CN203670827U - Oblique full-sealing-face valve seat butterfly valve - Google Patents
Oblique full-sealing-face valve seat butterfly valve Download PDFInfo
- Publication number
- CN203670827U CN203670827U CN201420016535.3U CN201420016535U CN203670827U CN 203670827 U CN203670827 U CN 203670827U CN 201420016535 U CN201420016535 U CN 201420016535U CN 203670827 U CN203670827 U CN 203670827U
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly
- valve seat
- sealing
- butterfly plate
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 90
- 230000007704 transition Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Abstract
The utility model discloses an oblique full-sealing-face valve seat butterfly valve which comprises a valve base, a valve rod and a butterfly plate. The valve rod is connected with the valve base, the axis of the valve rod coincides with the turning line of the butterfly plate, a sealing face is arranged around the inner surface of the valve base, and the sealing face is matched with the edge of the butterfly plate in a contacting mode to achieve butterfly valve sealing. The edge of the butterfly valve is an annular part sphere which is continuous and equal in width. The sealing face is an annular part sphere which is continuous and equal in width. A circular face formed by surrounding of the annular sealing face is oblique to the turning line of the butterfly plate, so that the sealing face does not pass the connection portion of the valve base and the valve rod.
Description
Technical field
The utility model relates to mechanical sealing mechanism, refers to especially hermetically sealed valve seat butterfly valve of a kind of inclination.
Background technique
Butterfly valve comprises valve seat and butterfly plate, and butterfly plate is disc-shaped plate, in valve seat, rotates around a valve rod, realizes the opening and closing of valve.Butterfly plate edge contacts with valve base sealing under closed state, and on valve seat, sealing with butterfly plate the face contacting is sealing surface.
The butterfly valve of prior art, as shown in Figure 1, butterfly plate 1 is connected with valve seat 3 by valve rod, valve rod is through the sealing surface 3 of valve seat, butterfly plate 1 rotates around valve rod, thereby valve rod must be through the sealing surface 3 of valve seat, sealing surface 3 is interrupted at valve rod place, thereby causes the joint of valve rod and sealing surface 3 to become the weak spot of butterfly valve seal.Reveal for stopping valve rod and sealing surface joint, general processing mode is expand the sealing surface area being connected with valve rod and expand the butterfly plate edge area being connected with valve rod, or increase sealed increscence amount herein, these two kinds of modes all must cause the increasing of moment of torsion, the increasing of the prooving of valve seat, the shortening in life-span.
Model utility content
In view of this, the purpose of this utility model is to propose hermetically sealed valve seat butterfly valve of a kind of inclination.This butterfly valve seal is functional, long service life.
Hermetically sealed the valve seat butterfly valve of inclination providing based on above-mentioned purpose the utility model, comprises valve seat, valve rod, butterfly plate; Described valve rod is connected with valve seat, and its axis overlaps with the turning spur of butterfly plate; Be provided with sealing surface around valve seat interior surface, sealing face contacts and realizes butterfly valve seal with butterfly plate edge mate; Described butterfly valve edge is annulus sphere, continuous and wide; Described sealing surface is annulus sphere, continuous and wide, and the turning spur that described annular sealing surface favours butterfly plate around the disc forming makes sealing surface without described valve seat and valve rod joint.
Optionally, the spherical radius of described sealing surface of seat is less than the spherical radius at butterfly plate edge.
Optionally, under sealing state, butterfly plate and its turning spur form angle, thus with the sealing surface of butterfly plate edge mate be wide continuously spherical calotte.
Optionally, be describedly provided with seal convexity around valve seat interior surface; Described sealing surface is arranged in sealing projection.
Optionally, described sealing surface both sides are provided with the transition chamfer surface around described valve seat interior surface; Described transition chamfer surface is part cylndrical surface or part conical surface.
Optionally, described chamfer surface is continuous or discontinuous.
Optionally, described sealing surface is resilient seal surface.
Optionally, described butterfly plate positive and negative is provided with valve rod attachment hole, lays respectively at the two ends of a diameter of butterfly plate, and the axis of valve rod attachment hole can overlap by turning spur with butterfly plate; Described valve rod is provided with two or one, is fastenedly connected by valve rod attachment hole and butterfly plate.
As can be seen from above, hermetically sealed valve seat butterfly valve of inclination that the utility model provides, becomes special shape by the sealing surface of butterfly valve with butterfly plate edge designs, thereby in valve body, between valve seat and dish version, forms the self-tightening sealing pair of a complete continuous effective.Under the effect of butterfly valve inlet outlet pressure differential, elastic seat sealing surface is moved towards the direction of putting that is conducive to sealing by enforceable, in the range of working pressure of design, butterfly valve inlet outlet pressure differential is larger, sealing effect is better, thereby make this butterfly valve can be directly installed on as exhaust-valve or vacuum valve the end of pipeline, solved butterfly valve and be unfit to do the difficult problem that exhaust-valve is used.
Accompanying drawing explanation
Fig. 1 is the butterfly valve structure schematic diagram of prior art;
Fig. 2 is that hermetically sealed valve seat butterfly valve structure of the utility model embodiment's inclination partly cuts open schematic diagram;
Fig. 3 is another direction partial cutaway schematic diagram of hermetically sealed valve seat butterfly valve of the utility model embodiment's inclination;
Fig. 4 is that hermetically sealed valve seat butterfly valve entirety of the utility model embodiment's inclination is partly cutd open structural representation.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
Fig. 2 is hermetically sealed valve seat butterfly valve structure schematic diagram of the utility model embodiment's inclination.Comprise butterfly plate 21, valve seat 22, valve rod 24, the sealing surface 23 on valve seat 22 contacts and realizes butterfly valve seal with butterfly plate 21, and in the present embodiment, butterfly plate 21 is still realized the switching of butterfly valve around valve rod 24 rotations.Wherein, the axis of valve rod 24 overlaps with the turning spur of butterfly plate 21, and sealing surface 23 forms angle around the disc forming and valve rod 24, and in the present embodiment, this angle should be arranged in suitable scope, makes the joint of valve rod 24 and valve seat 22 without sealing surface 23.
In above-described embodiment, sealing surface 23 is annulus sphere, continuous and wide, and the track that it is the moving point of definite value with a fixed point distance in space that described sphere refers to meets EQUATION x in rectangular coordinate system in space
2+ y
2+ z
2=R
2, R is spherical radius.Accordingly, the edge of butterfly plate 21 is the spherical calotte coordinating with sealing surface.Preferably, the spherical radius at butterfly plate 21 edges equals butterfly plate 21 radiuses.Preferably, the spherical radius of sealing surface 23 is slightly less than the spherical radius at butterfly plate 21 edges, makes interference fit between sealing surface and butterfly plate edge and sealing surface 23.
In above-described embodiment, sealing surface 23 forms angle with valve rod 24, refers to, and under sealing state, butterfly plate 21 makes sealing surface 23 deflection thereupon around the diameter deflection perpendicular to valve rod 24, and then the sealing surface 23 producing and the angle of valve rod 24.
Above-described embodiment butterfly valve edge and the sealing surface of seat coordinating are with it set to sphere, butterfly plate and valve base sealing efficiency are improved largely, in the situation that butterfly plate thickness is set, between butterfly plate and valve seat, without too much sealed increscence amount is set, just can reach good sealing effect.Simultaneously, the joint of valve rod and valve seat is without sealing surface, on valve seat, form so a continuous continual sealing surface, thereby the sealing load uniformity under sealing state between butterfly plate and valve seat, make butterfly valve open and close torque be similar to linear change, thereby reduce the maximum safe torque output value that opens and closes butterfly valve, reduced and opened and closed the torque demand of butterfly valve, thereby reduced butterfly valve user cost; Sealing surface of seat is continuous, and the easier sulfidization molding of butterfly valve is made.
In certain embodiments, sealing surface is resilient seal surface.
Fig. 3 is another direction sectional view of hermetically sealed valve seat butterfly valve of the utility model embodiment's inclination, and the view direction of Fig. 3 is vertical with the view direction of Fig. 2.As shown in Figure 3, be provided with seal convexity 25 around valve seat 22 inwalls, sealing surface 23 is arranged on the internal surface of seal convexity 25,23 of sealing surfaces around disc become α ° of angle with butterfly plate turning spur.Under butterfly plate 21 edge seal states, contact with the sealing surface 23 arranging on seal convexity 25.Further, on seal convexity 25, be also provided with transition chamfer surface 26, around the both sides of sealing surface 23, transition chamfer surface 26 with valve rod jointing place terminal.Transition chamfer surface 26 is part conical surface or cylinder, and butterfly plate in the process of closed butterfly valve is rotated around turning spur, arrives transition chamfer surface 26, then contacts with sealing surface 23.
In certain embodiments, also the angle of sealing surface and valve rod can be strengthened to guarantee that the transition chamfer surface of sealing surface both sides is continuous conical surface or cylinder.
In the every embodiment of the utility model, described spherical calotte, is preferably parallel plane that two distances are less than spherical diameter sphere is intercepted the wide ring-type curved surface of rear gained.Described spherical calotte can be also two non-parallel planes intercept rear gained non-wide ring-type curved surface to sphere.
In the every embodiment of the utility model, described part conical surface, is preferably parallel plane that two distances are less than conical surface height conical surface is intercepted the wide ring-type curved surface of rear gained.Described part conical surface can be also two non-parallel planes intercept rear gained non-wide ring-type curved surface to conical surface.
In every embodiment of the present utility model, described part cylndrical surface, is preferably parallel plane that two distances are less than cylndrical surface height cylndrical surface is intercepted the wide ring-type curved surface of rear gained.Described part cylndrical surface can be also two non-parallel planes intercept rear gained non-wide ring-type curved surface to cylndrical surface.
Fig. 4 is hermetically sealed valve seat butterfly valve entirety half sectional view of the utility model embodiment's inclination.Butterfly plate 21 two sides are respectively equipped with valve rod attachment hole 27, are positioned at 21 1 diameter two ends of butterfly plate, and the hole axle of valve rod attachment hole 27 and butterfly plate 21 form angle and about butterfly plate geometrical center symmetry.Valve rod 24 is provided with two, is arranged at valve seat interior surface middle part, identical with existing valve rod setting position, is fastenedly connected by machanical fastener and valve rod attachment hole 27.Under assembled state, seal convexity 25 is around showing cylndrical surface, about the geometrical center symmetry of butterfly plate in valve seat.
In some other embodiment, valve rod can be connected with butterfly plate by other structure.
Hermetically sealed the valve seat butterfly valve seal face of inclination providing due to the utility model embodiment, without valve rod, is not interrupted at valve rod place, thereby allows to adopt unsealed mode to be fixed between valve rod and valve seat.After butterfly plate edge leaves sealing surface, the valve rod moment of torsion moment of torsion that just only the friction between remaining valve rod and valve rod sealing member and valve rod and axle sleeve causes in theory, thereby butterfly valve open after moment of torsion be a very little stable moment of torsion, reduce like this wearing and tearing between butterfly plate edge and sealing surface, increased stability and the life-span of the sealing pair of butterfly plate edge and sealing surface formation; Moreover, due between valve rod and valve seat, corresponding connection bearing without interference fit, valve rod rotation friction reduces, thereby the moment of torsion of opened butterfly valve also significantly reduces, butterfly valve start-stop device can be worked under the state of low-power, the output of low moment of torsion, be conducive to like this start-stop device long time continuous working, be also conducive to reduce energy consumption.
In addition, because hermetically sealed valve seat butterfly valve seal face spherical radius of inclination of the utility model embodiment is slightly less than the spherical radius at butterfly plate edge, and while butterfly plate edge and sealing surface have certain width, initial stage is while being used butterfly valve, under sealing state, only some sealing surface contacts with butterfly plate edge interference fit, after there are certain wearing and tearing in the part of sealing surface and butterfly plate EDGE CONTACT, butterfly plate edge can further contact with the unworn position of sealing surface, like this, virtually make the butterfly valve life-span be multiplied.
As can be seen from above, the utility model becomes special shape by the sealing surface of butterfly valve with butterfly plate edge designs, thereby in valve body, between valve seat and dish version, forms the self-tightening sealing pair of a complete continuous effective.Under the effect of butterfly valve inlet outlet pressure differential, elastic seat sealing surface is moved towards the direction of putting that is conducive to sealing by enforceable, in the range of working pressure of design, butterfly valve inlet outlet pressure differential is larger, sealing effect is better, thereby make this butterfly valve can be directly installed on as exhaust-valve or vacuum valve the end of pipeline, solved the difficult problem that butterfly valve is unfit to do, exhaust-valve is used.
Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle; any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a hermetically sealed valve seat butterfly valve of inclination, comprises valve seat, valve rod, butterfly plate; Described valve rod is connected with valve seat, and its axis overlaps with the turning spur of butterfly plate; Be provided with sealing surface around valve seat interior surface, sealing face contacts and realizes butterfly valve seal with butterfly plate edge mate; It is characterized in that, described butterfly valve edge is annulus sphere, continuous and wide; Described sealing surface is annulus sphere, continuous and wide, and the turning spur that described annular sealing surface favours butterfly plate around the disc forming makes sealing surface without described valve seat and valve rod joint.
2. hermetically sealed valve seat butterfly valve of inclination according to claim 1, is characterized in that, the spherical radius of described sealing surface is less than the spherical radius at butterfly valve edge.
3. hermetically sealed valve seat butterfly valve of inclination according to claim 1, is characterized in that, under sealing state, butterfly plate and its turning spur form angle, thus with the sealing surface of butterfly plate edge mate be wide continuously spherical calotte.
4. hermetically sealed valve seat butterfly valve of inclination according to claim 3, is characterized in that within the scope of sealing surface, and dish version and valve seat can form the sealing of continuous effective.
5. hermetically sealed valve seat butterfly valve of inclination according to claim 1, is characterized in that, is provided with seal convexity around described valve seat interior surface; Described sealing surface is arranged in sealing projection.
6. hermetically sealed valve seat butterfly valve of inclination according to claim 5, is characterized in that, described sealing surface both sides are provided with the transition chamfer surface around described valve seat interior surface; Described transition chamfer surface is part cylndrical surface or part conical surface.
7. hermetically sealed valve seat butterfly valve of inclination according to claim 6, is characterized in that, described chamfer surface is continuous or discontinuous.
8. hermetically sealed valve seat butterfly valve of inclination according to claim 1, is characterized in that, described sealing surface is resilient seal surface.
9. hermetically sealed valve seat butterfly valve of inclination according to claim 1, is characterized in that, described butterfly plate positive and negative is provided with valve rod attachment hole, lays respectively at the two ends of a diameter of butterfly plate, and the axis of valve rod attachment hole can overlap by turning spur with butterfly plate; Described valve rod is provided with two or one, is fastenedly connected by valve rod attachment hole and butterfly plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016535.3U CN203670827U (en) | 2014-01-10 | 2014-01-10 | Oblique full-sealing-face valve seat butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016535.3U CN203670827U (en) | 2014-01-10 | 2014-01-10 | Oblique full-sealing-face valve seat butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670827U true CN203670827U (en) | 2014-06-25 |
Family
ID=50967125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420016535.3U Expired - Lifetime CN203670827U (en) | 2014-01-10 | 2014-01-10 | Oblique full-sealing-face valve seat butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670827U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864438A (en) * | 2016-06-03 | 2016-08-17 | 凯瑞特阀业有限公司 | Eccentric butterfly valve |
| CN107489774A (en) * | 2017-09-30 | 2017-12-19 | 山西好利阀机械制造有限公司 | The oblique sealing surface valve seat of butterfly valve |
-
2014
- 2014-01-10 CN CN201420016535.3U patent/CN203670827U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864438A (en) * | 2016-06-03 | 2016-08-17 | 凯瑞特阀业有限公司 | Eccentric butterfly valve |
| CN107489774A (en) * | 2017-09-30 | 2017-12-19 | 山西好利阀机械制造有限公司 | The oblique sealing surface valve seat of butterfly valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203670827U (en) | Oblique full-sealing-face valve seat butterfly valve | |
| CN202280865U (en) | Intelligent U-shaped adjusting valve | |
| CN202469026U (en) | Three-eccentric seal butterfly valve | |
| CN204784789U (en) | There is not umbrella tooth transmission soft seal gate valve that card hinders | |
| CN201547268U (en) | butterfly valve with inclined valve plate | |
| CN203335887U (en) | Bi-direction sealing triple-eccentric butterfly valve | |
| CN207598994U (en) | A kind of ball valve sealing structure and ball valve | |
| CN208595239U (en) | A kind of valve protective device | |
| CN204717011U (en) | A kind of centre-pivoted butterfly valve of adjustable gradually tight arc sealing surface | |
| CN202901324U (en) | Double eccentric soft seal butterfly valve | |
| CN207437818U (en) | A kind of hard sealed flat gate valve valve seat of self-adaptation type | |
| CN203477341U (en) | Central-line rubber lined butterfly valve for medium-pressure pipeline | |
| CN203214906U (en) | Midline butterfly valve | |
| CN201992099U (en) | Novel gate valve | |
| CN202091532U (en) | Seal belt structure for soft-sealed butterfly valve | |
| CN209839179U (en) | Forced closed stop valve for air compressor | |
| CN101943270A (en) | Butterfly valve extrusion type sealing structure | |
| CN202674342U (en) | Valve plate for grooved butterfly valve | |
| CN201779278U (en) | Butterfly valve squeezed seal structure | |
| CN2931966Y (en) | Faucet type valve | |
| CN210218705U (en) | Pressure automatic sealing butterfly valve | |
| CN201925499U (en) | Sealing ring of eccentric butterfly valve | |
| CN204083278U (en) | The anti-wear wafer type butterfly valve of locate mode | |
| CN203594819U (en) | Floating ball linkage type control ball valve | |
| CN217207856U (en) | Novel ball valve disk seat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |
|
| CX01 | Expiry of patent term |