CN201747946U - Micropower-opened butterfly valve - Google Patents
Micropower-opened butterfly valve Download PDFInfo
- Publication number
- CN201747946U CN201747946U CN2010205217727U CN201020521772U CN201747946U CN 201747946 U CN201747946 U CN 201747946U CN 2010205217727 U CN2010205217727 U CN 2010205217727U CN 201020521772 U CN201020521772 U CN 201020521772U CN 201747946 U CN201747946 U CN 201747946U
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- valve
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- plate
- valve rod
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Abstract
The utility model relates to a micropower-opened butterfly valve, which belongs to the technical field of valves, aims to provide a butterfly valve generating no friction force when opened and closed and having small opening resistance and adopts the technical scheme that: the micropower-opened butterfly valve comprises a valve body, a valve rod, a valve plate, a valve-body sealing ring and a valve-plate sealing ring, wherein a cam is sleeved on the valve rod, the cam is embedded in a cam supporting seat, the bottom plane of the cam supporting seat is connected with the plane of the valve plate, the cam and the inner cavity wall of the cam supporting seat are connected through sliding contact, and the offset of the cam is designed to be that the bottom of the valve plate is hermitically contacted with the valve body when the highest point of the cam is rotated to the connecting-line position of the center of the valve rod and the plane of the valve plate. The utility model has artful design concept, replaces an original transmission device with a simple cam rotating structure, solves the long-term puzzled difficult problems existing in the design and the manufacture of the butterfly valve and obtains an unexpected good accident, and the variable-torque micropower-opened butterfly valve developed by the utility model creates a bran-new structure after a second generation of triple-eccentric butterfly valves and has great development space and expansion value.
Description
Technical field
The utility model relates to a kind of eccentric-butterfly-valve, belongs to valve technology field.
Background technique
Butterfly valve is a kind of in numerous valves, has a wide range of applications in industrial production.Along with the needs of industrial development, valve aperture and nominal pressure constantly increase, and have run into many impassable obstacles, are restricting the development and use of valve, and detent torque is greatly the biggest problem that seal butterfly valve faced.
Valve plays a part blocking-up and opens and regulate rate-of flow in pipeline, in order to guarantee the valve reliability of operation, require the valve plate of valve and the valve rod must be reliable, and the switch adjusting is accurate.Not being afraid of the dirt gas-liquid simultaneously impacts, pollutes.So valve body and valve board structure all are rigid connections.This structure has just formed that valve is in service can't to change a difficult problem---permanent torque, and that uses in producing at present zero reveals butterfly valve, and valve plate and valve rod all are rigidly connected basically, have formed the permanent torque that can't change.
Because the permanent torque of butterfly valve valve, make valve valve plate and valve base sealing in switching process secondary contact and break away from produced bigger frictional force in a flash, this has bigger opening resistance when just causing Open valve, need bigger the turning on the power of configuration, thereby the transmission device volume of butterfly valve is big, complex structure, production process are many.
The Another reason of the frictional force that produces during valve open is, though valve plate and valve rod turn round simultaneously during valve open, the valve plate small end follows up into sealing pair along the valve rod sense of rotation.But the resiliently deformable of valve integrating error and movable agency in working process, valve plate produces skew in sealing pair, and it is dark more that valve plate enters valve seat, and valve plate is big more to the pressure of sealing pair, thereby has produced bigger frictional force.This situation comprises in recent years zero sealing three eccentric butterfly valve of exploitation, though overcome the sliding-frictional resistance of switching process, but still when can't resolve valve open, valve plate enters the displacement, the creep that are produced behind the valve seat and produces friction, forms the excessive valve resistance of opening.
In order to change this situation, how a lot of experts and technician in bite on way for this reason, make sealing pair leave when suiting, for vertical movement do not do to slide mutually produce friction.But up to now, do not propose technological scheme preferably, it need bigger turning on the power be a difficult problem that perplexs in current butterfly valve design and the making that butterfly valve is opened always, demands urgently solving.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of micro power opened butterfly valve, this butterfly valve can not slide mutually when opening and closing and produce frictional force, therefore opening resistance is very little, and turning on the power of needing is low, solves current butterfly valve design and makes a medium-term and long-term difficult problem that exists.
The technological scheme that solves the problems of the technologies described above is:
A kind of micro power opened butterfly valve, it comprises valve body, valve rod, valve plate, valve seals and valve plate seal ring is arranged respectively on valve body and valve plate, its improvements are, on valve rod, be set with cam, cam is embedded in the cam bearer, the bottom plane of cam bearer is connected with the valve plate plane, and cam is that sliding contact is connected with the cam bearer internal chamber wall, and the valve plate bottom contacted with valve seal when the offset of cam was designed to the cam peak and turns to the valve rod center with valve plate plane link position.
