CN202418884U - Filler self-tightening type sealing device of valve rod of butterfly valve - Google Patents
Filler self-tightening type sealing device of valve rod of butterfly valve Download PDFInfo
- Publication number
- CN202418884U CN202418884U CN2012200667280U CN201220066728U CN202418884U CN 202418884 U CN202418884 U CN 202418884U CN 2012200667280 U CN2012200667280 U CN 2012200667280U CN 201220066728 U CN201220066728 U CN 201220066728U CN 202418884 U CN202418884 U CN 202418884U
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- China
- Prior art keywords
- valve rod
- filler
- valve
- sealing device
- rod
- 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 relates to a filler self-tightening type sealing device of a valve rod of a butterfly valve, The filler self-tightening type sealing device comprises the cylindrical valve rod, wherein a valve body is sleeved outside the valve rod; the top end of the valve rod is provided with a filler gasket, the fillers, a pressing cover, a thrust bearing and an upper cover in sequence; and the two edges of the upper cover are respectively provided with a tooth rod. The self-tightening type sealing device also comprises spring sleeves under the tooth rods, wherein the spring sleeves are respectively and internally provided with a group of disc-shaped springs; and the disc-shaped springs are fixedly locked by washers and hexagon nuts under the disc-shaped springs. The filler self-tightening type sealing device has the beneficial effects that the pressure of the fillers can be compensated, the excessive compression of the fillers can be prevented, and the sealing of the valve rod can be guaranteed.
Description
Technical field
The utility model relates to a kind of valve sealing device, relates in particular to the linkage structure of the hexagon nut and the tooth rod of both sides in this valve sealing device.
Background technique
Visible by Fig. 1, the butterfly valve stem packing seal arrangement of existing technology comprises: columniform valve rod 1 is with valve body 2 outside valve rod 1; Filler packing ring 8 is installed on the top of valve rod 1 successively, filler 9, gland 10; Thrust bearing 11, loam cake 12 respectively is equipped with rooted tooth rod 3 on loam cake 12 both sides; By hexagon nut 4 and pad 5 fixing and lockings, play stable sealing effect below the tooth rod 3.
But above-mentioned structure valve rod rotates back and forth in valve body, and the filler that can wear and tear causes filling pressure to reduce, and causes the leakage of valve rod position.
Summary of the invention
The utility model technical issues that need to address have provided a kind of butterfly valve stem packing self-energized seal device, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is realized through following technological scheme:
The utility model comprises: columniform valve rod; Outside described valve rod, be with valve body; Top at said valve rod is installed filler packing ring, filler, gland, thrust bearing and loam cake successively; One rooted tooth rod respectively is housed on described loam cake both sides; Also comprise: the spring housing below described tooth rod; One group of belleville spring is arranged in described spring housing; Described one group of belleville spring is by pad below it and hexagon nut fixing and locking.
Compared with prior art, the beneficial effect of the utility model is: can compensate filling pressure, prevent the filler excess compression, guarantee valve stem seal.
Description of drawings
Fig. 1 is the butterfly valve stem packing schematic diagram of sealing device of existing technology.
Fig. 2 is the utility model structural representation.
Fig. 3 is the utility model blast structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
Visible by Fig. 2, Fig. 3: the utility model comprises: columniform valve rod 1; Outside described valve rod 1, be with valve body 2; On the top of said valve rod 1 filler packing ring 8, filler 9, gland 10, thrust bearing 11 and loam cake 12 are installed successively; One rooted tooth rod 3 respectively is housed on described loam cake 12 both sides; Also comprise: the spring housing 7 below described tooth rod 3; One group of belleville spring 6 is arranged in described spring housing 7; Described one group of belleville spring 6 is by pad below it 5 and hexagon nut 4 fixing and lockings.
The hexagon nut of screwing in the utility model, stressed through the belleville spring compression, be delivered on the filler; Belleville spring is as an accumulator, and storage pressure is when wearing and tearing appear in filler; Belleville spring can compensate filling pressure, makes filler obtain a pressure stable, guarantees valve stem seal; Simultaneously, the existence of belleville spring can not cause the filler overcompression yet, improves switch torsion.
The working principle of the utility model is: when fluid got into below filler, the pressure that produces on the filler made the very big sealing force of generation between filler, valve body and the valve rod, plays the effect of sealing; When wearing and tearing appearred in filler, the pressure that produces on the belleville spring can compensate because the pressure that the filler wearing and tearing occur reduces, and made the sealing force between filler, valve body and the valve rod stable, played sealing effect.
The utility model can open the sealing effect of stablizing valve rod, can not cause the inefficacy of valve packing owing to the frequent switch of valve, causes leaking outside of valve, improves the working life of valve.Having overcome traditional high-performance butterfly valve needs the irregularly characteristics of locking stem packing clamping nut, is specially adapted to occasion poisonous, hazardous medium.
Claims (1)
1. a butterfly valve stem packing self-energized seal device comprises: columniform valve rod; Outside described valve rod, be with valve body; Top at said valve rod is installed filler packing ring, filler, gland, thrust bearing and loam cake successively; One rooted tooth rod respectively is housed on described loam cake both sides; It is characterized in that also comprising: the spring housing below described tooth rod; One group of belleville spring is arranged in described spring housing; Described one group of belleville spring is by pad below it and hexagon nut fixing and locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200667280U CN202418884U (en) | 2012-02-27 | 2012-02-27 | Filler self-tightening type sealing device of valve rod of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200667280U CN202418884U (en) | 2012-02-27 | 2012-02-27 | Filler self-tightening type sealing device of valve rod of butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418884U true CN202418884U (en) | 2012-09-05 |
Family
ID=46743647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200667280U Expired - Fee Related CN202418884U (en) | 2012-02-27 | 2012-02-27 | Filler self-tightening type sealing device of valve rod of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418884U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937653A (en) * | 2016-05-25 | 2016-09-14 | 江苏中昊船用阀门制造有限公司 | Elastic self-sealing three-eccentric center butterfly valve |
| CN106151543A (en) * | 2016-07-22 | 2016-11-23 | 苏州纽威阀门股份有限公司 | A kind of hard seal butterfly valve |
-
2012
- 2012-02-27 CN CN2012200667280U patent/CN202418884U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937653A (en) * | 2016-05-25 | 2016-09-14 | 江苏中昊船用阀门制造有限公司 | Elastic self-sealing three-eccentric center butterfly valve |
| CN106151543A (en) * | 2016-07-22 | 2016-11-23 | 苏州纽威阀门股份有限公司 | A kind of hard seal 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 |
Granted publication date: 20120905 Termination date: 20170227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |