CN101818815A - Multi-dimensional ball-sealing butterfly valve - Google Patents
Multi-dimensional ball-sealing butterfly valve Download PDFInfo
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- CN101818815A CN101818815A CN200910064298A CN200910064298A CN101818815A CN 101818815 A CN101818815 A CN 101818815A CN 200910064298 A CN200910064298 A CN 200910064298A CN 200910064298 A CN200910064298 A CN 200910064298A CN 101818815 A CN101818815 A CN 101818815A
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Abstract
The invention discloses a multi-dimensional ball-sealing butterfly valve comprising a valve body, a valve plate and a sealing valve seat, wherein the valve plate is installed in a valve body passageway through a valve shaft, and the sealing valve seat is installed at one side of the valve body passageway and is matched with the sealing face of the valve plate to form a sealing pair. The central point of the valve plate in a closed state is used as an original point O, a transverse direction is used as an X axis, a longitudinal direction is used as a Y axis, a Z axis is perpendicular to an XOY plane through the original point O, the valve shaft is positioned in a forward octant of the X axis and is parallel to the Z axis, meaning that the axis of the valve shaft is deviated in the directions of the X axis and the Y axis of the valve plate, and the central point of the valve shaft is also deviated in the direction of the Z axis; the sealing face is a ball-shaped section to form a sealing ring, and the sealing valve seat is a ball-shaped sealing curve in the shape corresponding to that of the sealing face. Due to the adoption of integral metal sealing and the structure that the ball-shaped section sealing ring and the valve seat form the sealing pair, the valve plate and the valve seat can not generate interference to result in the phenomenon of undercutting blockage, and the multi-dimensional ball-sealing butterfly valve is especially suitable for high-temperature and high-pressure environment.
Description
Technical field
The present invention relates to valve, relate to a kind of butterfly valve specifically.
Background technique
At present, known various eccentric-butterfly-valve is to be made of valve body, valve plate, valve shaft and sealing spoke.The sealing spoke adopts plane sealing structure, exist butterfly plate and valve seat to interfere and undercut that causes and the phenomenon of not opening in the using process, the composite bed sealing material mainly contains asbestos, graphite and Chemical Felter can not be applied to the food medicine and other fields, two off-centre, positive cone sealing configuration, in the scope that butterfly plate is just being opened, can not regulate rate-of flow, and have sealed at both ends up and down of butterfly plate, because the seal leakage that is produced is killed in the scratch of the sealing surface that sliding friction causes of seal.Eccentric cone seal face seal, its eccentric angle does not have ripe Method for Accurate Calculation, during manufacturing, because its eccentric angle is difficult to accurately location and measurement, cause processing difficulties, because the phenomenon that eccentric conical seal (contact) face and valve base chamber are interfered scratch easily even killed, principle as shown in Figure 4, the sealing surface 9 of valve plate is the cone-shaped sealing ring that is formed centrally in being with L, the central point of valve plate 8 is for being initial point O, the center line J of valve shaft 10 is in the X-axis of valve plate, all have on Y-axis and the Z axle and depart from, sealing surface of valve plate is soft seal or the staggered sealing pair of soft or hard, when valve plate when valve plate rotates, Y-axis forward the H point on the sealing surface of valve plate be to be that the center of circle is the circular arc of radius with the distance between KH at the movement locus of 11 of valve seats with the central point K on the center line, can interfere with valve seat when clearly the point of the H on the sealing surface of valve plate rotates, when in like manner rotating on the sealing surface of valve plate any point between HI all can interfere with valve seat; M point on sealing surface of valve plate on the Y-axis negative sense is to be that the center of circle is the circular arc of radius with the distance between KM with the central point K on the center line at the movement locus of 11 of valve seats, can not interfere when M point on the sealing surface of valve plate rotates with valve seat, when rotating as a same reason on the sealing surface of valve plate any point between MN can not interfere with valve seat; Valve plate inside sealing surface and valve base chamber under Y-axis can interfere like this, though sealing surface is soft seal or soft more combination seal, can use, but sealing surface of valve plate and valve base chamber are always interfered mutually, easily take place to abrade even kill, influence the working life of butterfly valve, strengthened cost of production.And employing composite material non-refractory high pressure.And existing sealing pair not only valve seat and butterfly plate sealing surface all cannot change, that is to say that whole butterfly valve is just scrapped when the butterfly plate sealing surface is impaired through washing away for a long time, use very inconvenient, working life is short.
Summary of the invention
Purpose of the present invention just is to overcome above-mentioned deficiency a kind of multi-dimensional ball-sealing butterfly valve is provided, and has solved the technical problem of lacking in the poorly sealed easy leakage of equipment, non-refractory high pressure, non-exchange valve seat and butterfly plate sealing surface, working life.
Technological scheme of the present invention is:
A kind of multi-dimensional ball-sealing butterfly valve, it comprises valve body, be installed in valve plate in the valve flowing channel by valve shaft, and be installed in valve flowing channel one side and match and form the seal valve seat of sealing pair with the sealing surface of valve plate, its central point with the closed state valve plate is initial point O, be X-axis laterally, be Y-axis vertically, the Z axle passes through initial point O perpendicular to XOY plane, valve shaft is positioned at the octant of X-axis forward and parallel with the Z axle, be that valve shaft axis A is in valve plate X-axis and the enterprising line displacement of Y direction, valve shaft central point initial point on the Z-direction of valve plate also is offset, so just improved the localization method of seal butterfly valve, avoid eccentric taper location, space to bring the problem of processing difficulties, can make the processing of sealing pair simpler towards the method for axial or radial deflection, fast, described sealing surface is spheroidal cross section sealing ring, and seal valve seat sealing curved surface spherical in shape is corresponding with the shape of sealing surface, and seal valve seat and sealing surface are the full-metallic hard sealing structures, not only high temperature resistant, high pressure, the working life of more improving valve.
Above-mentioned multi-dimensional ball-sealing butterfly valve, sealing surface weld deposit are at the outer surface of valve plate, and promptly built-up welding high-strength abrasion-proof material forms sealing surface on valve plate.
Above-mentioned multi-dimensional ball-sealing butterfly valve, the seal valve seat assembly welding is on valve body.
The present invention has improved the localization method of seal butterfly valve, avoids eccentric taper location, space to bring the problem of processing difficulties, can make the processing of sealing pair simpler towards the method for axial or radial deflection, and is quick.Because the motion of valve plate adopts the lever form, after valve plate was closed, valve plate and valve seat formed the plane contact sealing, if valve shaft continues rotation, valve plate continues translation forward and reaches equilibrium of forces so, when working medium pressure is arranged, can also realize selfsealings, guarantee sealing reliability.The hypersphere seal butterfly valve is owing to adopt the bulk metal sealing, spheroidal cross section sealing ring, it and valve seat are formed sealing pair, valve plate and valve seat can not interfere and the phenomenon that causes undercut not opened like this, valve plate is that hard fully sealing contacts with valve seat, under the high pressure operating mode, do not produce plastic deformation, under high temperature or the staggered operating mode of low temperature, there is not punching press stress, welding stress, elasticity is annealed or is stung bad embrittlement phenomenon, thoroughly solved the disadvantage that traditional butterfly valve seal unreasonable structure causes leakage, improved the reliability of valve seal greatly, and sealing pair of the present invention not only valve seat can change but also because sealing surface of valve plate and valve plate are independently, and sealing surface of valve plate also can be changed, that is to say when sealing surface of valve plate is impaired through washing away for a long time, only need change valve plate or sealing surface gets final product, very easy to use.That the present invention is fit to is simple in structure, processing simple and fast, easy to use, long service life.Be fit to general industries such as metallurgy, oil, coal gas, chemical industry, water treatment, be particularly suitable at high temperature and high pressure environment.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is that Fig. 1 valve plate A-A is to zoomed-in view;
Fig. 3 is the movement locus schematic representation of Fig. 2 valve plate;
Fig. 4 is the movement locus schematic representation of eccentric cone seal auxiliary valve plate.
Embodiment
As Fig. 1, Fig. 2 and a kind of multi-dimensional ball-sealing butterfly valve shown in Figure 3, it comprises valve body 1, be installed in valve plate 2 in the valve flowing channel by valve shaft 5, and be installed in valve flowing channel one side and match and form the seal valve seat 4 of sealing pair with the sealing surface 7 of valve plate, its central point with closed state valve plate 2 is initial point O, be X-axis laterally, be Y-axis vertically, the Z axle passes through initial point O perpendicular to XOY plane, valve shaft 5 is positioned at the octant of X-axis forward and parallel with the Z axle, be that valve shaft axis A is in valve plate X-axis and the enterprising line displacement of Y direction, the valve shaft central point also is offset on the Z-direction of valve plate, so just improved the localization method of seal butterfly valve, can be towards the method for axial or radial deflection, make the processing of sealing pair simpler, quick, described sealing surface is spheroidal cross section sealing ring, seal valve seat sealing curved surface spherical in shape is corresponding with the shape of sealing surface, seal valve seat and sealing surface are the full-metallic hard sealing structures, and be not only high temperature resistant, high pressure, the working life of more improving valve.
Above-mentioned multi-dimensional ball-sealing butterfly valve, sealing surface weld deposit are at the outer surface of valve plate, and promptly built-up welding high-strength abrasion-proof material forms sealing surface on valve plate, and the seal valve seat assembly welding is on valve body.
Working procedure of the present invention is as follows, as depicted in figs. 1 and 2, Denso 6 passes on the valve plate of fixing by locating stud 32 by valve shaft 5, valve plate 2 is rotated around the center line A of valve shaft 5, because valve shaft 5 departs from valve plate, media flow direction F as shown in Figures 2 and 3, sealing surface of valve plate is be the centre of sphere with distance between BC with the B point is the cross section sealing ring of the ball a of radius, the movement locus that the C of sealing surface of valve plate is ordered is that the central point E with valve shaft center line A is that the center of circle is the round b of radius with the EC distance, the C point rotates counterclockwise around valve shaft when opening, because the shape of sealing surface is to be that the center of circle is the spheroidal cross section sealing ring of radius with the distance between BC with B, distance is greater than distance between EC between BC, so the movement locus of sealing surface C point in valve seat is away from seal valve seat; The movement locus that F is ordered on the sealing surface of valve plate is that the central point E with valve shaft center line A is that the center of circle is the round c of radius with the EF distance, and the F point rotates counterclockwise around valve shaft when opening, and in like manner the movement locus that F is ordered on the sealing surface is away from seal valve seat; Same reason at the movement locus of any point between CF on the sealing surface of valve plate all away from seal valve seat; The movement locus that D is ordered on the sealing surface is to be that the center of circle is the round e of radius with distance between ED with E simultaneously, by shown in Figure 3, though distance is greater than distance between BD between ED, but the movement locus that D is ordered moves in valve body away from valve seat, the movement locus that G is ordered on the valve plate is to be that the center of circle is the round d of radius with distance between EG with E, though between EG distance greater than distance between BG the G point at the movement locus of 4 of valve seats away from valve seat, in like manner any movement locus at valve base chamber between DG is all away from valve seat; The phenomenon that sealing surface of valve plate and valve seat are interfered scratch or killed just can not take place when valve plate is opened like this, when the C point of the time spent sealing surface not moving direction when opening in opposite directions, close up to valve plate, thereby realize the unlatching and the closure of valve plate.
The working principle of three eccentric cone seal butterfly valves:
The phenomenon that the sealing surface of space three eccentric cone-shaped sealing ring valve plates and valve base chamber are interfered scratch easily even killed, principle as shown in Figure 4, the sealing surface 9 of valve plate is the cone-shaped sealing ring that is formed centrally in being with L, the central point of valve plate 8 is for being initial point O, the center line J of valve shaft 10 is in the X-axis of valve plate, all have on Y-axis and the Z axle and depart from, sealing surface of valve plate is soft seal or the staggered sealing pair of soft or hard, when valve plate when valve plate rotates, Y-axis forward the H point on the sealing surface of valve plate be to be that the center of circle is the circular arc of radius with the distance between KH at the movement locus of 11 of valve seats with the central point K on the center line, can interfere with valve seat when clearly the point of the H on the sealing surface of valve plate rotates, when in like manner rotating on the sealing surface of valve plate any point between HI all can interfere with valve seat; M point on sealing surface of valve plate on the Y-axis negative sense is to be that the center of circle is the circular arc of radius with the distance between KM with the central point K on the center line at the movement locus of 11 of valve seats, can not interfere when clearly the point of the M on the sealing surface of valve plate rotates with valve seat, when rotating as a same reason on the sealing surface of valve plate any point between MN can not interfere with valve seat; The sealing surface of valve plate and valve base chamber interfere like this, though sealing surface is soft seal or soft more combination seal, can use, but sealing surface of valve plate and valve base chamber are always interfered mutually, easily take place to abrade even kill, influence the working life of butterfly valve, strengthened cost of production.
Claims (3)
1. multi-dimensional ball-sealing butterfly valve, it comprises valve body (1), be installed in valve plate (2) in the valve flowing channel by valve shaft (5), and be installed in valve flowing channel one side and match and form the seal valve seat (4) of sealing pair with the sealing surface (7) of valve plate (2), it is characterized in that: the central point with closed state valve plate (2) is initial point O, be X-axis laterally, be Y-axis vertically, the Z axle passes through initial point O perpendicular to XOY plane, valve shaft (5) is positioned at the octant of X-axis forward and parallel with the Z axle, described sealing surface (7) is spheroidal cross section sealing ring, seal valve seat (4) sealing curved surface spherical in shape is corresponding with the shape of sealing surface (7), and valve plate is that hard fully sealing contacts with valve seat.
2. multi-dimensional ball-sealing butterfly valve according to claim 1 is characterized in that: sealing surface (7) built-up welding is at the outer surface of valve plate (2).
3. multi-dimensional ball-sealing butterfly valve according to claim 2 is characterized in that: seal valve seat (4) assembly welding is on valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910064298A CN101818815A (en) | 2009-02-27 | 2009-02-27 | Multi-dimensional ball-sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910064298A CN101818815A (en) | 2009-02-27 | 2009-02-27 | Multi-dimensional ball-sealing butterfly valve |
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| Publication Number | Publication Date |
|---|---|
| CN101818815A true CN101818815A (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910064298A Pending CN101818815A (en) | 2009-02-27 | 2009-02-27 | Multi-dimensional ball-sealing butterfly valve |
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| CN (1) | CN101818815A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987184A (en) * | 2016-06-24 | 2016-10-05 | 江苏中昊船用阀门制造有限公司 | Elastic two-way sealing three-eccentric-center butterfly valve |
| CN106051177A (en) * | 2016-06-24 | 2016-10-26 | 江苏中昊船用阀门制造有限公司 | Abrasion-resisting and high-temperature-resisting eccentric butterfly valve |
| CN109114245A (en) * | 2018-09-08 | 2019-01-01 | 谢文学 | A kind of deformation spherical surface eccentric valve |
-
2009
- 2009-02-27 CN CN200910064298A patent/CN101818815A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987184A (en) * | 2016-06-24 | 2016-10-05 | 江苏中昊船用阀门制造有限公司 | Elastic two-way sealing three-eccentric-center butterfly valve |
| CN106051177A (en) * | 2016-06-24 | 2016-10-26 | 江苏中昊船用阀门制造有限公司 | Abrasion-resisting and high-temperature-resisting eccentric butterfly valve |
| CN109114245A (en) * | 2018-09-08 | 2019-01-01 | 谢文学 | A kind of deformation spherical surface eccentric valve |
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Application publication date: 20100901 |