CN201443608U - Double-eccentric flexible sealing type butterfly valve - Google Patents
Double-eccentric flexible sealing type butterfly valve Download PDFInfo
- Publication number
- CN201443608U CN201443608U CN2009200289887U CN200920028988U CN201443608U CN 201443608 U CN201443608 U CN 201443608U CN 2009200289887 U CN2009200289887 U CN 2009200289887U CN 200920028988 U CN200920028988 U CN 200920028988U CN 201443608 U CN201443608 U CN 201443608U
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- valve
- valve plate
- plate
- valve seat
- double
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- Expired - Fee Related
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Abstract
A double-eccentric flexible sealing type butterfly valve belongs to the technical field of valve devices. The design of butterfly valves in the past is characterized in that a certain angle is left between the center line of the profile of a valve seat and the cambered surface of a valve plate, and the valve plate is easy to abrade with the valve seat when the valve plate is closed or opened, thereby causing the leakage of the valve, the design of a butterfly valve in the past adopts the face contact sealing between the valve seat and the valve plate, and valve seat is easy to be abraded and has short service life if the contact face is large, therefore, the valve is easy to leak. The utility model adopts the technical scheme that a valve plate (6) is installed on a valve rod (15) by deviating to the right or to the back from the center line of the valve rod (15), a flexible valve seat (4) which wraps up an O-shaped ring (5) is sleeved on the valve plate (6), the valve plate (6) is arranged in a valve body (8), and a gland (3) is fixed on the valve body (8) through a bolt. The double-eccentric flexible sealing type butterfly valve has the advantages of high reliability of design, excellent sealing performance and long service life.
Description
Technical field
The utility model relates to the valving technical field, is a kind of two eccentric soft seal type butterfly valve more specifically.
Background technique
Butterfly valve design in the past all is that valve seat section center line and valve plate cambered surface have certain angle, when valve plate is closed or opened, causes valve plate to carve mutually with valve seat easily, causes valve to reveal; Butterfly valve design in the past all is that valve seat and valve plate adopt face contact seal, and the big prooving of valve seat life-span of surface of contact is short, causes valve to reveal easily.
Summary of the invention
For overcoming above-mentioned shortcoming, the purpose of this utility model is a kind of two eccentric soft seal type butterfly valves of design.Its technological scheme is: valve plate is combined by locating stud with valve rod and fixes, and valve rod is connected by parallel key with handle or operating device; It is characterized in that: valve plate is offset the valve rod center line to the right and backward and is installed on the valve rod, and the soft valve seat that is enclosed with O type circle is enclosed within on the valve plate, and valve plate is in valve body, and gland is by being bolted on the valve body.The advantage of this model utility is: existing design has been compared following advantage with all these type of designs in the past: adopt two eccentric designs, adopt the soft valve seat of O type circle and the soft valve seat section center line and the valve plate cambered surface vertical design of teflon or modified Teflon parcel, valve seat is just tangent stressed when valve plate is closed or opened, stressed evenly, increased valve seat working life effectively; Valve seat section and the valve plate place of connecing contact (axially being exactly the line contact) sealing, and moment of torsion is little, sealing reliability is best; Owing to adopt valve seat and valve plate vertical design, it is identical to make the fluid of different direction act on the lifting surface area of any direction of valve seat, and it is identical to make valve can bear the fluid pressure maximum of different direction, and the use of valve adverse current is more reliable; Comprehensive above conclusion: advantages such as existing designed reliability height, good seal, long service life.
Description of drawings
Fig. 1 plan view, Fig. 2 are the zoomed-in view on Fig. 1.In the accompanying drawing: 1, ground spring, 2, socket head screw, 3, gland, 4, soft valve seat, 5, O type circle, 6, valve plate, 7, valve body, 8, the differential cover, 9, differential, 10, hexagon nut, 11, screw rod, 12, bearing, 13, parallel key, 14, valve rod, 15, locating stud, 16, bearing housing, 17, V-seal cup (descending), 18, the V-seal cup (on), 19, the V-seal cup (in), 20, hex head bolt, 21, hexagon nut, 22, dial, 23, handle or manual heads.
Embodiment
Valve plate 6 and valve rod 14 are combined fixing by locating stud 15, valve rod and handle or operating device 23 are connected by parallel key; It is characterized in that: valve plate 6 is offset valve rod 15 center lines to the right and backward and is installed on the valve rod 15, and the soft valve seat 4 that is enclosed with O type circle 5 is enclosed within on the valve plate 6, and valve plate 6 is in valve body 8, and gland 3 is by being bolted on the valve body 8.Valve plate 6 is combined by locating stud 15 with valve rod 14 and fixes, and valve rod is square by parallel key or spindle nose with handle or manual heads 23, flat is connected; When valve is closed fully,, dial 22 is left in handle 23 location be rotated counterclockwise valve open, and between 0 ° of (OFF)-90 ° (ON), adjust, the control fluid flow by valve body 7 location; The opposite direction operated valve is closed, and cuts off fluid.The large scale valve is by operating device control (manual, pneumatic, hydraulic pressure, electronic etc.), and valve operation is basic identical.
Claims (1)
1. two eccentric soft seal type butterfly valves, valve plate (6) are combined by locating stud (15) with valve rod (14) and fix, and valve rod is connected by parallel key with handle or operating device (23); It is characterized in that: valve plate (6) is offset valve rod (15) center line to the right and backward and is installed on the valve rod (15), the soft valve seat (4) that is enclosed with O type circle (5) is enclosed within on the valve plate (6), valve plate (6) is in valve body (8), and gland (3) is by being bolted on the valve body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200289887U CN201443608U (en) | 2009-07-13 | 2009-07-13 | Double-eccentric flexible sealing type butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200289887U CN201443608U (en) | 2009-07-13 | 2009-07-13 | Double-eccentric flexible sealing type butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201443608U true CN201443608U (en) | 2010-04-28 |
Family
ID=42548286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200289887U Expired - Fee Related CN201443608U (en) | 2009-07-13 | 2009-07-13 | Double-eccentric flexible sealing type butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201443608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387780A (en) * | 2017-07-28 | 2017-11-24 | 浙江威肯特泵业有限公司 | A kind of method and high-sealing butterfly valve structure for improving butterfly valve seal performance |
-
2009
- 2009-07-13 CN CN2009200289887U patent/CN201443608U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387780A (en) * | 2017-07-28 | 2017-11-24 | 浙江威肯特泵业有限公司 | A kind of method and high-sealing butterfly valve structure for improving butterfly valve seal performance |
| CN107387780B (en) * | 2017-07-28 | 2018-07-24 | 浙江威肯特智能机械有限公司 | A kind of method and high-sealing butterfly valve structure improving butterfly valve seal performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100428 Termination date: 20130713 |