CN204610924U - A kind of fixing ball valve - Google Patents
A kind of fixing ball valve Download PDFInfo
- Publication number
- CN204610924U CN204610924U CN201520179531.1U CN201520179531U CN204610924U CN 204610924 U CN204610924 U CN 204610924U CN 201520179531 U CN201520179531 U CN 201520179531U CN 204610924 U CN204610924 U CN 204610924U
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- China
- Prior art keywords
- valve
- ball valve
- fixing ball
- valve body
- spheroid
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Abstract
The utility model discloses a kind of fixing ball valve, comprise: valve body, spheroid, valve seat and valve rod, a valve body chamber and a packing cavity is comprised in this valve body, this spheroid and this valve seat are all positioned in this valve body chamber, the valve rod be connected with this spheroid is positioned in this packing cavity, comprise a graphite packing between this packing cavity and this valve rod, this graphite packing is compressed after being exerted pressure by a Gland.
Description
Technical field
The utility model relates to a kind of valve controlled for fluid, particularly relates to a kind of fixing ball valve.
Background technique
Ball valve a kind of to be driven by valve rod by open-shut device (spheroid), and make the valve of 90 degree of rotary motions around the axis of valve rod, is mainly used in the regulating and control of fluid.Ball valve, since birth, 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, has belonged 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 are often in closed state under the effect of pressure medium, not easily by medium erosion, are easy to Operation and maintenance, 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., be widely used in every profession and trade.Ball valve body can be overall, also can be 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 is floating, and under pressure medium effect, spheroid can produce certain displacement and be pressed on the sealing surface of outlet end, ensures outlet end sealing.When pressure is larger, sealability is also better, but starting the moment of torsion of closing increases with the increase of pressure.The structure of floating ball ball valve is simple, good airproof performance, but the load that spheroid bears working medium has all passed to valve seat, therefore to consider that can valve seat withstand the work loads of spheroid medium, when being subject to elevated pressures extruding, flexible seat material offsets, and thus 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 removable.During work, the active force that before valve, hydrodynamic pressure produces on spheroid all passes to valve rod and stationary axle, spheroid can not be made to move to valve seat, thus 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 fixed to make spheroid, needs to fix spheroid, thus complex structure at upper and lower two end points, and manufacturing process is complicated relative to floating ball valve, and therefore manufacture cost is higher.On the other hand, sealed by rubber material between the valve rod of fixing ball valve and valve body.Rubber material can fatigue aging at high temperature under high pressure, and each seal ring of changing all must open valve, and change after unloading lower valve rod, operation is inconvenience very, and must temporary closure fluid line, causes the normal termination used.
Model utility content
In order to overcome the defect existed in prior art, the utility model provides a kind of manufacture cost lower, uses fixing ball valve more easily.
In order to realize above-mentioned model utility object, the utility model discloses a kind of support for fixing ball valve, comprise: at least two supports and the limiting board be positioned at above this support, the lower surface of this support contacts with the upper surface of the valve body of this fixing ball valve, this limiting board comprises a through hole for the valve rod through this fixing ball valve.
Further, this support comprises four supports, and this support comprises connecting groove, this limiting board comprises at least one sedimentation boss, and this sedimentation boss is for holding the bolt fixing this support and this valve body.
The utility model discloses a kind of fixing ball valve simultaneously, comprise: valve body, spheroid, valve seat and valve rod, a valve body chamber and a packing cavity is comprised in this valve body, this spheroid and this valve seat are all positioned in this valve body chamber, the valve rod be connected with this spheroid is positioned in this packing cavity, comprise a graphite packing between this packing cavity and this valve rod, this graphite packing is compressed after being exerted pressure by a Gland.
Further, the height of this Gland can regulate.
Further, this fixing ball valve also comprises a support, and this support is positioned at above this valve body, and this Gland is arranged in the space that this valve body and this support are formed.
Further, this support comprises at least two supports and the limiting board be positioned at above this support, and the lower surface of this support contacts with the upper surface of this valve body, this limiting board comprises a through hole for passing this valve rod.
Further, this valve body is formed by bar or forging manufacture.
Further, this valve seat is connected with this valve body by an elastic element, and this valve seat is made up of metal or pottery.
Further, this valve rod is positioned at the upper fixed groove of this spheroid, and on this, the bottom land of fixed groove is circular arc, the shape of this valve rod and fixed groove mating shapes on this.
Further, this Gland is fixed by a bolt and this valve body, by adjusting the height of this bolt to regulate the height of this Gland.
Further, this support will be convenient to install automatic controller by surperficial reserved location.
Further, limiting board comprises at least one sedimentation boss, this sedimentation boss is for holding the bolt fixing this support and this valve body.
Further, this support comprises some attachment holes, this attachment hole is for connecting the transmission device of this ball valve.
Compared with prior art, the structure that technological scheme provided by the utility model provides can when not needing to dismantle any parts when regular maintenance, highly reduce by regulating the use of filler and change frequency of maintenance, more more convenient than the sealing of employing uncontrollable O type circle.Again, the utility model provide more succinct than the fixing ball valve of prior art in its structure of fixing ball valve.3rd, by support provided by the utility model, directly can adjust the height of Gland from the side, reach the object regulating packed height.4th, the material that the utility model uses is bar or forging, and compare traditional Mechanical processing of casting and obtain ball valve, the better material of mechanical property is finer and close, and inside is also not easy to occur defect.
Accompanying drawing explanation
Can to be described in detail by following model utility and institute's accompanying drawings is further understood about advantage of the present utility model and spirit.
Fig. 1 is the structural representation of fixing ball valve provided by the utility model;
Fig. 2 is the sectional view of fixing ball valve provided by the utility model;
Fig. 3 is use and the closed condition schematic diagram of fixing ball valve provided by the utility model;
Fig. 4 is the structural representation of support provided by the utility model.
Embodiment
The support for fixing ball valve and the fixing ball valve of a kind of specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.But, 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 combine with other known technologies or function other technologies identical with those known technologies and implements.
In the following description, in order to clear displaying structure of the present utility model and working method, to be described by many Directional words, but by the Word Understanding such as "front", "rear", "left", "right", " outward ", " interior ", " outwards ", " inwardly ", " axis ", " radial direction " for convenience of term, and word of limitation should do not should be understood to.
The purpose of this utility model is to provide a kind of support for fixing ball valve and fixing ball valve can realize by compressing moveable Gland to reach the working life extending its filler, again can compared with prior art reduction manufacture cost.
Fig. 1 is the structural representation of fixing ball valve provided by the utility model, and Fig. 2 is the sectional view of fixing ball valve provided by the utility model.As shown in Figure 1, 2, fixing ball valve provided by the utility model comprises valve body 11 and connecting body 13.Valve body 11 comprises body cavity and pipeline.Spheroid 20 is installed in body cavity, and ball valve can rotate relative to valve body 11 around spin axis R.Spin axis R is orthogonal to longitudinal axis L.Spheroid 20 comprises a through hole 22.The diameter of the through hole 22 of spheroid 20 is almost consistent with the pipe diameter of valve body.Spheroid 20 can rotate between the open position and the closed position of through hole 22 transverse to pipeline of through hole 22 and pipe alignment around spin axis R.
The utility model provides a kind of support for ball valve as shown in Figure 4.This support 12 is fixed on valve body 11, and its monnolithic case is roughly in a cuboid.This support 12 comprises several supports 24, and the top of support 24 comprises a limiting board 23, limiting board 23 comprises a through hole, for passing valve rod 14.The downward sedimentation in relative both sides of limiting board 23 forms a boss, and this boss is used for construction bolt 15.The quantity of boss is four in the present embodiment, symmetrical each two, but those of ordinary skill in the art should know is boss can also be designed to asymmetric formula, and quantity also can be two, three etc.Reserved some tapped holes on support 24, are convenient to install automatic controller.The utility model, so the support provided both was applicable to fixing ball valve, also can be suitable for and floating ball valve.
Gland 16 is between valve body 11 and support 12.Gland 16 is fixed by a bolt and valve body 11, can be regulated the height of Gland 16 like this by the height of adjusting bolt.As shown in Figure 1, the fixing bolt of Gland 16 is arranged in the space that limiting board, support 24 and valve body 11 are formed, and regulates the elasticity of Gland when can open removal bracket with instrument in side.
Filler provided by the utility model is graphite packing.Compared with gum filler, graphite packing has the advantage of corrosion-and high-temp-resistant.When graphite packing is along with after using process is worn, enhanced leaktightness performance can be carried out by the height of the Gland 16 regulating top, decrease the frequency of replacing.
