CN203797028U - Valve base for floating ball valve - Google Patents
Valve base for floating ball valve Download PDFInfo
- Publication number
- CN203797028U CN203797028U CN201420198539.8U CN201420198539U CN203797028U CN 203797028 U CN203797028 U CN 203797028U CN 201420198539 U CN201420198539 U CN 201420198539U CN 203797028 U CN203797028 U CN 203797028U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- floating ball
- ball valve
- 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.)
- Expired - Lifetime
Links
- 238000007667 floating Methods 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 description 10
- 239000004033 plastic Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Abstract
The utility model discloses a valve base for a floating ball valve. The valve base is connected with a valve body of the floating ball valve through an elastic unit. When the floating ball valve is closed, both the valve body and the valve base of the floating ball valve move in the cavity of the valve body.
Description
Technical field
The utility model relates to a kind of valve of controlling for fluid, relates in particular to a kind of valve seat for floating ball valve.
Background technique
Prior art field, ball valve can be divided into floating ball valve and fixing ball valve.Wherein, fixing ball valve refers to that spheroid does not float, and valve seat is movable.During work, the active force that before valve, hydrodynamic pressure produces on spheroid all passes to valve rod, can not make spheroid move to valve seat, thereby valve seat can not bear excessive pressure, so the torque of fixing ball valve is little, valve seat distortion is little, sealability is stable, long service life, is applicable to high pressure, heavy caliber occasion.Typically, fixing ball valve is for spheroid is fixed, and complex structure, manufacturing process is more than floating ball valve.
Floating ball valve refers to that the spheroid of ball valve floats, and under pressure medium effect, spheroid can produce certain displacement and be pressed on the sealing surface of outlet end, guarantees outlet end sealing.When pressure is larger, sealability is also better, and the moment of torsion that still startup is closed increases with the increase of pressure.Floating ball ball valve simple in structure, good airproof performance, has all passed to valve seat but spheroid bears the load of working medium, therefore to consider that can valve seat hold out against the work loads of spheroid medium, when being subject to elevated pressures extruding, flexible seat material is offset, thereby sealing effect declines.This structure, is generally used for mesolow, small-bore occasion.
Compare with fixing ball valve, floating ball valve simple in structure, manufacturing process is also relatively simple, and cost is also just cheap, but because whole pressure is born by valve seat, while therefore causing open and close floating ball valve, the driving force of needs is also larger.On the other hand, when unlatching moment of torsion is very large, the pressure that valve seat itself bears just increases, and is easy to damage, and causes medium to be revealed.Even if do not arrive damaged condition, the frictional force between spheroid and valve seat can increase, and causes valve seat to produce wearing and tearing, thereby reduces the working life of valve seat.
In sum, in prior art, need a kind of valve seat that can effectively overcome the new floating ball valve of above-mentioned defect.
Model utility content
In order to overcome the defect existing in prior art, the utility model provides a kind of valve seat for floating ball valve, and when floating ball valve is closed, valve seat can freely move in medium.
In order to realize above-mentioned model utility object, the utility model discloses a kind of valve seat for floating ball valve, it is characterized in that, between the valve body of this valve seat and this floating ball valve, by a Flexible element, be connected, when this floating ball valve is closed, the spheroid of this floating ball valve and this valve seat all move in this valve body chamber.
Further, this elastic element is a plurality of helical springs, and this helical spring one end is connected with this valve seat, and the other end is connected with this valve body, thereby the former valve seat fixing can untrammeledly be moved in valve body.
Further, this valve seat is made by rigid material.This valve seat is made by metal or pottery.This valve seat contacts with this spheroid by a flexible material.This valve seat is plane or sphere near the face of this spheroid.This valve seat is comprising one first groove near in the one side of this spheroid, and this first groove is used for placing this flexible material.This valve seat is near comprising one second groove in the one side of this spheroid, and this flexible material is embedded in the one the second grooves.This flexible material is sprayed or is adopted other techniques to be bonded in the surface of this valve seat.This valve seat is comprising one the 3rd groove near in the one side of this valve body, and this third groove is for placing the seal ring of a flexible material, for the sealing between valve seat and valve body.
Compared with prior art, can realize following advantage simultaneously:
The first,, because pressure is disperseed by a plurality of parts, the floating ball valve that this valve seat is installed can be used in larger sized pipeline, under larger pressure environment; The second, because spheroid, valve seat all can float, make this floating ball valve when opening without removing in advance valve seat, only by the position regulation between the two, can realize low moment of torsion, easily open; Three, valve seat has adopted rigid material, and pressure disperseed by a plurality of parts, makes the longer service life of this floating ball valve, structure more firm; Four, the floating ball valve of this valve seat of use provided by the utility model can be used under the rugged environment such as temperature, pressure change greatly.If the 5th adopt valve seat of the present utility model be by rigid material and spheroid contact surface be spraying or thin type structure, can greatly improve floating ball valve and open and close the large situation of moment of torsion, because rigidity valve seat directly bears pressure medium, the friction when switching is mobile of spheroid and valve seat is born by the minimum plastic material of friction factor.
Accompanying drawing explanation
About advantage of the present utility model and spirit, can describe in detail and appended graphic being further understood by following model utility.
Fig. 1 is the structural representation of the floating ball valve that provides of prior art;
Fig. 2 is the structural representation of the first mode of execution for floating ball valve provided by the utility model;
Fig. 3 is the structural representation of the second mode of execution for floating ball valve provided by the utility model;
Fig. 4 is the structural representation of the second mode of execution of the valve seat for floating ball valve provided by the utility model;
Fig. 5 is the structural representation of the 3rd mode of execution of the valve seat for floating ball valve provided by the utility model.
Embodiment
Below in conjunction with accompanying drawing, describe the valve seat of a kind of specific embodiment of the present utility model in detail.Yet, the utility model should be understood as and be not limited to this mode of execution described below, and technical concept of the present utility model can be implemented with other known technologies or the combination of function other technologies identical with those known technologies.
In the following description, for clear structure of the present utility model and the working method of showing, to be described by all multidirectional words, but should be by Word Understandings such as 'fornt', 'back', " left side ", " right side ", " outward ", " interior ", " outwards ", " inwardly ", " axially ", " radially " for convenience of term, and not should be understood to word of limitation.
Fig. 1 is the opening state of floating ball valve in prior art.Wherein 10 is valve rods, the 11st, spheroid, the 12nd, medium channel, the 13rd, valve body, the 14th, valve seat.In prior art, the valve seat 14 that floating ball valve is used must be that elastic material is made, otherwise under the closed condition of floating ball valve, cannot realize sealing.Under the opening state of floating ball valve, MEDIA FLOW is through medium channel 12 and spheroid 11.In prior art, ball valve enters by closing the moment of torsion of all wishing as far as possible to reduce valve rod while opening, can reduce like this driving force needing while opening, and can also reduce the wearing and tearing of valve seat, avoids the decline of sealability.In order to reduce the unlatching moment of torsion of valve rod, the frictional force between valve seat and spheroid of just must trying every possible means to reduce.
Fig. 2 is the structural representation of the valve seat for floating ball valve provided by the utility model.Floating ball valve shown in Fig. 2 is now closed state.Wherein valve body forms a valve body chamber, and spheroid and valve seat are all positioned in this valve body chamber.When this floating ball valve is opened, valve body has been full of medium in chamber, and MEDIA FLOW is through described spheroid 24 and passage 22.Because spheroid 24 of the present utility model and valve seat 26 can move in valve body chamber, therefore, after medium enters valve, under in spheroid chamber, the pressure of medium promotes, relocatable spheroid 24 carries out closely sealed with valve seat 26 movably.Because valve seat 26 is connected with valve body by an elastic element 23, when the pressure therefore bearing on valve seat 26 increases, elastic element 23 can sponge partial pressure.Between valve seat 26 and valve body 21, there is a gap d 1.When the pressure producing when the interior medium of passage 22 continues to increase, promote this spheroid 24 and move.Spheroid transportable scope d2 in passage is greater than movably scope d1 of valve seat.When valve seat 26 moves to the limit, valve seat 26 is close to valve body 21 and elastic element 23 simultaneously, so the pressure between spheroid and valve seat is dispersed to by valve seat, elastic element, three parts of valve body, bears, and body intracavity pressure distributes variation has also occurred simultaneously.So compared with prior art, the ball valve that spheroid provided by the utility model, valve seat simultaneously can be unsteady is more adapted under the pressure environment of larger caliber and Geng Gao.
Floating ball valve provided by the utility model, when valve rod 20 starts to rotate, due to the existence of the frictional force between valve seat 26 and spheroid 24, there is deformation in extrusion spring 23 automatically, and spring absorbs frictional force by deformation, and while therefore opening, moment of torsion reduces greatly.Compared with prior art, valve seat cannot move and will bear whole pressure mediums, and obviously frictional force is just large, causes the wearing and tearing of valve seat when repeatedly opening closure to increase.
In prior art, the valve seat that floating ball valve is used must be that elastic material is made, otherwise cannot realize sealing.In the utility model, because valve seat 26 can float equally in valve body chamber, so in the utility model, valve body adopts rigid material, and as metal, pottery etc. is made, meanwhile, valve seat and spheroid contact surface are still covered by the less plastic material of friction factor.Like this, more strengthen the working life of valve seat itself, do not increased again friction pressure, reduced the risk of the sealing effect variation causing because of valve seat damage.In another kind of better embodiment, in order to realize best sealing effect, this valve seat 26 is near increasing a groove on a face of spheroid, in this groove 25 for placing plastic material Sealing.Like this when spheroid 24 contacts with valve seat 26, because the existence of plastic seal can not flowed out medium between spheroid and valve seat, and because the lower distortion of the effect of being stressed of this plastic seal is little, so the plastic material that spheroid can badly damaged valve base surface after being adjacent to pressurized with valve seat 26.Meanwhile, on the face that we can also be connected with valve body 21 at valve seat 26, set up again a groove 27, for placing the seal ring of the various shapes such as O type or V-type.Compared with prior art, floating ball valve provided by the utility model, go for temperature, pressure changes under violent environment, this is because when low temperature occurs, the rates of thermal expansion difference of ball valve material and shrinkage deformation, relocatable spheroid and relocatable valve seat regulate pressure between the two mutually, thereby do not need manual intervention, automatically reach better sealing effect.When pressure increases, pressure is disperseed to bear by a plurality of component, because can there is not deformation because of single component overload.
Fig. 3 is the second mode of execution of the present utility model, with the first mode of execution by comparison, the valve seat shown in Fig. 3, has structure more succinct, the advantage that self-contained cost is lower.By spheroid 24 extruding, be there is deformation in the seal ring in Fig. 2, in order to prevent that seal ring 25 from dropping out from groove 25, the necessary long enough of groove 25, has so just caused the valve body body cavity chamber of whole floating ball valve to increase, further caused the increase of valve body, the rising of manufacture cost.In the second mode of execution, directly on the valve seat 30 of rigidity and the surface of spheroid, spray flexible material 32, as plastic materials such as rubber, teflon, nylon.In Fig. 4 (a), the face that valve seat 30 contacts with spheroid can be one or more planes.In Fig. 4 (b), the face that valve seat 30 contacts with spheroid is a sphere.With surface of contact be plane by comparison, surface of contact is sphere, and the joint of spheroid and valve seat, by a change face, has been disperseed to pressure.
Fig. 5 is the 3rd mode of execution of the present utility model, with the second mode of execution by comparison, the 3rd mode of execution has been done further improvement.In the second mode of execution, although in manufacture process, by techniques such as spraying, sintering, flexible material and metal seat valve are fixed together, but because the working environment temperature difference, the pressure reduction of floating ball valve changes acutely, may occur that flexible material departs from the situation of metal seat valve.Therefore in the 3rd mode of execution, on the face that valve seat 40 contacts with spheroid, set up two grooves 42, and flexible material 43 has been imbedded in groove.Preferentially, this groove is trapezoidal, circular groove (not shown), and the opening of groove is less than bottom surface, for flexible material 43 is stuck.Fig. 5 (a) (b) in, valve seat 40 is (b) identical with Fig. 4 (a) with the form of spheroid surface of contact, can be a plane, a plurality of plane or sphere.Wherein Fig. 5 (a) is the situation of two grooves, and Fig. 5 (b) is the situation of three grooves, and those skilled in the art should know that the pressure that the quantity of groove can need to be born by valve seat calculates and goes out with its specification, and are not used in restriction the utility model.
Described in this specification is preferred embodiment of the present utility model, and above embodiment is only in order to the technical solution of the utility model to be described but not to restriction of the present utility model.All those skilled in the art comply with design of the present utility model by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should be within scope of the present utility model.
Claims (10)
1. for a valve seat for floating ball valve, it is characterized in that, between the valve body of described valve seat and described floating ball valve, by a Flexible element, be connected, when described floating ball valve is closed, the spheroid of described floating ball valve and described valve seat all move in described valve body chamber.
2. the valve seat for floating ball valve as claimed in claim 1, is characterized in that, described elastic element is a plurality of helical springs, and described helical spring one end is connected with described valve seat, and the other end is connected with described valve body.
3. the valve seat for floating ball valve as claimed in claim 1, is characterized in that, described valve seat is made by rigid material.
4. the valve seat for floating ball valve as claimed in claim 3, is characterized in that, described valve seat is made by metal or pottery.
5. the valve seat for floating ball valve as claimed in claim 3, is characterized in that, described valve seat contacts with described spheroid by a flexible material.
6. the valve seat for floating ball valve as claimed in claim 5, is characterized in that, described valve seat is one or more planes or sphere near the face of described spheroid.
7. the valve seat for floating ball valve as claimed in claim 5, is characterized in that, described valve seat is comprising one first groove near in the one side of described spheroid, and described the first groove is used for placing described flexible material.
8. the valve seat for floating ball valve as claimed in claim 7, is characterized in that, described valve seat is near comprising one second groove in the one side of described spheroid, and described flexible material is embedded in described the one the second grooves.
9. the valve seat for floating ball valve as claimed in claim 5, is characterized in that, described flexible material is sprayed or be bonded to the surface of described valve seat.
10. the valve seat for floating ball valve as claimed in claim 3, is characterized in that, described valve seat is comprising one the 3rd groove near in the one side of described valve body, and described the 3rd groove is used for placing a seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198539.8U CN203797028U (en) | 2014-04-22 | 2014-04-22 | Valve base for floating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198539.8U CN203797028U (en) | 2014-04-22 | 2014-04-22 | Valve base for floating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797028U true CN203797028U (en) | 2014-08-27 |
Family
ID=51379239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420198539.8U Expired - Lifetime CN203797028U (en) | 2014-04-22 | 2014-04-22 | Valve base for floating ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006183A (en) * | 2014-04-22 | 2014-08-27 | 贺增华 | Valve seat used for floating ball valve |
| CN108953658A (en) * | 2018-08-23 | 2018-12-07 | 赵旭锋 | A kind of ball valve |
-
2014
- 2014-04-22 CN CN201420198539.8U patent/CN203797028U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006183A (en) * | 2014-04-22 | 2014-08-27 | 贺增华 | Valve seat used for floating ball valve |
| CN108953658A (en) * | 2018-08-23 | 2018-12-07 | 赵旭锋 | A kind of ball valve |
| CN108953658B (en) * | 2018-08-23 | 2019-09-10 | 远大阀门集团有限公司 | A kind of ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |