CN102865376A - Metal hard seal butterfly valve with cylindrical sealing surface - Google Patents
Metal hard seal butterfly valve with cylindrical sealing surface Download PDFInfo
- Publication number
- CN102865376A CN102865376A CN2012103481964A CN201210348196A CN102865376A CN 102865376 A CN102865376 A CN 102865376A CN 2012103481964 A CN2012103481964 A CN 2012103481964A CN 201210348196 A CN201210348196 A CN 201210348196A CN 102865376 A CN102865376 A CN 102865376A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plate
- shaft sleeve
- sealing
- filler
- 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
Abstract
The invention discloses a metal hard seal butterfly valve with a cylindrical sealing surface. The metal hard seal butterfly valve comprises a valve rod (1), a hexagon head bolt (2), a filler pressing plate (3), a filler gland (4), a valve body (5), a filler (6), a filler gasket (7), an upper shaft sleeve (8), a valve plate (9), a pin (10), a lower shaft sleeve (11), a semicircular retainer ring (12), an adjusting gasket (13), a bottom flange cover (14), a winding gasket (15) and a hexagon head bolt (16), wherein a rotating axis of the valve plate is coincided with a central line of the valve plate, so that the driving torque is reduced, and the operability is improved. According to the metal hard seal butterfly valve with the cylindrical sealing surface, the cylindrical surface serves as a sealing surface, the advantages same as those of an eccentric butterfly valve can be obtained, namely when the valve is swtiched on, the valve plate and the valve body can be instantaneously separated from each other, so that extra friction is avoided.
Description
Technical field
The present invention relates to a kind of valve, relate to more specifically a kind of metal hard-sealing butterfly valve with column sealed.
Background technique
Butterfly valve is widely used in the fields such as petrochemical industry, metallurgy as a kind of class valve that blocks.Although present butterfly valve is of a great variety, the design of sealing surface is the restriction butterfly valve all the time, particularly one of key issue of high-performance butterfly valve development.Usually, sealing mainly can be divided into soft seal and firmly seal two kinds.Wherein, soft seal generally is to use elastic material (such as rubber etc.) to come the enhanced leaktightness effect at sealing surface.But lost efficacy owing to high temperature, high pressure can make these elastic materials, thereby cause butterfly valve to leak.Therefore, this just needs to adopt another sealing means, i.e. metal hard-sealing.Interfere when butterfly valve opens and closes for fear of metal hard-sealing shape face, often adopt eccentric design, and produced various eccentric-butterfly-valves, for example: single eccentric-butterfly-valve, double eccentric butterfly valve and three eccentric butterfly valve.But the designing requirement of eccentric-butterfly-valve sealing shape face is relatively high.Three eccentric butterfly valve particularly, the design of its sealing surface is more complicated, and less design parameter error tends to cause sealing the interference of shape face and the leakage of medium, also can cause simultaneously sealing pair to lose efficacy because of excessive wear in advance.
Adopt conical surface different as sealing shape face from eccentric-butterfly-valve, a kind of metal hard-sealing butterfly valve with column sealed of the present invention, the spin axis of its valve plate and valve plate central lines, adopt simultaneously the cylndrical surface as sealing shape face, can obtain the advantage identical with eccentric-butterfly-valve, when being valve opening, valve plate and valve body can break away from and not produce extra friction moment.And adopt the bearing housing design, then avoided dexterously near the shape face of valve plate axis hole two openings to interfere.In addition, with respect to eccentric-butterfly-valve, this butterfly valve is owing to adopting the centrosymmetric structure design, and its driving moment can reduce greatly, and operating characteristics obtains significantly to improve.
Summary of the invention
The invention provides a kind of metal hard-sealing butterfly valve with column sealed, the sealing surface of this butterfly valve is the oblique circular cylinder face, comprises valve rod, hexagon head Luo bolt, hold-down grid, Gland, valve body, filler, Packing seat, Upper shaft sleeve, valve plate, pin, Lower shaft sleeve, semicircle back-up ring, spacer, end blind flange, spirotallic gasket, hexagon head Luo bolt; Described valve rod adopts pin to be connected with valve plate, and Upper shaft sleeve and Lower shaft sleeve sealing are adopted respectively in valve plate axis hole two ends, and Upper shaft sleeve and Lower shaft sleeve one end place in the valve body, and the other end places in the valve plate; Upper shaft sleeve utilizes Packing seat, filler, Gland, hold-down grid to be fixed successively the position, and Lower shaft sleeve adopts semicircle back-up ring fixed position; The sealing of the upper end of valve rod utilizes Packing seat, filler, Gland, hold-down grid, hexagon head Luo bolt to seal, and the sealing of the lower end of valve rod utilizes end blind flange, spirotallic gasket, hexagon head Luo bolt to seal; Spacer is arranged between the lower end and end blind flange of valve rod, comes the vertical position of fine adjustment shaft with spacer.
The spin axis of valve plate and valve plate central lines.During valve opening, valve rod turns clockwise under drive unit drives, thereby drives the valve plate rotation that connects by pin with it, and sealing surface of valve plate and valve body sealing surface break away from, and valve is opened gradually.When closing, adopt inverse operation that valve rod is rotated counterclockwise, sealing surface of valve plate overlaps gradually with valve body sealing surface, valve closing.In the concrete implementation, driving moment is by the input of valve rod upper end, driving mode can be manual, electronic, surge, pneumatic etc.
A kind of metal hard-sealing butterfly valve with column sealed of the present invention, its main sealing surface is the cylndrical surface, its axis becomes with the valve plate plane
Angle,
If adopt complete cylndrical surface sealing, the shape face then will inevitably occur near valve plate axis hole two openings interfere.And simply this two place is worn into the plane, and realize the sealing of end as secondary sealing area with the plane, then can not bear too high pressure, also easily because producing at secondary sealing area, the reasons such as inordinate wear and assembly error leak.Therefore, the present invention adopts axle sleeve to carry out end part seal, by accurate design axle sleeve external diameter, avoids dexterously near the shape face of valve plate axis hole two openings to interfere and possible leakage.As shown in Figure 1, near the shape face interference region valve plate axis hole two openings is a parallelogram ABCD, and its diagonal AC and column sealed 's axis is perpendicular.Therefore, for avoiding interfering, the axle sleeve outer diameter must be greater than the length of diagonal BD.According to geometrical relationship, namely must satisfy
Wherein, d
1Be the axle sleeve outer diameter, t is valve plate thickness,
Be column sealed over glaze line and valve plate plane angulation.
The invention has the beneficial effects as follows:
1, valve plate and valve body all adopt round cross section, and be simple in structure, and the processing aspect helps to reduce manufacture cost.
2, adopt the cylndrical surface as sealing shape face, can obtain the advantage identical with eccentric-butterfly-valve, namely during valve opening, valve plate and valve body can break away from and not produce extra friction moment.
3, the spin axis of valve plate and valve plate central lines are conducive to reduce driving moment, improve operability.
4, adopt the bearing housing design, do not need the secondary sealing area on plane to seal near making valve plate axis hole two openings, thereby reduced the possibility that the shape face is interfered.
Description of drawings
Fig. 1 is the not schematic diagram of interference condition of sealing surface.
Fig. 2 is butterfly valve assembling lateral plan.
Fig. 3 is butterfly valve assembling front view.
Fig. 4 is that valve plate is along the view of axial direction.
Fig. 5 is the valve plate front view.
Among the figure: the 1-valve rod; 2-hexagon head Luo bolt; The 3-hold-down grid; The 4-Gland; The 5-valve body; The 6-filler; The 7-Packing seat; The 8-Upper shaft sleeve; The 9-valve plate; The 10-pin; The 11-Lower shaft sleeve; 12-semicircle back-up ring; The 13-spacer; Blind flange at the bottom of the 14-; The 15-spirotallic gasket; 16-hexagon head Luo bolt.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Fig. 2 and Fig. 3 are the butterfly valve erection drawings, the invention provides a kind of metal hard-sealing butterfly valve with column sealed, the sealing surface of this butterfly valve is the oblique circular cylinder face, and it comprises: the parts such as valve rod 1, hexagon head Luo bolt 2, hold-down grid 3, Gland 4, valve body 5, filler 6, Packing seat 7, axle sleeve 8, valve plate 9, pin 10, axle sleeve 11, semicircle back-up ring 12, spacer 13, end blind flange 14, spirotallic gasket 15, hexagon head Luo bolt 16.
Valve rod 1 adopts pin 10 to be connected with valve plate 9.Valve plate axis hole two ends are adopted axle sleeve 8 and axle sleeve 11 sealings simultaneously, and axle sleeve 8 and 11 1 ends place in the valve body 5, and the other end places in the valve plate 9.Upper shaft sleeve 8 utilizes the sealed members such as Packing seat 7, filler 6, Gland 4, hold-down grid 3 to be fixed; Lower shaft sleeve 11 adopts semicircle back-up ring 12 fixed positions.The sealing of the upper end of axle utilizes the parts such as Packing seat 7, filler 6, Gland 4, hold-down grid 3, hexagon head Luo bolt 2 to seal; The sealing of lower end utilizes the parts such as end blind flange 14, spirotallic gasket 15, hexagon head Luo bolt 16 to seal.Utilize spacer 13 to come the vertical position of axle is finely tuned.
In conjunction with Fig. 1, the spin axis of valve plate 9 and valve plate central lines (.During valve opening, valve rod 1 turns clockwise under drive unit drives, because valve rod 1 is connected by pin 10 with valve plate 9, so valve plate 9 rotates thereupon, valve plate 9 sealing surfaces and the disengaging of valve body 5 sealing surfaces, and valve is opened gradually.When the normal direction axis on valve plate 9 planes and butterfly valve when the axis of pipeline is vertical, valve is opened fully.When closing, adopt inverse operation that valve rod 1 is rotated counterclockwise, when valve plate 9 sealing surfaces overlap valve closing fully with valve body 5 sealing surfaces.In the concrete implementation, driving moment is by the input of valve rod 1 upper end, driving mode can be manual, electronic, surge, pneumatic etc.
See the part schematic diagram of Fig. 4 and Fig. 5 valve plate 9, the main sealing surface of butterfly valve is the cylndrical surface, and its axis becomes with valve plate 9 planes
Angle,
Interfere for fear of the shape face occurs near valve plate axis hole two openings, adopt axle sleeve 8 and axle sleeve 11 to carry out end part seal.The outer diameter of axle sleeve 8 and axle sleeve 11 satisfies with lower inequality
Wherein, d
1Be the axle sleeve outer diameter, t is valve plate thickness,
Be column sealed over glaze line and valve plate plane angulation.
Claims (2)
1. metal hard-sealing butterfly valve with column sealed, it is characterized in that, comprise valve rod (1), hexagon head Luo bolt (2), hold-down grid (3), Gland (4), valve body (5), filler (6), Packing seat (7), Upper shaft sleeve (8), valve plate (9), pin (10), Lower shaft sleeve (11), semicircle back-up ring (12), spacer (13), end blind flange (14), spirotallic gasket (15), hexagon head Luo bolt (16); Described valve rod (1) adopts pin (10) to be connected with valve plate (9), and valve plate axis hole two ends are adopted Upper shaft sleeve (8) and Lower shaft sleeve (11) sealing simultaneously, and Upper shaft sleeve (8) and Lower shaft sleeve (11) one ends place in the valve body (5), and the other end places in the valve plate (9); Upper shaft sleeve (8) utilizes Packing seat (7), filler (6), Gland (4), hold-down grid (3) to be fixed successively the position, and Lower shaft sleeve (11) adopts semicircle back-up ring (12) fixed position; The sealing of the upper end of valve rod (1) utilizes Packing seat (7), filler (6), Gland (4), hold-down grid (3), hexagon head Luo bolt (2) to seal, and the sealing of the lower end of valve rod (1) utilizes end blind flange (14), spirotallic gasket (15), hexagon head Luo bolt (16) to seal; Spacer (13) is arranged between the lower end and end blind flange (14) of valve rod (1), comes the vertical position of fine adjustment shaft with spacer (13).
2. a kind of metal hard-sealing butterfly valve with column sealed according to claim 1 is characterized in that, the column sealed over glaze line of valve plate (9) becomes with valve plate (9) plane
Angle,
, the outer diameter of Upper shaft sleeve (8) and Lower shaft sleeve (11) satisfies inequality
, wherein, d
1Be the axle sleeve outer diameter, t is valve plate (9) thickness,
Column sealed over glaze line and valve plate (9) plane angulation for valve plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210348196.4A CN102865376B (en) | 2012-09-19 | 2012-09-19 | Metal hard seal butterfly valve with cylindrical sealing surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210348196.4A CN102865376B (en) | 2012-09-19 | 2012-09-19 | Metal hard seal butterfly valve with cylindrical sealing surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102865376A true CN102865376A (en) | 2013-01-09 |
| CN102865376B CN102865376B (en) | 2014-12-03 |
Family
ID=47444428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210348196.4A Active CN102865376B (en) | 2012-09-19 | 2012-09-19 | Metal hard seal butterfly valve with cylindrical sealing surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102865376B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004232831A (en) * | 2003-02-03 | 2004-08-19 | Kubota Corp | Shaft sealing structure for butterfly valve |
| JP2008144836A (en) * | 2006-12-08 | 2008-06-26 | Maezawa Ind Inc | Metal seat butterfly valve |
| CN201318449Y (en) * | 2008-12-09 | 2009-09-30 | 辽宁能发伟业能源科技有限公司 | Butterfly valve with butterfly plate adjusting device |
| CN101706003A (en) * | 2009-11-03 | 2010-05-12 | 无锡杰尔压缩机有限公司 | Sealing structure of lining rubber center line butterfly valve |
| CN102478123A (en) * | 2010-11-25 | 2012-05-30 | 姜堰市通达船用阀泵有限公司 | Adjustable shaft seal structure for valve rod of butterfly valve |
| CN102606751A (en) * | 2011-05-18 | 2012-07-25 | 浙江欧尼特阀门有限公司 | Three-section bidirectionally-sealed high-pressure butterfly valve |
-
2012
- 2012-09-19 CN CN201210348196.4A patent/CN102865376B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004232831A (en) * | 2003-02-03 | 2004-08-19 | Kubota Corp | Shaft sealing structure for butterfly valve |
| JP2008144836A (en) * | 2006-12-08 | 2008-06-26 | Maezawa Ind Inc | Metal seat butterfly valve |
| CN201318449Y (en) * | 2008-12-09 | 2009-09-30 | 辽宁能发伟业能源科技有限公司 | Butterfly valve with butterfly plate adjusting device |
| CN101706003A (en) * | 2009-11-03 | 2010-05-12 | 无锡杰尔压缩机有限公司 | Sealing structure of lining rubber center line butterfly valve |
| CN102478123A (en) * | 2010-11-25 | 2012-05-30 | 姜堰市通达船用阀泵有限公司 | Adjustable shaft seal structure for valve rod of butterfly valve |
| CN102606751A (en) * | 2011-05-18 | 2012-07-25 | 浙江欧尼特阀门有限公司 | Three-section bidirectionally-sealed high-pressure butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102865376B (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202327080U (en) | X-shaped sealing ring | |
| CN202733009U (en) | Flange two-way pressure hard sealing butterfly valve | |
| CN105240545B (en) | A kind of dual drive is without friction hard-sealing butterfly valve | |
| CN105422900A (en) | Ball valve with non-contact valve ball and valve seats during rotation | |
| CN201779279U (en) | Triple eccentric metal hard sealing butterfly valve with access hole | |
| CN205298625U (en) | Valve ball disk seat rotates contactless ball valve | |
| CN102865376B (en) | Metal hard seal butterfly valve with cylindrical sealing surface | |
| CN202992205U (en) | Low load type cutting-off butterfly valve | |
| CN202118294U (en) | High-pressure hard seal ball valve | |
| CN103591335A (en) | Novel instrument three-valve manifold | |
| CN201162846Y (en) | Double-eccentric semi-sphere ball valve | |
| CN102777683B (en) | Ultrahigh vacuum fine adjustment valve | |
| CN209638436U (en) | The small-aperture ball valve of direct press type valve stem packing sealing | |
| CN210716002U (en) | Double-eccentric butterfly valve with high sealing performance | |
| CN204372210U (en) | A kind of valve rod with universal joint | |
| CN203549006U (en) | Novel instrument three-valve set | |
| CN206929387U (en) | A kind of check valve | |
| CN110686092A (en) | Hemisphere metal seal fixed ball valve | |
| CN218326332U (en) | Eccentric spherical valve with single valve seat | |
| CN105156699B (en) | A kind of three eccentricity sealed butterfly valve with sealing ring | |
| CN210637522U (en) | Self-sealing butterfly valve | |
| CN216201082U (en) | Sleeve air sealing device for rotary butterfly valve shaft | |
| CN204437353U (en) | A kind of ball valve valve rod assembly stopped ball valve and leak | |
| CN103486281A (en) | Two-way all-metal hard seal butterfly valve with pre-tightening and floating valve seat | |
| CN209839179U (en) | Forced closed stop valve for air compressor |
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: 20201110 Address after: 226408 Xinjian West Road, Fengli Town, Rudong County, Nantong City, Jiangsu Province Patentee after: Rudong Wenyuan investment and Development Co., Ltd Address before: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1 Patentee before: CHANGZHOU University |