CN204061982U - The sealing configuration of hard seal ball valve seat - Google Patents
The sealing configuration of hard seal ball valve seat Download PDFInfo
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- CN204061982U CN204061982U CN201420522297.3U CN201420522297U CN204061982U CN 204061982 U CN204061982 U CN 204061982U CN 201420522297 U CN201420522297 U CN 201420522297U CN 204061982 U CN204061982 U CN 204061982U
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Abstract
The utility model relates to a kind of sealing configuration of hard seal ball valve seat, comprise valve seat and the valve ball of ball valve, the sealing surface that valve seat contacts with valve ball cambered surface is interior concave circular arc, the interior concave circular arc of described sealing surface of seat is provided with the annular groove of multiple opening towards valve ball, sealing surface of seat is divided into several disjunct seal section by these annular grooves, the cross section of described annular groove is V-arrangement right angle groove, one cell wall of described V-arrangement right angle groove and valve seat axis parallel, another cell wall is vertical with valve seat shaft axis, and the corner of each V-arrangement right angle groove notch is formed scrapes dirty sword.The utility model reduces the driving torque of ball valve, prevents dirty layer from affecting sealing effect, extends the working life of ball valve.
Description
Technical field
The utility model relates to valve field, particularly a kind of sealing configuration of hard seal ball valve seat.
Background technique
Sealing surface between the valve seat of current hard seal ball valve and valve ball is confined to that inclined-plane seals, dot encapsulation and cambered surface seal, and the sealing configuration of this three types has following defect respectively:
Inclined-plane seals: a kind of seal form being the more employing of ball valve, the inclined-plane of ball seat is perpendicular to the arc surface of valve ball, a sealing lines on valve seat inclined-plane contacts with valve ball arc surface and seals, inclined plane sealing structure is linear sealing, and sealing effect is better, but there is angle between valve seat inclined-plane and valve ball arc surface, valve ball is in rotation process, angle is slag input very easily, causes linear sealing not tight, shortens the working life of ball valve.
Dot encapsulation: the seal point of ball seat contacts with valve ball, form dot encapsulation, but the valve seat of this type of sealing configuration and valve ball are point cantact, sealing area is too little, and when using in hyperbaric environment, seal point is very easily washed, and working life is shorter.
Cambered surface seals: the sealing surface of ball seat is set to the cambered surface corresponding with valve ball arc surface, it is generally acknowledged good a kind of sealing configuration, its sealing effect is better, but this type of sealing configuration, because sealing surface of seat contacts long-pending excessive with valve ball cambered surface, valve ball is in rotation process, and moment of torsion is larger, rotate comparatively difficulty, inconvenience uses; This type of cambered surface sealing configuration only has a sealing surface simultaneously, once sealing surface is impaired, just cannot ensure the sealing effect of ball valve, reduce the working life of ball valve.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provides a kind of sealing configuration of hard seal ball valve seat, reduces the driving torque of ball valve, prevents dirty layer from affecting sealing effect, extends the working life of ball valve.
The technical solution of the utility model is: a kind of sealing configuration of hard seal ball valve seat, comprise valve seat and the valve ball of ball valve, the sealing surface that valve seat contacts with valve ball cambered surface is interior concave circular arc, the interior concave circular arc of described sealing surface of seat is provided with the annular groove of multiple opening towards valve ball, sealing surface of seat is divided into several disjunct seal section by these annular grooves, the cross section of described annular groove is V-arrangement right angle groove, one cell wall of described V-arrangement right angle groove and valve seat axis parallel, another cell wall is vertical with valve seat shaft axis, the corner of each V-arrangement right angle groove notch is formed scrapes dirty sword.
The cell wall that described V-arrangement right angle groove is parallel to valve seat shaft axis is high is 2 ~ 4 ㎜.
Described V-arrangement right angle groove perpendicular to the cell wall of valve seat shaft axis high be 2 ~ 4 ㎜.
The quantity of described V-arrangement right angle groove is at least two.
The axial end of described valve seat and the cross-shaped portion of adjacent seals section are formed scrapes dirty sword.
Adopt technique scheme: a kind of sealing configuration of hard seal ball valve seat, comprise valve seat and the valve ball of ball valve, the sealing surface that valve seat contacts with valve ball cambered surface is interior concave circular arc, the sealing surface of valve seat contacts with valve ball cambered surface and forms cambered surface and seal, and has the good advantage of cambered surface sealing class ball valve sealing effect.The interior concave circular arc of described sealing surface of seat is provided with the annular groove of multiple opening towards valve ball, sealing surface of seat is divided into several disjunct seal section by these annular grooves, the cross section of described annular groove is V-arrangement right angle groove, these V-arrangement right angle grooves decrease the area of contact of ball seat and valve ball, reduce the moment of torsion of valve, ball valve is facilitated to use, sealing surface of seat is divided into several disjunct seal section, each seal section contacts with valve ball to be formed respectively and seals, even if there is seal section to damage, distortion, make sealing section and valve ball poorly sealed, remaining seal section also effectively can ensure the sealing that valve ball is good.One cell wall of described V-arrangement right angle groove and valve seat axis parallel, another cell wall is vertical with valve seat shaft axis, the corner of each V-arrangement right angle groove notch is formed scrapes dirty sword, the valve ball of ball valve is in rotation process, the dirty layer that in valve ball cambered surface, adhering medium is formed is scraped off by scraping dirty sword, avoid in the gap that dirty layer is transferred between cambered surface and seal section, prevent dielectric leakage, effectively extend the working life of valve ball.
The quantity of described V-arrangement right angle groove is at least two, at least two V-arrangement right angle grooves can ensure that the seal section quantity be separated out is at least three, when seal section quantity is three, the seal section being in two ends contacts with valve ball to be formed and seals, be positioned at middle seal section to contact with ball valve cambered surface, and not with medium contact, can working life of significant prolongation ball valve, and ensure that ball valve has good sealing effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of ball valve;
Fig. 2 is the structural representation of ball seat, valve ball;
Fig. 3 is P place enlarged view in Fig. 2;
Fig. 4 is the structural representation of ball seat;
Fig. 5 is the A direction view of Fig. 4;
Fig. 6 is ball valve closed condition lower valve base and valve ball location diagram;
Fig. 7 is valve ball opening state lower valve base and valve ball location diagram.
In accompanying drawing, 1 is valve seat, and 2 is valve ball, and 3 is sealing surface, and 4 is V-arrangement right angle groove, and 5 is seal section, and 6 for scraping dirty sword, and 7 is axial end.
Embodiment
See Fig. 1 to Fig. 5, a kind of sealing configuration of hard seal ball valve seat, comprise valve seat 1 and the valve ball 2 of ball valve, the body of valve seat 1 and valve ball 2 is all made with austenitic stainless steel material, for ensureing the hardness of valve seat 1 and valve ball 2, surfacing one deck cemented carbide on the sealing surface of valve seat 1, surfacing one deck cemented carbide in the cambered surface of valve ball 2.Sealing surface that valve seat 1 contacts with valve ball 2 cambered surface 3 is interior concave circular arc, and the sealing surface 3 of valve seat 1 forms the sealing surface of a ring-type, and the sealing surface of ring-type contacts with valve ball 2 cambered surface and forms cambered surface and seal.The interior concave circular arc of described valve seat 1 sealing surface 3 is provided with the annular groove of multiple opening towards valve ball 2, valve seat 1 sealing surface 3 is divided into several disjunct seal section 5 by these annular grooves, the present embodiment, the sealing surface of valve seat 1 is provided with two annular grooves, the cross section of described annular groove is V-arrangement right angle groove 4, from the axial end of valve seat, shaft axis to valve seat stops, be followed successively by the first V-arrangement right angle groove, second V-arrangement right angle groove, first, sealing surface of seat is divided into the first seal section by the second V-arrangement right angle groove, second seal section, 3rd seal section, first, second, 3rd seal section is ring-type, one cell wall of described V-arrangement right angle groove 4 and valve seat 1 axis parallel, another cell wall is vertical with valve seat 1 shaft axis, it is 2 ~ 4 ㎜ that V-arrangement right angle groove 4 is parallel to the cell wall of valve seat 1 shaft axis high, described V-arrangement right angle groove 4 perpendicular to the cell wall of valve seat 1 shaft axis high be 2 ~ 4 ㎜, the present embodiment, it is 3 ㎜ that V-arrangement right angle groove 4 is parallel to the cell wall of valve seat 1 shaft axis high, V-arrangement right angle groove 4 perpendicular to the cell wall of valve seat 1 shaft axis high be 3 ㎜.The corner of each V-arrangement right angle groove 4 notch is formed scrapes dirty sword 6, the axial end of described valve seat 1 and the cross-shaped portion of adjacent seals section 5 are formed scrapes dirty sword, namely, from the axial end of valve seat, shaft axis to valve seat stops, the axial end 7 of valve seat and the cross-shaped portion of the first seal section form first and scrape dirty sword, and two corners of the first V-arrangement right angle groove notch form second and scrape dirty sword, and two corners of the second V-arrangement right angle groove notch form the 3rd and scrape dirty sword.
See Fig. 6 and Fig. 7, for ensureing ball valve sealing effect and ball valve normal usage function, the inner concave arc surface external diameter R of valve seat 1 sealing surface 3 is less than or equal to the length L of valve ball 2 runner, and the inner concave arc surface internal diameter r of valve seat 1 sealing surface 3 is more than or equal to the diameter D of valve ball 2 runner.
During use, the cambered surface of valve ball contacts with first, second, third seal section respectively and forms annular cambered surface and seal, even if wherein seal section distortion, damage and lose sealing effect, remaining seal section also can ensure the sealing that ball valve is good.Because the first, the 3rd seal section plays seal action, make the second seal section not with medium contact, significant prolongation working life of ball valve.After the long-time adhering medium of valve ball cambered surface forms dirty layer, when valve ball rotates, first, second, third scrapes dirty sword scrapes off dirty layer in valve ball cambered surface, in the gap avoiding dirty layer to enter between seal section and valve ball cambered surface, ensure that the sealing that ball valve is good, reduce the driving torque of ball valve simultaneously, easy to use.
Claims (5)
1. the sealing configuration of a hard seal ball valve seat, comprise valve seat (1) and the valve ball (2) of ball valve, the sealing surface (3) that valve seat (1) contacts with valve ball (2) cambered surface is interior concave circular arc, it is characterized in that: the interior concave circular arc of described valve seat (1) sealing surface (3) is provided with the annular groove of multiple opening towards valve ball (2), valve seat (1) sealing surface (3) is divided into several disjunct seal section (5) by these annular grooves, the cross section of described annular groove is V-arrangement right angle groove (4), one cell wall of described V-arrangement right angle groove (4) and valve seat (1) axis parallel, another cell wall is vertical with valve seat (1) shaft axis, the corner of each V-arrangement right angle groove (4) notch is formed scrapes dirty sword (6).
2. the sealing configuration of hard seal ball valve seat according to claim 1, is characterized in that: the cell wall that described V-arrangement right angle groove (4) is parallel to valve seat (1) shaft axis is high is 2 ~ 4 ㎜.
3. the sealing configuration of hard seal ball valve seat according to claim 1, is characterized in that: described V-arrangement right angle groove (4) perpendicular to the cell wall of valve seat (1) shaft axis high be 2 ~ 4 ㎜.
4. the sealing configuration of hard seal ball valve seat according to claim 1, is characterized in that: the quantity of described V-arrangement right angle groove (4) is at least two.
5. the sealing configuration of hard seal ball valve seat according to claim 1, is characterized in that: the axial end of described valve seat (1) and the cross-shaped portion of adjacent seals section (5) are formed scrapes dirty sword (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522297.3U CN204061982U (en) | 2014-09-12 | 2014-09-12 | The sealing configuration of hard seal ball valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522297.3U CN204061982U (en) | 2014-09-12 | 2014-09-12 | The sealing configuration of hard seal ball valve seat |
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| CN204061982U true CN204061982U (en) | 2014-12-31 |
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| CN201420522297.3U Active CN204061982U (en) | 2014-09-12 | 2014-09-12 | The sealing configuration of hard seal ball valve seat |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626892A (en) * | 2016-03-28 | 2016-06-01 | 福建上润精密仪器有限公司 | Valve seat structure of floating ball 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 |
| CN106678386A (en) * | 2015-11-10 | 2017-05-17 | 王姝 | Partitioned cavity valve |
| CN107143661A (en) * | 2017-06-17 | 2017-09-08 | 俞钟晓 | A kind of gate valve connected with sea |
| CN110388480A (en) * | 2019-06-03 | 2019-10-29 | 欧电阀门有限公司 | Eccentric half-ball valve |
| CN112283383A (en) * | 2020-10-20 | 2021-01-29 | 吴忠仪表有限责任公司 | Rotary ball core descaling mechanism |
-
2014
- 2014-09-12 CN CN201420522297.3U patent/CN204061982U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678386A (en) * | 2015-11-10 | 2017-05-17 | 王姝 | Partitioned cavity valve |
| CN105626892A (en) * | 2016-03-28 | 2016-06-01 | 福建上润精密仪器有限公司 | Valve seat structure of floating ball 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 |
| CN107143661A (en) * | 2017-06-17 | 2017-09-08 | 俞钟晓 | A kind of gate valve connected with sea |
| CN110388480A (en) * | 2019-06-03 | 2019-10-29 | 欧电阀门有限公司 | Eccentric half-ball valve |
| CN112283383A (en) * | 2020-10-20 | 2021-01-29 | 吴忠仪表有限责任公司 | Rotary ball core descaling mechanism |
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