CN102954233A - High-pressure soft-seal butterfly valve - Google Patents
High-pressure soft-seal butterfly valve Download PDFInfo
- Publication number
- CN102954233A CN102954233A CN 201110243311 CN201110243311A CN102954233A CN 102954233 A CN102954233 A CN 102954233A CN 201110243311 CN201110243311 CN 201110243311 CN 201110243311 A CN201110243311 A CN 201110243311A CN 102954233 A CN102954233 A CN 102954233A
- Authority
- CN
- China
- Prior art keywords
- valve
- dish plate
- butterfly valve
- valve body
- pressure soft
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 238000005552 hardfacing Methods 0.000 claims description 3
- 241000510032 Ellipsaria lineolata Species 0.000 description 27
- 238000003825 pressing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Lift Valve (AREA)
Abstract
The invention relates to a high-pressure soft-seal butterfly valve which comprises a valve body, a valve stem, a disc, positioning pins and an O-shaped sealing ring. The upper end and the lower end of the valve stem are fixed in a middle cavity of the valve body, the disc is fixed on the valve stem through the positioning pins, a dovetail groove is reserved on the outer circle of the disc, and the O-shaped sealing ring is disposed in the dovetail groove of the outer circle of the disc. Compared with the prior art, the high-pressure soft-seal butterfly valve has the advantages of high-pressure resistance, good sealing performance, simple structure, low cost and the like.
Description
Technical field
The present invention relates to a kind of valve, especially relate to a kind of high-pressure soft sealing butterfly valve.
Background technique
Soft sealing butterfly valve is the device of realizing pipe-line system connection and cut-out and flow control, obtains using very widely in many fields such as petrochemical industry, metallurgy, water power and urban water supply and sewerage.In known soft sealing butterfly valve technology, its structural type has center line and three eccentric two kinds of structures.Sealing material is generally rubber, tetrafluoroethylene etc.What soft sealing butterfly valve was the most common is centre-pivoted butterfly valve.Centre-pivoted butterfly valve is that butterfly plate and rubber seal realize sealing by interference fit, and this valve mechanism is simple, flow resistance is little but have following shortcoming:
1, working pressure is low, small-bore in being applicable to;
2, the tolerance of interference fit is difficult to control, when and for example installing the pipeline bolt exert oneself tension so that the two ends rubber seal is extruded in the middle of the valve pocket and using process in the temperature factors such as thermal expansion occur that raises all will cause butterfly plate to be stuck so that valve can't normal running.
The appearance of eccentric butter-fly valve has enlarged the using scope of soft sealing butterfly valve, and its structure is that sealing material is fixed on the butterfly plate by pressing plate, and more closes tighter function with its unique eccentric structure so that valve has.Shown in Fig. 1-2, be three eccentric flexible sealing butterfly valve structure schematic diagram, and hermetic unit possesses enlarged view, comprise valve body 1, dish plate 4, seal ring 7, pressing plate 8, seal ring 7 is fixed on the dish plate 4 by pressing plate 8, seal ring 7 forms a sealing pair with valve body 1 sealing surface, and more closes tighter function with its unique eccentric structure so that valve has.But there is following shortcoming:
1, seal ring, butterfly plate, pressing plate are combined the formation sealing pair, but its overall structure is too thick, and flow resistance is large;
2, complex structure, difficulty of processing is large, manufacture cost is high.
Summary of the invention
Purpose of the present invention is exactly that a kind of high pressure resistant, good airproof performance, the high-pressure soft sealing butterfly valve that simple in structure, cost is low are provided in order to overcome the defective that above-mentioned prior art exists.
Purpose of the present invention can be achieved through the following technical solutions: a kind of high-pressure soft sealing butterfly valve, comprise valve body, valve rod, dish plate, locating stud, the up and down two ends of described valve rod are fixed in the valve body lumen, described dish plate is fixed on the valve rod by locating stud, it is characterized in that, also comprise the O RunddichtringO, described dish plate outer ring offers a dovetail groove, and described O RunddichtringO is placed in the dovetail groove of dish plate outer ring.
Described valve body is straight-through structure, and the junction surface of valve body and dish plate is horizontal plane, O RunddichtringO sealing place hardfacing alloy on this horizontal plane and the dish plate.
Described dish plate top and bottom interface are circular-arc.
Described valve rod top is provided with handwheel, rotates handwheel band ovable valve stem and rotates, thereby drive dish plate rotating opening or throttle down.
Compared with prior art, the present invention has the following advantages:
One, no matter the O RunddichtringO is all to have preferably high voltage performance under static or dynamic prerequisite, and the present invention has adopted O type circle sealing configuration to improve thus the working pressure grade of valve;
Two, adopt O RunddichtringO structural principle, good seal performance, friction factor is little, operation is light;
Three, the cancellation pressing plate has been simplified valve mechanism, has reduced butterfly plate thickness; And it adopts the full-bore structure so that the valve flow resistance is little, and is energy-saving and cost-reducing;
Four, adopt two eccentric structures, O type circle seal form, avoided may the be stuck generation of phenomenon of centre-pivoted butterfly valve.
Description of drawings
Fig. 1 is existing three eccentric flexible sealing butterfly valve structure schematic diagram;
Fig. 2 is the A section enlarged view of Fig. 1;
Fig. 3 is the two eccentric flexible sealing butterfly valve structure schematic diagram of the present invention;
Fig. 4 is the A section enlarged view of Fig. 3.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 3-4, a kind of high-pressure soft sealing butterfly valve, comprise valve body 1, valve rod 2, O RunddichtringO 3, dish plate 4, locating stud 5, handwheel 6, the up and down two ends of described valve rod 2 are fixed in valve body 1 lumen, described valve rod 2 tops are provided with handwheel 6, described dish plate 4 is fixed on the valve rod 2 by locating stud 5, described dish plate 4 outer rings offer a dovetail groove 41, described O RunddichtringO 3 is placed in the dovetail groove 41 of dish plate 4 outer rings, and this structure has preferably sealability and can prevent that O type circle from coming off in valve opening or closing process.Butterfly plate 4 is in the middle of the runner of valve body 1, and dish plate top and bottom interface are circular-arc 42.
Described valve body 1 is straight-through structure: valve body 1 is horizontal plane 11 with the junction surface of dish plate 4, and O RunddichtringO sealing place hardfacing alloy on this horizontal plane 11 and the dish plate 4 to prolong valve working life, improves sealability;
Adopt above-mentioned pair of eccentric structure, operation butterfly plate 4 opens and closes, and rotates handwheel 6 band ovable valve stems 2 and butterfly plate 4 and is rotated counterclockwise 90 valve opens when spending; Dextrorotation turn 90 degrees, and butterfly plate 4 and O RunddichtringO 3 and valve body 1 are in when parallel, and O RunddichtringO 3 contacts valve closing with valve body 1 inner chamber.The cancellation pressing plate has been simplified valve mechanism, has reduced butterfly plate thickness; And it adopts the full-bore structure so that the valve flow resistance is little, and is energy-saving and cost-reducing, adopts two eccentric structures, O type circle seal form, has avoided may the be stuck generation of phenomenon of centre-pivoted butterfly valve.
Claims (4)
1. high-pressure soft sealing butterfly valve, comprise valve body, valve rod, dish plate, locating stud, the up and down two ends of described valve rod are fixed in the valve body lumen, described dish plate is fixed on the valve rod by locating stud, it is characterized in that, also comprise the O RunddichtringO, described dish plate outer ring offers a dovetail groove, and described O RunddichtringO is placed in the dovetail groove of dish plate outer ring.
2. a kind of high-pressure soft sealing butterfly valve according to claim 1 is characterized in that, described valve body is straight-through structure, and the junction surface of valve body and dish plate is horizontal plane, O RunddichtringO sealing place hardfacing alloy on this horizontal plane and the dish plate.
3. a kind of high-pressure soft sealing butterfly valve according to claim 1 is characterized in that, described dish plate top and bottom interface are circular-arc.
4. a kind of high-pressure soft sealing butterfly valve according to claim 1 is characterized in that, described valve rod top is provided with handwheel, rotates handwheel band ovable valve stem and rotates, thereby drive dish plate rotating opening or throttle down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110243311 CN102954233A (en) | 2011-08-23 | 2011-08-23 | High-pressure soft-seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110243311 CN102954233A (en) | 2011-08-23 | 2011-08-23 | High-pressure soft-seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102954233A true CN102954233A (en) | 2013-03-06 |
Family
ID=47763432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110243311 Pending CN102954233A (en) | 2011-08-23 | 2011-08-23 | High-pressure soft-seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102954233A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216628A (en) * | 2013-04-01 | 2013-07-24 | 无锡富盛阀业有限公司 | Butterfly valve |
| CN103216629A (en) * | 2013-04-01 | 2013-07-24 | 无锡富盛阀业有限公司 | Butterfly valve |
| CN104276292A (en) * | 2014-10-20 | 2015-01-14 | 北京宇航系统工程研究所 | Fairing wind shield with rainproof function |
| CN106122475A (en) * | 2016-08-31 | 2016-11-16 | 西峡县内燃机进排气管有限责任公司 | A kind of end face seal structure for engineering goods |
-
2011
- 2011-08-23 CN CN 201110243311 patent/CN102954233A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216628A (en) * | 2013-04-01 | 2013-07-24 | 无锡富盛阀业有限公司 | Butterfly valve |
| CN103216629A (en) * | 2013-04-01 | 2013-07-24 | 无锡富盛阀业有限公司 | Butterfly valve |
| CN104276292A (en) * | 2014-10-20 | 2015-01-14 | 北京宇航系统工程研究所 | Fairing wind shield with rainproof function |
| CN106122475A (en) * | 2016-08-31 | 2016-11-16 | 西峡县内燃机进排气管有限责任公司 | A kind of end face seal structure for engineering goods |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203322379U (en) | Three-way fixed four-valve-seat hard-seal ball valve | |
| JP7093974B2 (en) | valve | |
| CN113202945A (en) | Plug sealing ring for cryogenic valve | |
| CN102954233A (en) | High-pressure soft-seal butterfly valve | |
| CN102644760B (en) | Sealing structure of ultrahigh-pressure needle valve | |
| CN205350416U (en) | Prop upper assembling type ultra -low temperature ball valve sealed fixed firmly | |
| CN203656252U (en) | Sealing structure for floating hard-sealing ball valve and floating hard-sealing ball valve | |
| CN205013743U (en) | Low temperature ball valve with pretension slip valve holder structure | |
| CN103486281B (en) | Pretension, floating valve seat Bidirectional full metal hard seal butterfly valve | |
| CN207975265U (en) | A kind of bidirectional sealed butterfly valve using fluoroplastics valve seat construction | |
| CN106641320B (en) | A valve stem sealing structure of an underwater ball valve | |
| CN201627949U (en) | Large-caliber parallel single-gate valve | |
| CN201568596U (en) | Ball valve | |
| CN203560492U (en) | Top-entry type low-temperature ball valve | |
| CN202252024U (en) | Soft seal butterfly valve with good high-pressure-resistant sealing performance | |
| CN202580212U (en) | Corrosion-resistance parallel double-disc gate valve | |
| CN204553862U (en) | A kind of bellows antibiotic stop valve | |
| CN203322297U (en) | Elastic self-sealing butterfly valve | |
| CN107917205A (en) | A kind of soft seal three-eccentric-butterfly-valve | |
| CN1303348C (en) | Conical surface hard seal ball valve | |
| CN202520972U (en) | Sealing structure for ultra-high-pressure needle valve | |
| CN208605644U (en) | Floating type high-performance butterfly valve | |
| CN208295268U (en) | A kind of dual-seal rotary cut-off valve | |
| CN104235392A (en) | Elastic self-sealing butterfly valve | |
| CN206530729U (en) | A kind of valve rod leak-proof structure of ball valve under water |
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 |
Application publication date: 20130306 |