CN201723765U - Double seal floating-type ball valve - Google Patents
Double seal floating-type ball valve Download PDFInfo
- Publication number
- CN201723765U CN201723765U CN2010202560397U CN201020256039U CN201723765U CN 201723765 U CN201723765 U CN 201723765U CN 2010202560397 U CN2010202560397 U CN 2010202560397U CN 201020256039 U CN201020256039 U CN 201020256039U CN 201723765 U CN201723765 U CN 201723765U
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- China
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- valve
- valve seat
- double seal
- type ball
- ball valve
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- Expired - Fee Related
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Abstract
The utility model relates to a double seal floating-type ball valve, which comprises a valve body, a valve cap, a valve seat, a sphere and a valve rod, wherein the valve rod is fixedly connected with the sphere; the valve seat is provided with a left valve seat and a right valve seat, and the left valve seat and the right valve seat are respectively installed in the valve cap and the valve body. The double seal floating-type ball valve has the main characteristics that the valve seat adopts a V-shaped sealed-surface structure, the V-shaped sealed-surface structure is mutually matched with a sphere sealed surface to constitute a double seal pair, an ring-shaped V-shaped cavity is formed between the inner-layer seal pair and the outer-layer seal pair, the opening and the closing are easy and convenient, and the sealing performance is reliable. The double seal floating-type ball valve is suitable for serving as a ship sea-water pipeline control valve.
Description
Technical field
The utility model relates to a kind of ball valve, particularly about a kind of Float ball valve.The utility model is applicable to boats and ships seawater pipeline control valve.
Background technique
Ball valve is widely used on the medium transport pipeline in each field because of its flow resistance is little, simple in structure, open-close convenient.Ball valve is divided into Fixed ball valve and Float ball valve, Float ball valve comprises valve body, valve seat, spheroid, valve rod, valve rod is fixedlyed connected with spheroid, and valve seat has left and right valve seat, and the valve seat insert that cooperatively interacts with the ball seal face is set respectively on left and right valve seat.Its major defect is to adopt the ball face sealing curved surface fitted seal that cooperatively interacts between valve seat insert and the ball seal face, and area of contact is big between the sealing surface, and keying frictional force is big, and keying moment is big.And the sealing surface of valve seat insert is easy to wear, and sealability is unreliable.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, provides that a kind of keying moment is little, the reliable double seal Float ball valve of sealability.
The technological scheme that realizes the utility model purpose comprises valve body, valve gap, valve seat, spheroid, valve rod, and valve rod is fixedlyed connected with spheroid, and valve seat has left and right valve seat, and left and right valve seat is installed in respectively in valve gap and the valve body.Mainly be that valve seat adopts v-seal face structure, cooperatively interact between this v-seal face and the ball seal face to constitute the double seal pair.
The utility model beneficial effect compared with prior art is: valve seat adopts v-seal face structure, and cooperatively interact between the ball seal face and constitute the double seal pair, form inside and outside two-layer line contact sealing pair between this v-seal face and the ball seal face, form ring-type V-arrangement cavity between the inside and outside two-layer sealing pair, its keying is light, sealability is reliable.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Double seal Float ball valve as shown in Figure 1 comprises valve body 4, valve gap 1, valve seat 6, spheroid 7, valve rod 9, and fixedlying connected with spheroid 7 in valve rod 9 lower ends, is provided with static spring 8 between the two, fixedlys connected with transmission handle 15 in valve rod 9 upper ends.Valve seat 6 has left and right valve seat, and left and right valve seat is installed in respectively in valve gap 1 and the valve body 4.Valve seat 6 adopts v-seal face structure, cooperatively interacts between this v-seal face and spheroid 7 sealing surfaces to constitute the double seal pair.Described double seal pair is by the inside and outside two-layer concentric linear sealing structure that complements each other to form between the v-seal face of valve seat 6 and spheroid 7 sealing surfaces, has solved that sphere contact seal opens and closes the big shortcoming of frictional force between the valve seat of prior art and the spheroid.Simultaneously, when the internal layer sealing pair took place to leak, outer sealing pair continued to realize sealing that sealability is reliable.Valve body 4 is fixedlyed connected with bolt 3 by nut 2 with valve gap 1, is provided with gasket seal 5 between the two.Be provided with thrust washer 10 and filler 11 between valve rod 9 and the valve body 4, filler 11 is installed between valve rod 9 and the valve body 4 by Gland 12 and hold-down bolt 13, and a banking stop 14 is installed above the Gland 12.
Claims (1)
1. double seal Float ball valve, comprise valve body (4), valve gap (1), valve seat (6), spheroid (7), valve rod (9), valve rod (9) is fixedlyed connected with spheroid (7), valve seat (6) has left and right valve seat, left and right valve seat is installed in respectively in valve gap (1) and the valve body (4), it is characterized in that valve seat (6) adopts v-seal face structure, cooperatively interact between this v-seal face and spheroid (7) sealing surface to constitute the double seal pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202560397U CN201723765U (en) | 2010-07-06 | 2010-07-06 | Double seal floating-type ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202560397U CN201723765U (en) | 2010-07-06 | 2010-07-06 | Double seal floating-type ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201723765U true CN201723765U (en) | 2011-01-26 |
Family
ID=43492092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202560397U Expired - Fee Related CN201723765U (en) | 2010-07-06 | 2010-07-06 | Double seal floating-type ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201723765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421447A (en) * | 2013-08-27 | 2015-03-18 | 上海纽京工业设备有限公司 | Ultra-high temperature multi-seal ball valve and machining method of valve seat sealing surface thereof |
-
2010
- 2010-07-06 CN CN2010202560397U patent/CN201723765U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421447A (en) * | 2013-08-27 | 2015-03-18 | 上海纽京工业设备有限公司 | Ultra-high temperature multi-seal ball valve and machining method of valve seat sealing surface thereof |
| CN104421447B (en) * | 2013-08-27 | 2016-10-19 | 上海纽京工业设备有限公司 | The many seal ball-valves of superhigh temperature and the processing method of sealing surface of seat thereof |
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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: 20110126 Termination date: 20160706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |