CN201273375Y - Three-eccentric metal hard seal butterfly valve - Google Patents
Three-eccentric metal hard seal butterfly valve Download PDFInfo
- Publication number
- CN201273375Y CN201273375Y CNU2008201660704U CN200820166070U CN201273375Y CN 201273375 Y CN201273375 Y CN 201273375Y CN U2008201660704 U CNU2008201660704 U CN U2008201660704U CN 200820166070 U CN200820166070 U CN 200820166070U CN 201273375 Y CN201273375 Y CN 201273375Y
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- valve
- flap
- sealing
- sealing ring
- seal ring
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Abstract
A triple eccentric metal seal butterfly valve mainly comprises a driving portion and a body, and is characterized in that the body mainly comprises a valve body, valve rods, a flap and a sealing structure, a stellite alloying layer is built up by welding on a valve-seat seal surface of the valve body, an engaged sealing ring is made of integral bi-phase stainless steel material, the valve-seat seal surface and the sealing ring on the flap are formed into a sealing pair, the flap is mainly composed of a flap body, a clamp plate and the sealing ring, the clamp plate is tightly pressed on the flap body of the sealing ring, the sealing formed between the sealing ring and the flap body is sealed by a spring energy-accumulating type sealing ring which is arranged under the sealing ring, centers of the flap body and the valve body are provided with the valve rods, a guide bush is further arranged between the valve rod and the valve body, and the flap is capable of rotating 90 degrees in the valve body driven by the valve rod. The triple eccentric metal seal butterfly valve has the characteristics of rational structure, compactness, convenient utilization, flexibility, small valve operating force moment, long service life, freeness of maintenance, wide use range and good reliability and the like.
Description
Technical field
The utility model relates to a kind of metal hard-sealing structure of three eccentric butterfly valve, belongs to valve technology field.
Background technique
In the prior art, three eccentric hard seal butterfly valves, what its employed seal ring adopted is multilayer soft or hard lamination form, it has following shortcoming: 1, when valve during in opening state medium its sealing surface formed the front wash away, after soft seal band in the tinsel interlayer was washed away, damaging easily directly influenced sealability; 2, frequent keying can cause the soft seal part to be damaged earlier, seal failure, and the life-span is not long; 3, soft seal easy deformation under the ultralow temperature.So the soft interlayer in the folded formula seal ring of multilayer soft or hard can not be used for ultralow temperature (196 ℃) and the higher occasion of pressure (pressure reduction), can not adapt to the switching occasion of frequent keying.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and provide a kind of three eccentric butterfly valve that can make in very big temperature range (196 ℃ ~+450 ℃) and very high pressure range, especially adapt to the three eccentric metal hard sealed butterfly damper that ultralow temperature (196 ℃) and the frequent switching occasion that opens and closes are used.
It mainly comprises drive part and body two-part; Body portion is made of valve body, valve rod, flap and sealing configuration; The seal ring that matches on the built-up welding officials Tai Lai alloy-layer on the sealing surface of seat of described valve body, it and flap forms sealing pair.
Described flap is mainly combined by flap body, pressing plate and seal ring; Seal ring is made by whole two phase stainless steel, and pressing plate compresses seal ring on the flap body, the spring energy-storage RunddichtringO sealing of the sealing between seal ring and the flap body below seal ring.
Also be provided with guide bush between described valve rod and the valve body, and flap under driving, is done valve rod 90 degree rotation motions in valve body; The bottom of valve rod is provided with the plane bearing of oil-free lubrication type, is used for reducing the frictional force when rotating.
Metal hard-sealing structure described in the utility model makes valve can be operated in very big temperature range (196 ℃ ~+450 ℃) and very high pressure range, especially is adapted to the frequent occasion that opens and closes; It has rational in infrastructure, compact, and is easy to use, flexible, and valve operation moment is little, and the life-span is long, avoids safeguarding that using scope is wide, characteristics such as good reliability.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a body portion structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail: shown in the accompanying drawing 1, the utility model mainly comprises drive part A and body portion B.Shown in the accompanying drawing 2, described body portion B is made of valve body 1, valve rod 2, flap and sealing configuration.The seal ring 4 that matches on the built-up welding officials Tai Lai alloy-layer 3 on the sealing surface of seat of described valve body 1, it and flap forms sealing pairs.
Described flap is mainly combined by flap body 5, pressing plate 6 and seal ring 4; Seal ring 4 is made by whole two phase stainless steel, and pressing plate 6 compresses seal ring 4 on flap body 5, the spring energy-storage RunddichtringO sealing of the sealing between seal ring 4 and the flap body 5 below seal ring.
Also be provided with guide bush 7 between described valve rod 2 and the valve body 1, and flap under driving, is done valve rod 2 90 degree rotation motions in valve body 1; The bottom of valve rod 2 is provided with the plane bearing 8 of oil-free lubrication type, is used for reducing the frictional force when rotating.
Metal hard-sealing described in the utility model can make the performance of valve itself can not change because of the acute variation of medium temperature and pressure, guarantee that valve has very big temperature (196 ℃ ~+450 ℃) and very high pressure Applicable scope, can adapt to various bad working environments requirements.Be adapted to the frequent occasion that opens and closes especially.
The utility model utilizes the design of three eccentric center principles, the metal hard-sealing structure: valve seat adopts built-up welding Si Tailai alloy, seal ring to adopt whole two-phase stainless steel.Guarantee that butterfly valve does not have friction between seal ring and the valve seat in the opening and closing process, make valve operation moment little, the life-span is long, avoids maintenance.
Claims (3)
1, a kind of three eccentric metal hard sealed butterfly damper, it mainly comprises drive part and body two-part; Body portion is made of valve body, valve rod, flap and sealing configuration; It is characterized in that built-up welding officials Tai Lai alloy-layer (3) on the sealing surface of seat of described valve body (1), the seal ring (4) that matches on it and the flap forms sealing pair.
2, three eccentric metal hard sealed butterfly damper according to claim 1, it is characterized in that described flap is mainly combined by flap body (5), pressing plate (6) and seal ring (4), pressing plate (6) compresses seal ring (4) on flap body (5), the spring energy-storage RunddichtringO sealing of the sealing between seal ring (4) and the flap body (5) below seal ring (4).
3, three eccentric metal hard sealed butterfly damper according to claim 2, the center that it is characterized in that described flap body (5) and valve body (1) is provided with valve rod (2), also be provided with guide bush (7) between valve rod (2) and the valve body (1), and flap can under driving, be done valve rod (2) 90 degree rotation motions in valve body (1); The bottom of valve rod (2) is provided with the plane bearing (8) of oil-free lubrication type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201660704U CN201273375Y (en) | 2008-10-13 | 2008-10-13 | Three-eccentric metal hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201660704U CN201273375Y (en) | 2008-10-13 | 2008-10-13 | Three-eccentric metal hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273375Y true CN201273375Y (en) | 2009-07-15 |
Family
ID=40883722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201660704U Expired - Lifetime CN201273375Y (en) | 2008-10-13 | 2008-10-13 | Three-eccentric metal hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201273375Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927297A (en) * | 2012-11-15 | 2013-02-13 | 无锡智能自控工程股份有限公司 | Anti-drop structure for regulating valve bushing |
-
2008
- 2008-10-13 CN CNU2008201660704U patent/CN201273375Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927297A (en) * | 2012-11-15 | 2013-02-13 | 无锡智能自控工程股份有限公司 | Anti-drop structure for regulating valve bushing |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090715 |