CN207178722U - Four eccentric high-performance butterfly valves - Google Patents
Four eccentric high-performance butterfly valves Download PDFInfo
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- CN207178722U CN207178722U CN201721238127.2U CN201721238127U CN207178722U CN 207178722 U CN207178722 U CN 207178722U CN 201721238127 U CN201721238127 U CN 201721238127U CN 207178722 U CN207178722 U CN 207178722U
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- valve
- stopping means
- valve seat
- valve body
- butterfly
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Abstract
A kind of four eccentric high-performance butterfly valves, it is big mainly to solve three eccentric metal hard sealed butterfly damper sealing cone change width, seal pressure is uneven, back-pressure direction seal pressure is not high, it is poorly sealed, zero leakage can not be accomplished, including valve body, valve rod, butterfly plate component, valve seat, stopping means, valve seat is arranged in valve body, it is described offset angle d to be present in sealing surface of seat and valve flowing channel center, valve seat forms the second conical seal (contact) face being adapted to the first conical seal (contact) face, step is provided with valve body, stopping means, valve seat is arranged on step, between stopping means, gap between step or stopping means be present, realize front and rear float, the advantage is that makes sealing cone more they tend to uniformity, homogenize sealed cover ratio pressure, two way seal performance is good, increase sealing reliability.
Description
Technical field
A kind of butterfly valve is the utility model is related to, is specifically designed a kind of four eccentric high-performance butterfly valves.
Background technology
The eccentric metal hard sealed butterfly damper produced at present is mainly based on three eccentricity structure, and valve body sealing surface is all directly to exist
Built-up welding sealing surface in the built-up welding of valve body body or rigid valve cup ring, three eccentricity structure butterfly plate sealing surface and valve in horizontal parting face
Body sealing surface is mutually perpendicular to, that is to say, that pressure medium is zero to the component of sealing surface in the vertical point, point when forward direction is pressed
Pressure medium always drives butterfly plate to be opened, and densification is compared in the forced seal that valve rod applies when the seal pressure at the point is only by closing
Envelope, because the seal f ace width that three eccentricity structure processes changes greatly, cause the stress size on sealing surface endless belt uneven,
Influence sealing property and valve service life.And back-pressure range tie pressure is to drive butterfly plate sealing surface and valve body sealing surface point
Seal pressure from, valve sealing face only provides a forced seal power by drive device, so it is difficult to accomplish zero leakage, middle height
Reversely pressure is just more difficult to pressure valve.
The content of the invention
Three eccentric metal hard sealed butterfly damper sealing cone change width is big, seal pressure is uneven in order to solve, back-pressure side
It is not high, poorly sealed to seal pressure, it is impossible to accomplish zero leakage, this patent provides a kind of four eccentric high-performance butterfly valves, the valve
There is offset angle d in seat sealing surface, valve seat forms the second cone seal being adapted to the first conical seal (contact) face with valve flowing channel center
Face, valve body is interior to be provided with step, stopping means, and valve seat is arranged between step, stopping means, deposited between step or stopping means
In gap, front and rear float is realized.
A kind of four eccentric high-performance butterfly valves, including valve body, valve rod, butterfly plate component, valve seat, stopping means, valve seat are arranged on
In valve body, butterfly plate component is provided with the first conical seal (contact) face, exists between horizontal facet valve rod and butterfly plate sealing surface median plane inclined
The heart exists between eccentric throw b, the first conical seal (contact) face centre of gyration and runner center away from a, valve rod and valve flowing channel center and existed
There is offset angle d in offset angle c, the sealing surface of seat, valve seat is formed and is adapted to the first conical seal (contact) face with valve flowing channel center
The second conical seal (contact) face, step, stopping means are provided with valve body, valve seat is arranged between step, stopping means, with step or
Gap between stopping means be present, realize front and rear float.
The valve seat formed with annular groove, is circumferentially uniformly arranged close to the end face of stopping means on the stopping means
There are some through holes for leading to annular groove.
The stopping means includes decile spacing ring, retainer ring and screw, and the valve body is provided with installation etc. and divides spacing ring
Mounting groove, retainer ring is fixedly connected by screw with decile spacing ring.
The valve seat is provided with annular groove, and sealing ring is provided with annular groove.
The beneficial effects of the utility model are：Sealing cone is more they tended to uniformity, homogenize sealed cover ratio pressure, it is two-way
Good seal performance, increase sealing reliability.
Brief description of the drawings
Fig. 1 is the structural representation of the eccentric high-performance butterfly valve of the utility model embodiment four.
Fig. 2 is the partial structurtes enlarged diagram of the eccentric high-performance butterfly valve of the utility model embodiment four.
Fig. 3 is the structure enlargement diagram of the eccentric high-performance butterfly valve of the utility model embodiment four.
Embodiment
As illustrated, a kind of four eccentric high-performance butterfly valves, including valve body 1, valve rod 2, butterfly plate component 3, valve seat 6, spacing dress
7 are put, valve seat 6 is arranged in valve body 1, and butterfly plate component 3 is provided with the first conical seal (contact) face 31, close in horizontal facet valve rod 2 and butterfly plate
Eccentric throw a, valve rod 2 and the runner center of valve body 1 be present and exist in eccentric throw b, the revolution of the first conical seal (contact) face 31 in front cover median plane
There is offset angle c in the heart and runner center, the sealing surface of seat and valve flowing channel center have an offset angle d, and valve seat 6 is formed and the
Second conical seal (contact) face 32 of one conical seal (contact) face 31 adaptation, valve body is interior to be provided with step 12, stopping means 7, and valve seat 6 is arranged on platform
Between rank 12, stopping means 7, gap between step 12 or stopping means 7 be present, realize front and rear float.
By setting offset angle d with valve seat 6 in the first conical seal (contact) face 31, sealing cone is more they tended to uniformity, make close
Front cover homogenizes than pressure, by setting gap in valve seat 6 and step 12 or stopping means 7, when under positive pressure medium, and valve seat
6 move under pressure medium to stopping means 7, and when under reverse media pressure, valve seat 6 is under pressure medium to the direction of step 12
Mobile, the displacement of butterfly plate component 3 and the displacement synchronous of valve seat 6 under medium effect, making valve seat 6, flexibly floating is reliable, two way seal
It can improve.
As illustrated, the valve seat close to the end face of stopping means 7 formed with annular groove 10, on the stopping means 7
Some through holes 11 for leading to annular groove 10 are circumferentially evenly arranged with, the through hole 11 leads to annular recessed for the inclination of stopping means 7
Groove 10.
By said structure, the through hole 11 on stopping means 7 connects with annular groove 10 on valve seat 6, reversely medium during pressure
Quick-pressurizing makes valve seat 6 produce piston effect in annular groove 10, on the premise of malleation direction sealing state is not changed,
Back-pressure direction provides one and can change, have a piston effect valve seat 6, and system pressure is higher during back-pressure, and increased seal pressure is got over
Greatly.
It is provided with as illustrated, the stopping means 7 includes decile spacing ring 72, retainer ring 8 and screw 9, the valve body 1
Installation etc. divides the mounting groove 71 of spacing ring 72, and spacing ring 72 is arranged in mounting groove 71, and retainer ring 8 is limited by screw 9 and decile
Position ring 72 is fixedly connected, and decile spacing ring 72 with the link position of retainer ring 8 with being provided with step, retainer ring 8 and decile spacing ring 72
Ladder coordinates, and is fixed by screw 9.
Stopping means using etc. divide spacing ring 72, can be easily installed.
Certainly, decile spacing ring 72 can be divided ring, pendant collet, eight open loops.
As illustrated, the valve seat 6 is provided with annular groove 5, sealing ring 51 is provided with annular groove 5, sealing can be increased
Energy.
Every technical staff's notice：Although the utility model describes according to above-mentioned embodiment, this
The invention thought of utility model is not limited to that utility model, any repacking with inventive concept, will all include this specially
In sharp scope of patent protection.
Claims (4)
1. four eccentric high-performance butterfly valves, including valve body（1）, valve rod（2）, butterfly plate component（3）, valve seat（6）, stopping means（7）, valve
Seat（6）Installed in valve body（1）It is interior, butterfly plate component（3）Provided with the first conical seal (contact) face（31）, in horizontal facet valve rod（2）With butterfly
Eccentric throw a, valve rod (2 between plate sealing surface median plane be present）With valve body（1）It is close eccentric throw b, the first taper to be present in runner center
Front cover（31）The centre of gyration and valve body（1）Offset angle c between runner center be present, it is characterised in that：The valve seat（6）Sealing surface
With valve body（1）Offset angle d, valve seat between runner center be present（6）Formed and the first conical seal (contact) face（31）Second cone of adaptation
Shape sealing surface（32）, valve body（1）It is interior to be provided with step（12）, stopping means（7）, valve seat（6）It is arranged on step（12）, stopping means
（7）Between, with step（12）Or stopping means（7）Between gap be present, realize front and rear float.
2. four eccentric high-performances butterfly valve according to claim 1, it is characterised in that：The valve seat（6）Close to stopping means
（7）End face formed with annular groove（10）, the stopping means（7）Upper circumference, which is evenly arranged with, some leads to annular groove
（10）Through hole（11）.
3. four eccentric high-performances butterfly valve according to claim 2, it is characterised in that：The stopping means（7）Including decile
Spacing ring（72）, retainer ring（8）With screw（9）, the valve body（1）It is provided with installation etc. and divides spacing ring（72）Mounting groove
（71）, retainer ring（8）Pass through screw（9）With decile spacing ring（72）It is fixedly connected.
4. four eccentric high-performances butterfly valve according to claim 1, it is characterised in that：The valve seat（6）It is provided with annular groove
（5）, annular groove（5）It is interior to be provided with sealing ring（51）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238127.2U CN207178722U (en) | 2017-09-26 | 2017-09-26 | Four eccentric high-performance butterfly valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721238127.2U CN207178722U (en) | 2017-09-26 | 2017-09-26 | Four eccentric high-performance butterfly valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207178722U true CN207178722U (en) | 2018-04-03 |
Family
ID=61749228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721238127.2U Active CN207178722U (en) | 2017-09-26 | 2017-09-26 | Four eccentric high-performance butterfly valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207178722U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458461A (en) * | 2018-12-25 | 2019-03-12 | 博雷（中国）控制系统有限公司 | A kind of three-eccentric-butterfly-valve and pressure adaptive valve control system |
| CN113669451A (en) * | 2021-08-31 | 2021-11-19 | 湖北三江航天红林探控有限公司 | Sealing structure and application thereof in high-temperature and high-pressure system |
| WO2022133900A1 (en) * | 2020-12-24 | 2022-06-30 | 浙江石化阀门有限公司 | High-pressure large-diameter two-way hard-sealing butterfly valve |
-
2017
- 2017-09-26 CN CN201721238127.2U patent/CN207178722U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458461A (en) * | 2018-12-25 | 2019-03-12 | 博雷（中国）控制系统有限公司 | A kind of three-eccentric-butterfly-valve and pressure adaptive valve control system |
| CN109458461B (en) * | 2018-12-25 | 2023-09-19 | 博雷（中国）控制系统有限公司 | Three eccentric butterfly valve and pressure self-adaptive valve control system |
| WO2022133900A1 (en) * | 2020-12-24 | 2022-06-30 | 浙江石化阀门有限公司 | High-pressure large-diameter two-way hard-sealing butterfly valve |
| CN113669451A (en) * | 2021-08-31 | 2021-11-19 | 湖北三江航天红林探控有限公司 | Sealing structure and application thereof in high-temperature and high-pressure system |
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