CN2916288Y - 3D eccentric two-way metallic hard sealing butterfly valve - Google Patents
3D eccentric two-way metallic hard sealing butterfly valve Download PDFInfo
- Publication number
- CN2916288Y CN2916288Y CN 200620090992 CN200620090992U CN2916288Y CN 2916288 Y CN2916288 Y CN 2916288Y CN 200620090992 CN200620090992 CN 200620090992 CN 200620090992 U CN200620090992 U CN 200620090992U CN 2916288 Y CN2916288 Y CN 2916288Y
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- Prior art keywords
- valve
- eccentric
- butterfly plate
- sealing
- butterfly
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- Expired - Fee Related
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Abstract
The utility model belongs to valve technology field, in particular to a three-dimension eccentric two-way metal hard sealing butterfly valve, which comprises a valve body, a valve base, a valve rod, a bracket, a transmission device, a sealing stuff and a bushing and is characterized in that: inside the valve body, a two-eccentric tilting ellipse butterfly plate is arranged on the valve rod via a cylinder pin. Between the butterfly plate and the valve base is provided with an ellipse-shaped section sealing ring. The eccentric tilting ellipse butterfly plate, the ellipse section sealing ring and the valve base form the radial dynamic balanced sealing structure. The ellipse-shaped section sealing ring and the valve base metal sealing surface form sealing pair and the pressure plate at the outer side of the butterfly plate presses the sealing ring and the eccentric tilting ellipse-shaped butterfly plate and the valve rod are assumed as double-eccentric structure. The utility model can reach the dynamic balance sealing effect and reliably realizes two-way sealing zero leakage at the inlet and outlet of the butterfly valve. The opening of the butterfly plate is small in resistance and will not deform under the actual working condition, causing no impact stress, elastic anneal or crack phenomenon, thus, the leakage problem could be completely solved and service life could be prolonged.
Description
Technical field
The utility model belongs to valve technology field, particularly a kind of three-dimensional eccentric two-way metal hard-sealing butterfly valve.
Background technique
Metallic sealing butterfly valve extensively applies to be used for doing closed circuit sealing, throttling arrangement or controlling device in the industrial processes such as chemical industry, oil, metallurgy, mine, electric power, the energy, building, environmental protection, and there is following drawback in traditional butterfly valve seal structure:
1) there be high temperature annealing, the high pressure plastic deformation after punching press stress deformation, the heat treatment typing in sealing configuration elements such as traditional S type, U type, half O type, lip type, the seal leakage phenomenon that factor such as follow the string causes.
2) all can realize the working condition that seals in the time of can not being applied to that requirements for pipes is two-way presses.
3) traditional metal hard-sealing butterfly valve sealing surface is interfered seriously, and the life-span is short, the keying operational torque is big, and application area is restricted.
Summary of the invention
It is a kind of simple in structure that the purpose of this utility model provides, long service life, and operation is easily reliable, can realize the three-dimensional eccentric two-way metal hard-sealing butterfly valve of two-way high-performance sealing.
The purpose of this utility model realizes by following technical proposals.
According to three-dimensional eccentric two-way metal hard-sealing butterfly valve of the present utility model, comprise valve body, valve seat, valve rod, support, transmission device, stuffing box packing, lining, it is characterized in that having in the described valve body the oval butterfly plate of oblique cone of an off-centre to be fixed on the valve rod by straight pin, be provided with the seal ring of elliptic cross-section between oval butterfly plate of this eccentric oblique cone and the valve seat, the oval butterfly plate of eccentric oblique cone, the seal ring of elliptic cross-section and valve seat constitute radially dynamic balancing sealing mechanism, elliptic cross-section seal ring and valve seat metallic sealing section are formed sealing pair, the oval butterfly plate of the eccentric oblique cone outside is provided with pressing plate, socket head screw couples together butterfly plate and pressing plate and pushes down the elliptic cross-section seal ring, the valve body upper inner is provided with lining, the valve body lower end inboard is provided with down lining, be provided with the stuffing box packing case on the last lining, be provided with Gland above the stuffing box packing case.
Between oval butterfly plate of described eccentric oblique cone and the valve rod is two eccentric structures, between valve body center line and the valve rod axis apart from radial disbalance H, axial eccentric e and satisfy following relation: butterfly plate seal ring left side outer rim is to the distance h of valve body center line
1To the distance h between the valve rod axis, butterfly plate seal ring left side outer rim is to the distance h of valve rod axis less than butterfly plate seal ring right side outer rim
2Greater than butterfly plate seal ring right side outer rim to the distance h between the valve rod axis.
Because the utility model has adopted an oval sealing configuration of two eccentric special oblique cones, thereby reaches radially dynamically balanced sealing effect.Realized butterfly valve inlet-outlet bidirectional sealing zero leakage reliably, also realized the fricton-tight friction between the butterfly plate seal ring and sealing surface of seat in opening-closing process simultaneously, do not had card and squeeze, made pressure angle on the sealing surface greater than friction angle.Owing to adopted radially dynamic balancing design, make the butterfly plate opening resistance extremely low, the butterfly plate sealing surface can be finished pointwise contact and pointwise disengaging moment fast along 360 ° of circumference each points in the opening-closing process.Opening encapsulation promptly separates, and quick and precisely realizes closing the effect that contact promptly seals.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is Figure 1A-A sectional view
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
As Fig. 1, shown in Figure 2, three-dimensional eccentric two-way metal hard-sealing butterfly valve of the present utility model, comprise valve body 1, valve seat 16, valve rod 10, support 7, transmission device 8, stuffing box packing 11, lining, it is characterized in that having in the described valve body the oval butterfly plate 5 of oblique cone of an off-centre to be fixed on the valve rod 10 by straight pin 4, be provided with the seal ring 13 of elliptic cross-section between oval butterfly plate 5 of this eccentric oblique cone and the valve seat 16, the oval butterfly plate 5 of eccentric oblique cone, the seal ring 13 of elliptic cross-section and valve seat 16 constitute radially dynamic balancing sealing mechanism, elliptic cross-section seal ring 13 and valve seat 16 metallic sealing sections are formed sealing pair, the oval butterfly plate of eccentric oblique cone 5 outsides are provided with pressing plate, socket head screw 14 couples together butterfly plate 5 and pressing plate 15 and pushes down elliptic cross-section seal ring 13, the valve body upper inner is provided with lining 12, the valve body lower end inboard is provided with down lining 3, be provided with stuffing box packing case 11 on the last lining 12, be provided with Gland 9 above the stuffing box packing case 11.Label 2 is a lower end cap among Fig. 1.
As shown in Figure 3, be two eccentric structures between oval butterfly plate of described eccentric oblique cone and the valve rod, between valve body center line and the valve rod axis apart from radial disbalance H, axial eccentric e and satisfy following relation: butterfly plate seal ring left side outer rim is to the distance h of valve body center line
1To the distance h between the valve rod axis, butterfly plate seal ring left side outer rim is to the distance h of valve rod axis less than butterfly plate seal ring right side outer rim
2Greater than butterfly plate seal ring right side outer rim to the distance h between the valve rod axis.Simultaneously, be arranged off-centre between cone center line and the cone inclined-plane, thereby form three-dimensional eccentric.
Because it is multi-sealed that the sealing surface of three-dimensional eccentric two-way metal hard-sealing butterfly valve of the present utility model adopts,, form sealing pair with the valve seat metallic sealing section through high-precision processing ovalisation cross section sealing ring.This structure does not produce plastic deformation under the high pressure operating mode, under high temperature or worst cold case, there are not punching press stress, elasticity annealing or sting ring embrittlement phenomenon, thoroughly solved the drawback that traditional butterfly valve seal unreasonable structure causes leakage, improved the valve seal reliability greatly, thereby improved the working life of valve, can replace heaviness, gate valve that valency is high, stop valve, ball valve, throttle valve etc. fully.
Claims (2)
1. three-dimensional eccentric two-way metal hard-sealing butterfly valve, comprise valve body, valve seat, valve rod, support, transmission device, stuffing box packing, lining, it is characterized in that having in the described valve body the oval butterfly plate of oblique cone of an off-centre to be fixed on the valve rod by straight pin, be provided with the seal ring of oblique cone elliptic cross-section between oval butterfly plate of this eccentric oblique cone and the valve seat, the oval butterfly plate of eccentric oblique cone, the seal ring of elliptic cross-section and valve seat constitute radially dynamic balancing sealing mechanism, elliptic cross-section seal ring and valve seat metallic sealing section are formed sealing pair, the oval butterfly plate of the eccentric oblique cone outside is provided with pressing plate, socket head screw couples together butterfly plate and pressing plate and pushes down the elliptic cross-section seal ring, the valve body upper inner is provided with lining, the valve body lower end inboard is provided with down lining, be provided with the stuffing box packing case on the last lining, be provided with Gland above the stuffing box packing case.
2. three-dimensional eccentric two-way metal hard-sealing butterfly valve according to claim 1, it is characterized in that between oval butterfly plate of described eccentric oblique cone and the valve rod it being two eccentric structures, between valve body center line and the valve rod axis apart from radial disbalance H, axial eccentric e, and satisfy following relation: butterfly plate seal ring left side outer rim is to the distance h of valve body center line
1To the distance h between the valve rod axis, butterfly plate seal ring left side outer rim is to the distance h of valve rod axis less than butterfly plate seal ring right side outer rim
2Greater than butterfly plate seal ring right side outer rim to the distance h between the valve rod axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090992 CN2916288Y (en) | 2006-05-26 | 2006-05-26 | 3D eccentric two-way metallic hard sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090992 CN2916288Y (en) | 2006-05-26 | 2006-05-26 | 3D eccentric two-way metallic hard sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2916288Y true CN2916288Y (en) | 2007-06-27 |
Family
ID=38187200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620090992 Expired - Fee Related CN2916288Y (en) | 2006-05-26 | 2006-05-26 | 3D eccentric two-way metallic hard sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2916288Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725718B (en) * | 2008-10-27 | 2012-08-01 | 明珠阀门集团有限公司 | Upper-detachable breakdown structure of three-eccentric-butterfly-valve |
| CN104197028A (en) * | 2014-09-02 | 2014-12-10 | 宣达实业集团有限公司 | Adjustable all-metal bidirectional hard seal type eccentric butterfly valve |
| CN104534108A (en) * | 2014-12-10 | 2015-04-22 | 浙江华尔士自控仪表阀门有限公司 | Pneumatic flange type triple-biased butterfly valve |
-
2006
- 2006-05-26 CN CN 200620090992 patent/CN2916288Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725718B (en) * | 2008-10-27 | 2012-08-01 | 明珠阀门集团有限公司 | Upper-detachable breakdown structure of three-eccentric-butterfly-valve |
| CN104197028A (en) * | 2014-09-02 | 2014-12-10 | 宣达实业集团有限公司 | Adjustable all-metal bidirectional hard seal type eccentric butterfly valve |
| CN104534108A (en) * | 2014-12-10 | 2015-04-22 | 浙江华尔士自控仪表阀门有限公司 | Pneumatic flange type triple-biased butterfly valve |
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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: 20070627 Termination date: 20100526 |