CN208764372U - A kind of hard seal ball valve - Google Patents
A kind of hard seal ball valve Download PDFInfo
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- CN208764372U CN208764372U CN201821565025.6U CN201821565025U CN208764372U CN 208764372 U CN208764372 U CN 208764372U CN 201821565025 U CN201821565025 U CN 201821565025U CN 208764372 U CN208764372 U CN 208764372U
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- gland
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Abstract
The utility model discloses a kind of hard seal ball valve, including valve body, valve deck, valve seat, valve rod, valve spindle gland, valve seat gland, sphere；Lateral cavity is provided in valve body, valve body cavity top is hatch frame, and opening diameter is greater than sphere diameter；There are two valve seat tools, is separately positioned at left and right sides of valve body transverse direction cavity, and valve seat gland tool is provided with spring between valve seat gland and valve seat there are two being located on the outside of two valve seats and being threadably secured with valve body transverse direction cavity；Sphere is arranged two valve seats across the hatch frame on valve body top and contacts with valve seat；Valve seat is stepped shape close to one end of sphere, and the upper and lower ends of sphere are provided with flower pattern disk, flower pattern disk be meshed with valve seat and with sphere together with rotation drive valve seat transversely cavity move.It is simple that the utility model provides a kind of structure, and valve seat is not contacted with sphere when opening and closing, reduces the hard seal ball valve of sphere abrasion.
Description
Technical field
The utility model belongs to valve technology field, and in particular to a kind of hard seal ball valve.
Background technique
Since ball valve has the characteristics that flow resistance is small, opening and closing speed is fast and easy to operate, the very extensive such as petroleum of use,
Chemical industry, power station and petroleum, natural gas long-distance transport pipes etc..The sealing of ball valve is by preset pre- between valve body and valve seat
Clamp force is known as seal pressure to be formed, and the seal pressure of general ball valve is used to be arranged between valve seat and valve body matching part
Elastic element, such as butterfly spring and column spring are formed.For ball valve in opening-closing process, pretightning force acts on sealing pair always
Surface on, cause ball valve opening and closing torque be greater than other class valves.Pretightning force also increases the abrasion of spherome surface simultaneously, because
Big for sphere manufacture difficulty, replacement is difficult, so the service life of sphere is directly related to the service life of entire ball valve.
Utility model content
Goal of the invention: it in view of the deficienciess of the prior art, the purpose of the utility model is to provide a kind of structure is simple, opens
Valve seat is not contacted with sphere when closing, and reduces the hard seal ball valve of sphere abrasion.
Technical solution: in order to achieve the above-mentioned object of the invention, the technical solution adopted in the utility model is as follows: a kind of hard ball
Valve, including valve body, valve deck, valve seat, valve rod, valve spindle gland, valve seat gland, sphere；Lateral cavity, valve are provided in the valve body
Body cavity body top is hatch frame, and opening diameter is greater than sphere diameter；There are two valve seat tools, is separately positioned on valve body transverse direction cavity
The left and right sides, there are two be located on the outside of two valve seats and be threadably secured with valve body transverse direction cavity, valve for valve seat gland tool
Spring is provided between seat gland and valve seat；Sphere is arranged two valve seats across the hatch frame on valve body top and and valve
Seated connection touching；Valve deck setting is connect in valve body openings structure upper end and by bolt with valve body, and valve rod passes through valve deck and connect with sphere；
Valve spindle gland passes through valve rod and connect with valve deck；The valve seat is stepped shape close to one end of sphere, and up and down the two of the sphere
End is provided with flower pattern disk, flower pattern disk be meshed with valve seat and with sphere together with rotation drive valve seat transversely cavity movement.
Preferably, the flower pattern disk, which is four, is separated by 90 ° of circular arc convex shapes, the valve seat close to sphere one
Hold stepped, wherein ladder-like top is protruding end, protruding end horizontal section is corresponding with flower pattern disk circular arc protrusion
Shape is simultaneously meshed with the circular arc protrusion of flower pattern disk；The stair-stepping lower part of valve seat is in contact with sphere；Valve seat and valve seat gland
Between length be not less than flower pattern disk circular arc protrusion radius.
Preferably, bearing and sealing ring are arranged between the valve rod and valve deck.
Preferably, the valve rod upper end is connected with handle, handle is equipped with protective jacket.
Preferably, the valve rod upper end is connected with handle, handle is equipped with protective jacket.
Preferably, the spring between the valve seat and valve seat gland is ring spring or waveform spring.
The utility model has the advantages that compared with prior art, the utility model has the advantage that the valve mechanism of the utility model is tight
It gathers, simply；Valve is not contacting between valve seat and sphere in opening-closing process, does not rub, and extends sphere and entire valve
Service life.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is transverse cross-sectional view when flower pattern disk is meshed with valve seat protruding end；
Fig. 3 is transverse cross-sectional view when flower pattern disk moves 45 ° in Fig. 2 with the cooperation of valve seat protruding end.
Specific embodiment
The utility model is furtherd elucidate with reference to the accompanying drawing.
As shown in Figure 1, a kind of hard seal ball valve, including valve body 1, valve deck 2, valve seat 3, valve rod 4, valve spindle gland 5, valve seat pressure
Lid 6, sphere 7；Lateral cavity is provided in valve body 1,1 cavity top of valve body is hatch frame, and it is straight that opening diameter is greater than sphere 7
Diameter；There are two the tools of valve seat 3, is separately positioned at left and right sides of the lateral cavity of valve body 1, there are two be located at two to the tool of valve seat gland 6
A 3 outside of valve seat is simultaneously threadably secured with the lateral cavity of valve body 1, and spring 8 is provided between valve seat gland 6 and valve seat 3；Sphere
7 are arranged two valve seats 3 across the hatch frame on 1 top of valve body and contact with valve seat 3；The setting of valve deck 2 is open in valve body 1
Structure upper end is simultaneously connect by bolt with valve body 1, and valve rod 4 passes through valve deck 2 and connect with sphere 7；Valve spindle gland 5 pass through valve rod 4 with
Valve deck 2 connects；Valve seat 3 is stepped shape close to one end of sphere 7, and the upper and lower ends of sphere 7 are provided with flower pattern disk 9, flower pattern
Disk 9, which is meshed with valve seat 3 and rotates together with sphere 7, drives the transversely cavity movement of valve seat 3.
As Figure 2-3, flower pattern disk 9 is four circular arc convex shapes for being separated by 90 °, and valve seat 3 is close to one end of sphere 7
Stepped, wherein ladder-like top is protruding end, protruding end horizontal section is circular arc convex shaped corresponding with flower pattern disk 9
Shape is simultaneously meshed with the circular arc protrusion of flower pattern disk 9；The stair-stepping lower part of valve seat 3 is in contact with sphere 7；Valve seat 3 and valve seat pressure
8 length of spring between lid 6 is not less than the radius of 9 circular arc of flower pattern disk protrusion.Valve seat 3 is set as top protrusion close to sphere
It is ladder-like that valve seat 3 and the contact surface of flower pattern disk 9 are staggered with valve seat 3 and the contact surface of sphere 7, be conducive to valve seat 3 and ball
The sealing of body 7, while being conducive to the processing and manufacturing of valve seat protruding end circular arc protrusion.
The working principle of the utility model are as follows: when valve is closed, sphere 7 and flower pattern disk 9 rotate clockwise 90 °, flower pattern
Circular arc high spot is passed through by the circular arc recess of 3 protruding end of valve seat when the circular arc protrusion rotation of disk 9, slope climbing movement is consequently formed and arrives
Downslope motion, due to flower pattern disk 9 be it is fixed, make the circular arc of flower pattern disk 9 convex so valve seat 3 must move laterally outward
The circular arc protrusion by 3 protruding end of valve seat is played, in the process, valve seat 3 and sphere 7 realize of short duration separation, when flower pattern disk 9
After 90 ° of rotation, flower pattern disk 9 engages again with 3 protruding end of valve seat, and valve seat 3 is contacted again with sphere 7, and valve is closed.Need weight
When new opening valve, flower pattern disk 9 and sphere 7 rotate counterclockwise 90 °, repeat the above process, and valve is opened, it is thus achieved that valve
The separation of sphere 7 and valve seat 3, does not rub between valve seat 3 and sphere 7, extends the service life of sphere 7 in door opening-closing process,
Also the service life of entire valve is extended.
Valve rod 4 is sealed with two ways with valve deck 2, the first is packing seal, is equipped between valve rod 4 and valve deck 2
Stuffing-box, stuffing-box is interior to be equipped with filler, is achieved in the sealing of valve rod 4.Second is that axis is arranged between valve rod 4 and valve deck 2
Hold the rotation and sealing that valve rod 4 is realized with sealing ring.
4 upper end of valve rod is connected with handle 10, and handle is equipped with protective jacket.
Spring 8 between valve seat 3 and valve seat gland 6 is ring spring or waveform spring.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of hard seal ball valve, it is characterised in that: including valve body (1), valve deck (2), valve seat (3), valve rod (4), valve spindle gland
(5), valve seat gland (6), sphere (7)；Lateral cavity is provided in the valve body (1), valve body (1) cavity top is opening knot
Structure, opening diameter are greater than sphere (7) diameter；There are two valve seat (3) tools, is separately positioned at left and right sides of the lateral cavity of valve body (1),
There are two be located on the outside of two valve seats (3) and be threadably secured with the lateral cavity of valve body (1), valve for valve seat gland (6) tool
Spring (8) are provided between seat gland (6) and valve seat (3)；The hatch frame that sphere (7) passes through valve body (1) top is arranged two
It is contacted between a valve seat (3) and with valve seat (3)；Valve deck (2) setting is in valve body (1) hatch frame upper end and passes through bolt and valve body
(1) it connects, valve rod (4) passes through valve deck (2) and connect with sphere (7)；Valve spindle gland (5) passes through valve rod (4) and connect with valve deck (2)；
The valve seat (3) is stepped shape close to the one end of sphere (7), and the upper and lower ends of the sphere (7) are provided with flower pattern disk
(9), flower pattern disk (9), which is meshed with valve seat (3) and rotates together with sphere (7), drives valve seat (3) transversely cavity movement.
2. hard seal ball valve according to claim 1, it is characterised in that: the flower pattern disk (9) is four and is separated by 90 °
Circular arc convex shape, the valve seat (3) is stepped close to the one end of sphere (7), wherein ladder-like top is protruding end, protrusion
End horizontal section is circular arc convex shape corresponding with flower pattern disk (9) and is meshed with the circular arc protrusion of flower pattern disk (9)；
Valve seat (3) stair-stepping lower part is in contact with sphere (7)；Spring (8) length between valve seat (3) and valve seat gland (6) is not low
In the radius of flower pattern disk (9) circular arc protrusion.
3. hard seal ball valve according to claim 1, it is characterised in that: be equipped between the valve rod (4) and valve deck (2)
Stuffing-box, stuffing-box is interior to be equipped with filler.
4. hard seal ball valve according to claim 1, it is characterised in that: be arranged between the valve rod (4) and valve deck (2)
Bearing and sealing ring.
5. hard seal ball valve according to claim 1, it is characterised in that: valve rod (4) upper end is connected with handle (10),
Handle is equipped with protective jacket.
6. hard seal ball valve according to claim 1, it is characterised in that: between the valve seat (3) and valve seat gland (6)
Spring (8) is ring spring or waveform spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821565025.6U CN208764372U (en) | 2018-09-25 | 2018-09-25 | A kind of hard seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821565025.6U CN208764372U (en) | 2018-09-25 | 2018-09-25 | A kind of hard seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208764372U true CN208764372U (en) | 2019-04-19 |
Family
ID=66137074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821565025.6U Active CN208764372U (en) | 2018-09-25 | 2018-09-25 | A kind of hard seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208764372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939753A (en) * | 2018-09-25 | 2020-03-31 | 江苏三益石油装备有限公司 | Hard sealing ball valve |
-
2018
- 2018-09-25 CN CN201821565025.6U patent/CN208764372U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939753A (en) * | 2018-09-25 | 2020-03-31 | 江苏三益石油装备有限公司 | Hard sealing ball valve |
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