CN101220868A - Hard sealing butterfly valve - Google Patents
Hard sealing butterfly valve Download PDFInfo
- Publication number
- CN101220868A CN101220868A CNA2008100330843A CN200810033084A CN101220868A CN 101220868 A CN101220868 A CN 101220868A CN A2008100330843 A CNA2008100330843 A CN A2008100330843A CN 200810033084 A CN200810033084 A CN 200810033084A CN 101220868 A CN101220868 A CN 101220868A
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- China
- Prior art keywords
- valve
- valve seat
- sealing
- plate
- valve 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.)
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Abstract
The invention relates to the technical field of pipeline valve, in particular to a hard sealing butterfly valve. The invention mainly comprises a valve body, a valve seat, a valve plate, and a valve seat pressing cover. The invention is characterized in that the valve plate is arranged at an eccentrically center position in the valve body; the valve plate is an inverted 'U'-shaped structure; the valve plate is provided with a valve rod I and a valve rod II; two surfaces of the valve seat are provided with sealing pads; the valve seat is pressed by the valve seat pressing cover; the valve seat pressing cover and the valve body are firmly connected by a bolt; the invention has the advantages of flexible operation, long service life, convenient maintenance, small medium pressure reduction and simple structure; the invention more particularly has the special application performance advantage to a medium which is a precipitated out of a viscosity material and a crystal substance of a solid, a gas reinforced body, a liquid reinforced body, a gas and a liquid, thus leading to better sealing performance; the arrangement of an eccentric distance A can realize a self locking and an abrasion compensation; the arrangement of an eccentric distance B can realize light and flexible start and closeness.
Description
[technical field]
The present invention relates to the pipeline valve technical field, relate in particular to a kind of hard seal butterfly valve.
[background technique]
Industrial use pipeline valves such as China's oil, chemical industry, metallurgy, electric power, light industry, building materials are used always at present ball valve, butterfly valve, gate valve and stop valve etc.Because ducted medium is that solid (as ash, coal dust), gas add solid, liquid adds solid etc., all there are solid viscosity thing and crystal to separate out in gas and the liquid, some medium harmfulness is very big, explosive inflammable, medium easily leaks, and makes ball valve or hard seal butterfly valve and other valve opening and closing not in place, rotates dumb, sealing is poor, and working life is short.And existing hard seal butterfly valve is a straight-through structure, adopts both sides sealing, and valve is when opening, and the valve plate horizontal stroke increases the flow resistance of pipeline medium in the axial direction, and pressure drop is bigger, and sealing is poor, keeps in repair very inconvenient.
[summary of the invention]
The purpose of this invention is to provide a kind of various media that are applicable to, good airproof performance, the medium pressure drop is little, flexible operation, long service life, hard seal butterfly valve easy to maintenance.
The present invention mainly comprises valve body, valve seat, valve plate, the valve seat gland, valve plate is arranged on partial center position in the valve body, valve plate is an inverted U-shaped, valve plate is provided with valve rod I and valve rod II, two faces of valve seat are equipped with sealing gasket, and the valve seat gland is pushed down valve seat, by bolt valve seat gland and valve body is fastenedly connected.
This hard seal butterfly valve is control, regulates the critical component of pipeline medium, and the sealing surface of valve plate and valve seat is the annulus cambered surface, and sealing surface can be according to different medium in the pipeline, adopt different materials, make hard sealability better, flexible operation, long service life, the medium pressure drop is little, and is simple in structure.
Because it is B that there is an eccentric distance at valve plate cambered surface center and valve rod center, it is A that there is an eccentric distance at valve body center and valve rod center, 2+B=A, and the setting of throw of eccentric A can realize self-locking and wear compensation.Partially, the setting of t5 ~ 15B can realize opening and closing flexibly slim and graceful.
The setting of this pair off-centre is rotated flexibly valve plate, and half-twist is finished switching.It is tight more to close Shi Yueguan at valve plate, has auto-lock function, and can cut off attached to the attachment on valve plate and the sealing surface of seat, and sealability is better, and medium does not have leakage, uses easy to maintenance.
Beneficial effect of the present invention, flexible operation, long service life, easy to maintenance, the medium pressure drop is little, and is simple in structure, especially to solid, gas add solid, liquid adds the medium that all has solid viscosity thing and crystal to separate out in solid, gas and the liquid, special usability advantage is arranged, make sealability better, the setting of throw of eccentric A can realize self-locking and wear compensation, the setting of throw of eccentric B can realize opening and closing flexibly slim and graceful.The present invention also can be used as Flow-rate adjustment, can substitute the butterfly valve of gate valve, stop valve, ball valve and other structure.
[description of drawings]
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a sectional view of the present invention.
Referring to Fig. 1, Fig. 2,1 valve seat gland, 2 valve seats, 3 valve rod I, 4 valve plates, 5 valve bodies, 6 fillers, 7 valve rod II, 8 sealing gaskets, 9 sealing gaskets, 10 bolts, 11 keys.
[specific embodiment]
Below in conjunction with the drawings and specific embodiments the present invention is described in detail:
Valve plate 4 valve body 5 of packing into, valve rod I3 inserts in valve plate 4 left hole, fastening by bolt 10 and valve body 5, valve rod II7 inserts in valve plate 4 right ports, fixing with key 11, sealing gasket 8 is installed in the last plane of the valve seat 2 of valve body 5 lower ends, between the lower plane of valve seat 2 and the valve seat gland 1 sealing gasket 9 is housed, valve seat 2 is the annulus cambered surface with the sealing surface of valve plate 4, sealing surface is a high-wear-resistant alloy, and is fastening at valve seat gland 1 and valve body 5 usefulness bolts 10, can guarantee that the valve seat 2 and the arc surface of valve plate 4 fit tightly, make the pipeline medium not have leakage, hard sealing is reliable.
Valve plate 4 is hard sealing cambered surface with the sealing surface of valve seat 2, and it is B that there is an eccentric distance at the center of its sealing cambered surface center and valve rod I3, valve rod II7, and it is A that there is an eccentric distance at the center of the axial centre of valve body 5 and valve rod 13, valve rod II7,2+B=A (mm).If can remove sealing gasket 8 behind the sealing surface wear, valve seat 2 to reach, is readjusted, by bolt 10 that valve seat gland 1 and valve body 5 is fastening again, valve seat 2 and valve plate 4 arc surfaces are fitted tightly, reach sealing purpose, easy to maintenance, convenient, thus increase the service life.
Owing to adopt two eccentric structures, make valve plate 4 opening and closing operations light, moment of torsion is little, has self-locking and integrated abrasion compensation, does not increase the resistance that the pipeline medium flows, and is safe and reliable.
The present invention is of many uses, is Φ 500-800mm to pipeline drift diameter, and this valve cuts out with can realizing for 8 seconds; Pipeline drift diameter is below the Φ 500mm, and this valve cuts out with can realizing for 5 seconds, uses engineering pressure 0～4.0Mpa, can be used as repid cut-off valve.
Claims (2)
1. hard seal butterfly valve, mainly comprise valve body, valve seat, valve plate, valve seat gland, it is characterized in that valve plate is arranged on partial center place in the valve body, valve plate is an inverted U-shaped, valve plate is provided with valve rod I and valve rod II, two faces of valve seat are equipped with sealing gasket, and the valve seat gland is pushed down valve seat, by bolt valve seat gland and valve body is fastenedly connected.
2. a kind of hard seal butterfly valve according to claim 1, the sealing surface that it is characterized in that valve plate and valve seat, sealing gasket is hard sealing cambered surface, it is B that there is an eccentric distance at its sealing cambered surface center and valve rod center, and it is A that there is an eccentric distance at valve body axial centre and valve rod center, 2+B=A (mm).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100330843A CN101220868A (en) | 2008-01-25 | 2008-01-25 | Hard sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100330843A CN101220868A (en) | 2008-01-25 | 2008-01-25 | Hard sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101220868A true CN101220868A (en) | 2008-07-16 |
Family
ID=39630874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100330843A Pending CN101220868A (en) | 2008-01-25 | 2008-01-25 | Hard sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101220868A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767628A (en) * | 2012-08-03 | 2012-11-07 | 扬州罗克特种阀门有限公司 | Super-low-temperature tri-eccentric butterfly valve |
| CN107076314A (en) * | 2014-11-04 | 2017-08-18 | 大陆汽车有限责任公司 | Valve gear for motor vehicle |
-
2008
- 2008-01-25 CN CNA2008100330843A patent/CN101220868A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767628A (en) * | 2012-08-03 | 2012-11-07 | 扬州罗克特种阀门有限公司 | Super-low-temperature tri-eccentric butterfly valve |
| CN107076314A (en) * | 2014-11-04 | 2017-08-18 | 大陆汽车有限责任公司 | Valve gear for motor vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080716 |