CN201293120Y - Expanding ball-valve sealing device - Google Patents
Expanding ball-valve sealing device Download PDFInfo
- Publication number
- CN201293120Y CN201293120Y CNU200820169088XU CN200820169088U CN201293120Y CN 201293120 Y CN201293120 Y CN 201293120Y CN U200820169088X U CNU200820169088X U CN U200820169088XU CN 200820169088 U CN200820169088 U CN 200820169088U CN 201293120 Y CN201293120 Y CN 201293120Y
- Authority
- CN
- China
- Prior art keywords
- valve
- cone
- flap
- ball valve
- utility
- 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
Links
Abstract
The utility model discloses a sealing device of a ball valve of propped opened type, which comprises a sealing seat and a valve core, wherein the sealing seat and the valve core are arranged in a valve body, the valve core is connected with a valve rod and comprises a cone and valve flaps respectively arranged at both sides of the cone, and the cone and the valve flaps are connected by a dovetail groove or a T-shaped groove. With the structure, the ball valve of propped opened type greatly has prolonged service life, improved serviceable range, and the like and is particularly applicable to the environment with a plurality of switching times, high temperature, high pressure, and the like.
Description
Technical field
The utility model relates to a kind of seal arrangement that is applicable to the bracing type ball valve.
Background technique
The seal arrangement of ordinary ball valve generally all is based on soft seal, and generally these have flexible nonmetallic material and make sealing seat with teflon or rubber, by them spool are clamped, and reach sealing.But, because these nonmetallic material can not be born high temperature or high pressure, thereby dwindled their using scope greatly, therefore just required hard seal ball valve to replace, to adapt to the Environmental Conditions of High Temperature High Pressure.Traditional hard seal ball valve, all be to copy the nonmetallic material encapsulating method, with elastic element sealing seat is pressed in tightly and reaches sealing on the spool, but when valve opens or closes at every turn, all will produce sliding friction strong between spheroid and sealing seat, the damage sealing surface, thus cause valve very easily to be revealed, have a strong impact on working life.
The model utility content
The purpose of this utility model is to overcome the prior art defective, and a kind of seal arrangement of bracing type ball valve of simple in structure, no frictionally damage is provided.
In order to realize above purpose, the utility model is by the following technical solutions: a kind of seal arrangement of bracing type ball valve, comprise the sealing seat and the spool that links to each other with valve rod that are located in the valve body, it is characterized in that: spool is made of cone and the flap that is separately positioned on the cone both sides, connects by dovetail groove between cone and the flap.
The beneficial effects of the utility model are: the utility model includes the sealing seat and the spool that links to each other with valve rod in the valve body, and spool is made of cone and the flap that is separately positioned on the cone both sides, connects by dovetail groove between cone and the flap.The utility model makes the bracing type ball valve be greatly improved at aspects such as working life, using scope by said structure, is specially adapted to opening and closing often, using in the environment such as High Temperature High Pressure.
Below in conjunction with accompanying drawing the utility model is described in further detail
Description of drawings
Fig. 1 is the structural representation of the utility model specific embodiment;
Embodiment
As shown in Figure 1, the utility model comprises the sealing seat 6 and the spool that links to each other with valve rod 3 that is arranged in the valve body, and spool is made of cone 4 and the flap 5 that is separately positioned on cone 4 both sides, between cone 4 and the flap 5 by dovetail groove or T-slot connection.Moment of torsion when closing for reducing valve opening, the bi-side of cone 4 and flap 5 are designed to 5 degree.When valve closing, cone 4 and flap 5 rotate under the drive of valve rod 3 and move down, and cone 4 struts flap 5 sealing seat 6 that is close in the valve body simultaneously, reaches forced seal.Otherwise cone 4 rises, and the sealing pigtail shrinks valve opening.Among the embodiment, valve body top and flap 5 relative positions also are provided with a limited ring 2, the sealing effect during the enhancing valve closing.
The utility model makes ball valve be greatly improved at aspects such as using scope, working lifes by above-mentioned concrete structure, is specially adapted to opening and closing often, using in the environment such as High Temperature High Pressure.
Certainly, protection domain of the present utility model is not limited only to above-mentioned mode of execution, and any improvement to the utility model unsubstantiality all should be within protection domain of the present utility model.
Claims (3)
1, a kind of seal arrangement of bracing type ball valve comprises the sealing seat and the spool that links to each other with valve rod that are located in the valve body, it is characterized in that: spool is made of cone and the flap that is separately positioned on the cone both sides, connects by dovetail groove between cone and the flap.
2, the seal arrangement of bracing type ball valve according to claim 1 is characterized in that: the bi-side of cone and flap are designed to 5 degree.
3, the seal arrangement of bracing type ball valve according to claim 1 is characterized in that: the position relative with flap, valve body top also is provided with a limited ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820169088XU CN201293120Y (en) | 2008-11-27 | 2008-11-27 | Expanding ball-valve sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820169088XU CN201293120Y (en) | 2008-11-27 | 2008-11-27 | Expanding ball-valve sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201293120Y true CN201293120Y (en) | 2009-08-19 |
Family
ID=41006597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820169088XU Expired - Fee Related CN201293120Y (en) | 2008-11-27 | 2008-11-27 | Expanding ball-valve sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201293120Y (en) |
-
2008
- 2008-11-27 CN CNU200820169088XU patent/CN201293120Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20131127 |