CN201779300U - Combined ball valve sealing device - Google Patents
Combined ball valve sealing device Download PDFInfo
- Publication number
- CN201779300U CN201779300U CN2010205353562U CN201020535356U CN201779300U CN 201779300 U CN201779300 U CN 201779300U CN 2010205353562 U CN2010205353562 U CN 2010205353562U CN 201020535356 U CN201020535356 U CN 201020535356U CN 201779300 U CN201779300 U CN 201779300U
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- Prior art keywords
- valve seat
- pair
- sealing
- spheroid
- seal
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- Expired - Lifetime
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Abstract
The utility model relates to a combined ball valve sealing device which comprises a valve body, a valve seat and a ball body, a combined sealing pair is mainly arranged between the valve seat and the ball body, and the combined sealing pair consists of a main sealing pair and associate sealing pairs. The main sealing pair is formed by mutually matching a triangular rubber sealing ring which is embedded in a valve seat mounting groove with the surface of the ball body, the triangular rubber sealing ring is press-mounted in the valve seat mounting groove by a snap spring compression mechanism, and one vertex angle of the triangular rubber sealing ring is in hermetical contact with the surface of the ball body; and each associate sealing pair is formed by mutually matching a slope which is manufactured on the surface of the valve seat and gradually approaches the surface of the ball body with the surface of the ball body, the number of the associate sealing pairs is two, and the associate sealing pairs are respectively arranged on two sides of the main sealing pair. The main sealing pair can be mounted firmly, be difficult to come off due to medium erosion, be small in abrasion, be good in sealing performance and be particularly applicable to natural gas pipelines.
Description
Technical field
The utility model relates to a kind of valve, specifically about a kind of sealing pair structure of ball valve.
Background technique
The sealing pair structure of ball valve is divided into hard sealing structure and soft sealing structure, hard sealing structure has characteristics such as high temperature resistant, wear-resistant, be suitable for worst hot case, soft sealing structure has the characteristics of good seal performance, is applicable to low temperature such as natural gas line, the operating mode that seal request is high.The sealing pair of existing soft sealing ball valve generally comprises valve seat and spheroid, and valve seat floats and is installed on the valve body, and spheroid is a metallic sealing section, the soft seal circle that plastics that setting-in one and spheroid metallic sealing section cooperatively interact on the valve seat or rubber are formed.Its major defect is: the soft seal circle is easy to wear when the medium operating mode of band particle is used, and is washed away by medium easily and come off.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, and a kind of valve seat insert fixation, not easy to wear is provided, and sealability is reliable, the combined type ball valve sealing device of long service life.
The technical solution of the utility model comprises valve body, valve seat, spheroid, and valve seat adopts floating structure on valve body, and valve seat and spherome surface adopt cure process.Mainly be to be provided with the combination seal pair between valve seat and the spheroid, this combination seal pair is made up of primary seal pair and accurate sealing pair.Described primary seal pair cooperatively interacts and forms by being inlaid in triangle rubber seal in the valve seat mounting groove and spherome surface, and the triangle rubber seal is fitted in the valve seat mounting groove by the jump ring hold-down mechanism, and an one drift angle contacts with the spherome surface sealing; Described accurate sealing pair is the inclined-plane of making convergence spherome surface gradually at valve base surface and the spherome surface composition that cooperatively interacts, and accurate sealing pair has two, is separately positioned on primary seal pair both sides.
In above technological scheme, between valve seat and spheroid, also be provided with the plug-in type seal ring.
The utility model has the advantages that between valve seat and the spheroid and adopt combined sealing structure, the secondary triangle rubber seal that adopts of its primary seal is fitted in by the jump ring hold-down mechanism in the vee gutter of valve seat, and it is installed and firmly, is not subject to medium and washes away and come off; The accurate sealing pair that the secondary left and right sides of primary seal is provided with is a shape metallic leak-proof structure, can prevent that particle from entering the primary seal district, reduces the wearing and tearing of diabolo rubber seal, improves sealability.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Combined type ball valve sealing device as shown in Figure 1, comprise valve body 10, valve seat 1, spheroid 11, valve seat 1 adopts floating structure on valve body 10, described floating structure is between valve body 10 and valve seat 1 floating spring 4 to be set, make valve body 10 and the valve seat 1 can be relative unsteady, valve seat 1 adopts cure process with spheroid 11 surfaces.Be provided with the combination seal pair between valve seat 1 and the spheroid 11, this combination seal pair is made up of primary seal pair and accurate sealing pair.
Described primary seal pair cooperatively interacts with spheroid 11 surfaces and forms by being inlaid in triangle rubber seal 2 in valve seat 1 mounting groove, triangle rubber seal 2 is fitted in valve seat 1 mounting groove by jump ring hold-down mechanism 9, valve seat 1 mounting groove is a triangular structure, make triangle rubber seal 2 that difficult drop-off is installed firmly.Triangle rubber seal 2 adopts hard rubber material, has higher consistency and elasticity, and an one drift angle contacts with spheroid 11 face seals, is the linear sealing structure.
Described accurate sealing pair is the inclined-plane of making convergence spheroid 11 surfaces gradually on valve seat 1 surface and the spheroid 11 surfaces composition that cooperatively interacts, accurate sealing pair has two, be separately positioned on the secondary both sides of primary seal, prevent that bigger particle from entering the primary seal district primary seal by-product is given birth to wearing and tearing.
Between valve seat 1 and spheroid 11, also be provided with plug-in type seal ring 3, in the high-pressure large-caliber valve, to improve the operational safety of primary seal pair.Simultaneously, on the valve seat 1 between plug-in type seal ring 3 and the primary seal pair, valve body 10, be provided with the greasing hole, between the valve seat 1 of these both sides, greasing hole and valve body 10, be respectively equipped with left O-ring seals 8 and right O-ring seals 6 and fire proof seal circle 5.Be provided with back-up ring 7 between right O-ring seals 6 and valve seat 1 and the valve body 10, improve the floatability of valve seat 1.
Claims (2)
1. combined type ball valve sealing device, comprise valve body (10), valve seat (1), spheroid (11), valve seat (1) is gone up at valve body (10) and is adopted floating structure, valve seat (1) adopts cure process with spheroid (11) surface, it is characterized in that being provided with the combination seal pair between valve seat (1) and the spheroid (11), this combination seal pair is made up of primary seal pair and accurate sealing pair; Described primary seal pair cooperatively interacts with spheroid (11) surface and forms by being inlaid in triangle rubber seal (2) in valve seat (1) mounting groove, triangle rubber seal (2) is fitted in valve seat (1) mounting groove by jump ring hold-down mechanism (9), and an one drift angle contacts with spheroid (11) face seal; Described accurate sealing pair is the inclined-plane of making convergence spheroid (11) surface gradually on valve seat (1) surface and spheroid (11) the surface composition that cooperatively interacts, and accurate sealing pair has two, is separately positioned on primary seal pair both sides.
2. combined type ball valve sealing device according to claim 1 also is provided with plug-in type seal ring (3) between valve seat (1) and spheroid (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205353562U CN201779300U (en) | 2010-09-20 | 2010-09-20 | Combined ball valve sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205353562U CN201779300U (en) | 2010-09-20 | 2010-09-20 | Combined ball valve sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201779300U true CN201779300U (en) | 2011-03-30 |
Family
ID=43792511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205353562U Expired - Lifetime CN201779300U (en) | 2010-09-20 | 2010-09-20 | Combined ball valve sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201779300U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392902A (en) * | 2011-07-12 | 2012-03-28 | 天津祥嘉流体控制系统有限公司 | Top-mounted ball valve |
| CN102734488A (en) * | 2012-07-09 | 2012-10-17 | 张业宝 | Ball valve base |
| CN102758933A (en) * | 2012-07-18 | 2012-10-31 | 嘉士凯（苏州）阀门配件有限公司 | Ball valve for high temperature and high pressure |
| CN102758932A (en) * | 2012-07-18 | 2012-10-31 | 嘉士凯（苏州）阀门配件有限公司 | High-temperature-resistant ball valve |
| CN103398189A (en) * | 2013-08-13 | 2013-11-20 | 天津诺威流体控制科技有限公司 | Subsea valve |
| CN105805341A (en) * | 2016-05-30 | 2016-07-27 | 乌鲁木齐市闽之宇阀业有限公司 | Dual-material multi-protection sealing mechanism of ball valve |
| WO2021042901A1 (en) * | 2019-09-02 | 2021-03-11 | 苏州纽威阀门股份有限公司 | Valve seat assembly and ball valve having same |
-
2010
- 2010-09-20 CN CN2010205353562U patent/CN201779300U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392902A (en) * | 2011-07-12 | 2012-03-28 | 天津祥嘉流体控制系统有限公司 | Top-mounted ball valve |
| CN102392902B (en) * | 2011-07-12 | 2013-02-27 | 天津祥嘉流体控制系统有限公司 | Top-mounted ball valve |
| CN102734488A (en) * | 2012-07-09 | 2012-10-17 | 张业宝 | Ball valve base |
| CN102758933A (en) * | 2012-07-18 | 2012-10-31 | 嘉士凯（苏州）阀门配件有限公司 | Ball valve for high temperature and high pressure |
| CN102758932A (en) * | 2012-07-18 | 2012-10-31 | 嘉士凯（苏州）阀门配件有限公司 | High-temperature-resistant ball valve |
| CN103398189A (en) * | 2013-08-13 | 2013-11-20 | 天津诺威流体控制科技有限公司 | Subsea valve |
| CN105805341A (en) * | 2016-05-30 | 2016-07-27 | 乌鲁木齐市闽之宇阀业有限公司 | Dual-material multi-protection sealing mechanism of ball valve |
| CN105805341B (en) * | 2016-05-30 | 2019-04-26 | 乌鲁木齐市闽之宇阀业有限公司 | The double material multiple protective sealing mechanisms of ball valve |
| WO2021042901A1 (en) * | 2019-09-02 | 2021-03-11 | 苏州纽威阀门股份有限公司 | Valve seat assembly and ball valve having same |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |