CN1654864A - Valve body of butterfly valve - Google Patents
Valve body of butterfly valve Download PDFInfo
- Publication number
- CN1654864A CN1654864A CN 200410049008 CN200410049008A CN1654864A CN 1654864 A CN1654864 A CN 1654864A CN 200410049008 CN200410049008 CN 200410049008 CN 200410049008 A CN200410049008 A CN 200410049008A CN 1654864 A CN1654864 A CN 1654864A
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- valve body
- axis
- valve
- lug boss
- plane
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Abstract
The invention resolves the problem caused by edge thickness increase in such a manner that wave peak of maximum thickness is formed along central part of Y axis, and is formed in circular valve body by using sloping plate whose exterior and interior faces are inclined planes as material along a direction from the peak to lateral margin vertical to the valve axes thereby preventing the thickness of periphery of the valve body increasing from X axis to Y axis. The invention makes the central part of the Y axis of the valve body to form the highest peak. The exterior and interior face of the valve body form inclined planes having same angle from the peak to the lateral margin, And projections for valve rod is arranged at upper part and lower part of the valve body along the Y axis, And while the periphery of the valve body forms cylinder shape, inclined planes are arranged at both sides of the peripheral margin of the valve body, and the dimension of the inclined plane increases continuously from the X axis to the Y axis to reach a dimension same as the width of the periphery of the valve body contacting with valve pedestal ring.
Description
Technical field
The present invention relates to be used to open and close the butterfly valve body of the pipeline that fluid flows through.
Background technique
In the past, it is well-known opening and closing the pipeline that various fluids flow through or the butterfly valve of control flow rate.Butterfly valve is the valve body that can rotate freely earth's axis support board shape at valve Ben Xiunei cylindraceous, and the axial rotary valve body of this valve body is stretched out outward and is connected so that rotary driving with actuator.For valve weight is reduced, and for fluid resistance is reduced, and make the reduced thickness of valve body, but along with the valve body reduced thickness, the problem that body strength descends has appearred, and the valve body outer circumferential face adopts the part of spheroid to form, and needs high-precision processing machinery and high manufacturing accuracy, can cause the increase of work manhours simultaneously.In addition, the processing cost of reduction valve body is also desired by people.
In order to lower weight, valve body is base shape with the flat board, is provided for increasing the thickening part of its intensity at its outer surface, and the way of thickening lug boss is known.If from reducing fluid resistance is that purpose is considered, dull and stereotyped thickness is got over Bao Yuehao, but for when stoping pressure fluid, prevent the thrust of resisted movement fluid and cause the valve body distortion, must guarantee certain thickness, so, login No. 2523948 (patent documentation 1) communique in model utility and disclose in order to strengthen the intensity of described flat valve body, the structure of stiffening plate is set at lug boss.Fluid pressure action is in the whole compression area of valve body, its thrust acts on along X-axis and Y-axis equably at the valve body central part, but this known valve body only is the reinforcement to the stress that acts on X-axis, has the problem of the power of the Y direction of practical function not being brought into play any effect.In addition, disclosing in real fair 4-29164 number (patent documentation 2) communique has, and the shape of valve body cylindrical peripheral portion is studied, and when valve body cylindrical peripheral portion is connected with seat ring, makes the structure that valve body and seat ring contact simultaneously when certain opening of valves degree is following.But this structure is because the cylindrical peripheral portion of thickening valve body, so when weight increases the weight of, also cause the problem of the insufficient strength that may produce the valve body central part.
Summary of the invention
At first, the inventor is in order to reduce the thickness of valve body, providing a kind of makes central part form the thickest peak portion along Y-axis, and with two sides in from this peak portion towards the lateral margin direction table vertical with valve axis is that the swash plate on inclined-plane is a material, form it into the valve body of toroidal, advised being provided with the cross rib of the direction almost parallel ground extension of flowing through with fluid simultaneously, to strengthen the structure of its intensity on the surface of valve body.But when the valve body outer circumferential face forms when cylindric from ball shape, the thickness of outer circumferential face (edge thickness) increases towards Y-axis (12 directions) gradually from the X-axis (3 directions) in the central vertical of valve shaft, near the lug boss that valve rod inserts edge thickness is for the thickest, because compare the diameter dimension of valve body increases with spherical shape, when valve body rotates, wearing and tearing near the big part of border width (lug boss) seat ring increase, and may produce breakage or be full of cracks.In addition, the problem that also exists the valve body driving torque to increase.
The present invention makes central part form the peak portion of maximum ga(u)ge along Y-axis, is that the swash plate on inclined-plane is the material beveling from this peak portion towards the lateral margin vertical with valve axis with two sides in the table, and form it in the valve body of toroidal, the thickness (edge thickness) that prevents the valve body outer circumferential face increases from the X-axis to the Y-axis gradually, solves edge thickness and increases and the problem point of generation.
The present invention makes the Y-axis central part of valve body become the highest peak portion, make two sides in the table of valve body form the inclined-plane of same angle to lateral margin from this peak portion, upper and lower settings valve rod hole lug boss in the valve body Y direction, the outer circumferential face of valve body is formed the while cylindraceous, in valve body outer periphery both sides the inclined-plane is set, the size on this inclined-plane forms from the X axis Y-axis and progressively increases, and the width of the feasible valve body outer circumferential face that contacts with seat ring keeps same size.
According to butterfly valve body of the present invention, the border width of valve body outer circumferential face forms identical width dimensions from the X-axis position to Y direction, so, the interface pressure of valve body and seat ring all is identical except lug boss with the full side face of external seat ring, can reduce the open and close torque of valve, and to form same border width be by the inclined-plane is excised into and beveling in the outer periphery both sides of valve body, make border width keep same size as described above like that, but this inclined-plane is minimum on the X-axis position, along with to Y direction near progressively increasing, be maximum near lug boss,, compare with spherical shape by this inclined-plane is set, can avoid the valve diameter size near lug boss, to be maximum problem, thus, as shown in figure 15, can reduce the valve body driving torque, particularly can reduce widely at the opening of valves initial stage, reduced the wearing and tearing of seat ring, thereby can prevent be full of cracks, damaged generation.
The border width of valve body outer circumferential face is 2-4mm, preferably about 3mm, because contact with the inner peripheral surface of seat ring with narrow width, so obviously reduced the wearing and tearing of seat ring, as shown in Figure 16, can improve closed nature.In the past, general closed nature is relevant with sealing area, the words seal that sealing area reduces is just low, the leakage of fluid just may take place, it is all impartial at full side face that the present invention forms the width that makes the valve body outer circumferential face, and make the small size of its fabric width at 2-4mm, improved but be found airtight degree conversely.
And because very big inclined-plane is arranged at lug boss up and down, so, as shown shown in 17, Flow characteristics also can be improved when the valve full open, and then valve is when the small open degree of breakdown, because near the inclined-plane the lug boss helps the opening of valve, small open degree still can obtain flow, therefore can provide controlled very outstanding valve.
In addition, according to the present invention, can be with the reduced thickness of the basic plectane of valve body to limit degree, the weight of valve body alleviates significantly, can realize the lightweight of valve.And the velocity flow profile in the pipe is managed middle body for the fastest, along with reducing because of the friction flow velocity of fluid and tube wall near the tube wall place more, but by laterally helping the inclination with 0 angle, the high-velocity fluid that makes the low velocity fluid at tube wall place be managed central part attracts and quickens, make whole fluid resistances reduce, thereby can increase flow.Further, can stop unbalanced moment of torsion to take place.
Description of drawings
Fig. 1 is the stereogram of valve body of the present invention.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the III amplification stereogram partly of Fig. 1.
Fig. 4 is the IV amplification plan view partly of Fig. 2.
Fig. 5 is the plan view of Fig. 1.
Fig. 6 is A-A ' the line sectional drawing of Fig. 5.
Fig. 7 is B-B ' the line sectional drawing of Fig. 5.
Fig. 8 is C-C ' the line sectional drawing of Fig. 5.
Fig. 9 is the worm's eye view of Fig. 1.
Figure 10 is D-D ' the line sectional drawing of Fig. 5.
Figure 11 is E-E ' the line sectional drawing of Fig. 5.
Figure 12 is F-F ' the line sectional drawing of Fig. 5.
Figure 13 be Fig. 1 side view.
Figure 14 is the longitudinal sectional drawing of Fig. 1.
Figure 15 is the expression valve body of the present invention and the plotted curve of the driving torque between the valve body in the past.
Figure 16 is the plotted curve of the same seal of expression.
Figure 17 is the plotted curve of the same Flow characteristics of expression.
Wherein reference character is as follows:
10 valve bodies, 11 top valve rod holes
12 bottom valve rod holes, 13 upper lobes portions
14 lower lobes portions, 15 valve body outer circumferential faces
16 inclined-planes, 17 cross ribs
18 longitudinal ribs, 19 cross ribs
Embodiment
The desirable example of the present invention below elaborates.Feature of the present invention is exactly that the valve body outer circumferential face that contacts with seat ring is not spherical but forms drum, makes its width form same width dimensions from the X-axis position to Y direction simultaneously.Make two sides in the table of valve body form the highest peak portion along the central portion thickness of Y-axis, and this valve body is used by the material that constitutes with the swash plate of same angle tilt from this peak portion along X-axis direction and is formed, this swash plate forms toroidal, both sides in outer periphery form the inclined-plane that is more and more increased by the X axis Y direction gradient, and the fabric width of aforementioned outer circumferential face is arranged to the same.Valve body of the present invention is specially adapted to the butterfly valve of caliber from small-bore (below the 50mm) to medium caliber (about 50-200mm), and the fabric width of valve body outer circumferential face is preferably 2-4mm in this case, is more preferably 3mm.
The fabric width of valve body outer circumferential face is almost irrelevant with caliber size, preferably is almost the same width from small-bore to medium caliber.The fabric width of outer circumferential face is greater than 4mm, and particularly near the diameter dimension lug boss increases, and the phenomenon to the seat ring wearing and tearing will take place, and causes wearing and tearing, be full of cracks, the breakage of seat ring, and the driving torque of valve body also can increase simultaneously.And the width of valve body is during less than 2mm, with regard to the wearing and tearing of oriented seat ring can become excessive may.Be used to make the identical inclined-plane of width of valve body outer circumferential face to form, but preferably use moldings formed therefrom by machining.
About the valve body Y direction, valve rod hole is configured to expand to foreign side with lug boss, on valve body nozzle side surface the several cross ribs that extend to the primary side direction from lug boss are set, and with the Y-axis the several cross ribs that extend to the primary side direction from lug boss of center Rotate 180 ℃ in the setting of valve body throttle orifice side inner face, setting by rib, increased body strength, reduce the thickness of valve body and realized the light-weighted while, reduced fluid resistance, increased flow, and reduced the current difference of nozzle side and throttle orifice side, controlled the uneven moment of torsion that is applied on the valve body.
The lug boss of configuration up and down in Y direction is connected by longitudinal rib, the cross rib of while nozzle side surface and throttle orifice side inner face, with the longitudinal rib is starting point, the cross rib of central part is configured to extend along X-axis direction, is arranged to along parallel with the cross rib of central part or outer periphery are approaching with some angle tilts ground and be positioned at cross rib about it.And cross rib preferably is provided with the tilt angle with respect to the central plane height step-down of valve body.In addition, constitute the circular plate of valve body, to form with the Y-axis be the plane of inclination that the summit tilts with respect to the Z axle on its surface as described above, and Y-axis is provided with valve rod hole with lug boss and cross rib.
[implementation column]
With reference to Fig. 1-14, the 10th, the valve body of middle heart-shaped butterfly valve is based on circular plate shape, as shown in Figure 6, having with the Y-axis is the inclined surface of center relative Z axle angle [alpha], and this angle [alpha] is identical angle in any part of section A-A ', B-B ' shown in Fig. 6-8 and C-C '.Promptly, to form with the Y-axis be the swash plate on summit on the two sides in the table of valve body 10, be formed for up and down forming up and down in Y-axis that the valve rod hole up and down of valve rod hole 11,12 is connected by longitudinal rib with lug boss 13,14, two lug bosses.In addition, the Y-axis in this specification is exactly the valve shaft of valve body rotary middle spindle, and X-axis just is meant the axle vertical with Y-axis at the valve body center, and the Z axle is meant vertical with X-axis, and passes the axle of the valve body planar central parallel with Y-axis.
With reference to Fig. 3-4 and Figure 10-12, the outer circumferential face 15 that contacts with the seat ring inner peripheral surface and bring into play the valve body 10 of seal effect is not spherical shape but forms the barrel surface shape, and (part of Fig. 5 D-D ' line) forms identical width dimensions near (part of Fig. 5 F-F ' line) of aforementioned lug boss 13,14 from the X-axis position simultaneously.And for the width that makes outer circumferential face reaches the same size, the both sides of valve body outer periphery form inclined-plane 16.By making this inclined-plane 16, the width width that full week can be same except lug boss of outer circumferential face 15 is formed by being minimum on the X-axis position and being that maximum continuous inclined-plane forms near lug boss.The inclined-plane that is used to form the inclined-plane of described outer circumferential face can be formed by machining, but preferably uses moldings formed therefrom.The drum of outer circumferential face can form with machining, but does not need to have the such precision processing technology of sphere processing this moment, so can reduce processing cost.
The width of valve body outer circumferential face is preferably in 2-4mm, is more preferably 3mm.Almost it doesn't matter for the width of valve body outer circumferential face and the size of bore, from small-bore can almost be the same width to medium caliber.When the width of outer circumferential face surpassed 4mm, particularly near the diameter dimension lug boss increased, and the phenomenon of wearing and tearing seat ring takes place, and might cause the wearing and tearing, be full of cracks of seat ring, the moment of torsion when valve body drives damaged the time also can increase.The valve body width may cause to the wearing and tearing of seat ring excessive during less than 2mm.Thus, as shown in Figure 15, can reduce the driving torque of valve body, particularly reduce a lot, also reduce the wearing and tearing of seat ring, can prevent be full of cracks or damaged at the valve initial stage of unlatching just.
As shown in Figure 16, can improve closed nature.And owing to form very big inclined-plane near the lug boss up and down, so as shown in Figure 17, when the valve standard-sized sheet, also can improve Flow characteristics, and hour in open degree, near the lug boss inclined-plane helps the early stage unlatching of valve, because when small open degree, also can obtain flow, so controlled outstanding valve can be provided, in addition, in Figure 15-17, product was the structure with 3 such shown in the accompanying drawing of embodiment of the invention roots except outer circumferential face is spherical shape in the past.Also have 250A, 300A represents the bore of valve, and 250A is exactly the valve of bore 250mm, and 300A is exactly the valve of bore 300mm.
As Fig. 1, shown in 3,6 like that, the inner peripheral surface of top valve rod hole 11 is formed with parallel plane 11a, blocks with the parallel surface of valve rod front end, becomes the connection of block rotation.The section of bottom valve rod hole 12 is circular, and the bottom valve rod is inserted movably.The valve rod that is installed in the top valve rod hole with the state of block rotation stretches out the valve shaft cover of butterfly valve upward and connects desirable actuator in the outer end.
The nozzle side surface of valve body 10 forms a plurality of cross rib 17a, 17b, 17c.Cross rib has certain height from valve body surface, is starting point with aforementioned longitudinal rib 18, almost extends abreast with X-axis to the primary side direction, flows through near the fluid of valve body surface and controls its direction by cross rib.Be formed with 3 cross ribs in the illustrated embodiment, the cross rib 17b of central authorities extends in parallel along X-axis, and its cross rib 17a, 17c up and down forms with respect to X-axis to tilt to the approaching mode of the cross rib 17b of central authorities gradually.And the surface of each cross rib reduces gradually towards the height of primary side.
At the inner face of the throttle orifice side of valve body, to be starting point be formed with to the primary side direction with longitudinal rib 18 is being that the center is rotated under 180 ° the state and 3 same cross ribs 19 of aforementioned nozzle side surface with valve shaft Y.Valve body surface, inner face are meant that face relative with primary side when cut-off valve is the surface, the face relative with primary side is inner face, to half part (half part of right side in the circle 5) of the valve body that primary side is rotated, the throttle orifice side was half part of valve body (left side part among Fig. 5) that sensing primary side direction is rotated when nozzle side was meant the valve body unlatching.
3 transverse finnings 17 of mouth side surface of disputing have certain height, thus, flow through near the valve body surface fluid by these cross ribs come controlling party to.The Peak Flow Rate that the cross rib 17b of central authorities is positioned at pipe partly and with Peak Flow Rate is divided into two parts, and quickens its flow velocity.Owing to tilt towards the cross rib 17b of central authorities at cross rib 17a, the 17c of the configuration up and down of the cross rib 17b of central authorities, therefore so guide near the fluid in the low speed field tube wall cross rib 17b of central authorities into, cross rib 17b by central authorities is incorporated into the fluid that has been accelerated increases its speed.Valve rod hole becomes flow passage resistance force of waterproof with lug boss 13,14 up and down for fluid, and the fluid that impinges upon lug boss produces eddy current in the primary side of projection, makes the resistance of convection cell further increase.With respect to this, the effect that the eddy current that 17 performances of three cross ribs take place the primary side at lug boss carries out rectification, and reduce the generation of eddy current.As a result, cross rib of the present invention with velocity in pipes near valve body, cut off, rectification, the flow direction that the resistance of the resistance of tube wall convection cell and valve body surface convection cell is had by flank is controlled and is carried out completion, and has the effect of the fluid resistance that reduces valve integral body.
Under the situation that valve body is made of flat board, required wall thickness can be obtained by calculating, and the stress that the valve body central part produces is the highest, need be corresponding to the wall thickness of this stress.Valve rod hole is long as far as possible with lug boss 13,14 up and down by making in the present invention, increases the section modulus of lug boss, has played the effect that reduces the wall thickness of valve body central part.The existence of longitudinal rib 18 can help the effect of described lug boss.And 3 cross ribs of valve body table inner face can be as guaranteeing the performance function to the intensity of Y direction, and performance makes the effect of dull and stereotyped wall thickness reduction.So, can realize the valve body of high strength and light weight by valve rod hole being set up and down with lug boss 13,14, longitudinal rib 18, cross rib 17,19 etc.
By the setting of rib, the Flow area when reducing the butterfly valve standard-sized sheet.The fluid resistance that this means valve body self increases result, the valve resistance when having increased standard-sized sheet.But the fluid resistance during the valve standard-sized sheet is not the area of contour that depends on valve body fully, but the toll bar vortex that takes place in the back stream portion by the height difference that exists at the periphery front end of lug boss that is provided with on the valve body and plectane produces greater than the resistance more than the area of contour.Valve body of the present invention, the area of contour itself that exists by cross rib etc. has increased than the valve body of apleuria, but the cross rib that is provided with on the lug boss is brought into play foregoing rectification effect, increased flow at the pipe central part, as a result, the area of contour that is caused by cross rib increases and the bad influence that causes has been cancelled.
Claims (1)
1. butterfly valve body, it is characterized in that, make the Y-axis central part of valve body become the highest peak portion, the two sides forms the inclined-plane of same angle in the table of valve body from peak portion towards lateral margin, at the upper and lower settings valve rod hole lug boss of valve body Y direction, the outer circumferential face of valve body forms cylindrical shape, establishes to the inclined-plane in valve body outer periphery both sides simultaneously, the size on this inclined-plane forms from the X axis Y-axis and increases continuously, and the width of the valve body outer circumferential face that contacts with seat ring forms same size.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004035038A JP3676795B1 (en) | 2004-02-12 | 2004-02-12 | Butterfly valve disc |
| JP2004035038 | 2004-02-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1654864A true CN1654864A (en) | 2005-08-17 |
| CN100343559C CN100343559C (en) | 2007-10-17 |
Family
ID=34824342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100490083A Active CN100343559C (en) | 2004-02-12 | 2004-06-14 | Valve body of butterfly valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3676795B1 (en) |
| CN (1) | CN100343559C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11703129B2 (en) | 2019-02-28 | 2023-07-18 | Kitz Corporation | Valve disk of double eccentric butterfly valve, and double eccentric butterfly valve |
| JP7248287B2 (en) * | 2019-02-28 | 2023-03-29 | 株式会社キッツ | Disc of double eccentric butterfly valve and double eccentric butterfly valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4036469A (en) * | 1975-05-09 | 1977-07-19 | Milwaukee Valve Company, Inc. | Butterfly valve |
| 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 |
| JPS61105373A (en) * | 1984-10-29 | 1986-05-23 | Toshiba Corp | Butterfly valve |
| JP3356511B2 (en) * | 1993-12-01 | 2002-12-16 | 株式会社オーケーエム | Butterfly valve |
| JPH1047497A (en) * | 1996-07-31 | 1998-02-20 | Kubota Corp | Butterfly valve |
| JP3423202B2 (en) * | 1997-12-10 | 2003-07-07 | 株式会社クボタ | Powder shut-off valve device |
-
2004
- 2004-02-12 JP JP2004035038A patent/JP3676795B1/en not_active Expired - Lifetime
- 2004-06-14 CN CNB2004100490083A patent/CN100343559C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN100343559C (en) | 2007-10-17 |
| JP2005226712A (en) | 2005-08-25 |
| JP3676795B1 (en) | 2005-07-27 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20161220 Address after: Osaka Japan Patentee after: Valve Co., Ltd. Address before: Osaka Japan Patentee before: Tomoe Technical Research Co. |
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| TR01 | Transfer of patent right |