CN201772095U - Double-eccentric hemispherical valve - Google Patents
Double-eccentric hemispherical valve Download PDFInfo
- Publication number
- CN201772095U CN201772095U CN2010205024527U CN201020502452U CN201772095U CN 201772095 U CN201772095 U CN 201772095U CN 2010205024527 U CN2010205024527 U CN 2010205024527U CN 201020502452 U CN201020502452 U CN 201020502452U CN 201772095 U CN201772095 U CN 201772095U
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- Prior art keywords
- valve
- ball
- valve body
- valve stem
- double
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- Expired - Fee Related
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Abstract
The utility model discloses a double-eccentric hemispherical valve, which structurally comprises a valve body, a valve stem and a ball. The valve stem and the ball are arranged inside the valve body; valve seats arranged on the ball and the valve body are mutually attached in correspondence; the valve body is connected onto a frame below a pneumatic actuator by the aid of an external hexagonal stud; the valve stem includes an upper valve stem and a lower valve stem which are respectively connected into the valve body at the upper end and the lower end of the ball by the aid of a composite copper sleeve and splines; and a positioning sleeve sleeved on the upper valve stem is arranged above the composite copper sleeve of the upper valve stem. The double-eccentric hemispherical valve solves the problem of loosening of the ball with the valve stem to avoid affecting sealing effects as the valve stem is connected with the ball by the aid of the splines, integrates all valve sealing gaskets made of composite graphite, solves the difficulty of high temperature, and guarantees no separation of the ball and completely ensures sealing effects by designing the positioning sleeve on the upper valve stem. In addition, the valve seats are positioned tightly and fixed by internal hexagonal dowels to avoid any movement, and can not move after being opened and closed for a plurality of times, thereby guaranteeing sealing effects.
Description
Technical field
The utility model relates to valve, specifically double eccentric half ball valve.
Background technique
Double eccentric half ball valve traditional product valve flowing channel diameter is less, connect with pin key between ball and the valve rod, causes gap, loosening, the center displacement that influence ball and valve seat easily, abrades sealing surface.Upper valve rod does not have positioning design, valve rod upwards promoted when pipeline pressure raise when using, the while ball also up moves together a little, so easy destruction sealing seat suitable for reading.Seal face materials poor effect, not enough, the shortening life of valve of hardness.Valve seat location is not firm, easily loosening, influence sealing effect in addition can not use, valve mechanism length is short, integral body is ugly.
The model utility content
(1) technical problem that will solve
The purpose of this utility model is the defective that exists at prior art, and double eccentric half ball valve is provided, and has solved that the sealing effect that prior art exists is bad, valve rod and spheroid is loosening, life of valve is short problem.
(2) technological scheme
The technological scheme that its technical problem that solves the utility model adopts is: double eccentric half ball valve, its structure comprise the valve rod and the spheroid of valve body and valve inner, the valve seat of described spheroid and the valve body setting correspondence that fits; Described valve body is connected on the frame of pneumatic actuator below by the outer-hexagonal double-screw bolt, described valve rod is that last lower valve rod is connected in spheroid up and down in the valve body at two ends by compound copper sheathing and spline respectively, and described upper valve rod complex copper cover top is provided with the setting sleeve that is enclosed within on the upper valve rod.
Described valve seat connects to live pressing plate by locating stud, and valve seat and pressing plate are connected on the valve body by interior hexagonal double-ended bolt, pad, and described pad is the composite graphite pad.
Setting sleeve top on the described upper valve rod is provided with filler, and passes through Gland, stud and fixed by nut on valve body, and described filler is provided with locating stud.
By interior hexagonal double-ended bolt, metallic shim bottom is installed on the valve body of described lower valve rod lower end.
(3) beneficial effect
Double eccentric half ball valve of the present utility model is compared with prior art, has following beneficial effect:
Not only structure length is reasonable for the utility model, valve flow is big, and valve seat and ball sealing surface have adopted special material: corrosion-resistant, shock-resistant, wear-resistant, hardness is higher, minimum HRC (42～46) the highest HRC (48～53) can effectively prolong valve working life.To connect between valve rod and the ball be in the spline mode, solved the loosening problem that ball and valve rod produce and influence all sealing gaskets of the whole deck valve door of sealing effect, all adopted composite graphite pad, a difficult problem that has solved high temperature, upper valve rod design to add setting sleeve, the bulb produced a bit separate, guaranteed fully sealing effect.Valve seat location is tight, adopted interior hexagonal dowel fixes, valve seat is not had a bit moves, thereby switch several times, valve seat do not have the displacement phenomenon and guarantee sealing effect.
Description of drawings
Accompanying drawing is the structural representation of double eccentric half ball valve of the present utility model.
Among the figure: 1, bottom; 2, interior hexagonal double-ended bolt; 3, metallic shim; 4, valve body; 5, pad; 6, interior hexagonal double-ended bolt; 7, locating stud; 8, valve seat and pressing plate; 9, compound copper sheathing; 10, lower valve rod; 11, spheroid; 12, upper valve rod; 13, compound copper sheathing; 14, setting sleeve; 15, locating stud; 16, filler; 17, outer-hexagonal double-screw bolt; 18, Gland; 19, stud and nut; 20, frame; 21, pneumatic actuator.
Embodiment
Next explain below with reference to Figure of description double eccentric half ball valve of the present utility model being done.
Double eccentric half ball valve of the present utility model, its structure comprise the valve rod and the spheroid 11 of valve body 4 and valve inner, the valve seat of described spheroid and the valve body setting correspondence that fits; Described valve body is connected on the frame 20 of pneumatic actuator 21 belows by outer-hexagonal double-screw bolt 17, described valve rod is that last lower valve rod 12,10 is connected in spheroid up and down in the valve body at two ends by compound copper sheathing 13,9 and spline respectively, and described upper valve rod complex copper cover top is provided with the setting sleeve 14 that is enclosed within on the upper valve rod.
Described valve seat connects to live pressing plate by locating stud 7, and valve seat and pressing plate 8 are connected on the valve body by interior hexagonal double-ended bolt 6, pad 5, and described pad is the composite graphite pad.
Setting sleeve top on the described upper valve rod is provided with filler 16, and is fixed on the valve body by Gland 18, stud and nut 19, and described filler is provided with locating stud 15.
By interior hexagonal double-ended bolt 2, metallic shim 3 bottom 1 is installed on the valve body of described lower valve rod lower end.
Not only structure length is reasonable for the utility model, valve flow is big, and valve seat and ball sealing surface have adopted special material: corrosion-resistant, shock-resistant, wear-resistant, hardness is higher, minimum HRC (42～46) the highest HRC (48～53) can effectively prolong valve working life.To connect between valve rod and the ball be in the spline mode, solved the loosening problem that ball and valve rod produce and influence all sealing gaskets of the whole deck valve door of sealing effect, all adopted composite graphite pad, a difficult problem that has solved high temperature, upper valve rod design to add setting sleeve, the bulb produced a bit separate, guaranteed fully sealing effect.Valve seat location is tight, adopted interior hexagonal dowel fixes, valve seat is not had a bit moves, thereby switch several times, valve seat do not have the displacement phenomenon and guarantee sealing effect.
The above embodiment is a kind of of the more preferably concrete mode of execution of the utility model, and common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacement all should be included in the protection domain of the present utility model.
Claims (4)
1. double eccentric half ball valve, its structure comprises the valve rod and the spheroid of valve body and valve inner, the valve seat of described spheroid and the valve body setting correspondence that fits; It is characterized in that: described valve body is connected on the frame of pneumatic actuator below by the outer-hexagonal double-screw bolt, described valve rod is that last lower valve rod is connected in spheroid up and down in the valve body at two ends by compound copper sheathing and spline respectively, and described upper valve rod complex copper cover top is provided with the setting sleeve that is enclosed within on the upper valve rod.
2. double eccentric half ball valve according to claim 1 is characterized in that: described valve seat connects to live pressing plate by locating stud, and valve seat and pressing plate are connected on the valve body by interior hexagonal double-ended bolt, pad, and described pad is the composite graphite pad.
3. double eccentric half ball valve according to claim 1 and 2 is characterized in that: the setting sleeve top on the described upper valve rod is provided with filler, and passes through Gland, stud and fixed by nut on valve body, and described filler is provided with locating stud.
4. double eccentric half ball valve according to claim 1 and 2 is characterized in that: by interior hexagonal double-ended bolt, metallic shim bottom is installed on the valve body of described lower valve rod lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205024527U CN201772095U (en) | 2010-08-24 | 2010-08-24 | Double-eccentric hemispherical valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205024527U CN201772095U (en) | 2010-08-24 | 2010-08-24 | Double-eccentric hemispherical valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772095U true CN201772095U (en) | 2011-03-23 |
Family
ID=43751937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205024527U Expired - Fee Related CN201772095U (en) | 2010-08-24 | 2010-08-24 | Double-eccentric hemispherical valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201772095U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015622A (en) * | 2016-06-20 | 2016-10-12 | 中节能耐磨技术宜兴有限公司 | Double-eccentricity ceramic hemispherical valve |
| CN109737218A (en) * | 2019-02-22 | 2019-05-10 | 上海奇高阀门制造有限公司 | A kind of manual high-temperature ball valve |
-
2010
- 2010-08-24 CN CN2010205024527U patent/CN201772095U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015622A (en) * | 2016-06-20 | 2016-10-12 | 中节能耐磨技术宜兴有限公司 | Double-eccentricity ceramic hemispherical valve |
| CN109737218A (en) * | 2019-02-22 | 2019-05-10 | 上海奇高阀门制造有限公司 | A kind of manual high-temperature ball valve |
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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: 20110323 Termination date: 20110824 |