CN108167467A - A kind of two way seal ball valve - Google Patents
A kind of two way seal ball valve Download PDFInfo
- Publication number
- CN108167467A CN108167467A CN201810144242.6A CN201810144242A CN108167467A CN 108167467 A CN108167467 A CN 108167467A CN 201810144242 A CN201810144242 A CN 201810144242A CN 108167467 A CN108167467 A CN 108167467A
- Authority
- CN
- China
- Prior art keywords
- valve
- ball
- valve ball
- transmission shaft
- valve seat
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007667 floating Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
-
- 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
-
- 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)
Abstract
The invention belongs to control valve for fluids technical fields, more particularly to a kind of two way seal ball valve, including valve body, valve seat, valve ball, transmission shaft and upper cover, the upper cover is fixed on the top of valve body, the valve ball is mounted in valve body, transmission shaft one end is connected with valve ball, and the inlet end and an outlet end of the valve body is equipped with symmetrical valve seat, the valve seat centered on valve ball and the position sealed with valve ball is compacted to using trim ring；The valve ball includes two eccentric semi-sphericals, and the runner hole of the valve seat is eccentric orfice, and the eccentric semi-spherical of the same side is equal with the eccentricity in runner hole, and eccentric direction is identical.Sealing effect of the present invention is good, and under identical negotiability, torque is small；Meanwhile valve ball and the sealing surface of seat degree of wear are alleviated, the stuck risk of valve ball is avoided, effectively extends valve service life.
Description
Technical field
The present invention relates to a kind of two way seal ball valves, are that one kind forms valve ball, valve seat by two eccentric semi-sphericals specifically
The floating type straight-through valve of eccentric orfice is provided with, belongs to control valve for fluids technical field.
Background technology
Floating type straight-through valve is with negotiability is good, torque is small, rapid operation, simple in structure, easy to maintenance and cost
The advantages that cheap, is widely used in the cut-out control of the industrial feed-line such as petrochemical industry, papermaking, metallurgy, food.Floating type straight-through ball
When valve is closed, Fluid pressure pushes valve ball to be pressed to port of export valve seat, realizes one-way sealing, and such port of export valve seat is just born
Whole flows to pressure, it is contemplated that the influence of valve ball dead weight, the pressure that valve seat is born is uneven distribution, i.e., along runner level
Half-turn load is smaller on face, and lower branch load is larger, as Fluid pressure and valve ball size increase, the unevenness of valve seat pressure
Even property can be more serious, leads to valve seat irregular wear and generates interior leakage, thus floating type straight-through valve be generally used for 300Lb and
Working condition below 8 ".On the other hand, if Fluid pressure is not enough to that valve ball or pressure is pushed to there is fluctuation, valve ball is just difficult
To keep compressing sealing state with port of export valve seat, at this moment need to apply pretightning force between valve ball and valve seat, industry is general at present
It is to arrange disk spring or cylindrical spring at the input end valve seat back side all over the way used, becoming input end valve seat can be adjusted
The elastic seat for the range that exerts a force, so as to improve the reliability of sealing.But initial tension of spring deficiency cannot ensure to seal, and
Excessive pretightning force can increase moment of friction again, valve seat be caused to overload deformation failure, while the impurity in fluid is also easily overstock
To valve seat back side spring eye or valve seat in valve body gap, valve seat being made to lose controllability, valve ball and valve seat can be caused when serious
It is stuck.
Invention content
It is an object of the invention to overcome the problems, such as that above-mentioned floating type straight-through valve exists, a kind of two way seal ball valve is provided
Structure, the sealing structure effect is good, and under identical negotiability, torque is small.In addition, the structure alleviates valve ball and valve seat is close
The cover degree of wear avoids the stuck risk of valve ball, effectively extends valve service life.
According to technical solution provided by the invention, the two way seal ball valve, including valve body, valve seat, valve ball, transmission shaft and
Upper cover, the upper cover are fixed on the top of valve body, and the valve ball is mounted in valve body, and transmission shaft one end is connected with valve ball, described
The inlet end and an outlet end of valve body is equipped with symmetrical valve seat, valve seat centered on valve ball and is compacted to what is sealed with valve ball using trim ring
Position；The valve ball includes two eccentric semi-sphericals, and the runner hole of the valve seat is eccentric orfice, eccentric semi-spherical and the bias in runner hole
Away from equal, eccentric direction is identical.
Further, be equipped with filler assembly and bearing in the upper cover, transmission shaft pass through upper cover, filler assembly and bearing with
Valve ball is connected.
Further, the valve body is top assembling structure, and left and right flange is arranged symmetrically, and the axis of transmission shaft is located at pair of valve body
Claim on median plane；The centre of gyration line of valve ball and the axis collinear of transmission shaft.
Further, centre of gyration line symmetrical arranged off-centre of the two eccentric semi-spherical centre ofs sphere of the valve ball along valve ball.
Further, seal groove is provided on the side wall of the valve seat, sealing ring is equipped in seal groove.
Further, the transmission shaft is equipped with baffle ring, and baffle ring is between filler assembly and bearing.
Further, the side wall of the valve seat is equipped with step, and adjusting pad is equipped between step high spot and valve body.
Compared with the prior art the present invention, has the following advantages：
1st, since valve ball and valve seat have eccentric structure, valve forms sealing pair when closing, and 180 ° of valve seat is installed on before and after valve ball,
Realize both sides valve seat seal simultaneously, when pressure is smaller or unstable, valve ball and sealing surface of seat will not be detached from, pressure compared with
Sealing surface excessive wear caused by being avoided that one-way sealing again when big；
2nd, since valve ball and valve seat have an eccentric structure, when valve opening, only needs smaller torque with regard to valve ball can be made to be detached from valve seat,
Fluid pressure pushes valve ball to be rotated to opening direction at this time, realizes the rapid labour-saving action of valve；
3rd, since valve ball and valve seat have eccentric structure, when valve is closed, eccentric valve ball can scrape off the product being attached on valve seat
Material, reduces stuck risk, effectively extends life of valve；
4th, before and after being installed on valve ball due to 180 ° of valve seat, Bidirectional seal structure is formed, so flow is double during valve in-site installation
To form, it is easily installed；
5th, due to arranging adjusting pad between valve seat and valve body, adjusting pad is only needed to change after sealing surface mild wear with regard to valve ball can be made
Continue to seal with valve seat, saved maintenance time and cost.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the vertical view of schematic structural view of the invention, and valve ball is in off state in figure.
Fig. 3 and Fig. 4 is the vertical view of schematic structural view of the invention, and valve ball is opening in figure.
Fig. 5 is the valve ball structure schematic diagram of the present invention.
Fig. 6 is the valve seat construction schematic diagram of the present invention.
Reference sign：1- valve bodies, 2- trim rings, 3- valve seats, 4- valve balls, 5- transmission shafts, 6- sealing rings, 7- adjusting pads,
8- upper covers, 9- bearings, 10- baffle rings, 11- filler assemblies, 12- gaskets.
Specific embodiment
With reference to specific drawings and examples, the invention will be further described.
Two way seal ball valve as shown in Figure 1, including valve body 1, valve seat 3, valve ball 4, transmission shaft 5 and upper cover 8, upper cover 8 is solid
The top of valve body 1 is scheduled on, valve ball 4 is mounted in valve body 1, and 5 one end of transmission shaft is connected with valve ball 4.The input end of valve body 1 and outlet
End is equipped with symmetrical valve seat 3, valve seat 3 centered on valve ball 4 and the position sealed with valve ball 4 is compacted to using trim ring 2.In upper cover 8
Interior to be equipped with filler assembly 11 and bearing 9, transmission shaft 5 is connected across upper cover 8, filler assembly 11 and bearing 9 with valve ball 4 by spline
It connects.Valve body 1 is top assembling structure, and left and right flange is arranged symmetrically, and the axis of transmission shaft 5 is located on the symmetrical centre face of valve body 1；Valve ball
4 centre of gyration line and the axis collinear of transmission shaft 5, valve ball 4 can directly take out from 1 intracavitary of valve body after removing upper cover 8.Valve seat
Seal groove is provided on 3 side wall, sealing ring 6 is equipped in seal groove.Transmission shaft 5 is equipped with baffle ring 10, and baffle ring 10, which is located at, to be filled out
Expect between component 11 and bearing 9.The side wall of valve seat 3 is equipped with step, and adjusting pad 7, sealing are equipped between step high spot and valve body 1
Adjusting pad 7 is only needed to change after the mild wear of face with regard to valve ball 4 and valve seat 5 can be made to continue to seal, has saved maintenance time and cost.
As shown in Figure 2：Valve seat 3 and the eccentric semi-spherical of valve ball 4 form sealing pair during closed state.As shown in Figure 3,4：It opens
When valve ball 4 counterclockwise after rotation minute angle δ, eccentric semi-spherical realized with regard to valve seat 4 can be detached from, after being rotated by 90 ° runner completely through,
Valve is opened.
Valve ball 4 includes two eccentric semi-sphericals, the revolution of two eccentric semi-spherical centre ofs sphere of valve ball 4 along valve ball 4 as shown in Figure 5,6
The symmetrical arranged off-centre of center line, the two eccentric semi-spherical centre ofs sphere are located at turn around center line both sides, and eccentric distance e is equal, spherical radius SR phases
Deng.The runner hole of valve seat 3 is eccentric orfice, and eccentric semi-spherical is equal with the eccentricity in runner hole, and eccentric direction is identical.
The course of work and operation principle of the present invention is as follows：
Valve ball 4, which is transmitted after axis 5 drives, to be rotated, and is formed sealing pair in closed position and valve seat 3, is cut off runner, valve ball 4 is being closed
In the process, valve ball runner mouth can remove the buildup of sealing surface attachment；Conversely, valve ball 4 just takes off after rotating low-angle with valve seat 3
From in transmission shaft 5 and the collective effect lower valve ball 4 of Fluid pressure, opening, runner perforation form direct-through valve rapidly later.
Claims (7)
1. a kind of two way seal ball valve, including valve body（1）, valve seat（3）, valve ball（4）, transmission shaft（5）And upper cover（8）, it is described on
Lid（8）It is fixed on valve body（1）Top, the valve ball（4）Mounted on valve body（1）It is interior, transmission shaft（5）One end and valve ball（4）Phase
Even, which is characterized in that the valve body（1）Inlet end and an outlet end be equipped with valve ball（4）Centered on symmetrical valve seat（3）, valve
Seat（3）Utilize trim ring（2）It is compacted to and valve ball（4）The position of sealing；The valve ball（4）Including two eccentric semi-sphericals, the valve
Seat（3）Runner hole for eccentric orfice, eccentric semi-spherical is equal with the eccentricity in runner hole, and eccentric direction is identical.
2. two way seal ball valve according to claim 1, which is characterized in that the upper cover（8）It is interior to be equipped with filler assembly
（11）And bearing（9）, transmission shaft（5）Across upper cover（8）, filler assembly（11）And bearing（9）With valve ball（4）It is connected.
3. two way seal ball valve according to claim 1 or 2, which is characterized in that the valve body（1）It is left to push up assembling structure
Right flange is arranged symmetrically, transmission shaft（5）Axis be located at valve body（1）Symmetrical centre face on；Valve ball（4）Centre of gyration line with
Transmission shaft（5）Axis collinear.
4. two way seal ball valve according to claim 1, which is characterized in that the valve ball（4）Two eccentric semi-spherical balls
The heart is along valve ball（4）The symmetrical arranged off-centre of centre of gyration line.
5. two way seal ball valve according to claim 1, which is characterized in that the valve seat（3）Side wall on be provided with sealing
Ring recess, seal groove is interior to be equipped with sealing ring（6）.
6. two way seal ball valve according to claim 1, which is characterized in that the transmission shaft（5）It is equipped with baffle ring（10）,
Baffle ring（10）Positioned at filler assembly（11）And bearing（9）Between.
7. two way seal ball valve according to claim 1, which is characterized in that the valve seat（3）Side wall be equipped with step, platform
Rank high spot and valve body（1）Between be equipped with adjusting pad（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144242.6A CN108167467A (en) | 2018-02-12 | 2018-02-12 | A kind of two way seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144242.6A CN108167467A (en) | 2018-02-12 | 2018-02-12 | A kind of two way seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108167467A true CN108167467A (en) | 2018-06-15 |
Family
ID=62512433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810144242.6A Pending CN108167467A (en) | 2018-02-12 | 2018-02-12 | A kind of two way seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167467A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198524A (en) * | 2021-12-07 | 2022-03-18 | 宣达实业集团有限公司 | Adjustable eccentric friction-free hard sealing ball valve |
| CN119163770A (en) * | 2024-11-06 | 2024-12-20 | 洛阳船舶材料研究所(中国船舶集团有限公司第七二五研究所) | A global eccentric ball valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0216200A2 (en) * | 1985-09-10 | 1987-04-01 | Franco Narduzzi | Cutoff valve, particularly for the cutoff of high-temperature fluids |
| CN206093034U (en) * | 2016-10-09 | 2017-04-12 | 明珠阀门集团有限公司 | Four off -centre of upper assembling type ball valve sealed firmly |
| CN107339456A (en) * | 2017-08-23 | 2017-11-10 | 昆山维萨阀门有限公司 | A kind of eccentric hard sealed ball valve |
| CN208185500U (en) * | 2018-02-12 | 2018-12-04 | 无锡智能自控工程股份有限公司 | A kind of two way seal ball valve |
-
2018
- 2018-02-12 CN CN201810144242.6A patent/CN108167467A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0216200A2 (en) * | 1985-09-10 | 1987-04-01 | Franco Narduzzi | Cutoff valve, particularly for the cutoff of high-temperature fluids |
| CN206093034U (en) * | 2016-10-09 | 2017-04-12 | 明珠阀门集团有限公司 | Four off -centre of upper assembling type ball valve sealed firmly |
| CN107339456A (en) * | 2017-08-23 | 2017-11-10 | 昆山维萨阀门有限公司 | A kind of eccentric hard sealed ball valve |
| CN208185500U (en) * | 2018-02-12 | 2018-12-04 | 无锡智能自控工程股份有限公司 | A kind of two way seal ball valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198524A (en) * | 2021-12-07 | 2022-03-18 | 宣达实业集团有限公司 | Adjustable eccentric friction-free hard sealing ball valve |
| CN114198524B (en) * | 2021-12-07 | 2023-10-20 | 宣达实业集团有限公司 | Adjustable eccentric friction-free hard sealing ball valve |
| CN119163770A (en) * | 2024-11-06 | 2024-12-20 | 洛阳船舶材料研究所(中国船舶集团有限公司第七二五研究所) | A global eccentric ball valve |
| CN119163770B (en) * | 2024-11-06 | 2025-09-09 | 洛阳船舶材料研究所(中国船舶集团有限公司第七二五研究所) | Global eccentric ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180615 |
|
| RJ01 | Rejection of invention patent application after publication |