CN201028004Y - Tri-eccentric multilayer sealing butterfly valve - Google Patents
Tri-eccentric multilayer sealing butterfly valve Download PDFInfo
- Publication number
- CN201028004Y CN201028004Y CNU2007200360892U CN200720036089U CN201028004Y CN 201028004 Y CN201028004 Y CN 201028004Y CN U2007200360892 U CNU2007200360892 U CN U2007200360892U CN 200720036089 U CN200720036089 U CN 200720036089U CN 201028004 Y CN201028004 Y CN 201028004Y
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- valve
- utility
- model
- butterfly
- eccentric
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Abstract
The utility model relates to a triple eccentric multi-level sealing butterfly valve, in particular to an optimal device used in pipes of different media such as petroleum, chemical industry, metallurgy, electricity, foodstuff, medicine, water supply and drainage, and gas delivery for regulating flow rate and cutting off or switching on fluids. The utility model is characterized in that: multi-level seal ring components pressed with a pressing plate are respectively arranged on an upper bench and a lower bench of a butterfly plate which is fabricated into an inclined taper. Seal rings of the butterfly valve are rigid and soft laminations and provided with rigid and soft double sealings; thereby, the utility model has good sealing property no matter in low temperature or high temperature operating condition; because triple eccentric structure is adopted, almost no friction is generated between valve seats and the butterfly plate; thereby, not only all contact frictions between seal pieces and two valve seats when the valve is opened or closed are eliminated, but also the service life is prolonged, the sealing property is improved with zero leakage. The utility model also has the advantages of small open-close moment, flexible operation, less consumption labor and energy, relatively long service life, high-temperature resistance, high-pressure resistance, corrosion resistance, and wide scope of application.
Description
Technical field
The utility model relates to a kind of three eccentric multi-level seal butterfly valves, specifically is used for doing on the pipeline of different mediums such as oil, chemical industry, metallurgy, electric power, food, medicine, plumbing, gas delivery the optimum device of regulating flow, blocking or connect fluid.
Background technique
At present, the butterfly valve that be used for doing to regulate flow on the pipeline of different medium, blocks or connect fluid mainly is made up of valve board assembly, valve component and bottom assembly etc.The sealing surface of valve plate and the sealing between the valve seat are to lean on the moment of transmission device to make valve plate press to valve seat.During positive stream mode, the high sealing extruding is tight more more for pressure medium.Along with the increase valve plate of pressure medium and the unit positive pressure between the valve seat during less than medium pressure, sealing begins to leak when the runner medium counter flow.Because be subjected to the restriction of structural condition, this inadaptability in structure is latus rectum DN200 with lower valve, reason is that the valve plate overall structure is too thick, and flow resistance is big.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby provide a kind of three eccentric multi-level seal butterfly valves, no matter under low temperature still is worst hot case, all have excellent sealing performance, and have open and close that moment is little, characteristics such as flexible operation, high temperature resistant, high pressure resistant, corrosion-resistant, long service life.
Main solution of the present utility model is achieved in that
The utility model mainly adopts valve rod is passed down through butterfly plate from valve body top center hole to withstanding in the bottom, and feature is that the multi-layer sealing ring assembly is set respectively on the up/down steps of butterfly plate, pushes down with pressing plate.
Described valve body is provided with stuffing box, and Packing seat is put into the stuffing box bottom, puts into 4～5 graphite fillers again, compresses with Gland.
Described multi-layer sealing ring assembly adopts stainless steel seal ring, the stack of asbestos slate seal ring to form.Described butterfly plate is made the taper of inclination.
Be provided with the metallic cover pad in the middle of described valve body lower portion and the bottom.
Compared with the prior art the utility model has the following advantages:
The utility model is simple, compact and reasonable for structure; The butterfly plate seal ring is hard soft lamination, has hard soft double seal, no matter under low temperature still is worst hot case, all has excellent sealing performance; Because adopt three eccentric structures, valve seat and butterfly plate almost do not have friction, all contacts of not only having eliminated between in valve opening and closing Sealing and two rub, thereby have increased working life, and sealability reaches zero leakage; Open and close that moment is little, flexible operation, lowering energy-saving, working life is longer; High temperature resistant, high pressure resistant, corrosion-resistant using scope is wide, selects different materials for use, can be applicable to media such as water, sewage, seawater, air, steam, coal gas, inflammable gas, Korrosionsmedium, oil product and food respectively, and Maximum operating temperature can reach 600 ℃.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
The utility model mainly is made up of valve rod 1, nut 2, stud bolt 3, Gland 4, graphite packing 5, Packing seat 6, valve body 7, stainless steel seal ring 8, asbestos slate seal ring 9, hexagon socket head cap screw 10, straight pin 11, butterfly plate 12, pressing plate 13, hexagon socket head cap screw 14, metallic cover pad 15 and bottom 16 etc.
On the up/down steps that stainless steel seal ring 8 and asbestos slate seal ring 9 multi-layer sealing ring assemblies that stack is formed are arranged on butterfly plate 12, after pushing down with pressing plate 13 respectively, with 12 M8 hexagon socket head cap screws 10 pressing plate 13 and the butterfly plate 12 fastening multi-layer sealing ring assemblies that compress are formed valve board assembly again, described butterfly plate 12 is made the taper of inclination.Body bottom assembly adopts in the middle of valve body 7 bottoms and bottom 16 metallic cover pad 15 is set, and is fastening with the hexagon socket head cap screw 14 of 4 M10.Valve board assembly is put into valve body 7 inside by direction, and valve rod 1 is passed down through the center hole of butterfly plate 12 from valve body 7 tops, run through valve body 7 again till withstanding bottom 16.Described valve body 7 is provided with stuffing box, and Packing seat 6 is put into the stuffing box bottom, puts into 4～5 graphite fillers 5 again, and 2 M16 stud bolts 3 are screwed in earlier on the valve body 7, with two nuts 2 Gland 4 is compressed again.With 2 straight pins 11 that valve board assembly and valve rod 1 is fixing at last.
Working procedure of the present utility model and working principle;
So-called three off-centre of the utility model are meant: butterfly plate departs from pipeline center; Depart from the sealing surface center line; The taper of tilting.When valve opening, the valve plate group contacted with valve seat moment when closing, and utilized butterfly plate off-centre, departed from the sealing surface center line, hightailed valve seat, had reduced the wearing and tearing of sealing pair, and rub-moment is little, opened flexibly.The eccentric conical surface can make valve butterfly plate when opening or cutting out can pass through the valve seat endoporus, realizes contact seal.In addition, the turning radius of taper butterfly plate is greater than the turning radius of sealing pair contact position, so that closing more will appear when valve closing in butterfly plate will be tight more, can realize self-locking, prevents that butterfly plate from crossing the position.
Claims (5)
1. eccentric multi-level seal butterfly valve, adopt valve rod (1) to be passed down through the center hole of butterfly plate (12) from valve body (7) top to withstanding in the bottom (16), it is characterized in that on the up/down steps of butterfly plate (12), being provided with respectively the multi-layer sealing ring assembly, push down with pressing plate (13).
2. according to claim 1 three eccentric multi-level seal butterfly valves is characterized in that described multi-layer sealing ring assembly adopts stainless steel seal ring (8), asbestos slate seal ring (9) stack to form.
3. according to claim 1 three eccentric multi-level seal butterfly valves is characterized in that described (12) make the taper of inclination.
4. according to claim 1 three eccentric multi-level seal butterfly valves is characterized in that described valve body (7) is provided with stuffing box, and Packing seat (6) is put into the stuffing box bottom, puts into 4～5 graphite fillers (5) again, compresses with Gland (4).
5. according to claim 1 three eccentric multi-level seal butterfly valves is characterized in that being provided with metallic cover pad (15) in the middle of described valve body (7) bottom and the bottom (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200360892U CN201028004Y (en) | 2007-04-18 | 2007-04-18 | Tri-eccentric multilayer sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200360892U CN201028004Y (en) | 2007-04-18 | 2007-04-18 | Tri-eccentric multilayer sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201028004Y true CN201028004Y (en) | 2008-02-27 |
Family
ID=39132216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200360892U Expired - Fee Related CN201028004Y (en) | 2007-04-18 | 2007-04-18 | Tri-eccentric multilayer sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201028004Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242232A (en) * | 2011-07-14 | 2011-11-16 | 世林（漯河）冶金设备有限公司 | Three-eccentric cut-off butterfly valve of blast furnace |
| CN102252105A (en) * | 2011-07-14 | 2011-11-23 | 世林（漯河）冶金设备有限公司 | Seal structure of three-eccentric cut-off butterfly valve for blast furnace |
| CN102620000A (en) * | 2012-04-16 | 2012-08-01 | 株洲南方阀门股份有限公司 | Electric vacuum butterfly valve |
| CN102635701A (en) * | 2011-12-19 | 2012-08-15 | 圣博莱阀门有限公司 | Double-cone metal seal valve |
| CN105465385A (en) * | 2016-02-01 | 2016-04-06 | 上海理工大学 | Three-eccentric center butterfly valve used in high temperature and high pressure steam |
| CN108843797A (en) * | 2018-06-14 | 2018-11-20 | 河南柴油机重工有限责任公司 | A kind of sequential pressurizing engine special-purpose high temperature butterfly valve |
-
2007
- 2007-04-18 CN CNU2007200360892U patent/CN201028004Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242232A (en) * | 2011-07-14 | 2011-11-16 | 世林（漯河）冶金设备有限公司 | Three-eccentric cut-off butterfly valve of blast furnace |
| CN102252105A (en) * | 2011-07-14 | 2011-11-23 | 世林（漯河）冶金设备有限公司 | Seal structure of three-eccentric cut-off butterfly valve for blast furnace |
| CN102635701A (en) * | 2011-12-19 | 2012-08-15 | 圣博莱阀门有限公司 | Double-cone metal seal valve |
| CN102620000A (en) * | 2012-04-16 | 2012-08-01 | 株洲南方阀门股份有限公司 | Electric vacuum butterfly valve |
| CN102620000B (en) * | 2012-04-16 | 2014-02-26 | 株洲南方阀门股份有限公司 | Electric vacuum butterfly valve |
| CN105465385A (en) * | 2016-02-01 | 2016-04-06 | 上海理工大学 | Three-eccentric center butterfly valve used in high temperature and high pressure steam |
| CN108843797A (en) * | 2018-06-14 | 2018-11-20 | 河南柴油机重工有限责任公司 | A kind of sequential pressurizing engine special-purpose high temperature butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20160418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |