving the above object, the utility model by the following technical solutions: a kind of plug valve shaft double sealing structure, at least comprises valve shaft, bearing, adjustable v-type filler, an O type circle, plane sliding bearing, encapsulate projection, valve body and spool; Described valve shaft inserts and is arranged in the bearing of upper end in rotating piston valve shaft, and valve shaft periphery is provided with adjustable v-type filler, and valve shaft bottom connects with the spool be arranged in valve body; A described O type circle and encapsulate projection are all arranged on plane sliding bearing near media end.
As optimisation technique scheme of the present utility model, described adjustable v-type filler and an O type circle are separately positioned on the nearly media end of bearing and media end far away; Described body cavity becomes smooth transition structure.
Compared with prior art, the beneficial effects of the utility model are: this plug valve shaft double sealing structure, the upper valve shaft of stopcock designs the structure of double seal, to guarantee to run in lubrication with under asking clean condition between valve shaft and bearing, reduce the torsion of valve, increase the reliability do not leaked outside of valve, extend the working life of valve simultaneously; Sealed by first, avoid the impurity in medium to enter the gap of bearing and valve shaft, second not to leak outside reliability to improve medium.Reach the impurity of valve in use in medium to deposit at the inner chamber of valve body simultaneously; Overall structure is simply compact, easily manufactured, practical, is easy to promote the use of.
Model utility content
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the close-up schematic view of A in Fig. 1;
Fig. 3 is the close-up schematic view of B in Fig. 2;
Fig. 4 is the utility model C-C standard-sized sheet structural representation;
Fig. 5 is the utility model C-C full cut-off structural representation;
Wherein: 1, valve shaft, 2, bearing, 3, adjustable v-type filler, the 4, the one O type circle, 5, plane sliding bearing, 6, encapsulate is protruding, 7, valve body, 8, spool.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 ~ 5, in the utility model embodiment, a kind of plug valve shaft double sealing structure, at least comprises valve shaft 1, bearing 2, adjustable v-type filler 3, an O type circle 4, plane sliding bearing 5, encapsulate projection 6, valve body 7 and spool 8; Described valve shaft 1 inserts and is arranged in the bearing 2 of upper end in rotating piston valve shaft, and valve shaft 1 periphery is provided with adjustable v-type filler 3, and valve shaft 1 bottom connects with the spool 8 be arranged in valve body 7; A described O type circle 4 and encapsulate projection 6 are all arranged on plane sliding bearing 5 near media end.
As optimisation technique scheme of the present utility model, described adjustable v-type filler 3 and an O type circle 4 are separately positioned on the nearly media end of bearing and media end far away; Described valve body 7 inner chamber becomes smooth transition structure.
The utility model is when designing: the sealing pair designing one O type circle sealing and spool encapsulate end and plane sliding bearing at the nearly media end of bearing, one adjustable v-type packing seal is designed at the media end far away of bearing, the material of O type circle and the material of V-type filler according to the difference of medium, can select NBR, EPDM, VITON etc.
During valve design, increase a circular cone and valve body main structure cylindrical tangent, and form a smooth excessive runner, thus avoid the deposition of impurity in valve body in medium.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any reference character in claim should be considered as the claim involved by limiting.
The above; be only preferred embodiment of the present utility model; not in order to limit the utility model, every above embodiment is done according to technical spirit of the present utility model any trickle amendment, equivalently replace and improve, within the protection domain that all should be included in technical solutions of the utility model.
Claims (2)
1. a plug valve shaft double sealing structure, at least comprises valve shaft (1), bearing (2), adjustable v-type filler (3), an O type circle (4), plane sliding bearing (5), encapsulate projection (6), valve body (7) and spool (8); It is characterized in that: described valve shaft (1) inserts and is arranged in the bearing (2) of upper end in rotating piston valve shaft, and valve shaft (1) periphery is provided with adjustable v-type filler (3), and valve shaft (1) bottom connects with the spool (8) be arranged in valve body (7); A described O type circle (4) and encapsulate projection (6) are all arranged on plane sliding bearing (5) near media end.
2. a kind of plug valve shaft double sealing structure according to claim 1, is characterized in that: described adjustable v-type filler (3) and an O type circle (4) are separately positioned on the nearly media end of bearing and media end far away; Described valve body (7) inner chamber becomes smooth transition structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564804.XU CN204114226U (en) | 2014-09-28 | 2014-09-28 | A kind of plug valve shaft double sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564804.XU CN204114226U (en) | 2014-09-28 | 2014-09-28 | A kind of plug valve shaft double sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204114226U true CN204114226U (en) | 2015-01-21 |
Family
ID=52331538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420564804.XU Expired - Fee Related CN204114226U (en) | 2014-09-28 | 2014-09-28 | A kind of plug valve shaft double sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204114226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102292754B1 (en) * | 2020-06-25 | 2021-08-25 | 티에스모스트 주식회사 | Ball valve |
-
2014
- 2014-09-28 CN CN201420564804.XU patent/CN204114226U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102292754B1 (en) * | 2020-06-25 | 2021-08-25 | 티에스모스트 주식회사 | Ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20150928 |
|
| EXPY | Termination of patent right or utility model |