CN2594562Y - Flat-turning butterfly valves - Google Patents
Flat-turning butterfly valves Download PDFInfo
- Publication number
- CN2594562Y CN2594562Y CN 02251423 CN02251423U CN2594562Y CN 2594562 Y CN2594562 Y CN 2594562Y CN 02251423 CN02251423 CN 02251423 CN 02251423 U CN02251423 U CN 02251423U CN 2594562 Y CN2594562 Y CN 2594562Y
- Authority
- CN
- China
- Prior art keywords
- butterfly plate
- valve
- butterfly
- guiding groove
- valve rod
- 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 - Fee Related
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Abstract
The utility model discloses a flat-turning butterfly valve, which comprises a valve body, a butterfly plate, a valve rod, a valve cap, a transmission structure, a sealing element and an installing element. The utility model is characterized in that the valve rod is composed of an upper valve rod and a lower valve shaft, wherein, the upper part and the lower end of the upper valve rod are respectively provided with a valve rod guiding device and a butterfly plate guiding device, and the upper end of the lower valve shaft is fixed with a butterfly valve bracket. When the valve is opened, the butterfly valve can first disengage from the sealing surface of the valve body and make translational motion and then rotate, and the butterfly valve can rotate to a correct position and then can press and seal with the sealing surface of the valve body when the valve is closed. The utility model having the advantages of reliable sealing performance, long service life and small torque for opening and closing is suitable for bidirectional sealing working condition, etc.
Description
Technical field
The utility model relates to a kind of valve, specifically about a kind of butterfly valve.
Background technique
Butterfly valve is because of it is simple in structure, easy to use, cheap, applicability is strong, and is widely used in the open-close on-off on the various industrial pipelines.At present, butterfly valve by the surface of revolution formula sealing configuration of the extrusion type sealed structural development in the plane in past to two off-centre, three off-centre, has improved working pressure greatly, has reduced open and close torque.But, the butterfly valve of these structures, in opening-closing process the wearing and tearing of sealing surface bigger, in use sealability can descend gradually, even leaks, and product can not normally be used.And for the butterfly valve of two off-centre, three eccentric structures, the specific pressure around its sealing surface is inhomogeneous, makes the sealed force moment of valve very big, the sealing paragraph takes place easily leak.And it oppositely bears pressure generally less than 70% of positive pressure, is not suitable on the pipeline of two way sealed to use.So sealability is unreliable, product working life short, open and close torque is big and can not two way sealed be the major defect that existing butterfly valve product exists.
The model utility content
The purpose of this utility model is the shortcoming that exists at prior art, the flat rotary type butterfly valve that provide that a kind of sealability is reliable, long product lifecycle, open and close torque are little, is applicable to the two way sealed operating mode.
The technological scheme that realizes the utility model purpose comprises valve body, butterfly plate, valve rod, valve gap, drive mechanism, Sealing and assembling set, be shaped on the sealing surface that cooperatively interacts between valve body and the butterfly plate, it is characterized in that valve rod is made up of upper valve rod and lower valve shaft two-part, the top of upper valve rod and lower end are respectively equipped with stem guiding device and butterfly plate guiding device; The stem guiding device is made up of stem guiding groove and guide finger, and the epimere of stem guiding groove is along the valve rod axis direction, and hypomere is along valve rod circumferential surface substantially horizontal; The butterfly plate guiding device is made up of leading truck that is fixed in the upper valve rod lower end and butterfly plate connecting rod, is shaped on butterfly plate guiding groove and the guide finger that cooperatively interacts between leading truck and the butterfly plate connecting rod, and the top bias of this butterfly plate guiding groove is to the butterfly plate direction; The butterfly plate carriage is being fixed in the upper end of lower valve shaft, and butterfly plate is movably arranged on the butterfly plate carriage by the butterfly plate connecting rod, leaves the gap between the right plane of butterfly plate carriage and the left plane of butterfly plate.
In above technological scheme, the perpendicular distance of butterfly plate guiding groove top bias part is less than the perpendicular distance of stem guiding groove epimere, the stem guiding groove from starting point to forwarding perpendicular distance between 90 ° to less than total distance of butterfly plate guiding groove Vertical direction; The horizontal equivalent of butterfly plate guiding groove top bias part is less than the clearance distance between right plane of butterfly plate carriage and the plane, a butterfly plate left side.
The utility model beneficial effect compared with prior art is: top and lower end at upper valve rod are respectively equipped with stem guiding device and butterfly plate guiding device, in the valve opening process, upper valve rod is under the effect of stem guiding device, do ascending motion earlier, and then 90 ° of rotations, butterfly plate is done earlier to break away from the translational motion of valve body sealing surface direction under the effect of butterfly plate guiding device simultaneously, follows upper valve rod then and does 90 ° of rotations.In the valve closing process, upper valve rod and butterfly plate be the while half-twist earlier, and upper valve rod is made downward motion then, and butterfly plate compresses motion to the valve body sealing surface direction do translation.Realized in the valve opening process, butterfly plate breaks away from valve body sealing surface earlier and rotates, in the valve closing process, the nothing friction that compresses sealing after butterfly plate is rotated in place earlier again opens and closes, and the seal pressure around between butterfly plate sealing surface and the valve body sealing surface is even, the reverse pressure-bearing performance is good, has that sealability is reliable, long product lifecycle, open and close torque are little, be applicable to advantage such as two way sealed operating mode.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model.
Fig. 2 is the structural representation of A-A direction among the utility model Fig. 1.
Embodiment
Flat rotary type butterfly valve as shown in Figure 1 comprises valve body 1, butterfly plate 2, valve rod, valve gap 10, drive mechanism, Sealing and assembling set.Be shaped on the sealing surface that cooperatively interacts between valve body 1 and the butterfly plate 2, valve rod is made up of upper valve rod 9 and lower valve shaft 3 two-part, and the top of upper valve rod 9 and lower end are respectively equipped with stem guiding device and butterfly plate guiding device.The stem guiding device is made up of stem guiding groove 11 and guide finger 12, and the epimere of stem guiding groove 11 is along the axial direction of valve rod 9, and hypomere is along valve rod 9 circumferential surface substantially horizontals.The butterfly plate guiding device is made up of leading truck 6 that is fixed in valve rod 9 lower ends and butterfly plate connecting rod, is shaped on the butterfly plate guiding groove 7 and the guide finger 8 that cooperatively interact between leading truck 6 and the butterfly plate connecting rod, and the top bias of this butterfly plate guiding groove 7 is to butterfly plate 2 directions.Butterfly plate carriage 5 is being fixed in the upper end of lower valve shaft 3, and butterfly plate 2 is movably arranged on the butterfly plate carriage 5 by the butterfly plate connecting rod, leaves the gap between the right plane of butterfly plate carriage 5 and the left plane of butterfly plate 2.
The perpendicular distance of butterfly plate guiding groove 7 top bias parts is less than the perpendicular distance of stem guiding groove 11 epimeres, and butterfly plate 2 compresses seal distance when making valve closing.Stem guiding groove 11 to forwarding perpendicular distance between 90 ° to less than total distance of butterfly plate guiding groove 7 Vertical direction, guarantees that butterfly plate 2 can 90 ° of unlatchings from starting point.The horizontal equivalent of butterfly plate guiding groove 7 top bias parts is less than the clearance distance between butterfly plate carriage 5 right planes and the butterfly plate 2 left planes, and valve rod 9 can continue to rise to guarantee to put butterfly plate 2 translations afterwards in place.
Stem guiding groove 11 hypomeres are along valve rod 9 circumferential surface clockwise direction to 90 ° positions, and the left and right sides is symmetrical arranged, and guide finger 12 is fixed on the valve gap 10.Leading truck 6 is fixed in the lower end of valve rod 9 by fixing pin 14, and the butterfly plate connecting rod passes in the middle of the leading truck 6, and butterfly plate guiding groove 7 activities made on the guide finger 8 of its both sides and the leading truck 6 cooperate.Butterfly plate carriage 5 is by flat key 4 and lower valve shaft 3 radial locations, and by screw 13 and lower valve shaft 3 axial restraints, axial restraint is connected between lower valve shaft 3 and the valve body 1, and radially flexible connection.Also can adopt annular key to realize axial restraint between butterfly plate carriage 5 and the lower valve shaft 3, and radially movable the cooperation between the two, at this moment can adopt between lower valve shaft 3 and the valve body 1 and fixedly connected.
Its working procedure is: when valve opening, valve rod 9 is under the control of stem guiding groove 11 epimere vertical components and guide finger 12, drive leading truck 6 and move up, simultaneously, butterfly plate 2 under butterfly plate guiding groove 7 tops and guide finger 8 controls to away from valve body 1 direction translation.When valve rod 9 rose to stem guiding groove 11 hypomeres and cooperates with guide finger 12, valve rod 9 drove leading trucks 6, butterfly plate carriage 5 and butterfly plate 2 and begins rotation, until forwarding 90 ° of fully open positions to.When valve closing, valve rod 9 drives leading truck 6, butterfly plate carriage 5 and butterfly plate 2 rotations under the control of stem guiding groove 11 hypomeres and guide finger 12, when forwarding 90 ° to, the epimere of stem guiding groove 11 cooperates with guide finger 12, make valve rod 9 drive leading truck 6 and move up, at this moment, butterfly plate 2 is under butterfly plate guiding groove 7 tops and guide finger 8 controls, to valve body 1 direction translation, until sealing with valve body 1 sealing surface compact.Butterfly plate 2 rotates after breaking away from valve body sealing surface earlier when having realized valve opening, compresses the working procedure of sealing after butterfly plate 2 is rotated in place earlier during valve closing again with valve body sealing surface.
Claims (5)
1, a kind of flat rotary type butterfly valve, comprise valve body (1), butterfly plate (2), valve rod, valve gap (10), drive mechanism, Sealing and assembling set, be shaped on the sealing surface that cooperatively interacts between valve body (1) and the butterfly plate (2), it is characterized in that valve rod is made up of upper valve rod (9) and lower valve shaft (3) two-part, the top of upper valve rod (9) and lower end are respectively equipped with stem guiding device and butterfly plate guiding device; The stem guiding device is made up of stem guiding groove (11) and guide finger (12), and the epimere of stem guiding groove (11) is along the valve rod axis direction, and hypomere is along valve rod circumferential surface substantially horizontal; The butterfly plate guiding device is made up of the leading truck (6) and the butterfly plate connecting rod that are fixed in upper valve rod (9) lower end, be shaped on the butterfly plate guiding groove (7) and the guide finger (8) that cooperatively interact between leading truck (6) and the butterfly plate connecting rod, the top bias of this butterfly plate guiding groove (7) is to the butterfly plate direction; Butterfly plate carriage (5) is being fixed in the upper end of lower valve shaft (3), and butterfly plate (2) is movably arranged on the butterfly plate carriage (5) by the butterfly plate connecting rod, leaves the gap between the right plane of butterfly plate carriage (5) and the left plane of butterfly plate.
2, flat rotary type butterfly valve according to claim 1, it is characterized in that the perpendicular distance of the perpendicular distance of butterfly plate guiding groove (7) top bias part less than stem guiding groove (11) epimere, stem guiding groove (11) from starting point to forwarding perpendicular distance between 90 ° to less than total distance of butterfly plate guiding groove (7) Vertical direction; The horizontal equivalent of butterfly plate guiding groove (7) top bias part is less than the clearance distance between right plane of butterfly plate carriage (5) and the left plane of butterfly plate (2).
3, flat rotary type butterfly valve according to claim 1 and 2, it is characterized in that butterfly plate carriage (5) is by flat key (4) and lower valve shaft (3) radial location, by screw (13) and lower valve shaft (3) axial restraint, axial restraint is connected radially flexible connection between lower valve shaft (3) and the valve body (1).
4, flat rotary type butterfly valve according to claim 1 and 2 is characterized in that adopting between butterfly plate carriage (5) and the lower valve shaft (3) the annular key axially locating, radially movable the cooperation.
5, flat rotary type butterfly valve according to claim 1 and 2 is characterized in that leading truck (6) fixedlyed connected by fixing pin (14) with the lower end of valve rod (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02251423 CN2594562Y (en) | 2002-12-03 | 2002-12-03 | Flat-turning butterfly valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02251423 CN2594562Y (en) | 2002-12-03 | 2002-12-03 | Flat-turning butterfly valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2594562Y true CN2594562Y (en) | 2003-12-24 |
Family
ID=33721284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02251423 Expired - Fee Related CN2594562Y (en) | 2002-12-03 | 2002-12-03 | Flat-turning butterfly valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2594562Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363660C (en) * | 2004-07-23 | 2008-01-23 | 湖南泵阀制造有限公司 | Portable double-sealing rotating cutting valve |
| CN108138970A (en) * | 2015-08-05 | 2018-06-08 | 芙罗服务管理公司 | Axial seal butterfly valve |
| CN108916398A (en) * | 2018-09-20 | 2018-11-30 | 江苏神通阀门股份有限公司 | A kind of double-acting friction-free butterfly valve |
| CN110307349A (en) * | 2019-07-11 | 2019-10-08 | 无锡市爱德阀业股份有限公司 | A kind of anti-down streaming butterfly valve |
-
2002
- 2002-12-03 CN CN 02251423 patent/CN2594562Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363660C (en) * | 2004-07-23 | 2008-01-23 | 湖南泵阀制造有限公司 | Portable double-sealing rotating cutting valve |
| 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 |
| CN108916398A (en) * | 2018-09-20 | 2018-11-30 | 江苏神通阀门股份有限公司 | A kind of double-acting friction-free butterfly valve |
| CN110307349A (en) * | 2019-07-11 | 2019-10-08 | 无锡市爱德阀业股份有限公司 | A kind of anti-down streaming butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |