CN205101575U - Tri -eccentric hard seal butterfly valve - Google Patents
Tri -eccentric hard seal butterfly valve Download PDFInfo
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- CN205101575U CN205101575U CN201520860489.XU CN201520860489U CN205101575U CN 205101575 U CN205101575 U CN 205101575U CN 201520860489 U CN201520860489 U CN 201520860489U CN 205101575 U CN205101575 U CN 205101575U
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- platen
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Abstract
The utility model provides a tri -eccentric hard seal butterfly valve relates to a valve technical field. The utility model discloses a vice including dish board, valve rod center circle, movive seal, dish board center department upper end is provided with the arc structure, and dish board center department lower extreme is provided with down the arc structure, goes up that to be provided with the valve rod between arc structure and the lower arc structure central round, and the both ends of dish board are connected with movive seal sub phase respectively. The utility model discloses the sealed rotation center who simulates optimization to current sealing technique can effectively improve sealed vice efficiency, reduces friction and owing to the damage that rubs and produce, has reduced the requirement to the material, saves manufacturing cost, greatly the tri -eccentric hard seal butterfly valve's of improvement efficiency and effect.
Description
Technical field
The utility model relates to a kind of valve technology field, particularly relates to a kind of three eccentricity hard seal butterfly valve.
Background technique
In the Seal Design of three eccentric butterfly valve, mainly through calculating the position determining butterfly plate rotating center, these computational methods determine the scope of rotating center, according to practical application determination rotating center, the central position now determined, in valve body opening-closing process, still can there is part area and interfere, sealing surface friction and the excessive phenomenon of operational torque all can reduce the life-span of valve seat.The sealing effect improving sealing pair reduces operational torque with when interfering, need the position determining rotating center more accurately, now just need the determination carrying out best rotating center according to computational analysis and simulation policy, the best rotating center that application simulation analysis optimization is determined can effectively solve the problem.
Model utility content
For the deficiency existed in the problems referred to above, the utility model provides a kind of three eccentricity hard seal butterfly valve, make it effectively can improve the efficiency of sealing pair for the seal rotary center that existing sealing technique carries out simulative optimization, reduce friction and due to fricative damage, decrease the requirement to material, save cost of production, the efficiency of the three eccentricity hard seal butterfly valve greatly improved and effect.
In order to solve the problem, the utility model provides a kind of three eccentricity hard seal butterfly valve, wherein, comprise dish plate, valve rod center circle, motive sealing pair, upper end, described dish plate center is provided with arcuate structure, lower end, described dish plate center is provided with arc lower structure, is provided with valve rod center circle between described upper arcuate structure and described arc lower structure, and the two ends of described dish plate are connected with described motive sealing parafacies respectively.
Preferably, described motive sealing pair comprises the first motive sealing pair and the second motive sealing pair, described first motive sealing pair comprises the first valve seals and the first butterfly plate seal ring, described first butterfly plate seal ring is positioned at described dish plate left end bottom end, described first valve seals is positioned at the left end of described first dish plate seal ring, described second motive sealing pair comprises the second valve seals and the second butterfly plate seal ring, described second butterfly plate seal ring is positioned at described dish plate right-hand member bottom end, and described second valve seals is positioned at the right-hand member of described second dish plate seal ring.
Preferably, described dish plate comprises the first dish plate and the second dish plate, described first dish plate and all curved structure of described second dish plate, the bottom of described first dish plate is provided with described first motive sealing pair, and the bottom of described second dish plate is provided with described second motive sealing pair.
Preferably, described first valve seals is arranged on the first platen, and described first platen is arranged on the first body base, and described first platen is fixedly connected with described first valve body by platen screw.
Preferably, described second valve seals is arranged on the second platen, and described second platen is arranged on the second body base, and described second platen is fixedly connected with described second valve body by platen screw.
Preferably, described first butterfly plate seal ring is fixedly connected with described first dish plate by fastening screw trip bolt, and described second butterfly plate seal ring is fixedly connected with described second dish plate by fastening screw trip bolt.
Preferably, described first valve seals upper-end surface is provided with the first sealed graphite bed course, and described second valve seals upper-end surface is provided with the second sealed graphite bed course.
Compared with prior art, the utility model has the following advantages:
The utility model accurately determines the rotating center of three eccentricity hard seal butterfly valve, the friction between butterfly plate sealing surface and valve seat and interference can be reduced, reduce the resistance between fluid and operational torque, improve sealing therebetween, the position optimizing three eccentricity hard seal butterfly valve rotating center had both improve the leakage efficiency of valve body, turn increase the working life of valve body and valve seat, optimize allomeric function.
Accompanying drawing explanation
Fig. 1 is example structure schematic diagram of the present utility model;
Fig. 2 is embodiment's movement locus schematic diagram of the present utility model;
Fig. 3 is the A place structure enlarged diagram of Fig. 2;
Fig. 4 is the B place structure enlarged diagram of Fig. 2.
Primary component symbol description:
Arcuate structure on 1-first dish plate 2-second dish plate 3-
4-arc lower structure 5-valve rod center circle 6-first butterfly plate seal ring
7-first valve seals 8-second platen 9-platen screw
10-fastening screw trip bolt 11-first sealed graphite bed course 12-second sealed graphite bed course
13-first valve body 14-second valve body
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with accompanying drawing and example, the utility model is described in further detail, but example is not as to restriction of the present utility model.
As shown in Figures 1 to 4, embodiment of the present utility model comprises dish plate, valve rod center circle 5, motive sealing pair, upper end, dish plate center is provided with arcuate structure 3, lower end, dish plate center is provided with arc lower structure 4, be provided with valve rod center circle 5 between upper arcuate structure 3 and arc lower structure 4, the two ends of dish plate are connected with motive sealing parafacies respectively.
Motive sealing pair comprises the first motive sealing pair and the second motive sealing pair, first motive sealing pair comprises the first valve seals 7 and the first butterfly plate seal ring 6, first butterfly plate seal ring 6 is positioned at dish plate left end bottom end, first valve seals 7 is positioned at the left end of the first dish plate seal ring 6, second motive sealing pair comprises the second valve seals and the second butterfly plate seal ring, second butterfly plate seal ring is positioned at dish plate right-hand member bottom end, and the second valve seals is positioned at the right-hand member of the second dish plate seal ring.
Dish plate comprises the first dish plate 1 and the second dish plate 2, first dish plate 1 and all curved structure of the second dish plate 2, and it is secondary that the bottom of the first dish plate 1 is provided with the first motive sealing, and it is secondary that the bottom of the second dish plate 2 is provided with the second motive sealing.
First valve seals 7 is arranged on the first platen, and the first platen is arranged on bottom the first valve body 13, and the first platen is fixedly connected with the first valve body 13 by platen screw 9; Second valve body 14 seal ring is arranged on the second platen 8, and the second platen 8 is arranged on bottom the second valve body 14, and the second platen 8 is fixedly connected with the second valve body 14 by platen screw 9.
First butterfly plate seal ring 6 is fixedly connected with the first dish plate 1 by fastening screw trip bolt 10, and the second butterfly plate seal ring is fixedly connected with the second dish plate 2 by fastening screw trip bolt 10.First valve seals upper-end surface is provided with the first sealed graphite bed course 11, second valve seals upper-end surface and is provided with the second sealed graphite bed course 12.
In the present embodiment, in three eccentricity hard seal butterfly valve opening-closing process, there is the pressure difference that fluid produces in the both sides due to the motive sealing pair at valve seals and butterfly plate seal ring composition, therefore the frictional force of sealing pair and the increase of valve rod moment of torsion can be caused, in order to reduce friction and open and close moment, can by calculating and simulate adjustment e, the position of the determined rotating center of c value, make fluid more even by the flow of valve body both sides, reduce the sealing pair pressure difference of both sides, thus comparatively less friction and operational torque, reach the object of valve body structure performance optimization.
In traditional three eccentricity calculates, calculate the Production Zones Suitable of rotating center, in order to the performance improving butterfly valve then needs to optimize and accurate rotating center position.On the basis calculating rotation center region, designing and calculating also can draw the three-view diagram of valve seals in sealing pair, and can point out in ellipse short shaft inclined-plane and make vertical line, because ellipse short shaft inclined-plane is symmetrical about major axis, therefore two vertical lines intersect at same point, this point is to the distance on valve seals ground, even if can as determining the reference point optimizing rotating center, because ellipse short shaft mid point crosses sealing pair neutral surface, therefore this kind of reference two vertical lines intersect at same point to the distance on valve seals ground reconnaissance more accurately and comprehensively, representativeness is had more to seal parameters.
Determine that the distance value of reference reconnaissance is for reference with above-mentioned, can determine that valve body is with reference to rotating center, because in the opening-closing process of valve body, the track of butterfly plate seal ring major axis two angle point α and β is passed by whole sealing pair, opens with the place plane of these 2 representatives frictional force and the operational torque that rate can affect sealing pair.At α and β place, the trajectory of two angle points and sealing surface angulation, work as α
1and β
1, α
2and β
2rate of opening close to time, namely represent and throw off rate uniform, in valve body opening-closing process, fluid is more even by the flow of valve body both sides, and the pressure difference of both sides is less, and therefore frictional force and operational torque will be less.Therefore, on the basis with reference to C value determined with neutral surface, suitable adjusted design C value and e value, make α
1and β
1, α
2and β
2value close to time, valve body has optimum opens rate, and both avoided the interference damage of sealing pair, sealing can be made again to reach best, and frictional force and operational torque reduce, and substantially increase again the life-span of valve seat, reduce the restriction to material simultaneously.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a three eccentricity hard seal butterfly valve, it is characterized in that, comprise dish plate, valve rod center circle, motive sealing pair, upper end, described dish plate center is provided with arcuate structure, lower end, described dish plate center is provided with arc lower structure, be provided with valve rod center circle between described upper arcuate structure and described arc lower structure, the two ends of described dish plate are connected with described motive sealing parafacies respectively.
2. three eccentricity hard seal butterfly valve as claimed in claim 1, it is characterized in that, described motive sealing pair comprises the first motive sealing pair and the second motive sealing pair, described first motive sealing pair comprises the first valve seals and the first butterfly plate seal ring, described first butterfly plate seal ring is positioned at described dish plate left end bottom end, described first valve seals is positioned at the left end of described first dish plate seal ring, described second motive sealing pair comprises the second valve seals and the second butterfly plate seal ring, described second butterfly plate seal ring is positioned at described dish plate right-hand member bottom end, described second valve seals is positioned at the right-hand member of described second dish plate seal ring.
3. three eccentricity hard seal butterfly valve as claimed in claim 2, it is characterized in that, described dish plate comprises the first dish plate and the second dish plate, described first dish plate and all curved structure of described second dish plate, the bottom of described first dish plate is provided with described first motive sealing pair, and the bottom of described second dish plate is provided with described second motive sealing pair.
4. three eccentricity hard seal butterfly valve as claimed in claim 3, it is characterized in that, described first valve seals is arranged on the first platen, and described first platen is arranged on the first body base, and described first platen is fixedly connected with described first valve body by platen screw.
5. three eccentricity hard seal butterfly valve as claimed in claim 4, it is characterized in that, described second valve seals is arranged on the second platen, and described second platen is arranged on the second body base, and described second platen is fixedly connected with described second valve body by platen screw.
6. three eccentricity hard seal butterfly valve as claimed in claim 5, it is characterized in that, described first butterfly plate seal ring is fixedly connected with described first dish plate by fastening screw trip bolt, and described second butterfly plate seal ring is fixedly connected with described second dish plate by fastening screw trip bolt.
7. three eccentricity hard seal butterfly valve as claimed in claim 6, it is characterized in that, described first valve seals upper-end surface is provided with the first sealed graphite bed course, and described second valve seals upper-end surface is provided with the second sealed graphite bed course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860489.XU CN205101575U (en) | 2015-10-31 | 2015-10-31 | Tri -eccentric hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860489.XU CN205101575U (en) | 2015-10-31 | 2015-10-31 | Tri -eccentric hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205101575U true CN205101575U (en) | 2016-03-23 |
Family
ID=55517357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520860489.XU Active CN205101575U (en) | 2015-10-31 | 2015-10-31 | Tri -eccentric hard seal butterfly valve |
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| Country | Link |
|---|---|
| CN (1) | CN205101575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930799A (en) * | 2018-09-07 | 2018-12-04 | 巴顿阀门（杭州）有限公司 | Double eccentric butterfly valve |
-
2015
- 2015-10-31 CN CN201520860489.XU patent/CN205101575U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930799A (en) * | 2018-09-07 | 2018-12-04 | 巴顿阀门（杭州）有限公司 | Double eccentric butterfly valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |