CN202252009U - Tri-eccentric hard seal butterfly valve - Google Patents
Tri-eccentric hard seal butterfly valve Download PDFInfo
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- CN202252009U CN202252009U CN2011203073542U CN201120307354U CN202252009U CN 202252009 U CN202252009 U CN 202252009U CN 2011203073542 U CN2011203073542 U CN 2011203073542U CN 201120307354 U CN201120307354 U CN 201120307354U CN 202252009 U CN202252009 U CN 202252009U
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- valve
- valve plate
- hard seal
- sealing
- seal butterfly
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Abstract
The utility model discloses a tri-eccentric hard seal butterfly valve including a valve body, a valve stem, a valve plate connected to the valve stem and a valve seat fixed in the valve body and matched with the valve plate, wherein the outer peripheral face of the valve plate is provided with a sealing member, and the outer peripheral face of the valve plate gradually shrinks along the axial direction. With such arrangement, the tri-eccentric hard seal butterfly valve can effectively ensure the sealing between the valve plate and the valve seat during fluid counter current.
Description
Technical field
The utility model relates to valve technology field, particularly a kind of three eccentric hard seal butterfly valves.
Background technique
Valve is had everything in national economy, and it and production, construction, national defence and people's lives have substantial connection.Valve is mounted in the controlling component in the fluid delivery systems such as various pipelines and equipment, is made up of valve body, flap, valve gap, valve seat, valve rod, Sealing etc., has water conservancy diversion, by functions such as, throttling, shunting, overflow releases.
Valve of a great variety for example, pressed the purpose classification of valve, and valve can be divided into block valve, safety check, safety valve, modulating valve and diverter valve.Wherein block valve comprises gate valve, stop valve, stopcock, ball valve and butterfly valve etc. again, below content will be that example describes in detail with three eccentric hard seal butterfly valves in the butterfly valve.
Three eccentric hard seal butterfly valves are called Flap valve again; Its mainly by valve body, be arranged at valve seat in the valve body, with suitable valve plate of valve seat and the valve rod that is connected with valve plate; It is that rotate in the axle center with the valve rod that valve rod can drive valve plate, and then realizes the keying of three eccentric hard seal butterfly valves.Wherein, the face that matches with valve seat of valve plate is provided with seal groove, is provided with Sealing in the seal groove, and the sealing part is rigid Sealing, and the sealing part protrudes from the face that matches with valve seat of valve plate.So can effectively be guaranteed under the Sealing effect of sealing between the two between valve plate and the valve seat.
In the existing technology, three eccentric hard seal butterfly valves comprise monocline face three eccentric hard seal butterfly valves and inclined-plane three eccentric hard seal butterfly valves in the same way, and wherein monocline face three eccentric hard seal butterfly valves are used comparatively extensive.
Please refer to Fig. 1, Fig. 1 is the valve seat and the valve plate schematic cross-section of monocline face three eccentric hard seal butterfly valves in the existing technology.
It is the two-part valve plate 02 in the left and right sides in axle center that monocline face three eccentric hard seal butterfly valves mean with valve rod 01, and the fitting surface between wherein a part of valve plate 02 and the valve seat 03 is the inclined-plane, and another part fitting surface is the plane.
Yet; Monocline face three eccentric hard seal butterfly valves of the prior art are when fluid carries out adverse current, when promptly valve plate 02 receives back-pressure; Because the fitting surface part between its valve plate 02 and the valve seat 03 is the inclined-plane; Another part is the plane, so fluid is inhomogeneous to the active force of the face that matches with valve seat 03 of valve plate 02, and then causes the sealing between valve plate 02 and the valve seat 03 relatively poor.
Therefore, when how to improve fluid countercurrent current, the sealing between valve plate and the valve seat becomes those skilled in the art's important technological problems to be solved.
The model utility content
In view of this, the utility model provides a kind of three eccentric hard seal butterfly valves, and it can effectively improve the sealing between valve plate and the valve seat.
For realizing above-mentioned purpose, the utility model provides following technological scheme:
The utility model provides a kind of three eccentric hard seal butterfly valves; Comprise valve body, valve rod, the valve plate that is connected with said valve rod and be fixed in the said valve body and the valve seat that matches with said valve plate; The outer circumferential face of said valve plate is provided with Sealing, and the outer circumferential face of said valve plate is convergent vertically.
Preferably, the suitable sealing surface of the outer circumferential face of said valve seat and said valve plate is convergent vertically, and identical with the outer circumferential face convergent direction of said valve plate.
Preferably, the outer circumferential face of said valve plate is provided with sealed groove, and said Sealing is fixedly set in said sealed groove and protrudes from said sealed groove.
Preferably, said valve plate and said valve rod opposite position are provided with pin-and-hole, and said valve rod is connected in said valve plate through the pin that is plugged in said pin-and-hole.
Preferably, said valve seat passes through screw in said valve body.
Preferably, be provided with seal arrangement between said valve rod and the said valve body.
Preferably, said valve plate and said valve seat are ellipticity.
The utility model provides a kind of three eccentric hard seal butterfly valves; Comprise valve body, valve rod, the valve plate that is connected with said valve rod and be fixed in the said valve body and the valve seat that matches with said valve plate; The outer circumferential face of said valve plate is provided with Sealing, and the outer circumferential face of said valve plate is convergent vertically.
It is pointed out that valve plate is that the axle center is divided into two-part with the valve rod, being ramp structure with respect to this two-part circumferential surface of existing technology is that the three eccentric hard seal butterfly valves that the utility model provides are the double inclined plane Seal Design.So when valve plate received back-pressure, the valve plate outer circumferential face was stressed evenly.In addition, valve seat can be passed from the trend valve plate under the medium effect, and the relative displacement of valve plate and valve seat is well compensated.Thereby it is very tight to reach the sealing that makes between Sealing and the valve seat, can not leak.Behind sealing surface wear, valve seat just can reach reliable sealing from trend valve plate feed compensation again.
Therefore, the three eccentric hard seal butterfly valves that the utility model provides, during fluid countercurrent current, it can effectively improve the sealing between valve seat and the valve plate.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the valve seat and the valve plate schematic cross-section of monocline face three eccentric hard seal butterfly valves in the existing technology;
Fig. 2 is three eccentric hard seal butterfly valve sectional structure schematic representation in the utility model embodiment;
Fig. 3 is an A-A portion cross section structure schematic representation among Fig. 2.
Embodiment
The utility model provides a kind of three eccentric hard seal butterfly valves, when it can effectively improve fluid countercurrent current, and the sealing between valve seat and the valve plate.
To combine the accompanying drawing among the utility model embodiment below, the technological scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is three eccentric hard seal butterfly valve sectional structure schematic representation in the utility model embodiment; Fig. 3 is an A-A portion cross section structure schematic representation among Fig. 2.
This embodiment provides a kind of three eccentric hard seal butterfly valves; Comprise valve body 11, valve rod 12, the valve plate 13 that is connected with valve rod 12 and be fixed in the valve body 11 and the valve seat 14 that matches with valve plate 13; The outer circumferential face of valve plate 13 is provided with the Sealing (not shown), and the outer circumferential face of valve plate 13 is convergent vertically.
Need to prove that the outer circumferential face of valve plate 13 is provided with Sealing, the sealing between valve plate 13 and the valve seat 14 is to realize through the sealing between Sealing and the valve seat 14.The outer circumferential face of valve plate 13 is convergent vertically, and promptly when the fluid drag flow, the big face end of valve plate 13 bears pressure, and during fluid countercurrent current, the facet ends of valve plate 13 is born the pressure of fluid.Because the outer circumferential face of valve plate 13 is convergent vertically, be leg-of-mutton gap so form the cross section between the outer circumferential face of valve plate 13 and the valve seat 14.
In addition, valve plate 13 is that the axle center is divided into two-part with valve rod 12, is ramp structure with respect to this two-part circumferential surface of existing technology, and promptly the three eccentric hard seal butterfly valves that provide of the utility model are the double inclined plane Seal Design.
So be provided with, when valve plate 13 received back-pressure, valve plate 13 outer circumferential faces were stressed evenly.In addition, valve seat 14 can be passed from trend valve plate 13 under the medium effect, and valve plate 13 is well compensated with the relative displacement of valve seat 14.Thereby it is very tight to reach the sealing that makes between Sealing and the valve seat 14, can not leak.Behind sealing surface wear, valve seat 14 just can reach reliable sealing from trend valve plate 13 feed compensations again.
Therefore, the three eccentric hard seal butterfly valves that the utility model provides, during fluid countercurrent current, it can effectively improve the sealing between valve seat 14 and the valve plate 13.
In addition, in the preferred version that the utility model provides, the suitable sealing surface of the outer circumferential face with valve plate 13 of valve seat 14 is convergent vertically, and identical with the outer circumferential face convergent direction of valve plate 13.Need to prove that the sealing surface of the valve seat 14 that matches with valve plate 13 is convergent vertically, the sealing surface angle of inclination of valve seat 14 needs the angle of inclination less than the circumferential surface of valve plate 13.
So be provided with, when valve plate 13 received reverse back pressure, it had the trend of motion vertically, because the sealing surface angle of inclination of valve seat 14 needs the angle of inclination less than the circumferential surface of valve plate 13.So the tightness degree that is arranged between the sealing surface of Sealing and valve seat 14 on the valve plate 13 will increase, and then, the reliability of sealing between valve seat 14 and the Sealing further improved.
In order to strengthen the connection reliability of Sealing and valve plate 13 outer circumferential faces, the Placement of Sealing that this embodiment provided and valve plate 13 can be provided with as follows.Can be provided with sealed groove on the outer circumferential face of valve plate 13, Sealing is fixedly set in sealed groove, and Sealing need protrude from sealed groove.
So be provided with, Sealing is assemblied in through sealed groove on the outer circumferential face of valve plate 13, has effectively improved the connection reliability between Sealing and the valve plate 13, simultaneously, has effectively improved the sealability between Sealing and the valve plate 13.
In addition, the three eccentric hard seal butterfly valves that this embodiment provided, its valve plate 13 can be connected together through following mode with valve rod 12.Valve plate 13 is provided with pin-and-hole with valve rod 12 opposite positions, and valve rod 12 can be connected in valve plate 13 through the pin 15 that is plugged in pin-and-hole.
Certainly, valve plate 13 also can be connected in valve rod 12 through alternate manner, such as, being threaded, Placement such as riveted joint, this embodiment is not done concrete qualification to the Placement between valve plate 13 and the valve rod 12.
Equally, the valve seat 14 that this embodiment provided can certainly, also can be connected through alternate manner through screw in valve body 11, such as, Placements such as riveted joint, clamping.
In order to prevent that the problem of leakage or gas leakage from appearring in three eccentric hard seal butterfly valves that this embodiment provides, the three eccentric hard seal butterfly valves that this embodiment provided can be provided with seal arrangement between its valve rod 12 and the valve body 11.For example can on valve body 11 and face that valve rod 12 matches, be provided with groove, fill some in this groove and have the packing of better sealability.
Need to prove that the valve plate 13 described in above-mentioned each embodiment can be specially the ellipticity structure.Certainly, so be provided with, can make that the suffered when rotated fluid resistance square of valve plate 13 is less, be prone to realize the keying of three eccentric hard seal butterfly valves.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiments shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (7)
1. eccentric hard seal butterfly valve; Comprise valve body, valve rod, the valve plate that is connected with said valve rod and be fixed in the said valve body and the valve seat that matches with said valve plate; The outer circumferential face of said valve plate is provided with Sealing, it is characterized in that, the outer circumferential face of said valve plate is convergent vertically.
2. as claimed in claim 1 three eccentric hard seal butterfly valves is characterized in that, the suitable sealing surface of the outer circumferential face of said valve seat and said valve plate is convergent vertically, and identical with the outer circumferential face convergent direction of said valve plate.
3. as claimed in claim 2 three eccentric hard seal butterfly valves is characterized in that the outer circumferential face of said valve plate is provided with sealed groove, and said Sealing is fixedly set in said sealed groove and protrudes from said sealed groove.
4. as claimed in claim 3 three eccentric hard seal butterfly valves is characterized in that, said valve plate and said valve rod opposite position are provided with pin-and-hole, and said valve rod is connected in said valve plate through the pin that is plugged in said pin-and-hole.
5. as claimed in claim 4 three eccentric hard seal butterfly valves is characterized in that, said valve seat passes through screw in said valve body.
6. as claimed in claim 5 three eccentric hard seal butterfly valves is characterized in that, are provided with seal arrangement between said valve rod and the said valve body.
7. like each described three eccentric hard seal butterfly valve of claim 1-6, it is characterized in that said valve plate and said valve seat are ellipticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203073542U CN202252009U (en) | 2011-08-22 | 2011-08-22 | Tri-eccentric hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203073542U CN202252009U (en) | 2011-08-22 | 2011-08-22 | Tri-eccentric hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252009U true CN202252009U (en) | 2012-05-30 |
Family
ID=46113252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203073542U Expired - Lifetime CN202252009U (en) | 2011-08-22 | 2011-08-22 | Tri-eccentric hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252009U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653813A (en) * | 2021-09-16 | 2021-11-16 | 浙江贝尔控制阀门有限公司 | Maintenance mechanism of three eccentric butterfly valve |
| CN113653814A (en) * | 2021-09-16 | 2021-11-16 | 浙江贝尔控制阀门有限公司 | On-line maintenance separating seat three-eccentric butterfly valve |
-
2011
- 2011-08-22 CN CN2011203073542U patent/CN202252009U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653813A (en) * | 2021-09-16 | 2021-11-16 | 浙江贝尔控制阀门有限公司 | Maintenance mechanism of three eccentric butterfly valve |
| CN113653814A (en) * | 2021-09-16 | 2021-11-16 | 浙江贝尔控制阀门有限公司 | On-line maintenance separating seat three-eccentric butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |