CN202017775U - Triple eccentric metal seal butterfly valve - Google Patents
Triple eccentric metal seal butterfly valve Download PDFInfo
- Publication number
- CN202017775U CN202017775U CN2011201439427U CN201120143942U CN202017775U CN 202017775 U CN202017775 U CN 202017775U CN 2011201439427 U CN2011201439427 U CN 2011201439427U CN 201120143942 U CN201120143942 U CN 201120143942U CN 202017775 U CN202017775 U CN 202017775U
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- China
- Prior art keywords
- ring
- wedge
- plate
- butterfly
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a triple eccentric metal seal butterfly valve, which comprises a valve body, a butterfly plate, a metal seal ring and an adjustment pressing plate, wherein the butterfly plate is arranged in the valve body; the metal seal ring is arranged on a seal surface of the butterfly plate; the adjustment pressing plate is buckled on the outer ring surface of the metal seal ring; the adjustment pressing plate is connected with the butterfly plate via a bolt; the outer plate surface of the butterfly plate at the inner ring opening of the metal seal ring is provided with a wedge-shaped ring groove of which the cross section has a wedge shape; a wedge-shaped metal ring of which the cross section has a wedge shape is arranged in the wedge-shaped ring groove; the annular adjustment pressing plate is provided with a plurality of set screws corresponding to the wedge-shaped metal ring; and nail tips of the set screws are contacted with the ring surface of the wedge-shaped metal ring. The triple eccentric metal seal butterfly valve has the advantages that: the specific sealing pressure can be adjusted arbitrarily without gasket adjustment under the condition of not dismounting the adjustment pressing plate and the metal sealing ring; the axial direction can be adjusted, and any direction of the circumference of the butterfly plate can be adjusted.
Description
Technical field
The utility model relates to butterfly valve, especially relates to the three eccentric metal seal butterfly valve.
Background technique
The sealing effect of three eccentric metal seal butterfly valve is structurally comparatively reliable.But because the second eccentric and existence of cone angle partially, the radial seal compensation is apparent and almost nil in axial sealing compensation amount, adjusts so the specific pressure of axial seal has only by pad.Because the error of machining when regulating by the thickness of selecting pad, is difficult to control to the optimum state.So valve is when carrying out the backpressure test, the probability of axial leakage is bigger.In case occur leaking, the adjusting pressing plate of just need dismantling is taken away metal o-ring, take out pad and carry out secondary or repeatedly adjustment, this was both time-consuming, labor intensity is big, and probalility of success is again little.
Summary of the invention
The utility model purpose is to provide a kind of axial seal specific pressure Compensation Regulation simple and reliable three eccentric metal seal butterfly valve.
For achieving the above object, the utility model can be taked following technical proposals:
Three eccentric metal seal butterfly valve described in the utility model, it comprises valve body, is arranged on the butterfly plate in the described valve body and is arranged on metallic packing ring on the described butterfly plate sealing surface, and withhold the adjusting pressing plate on described metallic packing ring outer ring surface; Described adjusting pressing plate is connected with butterfly plate by bolt; Be positioned at metallic packing ring collar extension position in described butterfly plate outer plate surface and offer the wedge shape annular groove that cross section is a wedge shape, being provided with cross section in described wedge shape annular groove is the wedge metal ring of wedge shape; Be provided with a plurality of Cock screws corresponding to described wedge metal ring position place on the adjusting pressing plate, the nail point of described Cock screw contacts with the anchor ring of wedge metal ring.
The bottom land width of described wedge shape annular groove is less than the inner ring surface width of described wedge metal ring.
The utility model advantage is to need not to adjust pad and promptly can adjust seal pressure arbitrarily, and not only to axially adjusting, also can adjust arbitrary orientation of butterfly plate circumference not dismantling under the situation of regulating pressing plate and metal o-ring.During adjustment, screw in the Cock screw on the described adjusting pressing plate, the wedge metal hoop moves down, simultaneously metal o-ring is outwards passed, the contact stress of the sealing surface of the sealing surface of metal o-ring and valve body is increased, thereby make the axial seal specific pressure of three eccentric metal seal butterfly valve be compensated.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the I portion structure for amplifying schematic representation of Fig. 1.
Embodiment
As shown in Figure 1, 2, three eccentric metal seal butterfly valve described in the utility model, it comprises valve body 1, is arranged on the butterfly plate 2 in the described valve body 1, with the metallic packing ring 3 that is arranged on described butterfly plate 2 sealing surfaces, and withhold adjusting pressing plate 4 on described metallic packing ring 3 outer ring surfaces; Described adjusting pressing plate 4 is connected with butterfly plate 2 by bolt 5; Be positioned at metallic packing ring 3 collar extension positions in described butterfly plate 2 outer plate surface and offer the wedge shape annular groove that cross section is a wedge shape, being provided with cross section in described wedge shape annular groove is the wedge metal ring 6 of wedge shape, and the bottom land width of described wedge shape annular groove is less than the inner ring surface width of described wedge metal ring 6; Be provided with a plurality of Cock screws 7 corresponding to described wedge metal ring 6 positions on adjusting pressing plate 4, the nail point of described Cock screw 7 contacts with the anchor ring of wedge metal ring 6.
Claims (2)
1. three eccentric metal seal butterfly valve, it comprises valve body (1), be arranged on the butterfly plate (2) in the described valve body (1) and be arranged on metallic packing ring (3) on described butterfly plate (2) sealing surface, and withhold the adjusting pressing plate (4) on described metallic packing ring (3) outer ring surface; Described adjusting pressing plate (4) is connected with butterfly plate (2) by bolt (5); It is characterized in that: be positioned at metallic packing ring (3) collar extension position in described butterfly plate (2) outer plate surface and offer the wedge shape annular groove that cross section is a wedge shape, being provided with cross section in described wedge shape annular groove is the wedge metal ring (6) of wedge shape; Upward be provided with a plurality of Cock screws (7) corresponding to described wedge metal ring (6) position at adjusting pressing plate (4), the nail point of described Cock screw (7) contacts with the anchor ring of wedge metal ring (6).
2. three eccentric metal seal butterfly valve according to claim 1 is characterized in that: the bottom land width of described wedge shape annular groove is less than the inner ring surface width of described wedge metal ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201439427U CN202017775U (en) | 2011-05-09 | 2011-05-09 | Triple eccentric metal seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201439427U CN202017775U (en) | 2011-05-09 | 2011-05-09 | Triple eccentric metal seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202017775U true CN202017775U (en) | 2011-10-26 |
Family
ID=44811445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201439427U Expired - Fee Related CN202017775U (en) | 2011-05-09 | 2011-05-09 | Triple eccentric metal seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202017775U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470790A (en) * | 2013-09-12 | 2013-12-25 | 无锡市亚迪流体控制技术有限公司 | Three eccentric metal seal butterfly valve |
| CN103629374A (en) * | 2013-12-05 | 2014-03-12 | 河南煜达阀门制造有限公司 | Butterfly plate for three-eccentric center butterfly valve |
-
2011
- 2011-05-09 CN CN2011201439427U patent/CN202017775U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470790A (en) * | 2013-09-12 | 2013-12-25 | 无锡市亚迪流体控制技术有限公司 | Three eccentric metal seal butterfly valve |
| CN103470790B (en) * | 2013-09-12 | 2015-08-26 | 无锡市亚迪流体控制技术有限公司 | Three eccentric metal seal butterfly valve |
| CN103629374A (en) * | 2013-12-05 | 2014-03-12 | 河南煜达阀门制造有限公司 | Butterfly plate for three-eccentric center butterfly valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20170509 |