CN201535363U - Tri-eccentric hard-sealed butterfly valve sealing pair structure - Google Patents
Tri-eccentric hard-sealed butterfly valve sealing pair structure Download PDFInfo
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- CN201535363U CN201535363U CN2009200402644U CN200920040264U CN201535363U CN 201535363 U CN201535363 U CN 201535363U CN 2009200402644 U CN2009200402644 U CN 2009200402644U CN 200920040264 U CN200920040264 U CN 200920040264U CN 201535363 U CN201535363 U CN 201535363U
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- butterfly plate
- valve body
- disc
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Abstract
The utility model relates to a tri-eccentric hard-sealed butterfly valve sealing pair structure, which can be widely applied to various industries, such as petroleum, chemicals and electric power, and belongs to the technical field of automatic control. The structure mainly comprises a valve body, a valve seat, a seal ring, a bolt, a disc, a valve rod, a press plate and a gasket, the gasket and the seal ring are pressed into the disc, the press plate and the disc are tightly pressed together by the bolt to form a disc assembly, which is mounted into the valve body, the valve rod is inserted into the valve body and the disc assembly, and pins are used for fixing the valve rod and the disc assembly. The structure is simple, compact and reasonable; the performance is stable and reliable, and particularly on petroleum, chemical and electric power transfer pipelines, the structure is safe, has low flow resistance and can resist high temperature and high pressure; meanwhile, the sealing parts can be conveniently repaired and replaced; and moreover, the structure can ensure that the valve can normally operate under the working conditions.
Description
Technical field
The utility model relates to a kind of three eccentric hard seal butterfly valve sealing pair structures, and it is industrial specifically extensively to be used in oil, chemical industry, electric power etc., belongs to the automatic control technology field.
Background technique
In prior art; eccentric hard seal butterfly valve sealing pair mainly is made up of valve body, butterfly plate assembly, seal assembly, valve seat, valve rod etc.; the valve body of this valve, combination butterfly plate, valve rod and valve seat machining accuracy are higher; owing to adopt hard sealing structure; particle or sharp-pointed object are not easy Sealing is destroyed as containing in the medium, as keep in repair and do not need whole valve dismounting just can be changed the butterfly plate Sealing.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby provide a kind of stable performance, reliable, particularly on the transfer line of oil, chemical industry, electric power, safety, low flow resistance, high temperature resistant, high pressure resistant, be convenient to the maintenance and the replacing of Sealing simultaneously, and can guarantee three eccentric hard seal butterfly valve sealing pair structures of valve normal operation under working condition.
The technological scheme that provides according to the utility model, three eccentric hard seal butterfly valve sealing pair structures comprise valve body, valve seat (hardfacing alloy on the valve body body), seal ring, bolt, butterfly plate, valve rod, pressing plate, pad, pad, seal ring are pressed into butterfly plate, pressing plate and butterfly plate compress with bolt forms the butterfly plate assembly parts, with this butterfly plate assembly parts valve body of packing into, and valve rod inserted valve body and butterfly plate assembly parts, with pin valve rod and butterfly plate assembly parts are fixed.
Compared with the prior art the utility model has the following advantages:
The utility model is simple, compact and reasonable for structure; Stable performance, reliable, particularly on the transfer line of oil, chemical industry, electric power, safety, low flow resistance, high temperature resistant, high pressure resistant are convenient to the maintenance and the replacing of Sealing simultaneously, and can guarantee valve normally operation under working condition.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model sealing position I enlarged diagram.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1, comprise valve body 1, valve seat 2, seal ring 3, bolt 4, butterfly plate 5, valve rod 6, pin 7, pressing plate 8, pad 9 etc.
The utility model valve seat 2 is directly to adopt the technique for overlaying hardfacing alloy on valve body 1, pad 8, seal ring 3 are pressed into butterfly plate 5, pressing plate 8 compresses with butterfly plate 5 usefulness bolts 4 forms the butterfly plate assembly parts, with this butterfly plate assembly parts valve body 1 of packing into, and, valve rod 6 and butterfly plate assembly parts are fixed with pin 7 with valve rod 6 insertion valve body 1 and butterfly plate assembly parties.
The utility model can keep the resistance to compression uniformity of its structure owing to adopt high temperature high-pressure resistant material under the rated working pressure of maximum, avoided other soft sealing butterfly valves to be not suitable for using under high temperature, high pressure conditions simultaneously.Sealing and link intensity are calculated through tight, and the valve internals are selected rational material for use by designing requirement, guarantee valve safety, reliable use under this working condition, guarantee that valve can be prevented fires, antistatic.
The utility model and the maximum difference of other common butterfly valve are, adopt eccentric project organization, its butterfly plate mounting center and rotating center are designed to certain throw of eccentric, when valve opening in a flash to full open the time, butterfly plate sealing surface and sealing surface of seat are in contactless state, butterfly plate circles round with valve rod and deflection enters sealing surface of seat and makes it sealing when closing, thus in the opening-closing process less, do not have the working life that wearing and tearing have improved valve.
The utility model adopts valve seat and the sealing of butterfly plate tilted conical surface, utilize the contact seal of butterfly plate eccentric cam principle, sealing opens and closes does not have friction, have when closing more and to close tightly more, sealability is reliable more, guarantees during unlatching that sealing surface disengages fully, guarantee that sealing surface does not damage and weares and teares, improve the sealability of valve, got rid of the shortcoming that other type butterfly valve can not fine sealing, guaranteed the sealing that sealing surface is intact.
Hardfacing alloy layer on the described sealing surface of seat, alloy-layer is an alloy material, has corrosion-resistantly, high temperature resistant, the characteristics of long service life have overcome valve under the high temperature user mode, the shortcoming that the thermal distortion late gate easily leaks.
The utlity model has the function of two way sealed, be not subjected to during installation MEDIA FLOW to restriction (ordinary priority recommend to use the direction that helps sealing to install), be not subjected to the influence of spatial position yet, can install in any direction.
Described butterfly plate seal ring adopts the stacked composition of tinsel, the middle graphite composite bed that adopts, and promptly stainless steel/enhancing graphite/stainless steel is formed, and external diameter becomes tilted conical surface and valve seat tilted conical surface to coincide through cutting.
Described butterfly plate mounting center and valve flowing channel center, rotating center are designed to certain throw of eccentric.The different size valve adopts different throw of eccentric according to design.
Claims (3)
1. eccentric hard seal butterfly valve sealing pair structure, comprise valve body (1), valve seat (2), seal ring (3), bolt (4), butterfly plate (5), valve rod (6), pressing plate (8), it is characterized in that: described pad (9), seal ring (3) are pressed into butterfly plate (5), pressing plate (8) compresses with bolt (4) with butterfly plate (5) forms the butterfly plate assembly parts, with this butterfly plate assembly parts valve body (1) of packing into, and, valve rod (6) and butterfly plate assembly parts are fixed with pin (7) with valve rod (6) insertion valve body (1) and butterfly plate assembly parts.
2. according to claim 1 three eccentric hard seal butterfly valve sealing pair structures is characterized in that described sealing surface of seat hardfacing alloy layer.
3. according to claim 1 three eccentric hard seal butterfly valve sealing pair structures is characterized in that described seal ring (3) adopts the stacked composition of tinsel, the middle graphite composite bed that adopts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200402644U CN201535363U (en) | 2009-04-16 | 2009-04-16 | Tri-eccentric hard-sealed butterfly valve sealing pair structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200402644U CN201535363U (en) | 2009-04-16 | 2009-04-16 | Tri-eccentric hard-sealed butterfly valve sealing pair structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535363U true CN201535363U (en) | 2010-07-28 |
Family
ID=42535142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200402644U Expired - Fee Related CN201535363U (en) | 2009-04-16 | 2009-04-16 | Tri-eccentric hard-sealed butterfly valve sealing pair structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535363U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279341A (en) * | 2013-07-04 | 2015-01-14 | 浙江北泽阀门制造有限公司 | Triple-eccentric two-way hard sealing butterfly valve |
| CN110608290A (en) * | 2019-10-23 | 2019-12-24 | 江苏神通阀门股份有限公司 | Three-eccentric metal seal butterfly valve structure with online replaceable seal pair |
| CN112879572A (en) * | 2021-01-28 | 2021-06-01 | 浙江中信阀门有限公司 | Compact upper assembling type detachable online maintenance ultralow-temperature butterfly valve |
-
2009
- 2009-04-16 CN CN2009200402644U patent/CN201535363U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279341A (en) * | 2013-07-04 | 2015-01-14 | 浙江北泽阀门制造有限公司 | Triple-eccentric two-way hard sealing butterfly valve |
| CN110608290A (en) * | 2019-10-23 | 2019-12-24 | 江苏神通阀门股份有限公司 | Three-eccentric metal seal butterfly valve structure with online replaceable seal pair |
| CN112879572A (en) * | 2021-01-28 | 2021-06-01 | 浙江中信阀门有限公司 | Compact upper assembling type detachable online maintenance ultralow-temperature butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XV VALVE (JIANGSU) CO., LTD. Free format text: FORMER NAME: JIANGSU SUFA HIGH-PRESSURE VALVE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 214112 Jiangsu New District of Wuxi, national hi tech Industrial Development Zone, Mei Tin Village Industrial Park Road No. 236 (A-54-7 block) Patentee after: Tin valve (Jiangsu) Co., Ltd. Address before: 214112 Jiangsu New District of Wuxi, national hi tech Industrial Development Zone, Mei Tin Village Industrial Park Road No. 236 (A-54-7 block) Patentee before: Jiangsu Sufa High-pressure Valve Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20120416 |