CN205504051U - Fixed ball valve moves and carries two valve holder structure of canned type - Google Patents
Fixed ball valve moves and carries two valve holder structure of canned type Download PDFInfo
- Publication number
- CN205504051U CN205504051U CN201620100301.6U CN201620100301U CN205504051U CN 205504051 U CN205504051 U CN 205504051U CN 201620100301 U CN201620100301 U CN 201620100301U CN 205504051 U CN205504051 U CN 205504051U
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- CN
- China
- Prior art keywords
- valve
- seat
- ball
- valve seat
- floating
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a fixed ball valve moves and carries two valve holder structure of canned type, interior step has been seted up in the valve body, be equipped with the elastic support body in the step in this, the front end of the elastic support body is equipped with the support ring, the front end of support ring is equipped with solid fixed valve seat, be equipped with the filler between solid fixed valve seat and support ring, front end at solid fixed valve seat is equipped with unsteady disk seat, gu the preceding terminal surface of fixed valve seat is interior concave spherical surface, the rear end face of unsteady disk seat is outer convex spherical, float and contact through the sphere of mutually supporting between disk seat and the solid fixed valve seat, the preceding terminal surface and the valve ball contact of unsteady disk seat. The utility model provides an unsteady disk seat can be followed the valve ball and made micro - beat, can compensate the positional deviation that certainly leads to when the valve moves among valve ball processing and the assembling process, ensures the sealing reliability of unsteady disk seat and valve ball, the valve ball is rotatory beat and then influence float disk seat and sealing between the fixed valve seat admittedly to appear by a wide margin because of following also to have avoided simultaneously unsteady disk seat.
Description
Technical field
This utility model relates to a kind of valve seat construction, and this utility model especially relates to a kind of fixing ball valve dynamic load closed type double-valve-seat structure.
Background technology
Ball valve is applied to the high temperature of industry, the high pressure operating modes such as power plant, iron and steel, oil refining, Coal Chemical Industry more and more widely.But, for floating ball valve, one-way sealing can only be realized owing to construction features determines it, therefore correct installation direction is used just to seem the most crucial, on the other hand, even if having employed correct installation direction, floating ball valve the most often occurs because by the case damaged from the buffer brake in downstream, even resulting in package unit scram when situation is serious.For these reasons, higher at some pressure and easily occur to use the fixing ball valve with bi-directional sealing capabilities under the special operation condition of buffer brake.
In current prior art, the valve seat of fixed ball valve sealing structure being applied to worst hot case generally uses graphite packing as the potted component between valve seat and valve body, by the support ring being arranged on the valve seat back side, graphite packing is compressed, butterfly spring or cylindrical spring are installed for providing elastic compensating at the back side of support ring.When valve ball rotates, dimensional tolerance owing to certainly existing causes valve ball to be easy to toward above, below or side generation trace beat, and now valve seat is owing to radially being fixed by graphite packing, move only along axis direction, cannot follow sphere beat together, cause sealing surface of seat the most concentric with sphere, ball face sealing originally becomes linear sealing or dot encapsulation, ultimately result in sealing surface wear, moment of torsion and substantially become big, even valve bite, be difficult to be operating normally.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that one seals reliable, flexible movements and long-life fixing ball valve dynamic load closed type double-valve-seat structure.
The technical scheme provided according to this utility model, described fixing ball valve dynamic load closed type double-valve-seat structure, including valve body, valve ball, floating valve seat, fixed valve base, filler, support ring and elastic support；Interior step is offered in valve body, it is provided with elastic support in this interior step, the front end of elastic support is provided with support ring, the front end of support ring is provided with fixed valve base, filler it is provided with between fixed valve base and support ring, it is provided with floating valve seat in the front end of fixed valve base, the front end face of fixed valve base is interior concave spherical surface, the rear end face of floating valve seat is outer convex spherical, between floating valve seat with fixed valve base, the sphere by cooperating contacts, the front end face of floating valve seat is interior concave spherical surface, floating valve seat is contacted with valve ball by interior concave spherical surface, it is provided with spacing seam on floating valve seat outside described outer convex spherical.
Compared with the prior art this utility model has the advantage that
1, valve ball can be followed due to floating valve seat and make trace beat, the dimensional tolerance produced can make up valve ball processing and assembling when valve event during, before making floating valve seat, sealing surface is the most concentric with valve ball, it is ensured that sealing is reliable, valve event is smooth and easy, alleviates sealing surface wear；
2, the floating valve seat back side is provided with spacing seam, it is to avoid floating valve seat significantly beat and then the sealing affecting between floating valve seat and fixed valve base occurs because following valve ball and rotating；
3, the sealing surface between floating valve seat and valve ball and fixed valve base is spherical so that even if floating valve seat follows valve ball makees the sealing reliability that trace beat also ensures that between floating valve seat and fixed valve base；
4, when valve is in Light Condition butterfly spring provide pretightning force valve component is pushed to valve ball, under high pressure by medium pressure itself provide seal must be than pressure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the enlarged drawing of part A in Fig. 1.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is described in further detail.
This fixing ball valve dynamic load closed type double-valve-seat structure, including valve body 1, valve ball 2, floating valve seat 3, fixed valve base 4, filler 5, support ring 6 and elastic support 7, is provided with valve ball 2 in valve casing；Interior step is offered in valve body 1, it is provided with elastic support 7 in this interior step, the front end of elastic support 7 is provided with support ring 6, the front end of support ring 6 is provided with fixed valve base 4, filler 5 it is provided with between fixed valve base 4 and support ring 6, it is provided with floating valve seat 3 in the front end of fixed valve base 4, the front end face of fixed valve base 4 is interior concave spherical surface 4a, the rear end face of floating valve seat 3 is outer convex spherical 3a, between floating valve seat 3 with fixed valve base 4, the sphere by cooperating contacts, the front end face of floating valve seat 3 is interior concave spherical surface 3c, described floating valve ball 3 is contacted with valve ball 2 by interior concave spherical surface 3c, it is provided with spacing seam 3b on floating valve seat outside described outer convex spherical 3a.
In this utility model, floating valve seat 3 is arranged between valve ball 2 and fixed valve base 4, the interior concave spherical surface 3c of floating valve seat 3 matches with valve ball 2, described fixed valve base 4 is arranged in valve body 1, the front end face of fixed valve base 4 is interior concave spherical surface 4a, the rear end face of floating valve seat 3 is outer convex spherical 3a, the front end face of fixed valve base 4 is matched by sphere with the rear end face of floating valve seat 3, described filler 5 is arranged between fixed valve base 4 and valve body 1, filler 5 is compressed formation and seals by described support ring 6, described elastic support 7 is arranged on support ring 6 back side, pretightning force is provided to valve component under valve Light Condition.
Operation principle of the present utility model is as follows:
Valve ball 2 can be followed due to floating valve seat 3 and make trace beat, the dimensional tolerance produced during valve ball 2 is processed and assembled can be made up when valve event, the front end face making floating valve seat 3 is the most concentric with valve ball 2, it is ensured that sealing is reliable, valve event is smooth and easy, alleviates sealing surface wear；The back side of floating valve seat 3 is provided with spacing seam 3b, it is to avoid significantly beat and then affect the sealing between floating valve seat 3 and fixed valve base 4 occurs because following valve ball 2 and rotating in floating valve seat 3；Sealing surface between floating valve seat 3 and valve ball 2 and fixed valve base 4 is spherical so that make trace beat also ensure that the sealing reliability between floating valve seat 3 and fixed valve base 4 even if floating valve seat 3 follows valve ball 2；When valve is in Light Condition, elastic support 7 provides pretightning force that valve component is pushed to valve ball 2, under high pressure by medium pressure itself provide seal must be than pressure.
Claims (4)
- null1. a fixing ball valve dynamic load closed type double-valve-seat structure，Including valve body (1)、Valve ball (2)、Floating valve seat (3)、Fixed valve base (4)、Filler (5)、Support ring (6) and elastic support (7)，It is characterized in that: in valve body (1), offer interior step，Elastic support (7) it is provided with in this interior step，The front end of elastic support (7) is provided with support ring (6)，The front end of support ring (6) is provided with fixed valve base (4)，Filler (5) it is provided with between fixed valve base (4) and support ring (6)，It is provided with floating valve seat (3) in the front end of fixed valve base (4)，The front end face of fixed valve base (4) is interior concave spherical surface (4a)，The rear end face of floating valve seat (3) is outer convex spherical (3a)，Between floating valve seat (3) with fixed valve base (4), the sphere by cooperating contacts，The front end face of floating valve seat (3) is interior concave spherical surface (3c)，Floating valve seat (3) is contacted with valve ball (2) by interior concave spherical surface (3c)，Outer convex spherical (3a) outside on described floating valve seat (3) is provided with spacing seam (3b).
- 2. fixing ball valve dynamic load closed type double-valve-seat structure as claimed in claim 1, is characterized in that: containing a fixed valve base (4) and a floating valve seat (3), described floating valve seat (3) is arranged between valve ball (2) and fixed valve base (4).
- 3. fixing ball valve dynamic load closed type double-valve-seat structure as claimed in claim 1, is characterized in that: the front end face of described floating valve seat (3) is interior concave spherical surface (3c), and rear end face is outer convex spherical (3a).
- 4. fixing ball valve dynamic load closed type double-valve-seat structure as claimed in claim 1, is characterized in that: the front end face of described fixed valve base (4) is interior concave spherical surface (4a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620100301.6U CN205504051U (en) | 2016-02-01 | 2016-02-01 | Fixed ball valve moves and carries two valve holder structure of canned type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620100301.6U CN205504051U (en) | 2016-02-01 | 2016-02-01 | Fixed ball valve moves and carries two valve holder structure of canned type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205504051U true CN205504051U (en) | 2016-08-24 |
Family
ID=56723883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620100301.6U Withdrawn - After Issue CN205504051U (en) | 2016-02-01 | 2016-02-01 | Fixed ball valve moves and carries two valve holder structure of canned type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205504051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526376A (en) * | 2016-02-01 | 2016-04-27 | 无锡智能自控工程股份有限公司 | Dynamic load sealing type two-valve-seat structure of fixed ball-valve |
| CN109882656A (en) * | 2019-04-08 | 2019-06-14 | 江苏神通阀门股份有限公司 | A kind of used at ultra-low temperature upper-mounting type ball valve valve seat construction |
-
2016
- 2016-02-01 CN CN201620100301.6U patent/CN205504051U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526376A (en) * | 2016-02-01 | 2016-04-27 | 无锡智能自控工程股份有限公司 | Dynamic load sealing type two-valve-seat structure of fixed ball-valve |
| CN105526376B (en) * | 2016-02-01 | 2018-02-06 | 无锡智能自控工程股份有限公司 | Fixing ball valve dynamic load closed type bivalve holder structure |
| CN109882656A (en) * | 2019-04-08 | 2019-06-14 | 江苏神通阀门股份有限公司 | A kind of used at ultra-low temperature upper-mounting type ball valve valve seat construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160824 Effective date of abandoning: 20180206 |
|
| AV01 | Patent right actively abandoned |