Valve seat 40 provided by the utility model is connected with valve body 11 by a trim ring 41, valve seat 40, trim ring 41 and valve body 11 by rigid material, as stainless steel is made.In another kind of better embodiment, in order to realize best sealing effect, this valve seat 40 adds a groove, for placing plastic seal part in this groove on a face near spheroid 20.Like this when spheroid 20 contacts with valve seat 40, because the existence of plastic seal makes medium can not flow out between spheroid and valve seat, and because the lower distortion of the effect of being stressed of this plastic seal is little, therefore spheroid 20 can not the plastic material of badly damaged valve base surface after being adjacent to pressurized with valve seat 40.
As shown in Figure 3, wherein a figure is the closed position schematic diagram of through hole 22 transverse to pipeline to the detailed structure view of spheroid 20 provided by the utility model, and b figure is spheroid 20 around spin axis R at the open position schematic diagram of through hole 22 with pipe alignment.This spheroid 20 comprises upper and lower two fixed grooves 21,23.Wherein go up fixed groove 21 for holding valve rod 14, lower fixed groove 23 is for holding stationary axle.The bottom land of upper fixed groove 23 is a circular arc type groove, the shape of the lower end of valve rod 14 and the mating shapes of upper fixed groove 23.When the through hole 22 of spheroid 20 is transverse to pipeline, because valve rod 14 and stationary axle 17 fix spheroid 20 simultaneously, therefore spheroid 20 can not be subjected to displacement.
Valve body provided by the utility model and connecting body adopt bar or forging production and processing, and compared to foundry goods, mechanical property is better, and material is finer and close.
Just preferred embodiment of the present utility model described in this specification, above embodiment is only in order to illustrate the technical solution of the utility model 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 within scope of the present utility model.
Claims (10)
1. a fixing ball valve, it is characterized in that, comprise: valve body, spheroid, valve seat and valve rod, described valve body comprises a valve body chamber and a packing cavity, described spheroid and described valve seat are all positioned in described valve body chamber, the valve rod be connected with described spheroid is positioned over in described packing cavity, comprises a graphite packing between described packing cavity and described valve rod, and described graphite packing is compressed after being exerted pressure by a Gland.
2. fixing ball valve as claimed in claim 1, it is characterized in that, the height of described Gland can regulate.
3. fixing ball valve as claimed in claim 1, it is characterized in that, described fixing ball valve also comprises a support, and described support is positioned at above described valve body, and described Gland is arranged in the space that described valve body and described support are formed.
4. fixing ball valve as claimed in claim 3, it is characterized in that, described support comprises at least two supports and the limiting board be positioned at above described support, and the lower surface of described support contacts with the upper surface of described valve body, described limiting board comprises a through hole for passing described valve rod.
5. fixing ball valve as claimed in claim 1, it is characterized in that, described valve body is formed by bar or forging manufacture.
6. fixing ball valve as claimed in claim 1, is characterized in that, described valve seat is connected with described valve body by an elastic element, and described valve seat is made up of metal or pottery.
7. fixing ball valve as claimed in claim 1, it is characterized in that, described valve rod is positioned at the upper fixed groove of described spheroid, and the bottom land of fixed groove is circular arc, and shape and the fixed groove shape of described valve rod match.
8. fixing ball valve as claimed in claim 1, it is characterized in that, described Gland is fixed by a bolt and described valve body, by adjusting the height of described bolt to regulate the height of described Gland.
9. fixing ball valve as claimed in claim 4, it is characterized in that, described limiting board comprises at least one sedimentation boss, described sedimentation boss is for holding the bolt of fixing described support and described valve body.
10. fixing ball valve as claimed in claim 3, it is characterized in that, described support comprises some attachment holes, described attachment hole is for connecting the transmission device of described ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520179531.1U CN204610924U (en) | 2015-03-27 | 2015-03-27 | A kind of fixing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520179531.1U CN204610924U (en) | 2015-03-27 | 2015-03-27 | A kind of fixing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204610924U true CN204610924U (en) | 2015-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520179531.1U Active CN204610924U (en) | 2015-03-27 | 2015-03-27 | A kind of fixing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204610924U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151577A (en) * | 2015-03-27 | 2016-11-23 | 贺增华 | A kind of support for ball valve and fixing ball valve |
| CN109268530A (en) * | 2018-11-29 | 2019-01-25 | 凯斯特阀门集团有限公司 | A kind of Special ball valve for oxygen |
-
2015
- 2015-03-27 CN CN201520179531.1U patent/CN204610924U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151577A (en) * | 2015-03-27 | 2016-11-23 | 贺增华 | A kind of support for ball valve and fixing ball valve |
| CN109268530A (en) * | 2018-11-29 | 2019-01-25 | 凯斯特阀门集团有限公司 | A kind of Special ball valve for oxygen |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |