CN201651349U - Butterfly valve with fully-bushed valve rod - Google Patents
Butterfly valve with fully-bushed valve rod Download PDFInfo
- Publication number
- CN201651349U CN201651349U CN2009202128396U CN200920212839U CN201651349U CN 201651349 U CN201651349 U CN 201651349U CN 2009202128396 U CN2009202128396 U CN 2009202128396U CN 200920212839 U CN200920212839 U CN 200920212839U CN 201651349 U CN201651349 U CN 201651349U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- lining
- fly
- full
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
The utility model relates to a butterfly valve, in particular to a butterfly valve with a fully-bushed valve rod, which comprises a valve body, an end cover, a valve rod, a butterfly plate, a bush and split collars, wherein the valve rod is penetrated through the central shaft of the valve body to be fixedly connected with the butterfly plate; the bush is formed by an upper bush and a lower bush which are respectively sleeved at the two ends of the valve rod; the bottom part of the valve rod is positioned by an inner split collar and is sealed by the end cover; the top part of the valve rod is connected with a driving device; and the butterfly valve with the fully-bushed valve rod is characterized in that the two ends of the valve rod are respectively provided with steps which are in clearance fit with the upper and the lower bushes, and the upper and lower bushes are movably matched with the steps. The utility model prevents the whole butterfly valve from being damaged because the valve rod is adhered to the valve body due to medium corrosion, and prolongs the service life of the butterfly valve. The valve is opened quickly and closed firmly, reduces the friction between a sealing ring and a sealing socket, and relieves the torque force of the valve rod and the driving device.
Description
Technical field
The utility model relates to a kind of fly valve, relates in particular to the full lining fly valve of a kind of valve rod.Be mainly used in the fields such as oil, petrochemical industry, chemical industry, metallurgy, electric power, as throttling arrangement, controlling device or closed circuit seal arrangement.
Background technique
Fly valve is meant that closure member (flap or butterfly plate) is a disk, rotates a kind of valve that reaches open and close around valve shaft, and main rising cut off and throttling usefulness on pipeline.The fly valve open-shut device is a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the purpose that opens and closes or regulate.Normally less than 90 °, fly valve and valve rod itself do not have self-lock ability to the fly valve standard-sized sheet to complete shut-down, for the location of butterfly plate, install worm speed reducer additional on valve rod.Adopt worm speed reducer, not only can make butterfly plate have self-lock ability, butterfly plate is stopped on the arbitrary position, can also improve the operating characteristics of valve.
Fly valve is divided into soft seal fly valve and hard two kinds of the fly valves that seal, and is three eccentric metal hard sealed fly valve and seal most widely used in the fly valve firmly.Three eccentric metal hard sealed fly valve and traditional soft sealing fly valve compare have high temperature resistant, operate light, open and close not have friction, the moment along with driving mechanism when closing increases performances such as coming compensation sealing, thereby has improved the sealability of fly valve and increase the service life.The sealing configuration of three eccentric metal hard sealed fly valve and the flexibility ratio of valve rod are the keys of fly valve, directly have influence on the overall performance and the working life of fly valve.The valve rod 3 of fly valve in the market all is directly to lead to afterbody from the head, and valve rod 3 closely cooperates with lining 5 and do not have the gap, causes when butterfly plate 4 startings, and two faces that contact with valve body 1 at last lining 51 and following lining 52 produce two equal resistances.Simultaneously, the divided ring of valve rod 3 bottoms 6 is combined closely with valve rod 3, and the convex surface of divided ring 6 internal diameters combine with valve rod 3 grooves the valve rod locking, has caused the 3rd resistance to the valve rod 3 of rotation.In addition, the end face of valve rod 3 afterbodys is directly to combine with end cap 2 by vertical force, and its tail end face and end cap 2 produced friction when valve rod 3 rotated, thereby makes valve rod 3 be subjected to the influence of the 4th resistance when rotating.These resistances can increase along with the influence of the pressure of fluid, the height temperature difference, service time and aggressive medium, and flexible poor performance when causing butterfly plate 4 startings has increased the torque force of butterfly plate 4 startings, even can damage drive unit.
And, make the valve body 1 and the two ends up and down of valve rod 3 have the part of 6-8 millimeter directly to contact because last lining 51 on the valve rod 3 and following lining 52 sizes are short, can cause aggressive medium directly to contact valve rod 3; After long-time the use, valve rod 3 corrodes, and bonding with valve body 1, causes the damage of whole fly valve.
Summary of the invention
It is little that the purpose of this utility model provides a kind of opening resistance, and toggle speed is influenced by working pressure and flowing medium soon and not, the full lining fly valve of the valve rod of long service life.
The utility model is achieved in that the full lining fly valve of a kind of valve rod, comprises valve body, end cap, valve rod, butterfly plate, lining and divided ring; Described valve rod passes the central shaft of valve body, is connected with butterfly plate; Described lining is made of last lining and following lining, is enclosed within the two ends of valve rod respectively; The bottom of described valve rod is located by interior divided ring, and is sealed by end cap; The top of valve rod is connected with drive unit; It is characterized in that: described valve rod two ends are respectively equipped with the step with last lining and following lining Spielpassung, and the described lining of going up cooperates with following lining and step are movable.
The described lining of going up all stretches into certain-length in the valve body cavity with following lining.
Between the mount inlet of described valve body and the last lining packing ring is set, leaves the gap between itself and the last lining.
Annular shallow slot is established in the auxiliary section of described stem bottom and divided ring.
The internal diameter angle of falling R of described divided ring becomes sphere; The internal diameter angle of falling R of described packing ring becomes sphere.
Leave the gap between described divided ring and the following lining.
Be provided with thrust-bearing between the bottom of described end cap and divided ring, the bottom of end cap and valve rod keeps the gap.
Described thrust-bearing needle bearing.
The step at the two ends of described valve rod is provided with oil groove.
The beneficial effects of the utility model are: because lining grows valve block internal diameter and cooperates with valve lever clearance, thereby prevented that valve rod from causing whole fly valve damage owing to dielectric corrosion and valve body adhesion, prolonged the working life of fly valve.Afterbody adapted thrust-bearing, two ends annulus are track, and up and down lining all plays the effect of dissolving resistance, make valve opening fast, close tightly, have reduced the frictional force of seal ring and sealing seat, have alleviated the torque force of valve rod and drive unit.
Description of drawings
Fig. 1 is the generalized section of the fly valve of prior art
Fig. 2 is for adopting the generalized section of fly valve of the present utility model;
Fig. 3 is a valve rod and the schematic representation that cooperates of part.
Specific embodiment
Below in conjunction with drawings and Examples the utility model is elaborated:
The utility model is the full lining fly valve of a kind of valve rod, and the full lining fly valve of a kind of valve rod comprises valve body 1, end cap 2, valve rod 3, butterfly plate 4, lining 5 and divided ring 6; Described valve rod 3 passes the central shaft of valve body 1, is connected with butterfly plate 4; Described lining 5 is made of last lining 51 and following lining 52, is enclosed within the two ends of valve rod 3 respectively; The bottom of described valve rod 3 is located by divided ring 6, and by end cap 2 sealings; The top of valve rod 3 is connected with drive unit; It is characterized in that: described valve rod 3 two ends are respectively equipped with the step 31 with last lining 51 and following lining 52 Spielpassung, describedly go up that lining 51 and following lining 52 and step 31 are movable to cooperate the activity cooperation.Described gap of going up between lining 51 and following lining 52 and the step 31 is 0.15 millimeter, thereby makes that going up lining 51 all can freely rotate on valve rod 3 with following lining 52, does not shake but can not produce.Go up simultaneously between the axis hole of lining 51 and following lining 52 and valve body 1 and also leave 0.05 mm clearance, make lining 5 in axis hole, be free to rotate but do not shake.In addition, between divided ring 6 and following lining 52, leave 0.15 millimeter gap; Between packing ring 7 and last lining 51, leave 0.15 millimeter gap.Like this, valve rod 3 is in rotating process, can not produce friction between the last lining 51 of valve rod 3 and activity and the following lining 52, can not produce friction between movable last lining 51 and following lining 52 and the valve body 1 yet, thereby dissolved resistance, solved traditional fly valve in unlatching and closing course, lining and valve rod and valve body fricative two big resistances.The described lining 51 of going up all stretches into 4-6 millimeter in valve body 1 cavity with following lining 52.Make valve rod 3 directly not contact, stopped the erosion of aggressive medium, thereby prolonged the working life of fly valve valve rod 3 with valve body 1.
Annular shallow slot 32 is established in the auxiliary section of the bottom of described valve rod 3 and divided ring 6.Described divided ring 6 is enclosed within on the annular shallow slot 32 and cooperates with valve rod 3.The internal diameter angle of falling R of described divided ring 6 becomes sphere, and the bottom of valve rod 3 can be rotated freely on the internal diameter circular arc spherical surface of divided ring 6 like this, has also prevented that the bottom of valve rod 3 from outwards moving simultaneously.Between the mount inlet of described valve body 1 and the last lining 51 packing ring 7 is set, itself and 51 of last linings leave the gap.The internal diameter angle of falling R of described packing ring 7 becomes sphere, also allows the top of valve rod 3 rotate on the internal diameter circular arc spherical surface of packing ring 7, and prevents that the top of valve rod 3 is outwards mobile.Like this, divided ring 6 and packing ring 7 form up and down and cooperate, and become the track of valve rod 3, make two of valve rod 3 keep concentric balance.Because combining between valve rod 3 and divided ring 6, the packing ring 7 do not produce resistance, thereby solved traditional fly valve in unlatching and closing course, valve rod 3 is locked by divided ring and the 3rd resistance producing.
Be provided with thrust-bearing 8 between described divided ring 6 bottoms and the end cap 2, described thrust-bearing 8 is a needle bearing, selects the little shape thrust-bearing of GB/272-64 NBS level for use.Owing to be provided with thrust-bearing 8, make and reserve 0.15 millimeter gap between the bottom of valve rod 3 and the end cap 2, avoided valve rod 3 to contact with the direct of end cap 2, thereby increased the flexibility that valve rod 3 rotates, solved traditional fly valve in unlatching and closing course, the bottom of valve rod 3 directly combines the resistance that produces with end cap 2.
The two ends of described valve rod 3 are provided with oil groove 33, can add butter under the situation of engineering permission, further improve the flexibility ratio of valve rod 3.
Claims (9)
1. the full lining fly valve of valve rod comprises valve body (1), end cap (2), valve rod (3), butterfly plate (4), lining (5) and divided ring (6); Described valve rod (3) passes the central shaft of valve body (1), is connected with butterfly plate (4); Described lining (5) is made of last lining (51) and following lining (52), is enclosed within the two ends of valve rod (3) respectively; The bottom of described valve rod (3) is located by divided ring (6), and is sealed by end cap (2); The top of valve rod (3) is connected with drive unit; It is characterized in that: described valve rod (3) two ends are respectively equipped with the step (31) with last lining (51) and following lining (52) Spielpassung; Described upward lining (51) and following lining (52) cooperate with step (31) is movable.
2. the full lining fly valve of a kind of valve rod according to claim 1 is characterized in that: described upward lining (51) and following lining (52) all stretch into certain-length in valve body (1) cavity.
3. the full lining fly valve of a kind of valve rod according to claim 1 is characterized in that: annular shallow slot (32) is established in the auxiliary section of the bottom of described valve rod (3) and divided ring (6).
4. the full lining fly valve of a kind of valve rod according to claim 1 is characterized in that: leave the gap between described divided ring (6) and the following lining (52).
5. the full lining fly valve of a kind of valve rod according to claim 1 is characterized in that: between the mount inlet of described valve body (1) and the last lining (51) packing ring (7) is set, leaves the gap between itself and the last lining (51).
6. the full lining fly valve of a kind of according to claim 1 or 5 valve rod is characterized in that: the internal diameter angle of falling R of described divided ring (6) becomes sphere; The internal diameter angle of falling R of described packing ring (7) becomes sphere.
7. the full lining fly valve of a kind of valve rod according to claim 1 is characterized in that: be provided with thrust-bearing (8) between the bottom of described end cap (2) and divided ring (6), end cap (2) keeps the gap with the bottom of valve rod (3).
8. the full lining fly valve of a kind of valve rod according to claim 7 is characterized in that: described thrust-bearing (8) needle bearing.
9. the full lining fly valve of a kind of valve rod according to claim 1 is characterized in that: the step (31) at the two ends of described valve rod (3) is provided with oil groove (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202128396U CN201651349U (en) | 2009-12-09 | 2009-12-09 | Butterfly valve with fully-bushed valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202128396U CN201651349U (en) | 2009-12-09 | 2009-12-09 | Butterfly valve with fully-bushed valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201651349U true CN201651349U (en) | 2010-11-24 |
Family
ID=43116585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202128396U Expired - Fee Related CN201651349U (en) | 2009-12-09 | 2009-12-09 | Butterfly valve with fully-bushed valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201651349U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401187A (en) * | 2011-11-17 | 2012-04-04 | 浙江凯瑞特阀业有限公司 | Butterfly valve with O-shaped sealing ring and bearing |
| CN105114639A (en) * | 2015-09-16 | 2015-12-02 | 吴忠仪表有限责任公司 | Novel butterfly valve |
| CN106015597A (en) * | 2016-05-18 | 2016-10-12 | 中国北方发动机研究所(天津) | Low-driving-torque high-temperature valve bearing structure |
-
2009
- 2009-12-09 CN CN2009202128396U patent/CN201651349U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401187A (en) * | 2011-11-17 | 2012-04-04 | 浙江凯瑞特阀业有限公司 | Butterfly valve with O-shaped sealing ring and bearing |
| CN105114639A (en) * | 2015-09-16 | 2015-12-02 | 吴忠仪表有限责任公司 | Novel butterfly valve |
| CN106015597A (en) * | 2016-05-18 | 2016-10-12 | 中国北方发动机研究所(天津) | Low-driving-torque high-temperature valve bearing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10161530B2 (en) | Valve assembly | |
| CN201651349U (en) | Butterfly valve with fully-bushed valve rod | |
| CN102207204A (en) | High-performance eccentric ball valve | |
| CN102410381A (en) | Bidirectional hard seal ball valve for coal chemical industry | |
| CN201259012Y (en) | Automatic seal stop valve | |
| CN102644760B (en) | Sealing structure of ultrahigh-pressure needle valve | |
| CN201401518Y (en) | Wear-resistant sulfur-resistant dual-seal plate valve | |
| CN209909221U (en) | Critical ball valve | |
| CN111120682A (en) | Plug valve | |
| CN202252163U (en) | High-pressure check valve | |
| CN202188153U (en) | Bidirectional hard-seal fixed-type ball valve used in coal chemical industry | |
| CN211715798U (en) | High-performance low-torque eccentric butterfly valve | |
| CN112096902B (en) | Linear motor and swing cylinder collaborative driving type valve core and valve seat separation type friction-free ball valve | |
| CN212377324U (en) | Ultra-high temperature butterfly valve with external bearing | |
| CN110425297B (en) | High adjustable ratio cock regulating valve | |
| CN210240601U (en) | Durable type stop valve case | |
| CN105546132A (en) | Full-closed sealed type orifice plate throttle valve | |
| CN209100689U (en) | A kind of deformation spherical surface eccentric valve | |
| CN203322297U (en) | Elastic self-sealing butterfly valve | |
| CN205446747U (en) | Complete shut -down closes sealed orifice control valve | |
| CN100363660C (en) | Portable double-sealing rotating cutting valve | |
| CN215950461U (en) | Eccentric full ball valve of double-valve seat | |
| CN202040349U (en) | Valve shaft bushing structure of soft seal butterfly valve | |
| CN219774806U (en) | Prevent rotatory stop valve of valve clack | |
| CN216200600U (en) | Be used for special ventilation butterfly valve of flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Liang Inventor after: Huang Siwei Inventor before: Wang Weidong Inventor before: Huang Siwei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG WEIDONG HUANG SIWEI TO: WANG LIANG HUANG SIWEI |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20171209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |