CN204729665U - A kind of DBB ball-valve structure - Google Patents
A kind of DBB ball-valve structure Download PDFInfo
- Publication number
- CN204729665U CN204729665U CN201520498690.8U CN201520498690U CN204729665U CN 204729665 U CN204729665 U CN 204729665U CN 201520498690 U CN201520498690 U CN 201520498690U CN 204729665 U CN204729665 U CN 204729665U
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- Prior art keywords
- valve
- ball
- described valve
- seat
- valve body
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Abstract
The utility model provides a kind of DBB ball-valve structure, it comprises the valve body of an integral type, the two ends of described valve body are provided with valve gap, be provided with two valve balls in described valve body, form lumen between two valve balls, the upper end of described valve ball is connected with valve rod, described valve rod stretches out described valve body, the lower end of described valve ball is connected with a back shaft, and described valve rod can drive described valve ball to rotate, and the both sides of described valve ball are provided with valve seat.The valve body of this DBB ball-valve structure designs for integral type, effectively can reduce the leak source that leaks of valve, the lower end of valve ball arranges back shaft simultaneously, valve ball is fixed design, moment of torsion can be effectively reduced, valve ball is not easily stuck, ensures that pipeline flow is unaffected, and therefore the use pressure range of ball valve is also corresponding more extensive.
Description
Technical field
The utility model relates to a kind of ball-valve structure, particularly a kind of DBB ball-valve structure.
Background technique
It is simple that ball valve has structure, switch is rapid, the advantages such as flow resistance is little, can cut off, distribute and change MEDIA FLOW to etc. numerous purposes, be 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, in national economy, occupy proportion increases year by year.Along with economic, scientific and technological developing rapidly; the design of pipeline also becomes increasingly complex; in some specific occasions; for guaranteeing effectively to cut off pipeline at any time; often can by two even multiple stage valve to be installed in series use; although the cut-out of this mounting type to pipeline adds multilayer protection, be the increase in the outer dew point of pipeline, increase installing space.
DBB ball valve is also known as having a double meaning pair of bleeder valve, and it has the valve of two sealing pairs, and when closed position, two sealing pairs can keep sealing state simultaneously, and in lumen, the valve body of (between two sealing pairs) has the interface of a pressure medium of releasing.Existing DBB ball valve many employings floating structure replaces the design of multiple valve series connection, although floating type DBB ball valve simplifies the installation of pipeline really, decrease outer leak source, but the general moment of torsion of floating ball valve is bigger than normal, particularly often easily stuck under the operating mode of some harshnesses such as high pressure and high temperature, cause valve to open, affect the functions such as the circulation of pipeline, the use of DBB ball valve will be limited like this.
Model utility content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide one effectively can reduce leakage point, saves installing space, stable performance, not easily stuck DBB ball-valve structure.
For achieving the above object and other relevant objects, the utility model provides a kind of DBB ball-valve structure, it comprises the valve body of an integral type, and the two ends of described valve body are provided with valve gap, is provided with two valve balls in described valve body, lumen is formed between two valve balls, the upper end of described valve ball is connected with valve rod, and described valve rod stretches out described valve body, and the lower end of described valve ball is connected with a back shaft, described valve rod can drive described valve ball to rotate, and the both sides of described valve ball are provided with valve seat.
Preferably, described valve seat comprises butterfly spring, valve seat pressure ring, valve base sealing ring, valve seat seat ring, described butterfly spring, valve seat pressure ring, valve base sealing ring, valve seat seat ring are arranged in order along the direction pointing to corresponding valve ball, described valve seat seat ring is provided with soft valve base piece, and described soft valve base piece and corresponding valve ball are sealed and matched.
Preferably, described valve body is provided with a pollutant exhaust hole, and described pollutant exhaust hole is communicated with described lumen by blowdown pressure release passage, and described pollutant exhaust hole place is provided with foam cock, and described lumen and described blowdown pressure release passage joint are provided with needle-valve.
Preferably, described valve gap is connected with described valve body screw thread, and described valve gap is by being threaded in described valve body.
As mentioned above, DBB ball-valve structure of the present utility model has following beneficial effect: the valve body of this DBB ball-valve structure designs for integral type, effectively can reduce the leak source that leaks of valve, the lower end of valve ball arranges back shaft simultaneously, valve ball is fixed design, can effectively reduce moment of torsion, and valve ball is not easily stuck, guarantee pipeline flow is unaffected, and therefore the use pressure range of ball valve is also corresponding more extensive.
Accompanying drawing explanation
Fig. 1 is the sectional view of the utility model embodiment.
Fig. 2 is the plan view of the utility model embodiment.
Fig. 3 be the utility model embodiment lumen with pollutant exhaust hole be communicated with schematic diagram.
Element numbers explanation.
1, valve body 2, valve gap 3, valve ball 4, soft valve body 5, valve seat seat ring 6, valve base sealing ring 7, valve seat pressure ring 8, butterfly spring 9, valve rod 10, upper press cover 11, back shaft 12, needle-valve 13, foam cock 14, blowdown pressure release passage.
Embodiment
By particular specific embodiment, mode of execution of the present utility model is described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present utility model and effect easily.
Refer to Fig. 1 to Fig. 3.Notice, structure, ratio, size etc. that this specification institute accompanying drawings illustrates, content all only in order to coordinate specification to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, still all should drop on technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
As shown in Figure 1, 2, 3, the utility model provides a kind of DBB ball-valve structure, and it comprises the valve body 1 of an integral type, is provided with valve gap 2 at the two ends of valve body 1, adopts the valve body 1 of integral type effectively can reduce the leak source that leaks of valve body.Be provided with in valve body 1 between two valve balls, 3, two valve balls 3 and form lumen, the upper end of valve ball 3 is connected with valve rod 9, valve rod 9 stretches out valve body 1, with the groove fit on valve ball 3 top bottom valve rod 9, valve body 1 is provided with upper press cover 10, and upper press cover 10 can prevent valve rod 9 pressurized from going out.The lower end of valve ball 3 is connected with a back shaft 11, and the bottom opening of valve ball 3 coordinates with back shaft 11, and such valve ball 3 just forms a fixed type ball valve arrangement.
The both sides of each valve ball 3 are equipped with valve seat, and respective two valve seats of valve ball 3 can realize inlet seal, provide multiple seal protection.Two valve balls 3 are symmetrically arranged, as a kind of preferred implementation, valve seat comprises butterfly spring 8, valve seat pressure ring 7, valve base sealing ring 6, valve seat seat ring 5, butterfly spring 8, valve seat pressure ring 7, valve base sealing ring 6, valve seat seat ring 5 are arranged in order along the direction pointing to corresponding valve ball (valve ball namely closed on), and be provided with soft valve base piece 4 on valve seat seat ring 5, soft valve base piece 4 is sealed and matched with corresponding valve ball 3.This valve base mechanism, when central cavity pressure occurs abnormal, can realize from pressure release, thus ensures that ball valve normally uses, and avoids respective valve pocket pressure anomaly and raises the danger brought.
As another embodiment of the utility model, valve body 1 is provided with a pollutant exhaust hole, pollutant exhaust hole is communicated with lumen by blowdown pressure release passage 14, and pollutant exhaust hole place is provided with foam cock 13, and lumen and blowdown pressure release passage joint are provided with needle-valve 12.Needle-valve 12 and foam cock 13 are with the use of, valve pocket pressure between two valve seats in the middle of valve body of can releasing at any time.
As another embodiment of the utility model, valve gap 2 is threaded with valve body 1, and valve gap 2, by being threaded in valve body 1, can make the structure installment of ball valve more simple like this.
This ball valve is when assembling, first soft valve base piece 4 is bumped in valve seat block 5, again belleville spring 8, valve seat pressure ring 7, valve base sealing ring 6 and valve seat seat ring 5 are loaded in valve body 1 and valve gap 2 successively, valve ball 3 bottom opening coordinates with back shaft 13 to be formed fixes spherical structure, valve rod 9 loads from valve body 1 top, with the groove fit on valve ball 3 top bottom valve rod 9, finally again valve body 1 fills needle-valve 12 and foam cock 13.
This DBB ball valve tool has the following advantages:
1) valve body adopts unitary design, for multi-segment structure, decreases the external leakage point of valve.
2) valve gap screws in valve body with thread connecting mode, installs simple and convenient.
3) fixed valve ball design, operates moment of torsion with floating valve ball less, not easily stuck relatively, uses pressure range wider.
4) valve ball two valve seats separately in both sides can realize inlet seal, provide multiple seal protection.
5) valve ball two valve seats separately in both sides are all the designs from pressure release, avoid respective valve pocket pressure anomaly and raise the danger brought.
6) needle value and foam cock are with the use of, valve pocket pressure between two valve seats in the middle of valve body of can releasing at any time.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (4)
1. a DBB ball-valve structure, it is characterized in that: it comprises the valve body of an integral type, the two ends of described valve body are provided with valve gap, be provided with two valve balls in described valve body, form lumen between two valve balls, the upper end of described valve ball is connected with valve rod, described valve rod stretches out described valve body, the lower end of described valve ball is connected with a back shaft, and described valve rod can drive described valve ball to rotate, and the both sides of described valve ball are provided with valve seat.
2. a kind of DBB ball-valve structure according to claim 1, it is characterized in that: described valve seat comprises butterfly spring, valve seat pressure ring, valve base sealing ring, valve seat seat ring, described butterfly spring, valve seat pressure ring, valve base sealing ring, valve seat seat ring are arranged in order along the direction pointing to corresponding valve ball, described valve seat seat ring is provided with soft valve base piece, and described soft valve base piece and corresponding valve ball are sealed and matched.
3. a kind of DBB ball-valve structure according to claim 1, it is characterized in that: described valve body is provided with a pollutant exhaust hole, described pollutant exhaust hole is communicated with described lumen by blowdown pressure release passage, described pollutant exhaust hole place is provided with foam cock, and described lumen and described blowdown pressure release passage joint are provided with needle-valve.
4. a kind of DBB ball-valve structure according to claim 1, is characterized in that: described valve gap is connected with described valve body screw thread, and described valve gap is by being threaded in described valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520498690.8U CN204729665U (en) | 2015-07-10 | 2015-07-10 | A kind of DBB ball-valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520498690.8U CN204729665U (en) | 2015-07-10 | 2015-07-10 | A kind of DBB ball-valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204729665U true CN204729665U (en) | 2015-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520498690.8U Expired - Fee Related CN204729665U (en) | 2015-07-10 | 2015-07-10 | A kind of DBB ball-valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204729665U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526377A (en) * | 2016-02-18 | 2016-04-27 | 西诺威阀门控制（苏州）有限公司 | DBB valve set structure |
| CN106015624A (en) * | 2016-07-25 | 2016-10-12 | 昆山维萨阀门有限公司 | Self-pressure-release type valve seat and double-ball fixed ball valve |
| CN106015630A (en) * | 2016-07-05 | 2016-10-12 | 武汉长光电源有限公司 | Improved lead valve |
| CN108869780A (en) * | 2018-08-02 | 2018-11-23 | 周忠才 | A kind of monoblock type is double to block double ball-valves |
| CN110440021A (en) * | 2019-08-07 | 2019-11-12 | 西诺威阀门控制（苏州）有限公司 | A kind of high temperature formula DBB fixing ball valve valve group |
| CN112212029A (en) * | 2020-10-28 | 2021-01-12 | 苏州特思克流体控制设备有限公司 | High pressure resistant fluid control equipment |
-
2015
- 2015-07-10 CN CN201520498690.8U patent/CN204729665U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526377A (en) * | 2016-02-18 | 2016-04-27 | 西诺威阀门控制（苏州）有限公司 | DBB valve set structure |
| CN106015630A (en) * | 2016-07-05 | 2016-10-12 | 武汉长光电源有限公司 | Improved lead valve |
| CN106015624A (en) * | 2016-07-25 | 2016-10-12 | 昆山维萨阀门有限公司 | Self-pressure-release type valve seat and double-ball fixed ball valve |
| CN108869780A (en) * | 2018-08-02 | 2018-11-23 | 周忠才 | A kind of monoblock type is double to block double ball-valves |
| CN110440021A (en) * | 2019-08-07 | 2019-11-12 | 西诺威阀门控制（苏州）有限公司 | A kind of high temperature formula DBB fixing ball valve valve group |
| CN112212029A (en) * | 2020-10-28 | 2021-01-12 | 苏州特思克流体控制设备有限公司 | High pressure resistant fluid control equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20170710 |