CN102844598A - Valve element of butterfly valve - Google Patents
Valve element of butterfly valve Download PDFInfo
- Publication number
- CN102844598A CN102844598A CN2010800661729A CN201080066172A CN102844598A CN 102844598 A CN102844598 A CN 102844598A CN 2010800661729 A CN2010800661729 A CN 2010800661729A CN 201080066172 A CN201080066172 A CN 201080066172A CN 102844598 A CN102844598 A CN 102844598A
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- Prior art keywords
- spool
- substrate
- valve
- peripheral
- cylindrical part
- Prior art date
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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
- F16K1/16—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
- F16K1/222—Shaping of the valve member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Sliding Valves (AREA)
Abstract
Provided is a valve element of a butterfly valve, wherein the rigidity of the valve element is increased, the operation torque of the butterfly valve is reduced, and the operation of the butterfly valve is facilitated. A cylindrical portion extending diametrically is formed on the center of a disk-shaped base plate constituting a valve element so that the cylindrical portion protrudes on the front and back sides of the base plate. A valve shaft insertion hole is provided in the cylindrical portion, and a plurality of circular ribs intersecting and in contact with the cylindrical portion are coaxially projected on the front and back sides of the base plate. Furthermore, the outermost peripheral rib is disposed along the edge of the base plate, and the outer diameter of the center of the cylindrical portion is larger than the outer diameter of an end of the cylindrical portion.
Description
Technical field
The present invention relates to a kind of spool of the fly valve that is used for opening and closing, regulate at the pipeline that piping system flows through water supply, gas, wet goods fluid.
Background technique
In the past; In valve cap cylindraceous so that valve core rotation freely mode axle support plate disc shape spool, through being installed in contact and the simple structure of separating to come the fly valve that pipeline is opened and closed between the seat ring that constitutes by resilient member and the spool outer circumferential face on the valve cap inner peripheral surface, so be widely used in the flow control of various fluids.Usually; Fly valve has such function: make valve core rotation through utilizing driver drives valve rod rotations such as motor, pressure cylinder; Make the spool peripheral part and with separating to come pipeline is opened and closed with respect to the seat ring contact that is installed in week in the valve cap; In addition, utilize the gap length between spool peripheral part and the seat ring to change flow path area, thus the adjustment fluid flow.
It is to realize through the spool peripheral part and as the crimping between the elastomeric seat ring that valve cuts out, but in the process that spool opens and closes, is a reason that produces valve operation torque because of the spool peripheral part contacts the interaction force that produces with seat ring.Thereby through reducing this interaction force, the operation torque of valve reduces, and valve operation transfiguration is prone to.And spool bears the pressure of flowing fluid in pipeline, and in the position of having closed stream fully, the whole fluids in the pipeline are pressed and are carried on spool face, and the hydrodynamic pressure that spool is applied becomes maximum.Because bear the spool distortion of hydrodynamic pressure; Therefore, entirely shut in order to make pipeline, the valve base sealing position of spool under the distortion of spool and seat ring needs the overlapping part of inferior limit (sealing strip); In order to keep valve base sealing property, the rigidity that spool is had relatively high expectations.
As the method that improves the spool rigidity, can deal with through the thickness that increases spool usually, but because the quality of spool also increases, therefore, weight becomes big when cost raises, makes troubles to operation.Therefore, in order to address this problem, proposed along fluid flow through direction spool face be provided with rib method (patent documentation 1), be set as valve core inside hollow and on structural mechanics, guarantee method (patent documentation 2) of rigidity etc.Yet, on spool, be provided with in the method for rib, though rigidity is higher for the stress of the configuration direction of rib, have on the direction of predetermined angle the rigidity step-down of spool with respect to rib.For example; Flow through the identical direction of direction under the situation that disposes rib on the spool at edge and fluid; If (for example becoming the direction of 45 degree with rib) is under pressure from the direction different with flowing through direction; Then might cause spool deflection, the sealing station place between spool peripheral part and seat ring to produce dislocation, the reduction of valve base sealing property.In addition, under the less situation of fly valve,, therefore, can't spool be formed at valve core inside sometimes the shape on the such structural mechanics of blank part is set because the size of spool is restricted.
On the other hand, because of the crimping of spool peripheral part and slide on the rotating torques that frictional force influence that seat ring produces makes the valve rod of valve core rotation.Particularly, under the situation of, spool easy deformation lower in the rigidity of spool, from keeping bubble-tight necessity, need to increase the area of contact between spool peripheral part and the seat ring, so frictional force increases, it is big that rotating torques becomes.Thereby, in order to improve the operability of fly valve, reduce the energy of the motor that makes the valve rod rotation, importantly improve the spool rigidity, and improve the shape of spool peripheral part, thereby the frictional force between minimizing and the seat ring suppresses the rotating torques of valve rod.Therefore, having proposed to supply the shape orientation of the chevron sealed department on the inner peripheral surface that is arranged on seat ring of spool outer circumferential face butt to supply central authorities between hub portion that valve rod runs through to form with hub portion is the curve shape (patent documentation 3) of the cosine function of basic point.
Patent documentation 1: TOHKEMY 2004-239343 communique
Patent documentation 2: japanese kokai publication hei 9-60751 communique
Patent documentation 3: japanese kokai publication sho 55-142169 communique
Summary of the invention
Problem of the present invention is that a kind of operation torque that improves the rigidity of spool and reduce valve is provided, the valve operation is become is easy to the spool of fly valve.
The 1st technological scheme is a kind of spool of fly valve; It is characterized in that; To be formed on the center of this substrate along the cylindrical part that the diametric(al) of the discoideus substrate that constitutes spool is extended with mode at substrate surface and back side protuberance; In this cylindrical part, wear the valve rod patchhole, and a plurality of circular rib that will intersect with this cylindrical part and contact are formed on the surface and the back side of substrate with the mode that is the concentric circles protuberance.
The 2nd technological scheme is characterised in that, the rib of most peripheral is set along the edge of substrate.
The 3rd technological scheme is characterised in that, the external diameter of the central authorities of cylindrical part is made as the external diameter greater than the end.
The 4th technological scheme is characterised in that; The central portion thickness of substrate is made as maximum; The thickness of the peripheral part of substrate is made as minimum; And, that the angle of inclination of the part of being separated by the circular rib of concentric circles of substrate surface is made as substrate surface with below the angle of inclination adjacent part of central side.
The invention is characterized in, constitute the peripheral part of spool by the part of sphere, the straight line that utilizes tangent line with respect to the outermost circumference end of peripheral part to have 30 degree～50 degree angles links the circular rib of most peripheral and the spool peripheral part that is made up of sphere.
According to the present invention, because the cylindrical part that will extend along the diametric(al) of the discoideus substrate that constitutes spool is formed on the center of this substrate with the mode of swelling at the substrate surface and the back side, therefore; This cylindrical part becomes the skeleton of burden spool intensity; And, because a plurality of circular rib that will extend with concentric circles are with crossing with this cylindrical part and contact and the mode of swelling is formed on the surface and the back side of substrate, therefore; In becoming in the cross section of any angle of spool with respect to the center spool line; Can both obtain roughly uniform section factor, the rigidity of spool is roughly even in whole spool, thereby can obtain the higher spool of rigidity.Because cylindrical part becomes the fulcrum of circular rib to the pressure that bears, so terminate in minimum distortion.In addition,, can improve near the rigidity of the spool peripheral part of valve rod hole, therefore can improve the sealing stability of valve rod seat ring on every side through cylindrical part being intersected with the circular rib of spool peripheral part and contacting.
Central portion thickness through with substrate is made as maximum; The thickness of the peripheral part of this substrate is made as minimum; And the angle of inclination that makes the part of being separated by the circular rib of concentric circles of substrate surface is made as less than substrate surface and the angle of inclination adjacent part of central side, makes being tilted between each rib of par of spool remove to become cone shape from center spool outward perimembranous, and; Because this is tilted in center maximum and outward perimembranous and goes and diminish gradually; Therefore, make cross-sectional strength equalization to pressure, and can lightweight.
Straight line through utilizing tangent line with respect to the outermost circumference end of peripheral part to have 30 degree～50 degree angles links the circular rib of most peripheral and the spool peripheral part that is made up of sphere; Close or from being closed to when moving from being opened at spool with opening; Suppress to constitute the elastomer of seat ring; Thereby can eliminate the resistance of the spool that the protuberance because of surface of elastomer produces, reduce the torque drag that the interaction by spool and seat ring causes.In addition, making edge portion because of spool pull the elastomeric fatigue that is produced to elastomer becomes inferior limit, can seek to improve the switching durability of valve.And, owing to can increase the area of contact between spool and the seat ring, and therefore, even, also can keep seal contacting with spool because of time lapse under the situation that in seat ring, has produced distortion.
Description of drawings
Fig. 1 is the plan view (A) and the Y-Y sectional view (B) of fly valve.
Fig. 2 is the 1st embodiment's a spool stereogram.
Fig. 3 is the central cross-sectional view of cylindrical part along center line.
Fig. 4 is the plan view of the 1st embodiment's spool.
Fig. 5 is the central cross-sectional view that becomes 90 degree with center line of the 1st embodiment's spool.
Fig. 6 is the central cross-sectional view that becomes 45 degree with center line of the 1st embodiment's spool.
Fig. 7 is the central cross-sectional view that becomes 30 degree with center line of the 1st embodiment's spool.
Fig. 8 is the schematic diagram that is used to reduce the valve core rotation torque.
Fig. 9 is the amplification view of spool peripheral part.
Figure 10 is the 2nd embodiment's a spool stereogram.
Embodiment
Below, use description of drawings mode of execution of the present invention.Reference character among Fig. 1 (1) is the fly valve main body, and it has the stream of open circles tubular, utilizes by valve rod (3), the supporting of (4) axle for rotating discoideus freely spool (2) stream of open circles tubular to be opened and closed.Hollow cylinder portion inner peripheral surface at valve body (1) is equipped with the seat ring (5) that is made up of elastomer, makes outer circumferential face contact this seat ring (5) of spool (2) and leaves this seat ring (5), and valve is opened and closed.
With reference to Fig. 2, spool (2) is made up of discoideus substrate (6), has the cylindrical part (7) that supplies valve rod to insert at the center of substrate (6).The shape of cylindrical part (7) for heaving from the surface and the back side of substrate (6).The shape of this cylindrical part (7) can increase the section factor on center spool line (8) direction, is directed against the rigidity from the pressure of the direction vertical with center spool line (8) thereby can improve spool.Cylindrical part (7) is made as and passes through hollowly, and it is hollow perhaps to be made as two end part.Which kind of situation no matter, the central authorities of this cylindrical part are easy to moulding aspect casting.In addition, can utilize minimum material to obtain sufficient rigidity, thereby can make the spool lightweight.And; Fig. 2 is the shape that has the cylindrical part (7) that supplies the valve rod insertion at the center of substrate (6); But be not limited to this shape, also can be center spool line (8) with the center line of cylindrical part, promptly have a spool of the so-called eccentric type of certain distance with the spin axis of valve rod.
Fig. 3 representes the central cross-sectional view along center spool line (8) of cylindrical part (7).In order to improve the rigidity of spool (2), the sectional shape of cylindrical part (7) is made as, and the external diameter of core (9) in addition, accompanies greater than the external diameter (10) of valve rod patchhole therewith, and the internal diameter of core (11) is greater than the internal diameter (12) of valve rod patchhole.In addition; As shown in Figure 5, in the center spool sectional view that becomes 90 degree with center spool line (8), because the sectional area of cylindrical part (7) is bigger; The spool section factor is bigger; Therefore, the power on the direction (direction or lower direction in Fig. 3 being) that becomes 90 degree with center line can make the distortion of spool minimum.In addition,, therefore, unnecessary thickness needn't be set, can make the spool lightweight owing to be directed against the cross-sectional strength equalization of pressure.
According to the size of spool, the external diameter with core is made as the external diameter less than the valve rod patchhole sometimes.Its reason is, though the external diameter of core diminishes corresponding to the size of spool, considers from the aspect of intensity, more than the rugosity of valve rod need maintain to a certain degree.In this case, also less than the internal diameter of valve rod patchhole, perhaps the blank part of core disappears the internal diameter of core.
Rib (13) is provided with a plurality of (Fig. 2, Fig. 4) with concentric circles on the surface of substrate (6) and the back side, the end through making each rib (13) and the engage sides of cylindrical part (7) become the spool of rigid uniform.Fig. 5, Fig. 6, Fig. 7 are expression becomes 30 degree, 45 degree, 90 degree with the center spool line of the spool of Fig. 4 central cross-sectional view; But the section factor except that cylindrical part in each cross section is close; When spool (2) has been applied the pressure of fluid; Because by equalization, so spool can not be out of shape in whole spool for the stress of spool (2).
The rib (13) of most peripheral is set through the edge along substrate (6); The end of rib is engaged in the side of cylindrical part (7); Can improve near the valve rod patchhole, promptly make the rigidity that is applied in the part of maximum, force under the situation of valve core rotation, thereby can improve the sealing stability of spool (2) and seat ring (5).
Then, use Fig. 5 that the shape of substrate (6) is described.Fig. 5 is expression becomes 90 degree with center spool line (8) a center spool sectional view.The sectional shape of substrate (6) be thick more near cylindrical part (center) more, more near the thin more shape of acies (periphery).In addition; If the substrate surface that will be separated by rib (13) from a face near cylindrical part begin to be called in order face 1, face 2 ..., face (n-1), face n; With each face with respect to the angle of inclination of substrate center be made as α 1, α 2 ..., α (n-1), α n, then the angle of inclination of substrate become α 1 >=α 2 >=... the shape of >=α n-1 >=α n.Through being set as this shape, to the cross-sectional strength of pressure by equalization, thereby can lightweight.
Fig. 8 representes the edge shape that utilizes the spool peripheral part is reduced the schematic diagram that the rotating torques of spool describes.Spool carries out closing operation to the direction of arrow, perhaps carries out opening operation round about.For example under the situation of the operation of carrying out closing along the direction of arrow of Fig. 8 spool, the surface of elastomer protuberance of the formation seat ring of being pushed by the edge portion (15) of spool becomes the obstruction of spool closing motion.Spool edge portion of the present invention (15) connects the sphere processing portion and the rib of the peripheral part (16) of spool through the straight line that utilizes tangent line with respect to the outermost circumference end of peripheral part (16) to have 30 degree～50 degree angles; The elastomeric protuberance that suppresses spool edge back makes the resistance that produces because of elastomeric protuberance become inferior limit.Thus, eliminate resistance, reduce the torque drag that the interaction force by spool and seat ring brings spool.In addition, make edge portion become inferior limit, improve the switching durability of valve the elastomeric elastomeric fatigue that is produced that pulls because of spool.
Fig. 9 representes the amplification cross section of spool peripheral part.The straight line that the angle [alpha] of utilizing with the tangent line of the outermost circumference end of the peripheral part (16) of spool is shown is 30 degree～50 degree links sphere processing portion and the shape of rib of the peripheral part (16) of spool.Angle [alpha] utilizes the edge portion (15) of spool to influence elastomeric protuberance, through this angle being made as 30 degree～50 degree, keeps the tightness of spool, and makes the resistance that produces because of elastomeric protuberance become inferior limit.That is, if this angle is spent less than 30, then resistance increases, spends greater than 50 as if this angle, and it is stable then might can't to keep sealing.In addition, angle [alpha] most preferably is 45 degree.
Description of reference numerals
1, main body; 2, spool; 3, upper valve rod; 4, lower valve rod; 5, seat ring; 6, substrate; 7, cylindrical part; 8, center spool line; 9, core external diameter; 10, the external diameter of valve rod patchhole; 11, the internal diameter of core; 12, the internal diameter of valve rod patchhole; 13, rib; 14, the ridge of seat ring; 15, edge portion; 16, peripheral part.
Claims (according to the modification of the 19th of treaty)
1. the spool of (after revising) a kind of fly valve is characterized in that,
To be formed on the center of this substrate along the cylindrical part that the diametric(al) of the discoideus substrate that constitutes spool is extended with mode at substrate surface and back side protuberance; In this cylindrical part, wear the valve rod patchhole; And a plurality of circular rib that will intersect with this cylindrical part and contact are formed on the surface and the back side of substrate with the mode that is the concentric circles protuberance
The central portion thickness of substrate is made as maximum; The thickness of the peripheral part of substrate is made as minimum; And, that the angle of inclination of the part of being separated by the circular rib of concentric circles of substrate surface is made as substrate surface with below the angle of inclination adjacent part of central side.
2. the spool of fly valve according to claim 1 is characterized in that, the rib of most peripheral is set along the edge of substrate.
3. the spool of fly valve according to claim 1 and 2 is characterized in that, the external diameter of the central authorities of cylindrical part is made as the external diameter greater than the end.
4. (deletion)
5. (revise the back) and, it is characterized in that according to the spool of each described fly valve in the claim 1～3,
Constitute the peripheral part of spool by the part of sphere, the straight line that utilizes tangent line with respect to the outermost circumference end of peripheral part to have 30 degree～50 degree angles links the circular rib of most peripheral and the spool peripheral part that is made up of sphere.
Claims (5)
1. the spool of a fly valve is characterized in that,
To be formed on the center of this substrate along the cylindrical part that the diametric(al) of the discoideus substrate that constitutes spool is extended with mode at substrate surface and back side protuberance; In this cylindrical part, wear the valve rod patchhole, and a plurality of circular rib that will intersect with this cylindrical part and contact are formed on the surface and the back side of substrate with the mode that is the concentric circles protuberance.
2. the spool of fly valve according to claim 1 is characterized in that,
The rib of most peripheral is set along the edge of substrate.
3. the spool of fly valve according to claim 1 and 2 is characterized in that,
The external diameter of the central authorities of cylindrical part is made as the external diameter greater than the end.
4. according to the spool of each described fly valve in the claim 1～3, it is characterized in that,
The central portion thickness of substrate is made as maximum; The thickness of the peripheral part of substrate is made as minimum; And, that the part angle of inclination of being separated by the circular rib of concentric circles of substrate surface is made as substrate surface with below the angle of inclination adjacent part of central side.
5. according to the spool of each described fly valve in the claim 1～4, it is characterized in that,
Constitute the peripheral part of spool by the part of sphere, the straight line that utilizes tangent line with respect to the outermost circumference end of peripheral part to have 30 degree～50 degree angles links the circular rib of most peripheral and the spool peripheral part that is made up of sphere.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2010/056594 WO2011128974A1 (en) | 2010-04-13 | 2010-04-13 | Valve element of butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102844598A true CN102844598A (en) | 2012-12-26 |
| CN102844598B CN102844598B (en) | 2014-03-12 |
Family
ID=43952804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080066172.9A Expired - Fee Related CN102844598B (en) | 2010-04-13 | 2010-04-13 | Valve element of butterfly valve |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4659927B1 (en) |
| KR (1) | KR101476518B1 (en) |
| CN (1) | CN102844598B (en) |
| WO (1) | WO2011128974A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109073093A (en) * | 2016-05-17 | 2018-12-21 | 株式会社三国 | Valve gear |
| CN111810657A (en) * | 2019-04-10 | 2020-10-23 | 乔治费歇尔管路系统公开股份有限公司 | Butterfly valve |
| CN112360997A (en) * | 2020-10-27 | 2021-02-12 | 祥安消防科技有限公司 | Fire control butterfly valve of high gas tightness |
| CN113614427A (en) * | 2019-03-26 | 2021-11-05 | Ckd株式会社 | Butterfly valve |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013010123A1 (en) * | 2013-06-18 | 2014-12-18 | Erhard Gmbh & Co. Kg | Armature for shutting off or regulating a medium |
| US11703129B2 (en) | 2019-02-28 | 2023-07-18 | Kitz Corporation | Valve disk of double eccentric butterfly valve, and double eccentric butterfly valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0960751A (en) * | 1995-08-22 | 1997-03-04 | Kurimoto Ltd | Housing structure for high-temperature high-pressure fluid valve |
| CN1519496A (en) * | 2003-02-05 | 2004-08-11 | 株式会社巴技术研究所 | Valve body of miter valve |
| JP2007032683A (en) * | 2005-07-26 | 2007-02-08 | Toyo Valve Co Ltd | Butterfly valve |
| US20080168965A1 (en) * | 2007-01-16 | 2008-07-17 | Hitachi, Ltd. | Butterfly Valve Device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0362269A (en) * | 1989-07-31 | 1991-03-18 | Nec Corp | Method and device for approximating line image |
| JPH0362269U (en) * | 1989-10-23 | 1991-06-18 | ||
| JPH0564576A (en) * | 1991-09-06 | 1993-03-19 | Tabai Espec Corp | Column type culturing device |
| JPH0564576U (en) * | 1992-02-07 | 1993-08-27 | 株式会社巴技術研究所 | Butterfly valve disc |
-
2010
- 2010-04-13 CN CN201080066172.9A patent/CN102844598B/en not_active Expired - Fee Related
- 2010-04-13 JP JP2010529586A patent/JP4659927B1/en not_active Expired - Fee Related
- 2010-04-13 WO PCT/JP2010/056594 patent/WO2011128974A1/en active Application Filing
- 2010-04-13 KR KR1020127028467A patent/KR101476518B1/en active IP Right Grant
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0960751A (en) * | 1995-08-22 | 1997-03-04 | Kurimoto Ltd | Housing structure for high-temperature high-pressure fluid valve |
| CN1519496A (en) * | 2003-02-05 | 2004-08-11 | 株式会社巴技术研究所 | Valve body of miter valve |
| JP2007032683A (en) * | 2005-07-26 | 2007-02-08 | Toyo Valve Co Ltd | Butterfly valve |
| US20080168965A1 (en) * | 2007-01-16 | 2008-07-17 | Hitachi, Ltd. | Butterfly Valve Device |
| CN101225773A (en) * | 2007-01-16 | 2008-07-23 | 株式会社日立制作所 | Butterfly valve device |
| JP2008175064A (en) * | 2007-01-16 | 2008-07-31 | Hitachi Ltd | Butterfly valve device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109073093A (en) * | 2016-05-17 | 2018-12-21 | 株式会社三国 | Valve gear |
| CN109073093B (en) * | 2016-05-17 | 2020-04-10 | 株式会社三国 | Valve device |
| CN113614427A (en) * | 2019-03-26 | 2021-11-05 | Ckd株式会社 | Butterfly valve |
| CN113614427B (en) * | 2019-03-26 | 2023-09-05 | Ckd株式会社 | butterfly valve |
| CN111810657A (en) * | 2019-04-10 | 2020-10-23 | 乔治费歇尔管路系统公开股份有限公司 | Butterfly valve |
| CN111810657B (en) * | 2019-04-10 | 2024-02-20 | 乔治费歇尔管路系统公开股份有限公司 | Butterfly valve |
| CN112360997A (en) * | 2020-10-27 | 2021-02-12 | 祥安消防科技有限公司 | Fire control butterfly valve of high gas tightness |
| CN112360997B (en) * | 2020-10-27 | 2022-08-09 | 祥安消防科技有限公司 | Fire control butterfly valve of high gas tightness |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011128974A1 (en) | 2011-10-20 |
| CN102844598B (en) | 2014-03-12 |
| KR101476518B1 (en) | 2014-12-24 |
| JPWO2011128974A1 (en) | 2013-07-11 |
| KR20130040852A (en) | 2013-04-24 |
| JP4659927B1 (en) | 2011-03-30 |
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