CN102313030A - Two-way sealing butterfly valve - Google Patents
Two-way sealing butterfly valve Download PDFInfo
- Publication number
- CN102313030A CN102313030A CN2010102191274A CN201010219127A CN102313030A CN 102313030 A CN102313030 A CN 102313030A CN 2010102191274 A CN2010102191274 A CN 2010102191274A CN 201010219127 A CN201010219127 A CN 201010219127A CN 102313030 A CN102313030 A CN 102313030A
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- CN
- China
- Prior art keywords
- seal ring
- butterfly
- plate
- packing holder
- butterfly plate
- 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.)
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Abstract
The invention provides a two-way sealing butterfly valve, which comprises a valve body, a valve seat, a seal ring, a butterfly plate and a pressing plate, wherein the valve seat is fixed in the valve body; the seal ring and the valve seat form a seal pair; a seal ring seat is also arranged between the seal ring and the butterfly plate; the seal ring seat is provided with a ring of counter bores at one end and is connected onto the butterfly plate through a screw; a spring is also arranged between the seal ring seat and the butterfly plate and is sleeved on the screw; an O-shaped ring is used for sealing between the side face of the seal ring seat and the butterfly plate; a gap is formed between the seal ring seat and the plane of the butterfly plate; the seal ring is fixed on the seal ring seat through the pressing plate; a gasket is arranged between the seal ring and the seal ring seat; a gasket is also arranged between the pressing plate and the seal ring seat; a plurality of pressure balance holes are also formed on the pressing plate at the positions corresponding to the cavity of the butterfly plate; and a disc spring is also arranged between the screw and the counter bores of the seal ring seat. The butterfly valve has the beneficial effects that: a floating seal ring structure is adopted; the seal ring can displace in the pressed direction to press the valve seat; and reverse sealing is reliable.
Description
Technical field
The present invention relates to a kind of valving, particularly relate to a kind of bidirectional sealed butterfly valve.
Background technique
The hard seal butterfly valve that generally uses on the metallurgy industry gas pipe line at present; Its metal o-ring is fixed on the butterfly plate through pressing plate, and the valve seat formation sealing pair with on the valve body generally can only bear positive pressure; The reverse pressure-bearing ability; Oppositely hold to requiring in case system's medium has, then be prone to cause the leakage of valve, influence environment and personnel's safety.
Summary of the invention
Can only bear positive pressure in order to overcome existing hard seal butterfly valve, reverse pressure-bearing ability, easy deficiency of leaking, the present invention provides a kind of bidirectional sealed butterfly valve.
The technical solution adopted for the present invention to solve the technical problems is a kind of bidirectional sealed butterfly valve, comprises valve body, valve seat, seal ring, butterfly plate, pressing plate, and valve seat is fixed in the valve body; Seal ring and valve seat form sealing pair, and a packing holder also is housed between seal ring and the butterfly plate, and packing holder one end has a circle counterbore; On butterfly plate, spring is housed also between packing holder and butterfly plate through screw attachment, spring housing is on screw; Pass through seal with O ring between packing holder side and the butterfly plate; Have a space between packing holder and the butterfly plate plane, seal ring is fixed on the packing holder through pressing plate, between seal ring and the packing holder pad is housed; Pad also is housed between pressing plate and the packing holder, on the position of the cavity that forms with butterfly plate on the pressing plate, also has several pressure compensation openings.
The dish spring also is housed between the counterbore of screw and packing holder.
The invention has the beneficial effects as follows and adopt floating type ring structure, seal ring can produce displacement along with the pressurized direction, presses to valve seat, and reverse sealing is reliable.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the tectonic maps of present embodiment
Among the figure: 1. valve body; 2. valve seat; 3. pressing plate; 4. seal ring; 5. pad; 6. packing holder; 7.0 shape circle; 8. spring; 9. screw; 10. dish spring; 11. pressure compensation opening; 12. butterfly plate.
Embodiment
As shown in Figure 1, a kind of bidirectional sealed butterfly valve comprises valve body 1, valve seat 2, seal ring 4, butterfly plate 12, pressing plate 3; Valve seat 2 is fixed in the valve body 1, and seal ring 4 forms sealing pair with valve seat 2, and a packing holder 6 also is housed between seal ring 4 and the butterfly plate 12; Packing holder 6 one ends have a circle counterbore, are connected on the butterfly plate 12 through screw 9, between packing holder 6 and butterfly plate 12, spring 8 are housed also; Spring 8 is enclosed within on the screw 9, through 7 sealings of O shape circle, has a space between packing holder 6 and butterfly plate 12 planes between packing holder 6 sides and the butterfly plate 12; Seal ring 4 is fixed on the packing holder 6 through pressing plate 3; Between seal ring 4 and the packing holder 6 pad 5 is housed, between pressing plate 3 and the packing holder 6 pad 5 is housed also, on the position of the cavity that forms with butterfly plate 12 on the pressing plate 3, also have several pressure compensation openings 11.Dish spring 10 also is housed between the counterbore of screw 9 and packing holder 6.
When reverse pressurized, the power that its initial sealing specific pressure leans on spring 8 to produce guarantees, along with the rising of pressure medium; Medium gets in the cavity of pressing plate 3 and butterfly plate 12 from the pressure compensation opening 11 on the pressing plate 3; Get in the space between packing holder 6 and the butterfly plate 12, under the effect of pressure medium, packing holder 6 drives seal ring 4 and does small moving axially; Press to valve seat 2, realize reverse reliably sealing.
Claims (2)
1. a bidirectional sealed butterfly valve comprises valve body, valve seat, seal ring, butterfly plate, pressing plate, and valve seat is fixed in the valve body; Seal ring and valve seat form sealing pair, it is characterized in that: a packing holder also is housed between described seal ring and the butterfly plate, and packing holder one end has a circle counterbore; On butterfly plate, spring is housed also between packing holder and butterfly plate through screw attachment, spring housing is on screw; Pass through seal with O ring between packing holder side and the butterfly plate; Have a space between packing holder and the butterfly plate plane, described seal ring is fixed on the packing holder through pressing plate, between seal ring and the packing holder pad is housed; Pad also is housed between pressing plate and the packing holder, on the position of the cavity that forms with butterfly plate on the pressing plate, also has several pressure compensation openings.
2. a kind of bidirectional sealed butterfly valve according to claim 1 is characterized in that: the butterfly spring also is housed between the counterbore of described screw and packing holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102191274A CN102313030A (en) | 2010-06-29 | 2010-06-29 | Two-way sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102191274A CN102313030A (en) | 2010-06-29 | 2010-06-29 | Two-way sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102313030A true CN102313030A (en) | 2012-01-11 |
Family
ID=45426466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102191274A Pending CN102313030A (en) | 2010-06-29 | 2010-06-29 | Two-way sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102313030A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0663549B1 (en) * | 1993-12-21 | 1998-12-30 | ADAMS GmbH & Co. ARMATUREN KG | Metallic seal for butterfly valves |
| US6439255B1 (en) * | 2000-11-17 | 2002-08-27 | Mks Instruments, Inc. | Valve flapper with dynamic circumference seal |
| CN101532571A (en) * | 2009-02-13 | 2009-09-16 | 浙江石化阀门有限公司 | Butterfly valve featuring two-way metallic seal of bellows |
| CN201310633Y (en) * | 2008-12-04 | 2009-09-16 | 江苏神通阀门股份有限公司 | Two-way sealing butterfly valve |
| CN201705957U (en) * | 2010-06-29 | 2011-01-12 | 江苏神通阀门股份有限公司 | Bidirectional sealing butterfly valve |
-
2010
- 2010-06-29 CN CN2010102191274A patent/CN102313030A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0663549B1 (en) * | 1993-12-21 | 1998-12-30 | ADAMS GmbH & Co. ARMATUREN KG | Metallic seal for butterfly valves |
| US6439255B1 (en) * | 2000-11-17 | 2002-08-27 | Mks Instruments, Inc. | Valve flapper with dynamic circumference seal |
| CN201310633Y (en) * | 2008-12-04 | 2009-09-16 | 江苏神通阀门股份有限公司 | Two-way sealing butterfly valve |
| CN101532571A (en) * | 2009-02-13 | 2009-09-16 | 浙江石化阀门有限公司 | Butterfly valve featuring two-way metallic seal of bellows |
| CN201705957U (en) * | 2010-06-29 | 2011-01-12 | 江苏神通阀门股份有限公司 | Bidirectional sealing butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120111 |