CN201891855U - Triple-eccentric bidirectional sealing metal-sealed butterfly valve - Google Patents
Triple-eccentric bidirectional sealing metal-sealed butterfly valve Download PDFInfo
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- CN201891855U CN201891855U CN2010205831808U CN201020583180U CN201891855U CN 201891855 U CN201891855 U CN 201891855U CN 2010205831808 U CN2010205831808 U CN 2010205831808U CN 201020583180 U CN201020583180 U CN 201020583180U CN 201891855 U CN201891855 U CN 201891855U
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- valve
- sealing
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- triple
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Abstract
The utility model relates to a triple-eccentric bidirectional sealing metal-sealed butterfly valve which comprises a valve body, a valve plate, a valve shaft, a valve plate seal ring and a valve seat, and is characterized in that the sealing surface of a sealing pair formed by the valve seat and the valve plate is an oblique conical surface; the conical surface axis of the valve plate and a channel axis of the valve body are in an angle eccentricity state; and the revolving central line of the valve plate and the channel central line of the valve body are also in an eccentric state. The beneficial effects are as follows: the triple-eccentric bidirectional sealing metal-sealed butterfly not only can realize bidirectional sealing, but also can ensure zero leakage, so as to prolong the service life, and the triple-eccentric bidirectional sealing metal-sealed butterfly valve is applicable to different work conditions. The elastic metal hard sealing without friction and interference realizes zero-leakage bidirectional sealing under the condition of the lowest torque.
Description
Technical field
The utility model belongs to butterfly valve, relates in particular to a kind of three eccentric two-way sealing metal seal butterfly valve.
Background technique
Common three eccentric metal seal butterfly valve belongs to hard seal butterfly valve.Though can satisfy the use of operating modes such as high temperature, high pressure, deep-etching, high wearing and tearing, in use can't realize two way sealed.Therefore, through regular meeting seepage takes place in pipeline.Not only reduce working life, also strengthened user cost.
The model utility content
The utility model is in order to overcome deficiency of the prior art, to provide a kind of and can realize two way sealed, can guaranteeing zero leakage, working life to prolong, be fit to the three eccentric two-way sealing metal seal butterfly valve of different operating modes again.
The utility model for achieving the above object, be achieved through the following technical solutions, a kind of three eccentric two-way sealing metal seal butterfly valve, comprise valve body, valve plate, valve shaft, valve plate seal ring and valve seat, it is characterized in that: the sealing pair that described valve seat and valve plate constitute, its sealing surface is the tilting conical surface, and described valve plate conical surface axis and valve channel axis are angle off-centre, and it is eccentric that valve plate gyration center line and valve channel center line also are.
The composite material sealing surface of inlaying on the matrix of described valve plate, the matrix surface of valve body is inlaid with metallic sealing section.
Beneficial effect: can realize two way sealed, can guarantee zero leakage, working life to prolong, be fit to different operating modes again.Do not have friction, glitch-free elastic metallic is sealed in firmly under the situation of minimum torque the zero leakage two way sealed is provided.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a valve plate open mode structural representation among Fig. 1;
Fig. 3 is the A-A sectional drawing of Fig. 2.
Among the figure: 1, valve body, 2, valve plate, 3, valve shaft 4, composite material sealing surface, 5, valve seat, 6, the conical surface, 7, valve plate gyration center line, 8, the valve channel center line, 9, metallic sealing section.
Embodiment
Below in conjunction with preferred embodiment, details are as follows to embodiment that foundation the utility model provides: see accompanying drawing for details, a kind of three eccentric two-way sealing metal seal butterfly valve, comprise valve body 1, valve plate 2, valve shaft 3, valve plate seal ring and valve seat 5, the sealing pair that described valve seat and valve plate constitute, its sealing surface is the tilting conical surface 6, and described valve plate conical surface axis and valve channel axis are angle off-centre, and valve plate gyration center line 7 also is eccentric with valve channel center line 8.Be inlaid with composite material sealing surface 4 on the matrix of described valve plate, the matrix surface of valve body is inlaid with metallic sealing section 9.
The composite material sealing surface promptly adopts multilayer corrosion resistant, resistant to elevated temperatures material and graphite to form through special compacting, and every layer all has independently seal action; Even one deck or local damage, remaining lamella still can guarantee the sealability of valve, thereby improved sealability effectively.The matrix of valve body is inlaid with the metallic sealing section that is applicable to different operating modes.No matter be valve plate or valve body, all can dismantle at any time, not only can improve the usability of valve greatly, and can improve the efficiency of loading and unloading.
Two way sealed:
When in the closed position, can realize two way sealed in order to make valve; Valve plate conical surface axis is become eccentric with the valve channel axis designs, promptly angle off-centre also is designed to certain off-centre with valve plate gyration center and valve channel center simultaneously; When these two off-centre are certain value, realized two way sealed.
Three eccentric structure butterfly valves are the tilting conical surface by the sealing surface of the sealing pair that valve seat and valve plate form, and valve plate is the face contact with contacting of valve seat, can guarantee that like this sealing positive pressure of each point on the valve plate is evenly distributed, and can guarantee sealing on 360 ° of circumference.
Working principle:
Forward sealing: when MEDIA FLOW during to forward as shown in Figure 4, because eccentric existence, valve plate can screw in valve seat, and realizes contact seal; And because the existence of the conical surface, during forward, the pressure that medium acts on the butterfly plate is big more, and butterfly plate then closes tight more more, thereby has guaranteed the reliability of sealing.
Oppositely sealing: when MEDIA FLOW to be shown in Figure 4 when reverse, form oppositely enough frictional force between sealing pair, and don't the increase moment of torsion; Adjusted second off-centre makes the valve plate unbalance moment be reduced to reverse media pressure valve plate is opened; Thereby realize oppositely sealing.
The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. three eccentric two-way sealing metal seal butterfly valve, comprise valve body, valve plate, valve shaft, valve plate seal ring and valve seat, it is characterized in that: the sealing pair that described valve seat and valve plate constitute, its sealing surface is the tilting conical surface, described valve plate conical surface axis and valve channel axis are angle off-centre, and it is eccentric that valve plate gyration center line and valve channel center line also are.
2. three eccentric two-way sealing metal seal butterfly valve according to claim 1 is characterized in that: the composite material sealing surface of inlaying on the matrix of described valve plate, the matrix surface of valve body is inlaid with metallic sealing section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205831808U CN201891855U (en) | 2010-10-29 | 2010-10-29 | Triple-eccentric bidirectional sealing metal-sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205831808U CN201891855U (en) | 2010-10-29 | 2010-10-29 | Triple-eccentric bidirectional sealing metal-sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891855U true CN201891855U (en) | 2011-07-06 |
Family
ID=44221332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205831808U Expired - Lifetime CN201891855U (en) | 2010-10-29 | 2010-10-29 | Triple-eccentric bidirectional sealing metal-sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104710A (en) * | 2013-02-20 | 2013-05-15 | 铁岭大沃阀门（集团）有限公司 | Crankshaft butterfly valve |
-
2010
- 2010-10-29 CN CN2010205831808U patent/CN201891855U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104710A (en) * | 2013-02-20 | 2013-05-15 | 铁岭大沃阀门（集团）有限公司 | Crankshaft butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN FSK FLOW CONTROL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: TIANJIN FLOW SECURITY VALVE CO., LTD. Effective date: 20131220 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300271 JINNAN, TIANJIN TO: 300000 JINNAN, TIANJIN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131220 Address after: 300000, No. 5, No. three, Keda Road, eight mile town, Jinnan District, Tianjin Patentee after: Tianjin FSK Flow Control Equipment Co., Ltd. Address before: 300271, No. 101, Vientiane Road (East), Grand Port Economic Development Zone (East District), Jinnan District, Tianjin Patentee before: Tianjin Flow Security Valve Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110706 |