Above-mentioned micro power opened butterfly valve, described cam and cam bearer are two covers, lay respectively at valve rod two ends up and down, cam bearer is installed on the valve plate respectively.
Above-mentioned micro power opened butterfly valve is equipped with leaf spring between described valve rod and the valve plate, and the leaf spring two ends contact with the valve plate plane, and the leaf spring middle part is sleeved on the valve rod by spring block.
Above-mentioned micro power opened butterfly valve has dust-proof cover on the described valve plate, and valve rod is positioned at dust-proof cover.
Usefulness of the present utility model is:
(1) valve plate is a vertical movement in valve seat in the valve closing process, has overcome the surface friction drag that causes when sealing surface slides in the running;
(2) vertical movement of valve plate overcome valve plate in valve seat because valve rod and valve plate creep produce sliding-frictional resistance;
(3) the valve plate vertical movement is realized by the cam twisting, this twisting be not originally fixedly arm of force pulling valve plate open the ground resistance, but the throw of eccentric between valve rod center and cam center is the rotary action of the arm of force, significantly reduced opening resistance, also significantly reduced needed turning on the power, only be equivalent to have remarkable economic efficiency with 1/4 of diameter valve opening power;
(4) the utility model mentality of designing is ingenious, replaced original transmission device with simple cam rotation structure, solved a difficult problem that exists in long-term puzzlement butterfly valve design and the making, obtained beyond thought good result, the variable force square micro power opened butterfly valve that the utility model is developed has been started a kind of brand-new structure after the second generation three eccentric butterfly valve, has huge development space and development value.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1.
Mark is as follows among the figure: valve body 1, valve rod 2, valve plate 3, valve seals 4, valve plate seal ring 5, cam 6, cam bearer 7, leaf spring 8, spring block 9, dust-proof cover 10.
Embodiment
Show among the figure that the designed micro power opened butterfly valve of the utility model still designs according to two eccentric-butterfly-valves, comprises valve body 1, valve rod 2, valve plate 3, sealing pair is made up of valve seals 4 and valve plate seal ring 5 in the side at valve body 1.
Show among the figure, inventive point of the present utility model is to be set with cam 6 on valve rod 2, cam 6 is embedded in the cam bearer 7, the bottom plane of cam bearer 7 is connected with the plane of valve plate 3, cam 6 is that sliding contact is connected with cam bearer 7 internal chamber walls, and cam 6 can drive cam bearer 7 motions when rotating under valve rod 2 drives, because cam bearer 7 is connected with valve plate 3, then valve plate 3 is realized moving up and down under the drive of cam bearer 7, promptly realizes opening and closing.Above-mentioned protruding 6 take turns with cam bearer 7 be two covers, about in the of 2 two ends to lay respectively at valve rod, cam bearer 7 is installed in respectively on the valve plate 3.
Be to realize closing closely of valve plate 3, the offset of cam 6 is designed to key, and valve plate 3 bottoms seal with valve body 1 and contact in the time of making cam 6 peaks turn to valve rod 2 centers and valve plate 3 plane link position.At this moment valve rod 2 centers and cam 6 centre distance are that the offset and the default axle of the valve deviator of 2 of valve body 1 and valve rods is consistent.
Show among the figure that between valve rod 2 and valve plate 3 leaf spring 8 is installed, leaf spring 8 middle parts are sleeved on the valve rod 2 by spring block 9, leaf spring 8 two ends are against on valve plate 3 planes.The effect of leaf spring 8 is to make valve plate 3 be in stable status in valve body 1.
Show among the figure that dust-proof cover 10 is arranged on the valve plate 1, valve rod 2, cam 6, cam bearer 7, leaf spring 8, spring block 9 all are positioned at dust-proof cover 10.
The action and the function of this micro power opened butterfly valve of the present utility model are as follows:
(1) valve closing.Valve actuator drives valve rod 2 revolutions, and valve rod 2 drives valve plate 3 revolutions by cam bearer 7 and leaf spring 8.During valve plate 3 preadmission positions, possess 0 .5 mm clearance between valve seals 4 and the valve plate seal ring 5.Transmission device is rotated further, and valve plate 3 forces valve plate 3 to do vertical movement by cam bearer 7 under cam 6 effects that valve rod 2 connects, and inlet valve body seal ring 4 is up to finishing sealing.Because this is crossed and only closes translation and compress, and does not have any friction, it closes moment is throw of eccentric between valve rod center and cam center, and the whole pass of valve closed procedure is in contactless state.
(2) valve open.Valve plate 3 is subjected to valve rod 2 rotating force arm driving action, promptly the throw of eccentric by valve rod center and cam center transmits torque reaction, transmission device turns round in the other direction, cam 6 revolutions, force valve plate 3 to break away from valve seals 4, leaf spring 8 energy discharge and reset, and valve plate 3 returns to normal, and continue revolution up to all opening.This valve adopts the variable arm of force, reduces the resistance of opening valve greatly.The effect of leaf spring 8 has guaranteed the steady state of valve plate 3 in valve body 1.
(3) function.Valve rod 2 arm of forces, promptly the valve rod center has variability to valve plate 3 distances, can be changed into the throw of eccentric of valve rod center and cam, for valve open and pass valve process have played key effect.Arrive or break away from valve seals 4 in a flash at valve plate 3, the surface friction drag of valve plate 3 operation process has been eliminated in the throw of eccentric effect of valve rod cam 6, the variability of its arm of force has changed the open and close valve and has produced permanent torque in a flash, arm of force variable ratio is between the 1:6, has alleviated the moment of switch valve greatly.If with DN600 type butterfly valve is example, it disposes power, compares with diameter valve switch power with of the present utility model, and this case only is equivalent to 14% of initial moment.Even compare with up-to-date three eccentric butterfly valve, its valve opening force square also has only its 17%, and this structure has played one and referred to dial very heavy effect in the switch of valve is crossed.
Claims (4)
1. micro power opened butterfly valve, it comprises valve body [1], valve rod [2], valve plate [3], valve seals [4] and valve plate seal ring [5] are arranged respectively on valve body [1] and valve plate [3], it is characterized in that: on valve rod [2], be set with cam [6], cam [6] is embedded in the cam bearer [7], the bottom plane of cam bearer [7] is connected with the valve plate plane, cam [6] is that sliding contact is connected with cam bearer [7] internal chamber wall, and valve plate [3] bottom sealed with valve body [1] and contacts when the offset of cam [6] was designed to cam [6] peak and turns to the valve rod center with valve plate plane link position.
2. micro power opened butterfly valve according to claim 1 is characterized in that: described cam [6] and cam bearer [7] are two covers, lay respectively at valve rod [2] two ends up and down, and cam bearer [7] is installed in respectively on the valve plate [3].
3. micro power opened butterfly valve according to claim 2 is characterized in that: between described valve rod [2] and the valve plate [3] leaf spring [8] is installed, leaf spring [8] two ends contact with the valve plate plane, and leaf spring [8] middle part is sleeved on the valve rod [2] by spring block [9].
4. micro power opened butterfly valve according to claim 2 is characterized in that: dust-proof cover [10] is arranged on the described valve plate [3], and valve rod [2] is positioned at dust-proof cover [10].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205217727U CN201747946U (en) | 2010-09-08 | 2010-09-08 | Micropower-opened butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205217727U CN201747946U (en) | 2010-09-08 | 2010-09-08 | Micropower-opened butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747946U true CN201747946U (en) | 2011-02-16 |
Family
ID=43582624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205217727U Expired - Fee Related CN201747946U (en) | 2010-09-08 | 2010-09-08 | Micropower-opened butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108138970A (en) * | 2015-08-05 | 2018-06-08 | 芙罗服务管理公司 | Axial seal butterfly valve |
-
2010
- 2010-09-08 CN CN2010205217727U patent/CN201747946U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108138970A (en) * | 2015-08-05 | 2018-06-08 | 芙罗服务管理公司 | Axial seal butterfly valve |
| CN108138970B (en) * | 2015-08-05 | 2020-09-01 | 芙罗服务管理公司 | Axial sealing butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHIJIAZHUANG CHANGHONG VALVE CO., LTD. Free format text: FORMER OWNER: ZHAO PINGLI Effective date: 20121122 Free format text: FORMER OWNER: ZHANG DESHAN Effective date: 20121122 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121122 Address after: 050061 No. 238, No. 2 West Ring Road, Hebei, Shijiazhuang Patentee after: Shijiazhuang Changhong Valve Co., Ltd. Address before: 050061 Hebei province Shijiazhuang North Ring Road No. 238 Shijiazhuang Changhong Valve Co. Ltd. Patentee before: Zhao Pingli Patentee before: Zhang Deshan |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20150908 |
|
| EXPY | Termination of patent right or utility model |