CN204704415U - A kind of floating valve seat structure of two way sealed eccentric half-ball valve - Google Patents
A kind of floating valve seat structure of two way sealed eccentric half-ball valve Download PDFInfo
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- CN204704415U CN204704415U CN201520386922.0U CN201520386922U CN204704415U CN 204704415 U CN204704415 U CN 204704415U CN 201520386922 U CN201520386922 U CN 201520386922U CN 204704415 U CN204704415 U CN 204704415U
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- valve seat
- ladder surface
- vertical ladder
- sealing
- valve
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Abstract
A kind of floating valve seat structure of two way sealed eccentric half-ball valve, comprise valve seat and the back-up ring for carrying out axial limiting to valve seat, valve seat and valve body fitting surface are ladder surface, form upper plenum and lower cavity, the spring being in energy accumulating state is provided with in upper plenum, the slide block that can move axially in this cavity is provided with in lower cavity, internal diameter and the external diameter of slide block are provided with Sealing, valve seat coordinates with spheroid and forms potted line, vertical ladder surface I and the area sum of vertical ladder surface II are greater than the area being in the vertical plane I outside potted line of valve seat left end, vertical ladder surface II and the area sum of the vertical plane II of valve seat right-hand member are greater than the area being in the sealing surface within potted line of described valve seat left end.The beneficial effects of the utility model are: can realize two way sealed, and have automatic compensation function, ensure the sealing of valve.
Description
Art
The utility model relates to a kind of sealing configuration, particularly relates to a kind of floating valve seat structure of eccentric half-ball valve.
Background technique
Be currently used in the eccentric half-ball valve of nuclear power, oil, Gas Industry, be all fixing spheroid, fixed valve base, can only one-way sealing be realized, the requirement of two way sealed cannot be realized, and can not auto-compensation after sealing surface wear.
Model utility content
In order to overcome the above-mentioned shortcoming of existing sealing configuration, the utility model provides a kind of floating valve seat structure realizing two way sealed.
The utility model solves the technological scheme that its technical problem adopts, a kind of floating valve seat structure of two way sealed eccentric half-ball valve, comprise valve seat and the back-up ring for carrying out axial limiting to valve seat, valve seat and valve body fitting surface are ladder surface, be respectively vertical ladder surface I, contour bench tread I, vertical ladder surface II, contour bench tread II, vertical ladder surface I, upper plenum is formed between contour bench tread I and valve body, vertical ladder surface II, lower cavity is formed between contour bench tread II and valve body, the spring being in energy accumulating state is provided with in upper plenum, the slide block that can move axially in this cavity is provided with in lower cavity, internal diameter and the external diameter of slide block are provided with Sealing, valve seat coordinates with spheroid and forms potted line, vertical ladder surface I and the area sum of vertical ladder surface II are greater than the area being in the vertical plane I outside potted line of valve seat left end, vertical ladder surface II and the area sum of the vertical plane II of valve seat right-hand member are greater than the area being in the sealing surface within potted line of described valve seat left end.
The beneficial effects of the utility model are:
1) slide block that can move axially in this cavity is provided with under in cavity, during forward sealing, the vertical plane I of medium to valve seat left end produces thrust to the right, and certain media infiltrates in upper plenum and lower cavity, to valve seat generation thrust left, because vertical ladder surface I and the area sum of vertical ladder surface II are greater than the area being in the vertical plane I outside potted line of valve seat left end, therefore thrust is left greater than thrust to the right, realizes forward sealing; During reverse sealing, the vertical plane II of medium to valve seat left end produces thrust left, and certain media infiltrates in lower cavity, to slide block generation thrust left, and then to valve seat generation thrust left, and the sealing surface that be in potted line within of medium to valve seat left end on valve seat and spheroid surface of contact produces thrust to the right, because vertical ladder surface II and the area sum of the vertical plane II of valve seat right-hand member are greater than the area being in the sealing surface within potted line of described valve seat left end, therefore reverse sealing can be realized.
2) when producing wearing and tearing in the process of valve seat left end sealing surface at Long-Time Service, valve seat can realize auto-compensation, ensures the sealing of valve.
Accompanying drawing explanation
Structural representation when Fig. 1 is the forward sealing of embodiment;
Structural representation when Fig. 2 is the reverse sealing of embodiment.
In figure: 1. valve body; 2. spring; 3. vertical ladder surface I; 4. contour bench tread I; 5. Sealing; 6. slide block; 7. vertical ladder surface II; 8. contour bench tread II; 9. vertical plane II; 10. back-up ring; 11 vertical planes I; 12. sealing surfaces; 13. valve seats; 14. spheroids; 15. upper plenums; 16. times cavitys.
Embodiment
As Fig. 1, shown in 2, a kind of floating valve seat structure of two way sealed eccentric half-ball valve, comprise valve seat 13 and the back-up ring 10 for carrying out axial limiting to valve seat 13, valve seat 13 and valve body 1 fitting surface are ladder surface, be respectively vertical ladder surface I 3, contour bench tread I 4, vertical ladder surface II 7, contour bench tread II 8, vertical ladder surface I 3, upper plenum 15 is formed between contour bench tread I 4 and valve body 1, vertical ladder surface II 8, lower cavity 16 is formed between contour bench tread II 9 and valve body 1, bullet 2 spring being in energy accumulating state is provided with in upper plenum 15, the slide block 6 that can move axially in this cavity is provided with in lower cavity 16, the internal diameter of slide block 6 and external diameter are provided with Sealing 5, valve seat 13 coordinates with spheroid 14 and forms potted line, vertical ladder surface I 3 and the area sum of vertical ladder surface II 7 are greater than the area being in the vertical plane I 11 outside potted line of valve seat 13 left end, vertical ladder surface II 7 and the area sum of the vertical plane II 9 of valve seat right-hand member are greater than the area being in the sealing surface 12 within potted line of described valve seat left end.
As shown in Figure 1, during forward sealing, medium produces thrust to the right to the vertical plane I 11 of valve seat 13 left end, and certain media infiltrates in upper plenum 15 and lower cavity 16, thrust is left produced to valve seat 13, because vertical ladder surface I 3 and the area sum of vertical ladder surface II 7 are greater than the area being in the vertical plane I 11 outside potted line of valve seat left end, therefore thrust is left greater than thrust to the right, realizes forward sealing.
As shown in Figure 2, during reverse sealing, medium produces thrust left to the vertical plane II 9 of valve seat left end, and certain media infiltrates in lower cavity 16, thrust is left produced to slide block 6, and then thrust is left produced to valve seat 13, and valve seat 13 and the sealing surface 12 that be in potted line within of medium to valve seat left end on spheroid 14 surface of contact produce thrust to the right, because vertical ladder surface II 7 and the area sum of the vertical plane II 9 of valve seat right-hand member are greater than the area being in the sealing surface 12 within potted line of described valve seat left end, therefore reverse sealing can be realized.
Claims (1)
1. the floating valve seat structure of a two way sealed eccentric half-ball valve, comprise valve seat and the back-up ring for carrying out axial limiting to valve seat, it is characterized in that: described valve seat and valve body fitting surface are ladder surface, be respectively vertical ladder surface I, contour bench tread I, vertical ladder surface II, contour bench tread II, described vertical ladder surface I, upper plenum is formed between contour bench tread I and valve body, described vertical ladder surface II, lower cavity is formed between contour bench tread II and valve body, the spring being in energy accumulating state is provided with in upper plenum, the slide block that can move axially in this cavity is provided with in lower cavity, internal diameter and the external diameter of described slide block are provided with Sealing, described valve seat coordinates with spheroid and forms potted line, described vertical ladder surface I and the area sum of vertical ladder surface II are greater than the area being in the vertical plane I outside potted line of described valve seat left end, described vertical ladder surface II and the area sum of the vertical plane II of valve seat right-hand member are greater than the area being in the sealing surface within potted line of described valve seat left end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520386922.0U CN204704415U (en) | 2015-06-08 | 2015-06-08 | A kind of floating valve seat structure of two way sealed eccentric half-ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520386922.0U CN204704415U (en) | 2015-06-08 | 2015-06-08 | A kind of floating valve seat structure of two way sealed eccentric half-ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204704415U true CN204704415U (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520386922.0U Active CN204704415U (en) | 2015-06-08 | 2015-06-08 | A kind of floating valve seat structure of two way sealed eccentric half-ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204704415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321430A (en) * | 2021-12-31 | 2022-04-12 | 湖南泵阀制造有限公司 | Bidirectional hard sealing rotary ball valve |
-
2015
- 2015-06-08 CN CN201520386922.0U patent/CN204704415U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321430A (en) * | 2021-12-31 | 2022-04-12 | 湖南泵阀制造有限公司 | Bidirectional hard sealing rotary ball valve |
| CN114321430B (en) * | 2021-12-31 | 2024-03-12 | 湖南泵阀制造有限公司 | Bidirectional hard sealing rotary ball valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |