CN205956438U - Sealing structure of ball valve - Google Patents
Sealing structure of ball valve Download PDFInfo
- Publication number
- CN205956438U CN205956438U CN201621049215.3U CN201621049215U CN205956438U CN 205956438 U CN205956438 U CN 205956438U CN 201621049215 U CN201621049215 U CN 201621049215U CN 205956438 U CN205956438 U CN 205956438U
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- CN
- China
- Prior art keywords
- ball valve
- connecting portion
- sealing structure
- seal ring
- energy storage
- 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 utility model relates to a sealing structure of ball valve, it include energy storage circle and set up in the gasket in the energy storage circle outside, the energy storage circle is in including spring coil, formation two arc sealing ring pieces that spring coil surface and symmetry set up and be used for connecting two the connecting portion of sealing ring piece, the sealing ring piece with the material of connecting portion is engineering plastics. Set up the gasket in the outside of energy storage circle, this energy storage circle is through the connecting portion that set up two arc sealing ring pieces on the spring coil surface with connect the sealing ring piece, and they be engineering plastics, have wide, the resistant ultra -low temperature of temperature application scope and high temperature resistant, sealed more reliable, the gasket is not breakable, the use is more extensive.
Description
Technical field
The utility model belongs to valve components field, is related to a kind of sealing structure and in particular to a kind of sealing of ball valve
Structure.
Background technology
Rise in the duct block medium ball valve species a lot, have hard sealed eccentric ball valve and soft seal constant-current type ball
Valve, the sealing of hard sealed constant-current type ball valve is metal to metal, uses rear phase-contact surface meeting phase mutual friction for a long time, makes to be sealed with
Certain leakage；The sealing of soft seal constant-current type ball valve be metal to rubber, long-time use after be easily bent deformation, cause close
The variation of sealing property.
Content of the invention
The utility model purpose is to overcome the deficiencies in the prior art to provide a kind of sealing structure of ball valve.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is：A kind of sealing structure of ball valve, it includes storing
Can enclose and be arranged at the pad outside described accumulation of energy circle, described accumulation of energy circle includes turn, is formed at described turn surface
And symmetrically arranged two arc seal ring pieces and the connecting portion for connecting two described seal ring pieces, described seal ring piece
Material with described connecting portion is engineering plastics.
Optimally, the material of described seal ring piece and described connecting portion is pi or polybenzimidazoles.
Optimally, described pad is Graphite pad.
Optimally, one end of two described seal ring pieces is connected by described connecting portion and other end interval setting.
Because technique scheme is used, the utility model compared with prior art has following advantages：The utility model
The sealing structure of ball valve, arranges pad in the outside of accumulation of energy circle, and this accumulation of energy circle passes through close in turn surface two arcs of setting
Seal ring piece and the connecting portion connecting seal ring piece, they are engineering plastics, have that temperature applicable range is wide, resistance to ultralow temperature and a Nai Gao
Temperature, sealing is more reliable, pad is non-friable, use more extensive.
Brief description
Accompanying drawing 1 is the structural representation of ball valve；
Accompanying drawing 2 is the sealing structure structural representation of the utility model ball valve；
Wherein, 1, valve body；2nd, valve gap；3rd, groove；4th, sealing structure；41st, pad；42nd, accumulation of energy circle；421st, turn；
422nd, seal ring piece；423rd, connecting portion.
Specific embodiment
Shown embodiment is further described to the utility model below in conjunction with the accompanying drawings.
Ball valve as shown in Figure 1 is conventional ball valve, including valve body 1, the valve gap 2 that is fixed on valve body 1, spheroid, valve seat
With parts such as valve rods.The sealing structure of the utility model ball valve can be arranged in the groove 3 between valve body 1 and valve gap 2, also may be used
To be arranged as required at other structures needing and sealing, it mainly includes pad 41 and accumulation of energy circle 42, pad 41 and accumulation of energy
Circle 42 is in the annular solid being arranged concentrically on the whole.
As shown in Fig. 2 pad 41 is arranged on the outside of accumulation of energy circle 42, it is Graphite pad.Accumulation of energy circle 42 includes turn
421st, be formed at turn 421 surface and symmetrically arranged two arc seal ring pieces 422 and for connect two sealing rings
The connecting portion 423 of piece 422；The section of turn 421 rounded or oval (this partial cross section has symmetry axis), Ke Yigen
Hollow according to needing to be arranged to；With regard to above-mentioned symmetrical axial symmetry, it is integrated seal ring piece 422 with connecting portion 423, material
It is engineering plastics (as pi or polybenzimidazoles；As pi plastics PI, -272 DEG C of resistance to ultralow temperature；As polyphenyl simultaneously
Imidazoles PBI, 310 DEG C of high temperature resistant Long-term service temperature, instantaneous tolerable temperature is up to 760 DEG C, corrosion-resistant, still protects in acid or alkali environment
Hold stability characteristic (quality)).In the present embodiment, the upper end of two seal ring pieces 422 is connected by connecting portion 423, and under them
Certain interval is then defined between end.The dual-seal of accumulation of energy circle 42 and Graphite pad 41 makes whole sealing structure more may be used
Lean on；If not setting accumulation of energy circle 42, Graphite pad 41 is frangible, usually breaks down, sealing unreliable, and the rubber o-ring of routine intolerant to
Low temperature, high temperature resistant does not also project；But if not setting Graphite pad, sealing structure is not prevented fires.
Above-described embodiment is only that technology design of the present utility model and feature are described, its object is to allow and is familiar with technique
Personage will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All equivalence changes made according to the utility model Spirit Essence or modification, all should cover protection domain of the present utility model it
Interior.
Claims (4)
1. a kind of sealing structure of ball valve it is characterised in that：It includes accumulation of energy circle (42) and is arranged at described accumulation of energy circle (42)
The pad (41) in outside, described accumulation of energy circle (42) includes turn (421), is formed at described turn (421) surface and symmetrical
Two arc seal ring pieces (422) of setting and the connecting portion (423) for connecting two described seal ring pieces (422), institute
Stating seal ring piece (422) and the material of described connecting portion (423) is engineering plastics.
2. ball valve according to claim 1 sealing structure it is characterised in that：Described seal ring piece (422) and described company
The material of socket part (423) is pi or polybenzimidazoles.
3. ball valve according to claim 1 sealing structure it is characterised in that：Described pad (41) is Graphite pad.
4. ball valve according to claim 1 sealing structure it is characterised in that：The one of two described seal ring pieces (422)
End is connected and other end interval setting by described connecting portion (423).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621049215.3U CN205956438U (en) | 2016-08-30 | 2016-08-30 | Sealing structure of ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621049215.3U CN205956438U (en) | 2016-08-30 | 2016-08-30 | Sealing structure of ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205956438U true CN205956438U (en) | 2017-02-15 |
Family
ID=57978569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621049215.3U Active CN205956438U (en) | 2016-08-30 | 2016-08-30 | Sealing structure of ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205956438U (en) |
-
2016
- 2016-08-30 CN CN201621049215.3U patent/CN205956438U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |