CN1519496A - Valve body of miter valve - Google Patents
Valve body of miter valve Download PDFInfo
- Publication number
- CN1519496A CN1519496A CNA031493262A CN03149326A CN1519496A CN 1519496 A CN1519496 A CN 1519496A CN A031493262 A CNA031493262 A CN A031493262A CN 03149326 A CN03149326 A CN 03149326A CN 1519496 A CN1519496 A CN 1519496A
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- axis
- cross rib
- fly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
Abstract
A valve body of a butterfly valve is provided to extremely thin the thickness of a base disc of the valve body and to be lightweight by reducing the weight of the whole valve body. Boss unitsb of a holefor a valve rod are projected outward and mounted at upper and lower sides of a Y-axis of a disc-shaped valve body. Plural horizontal ribs with the predetermined height are extended in the direction of an X-axis and formed on the surface of a nozzle of the valve body and a rear side of an orifice.
Description
Technical field
The present invention relates to a kind of valve body of opening, closing the fly valve of the pipeline that fluid flows through.
Background technique
Past, the known various fly valves of closing, control the pipeline that fluid flows through that are used to open.Fly valve is can rotate freely the earth's axis to support discoideus valve body in valve body cylindraceous, and the running shaft of this valve body extends outside the valve body and is connected to operating device (actuator) to be gone up and to be driven in rotation.Valve body is positioned at the central part of valve body and parallel with the pipeline direction under full-gear, become the principal element and the convection cell that reduce flow path area and produce resistance.The resistance factor of the valve body that works as convection cell, except the flow path area that is caused owing to valve body thickness reduces, also to consider the fluid resistance that Kaman's vortex (カ Le マ Application Vortex) facial by the circumferential end of valve body and that the formed end difference of boss part produces is caused.
As the shape of valve body, shown in Fig. 7～9, known have a following shape, that is, valve body 1 as base shape and have the thickening part 2 that is used to improve intensity on its outer surface, and makes boss part 3 overstrikings with flat board.If from reducing the purpose of fluid resistance, dull and stereotyped thickness is thin more then favourable more, but the distortion in order to prevent from when the closing pressure fluid to produce for the thrust of revolting moving fluid must have certain thickness.Thereby in order to strengthen the body strength of Fig. 1, model utility is registered in No. 2523948 communique and disclose the structure that stiffening plate is installed on boss part.Fluid pressure action is in the whole compression area of valve body, its thrust is in the five equilibrium ground effect on X-axis, Y direction of valve body central part, in this known valve body, existence is not enough with respect to the reinforcement that acts on the stress on the X-axis, in fact then can not bring into play the problem of any effect for the power that acts on Y direction.
In addition,, disclose such structure in the real fair 4-29164 communique, promptly when contacting, necessarily below the aperture valve body has been contacted simultaneously with seat ring at valve body outer annulus edge portion and seat ring (seat ring) trying every possible means in shape of the outer annulus edge portion of valve body.But in this structure, valve body outer annulus edge portion forms heavy wall, and weight is increased, and simultaneously, it is not enough that the intensity of valve body central part becomes.
Patent documentation 1: model utility is registered communique No. 2523948
Patent documentation 2: real fair 4-29164 communique
Summary of the invention
The object of the present invention is to provide a kind of valve body of fly valve, the flow coefficient when making the valve standard-sized sheet can not reduce, and reduces the fluid resistance when standard-sized sheet and middle aperture, makes the weight of valve body lighter simultaneously.
In order to solve above-mentioned problem, scheme of the present invention, it is characterized in that swell is provided with the valve rod hole boss part outside discoideus valve body Y direction upward and downward, on the nozzle side of this valve body surface and the side back side, hole, form along a plurality of cross ribs of the specified altitude of X-axis direction extension.
Feature of the present invention also is, utilize vertical rib to connect valve rod hole boss part up and down, with this vertical rib is that starting point forms cross rib, its feature also is, in a plurality of cross ribs, the cross rib and the X-axis that are positioned at central authorities be arranged in parallel, at this cross rib of upper and lower of cross rib that is positioned at central authorities with angle θ to the inclination of the cross rib direction of central authorities and be provided with.
Its feature also is, the height of cross rib reduces with angle beta and forms the gradient towards the valve body periphery, and its feature also is, on the surface of valve body, is that the summit has the inclination that the tilt angle is α with respect to X-axis with the Y-axis.
Description of drawings
Fig. 1 is the stereogram according to valve body of the present invention;
Fig. 2 is the front view according to valve body of the present invention;
Fig. 3 is the side view according to valve body of the present invention;
Fig. 4 is the IV-IV sectional view among Fig. 2;
Fig. 5 is the planimetric map of valve body;
Fig. 6 is the VI-VI sectional view among Fig. 2;
Fig. 7 is the front view of known valve body of past;
Fig. 8 is the central longitudinal sectional view of known valve body of past;
Fig. 9 is the planimetric map of known valve body of past;
Figure 10 is the plotted curve that the pressure reduction to valve body according to the present invention and existing valve body compares;
Figure 11 is the plotted curve that the flow to valve body according to the present invention and existing valve body compares;
Figure 12 is the plotted curve that the Cv value to valve body according to the present invention and existing valve body compares.
Wherein, description of reference numerals is as follows:
10, valve body
11, top valve rod hole
12, bottom valve rod hole
13, top valve rod hole boss part
14, bottom valve rod hole boss part
15, vertical rib
16, cross rib
17, cross rib
Embodiment
Below, describe the preferred embodiments of the present invention in detail.Feature of the present invention is, swell is provided with the valve rod hole boss part outside as the Y direction upward and downward of the valve shaft direction of valve body, respectively, the a plurality of cross ribs that extend to the primary side direction from boss part are set on the nozzle side surface of valve body, and on the side back side, the hole of valve body, be provided with from the Y-axis being a plurality of cross ribs that the boss part of center Rotate 180 ° is extended to the primary side direction, utilize rib to improve the intensity of valve body, reduce the thickness of valve body, to alleviate the weight of valve, simultaneously, can reduce fluid resistance and increase flow, and then, reduce the current difference of nozzle side and hole side and be suppressed at the unbalance torque of carrying on the valve body.
The boss part that disposes up and down in Y direction, couple together by vertical rib, simultaneously, nozzle side surface and the laterodorsal cross rib in hole are configurations like this, be that the cross rib of starting point central part disposes along X-axis direction with vertical rib promptly, it is parallel with the cross rib of central part or dispose in the approaching mode of angle θ to be positioned at the cross rib up and down of cross rib of central part.And then cross rib preferably has the tilt angle that angle is β with respect to the thickness direction central plane of valve body.In addition, constitute the circular plate of valve body, its surface is that the summit is the plane of inclination of α with respect to X-axis formation tilt angle with the Y-axis, and valve rod hole boss part and cross rib are set on Y-axis.
Embodiment
With reference to Fig. 1～Fig. 6, the 10th, the valve body of middle heart-shaped fly valve based on circular plate shape, as shown in Figure 6, is that the center has the inclined surface that angle is α with respect to X-axis with the Y-axis.Upper and lower settings in Y-axis is used to form the boss part 13,14 of valve rod hole up and down of valve rod hole 11,12 up and down, utilizes vertical rib 15 that two boss part are coupled together.In addition, in this manual, Y-axis is called the valve shaft as the valve body rotary middle spindle, and X-axis is called the axle at valve body center and Y-axis quadrature, and the Z axle is called the axle with X-axis quadrature and the planar central by the valve body parallel with Y-axis.
On the nozzle side surface of valve body 10, form a plurality of cross rib 16a, 16b, 16c.Cross rib has certain altitude from valve body surface, is starting point with aforementioned vertical rib 15, extends to primary side direction and X-axis almost parallel ground, and near the fluid that flows through the valve body surface, its direction is subjected to the control of cross rib.In illustrated embodiment, form three cross ribs, the cross rib 16b of central authorities extends along X-axis, its cross rib 16a, 6c up and down has such inclination, promptly with respect to X-axis with angle θ gradually near the cross rib 16b of central authorities.In addition, the surface of each cross rib forms with the tilt angle that has angle beta with respect to X-axis and towards the mode that the height of primary side reduces.
In addition, on the side back side, the hole of valve body, same with aforementioned nozzle side surface under the state that with valve shaft Y is center Rotate 180 °, forming with vertical rib 15 be a plurality of cross rib 17as, 17b, the 17c of starting point to the extension of primary side direction.Cross rib 17 forms three in illustrated embodiment.The laterodorsal cross rib 17 in hole, the same with the cross rib on nozzle side surface, configuration in such a manner, promptly the height of cross rib tilts, reduces gradually with angle θ, and simultaneously, cross rib 17a, 17c are with the cross rib of angle beta near central authorities up and down.
In addition, the surface of valve body, the back side, be when closing valve, being the surface in the face of the face of primary side, the face of facing primary side is the back side, nozzle side is meant half part (half side for the right side in Fig. 1) of the valve body that rotates to primary side when valve body is driven valve, the hole side is to point to half part of the valve body of primary side direction rotation (being that a left side is half side in Fig. 1).
Have certain altitude by three cross ribs 16 that make the nozzle side surface, utilize these cross ribs 16 to control near the direction of the fluid that flows through the valve body surface.The cross rib 16b of central authorities, the Peak Flow Rate that is positioned at pipe is partly located and Peak Flow Rate is divided into two, and makes its flow velocity acceleration.Owing to tilt towards the cross rib 16b of central authorities at cross rib 16a, the 16c of the configuration up and down of the cross rib 16b of central authorities, so that near the fluid of the low-speed region the tube wall towards the cross rib 16b of central authorities, under the state that is introduced into the flow velocity that quickens by this cross rib 16b, its speed is increased.With respect to fluid, valve rod hole becomes flow path resistance with boss part 13,14 up and down, and the fluid that collides with boss part produces eddy current in the primary side of boss, further increases fluid resistance.Relative therewith, the eddy current that three cross ribs 16 produce with respect to the primary side in boss part plays the effect of rectification, has reduced the generation of eddy current.As a result, cross rib of the present invention, near the flow velocity in will managing valve body cuts off, rectification, and the flow direction control that utilizes flank to have will replenish the fluid resistance of tube wall, the fluid resistance of valve body surface, have the effect of the whole fluid resistance that reduces valve.
Only be made of flat board under the situation of valve body, can obtaining necessary wall thickness by calculating, the stress that the valve body central part produces is the highest, is necessary to adopt and the corresponding wall thickness of this stress.In the present invention, by lengthening as far as possible up and down valve rod hole with the length of boss part 13,14, thereby increased the section factor of boss part, play the effect of the wall thickness that reduces the valve body central part.The existence of vertical rib 15 can strengthen the effect of boss part.In addition, three cross ribs at the surface of valve body and the back side have the function that can guarantee the intensity on the Y direction, play the effect that reduces dull and stereotyped wall thickness.With boss part 13,14, vertical rib 15, cross rib 16,17, can realize high strength and the lightest valve body by valve rod hole about the configuration.
By rib is set, the flow path area when having reduced the fly valve standard-sized sheet.The fluid resistance that this means valve self increases, thereby, the resistance of the valve when having increased standard-sized sheet.But the fluid resistance during the valve standard-sized sheet is not only the area of contour of valve body, and because the Kaman's vortex that produces in the wake flow portion of the ladder of the periphery front end that is arranged in the boss part that is arranged on valve body and plectane has produced the fluid resistance also bigger than area of contour.Valve body of the present invention, because the existence of cross rib etc., though area of contour self is compared with the valve body that does not have rib have been increased, but, the cross rib that is arranged on boss part has played aforesaid rectification effect, increased the flow of pipe central part, thereby, can with increase the adverse effect that area of contour causes owing to rib and offset.
Fly valve generally transfers by dextrorotation and cuts out, and under the situation that the fluid in pipe arrangement is flowing, observes from valve shaft side (on the Y-axis), and in Fig. 1, the left side is positioned at primary side, and the right side is positioned at primary side.Along with the increase of flow velocity, force the valve body left side to leave primary side, thereby fluid resistance increase, the flow velocity decline (effect in hole) of this part.On the contrary, the right side of valve body because in primary side, so primary side does not have resistance, utilizes the inclination (aperture) of valve body self to make flow velocity quicken (effect of nozzle).As a result, in hole side and nozzle side, the flow velocity difference in the primary side generation region of no pressure of valve body hole side, becomes the reason of unbalance torque.In the present invention, the valve body right side is configured on the primary side in the hole side, be configured on the primary side in nozzle side, thereby, utilize cross rib to the direction rectification of the wake flow of hole side to pipe central authorities, in nozzle side, cross rib reduces its inflow velocity as resistance.As a result, compare with the valve body that does not have rib, valve body of the present invention has the effect of the current difference that reduces hole side and nozzle side, can reduce unbalance torque.
The result that expression compares pressure reduction, flow and the Cv value of the valve body of in the present invention valve body and prior art in table 1 and Figure 10,11,12.In addition, Fig. 7～existing valve body of 9 expressions.
[table 1]
| Aperture | The pressure reduction of product of the present invention | The flow of product of the present invention | The Cv value of product of the present invention | The pressure reduction of existing product | The flow of existing product | The Cv value of existing product | Pressure reduction | Flow | The Cv value |
| deg. | ??Pa | ?m3/h | ??Pa | ?m3/h | |||||
| 0 | ?0.0 | ?0.0 | ?0.0 | ?0.0 | ?0.0 | ?0.0 | ?0.0％ | 0.0％ | 0.0％ |
| 5 | ?293.8 | ?0.0 | ?0.0 | ?293.3 | ?0.1 | ?0.0 | ?0.2％ | 0.0％ | 0.0％ |
| 10 | ?286.9 | ?17.2 | ?11.8 | ?291.1 | ?10.4 | ?7.1 | -1.4％ | 39.4％ | 39.8％ |
| 15 | ?272.4 | ?38.5 | ?27.0 | ?276.3 | ?33.0 | ?23.0 | -1.4％ | 14.2％ | 14.8％ |
| 20 | ?255.1 | ?49.2 | ?35.7 | ?261.8 | ?46.7 | ?33.5 | -2.7％ | 5.1％ | 6.3％ |
| 25 | ?239.5 | ?62.6 | ?46.9 | ?246.8 | ?57.3 | ?42.3 | -3.1％ | 8.5％ | 9.8％ |
| 30 | ?211.0 | ?77.6 | ?61.9 | ?224.0 | ?70.8 | ?54.8 | -6.1％ | 8.8％ | 11.5％ |
| 35 | ?188.2 | ?89.0 | ?75.1 | ?201.2 | ?81.6 | ?66.6 | -6.9％ | 8.3％ | 11.3％ |
| 40 | ?160.2 | ?98.4 | ?90.1 | ?175.3 | ?92.3 | ?80.8 | -9.4％ | 6.2％ | 10.3％ |
| 45 | ?121.2 | ?111.5 | ?117.3 | ?133.0 | ?108.3 | ?108.8 | -9.7％ | 2.9％ | 7.3％ |
| 50 | ?87.0 | ?123.9 | ?153.9 | ?97.0 | ?121.2 | ?142.6 | -11.5％ | 2.2％ | 7.4％ |
| 55 | ?61.9 | ?131.5 | ?193.7 | ?68.1 | ?129.6 | ?182.0 | -10.0％ | 1.5％ | 6.1％ |
| 60 | ?41.3 | ?135.3 | ?243.9 | ?45.2 | ?135.7 | ?233.9 | -9.5％ | -0.3％ | 4.1％ |
| 65 | ?26.3 | ?141.2 | ?319.2 | ?29.9 | ?141.4 | ?299.5 | -13.8％ | -0.1％ | 6.2％ |
| 70 | ?17.3 | ?141.0 | ?393.3 | ?19.7 | ?141.9 | ?370.2 | -14.2％ | -0.6％ | 5.9％ |
| 75 | ?10.7 | ?143.5 | ?508.6 | ?12.2 | ?145.2 | ?482.3 | -13.8％ | -1.1％ | 5.2％ |
| 80 | ?7.3 | ?145.3 | ?625.0 | ?7.8 | ?144.7 | ?598.7 | -8.1％ | 0.4％ | 4.2％ |
| 85 | ?4.3 | ?144.5 | ?805.8 | ?5.4 | ?144.4 | ?720.1 | -25.0％ | 0.1％ | 10.6％ |
| 90 | ?4.0 | ?143.8 | ?830.7 | ?4.5 | ?144.9 | ?790.3 | -12.2％ | 0.8％ | 4.9％ |
Adopt the present invention, the wall thickness of basic plectane that can make valve body is to the limit, alleviates the valve body overall weight and realizes lightweight.In addition, velocity flow profile in the pipe is, fastest at the pipe central part, along with near tube wall, owing to the friction with tube wall descends, but utilize the inclination of cross rib and angle for θ, with the tube wall part low velocity fluid be attracted in the high-velocity fluid of pipe central part and make its acceleration, reduce whole fluid resistance, can increase flow.And then, can suppress unbalance generation of torque.
Claims (8)
1, a kind of valve body of fly valve is characterized in that, swell is provided with the valve rod hole boss part outside discoideus valve body Y direction upward and downward, forms along a plurality of cross ribs of the specified altitude of X-axis direction extension on the nozzle side of this valve body surface and the side back side, hole.
2, the valve body of fly valve as claimed in claim 1 is characterized in that, utilizes vertical rib to connect valve rod hole boss part up and down, is that starting point forms cross rib with this vertical rib.
3, the valve body of fly valve as claimed in claim 1 or 2 is characterized in that, in a plurality of cross ribs, the cross rib and the X-axis that are positioned at central authorities be arranged in parallel, at this cross rib of upper and lower of cross rib that is positioned at central authorities with angle θ to the inclination of the cross rib direction of central authorities and be provided with.
4, the valve body of fly valve as claimed in claim 1 or 2 is characterized in that, the height of cross rib reduces with angle beta towards the valve body periphery and forms the gradient.
5, the valve body of fly valve as claimed in claim 3 is characterized in that, the height of cross rib reduces with angle beta towards the valve body periphery and forms the gradient.
6, as the valve body of claim 1 or 2 or 5 described fly valves, it is characterized in that, on the surface of valve body, is that the summit has the inclination that the tilt angle is α with respect to X-axis with the Y-axis.
7, the valve body of fly valve as claimed in claim 3 is characterized in that, on the surface of valve body, is that the summit has the inclination that the tilt angle is α with respect to X-axis with the Y-axis.
8, the valve body of fly valve as claimed in claim 4 is characterized in that, on the surface of valve body, is that the summit has the inclination that the tilt angle is α with respect to X-axis with the Y-axis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003028883A JP3676785B2 (en) | 2003-02-05 | 2003-02-05 | Butterfly valve disc |
| JP2003028883 | 2003-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1519496A true CN1519496A (en) | 2004-08-11 |
| CN100376828C CN100376828C (en) | 2008-03-26 |
Family
ID=32956208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031493262A Expired - Lifetime CN100376828C (en) | 2003-02-05 | 2003-06-26 | Valve body of miter valve |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3676785B2 (en) |
| KR (1) | KR100609739B1 (en) |
| CN (1) | CN100376828C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008061472A1 (en) * | 2006-11-22 | 2008-05-29 | Yaode Yang | A new type butterfly valve core and its butterfly valve |
| CN102844598A (en) * | 2010-04-13 | 2012-12-26 | 株式会社巴技术研究所 | Valve element of butterfly valve |
| CN111566397A (en) * | 2018-01-10 | 2020-08-21 | 旭有机材株式会社 | Eccentric butterfly valve |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4713971B2 (en) * | 2005-07-26 | 2011-06-29 | 東洋バルヴ株式会社 | Butterfly valve |
| KR100870921B1 (en) * | 2008-01-10 | 2008-11-28 | 주식회사 한창엔텍 | Butterfly valve |
| CN106246934A (en) * | 2016-10-18 | 2016-12-21 | 广州九陌机电设备有限公司 | A kind of valve |
| KR101894923B1 (en) | 2016-11-10 | 2018-09-04 | 동아대학교 산학협력단 | Butterfly Balve |
| KR101919588B1 (en) | 2016-12-20 | 2018-11-19 | 동아대학교 산학협력단 | Butterfly Balve of Bidirectional Opening And Closing Type |
| TWI677638B (en) | 2018-09-04 | 2019-11-21 | 和正豐科技股份有限公司 | Fluoroplastic butterfly valve structure |
| CN109667940B (en) * | 2018-11-21 | 2022-09-02 | 中国北方车辆研究所 | Butterfly valve plate of hydraulic retarder and design method |
| US11703129B2 (en) | 2019-02-28 | 2023-07-18 | Kitz Corporation | Valve disk of double eccentric butterfly valve, and double eccentric butterfly valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3960177A (en) * | 1975-03-12 | 1976-06-01 | Baumann Hans D | Low torque and low noise butterfly valve disc |
| US4243203A (en) * | 1979-07-20 | 1981-01-06 | Mack Lawrence W | Butterfly valve |
| JPS59153769U (en) * | 1983-03-31 | 1984-10-15 | 積水化学工業株式会社 | butterfly valve valve body |
| JPH035724Y2 (en) * | 1986-07-18 | 1991-02-14 | ||
| JPS6412337A (en) * | 1987-07-06 | 1989-01-17 | Fujitsu Ltd | Method for deciding value in selection of processing |
| US6354567B1 (en) * | 1999-06-29 | 2002-03-12 | Siemens Canada Limited | Throttle shaft and butterfly construction |
-
2003
- 2003-02-05 JP JP2003028883A patent/JP3676785B2/en not_active Expired - Fee Related
- 2003-05-16 KR KR1020030031076A patent/KR100609739B1/en active IP Right Grant
- 2003-06-26 CN CNB031493262A patent/CN100376828C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008061472A1 (en) * | 2006-11-22 | 2008-05-29 | Yaode Yang | A new type butterfly valve core and its butterfly valve |
| CN1975220B (en) * | 2006-11-22 | 2011-03-02 | 杨耀德 | Butterfly valve core and butterfly valve thereof |
| CN102844598A (en) * | 2010-04-13 | 2012-12-26 | 株式会社巴技术研究所 | Valve element of butterfly valve |
| CN102844598B (en) * | 2010-04-13 | 2014-03-12 | 株式会社巴技术研究所 | Valve element of butterfly valve |
| CN111566397A (en) * | 2018-01-10 | 2020-08-21 | 旭有机材株式会社 | Eccentric butterfly valve |
| CN111566397B (en) * | 2018-01-10 | 2022-05-10 | 旭有机材株式会社 | Eccentric butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100376828C (en) | 2008-03-26 |
| JP2004239343A (en) | 2004-08-26 |
| KR20040071040A (en) | 2004-08-11 |
| KR100609739B1 (en) | 2006-08-09 |
| JP3676785B2 (en) | 2005-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1519496A (en) | Valve body of miter valve | |
| CN1071837C (en) | Turbine blade | |
| CN2420228Y (en) | High performance propeller | |
| AU2005265916B2 (en) | Blower | |
| CN1317485C (en) | Variable displacement turbine | |
| CN105065195A (en) | Aerodynamic device for a rotor blade of a wind turbine | |
| CN1083947C (en) | Impeller for centrifugal fan | |
| CN1752457A (en) | Blower impeller | |
| CN1294660A (en) | Axial flow fan | |
| CN1093922C (en) | Axial fan | |
| CN1793665A (en) | Low noise axial fan with rotary deflecting ring | |
| CN1270099C (en) | Improved performance centrifugal blower apparatus including at least two suction inlets, and associated blower method | |
| CN1793664A (en) | Low noise axial fan for train air-conditioning condenser | |
| CN211525182U (en) | Swept-curved blade and axial flow fan | |
| CN1727689A (en) | Blowing fan possessing centrifugal fan and cross flow fan | |
| KR950000605B1 (en) | Valve | |
| CN108108551B (en) | Design method for horizontal rotational flow flood discharging tunnel vent hole | |
| CN1916397A (en) | Winglet set of wind driven generator with vertical axis | |
| CN1654864A (en) | Valve body of butterfly valve | |
| CN108229027B (en) | Method for improving angle modulation precision and reliable durability of mechanical full-adjusting mechanism of water pump | |
| CN2453139Y (en) | Intermal combustion engine high efficiency wing like fan | |
| CN219119407U (en) | High-performance biconcave valve plate | |
| CN114108874B (en) | Connecting device for assembled building of multi-angle wall body | |
| CN216184286U (en) | Aerodynamic force adsorption device for realizing flying of wall-climbing robot | |
| CN219733729U (en) | Split type low-noise high-pressure fan blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161220 Address after: Osaka Japan Patentee after: TOMOE VALVE CO.,LTD. Address before: Osaka City, East Japan Osaka Patentee before: TOMOE TECHNICAL RESEARCH CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080326 |