CN208185500U - A kind of two way seal ball valve - Google Patents
A kind of two way seal ball valve Download PDFInfo
- Publication number
- CN208185500U CN208185500U CN201820254327.5U CN201820254327U CN208185500U CN 208185500 U CN208185500 U CN 208185500U CN 201820254327 U CN201820254327 U CN 201820254327U CN 208185500 U CN208185500 U CN 208185500U
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- valve
- ball
- seat
- valve ball
- transmission shaft
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- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution 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
- 238000005272 metallurgy Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model belongs to control valve for fluids technical field, 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 the symmetrical valve seat centered on valve ball, and the valve seat is compacted to the position sealed with valve ball using pressing 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 and the eccentricity of runner hole are equal, and eccentric direction is identical.The utility model sealing effect 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, valve service life is effectively extended.
Description
Technical field
The utility model relates to a kind of two way seal ball valves, specifically, be it is a kind of by two eccentric semi-sphericals form valve ball,
Valve seat is provided with the floating type straight-through valve of eccentric orfice, belongs to control valve for fluids technical field.
Background technique
Floating type straight-through valve has that negotiability is good, torque is small, rapid operation, structure are simple, easy to maintenance and cost
The advantages that cheap, is widely used in the cutting 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 outlet end valve seat, realizes that one-way sealing, such outlet end valve seat are just born
Whole flows to pressure, it is contemplated that the influence of valve ball self 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
8 " working conditions below.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 outlet end valve seat, at this moment need to apply between valve ball and valve seat pretightning force, 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, input end valve seat is made to become adjustable
The elastic seat for the range that exerts a force, to improve the reliability of sealing.But initial tension of spring deficiency cannot guarantee to seal, and
Excessive pretightning force will increase moment of friction again, cause valve seat to overload deformation failure, while the impurity in fluid is also easy to overstock
Into valve seat back side spring eye or valve seat and valve body gap, so that valve seat is lost controllability, will lead to valve ball and valve seat when serious
It is stuck.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned floating type straight-through valve there are the problem of, a kind of two way seal is provided
Ball-valve structure, the sealing structure effect is good, and under identical negotiability, torque is small.In addition, the structure alleviates valve ball and valve
Seat sealing surface wear degree, avoids the stuck risk of valve ball, effectively extends valve service life.
According to technical solution provided by the utility model, the two way seal ball valve, including valve body, valve seat, valve ball, transmission
Axis 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,
The inlet end and an outlet end of the valve body is equipped with symmetrical valve seat, valve seat centered on valve ball and is compacted to using pressing ring close with valve ball
The position of envelope；The valve ball includes two eccentric semi-sphericals, and the runner hole of the valve seat is eccentric orfice, eccentric semi-spherical and runner hole
Eccentricity is equal, and 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, it is provided with seal groove on the side wall of the valve seat, is equipped with sealing ring in seal groove.
Further, the transmission shaft is equipped with retaining ring, and retaining 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 utility model, has the advantage that
1, since valve ball and valve seat have eccentric structure, valve forms sealing pair when closing, and 180 ° of valve seat are installed on valve ball
Front and back realizes that two sides valve seat seals simultaneously, and when pressure is smaller or unstable, valve ball and sealing surface of seat will not be detached from, and pressed
Sealing surface excessive wear caused by one-way sealing is avoided that when power is larger again；
2, since valve ball and valve seat have an eccentric structure, when valve opening, only needs lesser torque that valve ball can be made to be detached from valve
Seat, Fluid pressure pushes valve ball to rotate to opening direction at this time, realizes the rapid labour-saving movement of valve；
3, since valve ball and valve seat have eccentric structure, when valve is closed, eccentric valve ball can be scraped off and is attached on valve seat
Buildup, reduce stuck risk, effectively extend life of valve；
4, before and after being installed on valve ball due to 180 ° of valve seat, Bidirectional seal structure is formed, so flow when valve in-site installation
For bi-directional, it is easily installed；
5, due to arranging adjusting pad between valve seat and valve body, only needing to change adjusting pad after sealing surface mild wear can make
Valve ball and valve seat continue to seal, and have saved maintenance time and cost.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is the top view of the utility model structure diagram, and valve ball is in off state in figure.
Fig. 3 and Fig. 4 is the top view of the utility model structure diagram, and valve ball is open state in figure.
Fig. 5 is the valve ball structure schematic diagram of the utility model.
Fig. 6 is the valve seat construction schematic diagram of the utility model.
Description of symbols: 1- valve body, 2- pressing ring, 3- valve seat, 4- valve ball, 5- transmission shaft, 6- sealing ring, 7- adjusting pad,
8- upper cover, 9- bearing, 10- retaining ring, 11- filler assembly, 12- gasket.
Specific embodiment
Below with reference to specific drawings and examples, the utility model is described in further detail.
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 are solid
It is scheduled on the top of valve body 1, 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 the symmetrical valve seat 3 centered on valve ball 4, and valve seat 3 is compacted to the position sealed with valve ball 4 using pressing ring 2.In upper cover 8
Interior to be equipped with filler assembly 11 and bearing 9, transmission shaft 5 passes through upper cover 8, filler assembly 11 and bearing 9 and valve ball 4 and is connected 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 be directly from the intracavitary taking-up of valve body 1 after removing upper cover 8.Valve seat
It is provided with seal groove on 3 side wall, is equipped with sealing ring 6 in seal groove.Transmission shaft 5 is equipped with retaining ring 10, and retaining 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 can make valve ball 4 and valve seat 5 continue to seal, and save maintenance time and cost.
As shown in Figure 2: the eccentric semi-spherical of valve seat 3 and valve ball 4 forms sealing pair when closed state.It is as shown in Figure 3,4: to open
When valve ball 4 counterclockwise rotation minute angle δ after, eccentric semi-spherical can be detached from valve seat 4, after being rotated by 90 ° realize runner completely through,
Valve is opened.
Valve ball 4 as shown in Figure 5,6 includes two eccentric semi-sphericals, the revolution of two eccentric semi-spherical centre ofs sphere of valve ball 4 along valve ball 4
The symmetrical arranged off-centre of center line, the two eccentric semi-spherical centre ofs sphere are located at turn around center line two sides, and eccentric distance e is equal, spherical radius SR phase
Deng.The runner hole of valve seat 3 is eccentric orfice, and eccentric semi-spherical is equal with the eccentricity of runner hole, and eccentric direction is identical.
The course of work and working principle of the utility model are 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 exists
In closing process, valve ball runner mouth can remove the buildup of sealing surface attachment；Conversely, valve ball 4 rotate low-angle after just with valve seat 3
It is detached from, is opened rapidly in transmission shaft 5 and the collective effect lower valve ball 4 of Fluid pressure later, runner perforation forms direct-through valve.
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) is fixed on the top of valve body (1), and the valve ball (4) is mounted in valve body (1), transmission shaft (5) one end and valve ball (4) phase
Even, which is characterized in that the inlet end and an outlet end of the valve body (1) is equipped with symmetrical valve seat (3), valve centered on valve ball (4)
Seat (3) is compacted to the position with valve ball (4) sealing using pressing ring (2)；The valve ball (4) includes two eccentric semi-sphericals, the valve
The runner hole of seat (3) is eccentric orfice, and eccentric semi-spherical is equal with the eccentricity of runner hole, and eccentric direction is identical.
2. two way seal ball valve according to claim 1, which is characterized in that be equipped with filler assembly in the upper cover (8)
(11) upper cover (8), filler assembly (11) and bearing (9) are passed through and is connected with valve ball (4) with bearing (9), transmission shaft (5).
3. two way seal ball valve according to claim 1 or 2, which is characterized in that the valve body (1) is top assembling structure, left
Right flange is arranged symmetrically, and the axis of transmission shaft (5) is located on the symmetrical centre face of valve body (1)；The centre of gyration line of valve ball (4) with
The axis collinear of transmission shaft (5).
4. two way seal ball valve according to claim 1, which is characterized in that two eccentric semi-spherical balls of the valve ball (4)
Centre of gyration line symmetrical arranged off-centre of the heart along valve ball (4).
5. two way seal ball valve according to claim 1, which is characterized in that be provided with sealing on the side wall of the valve seat (3)
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) is equipped with retaining ring (10),
Retaining ring (10) is located between filler assembly (11) and bearing (9).
7. two way seal ball valve according to claim 1, which is characterized in that the side wall of the valve seat (3) is equipped with step, platform
Adjusting pad (7) are equipped between rank high spot and valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254327.5U CN208185500U (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 |
|---|---|---|---|
| CN201820254327.5U CN208185500U (en) | 2018-02-12 | 2018-02-12 | A kind of two way seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208185500U true CN208185500U (en) | 2018-12-04 |
Family
ID=64439073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820254327.5U Active CN208185500U (en) | 2018-02-12 | 2018-02-12 | A kind of two way seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208185500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167467A (en) * | 2018-02-12 | 2018-06-15 | 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 CN201820254327.5U patent/CN208185500U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167467A (en) * | 2018-02-12 | 2018-06-15 | 无锡智能自控工程股份有限公司 | A kind of two way seal ball valve |
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