CN104089043B - A kind of valve seat construction of ball valve - Google Patents
A kind of valve seat construction of ball valve Download PDFInfo
- Publication number
- CN104089043B CN104089043B CN201410330033.2A CN201410330033A CN104089043B CN 104089043 B CN104089043 B CN 104089043B CN 201410330033 A CN201410330033 A CN 201410330033A CN 104089043 B CN104089043 B CN 104089043B
- Authority
- CN
- China
- Prior art keywords
- valve seat
- seat
- main valve
- auxiliary
- spheroid
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0626—Easy mounting or dismounting means
- F16K5/0636—Easy mounting or dismounting means the spherical plug being insertable from the top of the housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0673—Composite packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Lift Valve (AREA)
Abstract
A kind of valve seat construction of ball valve, comprise valve seat body, valve seat body is made up of main valve seat and auxiliary-seat, main valve seat is arranged on the side near spheroid, auxiliary-seat is arranged on the side near valve port, between the axial end of auxiliary-seat and valve body, elastic device is set, main valve seat abuts with auxiliary-seat, the surface of contact that main valve seat abuts against with auxiliary-seat is the cambered surface of an evagination, the surface of contact that auxiliary-seat abuts against with main valve seat is the cambered surface of an indent, arranges Sealing between the radial end face of main valve seat and described auxiliary-seat and valve body.The invention has the beneficial effects as follows: the surface of contact that main valve seat and auxiliary-seat abut against is cambered surface, main valve seat can rotate in cambered surface, when installing spheroid, main valve seat can be deflected, be convenient to the installation of spheroid, and can with spheroid automatic centering, under the action of the elastic means, main valve seat and spheroid fit tightly, and ensure that the zero leakage of valve.
Description
Art
The present invention relates to a kind of valve seat of ball valve, particularly a kind of valve seat construction for upper-mounting type ball valve.
Background technique
Both sides valve seat, when sphere installation, need outwards be removed a segment distance by upper-mounting type ball valve, after sphere installation puts in place, both sides valve seat reset, and with spheroid close contact, produce sealing effect.And what usually adopt in prior art is near valve seat place, two regulating rods are housed on valve body, regulating rod drives valve seat to move left and right, regulating rod can be built-in, also can be external, the regulating rod of external can cause valve to produce two leakage points, and built-in regulating rod can cause valve body structure to become large, cost of idleness, and regulating rod structure processed complex, assembling inconvenience.Another structure adopts built-in adjusting nut to drive moving left and right of valve seat, and this structure is perishable at screw thread place, easily get rusty, poor sealing performance.
Summary of the invention
In order to overcome the above-mentioned shortcoming of existing upper-mounting type ball valve, the invention provides a kind of assembling simple, easy to maintenance, and the upper-mounting type ball valve of zero leakage can be ensured.
The technical solution adopted for the present invention to solve the technical problems is, a kind of valve seat construction of ball valve, comprise valve seat body, valve seat body is made up of main valve seat and auxiliary-seat, main valve seat is arranged on the side near spheroid, auxiliary-seat is arranged on the side near valve port, between the axial end of auxiliary-seat and valve body, elastic device is set, main valve seat abuts with auxiliary-seat, the surface of contact that main valve seat abuts against with auxiliary-seat is the cambered surface of an evagination, the surface of contact that auxiliary-seat abuts against with main valve seat is the cambered surface of an indent, between the radial end face of main valve seat and described auxiliary-seat and valve body, Sealing is set.
The cambered surface of described evagination is a sphere, and the cambered surface of indent is a sphere.
The cambered surface of evagination is the parabola of an evagination, and the cambered surface of indent is the parabola of an indent.
The sealing surface of main valve seat and spheroid is soft seal face.
The sealing surface of main valve seat and spheroid is hard sealing surface.
The sealing surface of main valve seat and spheroid is soft or hard compound seal surface.
The invention has the beneficial effects as follows: valve seat body is made up of main valve seat and auxiliary-seat, main valve seat abuts with auxiliary-seat, the surface of contact that main valve seat and auxiliary-seat abut against is cambered surface, main valve seat can rotate in cambered surface, when installing spheroid, main valve seat can be deflected, the entrance in valve seat is installed to enlarged ball, be convenient to the installation of spheroid, in the process that sphere installation puts in place, main valve seat continues to rotate, final and spheroid automatic centering, under the action of the elastic means, main valve seat and spheroid fit tightly, and ensure that the zero leakage of valve.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of embodiment;
In figure: 1. valve seat body; 2. spheroid; 3. valve port; 4. valve body; 5. the cambered surface of evagination; 6. the cambered surface of indent; 7. Sealing; 8. sealing surface; 9. elastic device; 101 main valve seats; 102. auxiliary-seat.
Embodiment
As shown in Figure 1, a kind of valve seat construction of ball valve, comprise valve seat body 1, valve seat body 1 is made up of main valve seat 101 and auxiliary-seat 102, and main valve seat 101 is arranged on the side near spheroid 2, and auxiliary-seat 102 is arranged on the side near valve port 3, between the axial end of auxiliary-seat 102 and valve body 4, elastic device 9 is set, elastic device 9 can be spring, can be disc spring, and the structure with elasticity pretension function can be elastic device 9; Main valve seat 101 abuts with auxiliary-seat 102, the surface of contact that main valve seat 101 abuts against with auxiliary-seat 102 is the cambered surface 5 of an evagination, the cambered surface 5 of this evagination can be sphere, also can be parabola face, the surface of contact that auxiliary-seat 102 abuts against with main valve seat is the cambered surface 6 of an indent, the cambered surface 6 of this indent can be sphere, also can be parabola, but, the cambered surface angle that cambered surface 5 and the cambered surface 6 of indent of evagination contact with each other must be more than or equal to 180 degree, to ensure the automatic centering of main valve seat 101; Between the radial end face of main valve seat 101 and described auxiliary-seat 102 and valve body 3, Sealing 7 is set; Main valve seat 101 can be soft seal face with the sealing surface 8 of spheroid 2, and can be hard sealing surface, also can be soft or hard compound seal surface.
When spheroid 2 is installed, first main valve seat 101 is deflected, the entrance in valve seat is installed to enlarged ball 2, be convenient to the installation of spheroid 2, in the process that spheroid 2 is in place, main valve seat 101 continues to rotate, final and spheroid 2 automatic centering, under the effect of elastic device 9, main valve seat 101 and spheroid 2 fit tightly, and ensure that the zero leakage of valve.
Claims (6)
1. the valve seat construction of a ball valve, comprise valve seat body, it is characterized in that: described valve seat body is made up of main valve seat and auxiliary-seat, described main valve seat is arranged on the side near spheroid, described auxiliary-seat is arranged on the side near valve port, between the axial end of described auxiliary-seat and valve body, elastic device is set, described main valve seat abuts with described auxiliary-seat, the surface of contact that described main valve seat abuts against with described auxiliary-seat is the cambered surface of an evagination, the surface of contact that described auxiliary-seat abuts against with described main valve seat is the cambered surface of an indent, between the radial end face of described main valve seat and described auxiliary-seat and valve body, Sealing is set.
2. the valve seat construction of a kind of ball valve as claimed in claim 1, is characterized in that: the cambered surface of described evagination is a sphere, and the cambered surface of described indent is a sphere.
3. the valve seat construction of a kind of ball valve as claimed in claim 1, is characterized in that: the cambered surface of described evagination is the parabola of an evagination, and the cambered surface of described indent is the parabola of an indent.
4. the valve seat construction of a kind of ball valve as claimed in claim 1, is characterized in that: the sealing surface of described main valve seat and spheroid is soft seal face.
5. the valve seat construction of a kind of ball valve as claimed in claim 1, is characterized in that: the sealing surface of described main valve seat and spheroid is hard sealing surface.
6. the valve seat construction of a kind of ball valve as claimed in claim 1, is characterized in that: the sealing surface of described main valve seat and spheroid is soft or hard compound seal surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330033.2A CN104089043B (en) | 2014-07-12 | 2014-07-12 | A kind of valve seat construction of ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330033.2A CN104089043B (en) | 2014-07-12 | 2014-07-12 | A kind of valve seat construction of ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104089043A CN104089043A (en) | 2014-10-08 |
| CN104089043B true CN104089043B (en) | 2016-03-23 |
Family
ID=51636785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410330033.2A Active CN104089043B (en) | 2014-07-12 | 2014-07-12 | A kind of valve seat construction of ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104089043B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3567178A (en) * | 1969-09-29 | 1971-03-02 | Acf Ind Inc | Valve stem packing and bearing assembly |
| CN202629148U (en) * | 2012-07-02 | 2012-12-26 | 苏州道森阀门有限公司 | Self-regulating valve seat type top entry ball valve |
| CN203348608U (en) * | 2013-07-01 | 2013-12-18 | 浙江华夏阀门有限公司 | Flange connection upper mounting type ball valve |
| CN204004535U (en) * | 2014-07-12 | 2014-12-10 | 江苏神通阀门股份有限公司 | A kind of valve seat construction of ball valve |
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2014
- 2014-07-12 CN CN201410330033.2A patent/CN104089043B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104089043A (en) | 2014-10-08 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |