CN209511139U - A kind of metal to metal hard seal butterfly valve - Google Patents
A kind of metal to metal hard seal butterfly valve Download PDFInfo
- Publication number
- CN209511139U CN209511139U CN201821631041.0U CN201821631041U CN209511139U CN 209511139 U CN209511139 U CN 209511139U CN 201821631041 U CN201821631041 U CN 201821631041U CN 209511139 U CN209511139 U CN 209511139U
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- valve
- dish plate
- sealing ring
- valve seat
- metal
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Abstract
The utility model discloses a kind of metal to metal hard seal butterfly valve, including valve body, valve seat, valve rod and dish plate, the valve seat is pressed by pressing plate on valve opening；The dish plate is rotationally connected in valve body by valve rod；Sealing ring and dish plate pressing ring are provided on the dish plate, the sealing ring is fixed on dish plate by dish plate pressing ring, and the sealing ring is made of the stainless steel of OCr18Ni9；The lateral wall of the sealing ring is provided with primary sealing area and secondary sealing area；The inclination angle a of the primary sealing area is less than the inclination angle c of valve seat inner sidewall, and the inclination angle b of the secondary sealing area is greater than the inclination angle c of valve seat inner sidewall；The dish plate is under valve rod effect, and in valve body in rotation process, the primary sealing area of the sealing ring can compress valve seat inner sidewall and form interference fit；It is provided with hex screw on the pressing plate, is provided with hex screw in the dish plate；High temperature resistant, resistance to erosion ability are good, long service life, good airproof performance, and easy disassembly is conveniently replaceable.
Description
Technical field
The utility model relates to valve technology fields, more specifically, it relates to a kind of metal to metal hard seal butterfly valve.
Background technique
Butterfly valve is called flap valve, is widely used on the various fluid lines such as water, mud, oil product, existing butterfly valve is close
It is raw material that seal, which mostly uses 0Cr18Ni9+XB450 material, and being resistant to maximum temperature is 450 degrees Celsius, is not suitable at higher temperature
Environment uses, and resistance to erosion ability is also not strong enough；Conventional butterfly valve often has at middle head above and below sealing ring and is easy asking for leakage
Topic, sealing performance are poor；The components that general butterfly valve is easily damaged in are valve seat and sealing ring, especially sealing ring category
In rapid wear product；It scraps and is not available once existing butterfly valve sealing ring or valve seat damage allow for entire butterfly valve, extremely waste.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of metal to metals to seal butterfly firmly
Valve, it is desirable to provide a kind of high temperature resistant, the service life is longer, sealing performance is more preferable, sealing ring and valve seat are all replaceable, easy to maintenance
Butterfly valve.
To achieve the above object, the utility model provides following technical solution:
A kind of metal to metal hard seal butterfly valve, including valve body, valve seat, valve rod and dish plate, the valve seat pass through pressing plate pressure
Loaded on valve opening；
The dish plate is rotationally connected in valve body by valve rod；Sealing ring and dish plate pressing ring, institute are provided on the dish plate
It states sealing ring to be fixed on dish plate by dish plate pressing ring, the sealing ring is made of the stainless steel of OCr18Ni9；
The lateral wall of the sealing ring is provided with primary sealing area and secondary sealing area；
The inclination angle a of the primary sealing area is less than the inclination angle c of valve seat inner sidewall, the inclination angle of the secondary sealing area
B is greater than the inclination angle c of valve seat inner sidewall；
The dish plate is under valve rod effect, and in valve body in rotation process, the primary sealing area of the sealing ring can be compressed
Valve seat inner sidewall forms interference fit.
The utility model is further arranged: auxiliary seal gasket is provided between sealing ring and dish plate, the auxiliary is close
Gasket is made of the material of 304+ soft graphite.
The utility model is further arranged: being provided with hex screw on the pressing plate, is provided with hexagonal spiral shell in the dish plate
Nail.
The utility model is the utility model has the advantages that OCr18Ni9 stainless steel material used by the sealing ring of the valve can be 800
It is used under celsius temperature, so that butterfly valve has more high temperature resistant, and resistance to erosion ability is more preferable, and the service life is longer；Because of sealing ring
Primary sealing area inclination angle a be less than valve seat inner sidewall inclination angle c so that the primary sealing area of the lateral wall of sealing ring exists
It is interference fitted in the rotation process of valve rod with valve seat inner sidewall, so that valve tightness is more preferable；Because of the secondary sealing area of sealing ring
Inclination angle b be greater than valve seat inner sidewall inclination angle c, when can effectively avoid opening/shutting valve, the card between butterfly plate and valve body
Hinder phenomenon；The sealing ring is fitted on dish plate by dish plate pressing ring and is fixed with hex screw, and valve seat passes through pressing plate and pressing plate
On hex screw be fixed on valve body so that sealing ring and valve seat it is convenient for disassembly and assembly, convenient for being individually replaced, repair.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of metal to metal hard seal butterfly valve of the utility model；
Fig. 2 is a kind of exploded view of metal to metal hard seal butterfly valve of the utility model；
Fig. 3 is a kind of structural schematic diagram of the sealing ring of metal to metal hard seal butterfly valve of the utility model；
Fig. 4 is a kind of structural schematic diagram of the valve seat of metal to metal hard seal butterfly valve of the utility model；
Fig. 5 is a kind of sectional view of the sealing ring of metal to metal hard seal butterfly valve of the utility model；
Fig. 6 is a kind of sectional view of the valve seat of metal to metal hard seal butterfly valve of the utility model.
Description of symbols: 1, valve body；11, pressing plate；2, valve seat；3, valve rod；4, dish plate；41, dish plate pressing ring；42, it seals
Circle；421, primary sealing area；422, secondary sealing area；5, hex screw.
Specific embodiment
A kind of metal to metal hard seal butterfly valve embodiment of the utility model is done further in detail referring to attached drawing 1 to Fig. 6
Explanation.
A kind of metal to metal hard seal butterfly valve, including valve body 1, valve seat 2, valve rod 3 and dish plate 4, the valve seat 2 pass through pressure
The press fitting of plate 11 is fixed on valve opening, and by the hex screw 5 on pressing plate 11；The dish plate 4 is rotatablely connected by valve rod 3
In in valve body 1；Sealing ring 42 and dish plate pressing ring 41 are provided on the dish plate 4, the sealing ring 42 is solid by dish plate pressing ring 41
It is scheduled on dish plate 4, and is fixed by the hex screw 5 on dish plate 4, the sealing ring 42 uses the stainless steel of OCr18Ni9
It is made；The lateral wall of the sealing ring 42 is provided with primary sealing area 421 and secondary sealing area 422；In sealing ring 42 and dish plate 4
Between be provided with auxiliary seal gasket, the auxiliary seal gasket is made of the material of 304+ soft graphite, sealing ring 42 with
Better tightness between dish plate 4.
The dish plate 4 is under the effect of valve rod 3, in valve body 1 in rotation process, because the inclination angle a of primary sealing area 421 is small
In the inclination angle c of 2 inner sidewall of valve seat, the primary sealing area 421 of the sealing ring 42 can compress the formation interference of 2 inner sidewall of valve seat and match
It closes, so that valve tightness is more preferable；The inclination angle b of the secondary sealing area 422 is greater than the inclination angle c of 2 inner sidewall of valve seat, sealing
It is linear sealing, card resistance phenomenon when can effectively avoid opening/shutting valve, between butterfly plate and valve body between circle 42 and valve seat 2.
In the open state, when rotation valve rod 3, i.e. sealing ring 42 on drive dish plate 4 and dish plate 4 rotates, makes valve
Sealing ring 42 slowly close to valve seat 2, when turning to sealing ring 42 close to the end face lateral wall of dish plate 4 and the inner sidewall of valve seat 2
When contradicting completely, that is, valve passage is closed, conversely, can be by rotation valve rod 3, so that rotary seal circle 42, to seal
Circle 42 is slowly detached from the inner sidewall of valve seat 2 close to 4 end face lateral wall of dish plate, until valve rod 3 rotates 90 degree, fully opens valve,
The flow velocity of runner is most fast, the angle that can be rotated by adjusting valve rod 3, to control the speed of runner flow velocity.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (3)
1. a kind of metal to metal hard seal butterfly valve, including valve body, valve seat, valve rod and dish plate, it is characterized in that: the valve seat passes through
Pressing plate is pressed on valve opening；
The dish plate is rotationally connected in valve body by valve rod；Sealing ring and dish plate pressing ring are provided on the dish plate, it is described close
Seal is fixed on dish plate by dish plate pressing ring, and the sealing ring is made of the stainless steel of OCr18Ni9；
The lateral wall of the sealing ring is provided with primary sealing area and secondary sealing area；
The inclination angle a of the primary sealing area is less than the inclination angle c of valve seat inner sidewall, and the inclination angle b of the secondary sealing area is big
In the inclination angle c of valve seat inner sidewall；
The dish plate is under valve rod effect, and in valve body in rotation process, the primary sealing area of the sealing ring can compress valve seat
Inner sidewall forms interference fit.
2. a kind of metal to metal hard seal butterfly valve according to claim 1, it is characterized in that: between sealing ring and dish plate
It is provided with auxiliary seal gasket, the auxiliary seal gasket is made of the material of 304+ soft graphite.
3. a kind of metal to metal hard seal butterfly valve according to claim 1 or 2, it is characterized in that: being arranged on the pressing plate
There is hex screw, is provided with hex screw in the dish plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821631041.0U CN209511139U (en) | 2018-10-09 | 2018-10-09 | A kind of metal to metal hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821631041.0U CN209511139U (en) | 2018-10-09 | 2018-10-09 | A kind of metal to metal hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209511139U true CN209511139U (en) | 2019-10-18 |
Family
ID=68191674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821631041.0U Active CN209511139U (en) | 2018-10-09 | 2018-10-09 | A kind of metal to metal hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209511139U (en) |
-
2018
- 2018-10-09 CN CN201821631041.0U patent/CN209511139U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" |
Address after: 325024 1-2 / F, No. 922, Jinhai Second Road, airport new area, Yongxing street, Longwan District, Wenzhou City, Zhejiang Province Patentee after: Electric power construction Valve Group Co., Ltd Address before: 325000 Binhai Wudao 259, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee before: DIANJIAN VALVES Co.,Ltd. |
|
| CP03 | "change of name, title or address" |