CN204985768U - Butterfly valve with two-way sealing function - Google Patents
Butterfly valve with two-way sealing function Download PDFInfo
- Publication number
- CN204985768U CN204985768U CN201520503791.XU CN201520503791U CN204985768U CN 204985768 U CN204985768 U CN 204985768U CN 201520503791 U CN201520503791 U CN 201520503791U CN 204985768 U CN204985768 U CN 204985768U
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- Prior art keywords
- valve
- butterfly
- seal ring
- valve seat
- seat
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 230000002457 bidirectional effect Effects 0.000 abstract description 5
- 230000002441 reversible effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a butterfly valve with bidirectional sealing function, which has the technical proposal that the inner wall of a valve seat is provided with an inclined part, the inclined part is arranged around the inner wall of the valve seat, one side of the valve seat, which is opposite to the liquid inlet, is provided with an opening larger than the other side, the sealing ring is in line contact with the inclined part, on one hand, the inclined part is arranged on the inner wall of the valve seat and surrounds the inner wall of the valve seat, therefore, when the butterfly valve is used, the sealing ring can be well blocked when the butterfly valve is subjected to the positive acting force of the medium, so that the pressure of the sealing ring can be better and closely abutted against the inclined part on the valve seat, on the other hand, the sealing ring is contacted with the inclined part on the valve seat, when the butterfly valve is closed, the butterfly valve is always in the best line contact sealing, and the sealing ring can automatically compensate in the axial direction and the radial direction, so that the defect of insufficient sealing force caused by reverse action of a medium is overcome, and the bidirectional sealing is reliable.
Description
Technical field
The utility model relates to valve field, and more particularly, it relates to a kind of butterfly valve with two way sealed function.
Background technique
Valve is the controlling component in fluid delivery system, there is cut-off, regulate, water conservancy diversion, prevent adverse current, voltage stabilizing, the functions such as shunting or overflow pressure relief, it is of a great variety, gate valve can be divided into by effect and purposes, stop valve, stopcock, ball valve and butterfly valve etc., it is widely used in the long line conveyance conduit of rock gas, metallurgical, water power, thermoelectricity, urban water supply and sewerage, the industries such as farmland discharging-irrigating, being applicable to medium is rock gas, coal gas, steam, air, water etc., in the two-way exchange pipe-line system of medium, be used as to block or be communicated with medium, wherein butterfly valve mainly comprises valve body, valve seat and valve rod, valve seat is arranged in valve body, valve rod is provided with butterfly plate, drive butterfly plate rotation to realize the logical of valve body by rotation valve rod to close.
Current butterfly valve is on the market all by realizing seal action simply by the seal ring on butterfly plate substantially, so in use by the pressure effect of medium, seal ring easily occurs that position skew is even dropped affects the effect of sealing, and then also have butterfly valve the inwall of valve seat to be arranged to one-sided inclination, and then situation appearance seal ring position can avoided when being subject to medium positive acting power to offset or come off, and the stressed increase sealing of seal ring, but the effect of unidirectional excellent sealing can only be played like this, when rotating butterfly plate valve body, easily there is medium backward-acting power, and general butterfly valve directly affects the sealing of seal ring when being subject to backward-acting power, seal ring is caused to conflict with valve base inner wall closely, and then there is the situation of medium back flow, two-way good seal action cannot be realized, be further improved.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of butterfly valve with two way sealed function.
For achieving the above object, the utility model provides following technological scheme: a kind of butterfly valve with two way sealed function, comprise valve body, valve seat and valve rod, described valve seat is arranged in valve body, and described valve rod is provided with butterfly plate, described butterfly plate is provided with seal ring, and described seal ring and valve base inner wall are conflicted, described valve base inner wall is provided with rake, and described rake is arranged around valve base inner wall, described valve seat relative liquid entering hole one side opening is greater than opposite side, described seal ring and rake linear contact lay.
Further, described seal ring cross section is in " 7 " font, and described seal ring top is provided with top tip part, and described top tip part and valve base inner wall are conflicted.
Further, described butterfly plate is provided with the compensation device increasing seal ring spring-back force.
Further, the thrust ring seat that described compensation device comprises conflict block, butterfly spring and is fixed on butterfly plate, described conflict block and seal ring are conflicted, and described butterfly spring is arranged between conflict block and thrust ring seat, and described conflict block is compressed by thrust ring seat and conflicts with seal ring.
Further, described rake angle of inclination around valve seat circumference increase gradually and this angle between 2 to 18 degree.
Further, described valve rod relative valve body center eccentric setting, the relative valve rod eccentric setting of sealing surface of described butterfly plate, the sealing surface opposite valve seat centerline offset of described butterfly plate is arranged.
Further, described valve rod is arranged with self oiling bearing, between described self oiling bearing between valve rod and valve body.
Compared with prior art, the utility model has the advantage of: on the one hand by arranging rake on valve base inner wall, and this rake is arranged around valve base inner wall, the passage with tapering is formed in such valve seat, and then valve base inner wall all has gradient everywhere, the effect of fine baffle seal circle can be played when being therefore subject to medium positive acting power when butterfly valve uses, seal ring pressurized can closely be conflicted by the rake better and on valve seat, do not worry that the situation that seal ring is deviate from occurs simultaneously yet, rake bit line contact on the other hand on seal ring and valve seat, all the time best line contact sealing is in when butterfly valve cuts out, and seal ring is in axis, radial direction all can auto-compensation, overcome medium acting in opposition sealing force not enough, two way sealed is reliable, therefore when mounted by MEDIA FLOW to restriction, also not by the impact of spatial position, can install in any direction.
Accompanying drawing explanation
Fig. 1 is the sectional view that the utility model has the butterfly valve embodiment of two way sealed function;
Fig. 2 is the enlarged view that the utility model has the butterfly valve example I place of two way sealed function.
Reference character: 1, valve body; 2, valve seat; 21, rake; 3, valve rod; 4, butterfly plate; 5, seal ring; 51, top tip part; 61, conflict block; 62, butterfly spring; 63, thrust ring seat; 7, self oiling bearing.
Embodiment
Referring to figs. 1 through Fig. 2, the butterfly valve embodiment that the utility model has two way sealed function is described further.
A kind of butterfly valve with two way sealed function, comprise valve body 1, valve seat 2 and valve rod 3, valve seat 2 is arranged in valve body 1, valve rod 3 is provided with butterfly plate 4, butterfly plate 4 is provided with seal ring 5, and seal ring 5 and valve seat 2 inwall are conflicted, valve seat 2 inwall is provided with rake 21, rake 21 is arranged around valve seat 2 inwall, valve seat 2 relatively liquid entering hole one side opening is greater than opposite side, wherein seal ring 5 cross section is in " 7 " font, and seal ring 5 top is provided with top tip part 51, and top tip part 51 and valve seat 2 inwall are conflicted and realized seal ring 5 and rake 21 linear contact lay.
On the one hand by arranging rake 21 on valve seat 2 inwall, and this rake 21 is arranged around valve seat 2 inwall, the passage with tapering is formed in such valve seat 2, and then valve seat 2 inwall all has gradient everywhere, the effect of fine baffle seal circle 5 can be played when being therefore subject to medium positive acting power when butterfly valve uses, seal ring 5 pressurized can closely be conflicted by the rake 21 better and on valve seat 2, do not worry that the situation that seal ring 5 is deviate from occurs simultaneously yet, seal ring 5 and rake 21 bit line contact on valve seat 2 on the other hand, all the time best line contact sealing is in when butterfly valve cuts out, and seal ring 5 is in axis, radial direction all can auto-compensation, overcome medium acting in opposition sealing force not enough, two way sealed is reliable, therefore when mounted by MEDIA FLOW to restriction, also not by the impact of spatial position, can install in any direction,
And " 7 " font structure design of seal ring 5, there is very strong resiliently deformable and spring-back force, reach the effect of linear sealing all the time.
Preferred butterfly plate 4 is provided with the compensation device increasing seal ring 5 spring-back force, this compensation device comprises conflict block 61, butterfly spring 62 and the thrust ring seat 63 be fixed on butterfly plate 4, conflict block 61 and seal ring 5 are conflicted, butterfly spring 62 is arranged between conflict block 61 and thrust ring seat 63, conflict block 61 is compressed by thrust ring seat 63 and conflicts with seal ring 5, when mounted first by seal ring 5, conflict block 61 and butterfly spring 62 are loaded onto with this, then thrust ring seat 63 is fixed by screws in and butterfly plate 4 compresses butterfly spring 62 makes its deformation have backward-acting power to seal ring 5, therefore when reverse pressure-bearing, seal ring 5 has just gathered spring-back force through the ability of pressurized, add the thrust of self-complementary device and inverse medium, keep linear good contact and reach to seal completely not revealing.
The angle of inclination of preferred rake 21 around valve seat 2 circumference increase gradually and this angle between 2 to 18 degree, form sealing surface relative valve rod 3 eccentric setting of butterfly plate 4, angle between 2 to 18 degree is the most suitable, effect is the most remarkable, and valve rod 3 valve body 1 center eccentric setting relatively,, sealing surface opposite valve seat 2 centerline offset of butterfly plate 4 is arranged.
By adopting three eccentricity, ramp structure, butterfly plate 4, valve body 1 seal ring 5 machining accuracy are high, the moment sealing surface that butterfly plate 4 is being opened departs from completely, the secondary almost no friction in opening-closing process of valve seal, open and close torque significantly reduces, have good self-closing, selfsealings performance, sealability is reliable and stable.
Preferably, valve rod 3 is arranged with self oiling bearing 7, between self oiling bearing 7 between valve rod 3 and valve body 1, this self oiling bearing 7 adopts high wearable unleaded without feeding lubricating bearing, bearing capacity is strong, wear-resisting property is good, reduces the surface friction drag of butterfly plate 4 when opening or close, ensure axle and valve body 1 forever without wearing and tearing.
To sum up, the utility model has following characteristics:
1, this butterfly valve has reliable two way sealed function, is the first product requiring bidirectional cutting in pipe-line system, during installation by MEDIA FLOW to restriction, also not by the impact of spatial position, can install in any direction.
2, this butterfly valve adopts three eccentricity, double inclined surface structure, butterfly plate 4, valve body 1 seal ring 5 machining accuracy are high, the moment sealing surface that butterfly plate 4 is being opened departs from completely, valve seal secondary in opening-closing process almost without rubbing, open and close torque significantly reduces, have good self-closing, selfsealings performance, sealability is reliable and stable.
3, the sealing pair of this butterfly valve, material is stainless steel, and through special processing, has the two-fold advantage of the hard sealing case elastic packing of full-metallic, anticorrosive, wear-resistant, high temperature resistant, anti-low temperature.
4, butterfly plate 4, valve body 1 seal ring 5 are be in best line contact sealing all the time when closing, and butterfly plate 4 seal ring 5 all can auto-compensation in axis, radial direction, and two way sealed is reliable.
5, after valve opening, butterfly plate 4 seal ring 5 can repair reset automatically, and seal ring 5 can regulate compensation after wearing and tearing automatically, and replaceable butterfly plate 4 seal ring 5 when being automatically adjusted to the limit, safeguards reliably very convenient.
6, adopts high wearable unleaded without feeding lubricating bearing at valve rod 3 and the key position of valve body 1 relative movement, have bearing capacity strong, wear-resisting property is good, reduces the surface friction drag of butterfly plate 4 when opening or close, guarantee valve rod 3 and valve body 1 forever without wearing and tearing.
7, the butterfly plate 4 of this butterfly valve adopts streamlined to bath hammer structural design, and have intensity high, area of passage is large, flow resistance coefficient little (<=0.15), novel and beautiful appearance.
Through the Specifeca tion speeification of this butterfly valve of experimental test as following table:
China's water resources is abundanter, hydraulic engineering is more, and Gao Long-distance Transmission Pipeline etc. has wilderness demand bidirectional metal hard-sealing butterfly valve, a huge market is brought to product, the research and development of this butterfly valve, belong to pioneering at home and abroad, it is high in the clouds product compared with similar products at home and abroad, technology is unique, empirical tests sealing principle is correct, application area widely, the sealing pair structure of this butterfly valve uniqueness, technology is in international most advanced level, large, medium and small Bidirectional full metal hard seal butterfly valve can be manufactured, good economic value and social benefit can be brought, there is wide market and application value.
Below be only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. one kind has the butterfly valve of two way sealed function, comprise valve body, valve seat and valve rod, described valve seat is arranged in valve body, described valve rod is provided with butterfly plate, and described butterfly plate is provided with seal ring, and described seal ring and valve base inner wall are conflicted, it is characterized in that: described valve base inner wall is provided with rake, described rake is arranged around valve base inner wall, and described valve seat relative liquid entering hole one side opening is greater than opposite side, described seal ring and rake linear contact lay.
2. the butterfly valve with two way sealed function according to claim 1, is characterized in that: described seal ring cross section is in " 7 " font, and described seal ring top is provided with top tip part, and described top tip part and valve base inner wall are conflicted.
3. the butterfly valve with two way sealed function according to claim 1, is characterized in that: described butterfly plate is provided with the compensation device increasing seal ring spring-back force.
4. the butterfly valve with two way sealed function according to claim 3, it is characterized in that: the thrust ring seat that described compensation device comprises conflict block, butterfly spring and is fixed on butterfly plate, described conflict block and seal ring are conflicted, described butterfly spring is arranged between conflict block and thrust ring seat, and described conflict block is compressed by thrust ring seat and conflicts with seal ring.
5. the butterfly valve with two way sealed function according to claim 1, is characterized in that: the angle of inclination of described rake around valve seat circumference increase gradually and this angle between 2 to 18 degree.
6. the butterfly valve with two way sealed function according to claim 1, is characterized in that: described valve rod relative valve body center eccentric setting, the relative valve rod eccentric setting of sealing surface of described butterfly plate, and the sealing surface opposite valve seat centerline offset of described butterfly plate is arranged.
7. the butterfly valve with two way sealed function according to claim 1, is characterized in that: described valve rod is arranged with self oiling bearing, between described self oiling bearing between valve rod and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520503791.XU CN204985768U (en) | 2015-07-13 | 2015-07-13 | Butterfly valve with two-way sealing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520503791.XU CN204985768U (en) | 2015-07-13 | 2015-07-13 | Butterfly valve with two-way sealing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204985768U true CN204985768U (en) | 2016-01-20 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520503791.XU Expired - Fee Related CN204985768U (en) | 2015-07-13 | 2015-07-13 | Butterfly valve with two-way sealing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204985768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989832A (en) * | 2015-07-13 | 2015-10-21 | 方正阀门集团(温州)机械制造有限公司 | Butterfly valve with both-way sealing function |
-
2015
- 2015-07-13 CN CN201520503791.XU patent/CN204985768U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989832A (en) * | 2015-07-13 | 2015-10-21 | 方正阀门集团(温州)机械制造有限公司 | Butterfly valve with both-way sealing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201105 Address after: No. 1921 Binhai 1st Road, economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: FANGZHENG VALVE GROUP Co.,Ltd. Address before: 325000, No. 1921, Binhai Park, Wenzhou economic and Technological Development Zone, Zhejiang, China Patentee before: FANGZHENG VALVE GROUP (WENZHOU) MACHINERY MANUFACTURING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 1921 Binhai 1st Road, economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: Founder Valve Group Co.,Ltd. Address before: No. 1921 Binhai 1st Road, economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee before: FANGZHENG VALVE GROUP Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |