CN201818825U - Double-seal fixed type ball valve - Google Patents
Double-seal fixed type ball valve Download PDFInfo
- Publication number
- CN201818825U CN201818825U CN2010202560378U CN201020256037U CN201818825U CN 201818825 U CN201818825 U CN 201818825U CN 2010202560378 U CN2010202560378 U CN 2010202560378U CN 201020256037 U CN201020256037 U CN 201020256037U CN 201818825 U CN201818825 U CN 201818825U
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- valve
- valve seat
- valve base
- double
- ball
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- Expired - Fee Related
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Abstract
The utility model relates to a double-seal fixed type ball valve which comprises a valve body, a valve cover, a valve base, a ball body, a valve rod and a fixed shaft, wherein the valve rod is fixedly connected with the ball body; the fixed shaft is fixedly mounted on the valve body; the upper end of the fixed shaft is movably connected with a positioning hole of the ball body; the valve base is provided with a left valve base and a right valve base; the left valve base and the right valve base are respectively mounted in the valve cover and the valve body in a floating manner; and valve base sealing rings matched with the sealing surface of the ball body are arranged on the left valve base and the right valve base. The valve base sealing rings mainly adopt V-shaped sealing surface structures; a double-seal pair is formed between a V-shaped sealing surface and the sealing surface of the ball body in a matching manner, so that starting and closing friction forces are reduced, and the sealing reliability is improved. The double-sealing fixed type ball valve is suitable for a control valve of a ship seawater pipeline.
Description
Technical field
The utility model relates to a kind of ball valve, particularly about a kind of Fixed 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, and Fixed ball valve comprises valve body, valve seat, spheroid, upper valve rod and lower valve rod, and upper valve rod is fixedlyed connected with spheroid, and lower valve rod is fixedly mounted on the valve body, and upper end and Sphere orientation hole flexibly connect.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 sealing curved surface fitted seal that cooperatively interacts between valve seat insert and the ball seal face, and frictional force is big between the sealing surface, 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 Fixed ball valve of sealability.
The technological scheme that realizes the utility model purpose comprises valve body, valve gap, valve seat, spheroid, valve rod and stationary axle, valve rod is fixedlyed connected with spheroid, stationary axle is fixedly mounted on the valve body, its upper end flexibly connects with the Sphere orientation hole, valve seat has left and right valve seat, left and right valve seat floats in valve gap and valve body respectively and installs, and the valve seat insert that cooperatively interacts with the ball seal face is set respectively on left and right valve seat.Mainly be that valve seat insert 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 insert adopts v-seal face structure, and constitutes the double seal pair of line contact sealing between the ball seal face, has reduced keying frictional force, has improved sealing reliability.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is valve seat insert and spheroid among the utility model Fig. 1, valve seat cooperating structure enlarged view.
Embodiment
Double seal Fixed ball valve as shown in Figure 1, comprise valve body 8, valve gap 13, valve seat 11, spheroid 9, valve rod 18 and stationary axle 3, valve rod 18 is fixedlyed connected with spheroid 9, and stationary axle 3 is fixedly mounted on the valve body 8 by fixing bolt 1 and set screw nut 2, and its upper end flexibly connects with spheroid 9 positioning holes.Be provided with pad 4 and seal ring 5 between stationary axle 3 and the valve body 8.Valve seat 11 has left and right valve seat, and left and right valve seat is floated by spring 12 in valve gap 13 and valve body 8 respectively and installs, and valve body 8 is fixedlyed connected with installation nut 7 by construction bolt 6 with valve gap 13.The valve seat insert 10 that cooperatively interacts with the ball seal face is set respectively on left and right valve seat.Valve seat insert 10 adopts v-seal face structure, cooperatively interact between this v-seal face and spheroid 9 sealing surfaces and constitute the double seal pair, form ring-type V-arrangement space between its inside and outside two-layer sealing pair, when the internal layer sealing pair takes place to leak, outer sealing pair continues to implement seal action, has improved sealing reliability.Simultaneously, make between valve seat insert 10 and the spheroid 9 and form line contact sealing, reduced the keying moment of ball valve.Be respectively equipped with O-ring seals 14 and sealing gasket 15 between valve gap 13 and valve seat 11 and the valve body 8, be provided with thrust washer 16, static spring 17 and filler 19 between valve body 8 and the valve rod 18, filler 19 is press-fited between valve body 8 and valve rod 18 by screw 24 by filler gland 20 and hold-down grid 21.Fix a banking stop 22 above the hold-down grid 21, the fixedly connected transmission handle 23 in valve rod 18 upper ends.
Claims (1)
1. double seal Fixed ball valve, comprise valve body (8), valve gap (13), valve seat (11), spheroid (9), valve rod (18) and stationary axle (3), valve rod (18) is fixedlyed connected with spheroid (9), stationary axle (3) is fixedly mounted on the valve body (8), its upper end flexibly connects with spheroid (9) positioning hole, valve seat (11) has a left side, right valve seat, a left side, right valve seat floats in valve gap (13) and valve body (8) respectively and installs, on a left side, the valve seat insert (10) that cooperatively interacts with spheroid (9) sealing surface is set respectively on the right valve seat, it is characterized in that valve seat insert (10) adopts v-seal face structure, cooperatively interact between this v-seal face and spheroid (9) sealing surface to constitute the double seal pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202560378U CN201818825U (en) | 2010-07-06 | 2010-07-06 | Double-seal fixed type ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202560378U CN201818825U (en) | 2010-07-06 | 2010-07-06 | Double-seal fixed type ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201818825U true CN201818825U (en) | 2011-05-04 |
Family
ID=43916777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202560378U Expired - Fee Related CN201818825U (en) | 2010-07-06 | 2010-07-06 | Double-seal fixed type ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201818825U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775673A (en) * | 2014-01-21 | 2014-05-07 | 张家港富瑞特种装备股份有限公司 | High-pressure spherical valve |
| CN103801897A (en) * | 2013-12-26 | 2014-05-21 | 方正阀门集团有限公司 | Ultralow-temperature tool-aid-type fixing ball valve and assembling method thereof |
-
2010
- 2010-07-06 CN CN2010202560378U patent/CN201818825U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103801897A (en) * | 2013-12-26 | 2014-05-21 | 方正阀门集团有限公司 | Ultralow-temperature tool-aid-type fixing ball valve and assembling method thereof |
| CN103801897B (en) * | 2013-12-26 | 2016-05-25 | 方正阀门集团有限公司 | On a kind of ultralow temperature, fill formula fixing ball valve and assembly method thereof |
| CN103775673A (en) * | 2014-01-21 | 2014-05-07 | 张家港富瑞特种装备股份有限公司 | High-pressure spherical 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20170706 |