CN203395210U - High-reliability two-way hard sealed butterfly valve - Google Patents
High-reliability two-way hard sealed butterfly valve Download PDFInfo
- Publication number
- CN203395210U CN203395210U CN201320469266.1U CN201320469266U CN203395210U CN 203395210 U CN203395210 U CN 203395210U CN 201320469266 U CN201320469266 U CN 201320469266U CN 203395210 U CN203395210 U CN 203395210U
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- China
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- valve
- valve plate
- sealing surface
- wedge
- valve rod
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Abstract
The utility model discloses a high-reliability two-way hard sealed butterfly valve. The high-reliability two-way hard sealed butterfly valve comprises a valve body (1), a valve plate (2) and a valve rod (3), the valve plate is provided with a valve plate sealing surface (4) with a certain inclination, the valve plate sealing surface is provided with a wedge-shaped circular ring (5) matched with the inclination of the valve plate sealing surface, the wedge-shaped circular ring is provided with a pressing sleeve (6) which is fixedly connected with the valve body, and when fluid flows through the valve plate, the wedge-shaped circular ring can generate displacement along the valve plate sealing surface. The high-reliability two-way hard sealed butterfly valve has the advantages that reliable sealing is achieved through the valve plate sealing surface with a certain inclination and the wedge-shaped circular ring matched with the valve plate sealing surface, when the liquid pushes the wedge-shaped circular ring, the wedge-shaped circular ring can only generate displacement close to the valve plate relative to the valve plate due to the restraint of the pressing sleeve, the wedge-shaped circular ring becomes tighter and tighter under constant pressing to achieve reliable two-way sealing, the clearance fit between the valve rod and the valve body offers buffer space to the valve rod, and an O-shaped sealing ring between the valve rod and the valve body further provides a buffer medium for the valve rod to prolong the service life of the valve rod.
Description
Technical field
The utility model relates to hard seal butterfly valve, relates in particular to high reliability two-way hard seal butterfly valve.
Background technique
Butterfly valve is again Flap valve, is a kind of modulating valve simple in structure, and the switch that also can be used for low pressure pipeline medium is simultaneously controlled.Butterfly valve refers to that closure member (flap or butterfly plate) is disk, rotates to reach a kind of valve of open and close around valve shaft, and on pipeline, main rising cut off and throttling action.Butterfly valve open-shut device is a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the object that opens and closes or regulate.Butterfly valve is applicable to carry on the pipeline of various corrosivity, non-corrosive fluids medium in the engineering systems such as producer, coal gas, rock gas, liquefied petroleum gas (LPG), town gas, cold and hot air, chemical industry smelting and generation environment-friendly, for regulating and block flowing of medium.By structural type, be divided into central seal butterfly valve, single eccentric sealed butterfly valve, two eccentric sealed butterfly valve, three eccentric sealed butterfly valves, by seal form, be divided into soft sealing butterfly valve and hard seal butterfly valve, wherein three eccentric hard sealed flygates are current more advanced butterfly valves, it is eccentric metal sealed structure, seal form is metal to metal seal, exchangeable metal o-ring is to metal sealing, corrosion resistant plate and graphite composite plate seal ring are to metal sealing, with respect to soft sealing butterfly valve, sealing effect is bad, reliability is not high, especially can not realize two way sealed.
Model utility content
The technical problems to be solved in the utility model is existing three eccentric hard sealed flygates, and sealing effect is bad, can not realize two way sealed, and a kind of high reliability two-way hard seal butterfly valve is provided for this reason.
The technical solution of the utility model is: high reliability two-way hard seal butterfly valve, it comprises valve body, valve plate and valve rod, described valve plate is provided with the sealing surface of valve plate with constant slope, described sealing surface of valve plate is provided with the wedge shape annulus coordinating with its gradient, described wedge shape annulus is provided with gland, described gland and described valve body are affixed, and when having fluid to flow through valve plate, wedge shape annulus can produce displacement along described sealing surface of valve plate.
The improvement of such scheme is that described valve rod is connected with valve plate by pin, and is Spielpassung between valve rod and valve body.
The further improvement of such scheme is that described valve rod, pin and valve plate are realized and being closely cooperated by bolt.
The further improvement of such scheme is that described valve rod stretches in valve body by axle sleeve, and between the valve rod of axle sleeve below and valve body, adaptation has O RunddichtringO.
Further improving again of such scheme is adaptive flexible parts between described wedge shape annulus and valve body.
The beneficial effects of the utility model are to realize reliable sealing by the wedge shape annulus that has the sealing surface of valve plate of constant slope and coordinate with it, prevention wedge shape annulus due to gland when fluid promotes wedge shape annulus can only produce the displacement near valve plate with respect to valve plate, wedge-shaped blocks can be pressed tighter and tighter, realized reliable two way sealed, Spielpassung between valve rod and valve body gives valve rod buffer space, O RunddichtringO between valve rod and valve body further provides buffer medium to valve rod, and the valve rod life-span is extended.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram;
Fig. 2 is the enlarged view of a in Fig. 1;
In figure, 1, valve body, 2, valve plate, 3, valve rod, 4, sealing surface of valve plate, 5, wedge shape annulus, 6, gland, 7, pin, 8, bolt, 9, axle sleeve, 10, O RunddichtringO, 11, bottom, 12, copper sheathing, 13, elastic member.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1 and Figure 2, the utility model comprises valve body 1, valve plate 2 and valve rod 3, described valve plate is provided with the sealing surface of valve plate 4 with constant slope, described sealing surface of valve plate is provided with the wedge shape annulus 5 coordinating with its gradient, described wedge shape annulus is provided with gland 6, described gland and described valve body are affixed, and when having fluid to flow through valve plate, wedge shape annulus can produce displacement along described sealing surface of valve plate.
Wedge shape annulus refers to the sealed member that longitudinal section is trapezoidal, both ends of the surface are rounded.
Concrete, stem bottom is connected with valve body by bottom 11, between stem bottom and valve body, be filled with copper sheathing 12, the gradient of sealing surface of valve plate is to valve body top, to be tilted gradually by substantially horizontal, the gradient of wedge shape annulus is correspondingly also like this, when fluid flows to the back side from the front of valve plate, fluid promotes wedge shape annulus and moves to valve rod direction, wedge-shaped blocks can be pressed tighter and tighter, realized unidirectional reliable sealing, when fluid flows to from the back side of valve plate when positive, and sealing surface of valve plate can give wedge shape annulus to the thrust away from valve rod direction, wedge-shaped blocks is owing to being stoped and can not move to the direction away from valve rod by gland, and then be subject to gland opposition and near valve rod direction motion, realized reverse reliable sealing.
Preference of the present utility model is that valve rod connects with valve plate by pin, between valve rod and valve body, leave certain interval, can alleviate the impact force that valve rod is subject to like this, in order to allow pin be connected in reliably between valve rod and valve plate, do not produce and rock disengaging, can near valve plate pin, hammer into bolt, bolt connects valve plate and valve rod, and nut covers pin and is exposed at the end outside valve plate, realize the reliable connection of pin.
Valve rod by axle sleeve stretch in valve body install fixing, the impact force being subject in order further to alleviate valve rod, between valve rod that can be below axle sleeve and valve body, adaptation has O RunddichtringO, plays the effect of releasing the pressure.
In order to make wedge shape annulus only be subject to the frictional force that sealing surface of valve plate gives when mobile, can be between wedge shape annulus and valve body adaptive flexible parts, this elastic member can be that O RunddichtringO can be also ball spring.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or without improving, design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (5)
1. high reliability two-way hard seal butterfly valve, it comprises valve body (1), valve plate (2) and valve rod (3), it is characterized in that described valve plate is provided with the sealing surface of valve plate (4) with constant slope, described sealing surface of valve plate is provided with the wedge shape annulus (5) coordinating with its gradient, described wedge shape annulus is provided with gland (6), described gland and described valve body are affixed, and when having fluid to flow through valve plate, wedge shape annulus can produce displacement along described sealing surface of valve plate.
2. high reliability two-way hard seal butterfly valve as claimed in claim 1, is characterized in that described valve rod is connected with valve plate by pin (7), and is Spielpassung between valve rod and valve body.
3. high reliability two-way hard seal butterfly valve as claimed in claim 2, is characterized in that described valve rod, pin and valve plate closely cooperate by bolt (8) realization.
4. high reliability two-way hard seal butterfly valve as claimed in claim 3, is characterized in that described valve rod stretches in valve body by axle sleeve (9), and between the valve rod of axle sleeve below and valve body, adaptation has O RunddichtringO (10).
5. high reliability two-way hard seal butterfly valve as claimed in claim 4, is characterized in that adaptive flexible parts (13) between described wedge shape annulus and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320469266.1U CN203395210U (en) | 2013-08-02 | 2013-08-02 | High-reliability two-way hard sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320469266.1U CN203395210U (en) | 2013-08-02 | 2013-08-02 | High-reliability two-way hard sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203395210U true CN203395210U (en) | 2014-01-15 |
Family
ID=49906743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320469266.1U Expired - Fee Related CN203395210U (en) | 2013-08-02 | 2013-08-02 | High-reliability two-way hard sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203395210U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363134A (en) * | 2013-08-02 | 2013-10-23 | 铜陵市兴达阀门总厂 | High-reliability bi-directional hard sealing butterfly valve |
| CN108105401A (en) * | 2017-12-19 | 2018-06-01 | 樊东升 | A kind of low torque, bi-direction zero-leakage all-metal sealing dish valve |
-
2013
- 2013-08-02 CN CN201320469266.1U patent/CN203395210U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363134A (en) * | 2013-08-02 | 2013-10-23 | 铜陵市兴达阀门总厂 | High-reliability bi-directional hard sealing butterfly valve |
| CN108105401A (en) * | 2017-12-19 | 2018-06-01 | 樊东升 | A kind of low torque, bi-direction zero-leakage all-metal sealing dish 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: 20140115 Termination date: 20200802 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |