CN205956409U - Triple -eccentric butterfly valve - Google Patents
Triple -eccentric butterfly valve Download PDFInfo
- Publication number
- CN205956409U CN205956409U CN201620829476.0U CN201620829476U CN205956409U CN 205956409 U CN205956409 U CN 205956409U CN 201620829476 U CN201620829476 U CN 201620829476U CN 205956409 U CN205956409 U CN 205956409U
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- China
- Prior art keywords
- valve
- butterfly
- butterfly plate
- eccentric
- inner edge
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Abstract
The utility model discloses a triple -eccentric butterfly valve, including valve body, valve rod and butterfly plate, be provided with the disk seat in the valve body, wherein: the sealed facial features of disk seat is eccentric to the inner chamber of valve body, outer fringe and inner edge are drawn together to the sealed bread of disk seat, outer fringe and inner edge all are circular and crossing on the plane of perpendicular and valve body inner chamber axis, the line perpendicular to valve rod in the centre of a circle of outer fringe and the centre of a circle of inner edge, at outer fringe and inner edge at a distance of nearest one side, the butterfly plate inboard is provided with rolls out the chamfer, at outer fringe and inner edge at a distance of one side the farthest away, the butterfly plate outside is provided with fixed chamfer, through the setting, realize the unidirectional rotating of butterfly plate, unidirectional rotating's butterfly plate is convenient for to the control of butterfly valve, when utilizing device such as turbine to valve rod driven, confirm that sealed position is more difficult, directly adopt the mode of butterfly plate and disk seat conflict locking, location butterfly plate that can be accurate, facilitation of operation, the gap of contact is littleer between butterfly plate and the disk seat simultaneously, sealing performance is stronger.
Description
Technical field
This utility model is related to a kind of butterfly valve, particularly to a kind of three-eccentric-butterfly-valve.
Background technology
At present, the Chinese patent of Publication No. CN200952574 discloses a kind of three-eccentric-butterfly-valve, including valve body, installation
It is located at, in the valve rod on valve body, by valve rod is fixing, the butterfly plate can rotate around valve rod in the valve pocket of valve body, and be located at valve pocket mouth
Valve seat, the sealing surface of described butterfly plate has U-shaped annular groove, and U-shaped annular groove is embedded with soft sealing ring.At any position of U-shaped annular groove
Kernel of section line be each perpendicular to the sealing surface of butterfly plate.
But the rotation direction of this butterfly valve can be with Double-directional rotary, when being adjusted using motor screw it is difficult to control locking position
Put it is not easy to operate.
Utility model content
The purpose of this utility model is to provide a kind of three-eccentric-butterfly-valve be easy to and operate.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of three-eccentric-butterfly-valve,
Including valve body, valve rod and butterfly plate, it is provided with valve seat in described valve body, wherein：The sealing surface of described valve seat is with respect in valve body
Chamber is eccentric, and the sealing surface of described valve seat includes outer rim and inner edge, and described outer rim and inner edge be all circle and in vertical and valve body
Intersecting in the plane of cavity axis, the line in the center of circle of described outer rim and the center of circle of inner edge perpendicular to valve rod, in outer rim and inner edge phase
Away from nearest side, it is provided with inside butterfly plate and produces chamfering, in the side of outer rim and inner edge lie farthest away, be provided with outside butterfly plate
Fixing chamfering.
By adopting technique scheme, butterfly plate being rotated by valve rod, when sealing state needs to open, in valve
The butterfly plate of the thicker side of seat, due to lacking chamfering it is impossible to produce, and the butterfly plate in the relatively thin side of valve seat is arranged in inside edge
Produce chamfering, thus can easily produce will not be propped up by valve seat, and opposite side to inside valve body rotate when, Gu
Determine chamfering and be also avoided that the edge of butterfly plate is blocked, thus realizing the one-directional rotation of butterfly plate, the butterfly plate of one-directional rotation is easy to butterfly
The control of valve, when driving to valve rod using devices such as turbines, determines that sealing station is relatively difficult, directly adopts butterfly plate and valve seat
The mode of conflict stop, can accurately position butterfly plate, convenient operation, and the gap simultaneously contacting between butterfly plate and valve seat is less,
Sealing property is higher.
This utility model is further arranged to：Described valve seat bore is from outer to interior uniform increase.
By adopting technique scheme, liquid flows from the outside to the core, and in valve seat porch, internal diameter is little, thus sandstone etc. is miscellaneous
Will is not easy to pile up on the side wall of valve seat, and cleaning butterfly valve in can be effectively ensured during transmission medium.
This utility model is further arranged to：The sealing surface central authorities of described valve seat are provided with polytetrafluoroethylsealed sealed circle.
By adopting technique scheme, politef has very high chemical inertness, main chain stable it is not easy to tested
Agent is attacked, and chemical resistance is good, and temperature tolerance is good simultaneously, and viscosity is low, and lubricity is very high, is arranged on the middle position of ceramic-seal ring,
Can contact with ceramic seal circle, because lubricity is good, the keying of butterfly plate can be facilitated, reduce rigid contact between pottery
Abrasion, the sealing property of polytetrafluoroethylsealed sealed circle is also higher simultaneously, can be prevented effectively from gas-liquid from ceramic-seal ring and ceramic seal circle it
Between reveal；Valve seat and butterfly plate have very long service life simultaneously, after sealing property and abrasion resistance properties are improved, butterfly valve
There is longer service life.
This utility model is further arranged to：Described polytetrafluoroethylsealed sealed circle adopts expanded ptfe material.
By adopting technique scheme, expanded ptfe material is pure white pure, has high chemical stability,
Nontoxic pollution-free, has the characteristics that light weight, intensity are high, expanded ptfe material has the compressibility of height, very simultaneously
Easily fill up fine cracks, cavity and the groove on ceramic seal circle surface, internal gas, liquid and other medium pressure are higher simultaneously,
Sealing force is bigger.
This utility model is further arranged to：The edge of described butterfly plate is provided with ceramic-seal ring.
By adopting technique scheme, ceramic material has very high hardness and rigidity, simultaneously can high temperature resistant, corrosion resistant
Erosion, in butterfly valve, active force when sealing surface is contacted with transmission medium is maximum, thus easily being polluted by medium, ceramic material
There is the service life that high chemical stability ensure that butterfly valve.
This utility model is further arranged to：It is provided with sleeve, described sleeve is enclosed within and passes through on valve rod on described butterfly plate
Threaded valve rod is made to be fixedly connected with butterfly plate.
By adopting technique scheme, using sleeve connection valve rod, thus butterfly plate only exists along stem shaft relative to valve rod
To one degree of freedom, then using the bolt through sleeve, be threaded on valve rod, be connected firmly it is achieved that valve rod and set
Cylinder be fixedly connected.
This utility model is further arranged to：Described sleeve is provided with reinforcement perpendicular to the both sides of valve rod, and described plus
Strong muscle offsets to the butterfly plate center of circle.
By adopting technique scheme, the setting of reinforcement, situations such as on the one hand avoid sleeve stress run-off the straight
On the other hand occur, also to butterfly plate, there is booster action it is ensured that situations such as butterfly plate will not bend in the presence of hydraulic pressure.
This utility model is further arranged to：Described valve seat is ceramic material, and described valve seat is bonded on body cavity.
By adopting technique scheme, ceramic material has very high hardness and rigidity, simultaneously can high temperature resistant, corrosion resistant
Erosion, in butterfly valve, active force when sealing surface is contacted with transmission medium is maximum, thus easily being polluted by medium, ceramic material
There is the service life that high chemical stability ensure that butterfly valve, connecting valve seat by the way of bonding, due to ceramic length
Service life does not need to change, and the use that can continue down.
This utility model is further arranged to：The bottom of described valve rod is provided with flange and is connected to the end cap on valve body.
By adopting technique scheme, valve body is provided with installing hole in the bottom of valve rod, can facilitate the installation of valve rod
Need sheathed end cap outside installing hole, prevent valve rod from deviating from, sealed in the direction, it is to avoid the medium of transmission is along installation simultaneously
The gap in hole is flowed out；Flange bonding strength is high, and good airproof performance is easy to disassemble, the convenient assembling to butterfly valve.
This utility model is further arranged to：It is provided with described valve body and prevent liquid from revealing at valve rod rotated down
Sealing ring pad, is provided with deep groove ball bearing between described sealing ring pad and end cap.
By adopting technique scheme, the setting of sealing ring pad strengthens sealing property at valve rod for the valve body, thus
Avoid the gap that medium rotates in valve rod to flow out, ensure the cleaning of interior media, deep groove ball bearing has good circumference simultaneously
Lubrication, reduces friction when valve rod rotates, increases the service life of valve rod.
In sum, this utility model has the advantages that：
1st, butterfly plate one-directional rotation is made by the setting of chamfering and size, stop after sealing, it is easy to daily operating with；
2nd, the setting of polytetrafluoroethylsealed sealed circle and sealing ring pad strengthens the sealing property of butterfly valve, adopts ceramic material and swollen simultaneously
Swollen polytetrafluoroethylmaterial material has very high chemical inertness, transports each material and is all not easy to be corroded, long service life.
Brief description
Fig. 1 is structural representation on the direction of butterfly plate inboard for the embodiment；
Fig. 2 is the cross-sectional schematic along the lateral symmetry axle of butterfly plate for the embodiment；
Fig. 3 is the cross-sectional schematic along valve rod axial direction for the embodiment.
In figure：1st, valve body；2nd, valve rod；3rd, butterfly plate；4th, valve seat；5th, outer rim；6th, inner edge；7th, produce chamfering；8th, fixing chamfering；
9th, polytetrafluoroethylsealed sealed circle；10th, ceramic-seal ring；11st, sleeve；12nd, reinforcement；13rd, end cap；14th, sealing ring pad；15th, deep-groove ball axle
Hold.
Specific embodiment
Below in conjunction with accompanying drawing, this utility model is described in further detail.
Embodiment：
A kind of three-eccentric-butterfly-valve, with reference to Fig. 2, including valve body 1, valve rod 2 and butterfly plate 3, is bonded with ceramic valve seat 4 in valve body 1,
Ceramic-seal ring 10 is bonded with butterfly plate 3, the sealing surface of valve seat 4 is eccentric with respect to the inner chamber of valve body 1, the sealing surface of valve seat 4
Outer rim 5 and inner edge 6 are all circular and intersect in the vertical plane with valve body 1 inner chamber axis, the center of circle of outer rim 5 and inner edge 6
The line in the center of circle, perpendicular to valve rod 2, in outer rim 5 and inner edge 6 at a distance of nearest side, is provided with inside butterfly plate 3 and produces chamfering 7,
There is provided space for butterfly plate 3 in producing of this position, in the side of outer rim 5 and inner edge 6 lie farthest away, be provided with solid outside butterfly plate 3
Determine chamfering 8 and proceed to offer space in this position from valve body 1 inboard for butterfly plate 3, valve seat 4 sealing surface interior without leave outer to inside radius
Uniformly increase, valve seat 4 is embedded with expanded ptfe sealing ring 9, conflict with ceramic-seal ring 10 and seal.
With reference to Fig. 1, butterfly plate 3 is wholely set the sleeve 11 being enclosed within valve rod 2, it is solid with valve rod 2 that sleeve 11 passes through screw
Fixed connection, the side of sleeve 11 further supports the reinforcement 12 to the skew of butterfly plate 3 center of circle, connects valve rod 2 using sleeve 11, thus
Butterfly plate 3 valve rod 2 relatively only exists the one degree of freedom along valve rod 2 axial direction, then using the bolt through sleeve 11, is threaded in
On valve rod 2, it is connected firmly it is achieved that being fixedly connected of valve rod 2 and sleeve 11, the setting of reinforcement 12, on the one hand avoids set
Situations such as cylinder 11 stress run-off the straight, occurs, and on the other hand also has booster action to butterfly plate 3 it is ensured that butterfly plate 3 will not be in hydraulic pressure
In the presence of situations such as bend.
With reference to Fig. 3, the bottom of valve body 1 is provided with the upper end cap 13 that flange is connected to valve body 1, is provided with anti-in valve body 1
The sealing ring pad 14 that only interior media is revealed at valve rod 2 rotation, has deep groove ball bearing between sealing ring pad 14 and end cap 13
15, the setting of sealing ring pad 14 strengthens sealing property at valve rod 2 for the valve body 1, thus avoiding the seam that medium rotates in valve rod 2
Clearance flow goes out, and ensures the cleaning of interior media simultaneously, and deep groove ball bearing 15 has circumferential lubrication well, reduces 2 turns of valve rod
Friction when dynamic, increases the service life of valve rod 2.
This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model
Field technique personnel can make to the present embodiment after reading this specification as needed does not have the modification of creative contribution, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (10)
1. a kind of three-eccentric-butterfly-valve, including valve body (1), valve rod (2) and butterfly plate (3), is provided with valve seat (4) in described valve body (1),
It is characterized in that：The sealing surface of described valve seat (4) is eccentric with respect to the inner chamber of valve body (1), and the sealing surface of described valve seat (4) includes
Outer rim (5) and inner edge (6), described outer rim (5) is all circular and in vertical and valve body (1) inner chamber axis plane with inner edge (6)
Upper intersecting, the line in the center of circle of described outer rim (5) and the center of circle of inner edge (6) perpendicular to valve rod (2), in outer rim (5) and inner edge (6)
At a distance of nearest side, it is provided with inside butterfly plate (3) and produces chamfering (7), in the side of outer rim (5) and inner edge (6) lie farthest away,
It is provided with fixing chamfering (8) outside butterfly plate (3).
2. a kind of three-eccentric-butterfly-valve according to claim 1 it is characterised in that：Outer extremely interior equal without leave in described valve seat (4)
Even increase.
3. a kind of three-eccentric-butterfly-valve according to claim 1 it is characterised in that：The sealing surface central authorities of described valve seat (4) set
It is equipped with polytetrafluoroethylsealed sealed circle (9).
4. a kind of three-eccentric-butterfly-valve according to claim 3 it is characterised in that：Described polytetrafluoroethylsealed sealed circle (9) is using expansion
Polytetrafluoroethylmaterial material.
5. a kind of three-eccentric-butterfly-valve according to claim 1 it is characterised in that：The edge of described butterfly plate (3) is provided with pottery
Porcelain sealing ring (10).
6. a kind of three-eccentric-butterfly-valve according to claim 1 it is characterised in that：It is provided with sleeve on described butterfly plate (3)
(11), described sleeve (11) is enclosed within valve rod (2) to be threaded connection makes valve rod (2) be fixedly connected with butterfly plate (3).
7. a kind of three-eccentric-butterfly-valve according to claim 6 it is characterised in that：Described sleeve (11) is perpendicular to valve rod (2)
Both sides be provided with reinforcement (12), and described reinforcement (12) to butterfly plate (3) center of circle offset.
8. a kind of three-eccentric-butterfly-valve according to claim 1 it is characterised in that：Described valve seat (4) is ceramic material, described
Valve seat (4) is bonded on valve body (1) inner chamber.
9. a kind of three-eccentric-butterfly-valve according to claim 1 it is characterised in that：The bottom of described valve rod (2) is provided with method
Orchid is connected to the end cap (13) on valve body (1).
10. a kind of three-eccentric-butterfly-valve according to claim 9 it is characterised in that：Being provided with described valve body (1) prevents liquid
The sealing ring pad (14) that body is revealed at valve rod (2) rotated down, is provided between described sealing ring pad (14) and end cap (13)
Deep groove ball bearing (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620829476.0U CN205956409U (en) | 2016-07-30 | 2016-07-30 | Triple -eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620829476.0U CN205956409U (en) | 2016-07-30 | 2016-07-30 | Triple -eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205956409U true CN205956409U (en) | 2017-02-15 |
Family
ID=57973771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620829476.0U Expired - Fee Related CN205956409U (en) | 2016-07-30 | 2016-07-30 | Triple -eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205956409U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027268A (en) * | 2018-09-10 | 2018-12-18 | 浙江贝托阀门有限公司 | A kind of big valve of ethylene cracking gas |
-
2016
- 2016-07-30 CN CN201620829476.0U patent/CN205956409U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027268A (en) * | 2018-09-10 | 2018-12-18 | 浙江贝托阀门有限公司 | A kind of big valve of ethylene cracking gas |
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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: 20170215 Termination date: 20180730 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |