CN102818036B - Environment-friendly ammonia valve - Google Patents
Environment-friendly ammonia valve Download PDFInfo
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- CN102818036B CN102818036B CN201210321130.6A CN201210321130A CN102818036B CN 102818036 B CN102818036 B CN 102818036B CN 201210321130 A CN201210321130 A CN 201210321130A CN 102818036 B CN102818036 B CN 102818036B
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Abstract
The invention discloses an environment-friendly ammonia valve. A soft sealing material of a prior valve flap is often made of Babbitt, currently polyfluortetraethylene replaces the Babbitt, and if the polyfluortetraethylene is embedded on the valve flap directly, the polyfluortetraethylene can drop when the valve flap is used for a long time and the temperature is changed. The valve comprises a valve cover, a valve rod, a valve flap which is connected to the valve rod, a valve seat which is located on the lower portion of the valve flap and a sealing pair which is formed between the valve flap and the valve seat. The valve is characterized in that one contact surface of the sealing pair is a rigid spherical surface which is formed on the valve seat, the other contact surface of the sealing pair is a tetrafluoro soft sealing plane which is connected to the bottom of the valve flap, a pressing plate is used for positioning the tetrafluoro soft sealing plane by the valve flap, and the pressing plate is connected with the valve flap through a fastening assembly. The fastening assembly and the pressing plate are used for positioning the tetrafluoro soft sealing plane, so that the dropping phenomenon of the tetrafluoro soft sealing plane caused by long-term usage and temperature change is avoided.
Description
Technical field
The present invention relates to valve, particularly a kind of environment protection type ammonia valve.
Background technique
Environment protection type ammonia, ammoniacal liquor valve are widely used in fields such as controlling ammonia, ammoniacal liquor and combustion gas, and it realizes the object of reliable sealing with the form current-carrying medium of soft seal pair, and adaptive temperature is-40 DEG C～150 DEG C.Flap adopts the material of soft seal to be mostly Babbitt in the past, and Babbitt, compared with soft and deformation easily occurs, makes flap and valve seat close contact, good airproof performance.Replaced Babbitt with new material teflon the eighties, and it has better sealability, is known as " King ".Because Babbitt is softer, so can directly be mounted on flap; And if teflon is directly embedded on flap, can there is the obscission of teflon in long-term use and temperature variation.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defect that above-mentioned prior art exists, the environment protection type ammonia valve that a kind of sealing pair good airproof performance is provided and effectively avoids soft sealing material to come off.
For this reason, the present invention adopts following technological scheme: environment protection type ammonia valve, comprise valve gap, valve rod, be connected to the flap on valve rod, the valve seat below flap and the sealing pair that forms between flap and valve seat, it is characterized in that, a surface of contact of described sealing pair is the rigidity sphere forming on valve seat, and another surface of contact is the tetrafluoro soft seal plane being connected on flap bottom surface; Described flap adopts a pressing plate to position tetrafluoro soft seal plane, and described pressing plate is connected with flap by fastener assembly.The present invention adopts rigidity sphere and tetrafluoro soft seal paired planar to form sealing pair, has solved preferably the compensation problem of sealing surface, good seal performance.The present invention adopts fastener assembly and pressing plate to position tetrafluoro soft seal plane, thereby eliminates tetrafluoro soft seal plane due to the obscission using for a long time and temperature variation causes.
As preferably, stuffing box between described valve rod and valve gap by tetrafluoro filler, be pressed in support on tetrafluoro filler and at least two rack-mount fluororubber O shapes circles form, sealing between support and valve rod adopts at least one fluororubber O shape circle, sealing between support and valve gap adopts at least one fluororubber O shape circle, is pressed with a Gland on support.Traditional stuffing box only has tetrafluoro media assemblage, and stuffing box structure of the present invention guarantees that it is without leaking outside, thoroughly solve ammonia valve bubble, emit, weeping, eliminate the peculiar smell that ammonia leaks outside, thereby also change production environment, reach the effect of environmental protection.
As preferably, described fluororubber O shape circle has three, distribution triangular in shape, and the sealing between support and valve rod adopts two fluororubber O shapes circles, and the leakage rate producing because of this place is larger; Sealing between support and valve gap adopts a fluororubber O shape circle, and the leakage rate producing because of this place is less.
As preferably, a kind of structure of fastener assembly is: it comprises the bolt that is welded on flap, be connected to nut on bolt and for nut being fixed on to the cotter pin on bolt, described pressing plate is enclosed within on bolt and is positioned at the inner side of nut, cotter pin nut for convenience detach, thus facilitate the replacing of tetrafluoro soft seal plane; The another kind of structure of fastener assembly is: it comprises pressing plate is fixed on to the screw on flap and screw is fixed on to the bearing pin on pressing plate.More preferably front a kind of structure of fastener assembly.
As preferably, the joint of valve rod and flap is provided with two grooves that are symmetrical set, and is provided with ball in groove; One side of flap has through hole, and through hole just, to a described groove, is provided with Cock screw in through hole.Valve rod is connected employing ball to be fixed with flap, guarantees that flap rotates freely on valve rod, reaches centering at once, is difficult for making sealing surface to cause flap to be scratched because the rotation of valve rod drives flap.
As preferably, the outward edge of described flap forms a circle carries out the chimb of located lateral to pressing plate; The edge of pressing plate inner side forms one and encloses the step that tetrafluoro soft seal plane is carried out to horizontal and vertical location, and step is pressed in a side of tetrafluoro soft seal plane.
As preferably, environment protection type ammonia valve of the present invention also comprises an adpting flange, on this adpting flange, has tongue-and-groove, makes adpting flange and pipeline (pipeline is provided with tenon) can adopt tenon-slot type sealing configuration, even in the situation that pipeline pressure fluctuates, also can ensure that the sealing of adpting flange is definitely reliable.
Described tetrafluoro soft seal plane is a seal ring of being made up of teflon.
The beneficial effect that the present invention has: adopt rigidity sphere and tetrafluoro soft seal paired planar to form sealing pair, solve preferably the compensation problem of sealing surface, good seal performance, and effectively avoided tetrafluoro soft seal plane due to the obscission using for a long time and temperature variation causes; Adopt fastener assembly and pressing plate to position tetrafluoro soft seal plane, thereby eliminate tetrafluoro soft seal plane due to the obscission using for a long time and temperature variation causes; Stuffing box structure guarantees that it is without leaking outside, thoroughly solved ammonia valve bubble, emit, weeping, eliminate the peculiar smell that ammonia leaks outside, thereby also change production environment, reached the effect of environmental protection.
Brief description of the drawings
Below in conjunction with specification drawings and specific embodiments, the invention will be further described.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation that the present invention seals vice division chief.
Fig. 3 is the structural representation of valve rod of the present invention and valve gap joint.
Fig. 4 is the structural representation of adpting flange of the present invention.
Embodiment
Environment protection type ammonia valve as shown in the figure, its mainly by valve gap 1, valve rod 2, adpting flange 19, be connected to the flap 3 on valve rod, the valve seat 4 below flap and the sealing pair that forms forms between flap and valve seat, on adpting flange, have tongue-and-groove 20.A surface of contact of described sealing pair is the rigidity sphere 5 forming on valve seat, and another surface of contact is the tetrafluoro soft seal plane 6 being connected on flap bottom surface.Tetrafluoro soft seal plane is a seal ring of being made up of teflon.Flap 3 adopts pressing plate 7 to position tetrafluoro soft seal plane 6, and pressing plate 7 is connected with flap 3 by fastener assembly.
Described fastener assembly is by being welded on bolt 12 on flap, being connected to the nut 13 on bolt and forming for the cotter pin 14 nut being fixed on bolt, and described pressing plate is enclosed within on bolt and is positioned at the inner side of nut.The outward edge of flap forms one and encloses the chimb 17 that pressing plate is carried out to located lateral.The edge of pressing plate inner side forms one and encloses the step 18 that tetrafluoro soft seal plane is carried out to horizontal and vertical location, and step is pressed in a side of tetrafluoro soft seal plane.
Stuffing box between valve rod and valve gap by tetrafluoro filler 8, be pressed in support 9 on tetrafluoro filler and three rack-mount fluororubber O shapes circles 10 form, three fluororubber O shapes are enclosed distribution triangular in shape, sealing between support and valve rod adopts two fluororubber O shape circles, and the sealing between support and valve gap adopts a fluororubber O shape circle.On support 9, be pressed with Gland 11.
The joint of valve rod and flap is provided with two grooves that are symmetrical set, and is provided with ball 15 in groove; One side of flap has through hole, and through hole just, to a described groove, is provided with Cock screw 16 in through hole.
Claims (8)
1. environment protection type ammonia valve, comprise valve gap (1), valve rod (2), be connected to the flap (3) on valve rod, the valve seat (4) that is positioned at flap below and the sealing pair forming between flap and valve seat, it is characterized in that, a surface of contact of described sealing pair is the rigidity sphere (5) forming on valve seat, and another surface of contact is the tetrafluoro soft seal plane (6) being connected on flap bottom surface; Described flap (3) adopts a pressing plate (7) to position tetrafluoro soft seal plane (6), and described pressing plate (7) is connected with flap (3) by fastener assembly;
Described fastener assembly comprises the bolt (12) that is welded on flap, be connected to nut (13) on bolt and for nut being fixed on to the cotter pin (14) on bolt, described pressing plate is enclosed within on bolt and is positioned at the inner side of nut.
2. environment protection type ammonia valve according to claim 1, it is characterized in that, stuffing box between described valve rod and valve gap by tetrafluoro filler (8), be pressed in support (9) on tetrafluoro filler and at least two rack-mount fluororubber O shapes circles (10) form, sealing between support and valve rod adopts at least one fluororubber O shape circle, sealing between support and valve gap adopts at least one fluororubber O shape circle, is pressed with a Gland (11) on support (9).
3. environment protection type ammonia valve according to claim 2, it is characterized in that, described fluororubber O shape circle has three, distribution triangular in shape, sealing between support and valve rod adopts two fluororubber O shape circles, and the sealing between support and valve gap adopts a fluororubber O shape circle.
4. environment protection type ammonia valve according to claim 1, is characterized in that, the joint of described valve rod and flap is provided with two grooves that are symmetrical set, and is provided with ball (15) in groove; One side of flap has through hole, and through hole, just to a described groove, is provided with Cock screw (16) in through hole.
5. environment protection type ammonia valve according to claim 1, is characterized in that, the outward edge of described flap forms one and encloses the chimb (17) that pressing plate is carried out to located lateral.
6. environment protection type ammonia valve according to claim 5, is characterized in that, the edge of described pressing plate inner side forms one and encloses the step (18) that tetrafluoro soft seal plane is carried out to horizontal and vertical location, and step is pressed in a side of tetrafluoro soft seal plane.
7. environment protection type ammonia valve according to claim 1, is characterized in that, it also comprises an adpting flange (19), has tongue-and-groove (20) on this adpting flange.
8. environment protection type ammonia valve according to claim 1, is characterized in that, described tetrafluoro soft seal plane is a seal ring of being made up of teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210321130.6A CN102818036B (en) | 2012-09-03 | 2012-09-03 | Environment-friendly ammonia valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210321130.6A CN102818036B (en) | 2012-09-03 | 2012-09-03 | Environment-friendly ammonia valve |
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| Publication Number | Publication Date |
|---|---|
| CN102818036A CN102818036A (en) | 2012-12-12 |
| CN102818036B true CN102818036B (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210321130.6A Active CN102818036B (en) | 2012-09-03 | 2012-09-03 | Environment-friendly ammonia valve |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896110A (en) * | 2015-06-09 | 2015-09-09 | 许炎章 | Stop valve for industrial refrigeration |
| CN105508707A (en) * | 2016-03-01 | 2016-04-20 | 马鞍山市润启新材料科技有限公司 | Valve stem |
| CN106439057A (en) * | 2016-10-28 | 2017-02-22 | 雷力（苏州）阀门有限公司 | Shutoff valve for ammonia |
| CN112344067A (en) * | 2020-11-04 | 2021-02-09 | 上海梅陇阀门有限公司 | Soft sealing safety valve for outdoor fuel tank |
Citations (7)
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|---|---|---|---|---|
| CN2122274U (en) * | 1992-04-16 | 1992-11-18 | 乐山市长江仪表厂 | Sealed stop valve |
| CN2160040Y (en) * | 1993-06-24 | 1994-03-30 | 西安高压阀门厂 | Oil and air transport composite valve |
| CN2316511Y (en) * | 1997-12-12 | 1999-04-28 | 乐山市长江仪表厂 | Blowoff valve |
| CN2409384Y (en) * | 1999-12-30 | 2000-12-06 | 天津塘沽瓦特斯阀门有限公司 | Soft sealed eccentric butterfly valve |
| CN201636385U (en) * | 2009-12-31 | 2010-11-17 | 黄建奇 | Automatic compensating and sealing multi-channel oil line control valve |
| CN202001628U (en) * | 2011-03-18 | 2011-10-05 | 赵雷 | Bidirectional pressure-bearing fluorine rubber fire-proof butterfly valve |
| CN202768870U (en) * | 2012-09-03 | 2013-03-06 | 浙江高中压阀门有限公司 | Environment-friendly type ammonia valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010133491A (en) * | 2008-12-04 | 2010-06-17 | Hiroyuki Sudo | External pilot type operating valve |
-
2012
- 2012-09-03 CN CN201210321130.6A patent/CN102818036B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2122274U (en) * | 1992-04-16 | 1992-11-18 | 乐山市长江仪表厂 | Sealed stop valve |
| CN2160040Y (en) * | 1993-06-24 | 1994-03-30 | 西安高压阀门厂 | Oil and air transport composite valve |
| CN2316511Y (en) * | 1997-12-12 | 1999-04-28 | 乐山市长江仪表厂 | Blowoff valve |
| CN2409384Y (en) * | 1999-12-30 | 2000-12-06 | 天津塘沽瓦特斯阀门有限公司 | Soft sealed eccentric butterfly valve |
| CN201636385U (en) * | 2009-12-31 | 2010-11-17 | 黄建奇 | Automatic compensating and sealing multi-channel oil line control valve |
| CN202001628U (en) * | 2011-03-18 | 2011-10-05 | 赵雷 | Bidirectional pressure-bearing fluorine rubber fire-proof butterfly valve |
| CN202768870U (en) * | 2012-09-03 | 2013-03-06 | 浙江高中压阀门有限公司 | Environment-friendly type ammonia valve |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2010-133491A 2010.06.17 |
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| CN102818036A (en) | 2012-12-12 |
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Denomination of invention: Environment friendly ammonia valve Effective date of registration: 20220118 Granted publication date: 20140625 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Hangzhou Lin'an sub branch Pledgor: ZHEJIANG HIGH AND MIDDLE PRESSURE VALVE Co.,Ltd. Registration number: Y2022330000108 |
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