CN201739531U - Triple eccentric bidirectional metal hard seal butterfly valve - Google Patents
Triple eccentric bidirectional metal hard seal butterfly valve Download PDFInfo
- Publication number
- CN201739531U CN201739531U CN2010202616212U CN201020261621U CN201739531U CN 201739531 U CN201739531 U CN 201739531U CN 2010202616212 U CN2010202616212 U CN 2010202616212U CN 201020261621 U CN201020261621 U CN 201020261621U CN 201739531 U CN201739531 U CN 201739531U
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- Prior art keywords
- butterfly plate
- butterfly
- valve body
- axial end
- valve
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- Expired - Lifetime
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- 239000002184 metal Substances 0.000 title claims abstract description 17
- 230000002457 bidirectional effect Effects 0.000 title abstract 3
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000003825 pressing Methods 0.000 claims description 19
- 230000003044 adaptive effect Effects 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000005489 elastic deformation Effects 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a triple eccentric bidirectional metal hard seal butterfly valve, which comprises a valve body, a driving mechanism and a butterfly plate assembly, wherein the valve body is provided with an internal rotation wall with a conical surface segment. The driving mechanism is provided with a valve rod. The butterfly plate assembly is fixedly connected on the valve rod, is positioned in the valve body and comprises a butterfly plate, a pressure plate and a sealing ring. The butterfly plate assembly is provided with an axial end surface, the axial end surface is provided with an assembly groove in a concave mode, and a propping spring is arranged in the assembly groove. The pressure plate is fixedly connected on the axial end surface of the butterfly plate. The sealing ring is fixedly connected between the butterfly plate and the pressure plate and is propped by the propping spring, the sealing ring comprises two steel sheets and a flexible sealing ring which is clamped by the two steel sheets and extends out of the steel sheets, and the flexible sealing ring corresponds to the conical surface segment of the internal rotation wall of the valve body. The utility model has the advantages that the propping spring is arranged to effectively compensate tolerance range between the valve rod and the valve body, effectively compensate elastic deformation of the valve rod under medium pressure, and solve the sealing problem of the valve in the process of bidirectional interchangeable medium transmission.
Description
Technical field
The utility model relates to a kind of three eccentric two-way metal hard-sealing butterfly valve.
Background technique
At present, as a kind of parts that are used for realizing pipe-line system break-make and flow control, can obtain very extensive use in many fields at oil, chemical industry, metallurgy, water power.In known technology, three eccentric metal hard sealed is advanced sealing technique, and it has high temperature resistant, operate lightly, opens and closes not have and rubs, and comes compensation sealing, the advantage that has improved sealability and increased the service life along with the moment of driving mechanism increases when closing.The CN00211710.X of Chinese patent database bulletin for example, three eccentric metal hard sealed butterfly damper, it comprises valve body, driver element and butterfly plate composition, described butterfly plate is formed and is comprised a butterfly plate, a pressing plate and seal ring, described butterfly plate and pressing plate are fixed together, described seal ring is fixed between butterfly plate and the pressing plate, and described seal ring is made up of the folded formula seal ring of multilayer soft or hard.This technological scheme has following problem: 1. the folded formula seal ring of multilayer soft or hard is fixed on the butterfly plate, and medium forms the front to its sealing surface and washes away when butterfly plate is in normally open, after the soft seal ring in the tinsel interlayer is washed away, directly influences sealability; 2. limited by structural condition, this inadaptability in structure valve body latus rectum is below the DN200mm, and reason is that the butterfly plate overall structure is too thick, and flow resistance is big; 3. because of the principle of three eccentric structures, sealing between butterfly plate sealing surface and the valve body is to lean on the moment of drive unit to make butterfly plate press to valve body, during then positive stream mode, the high sealing extruding is tight more more for pressure medium, then during the adverse current state, along with the increase of pressure medium, when the unit positive pressure between butterfly plate and the valve body during less than medium pressure, sealing can begin to leak.
The model utility content
The utility model provides the three eccentric two-way metal hard-sealing butterfly valve, and it has overcome the existing deficiency of the three eccentric metal hard sealed butterfly damper in the background technique.
The technological scheme that is adopted that the utility model solves its technical problem is:
The three eccentric two-way metal hard-sealing butterfly valve, it comprises a valve body, a driving mechanism and butterfly plate composition, described valve body has turret wall in, described driving mechanism has a valve rod that puts in turret wall in the valve body, described butterfly plate composition is fixed on the valve rod and is positioned within the valve body, and described interior turret wall has a conical surface section, and, described butterfly plate is formed, and it comprises:
Butterfly plate, it has an axial end, and described axial end is concaved with a fitting recess, and attaching has the contact spring within the described fitting recess;
Pressing plate, it is fixed in the butterfly plate axial end; And
Seal ring, it is fixed between butterfly plate and the pressing plate and is subjected to contact spring contact, and described seal ring comprises that two steel discs and are subjected to two steel disc clamping connections and stretch out flexible sealing ring outside the steel disc, the conical surface section of turret wall in the corresponding valve body of described flexible sealing ring.
Among one preferred embodiment: described two steel discs practise physiognomy to end face be concaved with locating slot, described flexible sealing ring becomes T shape and comprises a traversing section and vertical section of an affixed traversing section, the adaptive respectively locating slot that is fixed in two steel discs of described traversing section two ends, described vertical section clamping connection is between two steel discs and stretch out outside the steel disc.
Among one preferred embodiment: built-up welding has the heatproof corrosion resistant alloy-layer on the conical surface section that revolution is faced the wall and meditated in described.
Among one preferred embodiment: the described butterfly plate axial end outside is provided with positioning step, and described pressing plate is fixed in the butterfly plate axial end, forms fixed groove between described butterfly plate and the pressing plate, and described seal ring is fixed within the fixed groove.
Among one preferred embodiment: described fitting recess is arranged on the positioning table terrace of butterfly plate axial end.
Among one preferred embodiment: be fixed together by bolt between described pressing plate and the butterfly plate.
The technical program is compared with background technique, and it has following advantage:
1. be provided with the top bottom spring, seal ring comprises two steel discs and a flexible sealing ring, then overcome the existing deficiency of background technique, can effectively compensate the tolerance range between valve rod and the valve body, can effectively compensate the resiliently deformable of valve rod under pressure medium, solved the sealing problem that valve exists in the medium transport process of two-way exchange;
2. flexible sealing ring becomes T shape and comprises traversing section and vertical section, the adaptive respectively locating slot that is fixed in two steel discs of traversing section two ends, then combine the two-fold advantage of metal hard-sealing and soft seal, no matter under low temperature and high-temperature condition, all have the sealability of zero seepage;
3. evidence: during positive flow state (the media flow direction is identical with the butterfly plate sense of rotation), the pressure of sealing surface is the moment of drive unit and the pressure medium active force sum to butterfly plate, butterfly plate oblique cone surface was tight more with the valve body sealing surface extruding when forward pressure medium increased, and sealing effect is good more; During the reverse flow state, sealing between butterfly plate and the valve body makes butterfly plate press to valve body by the moment of drive unit, increase along with reverse media pressure, unit positive pressure between butterfly plate and the valve body is during less than medium pressure, and the spring of regulating pressing plate stored energy of deformation compensation butterfly plate and compaction forces of valve body sealing surface behind stand under load play automatic compensating action.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 has illustrated the generalized section of the butterfly valve of a preferred embodiment.
Fig. 2 has illustrated the local enlarged diagram in I place of Fig. 1.
Embodiment
Please refer to Fig. 1 and Fig. 2, the three eccentric two-way metal hard-sealing butterfly valve, it comprises a valve body 100, a driving mechanism 200 and butterfly plate composition 300.
Described valve body 100 has turret wall 110 in, described in turret wall 110 have a conical surface section 111, described in revolution face the wall and meditate that built-up welding has heatproof corrosion resistant alloy-layer 112 on 110 the conical surface section 111.Described driving mechanism 200 has one and puts in the valve rod 210 and an affixed valve rod 210 of turret walls in the valve body 100 and be positioned at control mechanism 220 outside the valve body 100.The user can drive valve rod 210 by control mechanism 220 and rotate relative to valve body 100.
Described butterfly plate composition 300 is fixed on the valve rod 210 and is positioned within the valve body 100.Described butterfly plate is formed 300 and is comprised butterfly plate 310, pressing plate 320 and seal ring 330.
Described butterfly plate 310 has an axial end, the described axial end outside is provided with stair-stepping first positioning step 311 and one second positioning step 312, offer attaching slot 313 on the ladder surface of described first positioning step 311, attaching has contact spring 314 within the described fitting recess 313.
Described seal ring 330 comprises that two steel discs 331 and are subjected to two steel discs, 331 clamping connections and stretch out flexible sealing ring 332 outside the steel disc 331.Described two steel discs 331 practise physiognomy to end face be concaved with locating slot, 332 one-tenth T shapes of described flexible sealing ring also comprise a traversing section and vertical section of an affixed traversing section, the adaptive respectively locating slot that is fixed in two steel discs 331 of described traversing section two ends, described vertical section clamping connection is between two steel discs 331 and stretch out outside the steel disc 331.The outer turning surface of described seal ring 330 can be arranged to cylinder, also can be arranged to the conical surface of adaptive conical surface section 111, and the external diameter of its external diameter and conical surface section is suitable, guarantees tight seal.Described seal ring 332 can adopt rubber processing to make.
Described seal ring 330 is installed in first positioning step 311 of butterfly plate 310, steel disc 331 parts of described seal ring 330 are stretched out outside the butterfly plate 310, described contact spring 314 acts on steel disc 331, the conical surface section 111 of the interior turret wall 110 of described flexible sealing ring 332 corresponding valve bodies 100.
Described pressing plate 320 adaptive second positioning steps 312 that are installed in butterfly plate 310, and press the steel disc 331 of seal ring 330, other sets bolt 340 and passes pressing plate 320 and two steel discs 331 and interlocking on butterfly plate 310, with fixedly butterfly plate 310, seal ring 330 and pressing plate 320.
Among the present embodiment, form the fixed groove of adaptive seal ring between described pressing plate and the butterfly plate axial end.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented according to this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.
Claims (6)
1. three eccentric two-way metal hard-sealing butterfly valve, it comprises a valve body, a driving mechanism and butterfly plate composition, described valve body has turret wall in, described driving mechanism has a valve rod that puts in turret wall in the valve body, described butterfly plate composition is fixed on the valve rod and is positioned within the valve body, and it is characterized in that: turret wall has a conical surface section in described, and, described butterfly plate is formed, and it comprises:
Butterfly plate, it has an axial end, and described axial end is concaved with a fitting recess, and attaching has the contact spring within the described fitting recess;
Pressing plate, it is fixed in the butterfly plate axial end; And
Seal ring, it is fixed between butterfly plate and the pressing plate and is subjected to contact spring contact, and described seal ring comprises that two steel discs and are subjected to two steel disc clamping connections and stretch out flexible sealing ring outside the steel disc, the conical surface section of turret wall in the corresponding valve body of described flexible sealing ring.
2. three eccentric two-way metal hard-sealing butterfly valve according to claim 1, it is characterized in that: described two steel discs practise physiognomy to end face be concaved with locating slot, described flexible sealing ring becomes T shape and comprises a traversing section and vertical section of an affixed traversing section, the adaptive respectively locating slot that is fixed in two steel discs of described traversing section two ends, described vertical section clamping connection is between two steel discs and stretch out outside the steel disc.
3. three eccentric two-way metal hard-sealing butterfly valve according to claim 1 and 2 is characterized in that: built-up welding has the heatproof corrosion resistant alloy-layer on the conical surface section that revolution is faced the wall and meditated in described.
4. three eccentric two-way metal hard-sealing butterfly valve according to claim 1 and 2, it is characterized in that: the described butterfly plate axial end outside is provided with positioning step, described pressing plate is fixed in the butterfly plate axial end, form fixed groove between described butterfly plate and the pressing plate, described seal ring is fixed within the fixed groove.
5. three eccentric two-way metal hard-sealing butterfly valve according to claim 4 is characterized in that: described fitting recess is arranged on the positioning table terrace of butterfly plate axial end.
6. three eccentric two-way metal hard-sealing butterfly valve according to claim 4 is characterized in that: be fixed together by bolt between described pressing plate and the butterfly plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202616212U CN201739531U (en) | 2010-07-16 | 2010-07-16 | Triple eccentric bidirectional metal hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202616212U CN201739531U (en) | 2010-07-16 | 2010-07-16 | Triple eccentric bidirectional metal hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739531U true CN201739531U (en) | 2011-02-09 |
Family
ID=43554806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202616212U Expired - Lifetime CN201739531U (en) | 2010-07-16 | 2010-07-16 | Triple eccentric bidirectional metal hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739531U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109042A (en) * | 2011-03-18 | 2011-06-29 | 赵雷 | Two-way pressure-bearing fluororubber fireproof butterfly valve |
| CN103486281A (en) * | 2013-09-23 | 2014-01-01 | 开封瑞科阀门有限公司 | Two-way all-metal hard seal butterfly valve with pre-tightening and floating valve seat |
| CN103836208A (en) * | 2012-11-22 | 2014-06-04 | 中国石油天然气集团公司 | Small-bore three-eccentric center butterfly valve and purpose thereof |
| CN105736717A (en) * | 2016-04-18 | 2016-07-06 | 浙江联大阀门有限公司 | All-steam tracing butterfly valve |
| CN109154395A (en) * | 2016-05-16 | 2019-01-04 | 弗洛麦克斯有限公司 | Butterfly valve disc device |
| CN110454578A (en) * | 2018-05-08 | 2019-11-15 | 中核苏阀科技实业股份有限公司 | An all-metal elastic arc lip seal ring for a hard-sealed butterfly valve |
| CN114992344A (en) * | 2022-06-21 | 2022-09-02 | 河北石阀机械设备有限公司 | Three-eccentric hard sealing butterfly valve |
-
2010
- 2010-07-16 CN CN2010202616212U patent/CN201739531U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109042A (en) * | 2011-03-18 | 2011-06-29 | 赵雷 | Two-way pressure-bearing fluororubber fireproof butterfly valve |
| CN102109042B (en) * | 2011-03-18 | 2013-07-17 | 赵雷 | Two-way pressure-bearing fluororubber fireproof butterfly valve |
| CN103836208A (en) * | 2012-11-22 | 2014-06-04 | 中国石油天然气集团公司 | Small-bore three-eccentric center butterfly valve and purpose thereof |
| CN103486281A (en) * | 2013-09-23 | 2014-01-01 | 开封瑞科阀门有限公司 | Two-way all-metal hard seal butterfly valve with pre-tightening and floating valve seat |
| CN103486281B (en) * | 2013-09-23 | 2016-08-10 | 开封瑞科阀门有限公司 | Pretension, floating valve seat Bidirectional full metal hard seal butterfly valve |
| CN105736717A (en) * | 2016-04-18 | 2016-07-06 | 浙江联大阀门有限公司 | All-steam tracing butterfly valve |
| CN109154395A (en) * | 2016-05-16 | 2019-01-04 | 弗洛麦克斯有限公司 | Butterfly valve disc device |
| CN110454578A (en) * | 2018-05-08 | 2019-11-15 | 中核苏阀科技实业股份有限公司 | An all-metal elastic arc lip seal ring for a hard-sealed butterfly valve |
| CN114992344A (en) * | 2022-06-21 | 2022-09-02 | 河北石阀机械设备有限公司 | Three-eccentric hard sealing butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 361000 Jingshan Road, Jimei District, Xiamen, Fujian Province, No. 801-805 Patentee after: Semak (Xiamen) valve Co. Ltd. Address before: 361000 Jingshan Road, Jimei District, Xiamen, Fujian Province, No. 801-805 Patentee before: SMKFD (Xiamen) Valve Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |
|
| CX01 | Expiry of patent term |