CN203272845U - Double-piston sealing ball valve - Google Patents
Double-piston sealing ball valve Download PDFInfo
- Publication number
- CN203272845U CN203272845U CN 201320297080 CN201320297080U CN203272845U CN 203272845 U CN203272845 U CN 203272845U CN 201320297080 CN201320297080 CN 201320297080 CN 201320297080 U CN201320297080 U CN 201320297080U CN 203272845 U CN203272845 U CN 203272845U
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- CN
- China
- Prior art keywords
- lip
- valve
- type packing
- valve seat
- double
- 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 - Lifetime
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Abstract
The utility model relates to a double-piston sealing ball valve. The double-piston sealing ball valve comprises a valve seat, a valve deck, a ball body, a valve body and a valve rod. The valve seat is arranged between the valve deck and the ball body; a first spring, a spring installation groove, a sealing ring and a sealing ring installation groove are arranged between one radial face of the valve seat and one radial face of the valve deck, wherein the radial face of the valve seat and the radial face of the valve deck are arranged in an opposite mode; the sealing ring comprises two lip-shaped sealing ring bodies; each lip-shaped sealing ring body is an annular component with the cross section of a U shape; a U-shaped opening of each lip-shaped sealing ring body is arranged in the axial direction of the valve seat; the openings of the two lip-shaped sealing ring bodies are arranged in an opposite mode; the other sides, without the openings, of the lip-shaped sealing ring bodies are mutually adhered. According to the scheme, the double-piston sealing ball valve is good in sealing effect.
Description
Technical field
The utility model is specifically related to a kind of double-piston ball valve.
Background technique
ball valve, that spheroid is driven by valve rod, and the valve that rotates around the axis of valve rod, and the double-piston seal ball-valve is the ball valve with double-piston sealing function, existing double-piston seal ball-valve comprises valve seat, valve gap, spheroid, valve body and valve rod, valve seat is arranged between valve gap and spheroid, be provided with Sealing between valve seat and spheroid, be respectively arranged with spring and spring fitting groove and O-ring seals and seal ring mounting groove between the valve seat sagittal plane relative with valve gap, under some operating mode, be subjected to serviceability temperature, corrosive medium, the impact of the factors such as sealing material, sealing between valve seat and valve gap is not suitable for adopting the O RunddichtringO, need to adopt lip-type packing, the cross section of lip-type packing is U-shaped, the opening of U-shaped axially arranges along valve seat, a side that is provided with opening is subject to medium pressure liquid can make opening strut, lip-type packing is close between valve seat and valve gap is played seal action, but the particularity due to the double-piston ball valve, liquid medium can be from flowing between the axial vane surface of valve seat and valve gap both sides and to the lip-type packing build-up of pressure, when the opposite side that is provided with opening from lip-type packing when liquid medium gives lip-type packing pressure, the lip-type packing meeting is squeezed distortion and loses sealing effect, can't satisfy the real work demand.
Summary of the invention
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of double-piston seal ball-valve of good sealing effect.
for achieving the above object, the utility model provides following technological scheme: comprise valve seat, valve gap, spheroid, valve body and valve rod, described valve seat is movably set between valve gap and spheroid, be respectively arranged with the first spring and spring fitting groove and seal ring and seal ring mounting groove between the described valve seat sagittal plane relative with valve gap, it is characterized in that: described seal ring comprises two lip-type packings, described lip-type packing is the take the shape of the letter U annular construction member of shape of cross section, the U-shaped opening of described lip-type packing axially arranges along valve seat, described two lip-type packing openings are towards the opposite, the opposite side that described two lip-type packings are provided with opening is bonded to each other.
By adopting technique scheme, the lip-type packing of fitting in two backs is set, which side of liquid medium from valve seat and valve gap both sides enters in the opening that all can flow into lip-type packing, opening is strutted, lip-type packing is close between valve seat and valve gap and is played seal action, sealability increases greatly, satisfies the job requirement of double-piston seal ball-valve.
The utility model further is set to: be provided with bracing ring in described lip-type packing, described bracing ring extends to the lip-type packing outside in the lip-type packing, is provided with the bracing ring mounting groove suitable with the bracing ring shape in described lip-type packing.
By adopting technique scheme, the bracing ring that extends to the lip-type packing outside is supported in when lip-shaped sealed ring is pushed on sagittal plane between valve seat and valve gap, the end of avoiding lip-type packing is damaged because the promotion of liquid medium is butted on sagittal plane between valve seat and valve gap, life-saving.
The utility model further is set to: be respectively arranged with the second spring for the fixed support circle between the U-shaped both sides of described bracing ring and lip-type packing.
By adopting technique scheme, the second spring is set makes bracing ring be subject to flexible fastening, fixed effect is better, and liquid medium is flowed among lip-type packing.
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the enlarged view of A in Fig. 1.
Embodiment
as Fig. 1-shown in Figure 2, the utility model discloses a kind of double-piston seal ball-valve, comprise valve seat 1, valve gap 2, spheroid 3, valve body 4 and valve rod 5, valve seat 1 is movably set between valve gap 2 and spheroid 3, be provided with Sealing 31 between valve seat 1 and spheroid 3, be respectively arranged with the first spring 6 and spring fitting groove 61 and seal ring and seal ring mounting groove 71 between valve seat 1 sagittal plane relative with valve gap 2, it is characterized in that seal ring comprises two lip-type packings 7, lip-type packing 7 is the take the shape of the letter U annular construction member of shape of cross section, the U-shaped opening of lip-type packing 7 axially arranges along valve seat 1, two lip-type packing 7 openings are towards the opposite, the opposite side that two lip-type packings 7 are provided with opening is bonded to each other, the lip-type packing 7 of fitting in two backs is set, liquid medium from valve seat 1 and which side valve gap 2 both sides enters in the opening that all can flow into lip-type packing 7, opening is strutted, lip-type packing 7 is close between valve seat 1 and valve gap 2 and is played seal action, sealability increases greatly, satisfy the job requirement of double-piston seal ball-valve.
Be provided with bracing ring 72 in lip-type packing 7, bracing ring 72 extends to lip-type packing 7 outsides in the lip-type packing 7, be provided with the bracing ring mounting groove 721 suitable with bracing ring 72 shapes in lip-type packing 7, the bracing ring 72 that extends to lip-type packing 7 outsides is supported in when lip-shaped sealed ring 7 is pushed on sagittal plane between valve seat 1 and valve gap 2, the end of avoiding lip-type packing 7 is damaged because the promotion of liquid medium is butted on sagittal plane between valve seat and valve gap, life-saving.
Be respectively arranged with the second spring 73 for the fixed support circle between the U-shaped both sides of bracing ring 72 and lip-type packing 7, the second spring 73 be set make bracing ring 72 be subject to flexible fastening, fixed effect is better, and liquid medium is flowed among lip-type packing 7.
Claims (3)
1. double-piston seal ball-valve, comprise valve seat, valve gap, spheroid, valve body and valve rod, described valve seat is movably set between valve gap and spheroid, be respectively arranged with the first spring and spring fitting groove and seal ring and seal ring mounting groove between the described valve seat sagittal plane relative with valve gap, it is characterized in that: described seal ring comprises two lip-type packings, described lip-type packing is the take the shape of the letter U annular construction member of shape of cross section, the U-shaped opening of described lip-type packing axially arranges along valve seat, described two lip-type packing openings are towards the opposite, the opposite side that described two lip-type packings are provided with opening is bonded to each other.
2. double-piston seal ball-valve according to claim 1, it is characterized in that: be provided with bracing ring in described lip-type packing, described bracing ring extends to the lip-type packing outside in the lip-type packing, is provided with the bracing ring mounting groove suitable with the bracing ring shape in described lip-type packing.
3. double-piston seal ball-valve according to claim 2 is characterized in that: be respectively arranged with the second spring for the fixed support circle between the U-shaped both sides of described bracing ring and lip-type packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320297080 CN203272845U (en) | 2013-05-27 | 2013-05-27 | Double-piston sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320297080 CN203272845U (en) | 2013-05-27 | 2013-05-27 | Double-piston sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272845U true CN203272845U (en) | 2013-11-06 |
Family
ID=49503257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320297080 Expired - Lifetime CN203272845U (en) | 2013-05-27 | 2013-05-27 | Double-piston sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203272845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591326A (en) * | 2013-11-18 | 2014-02-19 | 交城县鑫升机械有限公司 | Top entry low temperature ball valve |
-
2013
- 2013-05-27 CN CN 201320297080 patent/CN203272845U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591326A (en) * | 2013-11-18 | 2014-02-19 | 交城县鑫升机械有限公司 | Top entry low temperature ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG QINGTIAN CHAODA CASTING Co.,Ltd. Assignor: CHAODA VALVE GROUP Co.,Ltd. Contract record no.: 2015330000190 Denomination of utility model: Double-piston sealing ball valve Granted publication date: 20131106 License type: Exclusive License Record date: 20150703 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |