CN104197028A - Adjustable all-metal bidirectional hard seal type eccentric butterfly valve - Google Patents
Adjustable all-metal bidirectional hard seal type eccentric butterfly valve Download PDFInfo
- Publication number
- CN104197028A CN104197028A CN201410440924.3A CN201410440924A CN104197028A CN 104197028 A CN104197028 A CN 104197028A CN 201410440924 A CN201410440924 A CN 201410440924A CN 104197028 A CN104197028 A CN 104197028A
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- butterfly plate
- valve
- butterfly
- plate frame
- valve body
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention provides an adjustable all-metal bidirectional hard seal type eccentric butterfly valve. The adjustable all-metal bidirectional hard seal type eccentric butterfly valve solves the problem that according to an existing butterfly valve, the bidirectional seal effect is poor, a butterfly plate cannot be matched with all valve bodies, and the sealing surface of the butterfly plate is not resistant to flushing. The adjustable all-metal bidirectional hard seal type eccentric butterfly valve comprises a valve body, a valve rod and a butterfly plate. A medium channel where a medium flows is arranged in the valve body. The adjustable all-metal bidirectional hard seal type eccentric butterfly valve further comprises a butterfly plate frame. The valve rod is arranged on the butterfly plate frame in a sleeved mode and is in linkage connection with the butterfly plate frame. The butterfly plate is fixed to the butterfly plate frame. An eccentric angle a is formed between the axis of a sealing cone of the butterfly plate and the center line of the medium channel of the valve body. An adjusting device used for adjusting the distance between the sealing cone of the butterfly plate and the valve rod is arranged on the butterfly plate frame. According to the adjustable all-metal bidirectional hard seal type eccentric butterfly valve, the adjusting device is additionally arranged; the adjustable all-metal bidirectional hard seal type eccentric butterfly valve can achieve bidirectional seal and bear pressure in the forward direction and in the reverse direction, inner leakage is avoided when the product bears pressure in the forward direction or in the reverse direction, and therefore the sealing effect is good; the distance between a valve seal pair and the center line of the valve rod can be adjusted through the adjusting device, and therefore it is guaranteed that the product is sealed reliably.
Description
Technical field
The present invention relates to a kind of butterfly valve, be specifically related to a kind of all-metal reversible and firmly seal adjustable eccentric butterfly valve.
Background technique
Butterfly valve is again Flap valve, is a kind of modulating valve simple in structure, and the switch that also can be used for low pressure pipeline medium is simultaneously controlled.Butterfly valve refers to that closure member (flap or butterfly plate, be generally metalwork) is disk, rotates to reach a kind of valve of open and close around valve shaft, and on pipeline, main rising cut off and throttling action.Butterfly valve is applicable to carry on the pipeline of various corrosivity, non-corrosive fluids medium in the engineering systems such as producer, coal gas, rock gas, liquefied petroleum gas (LPG), town gas, cold and hot air, chemical industry smelting and generation environment-friendly, for regulating and block flowing of medium.Existing butterfly valve is divided into centre-pivoted butterfly valve and eccentric-butterfly-valve, and centre-pivoted butterfly valve is generally soft sealing butterfly valve and has the air-valve of leakage; Eccentric-butterfly-valve is divided into single bias, two bias and three bias, single bias and double eccentric butterfly valve are all generally to adopt soft seal, by interference fit, compress soft sealing material and reach sealing effect, single sealings eccentric and two bias are all by interference fit seal, in switching process, frictional force is very large, sealing surface is easy to grind away, and the life-span is short, and on sealing surface, easily leak lower shaft end position.There is three eccentric butterfly valve in technical development, reasonable setting due to bias, in switching process, there is no the friction between sealing surface, life-span is longer than former butterfly valve, sealing surface adopts resistant to elevated temperatures graphite or asbestos to add metal foil and is composited, so not only high temperature resistant life-span but also long, this butterfly valve valve advantages relatively has in the past obtained promoting widely and using, be the main flow structure of present butterfly valve, the butterfly plate assembly of existing three eccentric butterfly valve forms (referring to accompanying drawing 1) by butterfly plate, butterfly plate seal ring, pressure plate loop.But following shortcoming and disadvantage in using widely, have also been found: one, because sealing surface is that conical surface coordinates, medium can only be flowed along large conical surface direction to little conical surface direction, sealing effect is fine, more press tighter favourable sealing, but maybe need to control bi-directional medium and flow and just can not oppositely seal because pipeline medium occur to reflux, this is an industry difficult problem of this valve, is all effectively solved always.Two, the valve manufacturability of this structure is poor, butterfly plate and valve body can not be realized wildcard, because the valve rod hole on butterfly plate is eccentric, be difficult to be worked into consistent with the valve rod hole bias on valve body, the method adopting in industry be after butterfly plate assembly is processed with valve body sealing surface, press fit over together with, on boring machine, join together the valve rod hole on boring valve body and butterfly plate, so just solved, but but make butterfly plate and valve body there is no versatility, part is non-exchange, once occur that butterfly plate or Sealing damage, valve body sealing surface damages and is just difficult for repairing (processing is eccentric just inconsistent after repairing), if change a butterfly plate can not guarantee the bias of butterfly plate and the bias of valve body consistent, making valve change online the maintenance of butterfly plate or butterfly plate Sealing can not realize, once just have to scrap whole deck valve door so the damage of butterfly plate Sealing appears in this structure valve.Three, because butterfly plate Sealing is to adopt steel plate and asbestos or graphite compoiste adhering to form, the Sealing of butterfly plate enable possition butterfly plate is over against flow direction, if high pressure or high-velocity fluid medium will wash away asbestos or graphite in Sealing, the premature failure that causes sealing surface, makes valve just use after a period of time zero leakage completely.
Summary of the invention
For solving the three large problems that in background technique, existing butterfly valve exists, the invention provides a kind of all-metal reversible and firmly seal adjustable eccentric butterfly valve.
Technological scheme of the present invention is: a kind of all-metal reversible seals adjustable eccentric butterfly valve firmly, comprise valve body, valve rod and butterfly plate, in described valve body, be provided with the medium channel for medium circulation, described butterfly plate and valve rod are all located in valve body, also comprise butterfly plate frame, described valve stem casing is located on butterfly plate frame and with butterfly plate frame and is connected, described butterfly plate is fixed on butterfly plate frame, described butterfly plate has the primary importance and the rear butterfly plate of valve rod rotation that seal mutually with valve body and makes around the rotation of butterfly plate gyration center the second place that in medium channel, medium circulates, butterfly plate sealing cone on butterfly plate seals formation valve seal pair mutually with the valve body metallic sealing section on valve body, butterfly plate sealing cone and valve rod eccentric setting, the center line of described valve body media passage and valve rod center line eccentric setting, butterfly plate sealing cone axially and between the center line of valve body media passage is provided with eccentric angle a, described butterfly plate frame is provided with and regulates butterfly plate sealing cone axially and the controlling device of valve rod distance.
As a modification of the present invention, described controlling device is adjusting screw, and described adjusting screw offsets through butterfly plate frame and butterfly plate.
As a further improvement on the present invention, described adjusting screw has many pieces, and described many pieces of adjusting screw are circumferentially distributed on butterfly plate frame.
As a further improvement on the present invention, described described butterfly plate frame and butterfly plate are by many pieces of set screw Joints.
As a further improvement on the present invention, described set screw is greater than controlling device to the distance at butterfly plate frame center to the distance at butterfly plate frame center.
As a further improvement on the present invention, described butterfly plate is whole eccentric circle taper type, the side surface of eccentric circle frustum forms butterfly plate sealing cone by built-up welding or surfacing high-abrasive material, and it is secondary that described butterfly plate sealing cone and valve body metallic sealing section form described valve seal.
As a further improvement on the present invention, described butterfly plate frame is provided with through hole, and described butterfly plate is provided with boss, and the through hole outer wall interior and boss that described boss is located at butterfly plate frame coordinates with through-hole wall location.
The invention has the beneficial effects as follows, between the center line of butterfly plate sealing cone axis and valve body media passage, be provided with eccentric angle, also increased controlling device, such structure makes butterfly plate good rigidly, amount of deformation is little, can make three eccentric metal hard sealed butterfly damper realize two way sealed, can be just, anti-bidirectional bearing, just or interior leakage all do not occur during reverse pressure-bearing, sealing effect is better, controlling device can regulate the eccentric distance c of butterfly plate sealing surface and valve rod, thereby guarantee to make product sealing more reliable, when sealing surface wear, thereby can regulate the positional distance c of the relative valve rod of butterfly plate sealing cone to guarantee the tight butterfly plate sealing cone of defeating of valve rod transmission by controlling device, the sealing of product is effectively repaired, in addition because sealing pair is all that abrasion resistance alloy makes resistance to erosion, long service life.
Accompanying drawing explanation
The structural representation that accompanying drawing 1 is existing Butterfly plate valve.
The structural representation that accompanying drawing 2 is the embodiment of the present invention.
Accompanying drawing 3 is the structural representation of A-A in accompanying drawing 2.
Accompanying drawing 4 is the structural representation of butterfly plate frame 5 and butterfly plate 3 in accompanying drawing 2.
Accompanying drawing 5 is the structural representation of butterfly plate frame 5 in accompanying drawing 4.
Accompanying drawing 6 is the structural representation of butterfly plate 3 in accompanying drawing 4.
Accompanying drawing 7 is the plan view of butterfly plate 6 in accompanying drawing 6.
In figure, 1, valve body; 11, valve body metallic sealing section; 2, valve rod; 21, valve rod center line; 3, butterfly plate; 31, valve seal is secondary; 311, butterfly plate sealing cone; 32, boss; 4, medium channel; 5, butterfly plate frame; 51, set screw; 52, through hole; 6, controlling device; 61, adjusting screw.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is further illustrated:
By Fig. 2 in conjunction with Fig. 3, 4, 5, 6, shown in 7, a kind of all-metal reversible seals adjustable eccentric butterfly valve firmly, comprise valve body 1, valve rod 2 and butterfly plate 3, in described valve body 1, be provided with the medium channel 4 for medium circulation, described butterfly plate 3 and valve rod 2 are all located in valve body 1, also comprise butterfly plate frame 5, described valve rod 2 is sheathed on butterfly plate frame 5 and with butterfly plate frame 5 and is connected, described butterfly plate 3 is fixed on butterfly plate frame 5, described butterfly plate 3 has the primary importance and the valve rod 2 that seal mutually with valve body 1 and rotates the second place that rear butterfly plate 3 circulates the interior medium of medium channel 4 around butterfly plate 3 gyration center rotations, butterfly plate sealing cone 311 on butterfly plate 3 seals with the valve body metallic sealing section 11 on valve body 1 the valve seal pair 31 forming mutually, butterfly plate sealing cone 311 and valve rod 2 eccentric settings, the center line of described valve body 1 medium channel 4 and valve rod center line 21 eccentric settings, butterfly plate sealing cone 311 axially and between the center line of valve body 1 medium channel 4 is provided with eccentric angle a.Specifically, three bias of butterfly valve refer to: between butterfly plate sealing cone 311 and valve rod 5, have throw of eccentric c; There is eccentric distance e in center line and the valve rod center line 21 of valve body 1 medium channel 4; Butterfly plate sealing cone 311 axially and between the center line of valve body 1 medium channel 4 is provided with eccentric angle a, i.e. and angle eccentric (with reference to accompanying drawing 3), described butterfly plate frame 5 is provided with the controlling device 6 that regulates butterfly plate sealing cone 311 and valve rod 2 distances.Specifically, controlling device is the size apart from c for eccentric adjustment, thereby guarantee that valve rod provides enough thrust to make the wedging of butterfly plate sealing cone in the large conical surface of sealing of valve body, make its butterfly plate when being subject to medium thrust forward or backwards, can not make butterfly plate sealing cone depart from the large conical surface of sealing of valve body and compress, guarantee the reliable sealing that product can be under forward and reverse pressure.Specifically, described controlling device 6 is adjusting screw 61, and described adjusting screw 61 offsets through butterfly plate frame 5 and butterfly plate 3, promotes butterfly plate itself and the gap between butterfly plate frame are strengthened or minimizing, thereby change the size of eccentric c.In particular, described adjusting screw 61 has many pieces, and described many pieces of adjusting screw 61 are circumferentially distributed on butterfly plate frame 5.The invention has the beneficial effects as follows, valve seal countershaft to and the center line of valve body media passage between be provided with eccentric angle, also increased controlling device, such structure makes butterfly plate good rigidly, amount of deformation is little, can make three eccentric metal hard sealed butterfly damper realize two way sealed, can be just, anti-bidirectional bearing, just or interior leakage all do not occur during reverse pressure-bearing, sealing effect is better, controlling device can regulating valve sealing pair and the eccentric distance of valve rod, thereby guarantee to make product sealing more reliable, when sealing surface wear, thereby position that can regulating valve sealing pair by controlling device guarantees the sealability of product.In particular, increased controlling device in the present invention, it is adjustable that such structure makes eccentric c distance, can avoid like this when medium reverse flow, promotes butterfly plate and moves to anti-cone direction, and it is crooked that trace occurs valve rod, and leakage problem appears in valve seal.This product, when delivery test, carries out forward and reverse pressure testing to valve, during forward pressure testing, medium promotes conical seal (contact) face wedging, favourable sealing, but oppositely during pressure testing, medium is the wedge bevel sealing surface of pushing butterfly plate open, leaking appears in valve rod micro-deformation, at this moment can pass through the distance of controlling device eccentric adjustment c, push butterfly plate to valve body sealing surface and be close to sealing, the gap that compensation reverse media pressure causes, make oppositely to seal completely, reach forward and reverse sealing completely; Because eccentric c is adjustable, make the compatibility of butterfly plate and valve body good, as long as the tapering of assurance valve body and butterfly plate is consistent, just can realize sealing, the sealing surface laminating of two identical taperings just can seal completely, the error of eccentric c can, by regulating controlling device to realize, tightly fit its sealing surface.Specifically, as the butterfly plate of changing any same specification get on to realize sealing; If butterfly plate or valve body sealing surface are due to wearing and tearing or damage, again after grinding seal surface, again load onto after butterfly plate frame, regulate the gap after the compensated distance grinding of the eccentric c of space change between butterfly plate and butterfly plate frame also can make it seal completely; By regulating the distance of the space change bias c between butterfly plate and butterfly plate frame to can be completely achieved the wildcard of valve body and butterfly plate, component replaceable, the recoverability after bad seals is little to the requirement on machining accuracy of product.
Described described butterfly plate frame 5 and butterfly plate 3 are by many pieces of set screw 51 Joints.Specifically, adjusting screw is after being adjusted to eccentric c the forward and reverse reliable sealing of assurance product, set screw 51 is tightened butterfly plate and is fixed on butterfly plate frame again, prevent that butterfly plate self from rotating or coming off from butterfly plate frame, make butterfly plate and butterfly plate frame keep being rigidly connected, described set screw 51 is greater than controlling device 6 to the distance at butterfly plate frame 5 centers to the distance at butterfly plate frame 5 centers.The rigidity that such structure can make butterfly plate frame be connected with butterfly plate is better, better transmits the force and moment between butterfly plate and valve rod.Set screw, adjusting screw adopt stainless steel, and assurance product can be realized adjusting reliably.
Between described butterfly plate frame 5 and valve rod 2, be by 4 friction tight (see figure 2)s that are rigidly connected of taper pin, being conducive to like this valve rod is delivered to power or moment on butterfly plate frame, and then be delivered on butterfly plate sealing surface, by the rotation of valve rod, control flexibly the switch motion of valve plate.
Described butterfly plate 3 is whole eccentric circle taper type, and the side surface of eccentric circle frustum forms butterfly plate sealing cone 311 by built-up welding or surfacing high-abrasive material, and described butterfly plate sealing cone 311 forms described valve seal pair 31 with valve body metallic sealing section 11.Specifically, can build-up wear-resistant, corrosion-resistant, exotic material or cemented carbide be as sealing surface, because butterfly plate sealing cone 311 is wear-resisting, corrosion resistant alloys of built-up welding or surfacing high hardness, the sealing surface making resistance to erosion in medium, nor fragile, increased working life of product, because this valve sealing surface also has well reparation property after damaging, make the cost performance of valve high, there are market prospects widely.
Described butterfly plate frame 5 is provided with through hole 52, and described butterfly plate 3 is provided with boss 32, and described boss 32 is located at through hole 52 outer wall interior and boss 32 of butterfly plate frame 5 and is located and coordinate mutually with through hole 52 inwalls.The effect of the boss on butterfly plate is the installation positioning action of butterfly plate and butterfly plate frame, playing the guiding role while regulating the gap between butterfly plate and butterfly plate frame, and butterfly plate boss is also the reinforcement to butterfly plate intensity, such structure can be so that butterfly plate be solid and reliable, indeformable.
Every technician's notice: although the present invention describes according to above-mentioned embodiment, invention thought of the present invention is not limited in this invention, and the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.
Claims (7)
1. an all-metal reversible seals adjustable eccentric butterfly valve firmly, comprise valve body (1), valve rod (2) and butterfly plate (3), in described valve body (1), be provided with the medium channel (4) for medium circulation, described butterfly plate (3) and valve rod (2) are all located in valve body (1), it is characterized in that: also comprise butterfly plate frame (5), described valve rod (2) is sheathed on butterfly plate frame (5) above and is connected with butterfly plate frame (5), described butterfly plate (3) is fixed on butterfly plate frame (5), described butterfly plate (3) has the primary importance and the rear butterfly plate (3) of valve rod (2) rotation that seal mutually with valve body (1) and makes around the rotation of butterfly plate (3) gyration center the second place that in medium channel (4), medium circulates, butterfly plate sealing cone (311) on butterfly plate (3) seals formation valve seal secondary (31) mutually with the valve body metallic sealing section (11) on valve body (1), butterfly plate sealing cone (311) and valve rod (2) eccentric setting, the center line of described valve body (1) medium channel (4) and valve rod center line (21) eccentric setting, butterfly plate sealing cone (311) axially and between the center line of valve body (1) medium channel (4) is provided with eccentric angle a, described butterfly plate frame (5) is provided with the controlling device (6) that regulates butterfly plate sealing cone (311) and valve rod (2) distance.
2. all-metal reversible according to claim 1 seals adjustable eccentric butterfly valve firmly, it is characterized in that described controlling device (6) is adjusting screw (61), and described adjusting screw (61) offsets through butterfly plate frame (5) and butterfly plate (3).
3. all-metal reversible according to claim 2 seals adjustable eccentric butterfly valve firmly, it is characterized in that described adjusting screw (61) has many pieces, and described many pieces of adjusting screw (61) are circumferentially distributed on butterfly plate frame (5).
4. all-metal reversible according to claim 1 seals adjustable eccentric butterfly valve firmly, it is characterized in that described described butterfly plate frame (5) and butterfly plate (3) are by many pieces of set screws (51) Joint.
5. all-metal reversible according to claim 4 seals adjustable eccentric butterfly valve firmly, it is characterized in that described set screw (51) is greater than controlling device (6) to the distance at butterfly plate frame (5) center to the distance at butterfly plate frame (5) center.
6. all-metal reversible according to claim 1 seals adjustable eccentric butterfly valve firmly, it is characterized in that described butterfly plate (3) is whole eccentric circle taper type, the side surface of eccentric circle frustum forms butterfly plate sealing cone (311) by built-up welding or surfacing high-abrasive material, and described butterfly plate sealing cone (311) forms described valve seal secondary (31) with valve body metallic sealing section (11).
7. all-metal reversible according to claim 1 seals adjustable eccentric butterfly valve firmly, it is characterized in that described butterfly plate frame (5) is provided with through hole (52), described butterfly plate (3) is provided with boss (32), and through hole (52) outer wall interior and boss (32) that described boss (32) is located at butterfly plate frame (5) coordinates with through hole (52) inwall location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440924.3A CN104197028B (en) | 2014-09-02 | 2014-09-02 | Adjustable all-metal bidirectional hard seal type eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440924.3A CN104197028B (en) | 2014-09-02 | 2014-09-02 | Adjustable all-metal bidirectional hard seal type eccentric butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104197028A true CN104197028A (en) | 2014-12-10 |
| CN104197028B CN104197028B (en) | 2017-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410440924.3A Active CN104197028B (en) | 2014-09-02 | 2014-09-02 | Adjustable all-metal bidirectional hard seal type eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104197028B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439064A (en) * | 2016-12-07 | 2017-02-22 | 无锡优耐特净化装备有限公司 | Three-eccentric manual butterfly valve for turbine |
| CN111927966A (en) * | 2020-08-28 | 2020-11-13 | 浙江金盾风机股份有限公司 | Three-eccentric sealing butterfly valve |
| CN113490808A (en) * | 2019-02-28 | 2021-10-08 | 株式会社开滋 | Valve body of double-eccentric butterfly valve and double-eccentric butterfly valve |
| CN113976927A (en) * | 2021-10-27 | 2022-01-28 | 三门核电有限公司 | Repair method for triple eccentric butterfly valve |
| CN115654156A (en) * | 2022-11-14 | 2023-01-31 | 大连船用阀门有限公司 | Bidirectional-sealing low-torque triple-eccentric ventilation butterfly valve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE706191A (en) * | 1966-11-08 | 1968-03-18 | ||
| CN2095309U (en) * | 1991-01-09 | 1992-02-05 | 黄作兴 | Adjustable butterfly valve |
| CN2331797Y (en) * | 1997-09-17 | 1999-08-04 | 李尧善 | Stop butterfly valve |
| CN1544835A (en) * | 2003-11-22 | 2004-11-10 | 宣达实业集团有限公司 | Soft sealing butterfly valve |
| CN2916288Y (en) * | 2006-05-26 | 2007-06-27 | 辽宁良工阀门厂 | 3D eccentric two-way metallic hard sealing butterfly valve |
| CN201909041U (en) * | 2011-01-10 | 2011-07-27 | 山东坚龙特种不锈钢股份有限公司 | Novel butterfly valve |
| WO2013066245A1 (en) * | 2011-11-01 | 2013-05-10 | Ab Somas Ventiler | A butterfly valve |
| CN203146844U (en) * | 2013-03-07 | 2013-08-21 | 浙江牧雅阀门制造有限公司 | Ceramic butterfly valve |
| CN204061936U (en) * | 2014-09-02 | 2014-12-31 | 宣达实业集团有限公司 | All-metal reversible seals adjustable eccentric butterfly valve firmly |
-
2014
- 2014-09-02 CN CN201410440924.3A patent/CN104197028B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE706191A (en) * | 1966-11-08 | 1968-03-18 | ||
| CN2095309U (en) * | 1991-01-09 | 1992-02-05 | 黄作兴 | Adjustable butterfly valve |
| CN2331797Y (en) * | 1997-09-17 | 1999-08-04 | 李尧善 | Stop butterfly valve |
| CN1544835A (en) * | 2003-11-22 | 2004-11-10 | 宣达实业集团有限公司 | Soft sealing butterfly valve |
| CN2916288Y (en) * | 2006-05-26 | 2007-06-27 | 辽宁良工阀门厂 | 3D eccentric two-way metallic hard sealing butterfly valve |
| CN201909041U (en) * | 2011-01-10 | 2011-07-27 | 山东坚龙特种不锈钢股份有限公司 | Novel butterfly valve |
| WO2013066245A1 (en) * | 2011-11-01 | 2013-05-10 | Ab Somas Ventiler | A butterfly valve |
| CN203146844U (en) * | 2013-03-07 | 2013-08-21 | 浙江牧雅阀门制造有限公司 | Ceramic butterfly valve |
| CN204061936U (en) * | 2014-09-02 | 2014-12-31 | 宣达实业集团有限公司 | All-metal reversible seals adjustable eccentric butterfly valve firmly |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439064A (en) * | 2016-12-07 | 2017-02-22 | 无锡优耐特净化装备有限公司 | Three-eccentric manual butterfly valve for turbine |
| CN113490808A (en) * | 2019-02-28 | 2021-10-08 | 株式会社开滋 | Valve body of double-eccentric butterfly valve and double-eccentric butterfly valve |
| CN111927966A (en) * | 2020-08-28 | 2020-11-13 | 浙江金盾风机股份有限公司 | Three-eccentric sealing butterfly valve |
| CN113976927A (en) * | 2021-10-27 | 2022-01-28 | 三门核电有限公司 | Repair method for triple eccentric butterfly valve |
| CN115654156A (en) * | 2022-11-14 | 2023-01-31 | 大连船用阀门有限公司 | Bidirectional-sealing low-torque triple-eccentric ventilation butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104197028B (en) | 2017-02-15 |
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Denomination of invention: Adjustable all-metal bidirectional hard seal type eccentric butterfly valve Effective date of registration: 20171215 Granted publication date: 20170215 Pledgee: Zhejiang bank Wenzhou Limited by Share Ltd Yongjia branch Pledgor: Xuanda Industrial Group Co., Ltd. Registration number: 2017330000292 |