CN202733009U - Flange two-way pressure hard sealing butterfly valve - Google Patents
Flange two-way pressure hard sealing butterfly valve Download PDFInfo
- Publication number
- CN202733009U CN202733009U CN 201220392863 CN201220392863U CN202733009U CN 202733009 U CN202733009 U CN 202733009U CN 201220392863 CN201220392863 CN 201220392863 CN 201220392863 U CN201220392863 U CN 201220392863U CN 202733009 U CN202733009 U CN 202733009U
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- valve
- valve seat
- butterfly
- valve body
- sealing
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Abstract
The utility model discloses a flange two-way pressure hard sealing butterfly valve which comprises a valve body, a valve rod arranged on the valve body and a butterfly plate which is arranged on the valve rod. A movable valve seat is arranged between the periphery side of the butterfly plate and the inner wall of the valve body, the position where the butterfly plate and the movable valve seat are close is provided with a metal sealing ring, and the metal sealing ring is fixed on the butterfly plate by inner hexagon screws. The contacting face of the valve body and one end of the movable valve seat in a main pressure-bearing direction is provided with a limiting stopping block. The excircle of the movable valve seat in the main pressure-bearing direction is provided with a sealing groove, and an O-shaped ring is arranged inside the sealing groove. The sealing ring is fixed on the butterfly plate through the pressing plate, the excirle of the movable valve seat is provided with the sealing groove in a main bearing direction, and the O-shaped ring is arranged. Zero leakage sealing of the contacting face of the excircle of the movable valve seat and an inner cavity of the valve body is achieved, and the requirement that the contacting face of the valve seat and the inner cavity of the valve body is of no leakage is met. The flange two-way pressure hard sealing butterfly valve is simple in structure and low in cost and can achieve two-way sealing reliably.
Description
Technical field
The utility model relates to butterfly valve, specifically flange Bidirectional pressure hard seal butterfly valve.
Background technique
The butterfly valve of prior art structurally substantially all is to be constituted by the valve rod of valve body, valve inner, the butterfly plate that is enclosed within on the valve rod at present, valve rod is by the drive unit driven rotary of peripheral hardware, then butterfly plate is followed valve rod rotary work in valve body, this shows, the butterfly plate periphery is a technology emphasis with the sealing of valve interior wall, but existing butterfly valve seal effect and bad, endurance is inadequate, will produce the poor problem of sealing in short time, directly affect the performance of butterfly valve; Also having in addition the more important, is exactly to solve the problem that seals after can't solving at present bidirectional pressing.So be a kind of brand-new butterfly valve of necessary exploitation at this point.
In view of this, for the problems referred to above, propose a kind of reasonable in design and effectively improve the flange Bidirectional pressure hard seal butterfly valve of above-mentioned disappearance.
The model utility content
The purpose of this utility model is to provide flange Bidirectional pressure hard seal butterfly valve, and metal o-ring is fixed by bolts on the butterfly plate by pressing plate, on one side movable valve seat cylindrical has seal groove in main pressure-bearing direction, O type circle is set.Realization activity valve seat cylindrical and body cavity surface of contact zero revealed sealing, and valve seat and body cavity surface of contact are without revealing requirement when guaranteeing bidirectional pressing.The utility model is simple in structure, and cost is low, can realize reliably two way sealed.
In order to reach above-mentioned purpose, the utility model has adopted following technological scheme, and flange Bidirectional pressure hard seal butterfly valve comprises valve body, is installed in valve rod on the valve body, is installed in the butterfly plate on the valve rod; Be provided with movable valve seat between described butterfly plate outer circumferential side and the valve interior wall, and the close position of butterfly plate and movable valve seat is provided with metal o-ring, described metal o-ring is fixed on the butterfly plate with socket head screw by pressing plate; Described movable valve seat cylindrical has seal groove on one side in main pressure-bearing direction, mounting O-shaped rings in the groove; Described butterfly plate, pressing plate, metal o-ring, O type circle form dish plate sealing pair assembly parts jointly; Described valve body arranges positive stop in main pressure-bearing direction and movable valve seat one end in contact face.
Described movable valve seat endoporus through three eccentric processing after, dish plate sealing pair assembly parts precision-fit is in movable valve seat; Hard alloy metal sealing surface by built-up welding in dish plate sealing pair assembly parts Multi-layer sealing face and the movable valve seat closely cooperates together.
Described butterfly plate is fixed on the valve rod with straight pin.
Described butterfly plate outer circumference side edge face be the circular cone inclined-plane with movable valve seat inner side end and tapering identical.
Be respectively arranged with Upper shaft sleeve and Lower shaft sleeve between two ends and the valve body about the described valve rod, described Upper shaft sleeve and Lower shaft sleeve all belong to self oiling bearing; Described valve rod is engaged on the valve body by single direction thrust ball bearing at afterbody.
Also be respectively arranged with filler and bottom on the valve body at two ends about the described valve rod; Described filler top is fixed with Gland, also is provided with sealing gasket between described bottom and the valve body.
Compared to prior art, the utility model butterfly valve has following beneficial effect:
Movable valve seat cylindrical has seal groove on one side in main pressure-bearing direction, and O type coil structures is set.Realization activity valve seat cylindrical and body cavity surface of contact zero revealed sealing, and valve seat and body cavity surface of contact are without revealing requirement when guaranteeing bidirectional pressing.
O type circle adopts the fluorine rubber (FDM) of special processing maximum operation (service) temperature to reach 300 ℃, can not affect because of new structure the usability of three eccentric hard sealed flygates.
Valve body arranges limit structure in main pressure-bearing direction and movable valve seat one end in contact face, and movable valve seat can not produce a large amount of Influence of Displacement sealings when guaranteeing main pressure-bearing pressuring direction, thereby guarantees main pressure-bearing direction sealing.
Valve body self oiling bearing setting up and down makes valve rod can not enter stuckly because of impurity in the pipeline, does not need artificial lubricating oil filling, prevents the valve rod locking, stuck phenomenon.
The valve rod afterbody arranges thrust ball bearing and valve body cooperating structure, reduces the increase of valve rod moment unlatching frictional force, improves the wear-resisting property of valve rod, reduces and opens the rapid opening and closing valve of the better realization of moment of torsion.
Surface hardness and wear resistance are improved by special nitriding treatment in the stem material surface.
Description of drawings
Fig. 1 is the structural front view of the utility model flange Bidirectional pressure hard seal butterfly valve;
Fig. 2 is the left pseudosection of Fig. 1;
Fig. 3 is the partial enlarged drawing of Fig. 2.
Among the figure: 1, bottom; 3, sealing gasket; 4, Bearing housing; 5, single direction thrust ball bearing; 6, Lower shaft sleeve; 7, valve body; 8, movable valve seat; 9, O type circle; 10, valve rod; 11, butterfly plate; 12, straight pin; 13, pressing plate; 14, socket head screw; 15, seal ring; 16, Upper shaft sleeve; 17, filler; 18, Gland; 22, support; 30, twin-stage worm-gear driven device; 31, positive stop.
Embodiment
Relevant detailed description of the present utility model and technology contents cooperate description of drawings as follows, yet accompanying drawing only provides the usefulness of reference with explanation, and the utility model is limited.
According to Fig. 1-shown in Figure 3, flange Bidirectional pressure hard seal butterfly valve comprises valve body 7, is installed in valve rod 10 on the valve body, is installed in the butterfly plate 11 on the valve rod; Be provided with movable valve seat 8 between described butterfly plate outer circumferential side and the valve interior wall, and the close position of butterfly plate and movable valve seat is provided with metal o-ring 15, described metal o-ring is fixed on the butterfly plate by pressing plate 13 usefulness socket head screws 14; Described valve body arranges positive stop 31 in main pressure-bearing direction and movable valve seat one end in contact face.Described movable valve seat cylindrical has seal groove on one side in main pressure-bearing direction, mounting O-shaped rings 9 in the groove; Described butterfly plate, pressing plate, metal o-ring, O type circle form dish plate sealing pair assembly parts jointly.Described movable valve seat endoporus through three eccentric processing after, dish plate sealing pair assembly parts precision-fit is in movable valve seat; Hard alloy metal sealing surface by built-up welding in dish plate sealing pair assembly parts Multi-layer sealing face and the movable valve seat closely cooperates together.Described butterfly plate is fixed on the valve rod with straight pin 12.Described butterfly plate 11 outer circumference side edge face be the circular cone inclined-plane with movable valve seat 8 inner side ends and tapering identical.Be respectively arranged with Upper shaft sleeve 16 and Lower shaft sleeve 6 between two ends and the valve body about the described valve rod, described Upper shaft sleeve and Lower shaft sleeve all belong to self oiling bearing; Described valve rod is engaged on the valve body by single direction thrust ball bearing 5 at afterbody.Also be respectively arranged with filler 17 and bottom 1 on the valve body at two ends about the described valve rod; Described filler top is fixing with Gland 18, also is provided with sealing gasket 3 between described bottom and the valve body.Described valve body upper end is connected with twin-stage worm-gear driven device 30 by support 22, and this twin-stage worm-gear driven device acts on the valve rod upper end and drives stem movement.
The butterfly valve metal o-ring is fixed by bolts on the butterfly plate by pressing plate, on one side movable valve seat cylindrical has seal groove in main pressure-bearing direction, O type coil structures is set.Realization activity valve seat cylindrical and body cavity surface of contact zero revealed sealing, and valve seat and body cavity surface of contact are without revealing requirement when guaranteeing bidirectional pressing.
Movable valve seat endoporus through three eccentric processing after, dish plate sealing pair assembly parts precision-fit is in movable valve seat.Hard alloy metal sealing surface by built-up welding in dish plate assembly parts Multi-layer sealing face and the movable valve seat closely cooperates together, realizes that dish plate sealing pair gravity fixed valve base can not produce large displacement.Fly out because manifold pressure raises suddenly for valve uses the security activity valve seat, have with a certain distance from movable valve seat at the uniform positive stop that is provided with of secondary pressure-bearing direction, can not fix movable valve seat.When both direction was exerted pressure, movable valve seat can be movable, can automatically regulate compression seal face position, alleviates any pressure concentration of sealing surface.Make the uniform pressurized of sealing surface, thereby guarantee seal pressure, alleviate the leakage of exerting pressure and producing.Thereby reach the requirement of the sealing load malleation back-pressure of Bidirectional pressure, satisfy the two way sealed effect.
Movable valve seat bidirectional sealed butterfly valve is realized the two way sealed requirement than common one-way sealing butterfly valve.Therefore the use that can replace ball valve in the water return pipeline reduces cost.With three eccentric hard sealed flygate costs of the ordinary construction advantage such as be more or less the same.
Movable valve seat pile-up welding hard alloy STL sealing surface adopts special welding procedure, can not make because of built-up welding the deformation effect O RunddichtringO sealability of movable valve seat generation, and sealing effect is good.
The above only is preferred embodiment of the present utility model, and non-in order to limit claim of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to claim of the present utility model.
Claims (6)
1. flange Bidirectional pressure hard seal butterfly valve comprises valve body, is installed in valve rod on the valve body, is installed in the butterfly plate on the valve rod; It is characterized in that, be provided with movable valve seat between described butterfly plate outer circumferential side and the valve interior wall, and the close position of butterfly plate and movable valve seat is provided with metal o-ring, described metal o-ring is fixed on the butterfly plate with socket head screw by pressing plate; Described movable valve seat cylindrical has seal groove on one side in main pressure-bearing direction, mounting O-shaped rings in the groove; Described butterfly plate, pressing plate, metal o-ring, O type circle form dish plate sealing pair assembly parts jointly; Described valve body arranges positive stop in main pressure-bearing direction and movable valve seat one end in contact face.
2. flange Bidirectional pressure hard seal butterfly valve according to claim 1 is characterized in that, described movable valve seat endoporus through three eccentric processing after, dish plate sealing pair assembly parts precision-fit is in movable valve seat; Hard alloy metal sealing surface by built-up welding in dish plate sealing pair assembly parts Multi-layer sealing face and the movable valve seat closely cooperates together.
3. flange Bidirectional pressure hard seal butterfly valve according to claim 1 is characterized in that described butterfly plate is fixed on the valve rod with straight pin.
4. flange Bidirectional pressure hard seal butterfly valve according to claim 1 is characterized in that, described butterfly plate outer circumference side edge face be the circular cone inclined-plane with movable valve seat inner side end and tapering identical.
5. flange Bidirectional pressure hard seal butterfly valve according to claim 1 is characterized in that, is respectively arranged with Upper shaft sleeve and Lower shaft sleeve between two ends and the valve body about the described valve rod, and described Upper shaft sleeve and Lower shaft sleeve all belong to self oiling bearing; Described valve rod is engaged on the valve body by single direction thrust ball bearing at afterbody.
6. flange Bidirectional pressure hard seal butterfly valve according to claim 1 is characterized in that, also is respectively arranged with filler and bottom on the valve body at two ends about the described valve rod; Described filler top is fixed with Gland, also is provided with sealing gasket between described bottom and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392863 CN202733009U (en) | 2012-08-09 | 2012-08-09 | Flange two-way pressure hard sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392863 CN202733009U (en) | 2012-08-09 | 2012-08-09 | Flange two-way pressure hard sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733009U true CN202733009U (en) | 2013-02-13 |
Family
ID=47658710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220392863 Expired - Fee Related CN202733009U (en) | 2012-08-09 | 2012-08-09 | Flange two-way pressure hard sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733009U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498943A (en) * | 2013-09-04 | 2014-01-08 | 北京艺创阀门制造有限公司 | Double-direction pressure rigidity seal butterfly valve of long support structure with rolling friction |
| CN103615550A (en) * | 2013-11-04 | 2014-03-05 | 乐清市阀门厂 | Marine center type multilayer hard sealing butterfly valve |
| CN105156698A (en) * | 2015-08-17 | 2015-12-16 | 王志强 | Super-hard both-way sealing butterfly valve |
| CN105299285A (en) * | 2015-11-11 | 2016-02-03 | 上海东宝阀门制造有限公司 | Three-eccentric bidirectional all-metal hard-seal butterfly valve |
| CN108980376A (en) * | 2018-08-07 | 2018-12-11 | 王中杰 | Double plate double-valve-seat bidirectional metals or the butterfly valve of nonmetallic sealing |
| CN115013546A (en) * | 2022-07-14 | 2022-09-06 | 良工阀门集团有限公司 | Two-way seal structure and butterfly valve |
| CN115264087A (en) * | 2022-09-28 | 2022-11-01 | 江苏大田阀门制造有限公司 | Three-eccentric butterfly valve capable of being sealed in two directions |
-
2012
- 2012-08-09 CN CN 201220392863 patent/CN202733009U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498943A (en) * | 2013-09-04 | 2014-01-08 | 北京艺创阀门制造有限公司 | Double-direction pressure rigidity seal butterfly valve of long support structure with rolling friction |
| CN103615550A (en) * | 2013-11-04 | 2014-03-05 | 乐清市阀门厂 | Marine center type multilayer hard sealing butterfly valve |
| CN105156698A (en) * | 2015-08-17 | 2015-12-16 | 王志强 | Super-hard both-way sealing butterfly valve |
| CN105299285A (en) * | 2015-11-11 | 2016-02-03 | 上海东宝阀门制造有限公司 | Three-eccentric bidirectional all-metal hard-seal butterfly valve |
| CN108980376A (en) * | 2018-08-07 | 2018-12-11 | 王中杰 | Double plate double-valve-seat bidirectional metals or the butterfly valve of nonmetallic sealing |
| CN115013546A (en) * | 2022-07-14 | 2022-09-06 | 良工阀门集团有限公司 | Two-way seal structure and butterfly valve |
| CN115013546B (en) * | 2022-07-14 | 2023-03-14 | 良工阀门集团有限公司 | Two-way seal structure and butterfly valve |
| CN115264087A (en) * | 2022-09-28 | 2022-11-01 | 江苏大田阀门制造有限公司 | Three-eccentric butterfly valve capable of being sealed in two directions |
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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: 20130213 Termination date: 20180809 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |