CN202768870U - Environment-friendly type ammonia valve - Google Patents
Environment-friendly type ammonia valve Download PDFInfo
- Publication number
- CN202768870U CN202768870U CN 201220445546 CN201220445546U CN202768870U CN 202768870 U CN202768870 U CN 202768870U CN 201220445546 CN201220445546 CN 201220445546 CN 201220445546 U CN201220445546 U CN 201220445546U CN 202768870 U CN202768870 U CN 202768870U
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- Prior art keywords
- valve
- flap
- type ammonia
- environment protection
- protection type
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Abstract
The utility model discloses an environment-friendly type ammonia valve. Most Flexible sealing materials which are adopted by a previous valve clack are babbitt metal, at present, polytetrafluoroethylene is adopted to replace the babbitt metal, if the polytetrafluoroethylene is directly inlaid on the valve clack, dropping phenomenon of the polytetrafluoroethylene can occur, and the dropping phenomenon of the polytetrafluoroethylene is caused by temperature changes and long-term use. The environment-friendly type ammonia valve comprises a valve cover, a valve rod, a valve clack which is connected with the valve rod, a valve seat which is arranged below the valve clack and a sealing pair which is formed between the valve clack and the valve seat. The environment-friendly type ammonia valve is characterized in that one contact surface of the sealing pair is a rigid spherical surface which is formed above the valve seat, the other contact surface is a polytetrafluoroethylene flexible sealing plane which is connected with the bottom surface of the valve clack, and a platen is adopted by the valve clack to carry out positioning the polytetrafluoroethylene flexible sealing plane. The platen is connected with the valve clack through a fastening component. The fastening component and the platen are adopted to carry out positioning for the polytetrafluoroethylene flexible sealing plane, so that the dropping phenomenon of the polytetrafluoroethylene flexible sealing plane is removed, and the dropping phenomenon of the polytetrafluoroethylene flexible sealing plane is caused by temperature changes and long-term use.
Description
Technical field
The utility model relates to valve, particularly a kind of environment protection type ammonia valve.
Background technique
Environment protection type ammonia, ammoniacal liquor valve extensively are used in the fields such as control ammonia, ammoniacal liquor and combustion gas, and it realizes the purpose of reliable sealing with the form current-carrying medium of soft seal pair, and adaptive temperature is-40 ℃～150 ℃.Flap adopts the material of soft seal mostly to be greatly Babbitt in the past, and Babbitt is softer and deformation easily occurs, and makes flap and valve seat close contact, good airproof performance.Replaced Babbitt with the new material teflon eighties, and it has better sealability, is known as " King ".Because Babbitt is softer, so can directly be mounted on the flap; And if teflon directly is embedded on the flap, the obscission of teflon can occur in long-term use and temperature variation.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defective 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 utility model adopts following technological scheme: a kind of environment protection type ammonia valve, comprise valve gap, valve rod, be connected to flap on the valve rod, at the valve seat below the flap and the sealing pair that between flap and valve seat, forms, it is characterized in that, a surface of contact of described sealing pair is the rigidity sphere that forms on the valve seat, and another surface of contact is the tetrafluoro soft seal plane that is connected on the flap bottom surface; Described flap adopts a pressing plate that tetrafluoro soft seal plane is positioned, and described pressing plate is connected with flap by fastener assembly.The utility model adopts rigidity sphere and tetrafluoro soft seal paired planar to consist of sealing pair, has solved preferably the compensation problem of sealing surface, good seal performance.The utility model adopts fastener assembly and pressing plate that tetrafluoro soft seal plane is positioned, thereby eliminates tetrafluoro soft seal plane because the obscission that long-term use and temperature variation cause.
As preferably, stuffing box between described valve rod and the valve gap by the tetrafluoro filler, be pressed in support on the tetrafluoro filler and at least two rack-mount fluororubber O shapes circles form, at least one fluororubber O shape circle is adopted in sealing between support and the valve rod, at least one fluororubber O shape circle is adopted in sealing between support and the valve gap, is pressed with a Gland on the support.Traditional stuffing box only has the tetrafluoro media assemblage, and stuffing box structure of the present utility model is guaranteed it 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, and two fluororubber O shapes circles are adopted in distribution triangular in shape, the sealing between support and the valve rod, and the leakage rate that produces because of this place is larger; A fluororubber O shape circle is adopted in sealing between support and the valve gap, and the leakage rate that produces because of this place is less.
As preferably, a kind of structure of fastener assembly is: it comprises the bolt that is welded on the flap, be connected to the nut on the bolt and be used for nut is fixed on cotter pin on the bolt, described pressing plate is enclosed within on the bolt and is positioned at the inboard of nut, cotter pin nut for convenience detach, thus make things convenient for the replacing on tetrafluoro soft seal plane; The another kind of structure of fastener assembly is: it comprises pressing plate is fixed on the screw on the flap and screw is fixed on bearing pin on the pressing plate.Front a kind of structure of fastener assembly more preferably.
As preferably, the joint of valve rod and flap is provided with two and is symmetrically arranged groove, is provided with ball in the groove; One side of flap has through hole, and through hole is provided with Cock screw over against a described groove in the through hole.Valve rod is connected the employing ball to be fixed with flap, guarantees that flap in the valve rod rotation freely, reaches at once centering, is difficult for making sealing surface owing to the rotation drive flap of valve rod causes flap to be scratched.
As preferably, the outward edge of described flap forms a circle carries out located lateral to pressing plate chimb; The edge of pressing plate inboard forms a circle carries out horizontal and vertical location to tetrafluoro soft seal plane step, and step is pressed on the side on tetrafluoro soft seal plane.
As preferably, the utility model environment protection type ammonia valve also comprises an adpting flange, have tongue-and-groove on this adpting flange, make adpting flange and pipeline (pipeline is provided with tenon) can adopt the tenon-slot type sealing configuration, even in the situation that the pipeline pressure fluctuation can guarantee that also the sealing of adpting flange is definitely reliable.
Described tetrafluoro soft seal plane is a seal ring of being made by teflon.
The beneficial effect that the utlity model has: adopt rigidity sphere and tetrafluoro soft seal paired planar to consist of sealing pair, solved preferably the compensation problem of sealing surface, good seal performance, and effectively avoided tetrafluoro soft seal plane because the obscission that long-term use and temperature variation cause; Adopt fastener assembly and pressing plate that tetrafluoro soft seal plane is positioned, thereby eliminate tetrafluoro soft seal plane because the obscission that long-term use and temperature variation cause; Stuffing box structure is guaranteed it 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.
Description of drawings
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model sealing vice division chief.
Fig. 3 is the structural representation of the utility model valve rod and valve gap joint.
Fig. 4 is the structural representation of the utility model adpting flange.
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 flap 3 on the valve rod, form at the valve seat 4 below the flap and the sealing pair that between flap and valve seat, forms, have tongue-and-groove 20 on the adpting flange.A surface of contact of described sealing pair is the rigidity sphere 5 that forms on the valve seat, and another surface of contact is the tetrafluoro soft seal plane 6 that is connected on the flap bottom surface.Tetrafluoro soft seal plane is a seal ring of being made by teflon.Flap 3 adopts 7 pairs of tetrafluoro soft seals of pressing plate plane 6 to position, and pressing plate 7 is connected with flap 3 by fastener assembly.
Described fastener assembly is by being welded on bolt 12 on the flap, being connected to the nut 13 on the bolt and the cotter pin 14 that is used for nut is fixed on the bolt forms, and described pressing plate is enclosed within on the bolt and is positioned at the inboard of nut.The outward edge of flap forms a circle carries out located lateral to pressing plate chimb 17.The edge of pressing plate inboard forms a circle carries out horizontal and vertical location to tetrafluoro soft seal plane step 18, and step is pressed on the side on tetrafluoro soft seal plane.
Stuffing box between valve rod and the valve gap by tetrafluoro filler 8, be pressed in support 9 on the tetrafluoro filler and three rack-mount fluororubber O shapes circles 10 form, three fluororubber O shapes are enclosed distribution triangular in shape, two fluororubber O shape circles are adopted in sealing between support and the valve rod, and a fluororubber O shape circle is adopted in the sealing between support and the valve gap.Be pressed with Gland 11 on the support 9.
The joint of valve rod and flap is provided with two and is symmetrically arranged groove, is provided with ball 15 in the groove; One side of flap has through hole, and through hole is provided with Cock screw 16 over against a described groove in the through hole.
Claims (10)
1. environment protection type ammonia valve, comprise valve gap (1), valve rod (2), be connected to the flap (3) on the valve rod, the valve seat (4) that is positioned at the flap below and the sealing pair that between flap and valve seat, forms, it is characterized in that, a surface of contact of described sealing pair is the rigidity sphere (5) that forms on the valve seat, and another surface of contact is the tetrafluoro soft seal plane (6) that is connected on the flap bottom surface; Described flap (3) adopts a pressing plate (7) that tetrafluoro soft seal plane (6) is positioned, and described pressing plate (7) is connected with flap (3) by fastener assembly.
2. environment protection type ammonia valve according to claim 1, it is characterized in that, stuffing box between described valve rod and the valve gap by tetrafluoro filler (8), be pressed in support (9) on the tetrafluoro filler and at least two rack-mount fluororubber O shapes circles (10) form, at least one fluororubber O shape circle is adopted in sealing between support and the valve rod, at least one fluororubber O shape circle is adopted in sealing between support and the valve gap, is pressed with a Gland (11) on the 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, two fluororubber O shape circles are adopted in sealing between support and the valve rod, and a fluororubber O shape circle is adopted in the sealing between support and the valve gap.
4. environment protection type ammonia valve according to claim 1, it is characterized in that, described fastener assembly comprises the bolt (12) that is welded on the flap, be connected to the nut (13) on the bolt and be used for nut is fixed on cotter pin (14) on the bolt, and described pressing plate is enclosed within on the bolt and is positioned at the inboard of nut.
5. environment protection type ammonia valve according to claim 1 is characterized in that, described fastener assembly comprises pressing plate is fixed on the screw on the flap and screw is fixed on bearing pin on the pressing plate.
6. 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 and is symmetrically arranged groove, is provided with ball (15) in the groove; One side of flap has through hole, and through hole is provided with Cock screw (16) over against a described groove in the through hole.
7. environment protection type ammonia valve according to claim 1 is characterized in that, the outward edge of described flap forms a circle carries out located lateral to pressing plate chimb (17).
8. environment protection type ammonia valve according to claim 7 is characterized in that, the edge of described pressing plate inboard forms a circle carries out horizontal and vertical location to tetrafluoro soft seal plane step (18), and step is pressed on the side on tetrafluoro soft seal plane.
9. 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.
10. 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 by teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220445546 CN202768870U (en) | 2012-09-03 | 2012-09-03 | Environment-friendly type ammonia valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220445546 CN202768870U (en) | 2012-09-03 | 2012-09-03 | Environment-friendly type ammonia valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768870U true CN202768870U (en) | 2013-03-06 |
Family
ID=47775445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220445546 Withdrawn - After Issue CN202768870U (en) | 2012-09-03 | 2012-09-03 | Environment-friendly type ammonia valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768870U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818036A (en) * | 2012-09-03 | 2012-12-12 | 浙江高中压阀门有限公司 | Environment-friendly ammonia valve |
| CN103775661A (en) * | 2013-12-30 | 2014-05-07 | 宁波市天基隆智控技术有限公司 | High-temperature butterfly valve |
| CN105003657A (en) * | 2015-06-09 | 2015-10-28 | 许炎章 | Straight-through type adjustment stop valve used for industrial refrigeration |
| CN105020468A (en) * | 2015-06-09 | 2015-11-04 | 许炎章 | Novel valve clack and valve rod connection structure |
| CN105042179A (en) * | 2015-06-04 | 2015-11-11 | 许炎章 | Connecting structure in stop valve |
-
2012
- 2012-09-03 CN CN 201220445546 patent/CN202768870U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818036A (en) * | 2012-09-03 | 2012-12-12 | 浙江高中压阀门有限公司 | Environment-friendly ammonia valve |
| CN102818036B (en) * | 2012-09-03 | 2014-06-25 | 浙江高中压阀门有限公司 | Environment-friendly ammonia valve |
| CN103775661A (en) * | 2013-12-30 | 2014-05-07 | 宁波市天基隆智控技术有限公司 | High-temperature butterfly valve |
| CN103775661B (en) * | 2013-12-30 | 2016-12-07 | 宁波市天基隆智控技术有限公司 | High temperature butterfly valve |
| CN105042179A (en) * | 2015-06-04 | 2015-11-11 | 许炎章 | Connecting structure in stop valve |
| CN105003657A (en) * | 2015-06-09 | 2015-10-28 | 许炎章 | Straight-through type adjustment stop valve used for industrial refrigeration |
| CN105020468A (en) * | 2015-06-09 | 2015-11-04 | 许炎章 | Novel valve clack and valve rod connection structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130306 Effective date of abandoning: 20140625 |
|
| RGAV | Abandon patent right to avoid regrant |