CN202252033U - Bidirectional sealing butterfly valve - Google Patents
Bidirectional sealing butterfly valve Download PDFInfo
- Publication number
- CN202252033U CN202252033U CN2011204035942U CN201120403594U CN202252033U CN 202252033 U CN202252033 U CN 202252033U CN 2011204035942 U CN2011204035942 U CN 2011204035942U CN 201120403594 U CN201120403594 U CN 201120403594U CN 202252033 U CN202252033 U CN 202252033U
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- butterfly plate
- packing holder
- butterfly
- valve
- 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 provides a bidirectional sealing butterfly valve. The bidirectional sealing butterfly valve comprises a valve body, a valve seat, a sealing ring, a butterfly plate and a platen, wherein the valve seat is fixed in the valve body; the sealing ring and the valve seat form a sealing pair; a sealing ring seat is also arranged between the sealing ring and the butterfly plate; one end of the sealing ring seat is provided with a circle of counter bore and the sealing ring seat is connected to the butterfly plate through a screw; a spring is also arranged between the sealing ring seat and the butterfly plate, and is sleeved on the screw; the side of the sealing ring seat and the butterfly plate are sealed through an O-ring; a clearance is reserved between the sealing ring seat and the plane of the butterfly plate; the sealing ring is fixed on the sealing ring seat through the platen; a gasket is arranged between the sealing ring and the sealing ring seat; the gasket is also arranged between the platen and the sealing ring seat; a plurality of pressure balance holes are also formed at the positions of a cavity formed by the butterfly plate on the platen; and a disc spring is also arranged between the screw and the counter bore of the sealing ring seat. The utility model has the advantages that: the valve has reliable reverse sealing and long service life.
Description
Technical field
The utility model relates to a kind of valving, particularly relates 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 utility model provides a kind of bidirectional sealed butterfly valve.
It is a kind of bidirectional sealed butterfly valve that the utility model solves the technological scheme that its technical problem adopted, and 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; Through screw attachment on butterfly plate; Spring also is housed between packing holder and butterfly plate, and spring housing passes through seal with O ring between packing holder side and the butterfly plate on screw; There is 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, and 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 have several pressure compensation openings, the dish spring also is housed between the counterbore of screw and packing holder.
The beneficial effect of the utility model is to adopt floating type ring structure, and 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 utility model 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.O shape circle; 8. spring; 9. screw; 10. dish spring; 11 pressure compensation openings; 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, have 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 has several pressure compensation openings 11, between the counterbore of screw 9 and packing holder 6 dish spring 10 is housed also.
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 (1)
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; Through seal with O ring, have a space between packing holder and the butterfly plate plane between packing holder side and the butterfly plate, 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, the dish spring also is housed between the counterbore of screw and packing holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204035942U CN202252033U (en) | 2011-10-16 | 2011-10-16 | Bidirectional sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204035942U CN202252033U (en) | 2011-10-16 | 2011-10-16 | Bidirectional sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252033U true CN202252033U (en) | 2012-05-30 |
Family
ID=46113276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204035942U Expired - Fee Related CN202252033U (en) | 2011-10-16 | 2011-10-16 | Bidirectional sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252033U (en) |
-
2011
- 2011-10-16 CN CN2011204035942U patent/CN202252033U/en not_active Expired - Fee Related
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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: 20120530 Termination date: 20191016 |