CN205841792U - A kind of eccentric-butterfly-valve - Google Patents
A kind of eccentric-butterfly-valve Download PDFInfo
- Publication number
- CN205841792U CN205841792U CN201620541310.9U CN201620541310U CN205841792U CN 205841792 U CN205841792 U CN 205841792U CN 201620541310 U CN201620541310 U CN 201620541310U CN 205841792 U CN205841792 U CN 205841792U
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- Prior art keywords
- valve
- butterfly
- eccentric
- butterfly plate
- shaft
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Abstract
This utility model relates to butterfly valve structure design field, particularly relate to a kind of eccentric-butterfly-valve, including: butterfly valve body, valve shaft, butterfly plate and Power Component, wherein, butterfly valve is the most internal is formed for the valve channel that fluid passes through, and butterfly plate is located in described valve channel, and forms valve seat on the medial wall of valve channel, valve seat has sealing surface, and sealing surface surrounds the open area coordinated with butterfly plate outer rim；Valve shaft is arranged in butterfly valve body rotationally, and valve shaft is parallel with described butterfly plate and is relatively fixed connection；Drive mechanism is arranged on described butterfly valve body, rotates so that described butterfly plate blocks the open area that described valve seat surrounds for driving described valve shaft, and when described butterfly plate blocks described open area, described butterfly plate is that line face contacts with described sealing surface.The eccentric-butterfly-valve that this utility model provides effectively reduces the friction of butterfly plate and valve seat, and is effectively shortened the opening time of valve.
Description
Technical field
This utility model relates to butterfly valve structure design field, in particular to a kind of eccentric-butterfly-valve.
Background technology
Butterfly valve is also referred to as flap valve, is the regulation valve of a kind of simple in construction, can be used for controlling air, steam, various corrosion
The flowing of all kinds fluids such as property medium, mud, oil product, liquid metal and radiating medium, acts primarily as cut-out on pipeline
Effect with throttling.
For the butterfly valve of the on-off control of low pressure pipeline medium, including: allow the cylindric valve body that fluid flows through, and
Discoid valve plate or butterfly plate, valve plate or butterfly plate can rotate around the axis of himself, thus reach to open and close or the purpose of regulation.Butterfly
The valve body of valve is typically the cylinder-like part allowing fluid to flow through.Valve plate is provided with sealing surface, during action, during valve plate with valve shaft is
The heart rotates, and in course of action, sealing surface of seat set on valve body is pressed close to or departed to the sealing surface on valve plate, thus
Realization turns off or on function.
Butterfly valve arranges eccentric structure, its objective is the abrasion reducing valve in opening-closing process between butterfly plate and valve seat.
In existing technology, the architectural feature of eccentric-butterfly-valve is that valve shaft axis of rotation had both deviateed butterfly plate center, also offsets from sealing surface
The heart, the pyramid type axis deviation of sealing surface of valve plate is in valve body cylinder axis.Three-eccentric-butterfly-valve maximum feature changes seal construction,
It is no longer position seals, but torsion seals, and the contact surface being dependent between valve seat and butterfly plate compresses and reaches sealing effectiveness.
But, in eccentric-butterfly-valve structure of the prior art, though being improved to connect by the elastic packing between valve seat and butterfly plate
Contacting surface compresses and seals, and reduces the friction between butterfly plate and valve seat to a certain extent, but butterfly plate with under valve seat full off state
Still compress for surface-to-surface and seal, it is impossible to effectively reduce the friction in butterfly plate switching process, and the butterfly plate opening time is longer.
Utility model content
For drawbacks described above of the prior art, offer one eccentric-butterfly-valve of the present utility model, it is possible to solve above-mentioned existing
There is at least one problem present in technology.
Of the present utility model provide a kind of eccentric-butterfly-valve, mill between butterfly plate and valve seat during reducing valve opening
Moment required during damage, reduction valve opening is to reduce the time that valve opening is become required.Above-mentioned eccentric-butterfly-valve includes:
Including: butterfly valve body, valve shaft, butterfly plate and drive mechanism, it is characterised in that described butterfly valve is the most internal is formed for what fluid passed through
Valve channel, described butterfly plate is located in described valve channel, and is formed valve seat, described valve seat on the medial wall of described valve channel
Having sealing surface, described sealing surface surrounds the open area coordinated with described butterfly plate outer rim；Described valve shaft is arranged in rotationally
Described butterfly valve body, described valve shaft is parallel with described butterfly plate and is relatively fixed connection；Described drive mechanism is arranged on described butterfly valve
On body, rotate so that described butterfly plate blocks the open area that described valve seat surrounds for driving described valve shaft, and described butterfly
When plate blocks described open area, described butterfly plate and described sealing surface are linear contact lay.
Further, the outer rim of described butterfly plate has the seal land of evagination, the concave portion of described seal land and described valve
The sealing surface contact of seat.
Further, described butterfly plate periphery is the conical surface or cylinder, and described butterfly plate is little with being axially formed of described valve channel
In the angle of 90 degree.
Further, described butterfly plate has an axis of symmetry parallel with described valve shaft direction, and the central shaft of described valve shaft is inclined
Have in the axial direction of described valve channel from the axis of symmetry of described butterfly plate, the central shaft of described valve shaft and the axis of symmetry of described butterfly plate
Having the first eccentric distance, the central shaft of described valve shaft and the axis of symmetry of described butterfly plate radially have at described valve channel
Two eccentric distances.
Further, the central shaft of described valve shaft is vertical with the axis of described valve channel.
Further, described valve seat is ring-type, and the medial wall of described valve channel is provided with installation portion, and described valve seat is solid
Dingan County is contained on described installation portion.
Further, described valve channel is cylindrical, and the described open area that described valve seat surrounds is circle, described butterfly
Plate is the circular slab coordinated with described open area.
Further, described eccentric-butterfly-valve also includes: charging gear, for feeding in described valve channel, described gives
Material device is arranged on described butterfly valve body.
Further, it is provided with bearing between described valve shaft and described valve body.
Having the beneficial effects that of the eccentric-butterfly-valve that this utility model provides: the eccentric-butterfly-valve that this utility model provides is provided with
Three eccentricity structure and will arrange drift angle between butterfly plate and valve channel, is designed with butterfly plate the frustum of a cone cut sth. askew, reduces
Seal the contact surface of structure, thus reduce contact stress, make the frictional force of the sealing pair of eccentric-butterfly-valve effectively be dropped
Low；Will drift angle be set between butterfly plate and valve channel, eccentric-butterfly-valve in off position time butterfly plate and valve shaft there is drift angle, reduce
Moment in opening process, reduces the time needed for eccentric-butterfly-valve is opened.
Accompanying drawing explanation
Fig. 1 is the structural representation of the preferred embodiment according to eccentric-butterfly-valve of the present utility model；
Fig. 2 is the C-C face cross-sectional schematic of the embodiment illustrated in fig. 1 according to eccentric-butterfly-valve of the present utility model.
Reference:
1-butterfly valve body；2-butterfly plate；
3-valve seat；4-valve shaft；
5-stuffing box；6-bearing；
7-drive mechanism；8-valve channel
L1-valve seat axis L2-butterfly plate central shaft；
L3-valve shaft axis of rotation；L4-valve channel axis of rotation.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with of the present utility model excellent
Select the accompanying drawing in embodiment, the technical scheme in this utility model embodiment is further described in more detail.In the accompanying drawings, certainly
Begin to same or similar label eventually represent same or similar element or there is the element of same or like function.Described
Embodiment is a part of embodiment of this utility model rather than whole embodiments.The enforcement described below with reference to accompanying drawing
Example is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to restriction of the present utility model.Based on this practicality
Embodiment in novel, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of this utility model protection.Below in conjunction with the accompanying drawings embodiment of the present utility model is described in detail.
In the description of the present embodiment, it is to be understood that term " " center ", " longitudinally ", " laterally ", "front", "rear",
The orientation of the instruction such as "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relationship are for based on accompanying drawing institute
The orientation shown or position relationship, be for only for ease of description the present embodiment and simplify description rather than instruction or imply indication
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the present embodiment
The restriction of protection domain.
Fig. 1 is the structural representation of the eccentric-butterfly-valve that the present embodiment provides, and Fig. 2 is the section of structure in the C-C face of Fig. 1.
Refer to Fig. 1 and Fig. 2, the eccentric-butterfly-valve that the present embodiment provides includes: butterfly valve body 1, valve shaft 4, butterfly plate 2 and drive mechanism 7, its
In, it being formed for the valve channel 8 that fluid passes through in butterfly valve body 1, butterfly plate 2 is located in described valve channel 8, and valve channel
Forming valve seat 3 on the medial wall of 8, valve seat 3 has sealing surface, and sealing surface surrounds the open area coordinated with butterfly plate 2 outer rim；Valve shaft
4 are arranged in butterfly valve body 1 rotationally, and valve shaft 4 is parallel with butterfly plate 2 and is relatively fixed connection；Drive mechanism 7 is arranged on butterfly valve originally
On body 1, for driving valve shaft 4 to rotate so that described butterfly plate 2 blocks the open area that valve seat 3 surrounds, and block residence at butterfly plate 2
When stating open area, butterfly plate 2 is linear contact lay with the sealing surface of valve seat 3.
Specifically, the butterfly valve body 1 of the eccentric-butterfly-valve that the present embodiment provides is in hollow form, and the inside of hollow surrounds valve body and leads to
Road 8, valve channel 8 can cylindrical or prism-shaped, be used for fluid and passed through；Valve seat 3 may be integrally formed at valve channel
Inwall on, it is also possible to manufacture separately, and be installed in butterfly valve body 1 by trim ring.Butterfly plate 2 is arranged in valve channel 8, and
It is connected with valve shaft 4, so that butterfly plate 2 can rotate under valve shaft 4 acts on；Wherein, valve channel can be horizontally extending, valve shaft
Can be vertically arranged with butterfly plate, and the vertical centrage (symmetry of butterfly plate in the vertical direction of the axial line of valve shaft 4 and butterfly plate 2
Centrage) non-intersect, when valve shaft rotates under drive mechanism drives, butterfly plate can be driven to rotate around the centrage of valve shaft, thus
Realize being turned on and off of eccentric-butterfly-valve.Preferably, valve shaft 4 coordinates fixing with drive mechanism 7 valve shaft 4, bolt and packing ring excessively
Connect.Valve shaft coordinates fixing connection with butterfly plate 2 by pin and packing ring.
Butterfly plate 2 edge and valve seat 3 contact portion are wire.Such as, butterfly plate 2 can include forward and backward surface and be formed at
Side between forward and backward surface, this side can be resisted against to block fluid on valve seat, so that eccentric-butterfly-valve is in fully closed shape
State；Further, the side of butterfly plate such as can form fin or the boss of arc surfaced with evagination in butterfly plate 2 side, so that butterfly plate
2 sides can be contacted with the inner surface of plane valve seat 3 by this fin or boss, thus realizes between butterfly plate 2 and valve seat 3
Wire seal.
Certainly, the side of butterfly plate can also be cylinder, the sealing with seamed edge that now can arrange in the side of butterfly plate 2
Circle etc., so that when eccentric-butterfly-valve is in full off state, the seamed edge of the seal land that butterfly plate 2 is circumferentially disposed and the sealing surface of valve seat 3
Contact, realizes closure to valve channel 8, i.e. closes eccentric-butterfly-valve.
The eccentric-butterfly-valve that the present embodiment provides, owing to, in the sealing structure that coordinates between butterfly plate 2 with valve seat 3, have employed, institute
With butterfly plate 2 when being in full off state, between butterfly plate 2 with valve seat 3, contact the form sealed, the shape that and line-face contacts for line-face
Formula makes contact area between butterfly plate and valve seat the least, and therefore, the frictional force between butterfly plate 2 and valve seat 3 can significantly reduce,
Effectively reduce the abrasion between butterfly plate 2 and valve seat 3, extend the service life of eccentric-butterfly-valve.
In another embodiment of this utility model, butterfly plate 2 periphery is the conical surface or cylinder, butterfly plate 2 and the axial shape of valve channel 8
Become the angle less than 90 degree.Specifically, the periphery design of butterfly plate 2 is the face of cylinder or the conical surface, i.e. butterfly plate 2 includes forward and backward surface
With column or the side of taper, and the junction of side and front surface and rear surface is respectively formed fin；Now can make butterfly plate 2 with
The axis (i.e. the bearing of trend of valve channel) of valve channel 8 forms an acute angle-shaped angle, say, that now butterfly plate 2
With the axis out of plumb of valve channel 8, but it is obliquely installed so that butterfly plate side and front surface or this flank rearward surface junction
Fin contact with the sealing surface of valve seat, thus line-face when butterfly plate 2 outer rim seals with valve seat 3 that realizes contacts.The present embodiment is same
Sample can reduce the abrasion between butterfly plate 2 and valve seat 3.In addition, with the butterfly plate 2 of eccentric-butterfly-valve when full off state, butterfly plate 2
Compared with the structure axially vertical with valve channel 8, butterfly plate 2 center excessively of the present embodiment and the straight line vertical with valve shaft 4 and valve body
The axis of rotation of passage 8 forms an angle less than 90 degree, and the eccentric-butterfly-valve in the present embodiment can will be rotated butterfly by fully closed to standard-sized sheet
The angle of plate 2 is reduced to the difference of 90 degree and aforementioned angle, thus realizes in the case of valve rod rotating speed is constant, shorten plate 2 from
Full off state, to the time of full-gear, improves the response characteristic of valve.Further, butterfly plate 2 have one with valve shaft 4 direction put down
The axis of symmetry of row, the axis of symmetry of the central shaft deviation butterfly plate 2 of valve shaft 4, the central shaft of valve shaft 4 and the axis of symmetry of butterfly plate 2 are at valve body
Having the first eccentric distance in the axial direction of passage 8, the central shaft of valve shaft 4 and the axis of symmetry of butterfly plate 2 are at valve channel 8 radially
There is the second eccentric distance.Specifically, in the eccentric-butterfly-valve that the present embodiment provides, butterfly plate 2 profile can be zhou duicheng tuxing, its
There is an axis of symmetry, owing to the position that arranges of butterfly plate makes this axis of symmetry parallel with valve shaft 4, and and valve shaft between formed one
Eccentric throw, thus eccentric throw makes to be formed between valve shaft 4 and butterfly plate 2 two bias, and one of them is that above-mentioned eccentric throw is led at valve body
Projection in the axial direction in road 8 is above-mentioned first eccentric distance B, i.e. distance between L2 and L3 in Fig. 2, another be above-mentioned partially
The heart away from the second eccentric distance A radially at valve channel 8, i.e. distance between L3 and L4 in Fig. 2.The two eccentric throw
Arrange and coordinate the butterfly plate that is obliquely installed, can the stress of butterfly plate during Optimization Work further, more effectively reduction butterfly plate
Abrasion, increase the service life.
Further, the central shaft of valve shaft 4 is vertical with the axis of valve channel 8, and using this kind of design is to be opened by valve shaft 4
The time of butterfly plate 2 is down to the shortest, and ensures Stability Analysis of Structures, in butterfly plate 2 opening process, due to by fluid in valve channel 8
Active force, fluid flow direction is set to the direction of the rotation that butterfly plate 2 is opened, suffered by two one side of something of such butterfly plate 2
The size of power is identical, but in opposite direction.Just cancelling out each other, entirety does not stresses.
In the aforementioned embodiment, when valve seat 3 uses setting separately, is installed on valve body, valve seat 3 can be set to
Circulus, the medial wall of valve channel 8 is provided with installation portion, and valve seat 3 is fixedly mounted on installation portion, i.e. valve seat 3 passes through
Installation portion is kept away in being fixedly mounted on valve channel 8.Such as, the inwall of valve channel can be arranged and described valve seat periphery
The mounting groove coordinated, valve seat 3 can be fastened in this mounting groove, it is possible to is fixed by modes such as welding further so that valve seat 3 phase
Position for valve channel 8 immobilizes.Situation about being integrally formed on valve channel with valve seat is similar, and eccentric-butterfly-valve is in
During full off state, butterfly plate 2 contacts with valve seat 3, thus closed valve passage 8；In eccentric-butterfly-valve opening process, butterfly plate 2 and valve seat 3
Disengage, open valve channel 8.Valve body and valve seat are set by split mode, can conveniently process and assemble, be also beneficial to
Cost-effective.
Further, valve channel 8 is cylindrical, and valve seat 3 is circle along the open area that valve channel 8 axially surrounds,
In order to be fully sealed by valve channel 8, accordingly, butterfly plate 2 can be set to the shape phase of open area with valve seat 3
The circular slab of coupling.
Alternatively, the eccentric-butterfly-valve that the present embodiment provides can also include charging gear, and this charging gear is for eccentric butterfly
Feeding in valve channel 8 outside valve, this charging gear is arranged on butterfly valve body 1.
Further, bearing 6 it is additionally provided with between valve shaft 4 and butterfly valve body 1.By between valve shaft 4 and butterfly valve body 1
Arranging bearing 6, the friction produced between valve shaft 4 and butterfly valve body 1 is undertaken by bearing 6, and bearing can be by valve shaft 4 and butterfly valve body
Sliding friction between 1 is converted to the rolling friction within bearing 6, can more effectively solve the valve shaft 4 mistake at switch butterfly plate 2
Cheng Zhongyu supports the friction problem between the valve body of valve shaft, it is to avoid butterfly valve body 1 is caused frictionally damage.
Preferably, the drive mechanism described in previous embodiment can include motor and decelerator, the output shaft of motor and institute
Stating reducer input shaft to connect, the output shaft of described decelerator is connected with described valve shaft, to rotarily drive valve shaft by motor
Rotate, it is achieved eccentric-butterfly-valve is controlled fast and accurately.
Alternatively, described motor can also be replaced with hydraulic motor, and drives valve shaft to rotate by hydraulic motor.
Last it is noted that be described in detail above in association with eccentric-butterfly-valve specific embodiment of the present utility model, but
Not to restriction of the present utility model, every according to technical spirit of the present utility model to any letter made for any of the above embodiments
Single amendment belongs to technical scope of the present utility model, in addition it is also necessary to explanation, according to eccentric-butterfly-valve technology of the present utility model
The category of scheme includes the combination in any between each part mentioned above.
Claims (13)
1. an eccentric-butterfly-valve, including: butterfly valve body, valve shaft, butterfly plate and drive mechanism, it is characterised in that described butterfly valve body
Inside being formed for the valve channel that fluid passes through, described butterfly plate is located in described valve channel, and the inner side of described valve channel
Forming valve seat on wall, described valve seat has sealing surface, and described sealing surface surrounds the open area coordinated with described butterfly plate outer rim；Institute
Stating valve shaft and be arranged in described butterfly valve body rotationally, described valve shaft is parallel with described butterfly plate and is relatively fixed connection；Described biography
Motivation structure is arranged on described butterfly valve body, rotates for driving described valve shaft so that described butterfly plate blocks what described valve seat surrounded
Open area, and when described butterfly plate blocks described open area, described butterfly plate and described sealing surface are linear contact lay.
Eccentric-butterfly-valve the most according to claim 1, it is characterised in that the outer rim of described butterfly plate has the seal land of evagination,
The concave portion of described seal land contacts with the sealing surface of described valve seat.
Eccentric-butterfly-valve the most according to claim 1, it is characterised in that described butterfly plate periphery is the conical surface or cylinder, described butterfly
Plate is axially formed the angle less than 90 degree with described valve channel.
4. according to the eccentric-butterfly-valve described in any one in claim 1-3, it is characterised in that described butterfly plate has one with described
The axis of symmetry that valve shaft direction is parallel, the central shaft of described valve shaft deviates the axis of symmetry of described butterfly plate, the central shaft of described valve shaft and
The axis of symmetry of described butterfly plate has the first eccentric distance in the axial direction of described valve channel, the central shaft of described valve shaft and described
The axis of symmetry of butterfly plate radially has the second eccentric distance at described valve channel.
Eccentric-butterfly-valve the most according to claim 4, it is characterised in that the central shaft of described valve shaft and described valve channel
Axis is vertical.
Eccentric-butterfly-valve the most according to claim 1, it is characterised in that described valve seat is ring-type, described valve channel interior
Being provided with installation portion on sidewall, described valve seat is fixedly mounted on described installation portion.
Eccentric-butterfly-valve the most according to claim 1, it is characterised in that described valve channel is cylindrical, described valve seat encloses
The described open area become is circular, and described butterfly plate is the circular slab coordinated with described open area.
8. the eccentric-butterfly-valve as described in any one in claim 1-3, it is characterised in that also include: charging gear, for
Charging in described valve channel, described charging gear is arranged on described butterfly valve body.
9. eccentric-butterfly-valve as claimed in claim 4, it is characterised in that also include: charging gear, for described valve channel
Interior charging, described charging gear is arranged on described butterfly valve body.
10. the eccentric-butterfly-valve as described in any one in claim 5-7, it is characterised in that also include: charging gear, be used for
Feeding in described valve channel, described charging gear is arranged on described butterfly valve body.
11. eccentric-butterfly-valves as described in any one in claim 1-3, it is characterised in that described valve shaft and described valve body it
Between be provided with bearing.
12. eccentric-butterfly-valves as claimed in claim 4, it is characterised in that be provided with bearing between described valve shaft and described valve body.
13. eccentric-butterfly-valves as described in any one in claim 5-7, it is characterised in that described valve shaft and described valve body it
Between be provided with bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620541310.9U CN205841792U (en) | 2016-06-03 | 2016-06-03 | A kind of eccentric-butterfly-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620541310.9U CN205841792U (en) | 2016-06-03 | 2016-06-03 | A kind of eccentric-butterfly-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205841792U true CN205841792U (en) | 2016-12-28 |
Family
ID=57623881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620541310.9U Expired - Fee Related CN205841792U (en) | 2016-06-03 | 2016-06-03 | A kind of eccentric-butterfly-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205841792U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864438A (en) * | 2016-06-03 | 2016-08-17 | 凯瑞特阀业有限公司 | Eccentric butterfly valve |
-
2016
- 2016-06-03 CN CN201620541310.9U patent/CN205841792U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864438A (en) * | 2016-06-03 | 2016-08-17 | 凯瑞特阀业有限公司 | Eccentric butterfly valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161228 Termination date: 20200603 |