CN203797027U - Floating ball valve - Google Patents
Floating ball valve Download PDFInfo
- Publication number
- CN203797027U CN203797027U CN201420198017.8U CN201420198017U CN203797027U CN 203797027 U CN203797027 U CN 203797027U CN 201420198017 U CN201420198017 U CN 201420198017U CN 203797027 U CN203797027 U CN 203797027U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- floating ball
- spheroid
- ball valve
- 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 47
- 239000000463 material Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 239000004033 plastic Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Taps Or Cocks (AREA)
Abstract
The utility model discloses a floating ball valve which comprises a valve body, a ball body, a valve seat and a valve rod, wherein a valve body cavity is formed in the valve body; the ball body and the valve seat are both arranged in the valve body cavity; the valve rod is connected with the ball body and placed on the valve body; the valve seat is connected with the valve body through an elastic element; when the floating ball valve is closed, the ball body and the valve seat of the floating ball valve can move in the valve body cavity.
Description
Technical field
The utility model relates to a kind of valve of controlling for fluid, relates in particular to a kind of floating ball valve.
Background technique
Ball valve is a kind ofly by open-shut device (spheroid), by valve rod, to be driven, and makes around the axis of valve rod the valve that 90 degree rotatablely move, and is mainly used in adjusting and the control of fluid.Ball valve, since being born, has been widely used in industries such as petroleum refining, long-distance transport pipes, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, iron and steel, belongs to requisite component in mechanical field.
The main feature of ball valve is that compact structure own is simple, sealing is reliable, easy to maintenance, sealing surface and sphere often in closed state, are difficult for by medium erosion easy operating and maintenance under the effect of pressure medium, be applicable to the general work media such as water, solvent, acid and rock gas, but also be applicable to the severe medium of operating conditions, as oxygen, hydrogen peroxide, methane and ethene etc., in every profession and trade, be widely used.Ball valve body can be whole, can be also knockdown.
Prior art field, ball valve can be divided into floating ball valve and fixing ball valve.Wherein, 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.
Fixing ball valve is compared with floating ball valve, and 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 moment of torsion 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 complicated with respect to floating ball valve.
Compare with fixing ball valve, the manufacturing process of floating ball valve is simple, with low cost, but because whole pressure is born by valve seat, while therefore causing open and close floating ball valve, the driving force of needs is very large.On the other hand, because floating valve seat of the prior art is all flexible valve seat, multiselect is made with teflon, see patent CN201020182464.6, when pressure medium increases, the pressure that spheroid passes to valve seat also can increase, cause the prooving of valve seat to increase, thereby sealability decline.
In sum, in prior art, need a kind of new floating ball valve that can effectively overcome above-mentioned defect.
Model utility content
In order to overcome the defect existing in prior art, the utility model provides a kind of spheroid, the two float type floating ball valves of valve seat.
In order to realize above-mentioned model utility object, the utility model discloses a kind of floating ball valve, comprise valve body, spheroid, valve seat and valve rod, in this valve body, comprise a valve body chamber, this spheroid and this valve seat are all positioned in this valve body chamber, this valve rod is connected with this spheroid and is placed on this valve body, it is characterized in that, this valve seat is connected with this valve body by an elastic element; When this floating ball valve is closed, the spheroid of this floating ball valve and valve seat all move in this valve body chamber.
Further, this elastic element is helical spring, and this helical spring one end is connected with this valve seat, and the other end is connected with this valve body.
Further, this valve seat is made by rigid material.This valve seat is made by metal or pottery.This valve seat comprises a seal ring, and this valve seat is connected with this spheroid by sealing circle.This valve seat is comprising one first groove near in the one side of this spheroid, and this first groove is used for placing sealing circle.This valve seat is comprising one second groove near in the one side of this valve body, and this second groove is used for placing one second seal ring.This second seal ring is O RunddichtringO or V-shaped seal ring.
Further, between this valve seat and this valve body, comprise a gap.This spheroid in this valve body chamber movably distance be greater than this gap.
Compared with prior art, floating ball valve provided by the utility model, designs spheroid, valve seat simultaneously and becomes and can float first, and utilizes elastic element to make by elastic element, to connect between valve seat and valve body.Can realize following advantage so simultaneously:
The first,, because pressure is disperseed by a plurality of parts, this floating ball valve 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, valve seat provided by the utility model and spheroid can be used under the rugged environment such as temperature, pressure change greatly.
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 schematic diagram of floating ball valve provided by the utility model.
Embodiment
Below in conjunction with accompanying drawing, describe valve seat and the floating ball valve 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.
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. a floating ball valve, comprise valve body, spheroid, valve seat and valve rod, in described valve body, comprise a valve body chamber, described spheroid and described valve seat are all positioned in described valve body chamber, described valve rod is connected with described spheroid and is placed on described valve body, it is characterized in that, described valve seat is connected with described valve body by an elastic element; When described floating ball valve is closed, described spheroid and valve seat all move in described valve body chamber.
2. 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. floating ball valve as claimed in claim 1, is characterized in that, described valve seat is made by rigid material.
4. floating ball valve as claimed in claim 3, is characterized in that, described valve seat is made by metal or pottery.
5. floating ball valve as claimed in claim 3, is characterized in that, described rigidity valve seat comprises a seal ring, and described valve seat is connected with described spheroid by described seal ring.
6. floating ball valve as claimed in claim 5, is characterized in that, described rigidity 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 seal ring.
7. floating ball valve as claimed in claim 6, is characterized in that, described rigidity valve seat is comprising one second groove near in the one side of described valve body, and described the second groove is used for placing one second seal ring.
8. floating ball valve as claimed in claim 7, is characterized in that, described the second seal ring is O RunddichtringO or V-shaped seal ring.
9. floating ball valve as claimed in claim 1, is characterized in that, between described valve seat and described valve body, comprises a gap.
10. floating ball valve as claimed in claim 9, is characterized in that, described spheroid in described valve body chamber movably distance be greater than described gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198017.8U CN203797027U (en) | 2014-04-22 | 2014-04-22 | Floating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420198017.8U CN203797027U (en) | 2014-04-22 | 2014-04-22 | Floating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797027U true CN203797027U (en) | 2014-08-27 |
Family
ID=51379238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420198017.8U Expired - Lifetime CN203797027U (en) | 2014-04-22 | 2014-04-22 | Floating ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797027U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982671A (en) * | 2014-04-22 | 2014-08-13 | 贺增华 | Floating ball valve |
-
2014
- 2014-04-22 CN CN201420198017.8U patent/CN203797027U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982671A (en) * | 2014-04-22 | 2014-08-13 | 贺增华 | Floating ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |
|
| CX01 | Expiry of patent term |